Contents Academic Exchange Activities
1. On behalf of Architectural Society of China, Prof. Academic Exchange Activities ZHOU Ying attended the editors meeting of the Journal of Asian Architecture and Building Engineering ······································ 1 (JAABE) in Tokyo, Japan, on Jul. 13th, 2012. JAABE is an international journal co-organized by Architectural Research and Development Society of China, Architectural Institute of Japan, and Architectural Institute of Korea. The meeting discussed ······································ 5 the concrete procedures to promote the international impact of JAABE such as special issues with invited authors. International Publications
(Abstract)
····································· 10
List of Other Recent 2. Assoc. Prof. CHEN Suwen was invited to attend "The Publications Asian-Pacific Network of Centers for Research in Smart Structure Technology (ANCRiSST 2012)" ,which held ····································· 21 in Bangalore, India on Jul. 27-28th, 2012. She made an invited presentation entitled "Blast Protective Design for Buildings: Challenges and Opportunity".
3. During Aug.5-8th, 2012, Profs. LI Jie, CHEN Jianbing, LIU Wei and Dr. PENG Yongbo attended the 2012 International Symposium on Reliability Engineering Risk Management (ISRERM 2012) held in Japan and gave their lectures. Prof. LI Jie delivered a keynote
Disaster Reduction News Volume 8, Number 2, Mar., 2013
lecture entitled "Engineering Reliability: A (ACEM'12) was held on Aug. 26-30th, 2012 in Physical Approach". Prof. CHEN Jianbing Seoul, Korea. Prof. ZHU Ledong attended the delivered an invited plenary lecture, entitled conference and mainly took part in the academic "PDEM-Based Global Reliability of Engineering exchange and discussion of AWAS'12, made an oral presentation titled "Effect of Wind Yaw Angle on Flutter Performance of a Truss Deck Suspension Bridge with Various Aerodynamic Measures" on Aug. 28th, 2012.
Structures".
4. On Aug. 6th 2012, Prof. Marian Gizejowsk, vice-dean of the Faculty of Civil Engineering, Warsaw University of Technology, and Prof. Aleksander Kozowski, vice-dean of the Faculty of Civil and Environmental Engineering, Rzeszó Prof. CHEN Jun attended the same congress and w University of Technology, were invited to visit gave two presentations titled "Assessment of Tongji University. They presented two lectures wind-induced structural fatigue based on joint entitled "Investigations into the distortional probability density function of wind speed and buckling resistance of slender section castellated direction" and "Unified non-stationary mathe- composite steel and concrete beams" and matical model for near-ground surface strong "Introduction of Rzesz ó w University of winds". Technology" respectively . 8. During Sept. 2-6th, 2012, The 7th International 5. Profs. LU Xilin, ZHAO Bin and LU Wensheng Colloquium on Bluff Body Aerodynamics and were represented as Tongji Party to organize the Applications (BBAA7), hosted by SKLDRCE, 3rd Conference of Structural Experimental and was held in Shanghai, China. It's the first time for Detecting Approaches, and the Experimental the Colloquium to be held under the umbrella of Education Method in Civil Engineering, which the International Association for Wind was hold at Harbin, Aug. 10-12th, 2012. Engineering (IAWE), and was the largest one counting in 200 collected papers from 21 6. The 3rd Workshop on China-US Collaboration countries or areas worldwide. It's also the for Disaster Evolution/Resilience of Civil youngest one referring to 76 registered student Infrastructure and Urban Environment was held participants involved in 72 papers. 19 staff and 21 in Pacific Earthquake Engineering Research postgraduate student of Wind Tunnel Testing Center, USA, on Aug. 13-17th, 2012. The Division of SLDRCE took part in the serving workshop was funded by the National Natural work and academic exchanges of the colloquium. Science Foundation of China (NSFC) and US Natural Science Foundation (NSF). Profs. LU Xilin, CHEN Jun, and ZHOU Ying attended the workshop.
7. The 2012 World Congress on Advances in Civil, Environmental and Materials Research 9. From Sept. 2-28th, 2012, Prof. CHEN Jianbing
- 2 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
visited Aalborg University in Denmark. During Ying, and Assoc. Prof. LI Peizhen attended the his visit, Dr. Chen gave a seminar on Sept.7th same conference and each of them gave a lecture titled "Application of the Probability Density in the parallel session respectively. Evolution Method (PDEM) to Structural Reliability Analysis of Complicated Structural Systems". Besides, he visited the Wave Star wave energy converter in Hanstholm. In the 4-week period, Dr. Chen worked together Prof. S.R.K. Nielsen and Dr. Sichani on the applications of PDEM to reliability and control of offshore wind
turbines and wave energy converters.
10. Prof. LU Xilin attended 18th IABSE Congress held in Korea on Sept. 17-21st, 2012. Prof. Lu gave a keynote speech entitled "Recent Study on 13. The 210th Eastern Forum of Science and Seismic Performance and Response Control of Technology on smart sensing workshop of Urban Tall Buildings". tunnel structure was held on Sept. 27th, 2012 in Shanghai, China. Prof. ZHU Hehua was invited to 11. During Sept. 15-24th, 2012, Prof. Spanos, a give a presentation on 973 research project member of US National Academy of Engineering (2011CB013800) "Fundamental Theory for the and Foreign member of Europe Academy of Performance Evolution and Sensing-Control of Science, visited Tongji University and gave a Urban Metro Structures". Wen-Yuan lecture. During his visit, several discussions between research groups of Tongji 14. During Oct. 19th to Nov. 13th, 2012, Prof. Erik University and Rice University were chaired by Vanmarcke from Princeton University visited Prof. LI Jie and Prof. Spanos. Tongji University as the Kwanghua Chair Professor and gave a lecture on "New 12. During Sept. 24 -28th, 2012, Prof. LIU Wei and Perspectives on Multi-hazard Infrastructure Risk Dr. PENG Yongbo attended the 15th World Conf. Management". Meanwhile, he attended the on Earthquake Engineering (15WCEE). They Tongji-Princeton joint workshop chaired by Prof. both had oral presentations on the conference. LI Jie and Dr. CHEN Jianbing. Prof. Vanmarcke The title of the presentation made by Dr. PENG is "Integrated design of damper placement and parameters for passive control of randomly base-excited structures". Over 3500 partici- pants from 80 counties attended the conference and conducted fruitful discussions and communications. Profs. LU Xilin, LOU Menglin，
JIANG Huanjun, QIAN Jiang, ZHAO Bin, ZHOU
- 3 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
was also invited to give a keynote lecture on the conference, Prof. Li was invited to give a keynote 8th National Conference on Random Vibration lecture titled "Physical stochastic systems – a new and its Applications, of which Prof. Li chairs the perspective". Dr. CHEN was invited to give a Scientific Committee. plenary lecture titled "Recent advances of probability density evolution method". Dr. PENG 15. During Oct. 22-24th, 2012, Prof. CHEN Jun won the Excellent Young Researcher's Paper attended the 25th KKCNN Symposium on Civil Prize. He was one of the two recipients of the Engineering held in Busan, Korea and gave a prize. lecture titled "Experimental investigation on pedestrian load". 20. During Nov. 17-19th, 2012, Profs. LI Jie, CHEN Jianbing and LIU Wei, Dr. PENG Yongbo and 16. Profs. QIAN Jiang, LU Wensheng and Assoc. CHEN Jun attended the 12th International Symp. Prof. LI Peizhen were invited to visit National on Structural Engineering (ISSE-12) and gave Ilan University, Taiwan, on Oct. 24-25th, 2012 their lectures. Prof. LI delivered a keynote lecture, for "the Symposium of Model Construction and entitled "Stochastic Viscous-Damage Constitutive Shaking Table Test" and Feng Chia University, Model for Concrete". Taiwan, on Oct. 27th, 2012 for "the Symposium of Academic and Double Degree Cooperation between TJU-FCU". Each of them was invited to give a lecture there.
17. Prof. LU Xilin was invited to attend the annual
meeting of the Pacific Earthquake Engineering Research Center held on Oct. 25-26th, 2012 in 21. During Dec. 5-7th, 2012, Prof. CHEN Jun and his Berkeley, USA. About 100 participants attended two students attended the 1st International the annual meeting. Conference on Performance- based and Life-cycle Structural Engineering and gave two lectures on 18. The Organizing Committee of the Internation- structural health monitoring and modeling of al Joint Symposium on Urban Geotechnics for human load. Prof. JIANG Huanjun attended the Sustainable Development (JS-Seoul 2012) which same conference and gave a lecture in the parallel was held in Suwon, Korea, from Nov. 2-3rd, session. 2012 . The conference invited Prof. ZHU Hehua to give a Keynote Lecture, titled "Innovative IT 22. The 5th Kwang-Hua Forum and Opening Techniques in Solving Challenging Geotechnical Symposium of Tongji Shaking Table Array was Problems in China." This event was organized by hosted successfully by Tongji University on Dec. Sungkyunwan University, Kyushu branch of 8-10th, 2012. 140 participants were invited to Japanese Geotechnical Society, and International attend the forum and visit the Tongji shaking Committee of Korean Geotechnical Society. table array in Jiading Campus. Profs. LU Xilin, LI Jianzhong, and JIANG Huanjun served as the 19. During Nov. 8-10th, 2012, Prof. LI Jie, Dr. CHEN Jianbing and Dr. PENG Yongbo attended the 8th National Conf. on Random Vibration and its Applications in Chengdu. Prof. LI chairs the Scientific Committee. In the
- 4 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
chair of the organizing committee. Research and Development 23. Prof. LI Guoqiang was invited to attend "11th International Conference on Steel Space & 1. From November 2012 to January 2013, Prof. LI Composite Structures" on Dec. 12-14th, 2012 in Guoqiang's Group conducted experi- mental Qingdao, China. During the Conference, Prof. LI researches on the mechanical behavior of high Guoqiang gave a keynote speech entitled "The strength steel Q690, including the monotonic National Specification for Fire-resistance of Steel loading tests and low-cycle cyclic loading tests. Structures in China". (1) A database was built according to the experimental results from a total of 29 specimens 24. On Dec 25th 2012, Dr. WU Xijia, Research for monotonic loading and 16 for low-cycle Fellow of the Canada National Research Council, loading. The specimens are illustrated in was invited to visit Tongji University and Fig1-Fig3. Some of the stress-strain curves of the presented a lecture entitled "Life Prediction on above specimens are showed in Fig4. the Base of Material Fundamental Properties".
25. Prof. ZHOU Ying was invited to visit the United
States under the auspices of the Young Science
Professionals Voluntary Visitor Program of the Fig3 Q690 specimens for Fig3 Cracked specimens United States Department of State. There were 10 monotonic tensile test after tensile test young professors from China visiting the
National Science Foundation, National Academy
of Engineering, National Institutes of Health,
Stanford University, and University of California Fig3 Q690 specimens for at Berkeley. low-cycle cyclic loading test
(a) Stress-strain curve of Q690 steel under monotonic loading
(b) Stress-strain curve of Q690 steel under cycli loading Fig4 Stress-strain curves
- 5 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
(2) Based on the monotonic loading tests, the set as 1/60. The multi-shaking-table test mechanical parameters of Q690, such as the yield technology of immersed tunnel was established strength and elongation ratio, were collected. The to realize free field and tunnel response under above test results made contribution to the non-uniform seismic input. The state-of-the-art research of the resistance partial coefficients and challenges, including discrete multi-point seismic the design strength value of Q690 steel. The input mechanism, dynamic similarity theory, damage index and constitutive model considering ultra-long model container design, soil model damage evolution of Q690 steel is researched preparation, and equivalent tunnel model design, based on the low-cycle cyclic loading tests. were put forward and solved.
2. Prof. YUAN Yong and the research team have conducted an experimental research on mechanical properties of the large scale element joint of the Hongkong-Zhuhai-Macao (HZM) immersed tunnel. The geometric scale ratio was set as 1/10. Two typical loading cases, i.e. the horizontal compression-bending case and the compression–shearing case, were applied in the The multi-shaking-table test on an ultra-long immersed test according to the real HZM engineering. Both tunnel conducted by YUAN Yong the compression, bending, and shearing 4. Prof. CHEN Yiyi, Assoc. Prof. WANG Wei and stiffnesses of the immersed joint were obtained the research team have finished the research on from the test under different axial force levels. two full-scale tension-only concentrically braced Furthermore, the ultimate shearing capacity as beam-through frames (TOCBBTFs) with through well as the shearing failure mode of the beam bolted connections. This type of TOCBBTF system features cold-formed square-tube section columns connected to H-section through beams by bolted end plate. It is commonly used in low-rise prefabricated buildings. Two two-story, four-span by one-span TOCBBTFs subjected to design vertical load were cyclically loaded horizontally to examine the seismic behaviour. Stable behavior was
observed up to a story drift angle of 1/10. The The pseudo-static joint test conducted by YUAN cyclic behaviour was characterized by a linear Yong immersed joint were also observed and response, followed by a slip range and a analyzed. In order to mitigate the joint damage significant hardening response. Deteriorating under earthquake, an effective energy absorption pinched hysteresis was observed due to the technology was developed for seismic design of occurrence of cyclic brace compression buckling the immersed joint, and its validation was and tension yielding. The structural damage verified based on test results. evolution, ductility, stiffness and shear force 3. Prof. YUAN Yong and the research team have distribution of the TOCBBTFs were investigated. conducted an experimental research on Moreover, the finite element software ABAQUS multi-shaking-table test of an ultra-long was used to investigate the behaviour of immersed tunnel. The geometric scale ratio was TOCBBTF by nonlinear analysis. Semi-rigid
- 6 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
analysis produced the most reasonable prediction Atlantic side near its outfall, and will be the key including initial lateral stiffness and peak story section of the transportation between the two shear. The calibrated numerical models can be sides of the canal. The bridge is a 1050m-long employed to launch further studies for this PC cable-stayed bridge with spans of structural system. 79+181+530+181+79m. Its PC bridge deck, which is 83.347m high above the water surface at the mid-span, has a cross section of twin side boxes, 23.6m in width and 2.834m in height. The height of the tower above the bearing platform upper surface is 207.5m for the south tower and 211.5m for the north tower, and the top altitudes of both towers are 212.5m. The bridge is prone to be strongly affected by the trade wind and marine
climate because it is located in the west 5. Prof. CHEN Yiyi, Prof. TONG Lewei and the coastal-area of the Atlantic with low latitudes in research team have finished the research on the inner tropics. cold-formed thick-walled square hollow section beam-columns to investigate the hysteretic The historical wind data recorded at the weather behavior of the members with plate thickness observatories near the bridge site show that the greater than 6mm. Based on the research, the wind in the canal region at the Atlantic side is seismic design criteria have been proposed for very strong and the design reference wind speed cold-formed thick-walled square hollow section at deck level reaches 43.7m for a return period of beam-column. 100 years. To ensure the wind-resistant safety of the bridge, the aerodynamic coefficients of the bridge deck were measured, and the performances of flutter and vortex-induced resonance of the bridge were checked and improved via a series of wind tunnel tests of sectional model. The performances of galloping, vortex-induced resonance and buffeting of the free-standing bridge tower were also examined Cold-formed thick-walled square hollow section via a series of wind tunnel tests of aeroelastic beam-column cyclic loading test setup model. Full bridge analyses on wind-induced static instability and buffeting responses were also carried out for both the service and construction stages and a countermeasure using
Failure mode of cold-formed thick-walled square hollow section beam-column under cyclic loading
6. Prof. ZHU Ledong and his research team recently have finished the research work on the wind-resistance of Panama Canal Bridge at the Atlantic Side, which crosses the canal at the
- 7 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
temporary tie-down cables were suggested to determined for the bridge deck and towers. The mitigate the buffeting responses during the performances of bridge flutter, vortex-induced construction stage. vibration of the bridge deck and the aerodynamic coefficients of the bridge deck have also been 7. Prof. Ledong Zhu and his research team recently checked or measured via a series of wind tunnel have engaged in the wind-resistant investigation tests of sectional model. Meanwhile, an effective of Polonggou Bridge crossing the Polong aerodynamic countermeasure by adding a pair of Channel, an anabranch of Palongzangbu River in proper wind fairings on the tow side of the the Linzhi area of Xizang Autonomous Region. original design scheme of the bridge deck was The bridge is a key section between Tongmai and also suggested based on the test results and was 105 Daoban on the 318 National Road. The finally adopted in the design to improve the bridge is surrounded by complex terrain flutter stability and then to meet the requirement. comprised of high mountains and deep gorges It was also verified in the test that the with significant topographical relief. Within the above-mentioned aerodynamic countermeasure circular region of a 10km diameter around the could also mitigate the vortex-induced vibration bridge site, there are 7 mountain ridges and 6 of the bridge deck significantly. Furthermore, the deep valleys, and the lowest altitude is 2000m wind-induced static instability and the buffeting while the highest altitude is 4160m. The highest responses of the bridge have also been analyzed altitudes of the 7 ridges are 4160m, 4120m, for both the service and construction states with 3600m, 3060m, 3460m and 2960m, and the 3D numerical approaches based on the terrain shows an increasing tendency of altitude aerodynamic parameters measured via wind from the southeast to northwest. The Polong tunnel test. Channel has a U-shaped cross section and is about 330m wide at its entrance. Its channel bed within the concerned region is relatively flat and straight with the ground altitude varying from 2004.90m to 2082.50m. The bridge is a seven span cable-stayed bridge with double PC towers, double cable planes and a main span of 430m. The composite girder is used for the main span deck whilst the concrete girder is employed for the side spans. The deck is 16.8m In width and 2.6m in depth, and is 85.2m above the channel 8. Prof. LU Xilin and the research team proposed a bed (valley bottom) at its mid-span. The concrete new type of RC-CFT joints. A new type of joints towers are 144.7m and 137.7m in height, is thus proposed with enlargement at the respectively, for the Chengdu- side one and the connection between columns and frame beams. Lasa-side one. To study the mechanical behavior, two scaled Up to now, the horizontal variation of wind static tests and five cyclic tests with the two characteristics at deck level along the bridge parametric variables of radius-to-width ratio and span and the vertical variation of wind reinforcement ratio, are carried out to obtain the characteristics at the location of the bridge failure modes of the specimens, crack towers have be investigated via a wind tunnel propagation and stress distribution of bars of the test of complex mountain terrain model, and the joints. Under static load, the ultimate capacity of design reference wind speeds at different wind the specimens are higher than the design inclination angles and yaw angles have been
- 8 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
envelope value; under cyclic load, specimens of different parameter variables, present different
failure modes, and rotation angle is large when beam segments are destroyed. Results show that the joints of RC-CFT laminated columns are
feasible in concept, and reasonable design can guarantee the design mechanism of "strong-joint-weak-member".
Experiment on Large-Scale Joints of Ring Beam and RC-CFT Laminated Columns
- 9 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
International Publications (Abstract)
1. Predictability of buckling temperature of axially loaded steel columns in fire (Published in Journal of Constructional Steel Research. 2012, 75(Aug.): 32-37.)
Predictability of buckling temperature of axially loaded steel columns in fire
Chao Zhang, Guo-Qiang Li, Yong-Chang Wang
ABSTRACT: In current Eurocode, the buckling temperature of steel columns can be calculated by either using an analytical approach or using a simple closed-form equation. This paper investigates the accuracy and limitations of those two calculation approaches. Test data on steel columns at elevated temperature reported in literature are used for comparison. The two approaches are found to give acceptable prediction for tests with moderate utilization factor, and unacceptable prediction for tests with either high utilization factor (μ0 > 0.83) or low utilization factor (μ0 < 0.16). The professional factor for the simple equation has a mean of 0.949 and a COV of 0.016, and can be best described by an extreme value distribution. The professional factor for the analytical approach has a mean of 1.018 and a COV of 0.013, and can be well described by either a normal, gamma or lognormal distribution.
2. Seismic analysis of a long tunnel based on multi-scale method (Published in Engineering Structures, 2013, 49: 572-587.)
Seismic analysis of a long tunnel based on multi-scale method
YU Haitao, YUAN Yong, QIAO Zongzhao, GU Yun, YANG Zhihao and LI Xiudi
ABSTRACT: Seismic analysis of long tunnels is difficult due to the lack of available computing power. In this paper, a multi-scale method is used to simulate dynamic responses of a long tunnel, which involves the concurrent discretization of the entire domain with both coarse- and fine-scale finite element meshes. The method can not only capture seismic responses along the full tunnel length, but also the detail structural responses of the segment linings and joints. Both material and contact nonlinearities are considered in the multi-scale model. Effects of buried depths, spectrum characteristics of input seismic waves, nonuniform seismic excitation and flexible joints, are thoroughly investigated on seismic responses of the tunnel. Results show: (1) the seismically induced stress of the tunnel is strongly correlated with the depth and is significantly amplified when the depth is one quarter of the incident wavelength; (2) the spectrum characteristics of the given seismic input waves do affect the amplitude and distribution of tunnel ovaling deformations as well as stresses; (3) the non-uniform seismic excitation will greatly aggravate the tunnel responses compared to the uniform excitation, and the effect of spatial distribution of earthquake excitation should be considered in the design of long tunnels; and (4) it is proved that the flexible joints can slightly mitigate the stress concentration, however, especial attention should be paid to the water proof capability of the flexible joints due to the expected additional deformation. Furthermore, stress and deformation response in lining segments and their connecting bolts are investigated and analyzed within the fine-scale model, and the capacity of critical structural components such as bolts and joints is evaluated.
- 10 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
3. An experimental study on sandwich composite panel infilled steel frames (Published in Advanced Steel Construction 2012,8(3): 226-241.)
An experimental study on sandwich composite panel infilled steel frames
Hetao Hou, Canxing Qiu, Jing-feng Wang and Guo-Qiang Li
ABSTRACT: Cyclic loading tests on eight full-scale one storey, one-bay test specimens were carried out to study the hysteretic behavior of steel frames infilled with sandwich composite panels. Six main influential parameters, including panel thickness, panel type, panel position, column orientation, beam-to-column connection type and connecting method of panel to steel frame are considered. Based on the experimental phenomena, seismic behaviors of specimens were reflected by hysterics loops, skeleton curves, curves of strength degradation, curves of stiffness degradation, ductility coefficient and equivalent damping coefficient. Test results show that the failure modes of panels and steel frames are concrete spalling around the embedded parts, weld fracture, and local buckling of beam, respectively. The integrity of the panel is better than the traditional walls. The success of connection between panel and steel frame is significant to the mutual work of the two parts. Both of increasing the panel thickness and strengthening the connection can improve the seismic behavior of structure. At the end of the paper, seismic design recommendations based on the analysis of ductility index and energy dissipation of the structures are presented.
4. Experimental and numerical study on the behavior of axially compressed high strength steel columns with H-section (Published in Engineering Structures. 2012, 43(Oct.):149-159)
Experimental and numerical study on the behavior of axially compressed high strength steel columns with H-section
Yan-Bo Wang, Guo-Qiang Li, Su-Wen Chen, Fei-Fei Sun
ABSTRACT: High strength steel (HSS) columns have been located in the research scope of the introduction of multiple column curve to the design codes. However, the determination of current design curves for predicting the maximum strengths of centrally loaded columns was mostly based on the experimental and analytical studies of mild carbon steels. Due to some test data (e.g. residual stress distribution) of HSS columns were not available, the selection of the design curves for HSS columns was inevitably based on some assumptions which need the further confirmation of experiments. In this paper, an experimental study on the ultimate strength of welded H-section columns fabricated from flame-cut steel with the nominal yield strength of 460 MPa under axial compression was conducted. This experiment program include six welded H-section columns with varies slenderness form 40 to 80. The nominal thickness of flanges and webs are 21 mm and 11 mm. A nonlinear finite element model considering the actually measured geometric imperfections and residual stresses was established and used to perform an extensively parametric study. The purpose of the experimental and numerical studies is to find an appropriate design curve for welded 460 MPa HSS H-section columns. By comparing the theoretical curves with the design curves specified in Eurocode3 and GB 50017-2003, it is found that the currently adopted design curves can be extend to welded H-section columns fabricated from flame-cut 460 MPa HSS plates. But the curve c of Eurocode3 is very conservative when H-section columns are buckling about weak axis.
- 11 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
5. Slim buckling-restrained steel plate shear wall and simplified model (Published in Advanced Steel Construction. 2012,8(3):282-294)
Slim buckling-restrained steel plate shear wall and simplified model
Ye Lu, Guoqiang Li
ABSTRACT: As a promising lateral load resisting elements in new or retrofit construction of buildings, buckling-restrained steel plate shear wall(BRSW)clamed with concrete plates had gained a great deal of attention of researchers and engineers. However, almost all of BRSWs being studied and employed are in small height-to-width ratio.Actually,in some situations, slim BRSW may be more serviceable if there do not have enough space to put wide BRSWs. Moreover, a new type BRSW was proposed in this paper. Several experimental investigations had been conductedc on this BRSW, including monotonic loading tests and cyclic loading tests on four sets of specimens with different height-to-width ratio from 2:1 to 4:1, as well as comparative tests on normal steel plate shear walls. The detailing of the walls was modified to improve their energy dissipation. A simplified equivalent cross-brace model was presented and verified by finite element analyses.
6. Tuned mass dampers for human-induced vibration control of the Expo Culture Centre at the World Expo 2010 in Shanghai, China (Published in Structural Engineering and Mechanics, 2012, 43(5):607-621.)
Tuned mass dampers for human-induced vibration control of the Expo Culture Centre at the World Expo 2010 in Shanghai, China
Xilin Lu, Kun Ding*, Weixin Shi and Dagen Weng
ABSTRACT: The Expo Culture Centre is one of the permanent buildings at the World Expo 2010 in Shanghai, China. The main structure has an oval shape and consists of 36 radial cantilever steel trusses with different lengths and inner frames made of concrete-filled rectangular steel tube members. Tuned mass dampers are used to reduce the excessive vibrations of the sixth floor that are caused by human-induced resonance. A three-dimensional analytical model of the system is developed, and its main characteristics are established. A series of field tests are performed on the structure, and the test results show that the vertical vibration frequencies of most structural cantilevers are between 2.5 Hz and 3.5 Hz, which falls in the range of human-induced vibration. Twelve pairs of tuned mass dampers weighing 115 tons total were installed in the structure to suppress the vibration response of the system. These mass dampers were tuned to the vertical vibration frequency of the structure, which had the highest possibility of excitation. Test data obtained after the installation of the tuned mass dampers are used to evaluate their effectiveness for the reduction of the vibration acceleration. An analytical model of the structure is calibrated according to the measured dynamic characteristics. An analysis of the modified model is performed and the results show that when people walk normally, the structural vibration was low and the tuned mass dampers have no effect, but when people run at the structural vibration frequency, the tuned mass dampers can reduce the floor vibration acceleration by approximately 15%.
- 12 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
7. Parameter calibrations and application of micromechanical fracture models of structural steels (Published in Structural Engineering & Mechanics, 2012, 42(2):153)
Parameter calibrations and application of micromechanical fracture models of structural steels
Fangfang Liao, Wei Wang*, Yiyi Chen
ABSTRACT: Micromechanical facture models can be used to predict ductile fracture in steel structures. In order to calibrate the parameters in the micromechanical models for the largely used Q345 steel in China, uniaxial tensile tests, smooth notched tensile tests, cyclic notched bar tests, scanning electron microscope tests and finite element analyses were conducted in this paper. The test specimens were made from base metal, deposit metal and heat affected zone of Q345 steel to investigate crack initiation in welded steel connections. The calibrated parameters for the three different locations of Q345 steel were compared with that of the other seven varieties of structural steels. It indicates that the toughness index parameters in the stress modified critical strain (SMCS) model and the void growth model (VGM) are connected with ductility of the material but have no correlation with the yield strength, ultimate strength or the ratio of ultimate strength to yield strength. While the damage degraded parameters in the degraded significant plastic strain (DSPS) model and the cyclic void growth model (CVGM) and the characteristic length parameter are irrelevant with any properties of the material. The results of this paper can be applied to predict ductile fracture in welded steel connections.
8. Investigations of microstructured behaviors of magnetorheological suspensions (Published in Journal of Intelligent Material Systems and Structures, 2012, 23(12):1351-1370)
Investigations of microstructured behaviors of magnetorheological suspensions
Yong-Bo Peng, Roger Ghanem, LI Jie
ABSTRACT: Microstructured behaviors of magnetorheological suspensions under magnetic fields with different magnitudes are investigated using a large-scale atomic/molecular massive parallel simulator. We investigated four kinds of typical characteristics of microstructured behaviors: (a) phase separation of structures, (b) statistics of chain and cluster sizes, (c) structural anisotropy of aggregates, and (d) fluctuation of suspensions. It is found that the higher the magnitude of external magnetic fields, the lesser the time the phase separation of structures undergoes. Magnetic dipolar particles, moreover, exhibit plane size-dependent structured behavior as they tend to cluster into nematic-like sheets along the shorter dimension of the field-perpendicular plane, even under conditions of uniform initial distribution and steady magnetic fields. In the presence of the shear, meanwhile, we observe that the suspensions move along with the flow field and connect to form long sheets along flow direction toward restraining the transportation of the shear flow. The application of the shear weakens the effect of the magnetic fields on the fluctuation of suspensions. Besides, the macroscale shear stress of magnetorheological suspensions is investigated as a function of the Mason number revealing that the constitutive model of rheological suspensions based on the Bingham law is of applicability.
- 13 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
9. Residual stresses in welded flame-cut high strength steel H-sections (Published in Journal of Constructional Steel Research. 2012,79(Dec.):159-165)
Residual stresses in welded flame-cut high strength steel H-sections
Yan-Bo Wang, Guo-Qiang Li, Su-Wen Chen
ABSTRACT: The presence of residual stress in members can significantly compromise the stiffness and fatigue life of steel structural components. Researches in this area are well documented for structural members of mild carbon steels. Nevertheless, due to the difference of stress–strain relations and material properties under ambient and high temperatures, the residual stress distribution in a high strength steel member is physically different from those fabricated from mild carbon steel. It is imperative to study the residual stress distribution for structural members fabricated from high strength steel. In this paper, the residual stresses of three welded flame-cut H-section columns with a nominal yield strength of 460 MPa but different cross-section dimensions were investigated. Both sectioning and hole-drilling methods were used in the measurement and the obtained residual stresses were compared between the two methods. The magnitudes and distributions of the measured residual stresses are identical with those of carbon steel, however in relatively smaller residual stress ratios. Finally, based on the measurements, a simplified residual stress distribution for 460 MPa high strength steel members with welded flame-cut H-section is proposed.
10. Performance-based seismic analysis and design of code-exceeding tall buildings in Mainland China (Published in Structural Engineering and Mechanics Engineering, 2012, 43(4):545-560)
Performance-based seismic analysis and design of code-exceeding tall buildings in Mainland China
Huanjun Jiang, Xilin Lu, and Jiejiang Zhu
ABSTRACT: Design codes provide the minimum requirements for the design of code-compliant structures to ensure the safety of the life and property. As for code-exceeding buildings, the requirements for design are not sufficient and the approval of such structures is vague. In mainland China in recent years, a large number of code-exceeding tall buildings, whether their heights exceed the limit for the respective structure type or the extent of irregularity is violated, have been constructed. Performance-based seismic design (PBSD) approach has been highly recommended and become necessary to demonstrate the performance of code-exceeding tall buildings at least equivalent to code intent of safety. This paper proposes the general methodologies of performance-based seismic analysis and design of code-exceeding tall buildings in Mainland China. The PBSD approach proposed here includes selection of performance objectives, determination of design philosophy, establishment of design criteria for structural components and systems consistent with the desirable and transparent performance objectives, and seismic performance analysis and evaluation through extensive numerical analysis or further experimental study if necessary. The seismic analysis and design of 101-story Shanghai World Financial Center Tower is introduced as a typical engineering example where the PBSD approach is followed. The example demonstrates that the PBSD approach is an appropriate way to control efficiently the seismic damage on the structure and ensure the predictable and safe performance.
- 14 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
11. Theoretical and experimental investigation on fragment behavior of architectural glass panel under blast loading (Published in Engineering Failure Analysis. 2012,26 (Dec):293-303.)
Theoretical and experimental investigation on fragment behavior of architectural glass panel under blast loading
Jie Ge, Guo-Qiang Li , Su-Wen Chen
ABSTRACT: In this study, the analysis on broken of architectural glass panel subjected to blast loading is investigated. The architectural glass panel breaks up into fragments when it is overloaded by the external blast. The projection velocity and splash distance of glass fragments are very important parameters to establish fragment flight trajectory. In this paper, the fragment projection velocity is formulated based on energy principles, and the flight path is proposed by solving the acceleration equations established according to the variations of motion direction and force direction of the fragment. Explosive tests of architectural glass panel were carried out in the field test site to investigate the pressure loss effect on the projection velocity during the deformation of the panel. Empirical expressions of glass fragment flight trajectory are developed using a combined theoretical and experimental approach, which may be used to estimate the hazard from broken glazing.
12. Overview of performance-based seismic design of building structures in China (Published in International Journal of High-Rise Buildings. 2012, 1(3):169-179)
Overview of performance-based seismic design of building structures in China
Guo-Qiang Li, Yan-Bin Xu, Fei-Fei Sun
ABSTRACT: The development history, the current situation and the future of the performance-based seismic design of building structures in China are presented in this paper. Firstly, the evolution of performance-based seismic design of building structures specified in the Chinese codes for seismic design of buildings of the edition 1974,1978, 1989,2001 and 2010 are introduced and compared. Secondly, in two parts, this paper details the provisions of performance-based seismic design in different Chinese codes. The first part is about the "Code for Seismic Design of Buildings"(GB50011)(edition 1989,2001 and 2010)and "Technical Specification for Concrete Structures of Tall Building", which presents the concepts and methods of performance-based seismic design adopted in Chinese codes; The second part is about "Management Provisions for Seismic Design of Out-of-codes High-rise Building Structures" and "Guidelines for Seismic Design of Out-of-codes High-rise Building Structures", which concludes the performance-based seismic design requirements for high-rise building structures over the relevant codes in China. Finally, according to those mentioned above, this paper pointed out the imperfections of current performance-based seismic design in China and proposed the possible direction for further improvement.
- 15 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
13. Damages of the Shaohuoping road tunnel near the epicenter (Published in Structure and Infrastructure Engineering, 2013, 9(9): 935-951)
Damages of the Shaohuoping road tunnel near the epicenter
YU Haitao, YUAN Yong, LIU Xian, LI Yuwen and JI Suiwang
ABSTRACT: Numerous infrastructures including national roads, tunnels, etc. in Sichuan Province were damaged to various extents in China's Wenchuan earthquake in 2008. The Shaohuoping road tunnel, near the epicentre of the earthquake, was the typical damaged one. The damage modes of different parts of the Shaohuoping tunnel were summarised based on the spot investigation data. It was found that various damages involving cracking and spalling of concrete lining were observed on different parts of the tunnel. The earthquake damages of critical positions, portal section and body portion, were simulated and analysed by finite element numerical model proposed in this paper. Influences of vertical motion on seismic responses of the tunnel were also studied by means of the finite element simulation. The simulation responses were compared with the spot investigations of earthquake structural damages to different parts of the tunnel. The comparisons showed a good agreement, which indicated that, the damage mechanism of the tunnel can be predicted reliably by the proposed finite element model. Furthermore, the results show that the damage of different parts of the tunnel is mainly controlled by horizontal ground motions, but the tunnel may suffer more damages with the effect of the vertical motion.
14. Effects of loading patterns on seismic behavior of CHS KK-connections under out-of-plane bending (Published in Journal of Constructional Steel Research, 2012, 73:55-65)
Effects of loading patterns on seismic behavior of CHS KK-connections under out-of-plane bending
Wei Wang, Yiyi Chen, Bida Zhao
ABSTRACT: This paper deals with experimental investigations to study the seismic behavior of circular hollow section (CHS) KK-connections used in steel tubular structures. Cyclic out-of-plane bending (OPB) loading patterns were varied in testing two full-scale specimens in order to evaluate their effect on connection behavior. Test results indicated that the strength efficiency of these connections significantly depended on the loading patterns. CHS KK-connections under alternate opening and closing out-of-plane bending (AOCO) developed more satisfactory levels of ductility and energy dissipation than that under alternate clockwise aligned and counter-clockwise aligned out-of-plane bending (ACCO), although the final failure modes for both showed similar fracture initiated from the chord wall. This observation was further verified by the proposed simplified analytical model results. Finite element (FE) analyses were performed to simulate the experimental behavior and facilitate the interpretation of the important test observations. Additionally, it was found that the energy dissipation due to the ductile chord crack propagation could be utilized effectively to some extent for earthquake resistance.
- 16 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
15. Shaking table model test and numerical analysis of a supertall building with high- level transfer storey (Published in Struct. Design Tall Spec. Build. 2012, 21:699–732)
Shaking table model test and numerical analysis of a supertall building with high-level transfer storey
LU Xilin, CHEN Yue and MAO Yuanjun
ABSTRACT: The seismic behaviour of a 53-storey tower with the height of 250 m is investigated in this paper. This supertall building is composed of a reinforced core, two outrigger trusses (a strengthened storey at 20th 21st floor and a high-level transfer storey at 37th∼38th floor) and eight composite (steel-encased concrete) mega-columns below the high-level transfer storey in the exterior perimeter of the building. Due to the discontinuity of the eight composite mega-columns, they are replaced by 33 upper-close columns at the 37th∼38th level. This paper describes tests performed on a 1/30 scaled model of the building to study its dynamic characteristics and to evaluate its earthquake resistant capacity. The model test results indicate that the prototype structure is able to withstand an earthquake of intensity 7 without severe damage. In addition, a 3D finite element analysis of model structure was carried out and the analytical results were compared with the experimental ones to gain a better understanding of the structural behaviour.
16. Algorithms for seismic topology optimization of water distribution network (Published in SCIENCE CHINA-TECHNOLOGICAL SCIENCES, 2012,55(11):3047-3056)
Algorithms for seismic topology optimization of water distribution network
Liu Wei, Xu Liang, Li Jie
ABSTRACT:As an essential lifeline engineering system, water distribution network should provide enough water to maintain people's life after earthquake in addition to working under daily operation. However, the design of water distribution network usually ignores the influence of earthquake, resulting in water stoppage in large area during many recent strong earthquakes. This study introduced a seismic design approach of water distribution network, i.e., topology optimization design. With network topology as the optimization goal and seismic reliability as the constraint, a topology optimization model for designing water distribution network under earthquake is established. Meanwhile, two element investment importance indexes, a pipeline investment importance index and a diameter investment importance index, are introduced to evaluate the importance of pipelines in water distribution network. Then, four combinational optimization algorithms, a genetic algorithm, a simulated annealing genetic algorithm, an ant colony algorithm and a particle swarm algorithm, are introduced to solve this optimization model. Moreover, these optimization algorithms are used to optimize a network with 19 nodes and 27 pipelines. The optimization results of these algorithms are compared with each other.
- 17 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
17. Multiscale method for long tunnels subjected to seismic loading (Published in International Journal for Numerical and Analytical Methods in Geomechanics, 2013, 37(4): 374-398)
Multiscale method for long tunnels subjected to seismic loading
YU Haitao, YUAN Yong and BOBET Antonio
ABSTRACT: A multiscale method for the dynamic analysis of underground structures is proposed, which involves the concurrent discretization of the entire domain with both coarse-scale and fine-scale finite element meshes. The coarse-scale mesh is employed to capture seismic response characteristics of the integral system, whereas the fine-scale mesh describes in detail the dynamic response in positions of potential damage or interest. For both the coarse-scale and fine-scale meshes to overlap, a bridging scale term is introduced so that compatibility of dynamic behavior between the coarse- and fine-scale models is enforced. Both material and contact nonlinearities are considered in the multiscale model. As an application, the model is used for large-scale seismic response of a newly built long-distance shield tunnel. Results show that this multiscale method does not have spurious wave reflections at the fine/coarse interface and does not need filtering procedures, which is an advantage compared with the displacement coupling method. Stress and deformation response in lining segments and their connecting bolts are investigated and analyzed within the fine-scale model, and the capacity of critical structural components, such as bolts and joints is evaluated.
18. Experimental investigations of stochastic control of randomly base-excited structures (Published in Advances in Structural Engineering, 2012,15(11): 1963-1975.)
Experimental investigations of stochastic control of randomly base-excited structures
LI Jie, Zhen Mei, CHEN Jianbing and PENG Yongbo
ABSTRACT: A series of numerical simulations and experimental verifications on vibration control of structures subjected to earthquake excitations have been conducted. In most existing researches, only several ground motions at different levels are considered, and the efficacy of vibration suppression is usually denoted by the reduction of peak responses. In this paper, a complete shaking-table test on a controlled structured is carried out, in which the randomness inherent in the earthquake ground motions was considered. The representative time histories of ground accelerations, as the base excitation, are generated employing the stochastic ground motion model. The stochastic response analyses of the experimental structures with and without control are conducted, respectively, based on various criteria, including peak responses, RMS responses and PDFs of responses. Experimental results indicate that the seismic performance of the test structure with magnetorheological(MR) dampers is significantly improved compared with that of the uncontrolled structure. The investigation on PDFs of the stochastic responses with control system is very important to better understand the structural performance.
- 18 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
19. Simplified algorithm of the novel steel-concrete mixed structure under lateral load (Published in International Journal of High-Rise Buildings. 2012,1(4):247-254)
Simplified algorithm of the novel steel-concrete mixed structure under lateral load
Liang Li, Guo-qiang Li, and Yu-shu Liu
ABSTRACT: In order to improve the seismic behaviors of traditional steel-concrete mixed structure, a novel steel concrete mixed structure consisting of steel frames braced with buckling restrained braces(BRBs) and a concrete tube is proposed. Based on several assumptions, the simplified mechanical model of the novel mixed structure is established, and the shear and bending stiffness formulas of the steel frames, BRBs and concrete tube are respectively introduced. The equilibrium differential equation of the novel mixed structure under horizontal load is developed based on the structural elastic theory. The simplified algorithms to determine the lateral displacement and internal forces of the novel mixed structure under the inverted-triangle distributed load, uniformly load and top-concentrated load are then obtained considering several boundary conditions and compatible deformation conditions. The effectiveness of the simplified algorithms is verified by FEM comparison.
20. Experimental investigation on fatigue behavior of steel reinforced concrete composite beam-to-girder joints (Published in International Journal Steel Structures, 2012, 12(4):461-472)
Experimental investigation on fatigue behavior of steel reinforced concrete composite beam-to-girder joints
Lewei Tong*, Qingjun Xian, Liying Zhou, Yiyi Chen and Yunfeng Zhang
ABSTRACT: Fatigue behavior and failure mechanism of steel reinforced concrete (SRC) beam-to-girder joints is discussed in this paper, which is intended for use in high-speed railway station structures due to their high stiffness and load capacity. Three identical SRC beam-to-girder joint specimens were designed and tested under static loading and two stages of fatigue loading. In the first stage of fatigue loading, the specimens were subjected to design fatigue load for 2 million cycles, while during the second stage, the specimens were loaded to failure under increased fatigue loading amplitude in order to know its fatigue strength and failure mechanism. The constructional details of SRC beam-to-girder joint specimen and the method of loading and testing are presented. The comparison in structural behavior of the joint is made between under static and fatigue loading. Fatigue failure characteristics of the joint are described in detail. It is found that the SRC beam-to-girder joints remained in their elastic range and the concrete surface crack did not exceed 0.1 mm when subjected to design static loading and 2 million cycles of design fatigue loading. There was no significant difference in structural behavior of each component of SRC composite beam between static and fatigue loading. Fatigue failure occurred after these joints were applied higher-level fatigue loading for another 0.70 to 0.91 million cycles. Fatigue crack was initiated at the tension flange of I-shape steel of beam connected by welding to the flange of I-shape steel of girder or at the hole in tension flange of I-shape steel of beam, and then the crack propagated along flange width and web height of the I-shape steel in beam until the I-shape steel lost loading capacity due to lack of enough cross section. The fatigue behavior of constructional detail of the I-shape steel played a key role in the fatigue strength of the SRC beam-to-girder joints. Discussions on improving the fatigue strength of SRC beam-to-girder joints and future research aspects are presented finally.
- 19 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
21. Experimental study on the bend and shear behaviors of steel-concrete composite beams with notched web of inverted T-shaped steel section (Published in International Journal of Steel Structures. 2012, 12(3):391-401.)
Experimental study on the bend and shear behaviors of steel-concrete composite beams with notched web of inverted T-shaped steel section
Guo-Qiang Li, Xianhui Li, Liang LI
ABSTRACT: A new steel-concrete composite beam with notched web of inverted T-shaped steel section is proposed in this paper. This composite beam is composed of concrete slab and inverted T-shaped steel beam. Experimental studies on the bend and shear behavior of the composite beam are conducted. Four specimens are tested to investigate the bend behavior of the novel composite beam, and the formula for predicting the bend capacity is proposed and verified by comparing the results between predicted with the formula and the measured from the tests. Six specimens are also tested to study the shear behavior and the formula for estimating the shear capacity of the novel composite beam is recommended on the base of the test results. The formulas proposed in this paper may be employed to estimate the bend and shear capacity of the composite beam with notched web of inverted T-shaped steel section for application in practice.
22. Shaking table test on China Pavilion for EXPO 2010 Shanghai China (Published in Struct. Design Tall Spec. Build. 2012, 21:265–282)
Shaking table test on China Pavilion for EXPO 2010 Shanghai China
YANG Juhua, CHEN Yun, JIANG Huanjun and LU Xilin
ABSTRACT: Modern structural engineering tends to progress towards more novel high-rise structures through gradually improved methods of design and wide use of new materials. The National Hall of China Pavilion for Expo 2010 Shanghai is such a building specially designed with a shape of an inverted trapezoid in elevation and local discontinuity of floor slabs in plan for aesthetic and functional considerations. The preliminary analysis shows that the fundamental vibration mode of this structure is a torsional mode due to the special shape, thus resulting in the period ratio between the first torsional mode and the first translational mode exceeding the limit value stipulated in Chinese code. Shaking table tests of a 1/27-scale structural model were performed to observe the seismic response characteristics, and verify the seismic safety of the structure. This paper presents the results of the shaking table tests in terms of dynamic properties, global responses, as well as local responses. It was found that the torsional effects were not significant by the analysis of the ratio between the maximum displacement and the average displacement of floor and torsional angle. Finally, weak points were identified, and some corresponding suggestions were put forward to improve the overall seismic performance of this structure.
- 20 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
23. Mechanical properties of high-strength bolts after fire (Published in Proceedings of the ICE - Structures and Buildings. 2012, 165(7):373-383)
Mechanical properties of high-strength bolts after fire
Guo-Biao Lou, Shan Yu, Rui Wang, Guo-Qiang Li
ABSTRACT: High-strength bolts which are widely used in steel structural connections are more temperature-sensitive than hot finished steel. To obtain the mechanical properties of high-strength bolts after fire including stress-strain curves, strength and elasticity modulus, a series of experiments on 8. 8S bolts and 10.9S bolts were carried out in this study. In order to simulate the real situations in event of fire, both natural cooling and water cooling were employed in the tests. The test results show that heating and cooling have a great effect on the mechanical properties of high-strength bolts after fire when the temperature of high-strength bolts attained is above 400℃. And the effect of natural cooling is very different from that of water cooling when attained temperature is above 700℃. After natural cooling, the stressstrain curves become softer and more ductile, and the strength is regained slightly. After water cooling, the ductility reduces significantly whereas the strength is regained to a great extent. For 10.9S high-strength bolts subjected to watercooling the post-fire strength even exceeds the normal strength approximately 20% when the attained temperature is in excess of 800℃.
List of Other Recent Publications
1. LI Guoqiang, Wang Kaiqiang, LIU Yushu, Chen Suwen. Catenary action of restrained steel beam against progressive collapse of steel frameworks. J.of Central South University. 2012,19(2):537-546. 2. LI Guoqiang, YAN Xiaolei, CHEN Suwen. Experimental study on the ultimate bearing capacity of welded box-section columns using Q460 high strength steel in bending and axial compression. China Civil Engineering Journal. 2012,45 (8):67-73. 3. LI Guoqiang, ZHANG Zhe, SUN feifei. Introduction to"Technical specification for steel structures with corrugated webs" CECS291:2011. Standardization of Engineering Construction. 2012(8):45-50. 4. LIU Bing, WANG WeiYong, LI Guoqiang, DAI GuoXin. Study of fire resistance of high strength Q460 steel columns. China Civil Engineering Journal. 2012,45(9):19-26. 5. LI Guoqiang, YAN Xiaolei, CHEN Suwen. Experimental study on bearing capacity of welded H-section columns using Q460 high strength steel under bending and axial compression. Journal of Building Structures. 2012,33(12):31-37. 6. CHEN Suwen, ZHU Chenguang, LI Guoqiang, GE Jie. Blast test and finite element analysis of point-supported glass curtain wall. Journal of Building Structures. 2012,33(12):99-105. 7. PENG Yongbo, LI Jie. Optimal damping control scheme for random vibration of high-rising building structures. China Civil Engineering Journal, 2012, 45(S2): 168-171. 8. Liu Wenfeng, Chen Jianbing, Li Jie. Stochastic optimal vibration control of offshore wind turbine tower systems using TLCD. China Civil Engineering Journal, 2012, 45(Supp.2): 22-26 9. PENG Yongbo, Li J, Ghanem R. Plate size-dependent structured behaviors of magnetorheological fluid suspensions. Proc. of the 12th Int’l Symp. on Structural Engineering (ISSE-12), 2012, Nov. 17-19, Wuhan, China. 10. PENG Yongbo, LI Jie. Sequential procedure for system reliability optimization of passively damped structures. ISRERM 2012: Proc. of the Int’l Symp. on Reliability Engineering and Risk Management, 2012, Aug. 5-8, Japan. 11. PENG Yongbo, LI Jie. Ghanem R. Integrated design of damper placement and parameters for passive control of randomly base-excited structures. Proc. of the 15th World Conf. on Earthquake Engineering, 2012, Sep.24-28. 12. LI Jie, PENG Yongbo. Modeling of phase spectrum and simulation of nonstationary earthquake gound motions. Proc. of the 15th World Conf. on Earthquake Engineering, 2012, Sep. 24-28, Portugal. 13. LI Jie, XU L, PENG Yongbo. Seismic reliability based optimization and design of urban water supply networks.
- 21 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
ISRERM 2012: Proc. of the Int’l Symp. on Reliability Engineering and Risk Management, 2012, Aug. 5-8, Japan. 14. CHEN Jianbin, LI Jie, ZHANG S.H., WU P.J. PDEM-Based global reliability of engineering structures (Invited plenary lecture). In: ZHAO YanGang, LI Jie, LU Zhaohui & Takasuke Saito (ed). Reliability Engineering and Risk Management (Vol.3) –Proc. of the 2th Inter’l Symp. on Reliability Engineering and Risk Management (ISRERM 2012):55-63. Japan, Aug. 5-8, 2012. Central South University Press, 2012. ISBN: 978-7-5487-0559-8. 15. YUAN S.R., CHEN Jianbin, LI Jie. Dimension reduction of FPK equation and its applications in seismic response of structures. In: DAI Jianguo & ZHU Songye (ed). The Future of Structural Engineering: Research, Practice and Education – Proc. of the 4th Asia-Pacific Young Researchers and Graduates Symp.: 46-52, Hong Kong, China, 2012, Dec. 4-5. The Hong Kong Polytechnic University. ISBN: 978-962-367-758-5. 16. CHEN Jianbing, ZHANG Shenghan, LI Jie. An efficient algorithm for the probability density evolution analysis of strong nonlinear structures. In: ZHU Hongping, HUANG Bin, RU Jiping (ed). Proc. of the 12th Inter’l Symp. on Structural Engineering (ISSE12):484-489. Nov.17-20, 2012. China. Science Press. ISBN: 978-7-03-035787-8. 17. CHEN Jianbing, XU Jun, LI Jie. Probability density evolution of multi-dimensional nonlinear stochastic dynamical systems:80. In: BAI Yilong, WANG Jianxiang, FANG Daining (ed). Abstract Book of the 23rd Inter’l Congress of Theoretical and Applied Mechanics (ICTAM2012), ISBN 978-988-16022-3-7. Aug. 19-24, Beijing, China. 18. LIU Wei, XU Liang, LI Jie. Seismic Topology optimization of water distribution networks, Inter’l Symp. on Reliability Engineering and Risk Management 2012, Japan 19. SUN Qianwei, LIU Wei, LI Jie. Analysis Model of Buried Pipeline Network under Multi-Support Seismic Excitations, 15th World Conference on Earthquake Engineering, 2012, Portugal 20. CHEN Jun, MA Jun and WU Min, Unified non-stationary mathematical model for near-ground surface strong winds, The 2012 World Congress on Advances in Civil, Environmental and Materials Research (ACEM'12), 2012, Aug. 26-29, Korea: 234, (ISBN:978-89-89693-34-5 98530) 21. CHEN Jun, LIN Taotao , LI Xiang and ZHANG Xiaoqin, Assessment of wind-induced structural fatigue based on joint probability density function of wind speed and direction, The 2012 World Congress on Advances in Civil, Environmental and Materials Research (ACEM'12), 2012, Aug. 26-29, Korea 22. ZHANG Mengshi, ZHAO Yonglei and CHEN Jun, Single rigid body model of a walking/jumping human: experimental verification and load simulation, The 25th KKCNN Symp. on Civil Engineering, Oct. 22-24, 2012, Korea 23. CHEN Jun, PENG Yixin, YE Ting, Experimental investigation on pedestrian load, The 25th KKCNN Symp. on Civil Engineering, Oct. 22-24, 2012, Korea 24. ZHANG Mengshi, CHEN Jun, PENG Yixin, Reconstruction of human induced walking load based on multi-segmental rigid model, Proc. of the 12th Inter’l Symp. on Structural Engineering, Vol.1, Nov.16-19, 2012, Wuhan, China, 2012 25. CHEN Jun, PENG Yixin, YE Ting, Loads generated by human walking: experiments and numerical modeling, Proc. of the 12th Inter’l Symp. on Structural Engineering, Vol.1, Nov.16-19, 2012, Wuhan, China,2012 26. CHEN Jun, WANG Ling, CHEN Bo, YAN Shixin, Loads generated by human jumping: experiments and numerical modeling, Proc. of the 12th Inter’l Symp. on Structural Engineering, Vol.1, Nov.16-19, 2012, Wuhan, China, 2012 27. WANG Xinxin, ZHAO Ming, LI Suzhen. An Improved Cross-correlation Algorithm Based on Wavelet Transform and Energy Feature Extraction for Pipeline Leak Detection. Proc. of Inter’l Conf. on Pipelines and Trenchless Technology, Oct. 19-22, 2012, Wuhan, China. 28. HU Yuchan, ZHAO Ming, LI Suzhen. Pipeline Defect detection Based on Ultrasonic Guided Wave Technique using Fiber Bragg Gratings. Proc. of Inter’l Conf. on Pipelines and Trenchless Technology, October 19-22, 2012, China. 29. SUN S. W. and SUN L. M., Statistical traffic load model based on weight in motion monitoring for bridge safety assessment, 18th IABSE, Seoul, Korea, Sep.16-21 2012. 30. SUN L. M., SUN S. W., Bridge condition assessment based on long-term strain and vehicle monitoring, Life-Cycle and Sustainability of Civil Infrastructure System (IALCCE), Vienna, Austria, Oct.3-6, 2012 31. SUN L. M., WEI J., XIE W., Experimental study on seismic performance of subsidiary piers of long-span cable-stayed bridge with energy dissipation, 12 Inter’l Symp. in Structural Engineering, Wuhan, China, Nov.17-19, 2012. 32. WU P., HUANG H. W., SUN L. M., Vibration mitigation of stay cable using optimally tuned MR Damper based on frictional equivalent model, 18th IABSE, Seoul, Korea, Sep.16-21 2012. 33. HUANG H. W., SUN Y. S., YANG J. N., Damage identification of a continuous beam using sequential nonlinear LSE approach, 15WCEE, Lisbon, Portugal, Sep.23-28, 2012. 34. HUANG H. W., SUN Y. S., YANG J. N. , Damage identification of a cable-stayed bridge model using Sequential Nonlinear LSE Approach, The 1st Inter’l Conf. on Performance-based and Life-cycle Structural Engineering, Hong Kong, China, 5-7 Dec. 2012. 35. SUN Z., YAN T., First year data mining for vibration based condition monitoring of a cable stayed bridge, IABMAS, 2012.
- 22 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
36. SUN Z., ZHOU B. L., Decentralized damage detection diagnosis for truss beam structure considering modeling error, IABMAS, 2012. 37. SUN Z., QI Z.Q., Prestressed beam condition assessment using vibration response considering bridge-vehicle interaction, ACEM, 2012. 38. SUN Z., DUAN Z. T., YAN Y. X., Operational response analysis of a tower crane structure considering crane-payload interaction, ACEM, 2012. 39. Wang Huaifeng, Lou Menglin, Chen Xi etal. Parametric study of influence of surrounding superstructure on infrastructure's dynamic response. Journal of Tongji University, 2012, 40(12):1773-1777 40. Gao Yonghong, Fan Junqi, Lou Menglin. Experiment research on new grade-3 steel-bars dynamic mechanical property and its application to blast-resistant structure. Journal of Tongji University, 2012, 40(12):1778-1782 41. Lou Menglin, Kang Shuai, Yin Lin. Shaking table teat on damping effect. Journal of Tongji University, 2012,40(3):402-407 42. Lou Menglin, Yin Lin. Degree of freedom reduction technique for interface of constrained substructure based on node displacement interpolation. Engineering Mechanics, 2012, 29(9):25-29 43. Shen Fei, Lou Menglin. Influence of high modes of super high-rise building on its seismic responses. Engineering Mechanics, 2012,29(Sup. I):23-28 44. Qiao Guandong, Lou Menglin. Effect of vertical artificial boundary on seismic responses analysis of large-scale open caisson. Engineering Mechanics, 2012,29(Sup. I):111-114 45. Zhang Xi, Lou Meng, Lin Qiao. Analysis of traveling wave effect on seismic responses of twin-tower structure under horizontal and vertical seismic excitations. Engineering Mechanics, 2012,29(Sup .II): 133-138 46. Zhang Rulin, Lou Menglin. Study of nonlinear dynamic constitutive model of soft soils based on Davidenkov skeleton curve. Rock and Soil Mechanics,2012,33(9):2588-2594 47. Shan Taotao, Lou Menglin,Jia Baoyin. Preliminarily exploring a problem of track vertical profile irregularity of Shanghai metro line 1. Journal of vibration and Shock, 2012, 31(12):53-58 48. Lou Menglin, Zhang Xi, Lin Qiao. Analysis of Horizontal Seismic Response of Twin-Towers structure under traveling wave excitation. Chinese Quarterly of Mechanics, 2012, 33(1):137-145 49. Lou Menglin, Li Shun, Pan Xi. Motion characteristics of large-scale bridge's pile foundation under earthquake. Chinese Quarterly of Mechanics, 2012, 33(2):281-289 50. Huang Mingkai, Lou Menglin, Lin Qing. Space coherence effect analysis on seismic responses of Pudong Airport Terminal (II) under horizontal multi-support excitation. Chinese Quarterly of Mechanics, 2012, 33(2):322-330 51. Lou Menglin, Yin Lin, Kang Shuai. Analysis methods and current situation of seismic design of underground structures. Protective Engineering, 2012,34(5):72-78 52. Lou Menglin, Wang Jianzhe. Seismic response analysis of one hundred meters high-rise building in Shanghai under strong earthquake of near field. Structural Engineers, 2012,28(4):90-97 53. Tian Zhongye, Lou Menglin. Seismic response analysis of a cylindrical reticulated shell under vertical traveling wave excitations. Structural Engineers, 2012,28(6):1-7 54. Lou Menglin, Chen Peide. Discussion on problem of acceleration response spectrum standardization in engineering site safety evaluation. Technology for Earthquake Disaster Prevention, 2012,7(2):121-129 55. Lou Menglin, Zhang Xi. Analysis of Vertical seismic response of twin-towers structure under traveling wave excitation. Journal of Architecture and Civil Engineering, 2012, 29(1):94-101 56. YU H.T., YUAN Y. Analytical solution for an infinite Euler-Bernoulli beam on a visco-elastic foundation subjected to arbitrary dynamic loads. Journal of Engineering Mechanics, ASCE, 2013. (In Press, DOI: 10.1061/ (ASCE) EM. 1943-7889.0000674, SCI retrieve) IF: 1.116. 57. CHEN Z.Y., YU H.T., YUAN Y. Full 3D seismic analysis of a long-distance water conveyance tunnel, Structure and Infrastructure Engineering, 2012. (In Press, DOI: 10.1080/15732479.2012.707659) 58. YU H.T., YUAN Y. Multi-scale dynamic analysis method for underground structures. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(6): 1028-1036. 59. YU H.T., YUAN Y., ZHU Y.M., Wang J.H. Dynamic modeling of underground structure based on viscoelastic boundaries under construction vibration. Journal of Shanghai Jiaotong University (Science), 2012, 46(1): 64-68. 60. YU H.T., YUAN Y., XU G.P., CHEN Y. Issues on the seismic design and analysis of ultra-long immersed tunnel . Journal of Shanghai Jiaotong University (Science), 2012, 46(1): 94-98. 61. ZHANG H.J., ZHU L.D., The influence of additional attack angle on flutter analysis result of 1400m cable stayed bridge, Advances in Civil Engineering and Building Materials - Selected Peer Reviewed Papers from 2012 2nd Inter’l Conference on Civil Engineering and Building Materials, CEBM 2012, Hong Kong, Nov. 17-18, 2012 pp. 551-555 62. XU Y.L., ZHANG X.H., ZHAN S., HONG X.J., ZHU L.D., etc., Testbed for Structural Health Monitoring of Long-span
- 23 - Disaster Reduction News Volume 8, Number 2, Mar., 2013
Suspension Bridges, Journal of Bridge Engineering, 2012, 17(6): 896-905 63. HUANG Dongmei, Zhu Ledong, Chen Wei, Amplitude characteristics of wind loads on high-rise buildings with interference from surrounding buildings, China Civil Engineering Journal, 2012, 45(9):2-10 64. DING Quanshun, ZHU Ledong, Equivalent static wind loads for stochastic vibration of a towering structure based on its aeroelastic-model wind tunnel test, Journal of Vibration and Shock, 2012, 31(24): 34-37,59 65. DING Quanshun, WANG Jing, ZHU Ledong, Coupled free vibration technique for identifying flutter derivatives of bridge decks, Journal of Vibration and Shock, 2012, 31(24): 5-8+25 66. SU Ning-fen, LU Xi-lin, ZHOU Ying, QI Hu. Seismic behavior of super-tall building with setbacks in elecation. Journal of Zhejiang University (Engineering Science). 2012, 46(10): 1893-1899. 67. LU Xilin, SU Ningfen, ZHOU Ying. IDA-based seismic fragility analysis of a complex high-rise structure. Journal of Earthquake Engineering and Engineering Vibration. 2012, 32(5): 19-25. 68. ZHOU Bin, LU Xilin, REN Xiaosong. Theoretical analysis and experimental research of pull-out behavior of bonded steel bar embedded in brick wall of existing masonry structure. Journal of Building Structures. 2012, 33(11): 132-141. 69. Yin Xiaowei, Lu Xilin, Lu Wensheng. Experimental study on hysteretic properties of large-size SRC columns with high ratio of encased steel. China Civil Engineering Journal. 2012, 45(12): 91-98. 70. JIANG Huanjun and FU Bo. Discussion of "Closed-form expressions for lateral deflection of low-rise rigidly framed concrete structures". Canadian Journal of Civil Engineering 2012, 39(10): 1156-1157. 71. JIANG Huanjun, ZUO Huan and CUI Longfei. Comparison of seismic behavior of super-tall building structures with different type of steel-concrete composite shear walls. Structural Engineers, 2012, 28(5): 35-41. 72. JIANG Huanjun, LU Xilin and LIU Xiaojuan Liu. Performance-based Seismic Design Principles and Structural Analysis of Shanghai Tower. Proc. of The First Inter’l Conference on Performance-based and Life-cycle Structural engineering 2012, Dec. 5-7, Hong Kong, China, Paper No. 065. 73. JIANG Huanjun, LU Xilin, FU Bo and CHEN Linzhi. Constant-damage yield strength spectra. Proc. of 15th World Conference on Earthquake Engineering 2012, Sep. 24-28, Lisbon, Portugal, Paper No. 2218. 74. WANG Bin, JIANG Huanjun Jiang and LU Xilin. Experimental study on damage behavior of reinforced concrete shear wall with modern detailing. Proc. of 25th KKCNN Symp. on Civil Engineering 2012, Oct.22-24, Korea, 472-475. 75. YIN Xiaowei, JIANG Huanjun, LU Wensheng and LU Xilin. Shaking table model test of a super high-rise building with CFT frame and core Wall. Proc. of 15th World Conference on Earthquake Engineering 2012, September 24-28, Lisbon, Portugal, Paper No. 2667. 76. WANG Bin, JIANG Huanjun and LU Xilin. Seismic performance of steel plate-reinforced concrete composite shear wall. Proc. of 15th World Conference on Earthquake Engineering 2012, Sep. 24-28, Portugal, Paper No. 1232. 77. LU Xilin and JIANG Huanjun. Recent Study on Seismic Performance and Response Control of Tall Buildings. Proc. of 18th IABSE Congress 2012, September 19-21, Seoul, Korea. 78. QIAN Jiang, XUAN Weihui, ZHOU Ying, LU Wensheng and LU Xilin. Numerical Simulation on Seismic Performance of a Super Tall-building with High-level Transfer Storey, Chinese Quarterly of Mechanics , 2012, 33(3): 427-435. 79. LI Peizhen, HOU Xiaoying, LIU Yanmei and LU Xilin. Shaking Table Model Tests on Dynamic Structure- Soil-Structure Interaction during Various Excitations. 15th World Conference on Earthquake Engineering, Sept 23-28, 2012, Lisbon, Portugal. 80. LI Peizhen, MA Dongya, ZENG Daming and LU Xilin. Numerical Simulation of Pile-Soil Interaction Considering Sand Liquefaction under Earthquake. Applied Mechanics and Materials, 2012, Vols. 226-228, Part2: 1019-1022.
State Key Laboratory of Disaster Reduction in Civil Engineering
Administration office:
Bridge Hall, Tongji University, 1239 Si Ping Road, Shanghai Post Code: 200092 Tel: +86-21-65982397 Fax: +86-21-65984882 Web: www.tongji.edu.cn/~sldrce E-mail: lifrean@ tongji.edu.cn
- 24 -