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VSL-Intrafor NEWS 2002

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VSL-Intrafor NEWS 2002 NEWS THE VSL-INTRAFOR MAGAZINE• ISSUE TWO-2002 Strategies for packages Environmental friendly foundations Full span pre-casting in Taiwan FACTS&TRENDS 4 VSL Damping system is launched 4 VSL at fib 2002 Exhibition 5 DAMPERS 4 COVER STORY 6 COMPREHENSIVE SERVICES & PACKAGES High skills packed together 6 Interview: Jacky Mazars, an expert in natural risks and structural vulnerability. 11 SITE INSIGHTS 12 Hong Kong: Even deeper at Package 7 foundations 12 MONITORING 10 Australia: The tallest VSoL® for Mount Arthur 14 A two-bridge slide in Prague, CZ 16 Europa Bridge in Portugal: ® High-tech response 16 VSoL 14 Innovative analysis applied to tunneling plugs, France 18 ENVIRONMENTAL PRESERVATION 20 highlights Environmental protection concerns for the deep foundations for the Museum of Primitive Arts in Paris. 20 HSR TAIWAN 25 SPECIAL REPORT 22 HEAVY LIFTING - Power to the point: VSL's Heavy Lifting system enhances quality, compresses construction schedules and saves costs. 22 TECH SHOW 25 HSR TAIWAN: Full span pre-casting for high speed erection 25 An unusual alternative option, the“full span pre-casting” (FSPC) was mooted to build a 340km Rail Link of primarily Viaduct in Taiwan. NEWS, magazine published by VSL International Ltd. • Scheibenstrasse 70 – Bern, Switzerland and VSL-INTRAFOR • Saint-Quentin-en-Yvelines, France. Director of Publication: Jean-Philippe Trin • [email protected] Editor in chief: Jane Rousseau • [email protected] Co-ordinators: Julie Arnoux, Ruth Boss, Anne Perez, Carlos Such, Doris Tong, Brian Callagher. Distribution: Cécile Parmentier • [email protected] Design: Red Line Photos: Y. Chanoît, A. Derek, C. Dumont, V. Paul, B. Strahm, L. Zylberman, other. Copyright: VSL • December 2002 Cover photo: HSRL project, Taiwan BY JEAN-PHILIPPE TRIN EDITORIAL Specialist and The projects that our customers are undertaking nowadays are partner increasingly complex in terms of technical content, scheduling and constraints, both environmental and legal. VSL-Intrafor's engineering capabilities and many years of experience with challenging projects allow its engineers to imagine cost-saving solutions that minimise risks to the environment and cut down the interfaces that customers have to manage. Using its range of specialisations, VSL-Intrafor can offer integrated, full- service "packages" that reduce the number of companies involved in a project and offer greater assurance of meeting deadlines. When large owners such as the KCRC (Rail) in Hong Kong award a contract, they take into account a technical rating as well as a 3 financial one. The principle of selecting the best technical and financial bid requires that specialised companies be involved in the tender preparation phase. This gives VSL-Intrafor the opportunity to demonstrate its technical creativity and draw attention to its references. This approach is becoming very popular in many countries, either through "owner-contractor" partnerships or through a selection process that gives priority to risk management, meeting deadlines and environmental protection. The teams at VSL- Intrafor have a crucial role to play for their customers, and our "Packages" strategy is the key to doing it. FACTS&TRENDS Australia Marked out! > The facilities at Lyell McEwin Hospital in N. W. Adelaide required 16,000 m2 of suspended floor area with 10-m spans. Authorities were reluctant to accept post-tensioning out of fear over potential collisions with tendons in coring future penetrations. VSL offered the client a tendon-marking solution, whereby the tops of slabs are marked with a single continuous line while slab and beam soffits VSL Damping System are stenciled every 5-6 meters. ■ Contact: [email protected] Ready for action as needed > VSL has developed a friction exposed to strong winds, the damper to control stay cable friction force has been adjusted to vibrations on bridges. The VSL activate the damper only when the damper is set up to remain idle for vibration amplitude of the longest small and non-critical vibration cable exceeds 70 mm. amplitudes, thereby reducing both After some two years in operation, 4 wearing and maintenance costs. 30 friction dampers were checked VSL’s friction damper is currently during a maintenance operation of being used on two bridges: the stays; this operation confirmed 120 dampers installed on the stay the effective damper behavior, and cables of the Uddevalla Bridge demonstrated the ease with which (Sweden), and 4 dampers installed components may be dismantled in 2001 on the longest cables of and then reassembled in situ. ■ the Gdansk Bridge (Poland). For Contact: yves.bournand@vsl- the Uddevalla Bridge, which is intrafor.com Earthquake protection Chile Footbridges: Spider on its way > “Spider” is now well on its way stroke can accommodate the large strides to commercial application. VSL has displacement of each story. This taken an active part in the system offers a promising solution > VSL has built a total of development of this project in that no major additional 15 pedestrian bridges in Chile sponsored by EEC, aimed at strengthening is required and during 2000 and 2001 and is retrofitting buildings as an architectural constraints get currently working on another earthquake protection measure. satisfied all at the same time. 23 units in the vicinity of Santiago. The “Spider” method consists of Furthermore, it limits structural Use of the post-tensioning extending energy dissipation limits movement. ■ technique in building such bridges through an innovative system Contact: [email protected] has produced a major impact: based on the serial coupling of technically and for aesthetics. damping devices and prestressed The company's next step will be cables. The damper cable system to improve designs for urban is preloaded and transmits seismic concessionary projects. ■ energy from the building to the Contact: [email protected] damper via a cable. The damper NEWS N°2•2002 Events NOTE PAD The best - The Seonyu Ductal® VSL at fib 2002 footbridge constructed by VSL > The first fib Congress Innovative footbridge in Seoul- Korea was awarded by the "Concrete Structures in the 21st Seonyu Footbridge (Mouloud Korea Concrete Institute as “the Century" took place in Osaka, Behloul), Controlling vibration of best concrete structure”. Japan, in October 2002. Approx. stay cable, Enhancing the curability New tech award - VSL in Chile 80 exhibitors and 2000 visitors of stay cable (Yves Bournand), have been awarded the attended the event. VSL Enhancing the durability of post- "Technologic Development International held a booth tensioned structures by improving Award" by the Chilean Institute displaying the SSI 2000 stay cable the quality of grouting (Hans-Rudolf for Cement and Concrete. This system and CS 2000 anchorage, Ganz, Stéphanie Wildaert), Recent prize highlights features in high and presented several papers at developments in the protection of excellence cement or concrete the conferences: Design and prestressing steels (Hans-Rudolf activities. construction of precast concrete Ganz). Three awards attributed for Gallery job - At one of the segmental viaducts on KCRC West "Outstanding concrete structures" terminal platforms in Paris's Rail Project, Hong Kong (Neil went to projects to which VSL Roissy Airport, a site where Thorburn), Electrical isolation as contributed: Bras de la Plaine Intrafor has been working enhanced protection for post- Bridge in the Reunion Island, extensively over the past five tensioning tendons in concrete Vlatava River metro Tunnel in years, the company has now structures (Adrian Gnaegi, Juan Prague, and the TGV viaducts in been commissioned to build the Ayats), Fire resistance of Ductal® Avignon, France. ■ Contact: diaphragm walls for the 240-m ultra high performance concrete, [email protected] long future baggage-conveyance gallery at module 2E. 5 Australia Improved version of AMS – VSL's Automatic Monostrand Stressing System accurately A few years in hospitals? stresses each individual strand to the specified load and records the data. The lift-off mode now permits to execute automatic lift-off of individual strands of a stay cable to detect and record the actual strand force. Enhanced reinforcement cages - Development of the CADA software through a joint project between the Paris and Hong Kong foundation design offices now enables the computation and automatic generation of the drawings for diaphragm wall reinforcement cages on the basis of force computation results. ISO9001-2000 - VSL's manufacturing plant in Hefei, China had its quality management system certification renewed and > In Victoria, Australia, both the these projects and has already won upgraded to the ISO9001-2000, private and public sectors will be two: Epworth Hospital Centre including the recent bearings spending hundreds of millions of Redevelopment in Richmond, and and joints activity. Such a dollars in building new hospitals Stage 1 of the Austin & Repatriation distinction represents a first for and health facilities over the coming Medical Centre Redevelopment. ■ any VSL company. years. VSL in Australia is targeting Contact: [email protected] NEWS N°2•2002 COVER STORY Comprehensive services & packages High skills packed togeth The packages — or over 10 years now, VSL the construction of very tall buildings has been offering customers or the pylons of suspension or cable- combined service F comprehensive solutions, or stayed bridges, will be a determining “packages”, structured
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