DOCSLIB.ORG

Segmental Concrete Bridges a Major 21St Century Alternative by Clifford L

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Segmental Concrete Bridges a Major 21St Century Alternative by Clifford L construction issues Segmental Concrete Bridges A Major 21st Century Alternative By Clifford L. Freyermuth Segmental concrete bridge construction range up to nearly 300 feet in height, and the to accommodate spans ranging from 95 feet began with the use of cast-in-place cantilever bridge deck is 880 feet above the Colorado to 205 feet, and horizontal curve radii as short technology for the Lahn Bridge at Balduin- River. The Hoover Dam Bypass Bridge is as 212 feet. Roadway widths varied from 22 stein in Germany in 1950-1951. Glued match scheduled for completion in June 2008. feet to 96 feet. For this project, the segmental — cast joints for precast segmental construc- These bridges clearly refl ect the use of low bid was $79.3 million, saving the Massa- tion were fi rst used for the Choisy Le Roy segmental concrete bridge technology for chusetts Turnpike Authority in excess of $27 Bridge in France in 1962. structures that would have been built with million over the lowest steel alternate bid. In the U.S., precast segmental construction structural steel in the U.S. 30 years ago. Seven Segmental concrete bridges have also com- was fi rst used for the John F. Kennedy factors have contributed to growth in the use peted successfully on smaller projects against Memorial Causeway in Corpus Christi, Texas of segmental technology for major bridge alternates with prestressed concrete© beams or in 1972. In 1974, the Pine Valley BridgeCopyright projects in the U.S. and around the world: bulb tees. In 1997, the approximately $20 cast-in-place balanced cantilever bridge was 1. Competitive initial cost. million bid for the segmental alternate for constructed in California. 2. Low maintenance costs. the Sailboat Bridge in Oklahoma was $1.1 From these beginnings, both precast and 3. Speed of construction. million lower than the lowest bid for a bulb cast-in-place segmental concrete bridge con- 4. Safety under extreme events. tee superstructure. The Sailboat Bridge fea- struction have grown to become a major 5. Industrialization of the con- tured twin precast concrete segmental bridg- component of the bridge construction in- struction process. es with spans of about 122 feet and a total dustry in nearly all parts of the world. Two 6. Innovations in construction equipment. length of 3,044 feet. The roadway width of current projects which refl ect this growth in 7. Aesthetic appeal. each bridge is 41 feet 3 inches. The bridges the U.S. are the San Francisco-Oakland East feature an as-cast riding surface with epoxy Bay Skyway Bridge (Skyway Bridge) (Figures joints between segments. 1 and 2), and the Hoover Dam Bypass Bridge (Figure 3). At $1.047 billion, the contract Low Maintenance Costs for the Skyway Bridge was the fi rst Caltrans Possibly one of the best measures of dur- project that cost in excess of 1 billion dollars. ability and related maintenance cost is the The contract includes the construction of National Bridge Inventory data, which is twin 85.3 feet wide precast segmental bridges based on bridge inspection reports by per- across Oakland Bay for a total length of sonnel from State Departments of Trans- 13,776 feet. Typical span lengths are 525 feet, portation compiled by the Federal Highway and segmentSTRUCTURE weight ranges from 500 to 800 Administration (FHWA). A 1997 article tons. The use of these very heavy segments by FHWA engineers indicated that about was possible due to water transportation from 110,000 of the 470,000 bridges on the the casting yard in Stockton, California. Figure 2: Segment Erection, San Francisco-Oakland magazineFederal Highway System were structurally Bids were received on the Hoover Dam East Bay Skyway Bridge Construction. Photo courtesy defi cient. While steel bridges represent about Bypass Bridge on September 16th, 2004 with of Kiewit/Flatiron/Manson, A Joint Venture. 40 percent of the overall bridge total, they a low bid of $114,000,000.00. At 1,090 feet, Competitive Initial Cost include about 60 percent of the structural- the segmental concrete arch span will be the The record of the past thirty years clearly ly defi cient bridges. The number of bridges fourth largest concrete arch in the world when indicates that segmental concrete bridges have with structural defi ciencies associated with completed. The precast segmental columns often been selected as a result of competitive various materials and various bridge ele- bids against alternatives using other materials ments is shown in Figure 5. (The S/A term and methods. This is not to imply that seg- mental concrete bridges are always the most economical alternative. However, the suc- cess rate of segmental bridges in competitive bids has been suffi cient to establish the basic economy of segmental construction. In this context, many segmental bridges were selected through alternative bids for the Boston Cen- tral Artery Project, although major bridges in the northeast U.S. have traditionally utilized steel as a construction material. One exam- ple is the I-93 Viaducts and Ramps shown in Figure 1: San Francisco-Oakland East Bay Skyway Figure 4. This project includes 520,000 square Bridge Construction. Photo courtesy of Kiewit/ Figure 3: Hoover Dam Bypass Bridge. Drawing Flatiron/Manson, A Joint Venture. feet of bridge deck. The erection methods had courtesy of T.Y. Lin International. STRUCTURE magazine • October 2005 25 rapid construction speed with respect to pos- sible alternatives for the same site constraints. The Victory Bridge over the Raritan River in New Jersey provides a current example of speed of construction for precast segmental bridges (Figure 6). The Victory Bridge incor- porates twin southbound and northbound bridges, each 3,971 feet in total length. The southbound bridge was opened to traffi c just 15 months after the Contractor received Figure 4: Boston Central Artery/Tunnel, I-93 notice to proceed. After demolition of the ex- Viaducts and Ramps. Photo courtesy of Figg isting bridge with a swing span that opened an Engineering Group. average of 1,100 times a year, the northbound bridge was erected in just nine months. The in Figure 5 refers to structural adequacy.) new bridge features a United States record for Defi cient bridges in the S/A category have a the 440 foot fully match cast precast concrete very low load rating. Only 3 percent of the segmental main span. The bridge also incor- 110,000 structurally defi cient bridges (about porates precast piers as tall as 100 feet that 3,300 bridges) utilized prestressed concrete, were erected in a single day, and the use of an © and there are no known structurally defi cientCopyright integral concrete wearing surface cast with the segmental bridges. Although most segmental segments. Main span pier segments are 21 feet bridges are less than 30 years old, the National deep and weigh 128 tons. By casting them in Bridge Inventory data indicates that bridges halves, the same erection equipment could be built by other materials and methods do ex- used for both pier and typical segments. Erec- Figure 6: Victory Bridge, New Jersey. hibit structural defi ciency at earlier ages. tion of two 3971 foot long bridges over water Photo courtesy of Figg Engineering Group. Due to longitudinal and transverse pre- with pier heights ranging to 100 feet, and a stressing, segmental concrete bridge decks are main span of 440 feet, in a total of 24 months virtually crack-free, which provides greatly of external and internal tendons, is used. refl ects the construction speed possibilities of enhanced durability in aggressive environ- However, this research does indicate that use ments. Additional corrosion protection in precast segmental bridges. of all external tendons provides somewhat areas where deicer chemicals are used can be more ductility than results with use of internal economically provided by an additional inch Safety under Extreme Events tendons. Further, since external tendons or inch and a half of concrete cover over top Research at the University of California, San remain elastic (stressed below the yield point) slab reinforcement placed at the time the seg- Diego, undertaken in reference to design of in an earthquake, there would be very little ments are cast. The use of integral overlays the San Francisco-Oakland East Bay Bridge residual defl ection following a seismic event, also eliminates the delamination problems (Figure 10) has confi rmed that the strength and and the damage to the superstructure that have sometimes occurred with bonded ductility of segmental superstructures, and would be signifi cantly less than would result concreteSTRUCTURE overlays. monolithic superstructure-pier connections, when internal tendons were used. In the greatly exceeds the demand of the design superstructure-pier seismic test depicted in Speed of Construction earthquake. This result applies regardless of Figure 7, cracking was confi ned to the pier, Construction speed varies for different types whether external (within the cell of the box and the superstructure remained uncracked. of segmental bridges,magazine but in most cases all girder) or internal (within the concrete cross This result refl ects the strong beam, weak types of segmental construction offer relatively section) post-tensioning tendons, or a mixture column seismic design philosophy. 4HOUSANDS .UMBEROF"RIDGESWITHITEMCODEDBAD $ECK 3UPER 3UBST 3! 77! 3TEEL #ONCRETE 4IMBER 03#ONC Figure 5: FHWA Data on Structurally Defi cient Bridges on the Figure 7: Segmental Superstructure-Pier Seismic Test at the Federal Highway System - 1997 University of California, San Diego, 2004 26 STRUCTURE magazine • October 2005 tural damage. Winds and storm surges asso- Industrialization of the ciated with Hurricane Ivan did infl ict signifi - Construction Process cant damage on bridges utilizing other types of construction. The Interstate 10 bridge in The inherent economy of segmental concrete Pensacola is now being replaced.
Load more

Recommended publications
  • An Overview of Precast Prestressed Segmental Bridges
    An Overview of Precast Prestressed ♦ Segmental Bridges Walter Podolny, Jr. Bridge Division Office of Engineering Federal Highway Administration U.S. Department of Transportation Washington, D.C. he seventies will be recorded by Construction in this manner may T engineering historians as the de- also have a serious impact upon envi- cade in which prestressed concrete ronment and ecology. Prestressed segmental bridge construction came of segmental construction has extended age in North America. Segmental box the practical span of concrete bridges girder bridges have attracted the at- to approximately 800 ft (244 m). tention and captured the imagination Where segmental construction is used of bridge engineers and designers in conjunction with the cable-stay across the continent. bridge concept, the span range can be Because of practical limitations of extended to 1300 ft (400 m) and handling and shipping, the precast perhaps longer.' prestressed I-girder type of bridge Because construction of the super- construction is limited to an approxi- structure is executed from above, i.e., mate range of 120 to 150-ft (37 to 46 at deck level, the use of extensive m) spans. Beyond this range of span, falsework is avoided. Thus, there is no post-tensioned cast-in-place box gir- effect upon navigation clearance from ders on falsework are more attractive. falsework during construction and the However, in certain instances the ex- cost of extensive formwork is elimi- tensive use of falsework can prove to nated. Segmental viaduct type bridges be an economic disadvantage. Where provide a method whereby the impact deep ravines or navigable waterways of highway construction through en- must be crossed, extensive formwork vironmentally sensitive areas can be may be impractical.
    [Show full text]
  • Bridge Engineering Handbook Superstructure Design Segmental
    This article was downloaded by: 10.3.98.104 On: 02 Oct 2021 Access details: subscription number Publisher: CRC Press Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: 5 Howick Place, London SW1P 1WG, UK Bridge Engineering Handbook Superstructure Design Wai-Fah Chen, Lian Duan Segmental Concrete Bridges Publication details https://www.routledgehandbooks.com/doi/10.1201/b16523-4 Wai-Fah Chen, Lian Duan Published online on: 24 Jan 2014 How to cite :- Wai-Fah Chen, Lian Duan. 24 Jan 2014, Segmental Concrete Bridges from: Bridge Engineering Handbook, Superstructure Design CRC Press Accessed on: 02 Oct 2021 https://www.routledgehandbooks.com/doi/10.1201/b16523-4 PLEASE SCROLL DOWN FOR DOCUMENT Full terms and conditions of use: https://www.routledgehandbooks.com/legal-notices/terms This Document PDF may be used for research, teaching and private study purposes. Any substantial or systematic reproductions, re-distribution, re-selling, loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The publisher shall not be liable for an loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material. 3 Segmental Concrete Bridges 3.1 Introduction ........................................................................................91
    [Show full text]
  • Ten Years of Segmental Achievements and Projections for ~He Next Century
    Ten Years of Segmental Achievements and Projections for ~he Next Century The last 10 years have seen dramatic growth in the construction of segmental concrete bridges in North America, which is estimated to have an annual construction volume exceeding one billion dollars. The bridges have been built using both precast and cast-in-place concrete segmen..ts. Many of these projects have won national and regional awards ~ · · fhis article presents summaries of the major structural features of some of the most outstanding segmental bridges constructed in North America during the last 10 years. Clifford l. Freyermuth Details concerning the design and method of construction of each Manager project are discussed. Finally, the future prospects and potential for American Segmental Bridge Institute segmental bridge construction in the next century are addressed. Phoenix, Arizona Clifford L. Freyermuth is president rom Bangkok to Boston, the past It is estimated that since 1980, the of Clifford L. Freyermuth, Inc. , 10 years have witnessed the cost of segmental construction (pre­ which was formed in 1988 to Femergence of segmental con­ cast and cast-in-place) completed in provide structural consu lting crete bridge construction as the North America is about $5 billion. services for post-tensioned, method of choice for major transporta­ prestressed concrete buildings and Today, the annual construction vol­ bridges. The firm has provided tion projects. In the United States, this ume of this industry is around $1 bil­ management and technical serv ices result has primarily been achieved due lion and is expected to grow in the to the American Segmental Bridge to the initial cost advantages of seg­ next century.
    [Show full text]
  • ABC Applications in Segmental Bridge Construction
    FIGG Accelerated With Bridge Concrete Segmental Construction Bridges William R. (Randy) Cox, P.E. American Segmental Bridge Institute Outline • Introduction • Precast Segmental Bridges ˗ Balanced Cantilever ˗ Span-by-Span ˗ Substructure • Connections ˗ PTI/ASBI Grouted Post-Tensioning Specification • Conclusions Introduction ADVANTAGES OF CONCRETE SEGMENTAL BRIDGES • Redundancy • Overload Capacity • Insensitive to Fatigue • Fire Resistance • Deflection Control • Durability McNary Bergeron Precast Balanced Cantilever Construction Four Bears Bridge Opened September 2005 Ft. Berthold Indian Reservation, 4,500’ Bridge FIGG North Dakota 482 superstructure segments Casting yard near one end of the bridge Indoor casting facility Superstructure Precasting FIGG Prefabricated reinforcing cage Casting Operations placed in segment form FIGG Concrete placement using Casting Operations overhead crane and bucket FIGG Casting Operations Segment move to storage FIGG Segment Transport FIGG Segment Delivery FIGG Pier Table Erection FIGG Typical Segment Erection FIGG Typical Closure Joint FIGG Typical Erection of 4 to 6 segments per day (40’ - 60’) Four Bears Bridge: 10 Segments (100’) erected in 1 day maximum Entire 316’ span in 9 days Construction Rate FIGG Four Bears Bridge Ft. Berthold Indian Reservation, FIGG North Dakota Balanced Cantilever Erection Segments Can Be Erected using: • Barge-mounted cranes • Ground based cranes • Beam and Winch on cantilever end • Overhead Gantry FIGG New I-35W Bridge Opened in Sept 2008 Minneapolis, Minnesota 1,214’ long, 504’ Mainspan FIGG Superstructure Long Line Precasting Method FIGG 1 New I-35W Bridge 120 segments placed in 47 days NTP to close of main span Minneapolis, Minnesota was 9 months FIGG Victory Bridge over Raritan River Opened in 2005 Sayreville, New Jersey Twin 3,971’ Bridges FIGG Rt.
    [Show full text]
  • E Mail: [email protected]
    MIDAS Provides the best solutions in Midas Civil Structural, Geotechnical, and Mechanical Engineering Lucas Park(CAE Consultant) E mail: [email protected] MIDAS Information Technology Co., Ltd. MIDAS Information Technology Co., Ltd. www.MidasUser.com1 MIDAS Provides the best solutions in Structural, Geotechnical, and Mechanical Engineering Segmental Bridge Analysis & Design - Modeling through Wizards May.03 - Generation of numerous tendon profiles / Tapered Section / Construction Stage Sequence - Precise Analysis(Time dependent Material/Tendon Loss) High Speed Rail Road - Rail Track Analysis Model Wizard May.04 1. Automatic Modeling for a simplified separate analysis 2. Automatic Modeling for a stage analysis 3. Automatic Modeling for a moving load analysis Steel Composite Bridge Analysis & Design - Different Modeling Methods May.09 - Modifying a model from Wizard - Analysis / Design Cable Stayed Bridge Analysis - Modeling through Wizard/Modification May.11 - Auto-adjusting Cable Pretension forces - Construction Stages Suspension Bridge Analysis - Modeling through Wizard/Modification May.12 - Auto calculation of tensions in main Cables and Coordinates - Steel column design of irregular sections 2 MIDAS Information Technology Co., Ltd. www.MidasUser.com About MIDAS Company Size Established 540Engineers 1989 MIDAS Provides the best solutions in Midas Civil Structural, Geotechnical, and Mechanical Engineering World wide existence Russia Lithuania (Moscow) UK Shenyang (London) Slovenia Greece China (Beijing) Korea USA Spain (Seoul) (New
    [Show full text]
  • Segmental Bridge Construction in Florida — a Review and Perspective
    Special Report Segmental Bridge Construction in Florida — A Review and Perspective by Alan J. Moreton, P.E. State Structures Engineer Florida Department of Transportation Tallahassee, Florida 36 SYNOPSIS This paper offers an overview of the precast concrete segmental bridges designed and built in the state of Florida during the last ten years. The article summarizes various statistical structural parameters, segment manufacturing and erection methods, construction times, costs, and reviews problems typically encountered. Also included is a discussion of current industry and nationwide design and construction practices and some suggestions for possible improvements. CONTENTS Synopsis............................................37 1. Introduction ......................................38 2. Precast Segmental Bridges ........................38 3. Florida's Segmental Bridges .......................44 4. Structural Parametrics .............................44 5. Casting Yard Operations ...........................48 6. Rejected Segments .............................. 49 7. Erection Operations ...............................50 8. Some Typical Problems ...........................52 9. Time ............................................55 10. Costs ...........................................57 11. Administration Processes — Design, Construction andShop Drawings ...............................60 12. Actions by the Florida Department of Transportation ...63 13. Benefits of Segmental Bridges ......................64 14. Summary ........................................65
    [Show full text]
  • Precast Concrete Segmental Bridges America's Beautiful and Affordable
    HISTORICAL-TECHNICAL SERIES Precast Concrete Segmental Bridges America’s Beautiful and Affordable Icons How did precast concrete segmental construction become a major player in the modern American bridge industry? While the continuing growth in market share for precast, prestressed concrete systems can be attributed to numerous competitive advantages, this article presents an overview of the proliferation of segmental bridges in the United States based primarily on five advantages — economy, construction efficiency, durability, design innovation and aesthetics. Linda Figg President and Director of Bridge Art a bridge type that would be many other countries throughout the FIGG Engineering Group come an increasingly popular world. Typically, the precast, pre Tallahassee, Florida Forand successful competitor over stressed concrete bridge also proves to alternative building systems, precast be the most cost-effective alternative concrete made a rather unpretentious for owners, particularly when life- debut in the United States. Indeed, one cycle costs such as maintenance and wonders if the engineers who de repair are taken into account. signed and built America’s first pre cast concrete segmental box girder EVOLUTION OF bridge in 1973 — the John F. Kennedy PRECAST CONCRETE Memorial Causeway Bridge connect ing Corpus Christi and Padre Island, SEGMENTAL BRIDGES Texas — could have imagined that this The European Experience simple, unadomed structure would be Originating in Europe, this versatile the harbinger of some of the nation’s and economical
    [Show full text]
  • Construction Techniques for Segmental Concrete Bridges
    ••N♦N^j1♦j.•♦j^♦j-.•je♦j-♦•j1♦N♦••♦N•N♦N♦N•N♦NeeeN•N•N•N♦N•N•N♦N•♦ ♦•t Construction Techniques for Segmental Concrete Bridges •2•.i. •i• •e• .i. James M. Barker .i. Associate •Z• H. W. Lochner, Inc. Consulting Engineers Chicago, Illinois ne of the primary advantages of struction or in design in the United O segmental concrete bridge con- States, few have been or will be con- struction is the economics. In a large structed in exactly the same manner. majority of cases, segmental construc- The multitude of choices available to tion has been the winner where alternate contractors allows them to tailor each construction methods have been avail- project to their manpower and equip- able to contractors at the time of bidding. ment in the interest of maximizing effi- There are many reasons for this rela- ciency and optimizing cost. tively new method of bridge construction Segmental bridge construction is also in the United States competing so well in revising the basic thinking of design en- the 10 years since the European transfer gineers. Until recently, designers have technology was started. I believe, how- concerned themselves mainly on how to ever, that the principle reason for the build the project after preparing compu- success of segmental concrete con- tations and plans. Segmental construc- struction is the number of construction tion has revised this thinking. The first techniques available to build these question asked about a project now is bridges. Of approximately 35 to 40 such "What is the best and most economical bridges either completed, under con- way to build this project?" Once this question has been satisfactorily an- swered, the designer can proceed with a NOTE: This article is based on a presentation given design based on the most efficient con- at the Long Span Concrete Bridge Conference in Hartford, Connecticut, March 18-19, 1980.
    [Show full text]
  • Bridge Design Basics
    Outline • BOBS Organization Structure • Bridge Type and Composition/Terminology • Asset Management • Bridge Maintenance • Bridge Design Process • Bridge Plans • Road and Bridge Coordination • Request for Action (RFA) Projects • Design in Construction • Accelerated Bridge Construction (ABC) • Wrap up 1 Bridge Design Basics Bridge Terminology Bridge Types 2 1 Bridge Terminology and Types BRIDGE TERMINOLOGY & TYPES OF BRIDGES COMPONENTS 3 Terminology FHWA A305-4 A bridge is defined in section 650.305 as "A structure including supports erected over a depression or an obstruction, such as water, a highway, or railway, and having a track or passageway for carrying traffic or other moving loads, and having an opening measured along the center of the roadway What is a bridge? of more than 20 feet between under copings of abutments or spring lines of arches, or extreme ends of openings for multiple boxes; it may also include multiple pipes, where the clear distance between openings is less than half of the smaller contiguous opening." 4 2 Bridge Terminology 5 Superstructure Bridge Deck 6 3 Superstructure Section thru sleeper Slab and sliding slab Plan view bridge deck and approaches 7 Superstructure - Barriers Type 4 Barrier Type 5 Barrier 8 4 Superstructure - Barriers Single Slope Barrier Type 6 Barrier 9 Superstructure - Railings Aesthetic Parapet Tube Railing 10 5 Superstructure - Railings 4 Tube Railing 11 Superstructure - Railings 2 Tube Railing 12 6 Superstructure Steel Girders and Welded Plate Girders Beams Rolled Shapes Concrete
    [Show full text]
  • Toll Bridge Seismic Safety Retrofit Report for the Legislature and Governor
    Toll Bridge Seismic Retrofit Program TOLL BRIDGE SEISMIC RETROFIT PROGRAM Purpose The purpose of this report is to inform the Legislature that the Toll Bridge Seismic Retrofit Program (Program) has a budget shortfall and to provide background regarding the increased costs for the San Francisco-Oakland Bay Bridge East Span (East Span) replacement. Increased costs have been driven by several factors and complications, including: time delays related to selection of a signature bridge self-anchored suspension (SAS) span and the construction complexity of the SAS; insufficient initial analyses of costs; and external global cost escalation factors. The engineering design and cost estimates have been developed in consultation with respected outside experts. Bids received on the two major East Span contracts advertised since the passage of AB1171 (Dutra, Chapter 907, Statutes of 2001) have been significantly higher than the estimated costs for these contracts. A funding solution is needed to continue the Program and complete the needed seismic safety projects of the two remaining critical bridges in the Program (Richmond-San Rafael and San Francisco-Oakland Bay Bridges). In addition to funding, timing is an issue for new legislation. The Department of Transportation (Department) recommends that the new legislation be enacted during this session for the following reasons: • The Department received a single bid for the Self-Anchored Suspension Bridge. That bid is set to expire on September 30, 2004. Legislation is needed to supplement the Program budget in order to continue the toll seismic retrofit effort and for the Department to award this bid. The contract cannot be awarded without legislative authority to expend the needed funds.
    [Show full text]
  • Modern Techniques in Bridge Engineering Techniques in Bridge Modern
    Edited by Mahmoud Modern in Bridge Techniques Engineering Due to signifi cant economic growth in the last few decades, increasing traffi c loads impose tremendous demand on bridge structures. This coupled with ongoing deterioration of bridges; introduce a unique challenge to bridge engineers in maintaining service of these infrastructure assets without disruption to vital economic and social activities. This requires innovative solutions and optimized methodologies to achieve safe and effi cient operation of bridge structures. Bridge engineering practitioners, researchers, owners, and contractors from all over the world presented on modern techniques in design, inspection, monitoring and rehabilitation of bridge structures, at the Sixth New York City Bridge Conference; held in New York City on July 25-26, 2011. This book contains select number of papers presented at the conference. This group of papers is state-of-the-art in bridge engineering and is of interest to any reader in the fi eld. Modern Techniques in Bridge Engineering Edited by Khaled M. Mahmoud an informa business MODERN TECHNIQUES IN BRIDGE ENGINEERING NY BRIDGE.indb i 6/20/2011 9:06:32 PM This page intentionally left blank Modern Techniques in Bridge Engineering Editor Khaled M. Mahmoud Bridge Technology Consulting (BTC), New York City, USA NY BRIDGE.indb iii 6/20/2011 9:06:33 PM CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2011 by Taylor & Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S. Government works Version Date: 20111129 International Standard Book Number-13: 978-0-203-18189-8 (eBook - PDF) This book contains information obtained from authentic and highly regarded sources.
    [Show full text]
  • Gerald Desmond Bridge Long Beach, California
    THE CONCRETE BRIDGE MAGAZINE SPRING 2019 www.aspirebridge.org Gerald Desmond Bridge Long Beach, California MARYLAND ROUTE 195 (CARROLL AVENUE) BRIDGE OVER SLIGO CREEK Tacoma Park, Maryland NORTHWEST CORRIDOR EXPRESS LANES Marietta, Georgia BROTHERHOOD BRIDGE (MENDENHALL RIVER BRIDGE) Juneau, Alaska Permit No. 567 No. Permit Lebanon Junction, KY Junction, Lebanon SARAH MILDRED LONG BRIDGE Postage Paid Postage Presorted Standard Presorted Portsmouth, New Hampshire, and Kittery, Maine CONTENTS 6 Features Changing Perceptions 6 DYWIDAG-Systems International’s new high-tech inspection and monitoring tools add to its selection of post-tensioning products and services, enhancing its role as a specialty contractor. Carroll Avenue Bridge Over Sligo Creek 12 Northwest Corridor Express Lanes 16 Brotherhood Bridge Over the Mendenhall River 20 Sarah Mildred Long Bridge 24 Photo: DSI. Departments Editorial 2 12 Concrete Calendar 4 Perspective—Quantitative Assessment of Resilience and Sustainability 10 Aesthetics Commentary 27 Concrete Bridge Technology—Observations from 30 Years of Inspecting Post-Tensioned Structures 28 Concrete Bridge Technology—Seismic Behavior of Reinforced-Concrete-Filled Steel Tubes 32 Concrete Bridge Technology—Sarah Mildred Long Bridge Tower Foundation Construction 34 Photo: Johnson, Mirmiran & Thompson. Concrete Bridge Technology—Implementation of an Electrically Isolated Tendon Post-Tensioning System in the United States 36 24 Concrete Bridge Technology—Sweep in Precast, Prestressed Concrete Bridge Girders 38 Safety and Serviceability— Managing Structures Affected by Delayed Ettringite Formation and Alkali-Silica Reaction 42 FHWA—Advancing Bridge Repair and Preservation Using Ultra-High-Performance Concrete 45 State—Alabama 47 LRFD—AASHTO LRFD Bridge Design Specifications: Service IV Load Combination 51 This issue’s Concrete Connections will DSI.
    [Show full text]