Fundamentals For The Dimensioning And Optimization Of Prestressed Segmented Girders For Application In Bridge Crane Systems
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Fundamentals For The Dimensioning And Optimization Of Prestressed Segmented Girders For Application In Bridge Crane Systems
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Author : Oellerich, Jan
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-10-31
Fundamentals For The Dimensioning And Optimization Of Prestressed Segmented Girders For Application In Bridge Crane Systems written by Oellerich, Jan and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-10-31 with Technology & Engineering categories.
Bridge cranes are widely used as discontinuous material handling systems in industrial environments. The so-called crane bridge plays a central role in the overall construction. With increasing span widths and load capacities, the dimensions of the crane bridge also increase. The core of this work is the design and optimization of a new type of bridge crane system, which consists of individual segments and is eccentrically pretensioned by a tensile member.
Prestress Losses In Pretensioned High Strength Concrete Bridge Girders
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Author : Maher K. Tadros
language : en
Publisher: Transportation Research Board
Release Date : 2003
Prestress Losses In Pretensioned High Strength Concrete Bridge Girders written by Maher K. Tadros and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Technology & Engineering categories.
"The HCM includes three printed volumes (Volumes 1-3) that can be purchased from the Transportation Research Board in print and electronic formats. Volume 4 is a free online resource that supports the rest of the manual. It includes: Supplemental chapters 25-38, providing additional details of the methodologies described in the Volume 1-3 chapters, example problems, and other resources; A technical reference library providing access to a significant portion of the research supporting HCM methods; Two applications guides demonstrating how the HCM can be applied to planning-level analysis and a variety of traffic operations applications; Interpretations, updates, and errata for the HCM (as they are developed);A discussion forum allowing HCM users to ask questions and collaborate on HCM-related matters; and Notifications of chapter updates, active discussions, and more via an optional e-mail notification feature."--Publisher.
Design Of Concrete Bridge Beams Prestressed With Cfrp Systems
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Author : Abdeldjelil Belarbi
language : en
Publisher:
Release Date : 2019
Design Of Concrete Bridge Beams Prestressed With Cfrp Systems written by Abdeldjelil Belarbi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Building materials categories.
This report proposes guidelines and presents research findings that are expected to advance and facilitate the use of CFRP systems in bridge applications. In addition, five design examples that illustrate the step-by-step use of the proposed guide specifications are provided. Carbon fiber reinforced polymer (CFRP) is becoming a recognized alternative to traditional construction materials in a wide range of civil engineering applications. An example of such applications is the use of CFRP cables or bars as prestressing tendons for concrete bridge girders, especially in aggressive environments where steel prestressing strands are susceptible to corrosion. Despite their promise, CFRP prestressing tendons have not frequently been used for bridge construction in the United States; their use has been hampered by the lack of recognized design specifications.
Optimization Of Prestressed Concrete Segmental Bridges
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Author : Aldo F. Colandrea
language : en
Publisher:
Release Date : 1981
Optimization Of Prestressed Concrete Segmental Bridges written by Aldo F. Colandrea and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Concrete bridges categories.
This research has studied the applicability of optimization techniques to the analysis and design of incrementally launched bridges. The ultimate strength and serviceability requirements of applicable bridge codes have been utilized to develop constraint criteria for the mathematical model. Optimization techniques such as geometric, linear, polynomial and dynamic programming have been investigated. A heuristic analysis of a linear programming model was selected since it provided the advantages of low computer costs and simple constraint formulations. The cost of the superstructure materials comprised the objective function. An exhaustive search over the permissible ranges of the assumed variables was considered in order to obtain the global optimum. A computer program was developed for this operation. An existing incrementally launched bridge was modeled and a minimum cost design was found. A cost comparison between the existing and optimal designs was extrapolated. A sensitivity analysis was also performed on the mathematical model of the global optimum and suboptimal conditions.
Continuous Prestressed Concrete Girder Bridges
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Author : Mary Beth Deisz Hueste
language : en
Publisher:
Release Date : 2016
Continuous Prestressed Concrete Girder Bridges written by Mary Beth Deisz Hueste and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Continuous bridges categories.
The Texas Department of Transportation designs typical highway bridge structures as simple span systems using standard precast, pretensioned girders. Spans are limited to about 150 ft due to weight and length restrictions on transporting the precast girder units from the prestressing plant to the bridge site. Such bridge construction, while economical from an initial cost point of view, may become somewhat limiting when longer spans are needed. This project focused on developing additional economical design alternatives for longer span bridges with main spans ranging from 150-300 ft, using continuous precast, prestressed concrete bridge structures with in-span splices. Phase 1 of this study focused on evaluating the current state-of-the-art and practice relevant to continuous precast concrete girder bridges and recommending suitable continuity connections for typical Texas bridge girders; the findings are documented in the Volume 1 project report. This report summarizes Phase 2 of the research including detailed design examples for shored and partially shored construction, results of a parametric design study, and results of an experimental program that tested a full-scale girder containing three splice connections. The parametric design study indicated that for bridges spanning from 150-300 ft, continuous precast, prestressed concrete girder bridges with in-span splices can provide an economical alternative to steel girder bridges and segmental concrete box girder construction. The tested splice connections performed well under service level loads. However, the lack of continuity of the pretensioning through the splice connection region had a significant impact on the behavior at higher loads approaching ultimate conditions. Improved connection behavior at ultimate conditions is expected through enhanced connection details. Recommendations for design of continuous spliced precast girders, along with several detailing suggestions are discussed in the report.
Post Tensioning Manual
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Author : Post-Tensioning Institute
language : en
Publisher:
Release Date : 2023
Post Tensioning Manual written by Post-Tensioning Institute and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with Post-tensioned prestressed concrete construction categories.
Time Dependent Behaviour Of Concrete Structures
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Author : Raymond Ian Gilbert
language : en
Publisher: CRC Press
Release Date : 2010-09-15
Time Dependent Behaviour Of Concrete Structures written by Raymond Ian Gilbert and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-09-15 with Technology & Engineering categories.
Serviceability failures of concrete structures involving excessive cracking or deflection are relatively common, even in structures that comply with code requirements. This is often as a result of a failure to adequately account for the time-dependent deformations of concrete in the design of the structure. The serviceability provisions embodied in codes of practice are relatively crude and, in some situations, unreliable and do not adequately model the in-service behaviour of structures. In particular, they fail to adequately account for the effects of creep and shrinkage of the concrete. Design for serviceability is complicated by the non-linear and inelastic behaviour of concrete at service loads. Providing detailed information, this book helps engineers to rationally predict the time-varying deformation of concrete structures under typical in-service conditions. It gives analytical methods to help anticipate time-dependent cracking, the gradual change in tension stiffening with time, creep induced deformations and the load independent strains caused by shrinkage and temperature changes. The calculation procedures are illustrated with many worked examples. A vital guide for practising engineers and advanced students of structural engineering on the design of concrete structures for serviceability and provides a penetrating insight into the time-dependent behaviour of reinforced and prestressed concrete structures.
Bridge Engineering Handbook
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Author : Wai-Fah Chen
language : en
Publisher: CRC Press
Release Date : 2019-09-11
Bridge Engineering Handbook written by Wai-Fah Chen and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-09-11 with Technology & Engineering categories.
First Published in 1999: The Bridge Engineering Handbook is a unique, comprehensive, and state-of-the-art reference work and resource book covering the major areas of bridge engineering with the theme "bridge to the 21st century."
Prestressed Concrete Bridges
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Author : Christian Menn
language : en
Publisher: Birkhäuser
Release Date : 2012-12-06
Prestressed Concrete Bridges written by Christian Menn and has been published by Birkhäuser this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This book was written to make the material presented in my book, Stahlbetonbrucken, accessible to a larger number of engineers throughout the world. A work in English, the logical choice for this task, had been contemplated as Stahlbetonbrucken was still in its earliest stages of preparation. The early success of Stahlbetonbrucken provided significant impetus for the writing of Prestressed Concrete Bridges, which began soon after the publication of its predecessor. The present work is more than a mere translation of Stahlbetonbrucken. Errors in Stahlbetonbrucken that were detected after publication have been corrected. New material on the relation between cracking in concrete and corrosion of reinforce ment, prestressing with unbonded tendons, skew-girder bridges, and cable-stayed bridges has been added. Most importantly, however, the presentation of the material has been extensively reworked to improve clarity and consistency. Prestressed Concrete Bridges can thus be regarded as a thoroughly new and improved edition of its predecessor.
Bridge Engineering
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Author : W.F. Chen
language : en
Publisher: CRC Press
Release Date : 2003-02-27
Bridge Engineering written by W.F. Chen and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-02-27 with Technology & Engineering categories.
With chapters culled from the acclaimed Bridge Engineering Handbook, Bridge Engineering: Substructure Design focuses on the various components comprising and affecting bridge substructures. These include bearings, piers and columns, towers, abutments and retaining structures, footings and foundations, and bridge hydraulics. For each component, the