Optimization of Cable Pre-Tension Forces in Long-Span Cable-Stayed Bridges Considering the Counterweight
Over the past 20 years, many long-span cable-stayed bridges with asymmetric spans have been constructed, and the counterweight is always used to balance the self-weight of the main span. This paper presents an optimization method to determine the cable pre-tension forces in long-span cable-stayed bridges considering the counterweight. This method includes: finite element (FE) model, formulation of the optimization problem and optimization algorithm. FE model is established considering the geometrical nonlinearity. The optimization problem is formulated with the objective of minimum weighted total bending energy. In addition, the constraints for the cable pre-tension forces, the bending moment of the girder and the tower, the load of the counterweight, the bearing reactions of the transition piers and auxiliary piers are all implemented in the optimization model. The optimization algorithm solves the optimization problem through the variable-step search along each design variable including the cable pre-tension forces, the load and the range of the counterweight. The efficiency and the accuracy of the proposed method are demonstrated by an application example and the results exhibit the importance of considering counterweight in the design of asymmetric cable-stayed bridges.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/01410296
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Supplemental Notes:
- © 2018 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
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Authors:
- Song, Chaolin
- Xiao, Rucheng
- Sun, Bin
- Publication Date: 2018-10-1
Language
- English
Media Info
- Media Type: Web
- Features: Figures; References; Tables;
- Pagination: pp 919-928
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Serial:
- Engineering Structures
- Volume: 172
- Issue Number: 0
- Publisher: Elsevier
- ISSN: 0141-0296
- Serial URL: http://www.sciencedirect.com/science/journal/01410296
Subject/Index Terms
- TRT Terms: Bridge cables; Bridge design; Cable stayed bridges; Finite element method; Pretensioning
- Uncontrolled Terms: Counterweights
- Subject Areas: Bridges and other structures; Design; Highways;
Filing Info
- Accession Number: 01679265
- Record Type: Publication
- Files: TRIS
- Created Date: Aug 27 2018 2:06PM