Optimization Design of Large Span Cable-Stayed Bridge in High Seismic Risk Zone

Abstract:

To ensure seismic safety of a large span cable-stayed bridge, two alternative pylon shapes and section types were studied. Nonlinear time history analysis was performed in the context. It is found that the A-shaped pylon is much stiffener than the H-shaped pylon in terms of deformation. The steel A-shaped pylon can significantly reduce the seismic demands of the key member including tower drift and moment. A ductile steel link between towers is proposed for the optimization of design in the paper. The A-shaped reinforced concrete tower with ductile steel link was proved to be a relatively balanced plan considering engineering, aesthetic and economic factors.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 2015-2019
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.2015
• Online since: August 2013
• Authors: Zhi Hua Xiong, Yun Cheng Feng, Song Lin Song, Jiang Bo Wang
• Keywords: Cable-Stayed Bridge, Design, Ductile Steel Link, Pylon, Seismic

References

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