• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 27 Issue 5
Oct.  2014
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Article Contents
ZHENG Shixiong, ZHANG Jin, JIA Hongyu, ZHANG Keyue, KANG Rui. Stochastic Seismic Response Analysis of Large-Span Cable-Stayed Bridge Subjected to Multi-dimensional and Multi-support Excitations[J]. Journal of Southwest Jiaotong University, 2014, 27(5): 747-753. doi: 10.3969/j.issn.0258-2724.2014.05.001
Citation: ZHENG Shixiong, ZHANG Jin, JIA Hongyu, ZHANG Keyue, KANG Rui. Stochastic Seismic Response Analysis of Large-Span Cable-Stayed Bridge Subjected to Multi-dimensional and Multi-support Excitations[J]. Journal of Southwest Jiaotong University, 2014, 27(5): 747-753. doi: 10.3969/j.issn.0258-2724.2014.05.001

Stochastic Seismic Response Analysis of Large-Span Cable-Stayed Bridge Subjected to Multi-dimensional and Multi-support Excitations

doi: 10.3969/j.issn.0258-2724.2014.05.001
  • Received Date: 10 Dec 2012
  • Publish Date: 25 Oct 2014
  • In order to investigate the stationary random response of large-span cable-stayed bridge under seismic excitations, a large-span cable-stayed bridge was employed for numerical simulation, and a three-dimensional finite element model in ANSYS software was used to study the response of large-span cable-stayed bridge subjected to multi-dimensional and multi-support seismic excitations (MDMSSE). The spatial variations of earthquake action including traveling wave effect (TWE), coherent effect (CE), and local site effect (LSE) were taken into account to analyze their effect on displacement and internal force responses of the main beam and the main tower. Results show that the structural seismic response increased remarkably under MDMSSE in comparison with uniform excitation: the main beam longitudinal displacement increased about 2.3 times; the top longitudinal displacement and bottom traverse moment of main tower ① increased about 2.2 and 2.3 times, respectively. Therefore, only considering uniform excitation is unsafe to a large-span cable-stayed bridge. In addition, the structural response will reduce when considering TWE and CE influence, and hence can be ignored. A soft site has a great influence on structural seismic response.

     

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