DYNAMIC RESPONSE ANALYSIS OF NEAR-FAULT EFFECTS OF RIGID-FRAMED BRIDGES BASED ON SHAKING TABLE TESTS

YAN Xiaoyu; ZHAO Zhuo; WANG Zhuo

doi:10.13204/j.gyjzG20070717

Volume 51 Issue 1

Apr. 2021

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YAN Xiaoyu, ZHAO Zhuo, WANG Zhuo. DYNAMIC RESPONSE ANALYSIS OF NEAR-FAULT EFFECTS OF RIGID-FRAMED BRIDGES BASED ON SHAKING TABLE TESTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(1): 81-85. doi: 10.13204/j.gyjzG20070717

Citation:

YAN Xiaoyu, ZHAO Zhuo, WANG Zhuo. DYNAMIC RESPONSE ANALYSIS OF NEAR-FAULT EFFECTS OF RIGID-FRAMED BRIDGES BASED ON SHAKING TABLE TESTS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(1): 81-85. doi: 10.13204/j.gyjzG20070717

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DYNAMIC RESPONSE ANALYSIS OF NEAR-FAULT EFFECTS OF RIGID-FRAMED BRIDGES BASED ON SHAKING TABLE TESTS

doi: 10.13204/j.gyjzG20070717

1. School of Engineering, the Open University of China, Beijing 100039, China;
2. Key Laboratory of Coast Civil Structure Safety of China Ministry of Education, Tianjin University, Tianjin 300072, China;
3. Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China

Received Date: 2020-07-07
Available Online: 2021-04-30

Abstract

Abstract

A shaking tables test considering multi-support excitation was conducted on the 1∶10 scale three-span rigid-framed bridge. Taking the results of the test as a base, the finite element model of the bridge was established. Ten typical near-fault ground motions were selected for analysis. Then, the comparative analysis of the dynamic responses between the far-field ground motions and near-fault ground motions was completed. The research showed that the spatial effect of ground motion was unfavorable to the deformation and stress of piers, and its influence was closely related to the constraint forms of piers and girders and the wave velocity. Compared with the far-field ground motion, the a_PGV/a_PGA of the near-fault ground motion was larger. Considering the near-fault effect, the deformation and stress of the piers increased, and the mid-span bending moment and horizontal displacement of the main girders also increased. Therefore, near-fault effect and ground motion spatial effect should be considered in seismic design to make the analysis results more accurate.
- rigid-framed bridge,
- multi-support excitation,
- shaking table test,
- dynamic response,
- near-fault ground motion

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References(13)

References

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