Seismic Performance Assessment of Multi-Span Continuous Railway Bridges Across a Symmetrical V-Shaped Canyon Considering the Near-Source Topographic Effect
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Bibliographic Details
| Author(s): |
Li Shuai
(School of Civil Engineering, Southeast University, Nanjing, Jiangsu, P.R. China)
Wang Ming-dong (School of Civil Engineering, Southeast University, Nanjing, Jiangsu, P.R. China) Zhang Fan (School of Civil Engineering, Southeast University, Nanjing, Jiangsu, P.R. China) Wang Jing-quan (School of Civil Engineering, Southeast University, Nanjing, Jiangsu, P.R. China) Zhang Yu (Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu, P.R. China) Dai Deng-hui (Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu, P.R. China) Zhang Ning (Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu, P.R. China) Gao Yu-feng (Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu, P.R. China) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 1396-1403 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/nanjing.2022.1396 | ||||
| Abstract: |
Topographic features have remarkable influences on the characteristics of ground motions, which may cause the amplification of input seismic waves. The objective of this study is to numerically explore the near-source topographic effects on the seismic behaviors of an existing railway bridge crossing a symmetrical V-shaped canyon. Numerical results demonstrated that the topographic effects can noticeably amplify the seismic responses of the bridge. Compared to the bridge without crossing a canyon, the peak displacement of the girder and pier in the case of the canyon- crossing bridge increases by 15.2% and 2.9%-14.5%, respectively. The piers at the illuminated side of the canyon experience larger seismic responses compared to the piers at the shaded side of the canyon due to the unequal motion amplitudes at each support. |
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| Keywords: |
seismic response Railway bridges V-shaped canyon topographic amplification
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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