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Seismic Performance Assessment of Multi-Span Continuous Railway Bridges Across a Symmetrical V-Shaped Canyon Considering the Near-Source Topographic Effect

Seismic Performance Assessment of Multi-Span Continuous Railway Bridges Across a Symmetrical V-Shaped Canyon Considering the Near-Source Topographic Effect
Autor(en): , , , ,
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Beitrag für IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022, veröffentlicht in , S. 1396-1403
DOI: 10.2749/nanjing.2022.1396
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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 exp...
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Bibliografische Angaben

Autor(en): (School of Civil Engineering, Southeast University, Nanjing, Jiangsu, P.R. China)
(School of Civil Engineering, Southeast University, Nanjing, Jiangsu, P.R. China)
(School of Civil Engineering, Southeast University, Nanjing, Jiangsu, P.R. China)
(School of Civil Engineering, Southeast University, Nanjing, Jiangsu, P.R. China)
(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu, P.R. China)
(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu, P.R. China)
(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu, P.R. China)
(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu, P.R. China)
Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022
Veröffentlicht in:
Seite(n): 1396-1403 Anzahl der Seiten (im PDF): 8
Seite(n): 1396-1403
Anzahl der Seiten (im PDF): 8
DOI: 10.2749/nanjing.2022.1396
Abstrakt:

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.
Copyright: © 2022 International Association for Bridge and Structural Engineering (IABSE)
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