Structural Engineering and Mechanics

  • 제69권2호
  • /
  • Pages.177-191
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  • 2019
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

The effect of local topography on the seismic response of a coupled train-bridge system

  • Qiao, Hong (School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture) ;
  • Du, Xianting (School of Civil Engineering, Beijing Jiaotong University) ;
  • Xia, He (School of Civil Engineering, Beijing Jiaotong University) ;
  • De Roeck, Guido (Department of Civil Engineering, KU Leuven) ;
  • Lombaert, Geert (Department of Civil Engineering, KU Leuven) ;
  • Long, Peiheng (School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture)
  • 투고 : 2018.09.27
  • 심사 : 2018.12.19
  • 발행 : 2019.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

The local topography has a significant effect on the characteristics of seismic ground motion. This paper investigates the influence of topographic effects on the seismic response of a train-bridge system. A 3-D finite element model with local absorbing boundary conditions is established for the local site. The time histories of seismic ground motion are converted into equivalent loads on the artificial boundary, to obtain the seismic input at the bridge supports. The analysis of the train-bridge system subjected to multi-support seismic excitations is performed, by applying the displacement time histories of the seismic ground motion to the bridge supports. In a case study considering a bridge with a span of 466 m crossing a valley, the seismic response of the train-bridge system is analyzed. The results show that the local topography and the incident angle of seismic waves have a significant effect on the seismic response of the train-bridge system. Leaving these effects out of consideration may lead to unsafe analysis results.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Central Universities of China

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피인용 문헌

  1. Numerical Algorithm for Dynamic Impedance of Bridge Pile-Group Foundation and Its Validation vol.14, pp.8, 2021, https://doi.org/10.3390/a14080247