Earthquakes and Structures

  • 제9권5호
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  • Pages.1029-1044
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  • 2015
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Pounding analysis of RC bridge considering spatial variability of ground motion

  • Han, Qiang (Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing Collaborative Innovation Center for Metropolitan Transportation) ;
  • Dong, Huihui (Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing Collaborative Innovation Center for Metropolitan Transportation) ;
  • Du, Xiuli (Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing Collaborative Innovation Center for Metropolitan Transportation) ;
  • Zhou, Yulong (Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing Collaborative Innovation Center for Metropolitan Transportation)
  • 투고 : 2014.11.24
  • 심사 : 2015.05.08
  • 발행 : 2015.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

To investigate the seismic pounding response of long-span bridges with high-piers under strong ground motions, shaking table tests were performed on a 1/10-scaled bridge model consisting of three continuous spans with rigid frames and one simply-supported span. The seismic pounding responses of this bridge model under different earthquake excitations including the uniform excitation and the traveling wave excitations were experimentally studied. The influence of dampers to the seismic pounding effects at the expansion joints was analyzed through nonlinear dynamic analyses in this research. The seismic pounding effects obtained from numerical analyses of the bridge model are in favorable agreement with the experimental results. Seismic pounding effect of bridge superstructures is dependent on the structural dynamic properties of the adjacent spans and characteristics of ground motions. Moreover, supplemental damping can effectively mitigate pounding effects of the bridge superstructures, and reduce the base shear forces of the bridge piers.

키워드

참고문헌

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피인용 문헌

  1. Contribution of local site-effect on the seismic response of suspension bridges to spatially varying ground motions vol.10, pp.5, 2016, https://doi.org/10.12989/eas.2016.10.5.1233
  2. Effect of pounding on nonlinear seismic response of skewed highway bridges vol.103, 2017, https://doi.org/10.1016/j.soildyn.2017.09.008
  3. Stochastic response of suspension bridges for various spatial variability models vol.22, pp.5, 2016, https://doi.org/10.12989/scs.2016.22.5.1001
  4. Effect of thermal regime on the seismic response of a dry bridge in a permafrost region along the Qinghai-Tibet Railway vol.13, pp.5, 2017, https://doi.org/10.12989/eas.2017.13.5.429