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Safety Analyses of Vehicle Travelling on High-speed Railway Bridge Excited by Pulse-like Near-fault and Non-pulse Ground Motions

 Safety Analyses of Vehicle Travelling on High-speed Railway Bridge Excited by Pulse-like Near-fault and Non-pulse Ground Motions
Author(s): , ,
Presented at IABSE Conference: Bridges and Structures Sustainability - Seeking Intelligent Solutions, Guangzhou, China, 8-11 May 2016, published in , pp. 168-172
DOI: 10.2749/222137816819258375
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The time-varying three-dimensional dynamics model of high-speed-track-bridge-pier system is established under the combined effect of vertical and horizontal near-fault ground motions in this paper....
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Bibliographic Details

Author(s):


Medium: conference paper
Language(s): English
Conference: IABSE Conference: Bridges and Structures Sustainability - Seeking Intelligent Solutions, Guangzhou, China, 8-11 May 2016
Published in:
Page(s): 168-172 Total no. of pages: 5
Page(s): 168-172
Total no. of pages: 5
Year: 2016
DOI: 10.2749/222137816819258375
Abstract:

The time-varying three-dimensional dynamics model of high-speed-track-bridge-pier system is established under the combined effect of vertical and horizontal near-fault ground motions in this paper. The dynamic model of vehicle with 38 DOFs is adopted; the spatial beam element is utilized for simulating box girders and piers, the wheel-rail contact model is presented. A MATLAB code “Train-Track-Bridge Dynamic Analysis” (TTBDA) is developed to compute the seismic responses of bridge and train running safety indexes. A case study analysis of a sixteen car vehicle passing over a super-large bridge at various speeds is carried out. The results indicate that the near-fault pulse-like ground motions can significantly increase the running safety response demand as compared with the non-pulse earthquakes.

Keywords:
railway bridge operation safety high-speed vehicle pulse-like near-fault earthquakes