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Earthquakes and Structures
  Volume 16, Number 6, June 2019, pages 665-677
DOI: http://dx.doi.org/10.12989/eas.2019.16.6.665
 


Performance of an isolated simply supported bridge crossing fault rupture: shake table test
Nailiang Xiang, Huaiyu Yang and Jianzhong Li

 
Abstract
    This study utilizes large-scale shake table test to investigate the seismic performance of an isolated bridge with lead rubber bearings crossing an active fault. Two transverse restraining systems with and without shear keys are tested by applying spatially varying ground motions. It is shown that the near-fault span exhibits larger bearing displacement than the crossing-fault span. Bridge piers away from the fault rupture are more vulnerable than those adjacent to the fault rupture by attracting more seismic demand. It is also verified that the shear keys are effective in restraining the bearing displacement on the near-fault span, particularly under the large permanent ground displacement.
 
Key Words
    isolated simply supported bridge; fault rupture; shear keys; seismic performance; shake table testing; spatially varying ground motions
 
Address
Nailiang Xiang: State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, 1239 Siping Rd, Shanghai 200092, China; Department of Civil Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
Huaiyu Yang: China Railway 15 Bureau Group CO, LTD, Shanghai 200070, China
Jianzhong Li: State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, 1239 Siping Rd, Shanghai 200092, China
 

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