[1]SHI Yan,WANG Wenxian,ZHAO Haomiao,et al.Seismic Response Characteristics and Parameter Analysis of the Multi-span Simply Supported Girder Bridge across Strike-slip Faults[J].Journal of Seismological Research,2024,47(03):461-473.[doi:10.20015/j.cnki.ISSN1000-0666.2024.0048
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Seismic Response Characteristics and Parameter Analysis of the Multi-span Simply Supported Girder Bridge across Strike-slip Faults
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
47
Number of periods:
2024 03
Page number:
461-473
Column:
综述
Public date:
2024-05-01
- Title:
- Seismic Response Characteristics and Parameter Analysis of the Multi-span Simply Supported Girder Bridge across Strike-slip Faults
- Keywords:
- across-fault ground motions; multi-span simply supported girder bridge; seismic response; seismic damage; parameter analysis
- CLC:
- U448.21
- DOI:
- 10.20015/j.cnki.ISSN1000-0666.2024.0048
- Abstract:
- To investigate the seismic response of the multi-span simply supported girder bridge across the strike-slip fault,a 3-dimensional dynamic elastic-plastic analysis model is established for a 4-span simply supported girder bridge by using OpenSees.Forty sets of bidirectional ground motions across the fault are synthesized by the decomposition-incorporation method.These ground motions are then input into the model through multi-support excitation.A dynamic nonlinear time history analysis is carried out to investigate the seismic response of the multi-span simply supported girder bridge under the action of the ground motions across the strike-slip fault.In addition,the effects of the crossing angle and the crossing position of the multi-span simply supported girder bridge across a strike-slip fault on the bridge are analyzed.The results show that the bridge under the action of the ground motions across a strike-slip fault will experience a significant displacement response.Both the crossing angle and the crossing position have a significant effect on the seismic response of the bridge.Additionally,the torsion effect of the simply supported girder bridge under the action of the cross-fault ground motions should not be neglected.
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Last Update:
2024-05-01