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首页> 外文期刊>Advances in civil engineering >Optimal Seismic Intensity Measure Selection for Isolated Bridges under Pulse-Like Ground Motions
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Optimal Seismic Intensity Measure Selection for Isolated Bridges under Pulse-Like Ground Motions

机译：脉冲地面运动下隔离桥梁的最佳地震强度测量选择

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摘要

Isolated bridges are commonly designed in the near-fault region to balance excessive displacement and seismic force. Optimal intensity measures (IMs) of probabilistic seismic demand models for isolated bridges subjected to pulse-like ground motions are identified in this study. Four typical isolated girder bridge types with varied pier height (from 4 m to 20 m) are employed to conduct the nonlinear time history analysis. Totally seven structure-independent IMs are considered and compared. Critical engineering demand parameters (EDPs), namely, pier ductility demands and bearing deformation along the longitudinal and transverse directions, are recorded during the process. In general, PGV tends to be the optimal IM for isolated bridges under pulse-like ground motions based on practicality, efficiency, proficiency, and sufficiency criterions. The results can offer effective guidance for the optimal intensity measure selection of the probabilistic seismic demand models (PSDMs) of isolated bridges under pulse-like ground motions.
机译：孤立的桥梁通常设计在近端故障区域中，以平衡过度的位移和地震力。在本研究中鉴定了经受脉冲样地面运动的突出桥的概率地震需求模型的最佳强度测量（IMS）。使用具有各种码头高度的四个典型的隔离梁桥式（从4米到20米）进行非线性时间历史分析。完全考虑了七个独立的IMS。在该过程期间记录了关键工程需求参数（EDP），即墩延性需求和沿纵向和横向的轴承变形。通常，PGV基于实用性，效率，熟练程度和充足标准，PGV倾向于是脉冲状地面运动下的隔离桥的最佳IM。结果可以为隔离桥梁的概率震荡措施（PSDMS）的最佳强度测量选择提供有效的指导。

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  • 来源
    《Advances in civil engineering》 |2019年第16期|3858457.1-3858457.22|共22页
  • 作者

    Jiang Linwei; Zhong Jian; He Min; Yuan Wancheng;

  • 作者单位

    Hefei Univ Technol Dept Civil Engn Hefei 230009 Peoples R China;

    Hefei Univ Technol Dept Civil Engn Hefei 230009 Peoples R China;

    Hefei Univ Technol Dept Civil Engn Hefei 230009 Peoples R China;

    Tongji Univ State Key Lab Disaster Reduct Civil Engn Shanghai 200092 Peoples R China;

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