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首页> 外文会议>Annual conference of the Canadian Society for Civil Engineering >Seismic fragility assessment of multi span continuous concrete highway bridges in British Columbia
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Seismic fragility assessment of multi span continuous concrete highway bridges in British Columbia

机译：不列颠哥伦比亚省多跨连续混凝土公路桥梁的地震易损性评估

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Recent seismic events all over the world have shown that bridge structures are highly sensitive and vulnerable during earthquakes. Many existing bridges were designed without adequate consideration of seismic risk. The full or partial collapse of even one major bridge in a city or community would have devastating consequences. There has been limited research to date to evaluate the seismic vulnerability of the existing bridges in British Columbia (BC) or support decision making on seismic upgrade. There is, therefore, a need for reliable methods for assessing the seismic vulnerability of existing bridges, in particular large and irregular motorway bridges having lifeline character. This research focuses on developing performance based seismic fragility curves for typical multi span continuous concrete girder (MSCC) bridges in BC. Ground motions compatible with the seismic hazard were used as input excitations for bridge vulnerability assessment. The fragility curves thus developed will quantify the vulnerability of existing MSCC bridges and aid in proper decision making to increase the safety for humans and the serviceability of vital facilities.
机译：世界各地的最近地震事件表明，地震期间桥梁结构高度敏感和脆弱。在不充分考虑地震风险的情况下设计了许多现有的桥梁。甚至一个城市或社区中甚至一个主要桥梁的全部或部分崩溃都会产生破坏性的后果。迄今为止有限的研究迄今为止，评估了不列颠哥伦比亚省（BC）的现有桥梁的地震脆弱性或对地震升级的支持决策。因此，需要可靠的方法来评估现有桥梁的地震脆弱性，特别是具有生命线特征的大型和不规则的高速公路桥。本研究重点研究了BC中典型多跨连续混凝土梁（MSCC）桥的基于性能的地震脆弱曲线。与地震危害兼容的地面运动用作桥梁漏洞评估的输入激励。如此开发的脆弱曲线将量化现有MSCC桥梁的脆弱性，并援助适当的决策，以提高人类的安全性和重要设施的可维护性。

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