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城市桥梁地震碰撞反应研究与发展

, PP. 91-98

Keywords: 城市桥梁,碰撞,地震反应,接触单元,减震

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Abstract:

地震时城市桥梁会因邻跨之间的碰撞而发生灾害.本文从桥梁碰撞的模拟模型、发生条件、影响因素、碰撞对桥梁抗震性能的影响以及防止碰撞的措施等方面,对国内外有关城市桥梁碰撞地震反应研究的成果进行了系统的总结和分析,得出以下结论桥梁碰撞是多因素共同作用所导致的,并使得桥梁的地震反应更加复杂、呈现非线性;要准确评价桥梁地震碰撞反应需要建立更精确的模拟模型;选择合理的邻跨间距和支座宽度以及安装合适的消能减震装置,可有效地减小桥梁的地震碰撞反应.

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