罕遇地震下大跨悬索桥减隔震措施研究  

Research on Seismic Response Reduction Measures of Long-Span Suspension Bridge under Rare Earthquake

作　　者：陈启泰 吴华金[2] 李健 

机构地区：[1]云南交通咨询有限公司,昆明650031 [2]云南省交通运输厅,昆明650031

出　　处：《昆明理工大学学报（自然科学版）》2013年第4期27-31,共5页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：云南山区公路工程技术项目(tst538121b)

摘　　要：以某高速公路普立大跨悬索桥为工程背景,建立其非线性边界空间动力有限元模型.通过设置液压阻尼器和铅芯橡胶支座,对其进行罕遇地震作用下的非线性动力时程分析.结果表明,两种减隔震措施都能有效减小地震作用下结构的位移和内力,为同类桥梁的减隔震设计提供了参考依据.Taking a long-span suspension bridge called PuLl Bridge in a highway as an example, this paper es-tablishes a Nonlinear boundary and spatial dynamic finite element model. Dynamic nonlinear time - history anal-ysis of the bridge under rare earthquake is then done by setting hydraulic damper and lead rubber bearings. The results of analysis indicate that both seismic response reduction measures can effectively reduce the displacements and internal forces of structure under earthquake, which provides a basis for seismic reduction and isolation de-sign of other similar bridges.

关 键 词：大跨悬索桥 罕遇地震 非线性时程 减隔震措施 

分 类 号：U211.9[交通运输工程—道路与铁道工程] U448.25[建筑科学—桥梁与隧道工程]