多跨预应力连续梁桥摩擦摆隔震支座研究

以福州市闽侯县某多跨预应力连续梁桥为工程背景,建立空间动力模型,采用非线性时程分析法并自定义隔震率分析采用摩擦摆支座不同布置形式的隔震效果,研究了支座参数、桥墩高度等因素对桥梁隔震效果的影响,得出多跨预应力连续梁桥隔震设计参数的选取原则,可为同类型桥梁的隔震措施设计提供参考.

Research of friction pendulum system for multi-span prestressed continuous bridge

Taking a multi-span prestressed continuous bridge at Fuzhou as the engineering background, this paper set up a spacial dynamic model by the finite element software. The nonlinear time history method and ratio of isolation defined are used to study on how the arrangement form of friction pendulum bearings influenced isolating affection. The authors analyzed how the bearing parameters and pier heigh influence isolating affection, and the basic principles of how to select isolator parameters was deduced. It can give reference for isolation design of the same type bridge in the future.