应用振动功率流分析支座对桥梁抗震性能的影响

Vibrational Power Flow Analysis on Earthquake Resistant Behavior of the Viaduct System Influenced by Bearing

本文选用北京城市轨道交通某高架桥结构,研究了系统振动功率流的传递,分析了板式橡胶支座参数变化对结构整体抗震性能的影响。理论分析和仿真计算表明,板式橡胶支座的加入增加了结构的整体性,使得连续梁各桥墩分担总的振动功率流,从而改善了结构整体抗震性能。

Basing on a viaduct of Beijing urban rail transit, the transmission of the vibarional power flow are investigated. The regulations of earthquake resistant behavior of the structure system influenced by the varieties parameter of slab-type rubber pad bearing are discussed. The theoretic analysis and simulating results show that the rubber bearing can enhance the integrity of the viaduct structure. The vibrational power flows transmits to all the piers of the viaduct and improve the earthquake resistant behavior of the whole structure system.