铅芯橡胶支座在旧桥抗震加固中的应用  

Application of Lead Rubber Bearing in Seismic Reinforcement of Old Bridge

作　　者：米曦亮[1] 胡鹏[1] 

机构地区：[1]北京市市政工程设计研究总院有限公司,北京市100082

出　　处：《城市道桥与防洪》2015年第4期74-77,11,共4页Urban Roads Bridges & Flood Control

摘　　要：针对某旧桥不满足抗震性能要求的问题,提出采用铅芯橡胶支座进行减震。以双线性模型模拟支座,并选取合适的地震波时程对桥梁下部结构进行时程分析。结果表明,E2地震下结构内力大幅削减,变形满足要求,实现了抗震加固的目标。Aiming at the problem of an old bridge not able to meet the seismic property requirement, the lead rubber bearing is proposed to use for the seismic reduction. The bilinear model is used to simulate the bearing and the suitable seismic wave time history is selected to carry out the time history analysis of the bridge substructure. The result shows that the inner force of structure is greatly reduced in E2 earthquake and the deformation meets the requirement so as to realize the objective of seismic reinforcement.

关 键 词：旧桥 铅芯橡胶支座 抗震加固 时程分析 

分 类 号：U455.72[建筑科学—桥梁与隧道工程]