板式橡胶支座与梁底滑动性能试验研究  

Experimental Investigations on Sliding Performance between Laminated Rubber Bearing and Girder Bottom

作　　者：冯克岩 方圆[2] 陈旭[3] FENG Keyan;FANG Yuan;CHEN Xu(Tianjin Municipal Engineering Design&Research Institute,Tianjin 300392,China;Anhui Transport Consulting&Design Institute Co.,Ltd.,Hefei 230000,China;Department of Bridge Engineering,College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]天津市政工程设计研究总院有限公司,天津300392 [2]安徽省交通规划设计研究总院股份有限公司,合肥230000 [3]同济大学土木工程学院桥梁工程系,上海200092

出　　处：《结构工程师》2025年第2期94-101,共8页Structural Engineers

基　　金：天津市交通运输科技发展计划项目(2021-01)。

摘　　要：针对地震中出现的板式橡胶支座与梁底间滑移的典型震害现象,首先开展了支座与钢板间摩擦耗能机制的足尺拟静力试验,探究了竖向压应力、滑动速度等参数变化对板式橡胶支座力与位移关系曲线、水平剪切变形和剪切刚度,以及滑动摩擦系数的影响规律。在此基础上,开展橡胶支座-质量块支承系统的振动台试验,研究了简谐波、地震波输入情况下橡胶支座与钢板之间的摩擦耗能性能。研究结果可为采用板式橡胶支座的桥梁抗震设计提供支撑。Based on the typical sliding damage between laminated rubber bearings and steel plates embedded at girder bottom occurred in extensive earthquakes,full-scale quasi-static experiments are first conducted to explore the frictional energy dissipation mechanism between bearing and steel plate.The effects of vertical stress and sliding velocity on the behavior of laminated rubber bearings are investigated,including the forcedisplacement relationship,lateral shear deformation and shear stiffness,and the coefficient of friction.Additionally,shake table tests are further carried out on rubber bearing-mass block system,where both harmonic excitation and recorded seismic ground motion are used as input to investigate the sliding frictional performance between bearings and steel plate.Conclusions from these experiments can serve as foundations supporting seismic design of bridges with laminated rubber bearings.

关 键 词：板式橡胶支座 摩擦性能 拟静力试验 振动台试验 

分 类 号：U443.36[建筑科学—桥梁与隧道工程]