自复位刚性滑板隔震支座水平力学性能研究  

Research on horizontal mechanical properties of self⁃reset rigid slide plate isolation bearings

作　　者：李武杰 赖正聪[1,2] 王晶 何锦涛[1,2] LI Wujie;LAI Zhengcong;WANG Jing;HE Jintao(Faculty of Civil Engineering,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Earthquake Engineering Research Center,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,昆明650500 [2]云南省工程抗震技术研究中心,昆明650500

出　　处：《建筑结构》2024年第13期105-111,共7页Building Structure

基　　金：云南省科技厅重点研发计划项目(202003AC100001)。

摘　　要：介绍了自复位刚性滑板隔震支座的基本构成和隔震原理,基于力学平衡原理,对自复位刚性滑板隔震支座进行了理论分析,推导了支座的等效刚度,构造了支座的滞回模型,探讨了支座的回复特性。使用电液伺服压剪试验机测试了支座在低周往复荷载作用下的滞回特性及回复能力。采用ABAQUS软件模拟支座在水平位移激励作用下的滞回特性及回复能力。结果表明:数值模拟结果和试验结果较吻合;自复位刚性滑板隔震支座的滞回性能良好,压力越大,滞回曲线越饱满;该支座往复加载过程的最大应力位于刚性滑块的中心位置,处于弹性范围内;该支座的自复位能力与滑动面摩擦系数呈反相关,与回复橡胶的剪切模量呈正相关。The basic structure and isolation principle of the self⁃reset rigid slide plate isolation bearing were introduced,the self⁃reset rigid slide plate isolation bearing was theoretically analyzed based on the mechanical balance principle,the equivalent stiffness of the bearing was deduced,and the hysteretic model of the bearing was constructed,the recovery characteristic of the bearing was discussed.The hysteretic characteristics and recovery ability of the bearing under cyclic load were tested by using an electro⁃hydraulic servo compression⁃shear testing machine.The hysteretic characteristics and recovery of the bearing under horizontal displacement excitation were simulated by ABAQUS software.The results show that the numerical simulation results are in good agreement with the experimental results,and the hysteretic performance of the self⁃reset rigid slide plate isolation bearing is good,and the greater the pressure is,the fuller the hysteretic curve is.The maximum stress in the cyclic loading process of the bearing is located in the center of the rigid slider and in the elastic range.The self⁃reset ability of the bearing is inversely correlated with the friction coefficient of the sliding surface and positively correlated with the shear modulus of the recovery rubber.

关 键 词：自复位刚性滑板隔震支座 低周往复荷载 滞回特性 回复能力 摩擦系数 

分 类 号：TU352.12[建筑科学—结构工程]