斜向旋转型三维隔震装置的力学模型和试验研究  

Mechanical model and experimental research of the inclined rotational three-dimensional seismic isolation device

作　　者：杨巧荣[1] 王梁亚 刘文光 许浩[1] 徐鸿飞 YANG Qiao-rong;WANG Liang-ya;LIU Wen-guang;XU Hao;XU Hong-fei(Department of Civil Engineering,Shanghai University,Shanghai 200444,China;Liuzhou Oriental Engineering Rubber Products Co.Ltd.,Liuzhou 545006,China)

机构地区：[1]上海大学土木工程系,上海200444 [2]柳州东方工程橡胶制品有限公司,广西柳州545006

出　　处：《振动工程学报》2021年第3期462-471,共10页Journal of Vibration Engineering

基　　金：强震下核电隔震结构的变频黏滞阻尼减震效应研究(51778356)。

摘　　要：针对斜向旋转型三维隔震装置的变形及力学性能特点,介绍了该三维隔震装置的组成部件、变形机理和力学性能设计方法,建立其水平平动刚度模型、竖向力-位移滞回模型,确定了三维隔震装置的水平平动刚度、竖向压缩刚度和水平扭转刚度理论公式。采用300型三维隔震支座进行了竖向加载力学性能试验,拟静力试验结果表明,该三维隔震装置竖向变形形式符合理论机理,滞回性能和承载能力稳定,将三维隔震装置加载、卸载竖向刚度及等效黏滞阻尼比的理论计算值和试验实测值进行对比分析,结果吻合较好。通过对三维隔震装置进行有限元模拟分析,验证了理论分析和静力试验所得出的水平和竖向滞回模型的正确性。Aiming at the deformation and mechanical properties of the inclined rotational three-dimensional seismic isolation device,the components,deformation mechanism and mechanical property design method of the device are introduced.The horizontal translational stiffness model and the vertical load-displacement hysteretic model are established.The horizontal translational stiffness,vertical compressive stiffness and horizontal torsional stiffness of the device are determined.The mechanical properties of 300 type three-dimensional isolation bearings under vertical loading are tested.The results of pseudo-static test show that the vertical deformation of the three-dimensional isolation device conforms to the theoretical mechanism.And the vertical hysteretic performance and load-carrying capacity are stable.Comparing the theoretical calculation values of the loading/unloading vertical stiffness and equivalent viscous damping ratio of three-dimensional isolation device with the experimental measured values,the results show that the theoretical and experimental results are in good agreement.Based on the finite element software,the device model is established,and the numerical simulation calculation under the same case as the static test is carried out.It is in good agreement with the theoretical model and the static test curve.At the same time,the translational simulation of the three inclined bearings is carried out.The horizontal stiffness of the device is basically consistent with the theoretical value,which verifies the validity of the theoretical model.

关 键 词：三维隔震 倾斜旋转摩擦 力学模型 静力试验 有限元分析 

分 类 号：TU352.1[建筑科学—结构工程]