自复位刚性滑移隔震支座剪切性能试验研究  

Experimental Study on Shear Performance of Self-resetting Rigid Sliding Isolation Bearing

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

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

出　　处：《施工技术（中英文）》2023年第3期66-71,共6页Construction Technology

基　　金：云南省科技厅重点研发计划(202003AC100001)。

摘　　要：基于滑动摩擦隔震技术,将滑移隔震支座的摩擦滑移元件和叠层橡胶隔震支座的橡胶元件并联形成自复位刚性滑移隔震支座,并研究该支座的剪切性能,共进行3种竖向压应力作用下的拟静力压剪试验,分析不同竖向压应力及水平剪切变形对支座剪切性能的影响。以试验数据为基准,提出自复位刚性滑移隔震支座恢复力模型。基于ABAQUS软件进行数值模拟分析,验证试验结果及恢复力模型的准确性。研究结果表明,随着自复位刚性滑移隔震支座剪切变形的增大,支座耗能增大,等效刚度及等效阻尼比减小;随着竖向压应力的增大,支座耗能、等效刚度及等效阻尼比均增大。试验与数值模拟得到的自复位刚性滑移隔震支座水平荷载-位移滞回曲线较吻合,滞回曲线均符合提出的恢复力模型。Based on the sliding friction isolation technology, the friction sliding element of the sliding plate isolation bearing and the rubber element of the laminated rubber isolation bearing are paralleled to form a new type of isolation bearing, which is self-resetting rigid sliding isolation bearing. The quasi-static compression-shear tests under three kinds of compressive stresses were carried out to study the shear performance of the bearing, and the effects of different compressive stresses and different horizontal shear deformations on the shear performance of the bearing were analyzed. Based on the test data, the restoring force model of the bearing is proposed. Numerical simulation analysis of the bearing based on ABAQUS finite element software to verify the accuracy of the test results and the restoring force model. The research results show that with the increase of the shear deformation of the bearing, the energy consumption of the bearing increases, and the equivalent stiffness and equivalent damping ratio decrease. The energy dissipation, equivalent stiffness and equivalent damping ratio of the bearing increase with the increase of compressive stress. The horizontal load and displacement hysteresis curves of the bearing obtained by the test and numerical simulation are in good agreement, and the hysteresis curves are in line with the proposed restoring force model.

关 键 词：隔震支座 复位橡胶 剪切性能 滞回性能 耗能 

分 类 号：TU352[建筑科学—结构工程]