弹簧改进型双凹面摩擦摆隔震支座理论分析与数值模拟研究  

Theoretical Analysis and Numerical Simulation of Spring Modified Double-concave Friction Pendulum Isolation Bearing

作　　者：谢黄东 陶忠[1,2] 张龙飞 赵李俊 刘海龙 XIE Huangdong;TAO Zhong;ZHANG Longfei;ZHAO Lijun;LIU Hailong(School of Architectural Engineering,Kunming University of Science and Technology,Kunming,Yunnan 650051,China;Engineering Seismic Institute in Yunnan Province,Kunming,Yunnan 650500,China;School of Civil Engineering,Kunming University,Kunming,Yunnan 650214,China;T.Y.Lin International Engineering Consulting(China)Co.,Ltd.,Chongqing 401121,China;School of Civil Engineering,Lanzhou University of Technology,Lanzhou,Gansu 730050,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650051 [2]云南省工程抗震研究所,云南昆明650500 [3]昆明学院建筑工程学院,云南昆明650214 [4]林同棪国际工程咨询(中国)有限公司,重庆401121 [5]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《施工技术（中英文）》2021年第15期49-53,共5页Construction Technology

基　　金：国家重点研发计划(2017YFC0707603);国家科技支撑计划(2013BAK13B01);云南省教育厅科学研究基金(2020J0513)。

摘　　要：介绍弹簧改进型双凹面摩擦摆隔震支座基本构造,基于力学平衡原理进行理论分析,推导支座刚度、周期表达式等。采用有限元软件ABAQUS建立双凹面摩擦摆隔震支座与弹簧改进型双凹面摩擦摆隔震支座模型,对不同弹簧刚度、摩擦系数下的支座滞回特性等进行分析。研究结果表明,理论计算得到的弹簧改进型双凹面摩擦摆隔震支座滞回曲线与数值模拟结果吻合较好,可知理论公式推导合理;弹簧改进型双凹面摩擦摆隔震支座滞回曲线饱满且对称,表明支座具有良好的耗能能力;为保证减隔震效果,应合理设置弹簧刚度、摩擦系数;应选择合适的球铰面尺寸,并使支座保持弹性状态。The basic structure of the spring modified double-concave friction pendulum isolation bearings is introduced. The theoretical analysis is carried out, and the stiffness and period expression of the bearing are deduced based on the principle of mechanical balance. The model of the double-concave friction pendulum isolation bearings and spring modified double-concave friction pendulum isolation bearings are established by the finite element software ABAQUS, the hysteretic characteristics of the bearings under different spring stiffness and friction coefficient were analyzed. The research results show that the calculated hysteresis curves of the spring modified double-concave friction pendulum isolation bearings are in good agreement with the numerical simulation results, which indicates that the theoretical formula is reasonable. The hysteresis curves of the spring modified double-concave friction pendulum isolation bearings are full and symmetrical, which indicates that the bearings have good energy dissipation capacity. In order to ensure the effect of shock reduction and isolation, the spring stiffness and friction coefficient should be set reasonably. The proper size of the ball hinge surface should be selected, and the support should be kept in elastic state.

关 键 词：隔震支座 摩擦摆 滞回曲线 低周荷载 恢复力特性 

分 类 号：TU352[建筑科学—结构工程]