防灾减灾工程学报2011，Vol.31Issue(1)：56-62,7.
摩擦摆隔震支座理论分析与数值模拟研究
Study on Theoretical Analysis and Numerical Simulation of Friction Pendulum Bearing
摘要
Abstract
The basic structure and the seismic isolation principle of the friction pendulum bearing(FPB) are introduced. The theoretical analysis study on FPB based on the principle of mechanical equilibrium is conducted. The stiffness and the effective viscous damping ratio of FPB are derived and also the hysteretic model is constructed, while its recovery mechanism is discussed and the computing formula of maximum residual displacement is obtained as well. Moreover, the model with solid element of FPB is built by using ABAQUS software. The hysteretic property under low cyclic loading and the recovery characteristic are simulated. It is shown that: (1) the results of numerical simulation agree well with that of theoretical analysis. The hysteretic model and the computing formula of maximum residual displacement proposed are verified. (2) FPB has favorable hysteretic property according to its plump hysteretic curve. (3) The stiffness of FPB is inversely proportional to the spherical radius, and the probable maximum residual displacement of FPB is the product of friction coefficient and spherical radius. (4) The maximum stress of bearingappears when the bearing reaches its design displacement, and it may generally situate at the edge of balljoint surface of slider or bearing plate.关键词
摩擦摆隔震支座/低周反复/滞回特性/回复能力/摩擦系数/球面半径Key words
friction pendulum bearing/ low cyclic/ hysteretic property/ recovery capability/ friction coefficient/ spherical radius分类
建筑与水利引用本文复制引用
龚健,邓雪松,周云..摩擦摆隔震支座理论分析与数值模拟研究[J].防灾减灾工程学报,2011,31(1):56-62,7.基金项目
广东省自然科学基金研究团队项目(8351009101000001)资助 （8351009101000001）
