摩擦摆支座动力响应及隔震性能分析

发布时间：2018-09-01 18:27

【摘要】：为了对桥梁抗震性能进行研究,建立摩擦摆支座有限元动力分析模型,选用典型地震波输入进行时程分析,对地震波作用下摩擦摆支座性能参数进行定量分析。计算结果表明:Abaqus仿真模拟与理论分析结果吻合较好,由得到的滞回曲线可知,摩擦摆具有良好的滞回耗能性能;最大水平位移与地震波加速度峰值近似为线性关系,需安装限位装置并控制残余位移;最大水平位移随着摩擦因数的增大而减小,当μ≤0.06时,滑道半径对最大水平位移有较大影响;摩擦摆初始状态位于最大残余位移处时,最大水平位移随着摩擦因数的增大而快速增加,且滑道半径越大,增长幅度越大;在满足摩擦摆最大位移要求、避免粘滞现象发生的前提下,7度、8度、9度设防区域最佳摩擦因数范围为0.02~0.03、0.04~0.05、0.06~0.07。
[Abstract]:In order to study the seismic behavior of the bridge, the finite element dynamic analysis model of the friction pendulum bearing is established, and the time history analysis of the typical seismic wave input is carried out, and the performance parameters of the friction pendulum bearing under the action of the seismic wave are quantitatively analyzed. The calculated results show that the results of the simulation and the theoretical analysis are in good agreement with the results of the theoretical analysis. According to the obtained hysteretic curves, the friction pendulum has good hysteretic energy dissipation performance, and the maximum horizontal displacement is approximately linear with the peak acceleration of seismic wave. The maximum horizontal displacement decreases with the increase of friction coefficient, when 渭 鈮，

本文编号：2217994