【摘要】：為了對橋梁抗震性能進(jìn)行研究,建立摩擦擺支座有限元動力分析模型,選用典型地震波輸入進(jìn)行時程分析,對地震波作用下摩擦擺支座性能參數(shù)進(jìn)行定量分析。計算結(jié)果表明:Abaqus仿真模擬與理論分析結(jié)果吻合較好,由得到的滯回曲線可知,摩擦擺具有良好的滯回耗能性能;最大水平位移與地震波加速度峰值近似為線性關(guān)系,需安裝限位裝置并控制殘余位移;最大水平位移隨著摩擦因數(shù)的增大而減小,當(dāng)μ≤0.06時,滑道半徑對最大水平位移有較大影響;摩擦擺初始狀態(tài)位于最大殘余位移處時,最大水平位移隨著摩擦因數(shù)的增大而快速增加,且滑道半徑越大,增長幅度越大;在滿足摩擦擺最大位移要求、避免粘滯現(xiàn)象發(fā)生的前提下,7度、8度、9度設(shè)防區(qū)域最佳摩擦因數(shù)范圍為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，

本文編號：2217994