基于隔振设计的连续梁桥抗震分析

基于高烈度地区某高速公路上的连续梁桥（20m＋30m＋30m＋20m）,利用Midas软件建立了桥梁三维空间模型,模拟铅芯隔震橡胶支座和盆式橡胶支座的力学性能,采用非线性时程计算方法分析了桥梁的动力特性及抗震性能。研究结果表明：采用隔震设计之后,结构反应得到了很好的控制,确保了桥梁结构的安全性。

Analysis on Seismic Resistance of Continuous Girder Bridge Based on Design of Vibration Isolation

Based on the continuous girder bridge(20m+30m+30m+20m) of a highway in a high seismic region,a three-dimensional space model is set up by using of Midas software;the mechanical property of lead rubber bearing and pot rubber bearing is stimulated;the dynamic property and seismic performance of the bridge is analyzed by the adoption of nonlinear time history calculation method.The results show that after the adoption of the design of vibration isolation,structural response is brought under control and the safety of bridge structure is ensured.