水中基础隔震结构地震反应分析

建立了考虑动水压力作用下,利用砂垫层隔震的海上基础隔震模型和运动方程,基于运动方程求解,应用有限元软件ANSYS对希腊Rion-Antirion桥悬索塔进行模拟,通过多种隔震方案的分析比较,得出隔震层存在一最优隔震刚度,同时还发现,不同形式地震波输入对基础隔震结构的地震反应存在区别,并得出砂垫层隔离地震能量效果明显的结论。

The seismic response analysis of offshore base isolation structure

This paper establishes offshore base isolation model and motion equations which utilizes sand cushion as an isolation layer and also considers the hydrodynamic pressure action.The large universal finite element software ANSYS is applied to solve the model of the cable tower of the Greece Rion-Antirion bridge.By compared with several isolation schemes,it concludes that isolation layer has an optima isolation stiffness.Meanwhile,it shows that base isolation structure have differences by inputing different for...