滑移隔震结构的地震反应分析

Earthquake Response Analysis of Structures with Sliding Base Isolators

本文提出了既能正确反映摩擦力特性又便于编程的连续型指数摩擦力模型。基于此模型 ,利用高精度的精细时程积分法 ,计算滑移隔震结构的地震响应 ,绘制了上部结构动力系数反应谱和基底最大滑移量反应谱。通过对计算实例的分析发现 。

This paper presents a sequential exponential friction model which describes not only the friction characteristics correctly but is also convenient for computer programming. Based on this model, earthquake response of sliding isolated structure is calculated with a high order precise direct integration method. Numerical results are presented in terms of dynamic coefficient response spectrum for the superstructure and maximum sliding displacement response spectrum for the base. Through the analysis of a practical example, it is found that the distribution of maximum shear force between floors and maximum absolute acceleration of the sliding isolated structure under earthquake action is very different from that of traditional structures.