【作者】 高菲；

【导师】 王永岩；

【作者基本信息】 辽宁工程技术大学 ， 工程力学， 2003， 硕士

【摘要】 基础滑移摩擦隔震技术是结构被动控制中的最重要的方法之一。它利用上部结构与固结于地基中的基础间的隔震层，阻隔地震波向上部结构的传播，从而大大减轻了结构的地震反应，保证了建筑物的安全，具有广阔的应用前景。但基底摩擦力的非线性给分析计算带来了一定的困难。目前常用的计算摩擦隔震建筑物振动反应的数值方法主要有两种，一种是等效线性阻尼方法，另一种是求解非线性微分方程的数值积分方法(Wislon-θ法)。但上述这两种方法都存在一定的不足。本文利用对摩擦力和地震响应进行付氏级数展开的方法导出了基底具有摩擦隔震系统的地震反应。 同时，文中从研究单质点结构的滑动振动惯性力入手，进而对多质点结构体系滑动振动反应进行探讨，分别给出了结构滑动隔震的自身稳定条件。 最后，本文利用Ansys对基础固定和基础滑移隔震两种工况进行了动力模拟仿真分析，进一步证实了基础滑移隔规律。更多还原

【Abstract】 Base isolation of sliding and friction is one of the most imoirtant methods of obiective control of structures.However,buildings can remain security by adopting the friction base isolation technique.The earthquake response of the structure can also be greatly reduce by installing the base isolation layer between the superstructure and the foundation fixed in the ground.This isolation layer can prevent the propagation of the earthquake wave to the superstructure. So this base isolation technique has profound prospects.Unfortunately there exist definite difficulties in the calculation because of the nonlinear of the base friction force.Now,both the equivalent damping method and the numerical calculatin of the vibration response of the base-isolated buildings are frequently used in the calculation of the seismic response of the base-isolated building.However both of them have certain drawbacks.In this paper,the response of the building with base-isolation system is derived by the method of Fourier expansion for the friction force and the earthquake response.At the same time,the sliding vibration character of inertia of a single mass structure and the sliding vibration response of a muti-mass structure are discussed.The stable condition of the sliding base isolation system of a structure is given.In the end,two circes of base fixation and base sliding are analyzed by adopting Ansys.更多还原