隔震结构的基本特性和减震机理探讨

摘要

Seismic isolated structure is setting the seismic isolation layer between the building superstructure and foundation, in order to extend the entire structural system vibration period, increase the damping, reduce the input of the seismic action of the upper structure, and achieve the desired shock preventing requirements. In this paper, we make specific engineering design and analysis, and make a more comprehensive discussion of the basic principles of seismic isolation technology, seismic isolation designing and seismic isolation device, using the finite element model to make modal analysis and nonlinear time history analysis, making a more in-depth study of the basic characteristics and shock-absorbing mechanism of the seismic isolated structure.%隔震结构指在建筑物基础与上部结构之间设置隔震层,来增大阻尼、延长结构体系的自振周期、减小向上部结构的地震作用输入,达到预期的防震要求.文中对具体工程进行设计和分析,对隔震技术的基本原理、隔震设计、隔震装置等方面作了较全面的论述,并采用有限元模型进行模态分析和非线性时程分析,较深入地研究了隔震结构的基本特性和减震机理.