非平整隔震层曲面运动隔震结构的动力模型与响应控制

项目名称： 非平整隔震层曲面运动隔震结构的动力模型与响应控制

项目编号： No.51478257

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑科学

项目作者： 刘文光

作者单位： 上海大学

项目金额： 87万元

中文摘要： 我国汶川及雅安地震后高层隔震结构的建设得到迅速发展，通过强震观测记录、振动台试验及数值模拟发现高层隔震结构存在隔震层受拉及结构倾覆效应，这也成为高层隔震结构发展亟需解决的难题。本课题针对高层结构旨在提出非平整隔震层曲面运动隔震结构新体系，并以该体系运动状态、重力效应、非线性动力模型和响应控制为研究对象，研究内容涵盖：研究非平整隔震层曲面运动隔震结构的质点系多尺度计算模型及考虑空间受力状态的数学力学模型；研究非平整隔震层曲面运动隔震结构的水平和竖向地震响应特征、上部结构提离及回落效应及大变形下结构及隔震层的动力行为、隔震层曲面曲率及曲率分布与地震响应之间的内在相关性、界限位移状态上部结构及隔震层的临界响应规律；研究非平整隔震层曲面运动隔震结构在多类型场地的适用条件、基于反应谱理论的地震响应预测方法及基于时频域理论的平整隔震层曲面运动隔震结构设计方法。由于高层隔震结构发展的紧迫性及强地震下的安全性要求，本项目研究将为非平整隔震层曲面运动隔震结构体系提供必要的基础理论和设计依据，具有重要的理论意义和明确的应用前景。

中文关键词： 非平整隔震层；隔震结构；曲面运动；动力模型；振动控制

英文摘要： After Wenchuan Earthquake and Yaan Earthquake, high-rise isolated structure has been developed quickly. An urgent problem of high-rise isolated structure, bearings in tension and structure overturning effect, has being found through strong earthquake records and shaking table tests. In this program, a new high-rise isolated system with uneven isolation layer in curved surface motion is introduced. Its motion state, gravity effect, nonlinear dynamic model and response control are analyzed. The main researches are as follows: The models of isolated structure with uneven isolation layer in curved surface motion including particle systematic multi-scale computation model and mathematical mechanical model considering spatial stress status are established. The horizontal and vertical seismic response characteristics, correlation between isolation layer curvature and seismic response, the limit response rule of upper structure and isolation layer with limit displacement state are studied. The applicable conditions, application principles and seismic response prediction method based on spectrum theory of isolated structure with uneven isolation layer in curved surface motion applied in multi-class site are researched. There are significant theory meaning and specific application prospect in this research to provide high-rise isolation necessary basic theory and design basis due to the urgency of the development of high-rise isolated structure and security requirement under strong earthquake.

英文关键词： Uneven isolation layer;isolated structure;Curve surface movement;dynamic model;response control