结构的超限分析与Pushover的工程应用

发布时间：2018-04-07 15:10

本文选题：复杂超限结构　切入点：静力弹塑性分析　出处：《河北工程大学》2013年硕士论文

【摘要】：地震是一种突发式的自然灾害给人类社会带来灾难造成不同程度的人身伤亡和经济损失。我国地震断裂带分布广泛,同时也是世界上遭受地震危害较重的国家之一。随着我国社会科技和经济的迅猛发展,高层建筑在我国的发展非常迅速,对高层建筑而言,地震作用是结构计算分析的主要控制因素,因此,对结构抗震计算的分析方法也在不断地研究和改进。静力弹塑性Pushover分析方法是当前主要使用的方法之一,它将结构静力弹塑性分析与地震反应谱结合起来,在一定条件下简单有效地评价结构抗震能力。目前已得到推广应用并被列入我国建筑抗震设计规范中。本文介绍了近年来国内外对静力弹塑性分析方法的研究发展现状、静力弹塑性Pushover分析方法的基本含义；通过采用MIDAS/Gen、ETABAS两种计算程序对复杂超限结构工程进行超限审查分析,并论述静力弹塑性Pushover分析方法的优点、局限性、应用背景、基本原理、静力弹塑性Pushover分析方法注意问题。本文采用MIDAS/Gen程对工程实例进行静力弹塑性Pushover分析,得到能力谱曲线、结构达到性能点时的层间位移和层间位移角以及塑性铰发展图,从而判断结构的薄弱部位,结构的抗震承载能力是否能够达到在不可知地震发生时结构的性能目标。同时验证Pushover分析方法在结构抗震分析中的可行性。通过本文对超限结构静力弹塑性Pushover分析方法的研究得出结论和展望,对超限结构在工程中的分析具有一定的参考价值及指导意义。
[Abstract]:Earthquake is a kind of sudden natural disaster that brings disaster to human society, resulting in different degrees of casualties and economic losses.The earthquake fault zone is widely distributed in China, and is also one of the countries that suffer more serious earthquake damage in the world.With the rapid development of social science, technology and economy in our country, high-rise buildings are developing very rapidly. For high-rise buildings, seismic action is the main controlling factor of structural calculation and analysis.The analytical method of seismic calculation of structures is also being studied and improved continuously.Static elastoplastic Pushover analysis method is one of the main methods used at present. It combines static elastoplastic analysis with seismic response spectrum to evaluate the seismic capacity of the structure under certain conditions.At present, it has been popularized and included in the code for seismic design of buildings in China.This paper introduces the research and development of static elastoplastic analysis methods at home and abroad in recent years, the basic meaning of static elastic-plastic Pushover analysis method, and the analysis of complex over-limit structures by using Midas / Genestra ETABAS two kinds of calculation programs.The advantages, limitations, application background and basic principles of the static elastoplastic Pushover analysis method are discussed. The attention of the static elastoplastic Pushover analysis method is also discussed.In this paper, the static elastoplastic Pushover analysis of engineering example is carried out by using MIDAS/Gen equation, and the capability spectrum curve is obtained, the interstory displacement and the interstory displacement angle and the plastic hinge development diagram when the structure reaches the performance point are obtained, so as to judge the weak position of the structure.Whether the seismic bearing capacity of the structure can achieve the performance goal of the structure in the event of unknown earthquake.At the same time, the feasibility of Pushover analysis method in seismic analysis of structures is verified.In this paper, the conclusion and prospect of the static elastoplastic Pushover analysis method for the over-limit structure are obtained, which has certain reference value and guiding significance for the analysis of the over-limit structure in the engineering.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973.31

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