双塔连体不规则框架结构抗震性能研究

发布时间：2018-09-11 13:52

【摘要】：双塔连体结构作为高层建筑中一种新型的结构形式不断地出现在各大城市中,并且往往作为地标性建筑。因此,加强对这一结构体系的抗震研究具有十分重要的意义。本文简要介绍了双塔连体这一结构体系的基本概况,论述了目前抗震分析中常用的几种抗震理论,然后建立了四种连体布置不同的双塔结构的计算模型模型,结合SAP2000这一有限元分析软件对其进行了模态分析、反应谱分析、时程分析以及静力非线性分析。主要研究了以下几个方面的内容:1.对连体布置不同的四个双塔连体模型分别进行了模态分析。根据规范关于振型数选取的要求,本文对每一个模型都截取了前20阶,对其周期、振型以及质量参与系数进行了分析。同时也为进一步的动力分析提供了体系的基本动力参数。2.在反应谱分析中,本文首先对四个模型均进行了X向地震作用下的反应谱分析,分别得到其在地震作用下的楼层位移和层间位移角,研究其连体不同布置对其地震响应的影响。紧接着又对在单向反应谱分析中差别较大的模型一和模型二进行了双向地震作用下的反应谱分析,根据楼层位移和层间位移角探讨模型的双向耦联效应。3.在对模型进行时程分析的时候,首先输入两条天然波和一条人工波,对模型进行线性时程分析,探讨体系在不同地震波作用下的地震响应。此外,本文还对模型一进行了罕遇地震作用下的非线性时程分析,研究了结构在大地震作用下的具体破坏过程。4.本文还通过对结构模型进行Pushover分析,得到了其性能点和塑性铰的分布,进一步研究其在地震作用下的破坏过程。
[Abstract]:As a new type of structure in high-rise buildings, double-tower contiguous structure appears continuously in large cities and is often used as a landmark building. Therefore, it is of great significance to strengthen the seismic research of this structural system. This paper briefly introduces the basic situation of the two-tower conjoined structure system, discusses several seismic theories commonly used in seismic analysis at present, and then establishes the calculation models of four kinds of twin-tower structures with different conjoined arrangement. The modal analysis, response spectrum analysis, time history analysis and static nonlinear analysis are carried out with the finite element analysis software SAP2000. Mainly studied the following aspects of the content of the following aspects: 1. The modal analysis of four twin tower models with different joint arrangement is carried out. According to the requirements of the specification for selecting the number of modes, this paper intercepts the first 20 orders of each model, and analyzes its period, mode shape and mass participation coefficient. At the same time, it also provides the basic dynamic parameters. 2. 2 for further dynamic analysis. In the analysis of response spectrum, the response spectrum analysis of the four models under the action of X-direction earthquake is carried out, and the floor displacement and the interstory displacement angle under the earthquake action are obtained respectively, and the influence of the different arrangement of the connected body on the seismic response is studied. Then, the bidirectional coupling effect of model 1 and model 2, which are different in unidirectional response spectrum analysis, is analyzed under the action of bidirectional earthquake. According to the displacement angle of floor and floor, the bidirectional coupling effect of the model is discussed. In the time history analysis of the model, two natural waves and one artificial wave were input first, and then the linear time-history analysis was carried out to study the seismic response of the system under different seismic waves. In addition, the nonlinear time-history analysis of model one under the action of rare earthquakes is carried out, and the concrete failure process of the structure under the action of large earthquakes is studied. Through the Pushover analysis of the structural model, the distribution of the performance points and the plastic hinge are obtained, and the failure process of the structural model under earthquake action is further studied.
【学位授予单位】：安徽建筑大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU973.31

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