雙塔連體不規(guī)則框架結構抗震性能研究
[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.
【學位授予單位】:安徽建筑大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:TU973.31
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