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带板式转换层的框架剪力墙结构抗震性能研究

发布时间:2018-11-05 16:48
【摘要】:随着建筑行业的发展以及人们对建筑功能的需求,带转换层的高层建筑已经广泛地应用于人们的生活当中。在我国应用最多的转换层结构是梁式转换层,工程界对于梁式转换层的研究相对较多也比较深入,一些研究成果已经写入了现行规范。板式转换层在地震区应用的相对较少,工程界对于板式转换层的研究还不够深入,随着人们对建筑功能的要求越来越高,板式转换层的使用也会越来越多,对板式转换层的研究也将更加深入。本文结合板式转换结构的应用现状及文献资料,系统地研究了板式转换结构的理论及抗震计算方法。针对板式转换结构的抗震性能问题,利用有限元分析软件ANSYS建立数值计算模型,对结构进行了动力特性、反应谱与瞬态动力学分析,研究了板式转换结构的动力性能及地震响应,并且对比了梁式转换结构与板式转换结构在抗震性能方面的差异,分析了转换形式的改变对自振周期、楼层位移、层间位移角以及楼层剪力的影响。结果表明:对于转换层上下轴线错开较多的框架剪力墙结构,板式转换层比梁式转换层整体抗震性能好,局部抗震性能稍差,在进行结构选型时,要综合考虑多方面的因素;板式转换结构布置合理时,能够在7度地区采用。通过改变板式转换结构落地剪力墙厚度与转换板厚度,研究了参数改变对板式转换结构动力特性及抗震性能的影响。结果表明,随着落地剪力墙厚度的增加,转换层下部结构与上部结构的等效侧向刚度比逐渐增大,结构的自振周期、楼层位移及层间位移角减小,抗震性能提高。随着转换板厚度的增大,结构前几阶自振周期、楼层位移减小;在转换板的下部,层间位移角变化较小,在转换板的上部,层间位移角减小。本文的研究表明,选择合理的参数可以使结构的抗震性能达到最优。
[Abstract]:With the development of the construction industry and the demand of the building function, the high-rise building with the transition floor has been widely used in people's life. The most widely used transfer layer structure in China is the beam transfer layer, and the research on the beam transfer layer has been studied more deeply in the engineering field, and some research results have been written into the current code. The application of plate transfer layer in earthquake area is relatively few, and the research on plate transfer layer is not deep enough in engineering field. With the increasing demand for building function, the use of plate transfer layer will be more and more. The research on the plate transfer layer will also be more in-depth. In this paper, the theory and aseismic calculation method of plate type transfer structure are systematically studied in combination with the present situation of application and literature data of plate type transfer structure. In view of the seismic behavior of plate type transfer structure, a numerical model is established by using finite element analysis software ANSYS, and the dynamic characteristics, response spectrum and transient dynamics of the structure are analyzed. The dynamic performance and seismic response of plate type transfer structure are studied, and the difference of seismic performance between beam type transfer structure and plate type transfer structure is compared, and the natural vibration period and floor displacement are analyzed. The influence of interstory displacement angle and floor shear force. The results show that: for the frame shear wall structure with more misalignment between the upper and lower axes of the transfer layer, the whole seismic performance of the plate transfer layer is better than that of the beam transfer story, and the local seismic performance is slightly worse. When selecting the structure, many factors should be considered comprehensively. When the plate transfer structure arrangement is reasonable, it can be used in 7 degree area. By changing the thickness of the floor shear wall and the thickness of the transfer plate, the influence of the change of the parameters on the dynamic characteristics and seismic performance of the plate type transfer structure is studied. The results show that with the increase of the thickness of the shear wall, the equivalent lateral stiffness ratio of the substructure of the transfer layer to the superstructure increases gradually, the natural vibration period of the structure, the displacement angle between the floor and the floor decreases, and the seismic performance is improved. With the increase of the thickness of the transfer plate, the floor displacement decreases in the first few natural vibration periods of the structure, while in the lower part of the transfer plate, the change of the interstory displacement angle is small, and in the upper part of the transfer plate, the interstory displacement angle decreases. The research in this paper shows that the optimum seismic performance of the structure can be achieved by selecting reasonable parameters.
【学位授予单位】:辽宁工程技术大学
【学位级别】:硕士
【学位授予年份】:2014
【分类号】:TU973.16;TU973.31

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