【作者】 王平；

【导师】 何益斌；

【作者基本信息】 湖南大学 ， 结构工程， 2008， 硕士

【摘要】 随着现代高层建筑的功能日趋复杂,常规结构已不能满足强度、刚度及延性的要求。将上部结构标准层的小柱网变为下部公共服务层的大柱网,设置结构转换层是一种十分必要的结构形式。目前,转换层结构在国内已有大量的工程实践,但它们较多的采用梁式转换层。而对于上、下柱网轴线布置十分不规则,且体型复杂的建筑,则宜采用厚板转换层,但是,厚板转换层具有自重大,水化热大等缺点,从而,限制了其在高层建筑中的应用。为了解决厚板转换层的这些工程技术问题,本文在厚板转换层的受力机理研究基础上,提出了空心厚板转换层这一概念,并对其受力性能及其承载力进行了研究。本文利用ANSYS对多种不同布置方式的剪力墙和柱的厚板进行有限元分析,根据结果分析认为,厚板转换层受力符合空间桁架模型,并在此基础上讨论了如何建立空间桁架模型和空心厚板转换层,即在厚板主要受力的部位采用高强混凝土,而在其他的一些次要的或受力较小的部位把混凝土去掉,形成空心结构,即形成了空心厚板转换层。同时,利用他人已有的试验数据,拟合出了桁架模型中压杆的劈裂强度与抗拉强度之间的关系。基于厚板的受力模型,对空心厚板的拉杆、压杆进行了材料的选择,最后对拉杆和压杆的配筋进行了计算并确定了厚板的厚度。更多还原

【Abstract】 In recent years, the fuction of high-rise building is becoming more and more complex, therefor, the nomal structure can not satisfy the demands of strength, rigity and ductility. Establishing thick plate transition storey is a necessary structural form, when the small size column grids at the up storey is changed into large size column grids at the bottom storey. At the present time, a lot of projects are adopted the transition storey, however most of them are the beam transition storey. The thick plate transition storey should be also adopted in the high-rise building, the layout of which column grids are irregular and whose shape is complex. However, the application of the thick plate transition storey in high-rise building is restrictted by it’s disadvantage such as the very heavy self weight, hydration heat, and so on. So as to solve the engineering technology problem of the thick plate transition storey in high-rise building, therefor, the concept of hollow thick plate transition storey is proposed base on the study of analysis of bearing mechanism of the thick plate transition storey, and the research on bearing capacity and bearing mechanism is done in this paper.It is analysed to the thick plate of various layout of the shearing wall and column using the finite element method in this thesis. According to the results of the analysis, the bearing mechanism of the thick plate transition storey is accordance with the model of the space truss. Base on the space truss model, we discuss how to establish the space truss model of the thick plate transition storey and how to establish the hollow thick plate transition storey. That is the high strength concrete is used in main compression member, and the concrete is removed at the other part of the secondary. Then the hollow slab is formed (i.e. the hollow thick plate transition storey is established). Then the relationship between splitting strength and tensile strength is deduced using the existing test data. Base on the bearing mechanism of the thick plate transition storey, it is determined how to choose the material and design of the compression member and tension member for the hollow thick plate. And the thickness of the thick plate is also determined in this thesis.更多还原