竖向构件在地下室顶板上下层剪力传递机理的研究

发布时间：2018-01-09 03:17

本文关键词：竖向构件在地下室顶板上下层剪力传递机理的研究　出处：《华南理工大学》2013年硕士论文　论文类型：学位论文

【摘要】：目前，地下室结构在高层建筑结构中已得到广泛的应用，但是带地下室高层建筑结构的设计和理论还存在着尚未解决的问题，例如如何考虑回填土的约束作用、嵌固部位的选取等。另外，实际结构的地下室设置情况不尽相同，地下室侧壁对塔楼结构的约束作用也不相同，引起竖向构件在地下室顶板上下层的剪力的变化情况尚不明确。本文通过对大量文献资料进行整理、分析和研究，在理论公式推导的基础上，着重讨论分析了影响竖向构件在地下室顶板上下层剪力传递的主要因素，并采用有限元分析方法探讨了不同结构体系的竖向构件在地下室顶板上下层剪力传递的情况。本文主要内容为： 1、通过阅读大量现有文献及相关工程设计资料，重点阐述了带地下室高层建筑结构设计中尚存在的问题，最终确定了本文的研究方向；同时通过对现有分析方法和软件的评价，确定了后续分析中采用的分析手段和有限元软件。 2、在结构力学的基础上，推导出弹性杆在地下室位置的剪力与在首层位置的剪力的比值的表达式，并讨论了可能影响该表达式的因素； 3、建立平面框架模型，针对三种不同的地下室设置情况，讨论了框架柱在地下室位置的剪力与在首层位置的剪力之间的关系； 4、建立剪力墙结构、框架剪力墙结构、框支剪力墙结构和框架核心筒结构的有限元模型，采用PKPM和ETABS进行计算，，分析各结构体系的竖向构件在地下室顶板上下层的水平剪力传递情况； 5、评价理论分析和有限元分析的结果，归纳出竖向构件在地下室顶板上下层的剪力传递规律，为实际工程设计提供参考。
[Abstract]:At present, basement structure has been widely used in high-rise building structure, but there are still some unsolved problems in the design and theory of high-rise building structure with basement, such as how to consider the constraint of backfill. In addition, the actual structure of the basement settings are not the same, the basement side wall of the tower structure constraints are not the same. It is not clear that the shearing force of the vertical members in the upper and lower floors of the basement roof is not clear. In this paper, a large number of documents are sorted out, analyzed and studied, and based on the theoretical formula derivation. The main factors affecting the shear transfer of vertical members in the upper and lower floors of the basement roof are discussed and analyzed emphatically. The shear transfer of vertical members of different structural systems in the upper and lower floors of basement roof is discussed by using finite element analysis method. The main contents of this paper are as follows: 1. By reading a large number of existing documents and related engineering design materials, the problems in the structural design of high-rise building with basement are expounded, and the research direction of this paper is finally determined. At the same time, through the evaluation of the existing analytical methods and software, the analysis means and finite element software used in the follow-up analysis are determined. 2. On the basis of structural mechanics, the expression of shear force ratio between the position of elastic rod in the basement and the shear force in the first floor is derived, and the factors that may affect the expression are discussed. 3. The plane frame model is established, and the relationship between the shear force of the frame column in the basement position and the shear force in the first floor position is discussed. 4. The finite element models of shear wall structure, frame shear wall structure, frame-supported shear wall structure and frame-core tube structure are established and calculated by PKPM and ETABS. The horizontal shear transfer of the vertical members of each structural system in the upper and lower floors of the basement roof is analyzed. 5. The results of theoretical analysis and finite element analysis are evaluated, and the shear transfer law of vertical members in the upper and lower floors of basement roof is summarized, which provides a reference for practical engineering design.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973.2

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