高层筒悬挑轻钢结构及有限元分析

发布时间：2019-01-21 21:37

【摘要】：近几十年来,中国经济高速发展,城镇化建设逐渐加快,居民用地紧缺与土地使用金昂贵之间的矛盾日益加剧,结构设计师都在尝试寻找更好的结构形式来缓解这两者之间的矛盾。轻钢龙骨结构作为一种新型结构形式开始逐步应用于多高层建筑中,并表现出了结构质量轻,抗震性能好,制作安装简便等一系列优点。本文研究的是一种新型结构体系——高层筒悬挑轻钢结构,这种结构体系是由角钢龙骨结构与核心筒结构通过钢桁架挑梁相连接而构成。论文结合一工程实例——沈阳某22层框架-核心筒办公楼,在不改变结构布局和平面尺寸的前提下,将结构形式改为高层筒悬挑轻钢结构,并通过有限元分析软件SAP2000对高层筒悬挑轻钢结构进行研究,最后将分析结果与原框筒结构进行对比,研究高层筒悬挑轻钢结构的可行性和适用性。论文主要研究内容如下： (1)介绍高层筒悬挑轻钢结构及角钢龙骨结构的做法和优点； (2)运用SAP2000建立框筒模型和高层筒悬挑轻钢模型,分别从风荷载作用、水平地震作用和竖向地震作用三个方面分析结构的位移和变形,研究高层筒悬挑轻钢结构的结构性能和可行性； (3)利用SAP2000软件对独立三层角钢龙骨结构进行分析,研究其在风荷载和水平地震荷载作用下的位移和变形； (4)对比高层筒悬挑轻钢结构中的角钢龙骨结构与独立三层角钢龙骨结构在风荷载和水平地震荷载作用下的位移及变形,研究角钢龙骨结构在高层筒悬挑轻钢结构中的性能表现,并提出改进方案。本文的研究成果为高层筒悬挑轻钢结构及角钢龙骨结构的设计和研究提供一些理论参考和依据。
[Abstract]:In recent decades, with the rapid development of China's economy, the construction of urbanization has been gradually accelerated, and the contradiction between the shortage of residential land and the high cost of land use has been intensifying day by day. Structural designers are trying to find better forms of structure to ease the conflict between the two. As a new type of structure, light steel keel structure has been gradually applied to many high-rise buildings, and has shown a series of advantages, such as light weight, good seismic performance, easy fabrication and installation, and so on. In this paper, a new type of structural system-tall tubular cantilever light steel structure is studied. The structure system is composed of angle steel keel structure and core tube structure connected by steel truss cantilever beam. Combining with an engineering example, a 22-story frame and core tube office building in Shenyang, without changing the structure layout and plane size, the structure form is changed to a high-rise tube cantilever light steel structure. The finite element analysis software SAP2000 is used to study the high rise tube cantilever light steel structure. Finally, the analysis results are compared with the original frame tube structure to study the feasibility and applicability of the high-rise tube cantilever light steel structure. The main contents of this paper are as follows: (1) the methods and advantages of tall tubular cantilever light steel structure and angle steel keel structure are introduced. (2) the frame-tube model and high-rise cantilever light steel model are established by using SAP2000. The displacement and deformation of the structure are analyzed from three aspects: wind load, horizontal earthquake and vertical earthquake, respectively. The structural properties and feasibility of tall tubular cantilever light steel structure are studied. (3) using SAP2000 software to analyze the independent three-story angle steel keel structure, and study its displacement and deformation under the action of wind load and horizontal earthquake load; (4) compare the displacement and deformation of angle steel keel structure and independent three layer angle steel keel structure under wind load and horizontal earthquake load. The performance of angle steel keel structure in tall tubular cantilever light steel structure was studied and the improvement scheme was put forward. The research results of this paper provide some theoretical reference and basis for the design and research of tall tubular cantilever light steel structure and angle steel keel structure.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973.13

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