东部沿海某钢结构写字楼抗侧力方案比较研究

发布时间：2018-05-29 20:36

本文选题：钢结构 + 高层建筑　；参考：《河北工程大学》2013年硕士论文

【摘要】：随着我国经济发展和人民生活水平提高，高层建筑开始全国各地大量兴建。面对高层和超高层的挑战，传统的钢筋混凝土结构已不能满足结构高度与空间布局等方面的要求。而钢结构体系因为其自身的强度高、延性好、自重轻等因素，已经被越来越广泛的应用到高层建筑结构。高层建筑中横向荷载起主要控制作用，其周期长、自身阻尼比小，所以对横向荷载也较为敏感。由于我国东部沿海地区的风荷载较高，地震作用与风荷载均为主要的侧向力不容忽视，因此，本文以东部沿海某钢框架写字楼为实例对抗侧力方案进行研究。本文首先对国内外钢结构抗侧力体系的研究状况进行了调查，展望了东部沿海城市中钢结构的发展潜力。在现有钢框架的基础上提出了中心支撑、偏心支撑、核心筒等各种方案，，并对各种抗侧方案的优缺点、受力情况与设计需要满足的基本要求进行了比较分析。以东部沿海某高层钢结构写字楼为实例，在钢框架的基础上布置各抗侧力体系，由软件分析得到相应的控制参数，讨论了影响东部沿海钢结构写字楼的结构选型的几种影响因素。本文针对东部沿海城市中的某实际案例进行了PKPM建模分析，并进行SATWE计算，全面分析不同抗侧力方案的自震周期、位移、剪重比、刚重比等控制参数，比较了在不同结构体系下建筑的整体性能，通过对比分析，得出了一些具有应用价值的结论，为东部沿海高层钢结构的抗侧力方案的选型提供参考依据。
[Abstract]:With the development of economy and the improvement of people's living standard, high-rise buildings have been built all over the country. The traditional reinforced concrete structure can not meet the requirements of the height and spatial layout of the structure in the face of the challenges of the high-rise and super-high buildings. Because of its high strength, good ductility, light weight and other factors, steel structure system has been more and more widely used in high-rise building structure. The lateral load plays a major controlling role in high-rise buildings, its cycle is long and its damping ratio is small, so it is also sensitive to lateral load. Because of the high wind load in the eastern coastal area of China, the earthquake action and wind load are the main lateral forces that can not be ignored. Therefore, this paper takes a steel frame office building in the east coast as an example to study the scheme of counteracting lateral force. In this paper, the research status of steel structures against lateral force at home and abroad is investigated, and the development potential of steel structures in eastern coastal cities is prospected. On the basis of the existing steel frame, various schemes such as center bracing, eccentric bracing, core tube and so on are put forward. The advantages and disadvantages of various anti-side schemes, the stress situation and the basic requirements of the design are compared and analyzed. Taking a high-rise steel structure office building in the east coast as an example, each lateral force system is arranged on the basis of steel frame, and the corresponding control parameters are obtained by software analysis. Several factors affecting the structural selection of steel office buildings along the eastern coast are discussed. In this paper, PKPM modeling analysis is carried out for a practical case in the eastern coastal city, and SATWE calculation is carried out. The control parameters such as self-seismic period, displacement, shear weight ratio and rigid-weight ratio of different anti-lateral force schemes are comprehensively analyzed. This paper compares the overall performance of buildings under different structural systems and draws some valuable conclusions through comparative analysis, which provides a reference for the selection of lateral force resistance schemes for high-rise steel structures in the east coast.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU391

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