多高層輕鋼結(jié)構(gòu)體系的抗震性能分析研究
[Abstract]:Multi-high-rise light steel structure is a new type of energy saving and environmental protection structure with novel structure, light weight, good mechanical performance, easy construction and high economic benefit. However, the construction of steel structure in our country starts relatively late, especially the development of multi-high-rise light steel structure is relatively backward, is still in the exploratory stage, lacks of relevant technology and talents, and foreign advanced technology and experience are difficult to directly apply to our country. At present, the code of light steel structure is not comprehensive in our country, and there are few researches on seismic performance of light steel structure building. The research in this paper provides some suggestions for the seismic design of multi-high-rise light steel structures. From the aspect of seismic behavior, this paper studies the light steel structure system of multiple tall buildings, which is compared with the ordinary steel frame-braced structure system. The main contents are as follows: 1. This paper introduces the characteristics of multi-high-rise light steel structure system, the development history and present situation of steel structure building at home and abroad, and several common structural forms and characteristics of steel structure building. The light steel floor and wall slab are used for the components of the multi-storey light steel structure system, and the support of the structure is arranged on the light steel wall board. It has the advantages of the performance of the frame-bracing structure system and improves the industrial production degree of the structure. Can greatly speed up the progress of construction. 2. This paper introduces the development process of seismic analysis theory of steel structure, from three stages: static theory, dynamic theory to seismic design theory based on behavior, and the basic method of seismic design of building structure. The characteristics of SAP2000 finite element software and the basic theory of pushover analysis are expounded. Taking a 15-story steel structure as an example, two kinds of models of light steel structure system and steel frame-braced structure are established by using SAP2000 finite element analysis software. Modal analysis, response spectrum analysis and linear time history analysis are carried out. Different seismic responses such as the displacement of the top floor the displacement of the floor and the maximum acceleration of the two structures are obtained. Then the Pushover analysis is carried out on the light steel structure of multiple tall buildings. Considering four kinds of analysis conditions, the peak displacement, shear force and plastic hinge distribution at the bottom of the light steel structure are obtained by the analysis of the frequent and rare earthquake action of the structure. The evaluation of multi-high-rise light steel structure in many aspects of seismic capacity is obtained. Finally, it is concluded that the seismic performance of light steel structure system meets the requirements of code, and the comprehensive benefit is high.
【學(xué)位授予單位】:安徽建筑大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2016
【分類號(hào)】:TU352.11;TU391
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