多高层轻钢结构体系的抗震性能分析研究

发布时间：2018-11-26 13:59

【摘要】：多高层轻钢结构体系结构新颖、自重轻、受力性能好且便于施工,经济效益高,是一种节能环保型的新型建筑结构形式。然而我国的钢结构建筑起步比较晚,特别是多高层轻钢结构的发展相对落后,还处于探索阶段,缺乏相关的技术和人才,国外先进的技术和经验也很难直接适用于我国。目前,我国关于多高层轻钢结构的规范还很不全面,在多高层轻钢结构建筑抗震性能方面的研究还很少。通过本文的研究为多高层轻钢结构的抗震设计提供一些建议。本文从抗震性能方面出发研究多高层轻钢结构体系,采用和普通钢框架-支撑结构体系进行对比的研究方式。主要有以下几个方面的内容:1.介绍了多高层轻钢结构体系的特点,国内外钢结构建筑的发展历史及现状,钢结构建筑常见的几种结构形式及其特点。多高层轻钢结构体系的构件采用轻钢楼板和墙板,并将结构的支撑设置于轻钢墙板,它即有框架-支撑结构体系的性能优点,又提高了结构的工业化生产程度,能够大大加快施工进度。2.介绍了钢结构建筑的抗震分析理论的发展过程,从静力理论、动力理论到基于性态的抗震设计理论三个阶段,建筑结构抗震设计的基本方法。阐述了SAP2000有限元软件的特点和pushover分析法的基本理论。3.以某15层钢结构为例,利用SAP2000有限元分析软件分别建立了多高层轻钢结构体系和普通钢框架-支撑结构两种模型,进行模态分析、反应谱分析和线性时程分析,得到两种结构的自振周期、顶层位移、层间位移、最大加速度等不同的地震响应。然后对多高层轻钢结构进行Pushover分析,考虑四种分析工况下,对结构进行多遇和罕遇地震作用分析,得到多高层轻钢结构顶点位移、底部剪力和塑性铰分布,得出多高层轻钢结构在抗震能力多方面的评价。最终得出多高层轻钢结构体系的抗震性能满足规范要求,综合效益较高。
[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.
【学位授予单位】：安徽建筑大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU352.11;TU391

【相似文献】