大跨度张弦梁结构受力性能分析与施工过程控制研究

发布时间：2018-02-20 22:39

本文关键词： 张弦梁结构受力特性预应力优化施工过程控制指标　出处：《重庆交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：近年来,随着我国经济建设的需求和人们生活水平的提高,建筑结构越来越向着高层、大空间、大跨度方向发展,如国家体育馆,上海浦东国际机场候机楼,广州国际会议展览中心,深圳会议展览中心,南京国际博览中心等投资使用,都体现大跨度钢结构已成为建筑结构中最重要与最活跃的发展领域之一。张弦梁结构具有结构简单,传力明确,施工方便快捷和建筑造型与结构布置能完美结合等优势,更受建筑师的青睐。但是目前对张弦梁结构理论研究,尤其是结构受力分析与施工过程相结合的系统分析落后于实际工程应用,因此,有必要对此进一步加以分析和研究,提出更为合理的设计、施工和优化方法,在此基础上可以建造技术先进、经济合理、安全适用的大跨度张弦梁结构。为此本文是以广东省珠海市某学校体育馆屋盖(张弦桁架结构)为工程背景,综合分析张弦桁架结构静力和地震荷载作用下受力特性,从预应力优化提出对张弦梁改进方案,同时还进行了施工全过程仿真模拟,提出施工过程控制指标。本文主要研究内容和得出结论如下： ①通过收集、整理张弦梁结构资料,运用SAP2000计算分析软件对实际模型进行合理简化,并建立多个工况下的模型,为后续计算做准备； ②运用SAP2000计算分析软件,对张弦梁结构进行静力和地震荷载作用下受力特性分析,得出风荷载对结构是有利的和地震作用对该张弦桁架设计不起控制作用相关结论； ③查阅相关资料,计算分析张弦桁架结构,确定预应力合理取值,并对张弦桁架的拉索预应力优化； ④从控制张弦梁结构高度来改进预应力张弦梁,并考虑结构整体稳定性； ⑤对该工程结构选取相应的施工方案,并对其施工全过程模拟分析,重点分析拉索张拉过程和吊装过程,提出施工过程控制指标；希望本文的研究成果能对张弦梁结构设计、施工过程计算控制提供有用的帮助。
[Abstract]:In recent years, with the demand of our country's economic construction and the improvement of people's living standard, the building structure is developing more and more in the direction of tall building, large space and long span, such as the National Stadium, the terminal building of Shanghai Pudong International Airport. Guangzhou International Convention and Exhibition Center, Shenzhen Convention and Exhibition Center, Nanjing International Expo Center, etc. Both show that long span steel structure has become one of the most important and active development fields in building structure. Beam string structure has the advantages of simple structure, clear transmission of force, convenient construction and perfect combination of architectural modeling and structural arrangement, etc. More favored by architects. But at present, the theoretical study of beam string structure, especially the systematic analysis of structural stress analysis and construction process, lags behind the actual engineering application. Therefore, it is necessary to further analyze and study this, and put forward a more reasonable design. On the basis of the construction and optimization methods, the long-span beam string structure with advanced technology, reasonable economy, safety and applicability can be constructed. This paper takes the roof of a school gymnasium (Zhang Xian truss structure) in Zhuhai City, Guangdong Province as the engineering background. Based on the comprehensive analysis of the static and seismic load characteristics of Zhang Xian truss structure, the improvement scheme of beam string is put forward from the point of prestress optimization. At the same time, the simulation of the whole construction process is also carried out. The main contents and conclusions of this paper are as follows:. 1 through collecting and arranging the structure data of beam string, using SAP2000 calculation and analysis software to simplify the actual model reasonably, and set up the model under many working conditions, so as to prepare for the subsequent calculation; (2) by using the software of SAP2000 calculation and analysis, the static and seismic load characteristics of the beam string structure are analyzed, and the conclusion is drawn that the wind load is beneficial to the structure and that the seismic action can not control the design of the Zhang Xian truss. (3) consult the relevant data, calculate and analyze Zhang Xian truss structure, determine the reasonable value of prestress, and optimize the cable prestress of Zhang Xian truss; (4) improving the prestressed beam string by controlling the height of the beam string structure, and considering the overall stability of the structure; (5) selecting the corresponding construction scheme for the structure of the project, and simulating the whole construction process, focusing on the analysis of the process of cable tension and hoisting, and putting forward the control index of the construction process; It is hoped that the research results of this paper can provide useful help for the design of beam string structure and the calculation control of construction process.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU399;TU74

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