广西柳州奇石博物馆钢屋盖结构及整体结构分析

发布时间：2018-05-30 17:28

本文选题：大跨结构 + 弦支结构　；参考：《天津大学》2010年硕士论文

【摘要】：随着国家建设加快和人民生活水平日益增长,大跨度结构已广泛应用于体育场馆、会展中心和多功能厅等公共建筑,其技术水平是一个国家建筑技术水平的重要标志。由于大跨结构跨度较大,受力情况复杂,且工程中可能会出现各种各样的问题。因此,国内外已有不少学者对大跨结构开展了深入的研究。本文即以广西柳州奇石博物馆为背景,对结构性能进行分析,为以后该种结构形式的工程设计提供参照。本文首先对工程的屋盖钢结构部分进行了静力性能及稳定性能的分析,其中静力分析包括研究钢屋盖的位移、支座反力及杆件应力等,稳定分析包括对钢屋盖进行线性屈曲分析和考虑了几何初始缺陷及几何非线性的非线性屈曲分析。其次,研究了温度作用对钢屋盖受力情况的影响;论述了整个工程中的局部弦支结构对屋盖结构的影响,包括静力和稳定两方面;总结了弦支结构相对于相同情况的无弦支结构的特点与优势。然后,研究了结构中屋盖与混凝土连接的部分中选择不同的单元类型,即桁架单元和梁单元两种单元对屋盖结构的静力、稳定以及抗震方面的影响,并对钢屋盖与下部结构协同工作时的静力情况进行分析。此外,文中还对单独的钢屋盖结构与考虑下部混凝土结构协同工作的整体结构两种模型的受力性能进行了对比,讨论了自振模态、位移、反力、抗震等方面的不同及差异产生原因等。
[Abstract]:With the acceleration of national construction and the increasing living standards of the people, the long-span structure has been widely used in public buildings such as stadiums, exhibition centers and multi-function halls. Its technical level is an important symbol of the technical level of a country's architecture. Because the span of long span is long and the stress is complicated, various problems may appear in engineering. Therefore, many scholars at home and abroad have carried out in-depth research on long span structures. Based on the background of Qishi Museum in Liuzhou, Guangxi, this paper analyzes the structural properties and provides a reference for the engineering design of this kind of structure in the future. In this paper, the static and stability properties of the steel structure of the roof are analyzed firstly. The static analysis includes the study of the displacement of the steel roof, the reaction force of the bearing and the stress of the member. The stability analysis includes linear buckling analysis of steel roof and nonlinear buckling analysis considering geometric initial defects and geometric nonlinearity. Secondly, the influence of temperature on the stress of steel roof is studied, and the influence of the local chord support structure on the roof structure is discussed, including static and stable aspects. The characteristics and advantages of chord-supported structures compared with those without chord-supported structures in the same situation are summarized. Then, the influence of truss element and beam element on the static, stability and earthquake resistance of roof structure is studied. The static condition of steel roof and substructure working together is analyzed. In addition, the paper compares the mechanical behavior of the single steel roof structure with that of the whole structure considering the cooperative work of the lower concrete structure, and discusses the natural vibration mode, displacement, reaction force. Earthquake resistance and other aspects of the difference and the cause of the difference and so on.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TU391

【参考文献】