平板网架与下部支承结构整体工作分析研究

发布时间：2018-04-02 12:30

本文选题：平板网架结构　切入点：整体稳定性　出处：《西安建筑科技大学》2010年硕士论文

【摘要】： 网架结构具有受力合理、体型优美、空间体积利用率高等优点,广泛应用于体育馆、会展中心、影剧院、机场候机厅等公共建筑结构中。平板网架结构一般为混合结构体系,即屋盖结构形式为钢管网架体系,而下部支承结构形式为混凝土框架结构、剪力墙结构或者钢框架结构。限于结构设计软件功能的不足,通常将上部网架与下部支承结构分开单独进行结构设计,与实际结构的受力有很大的差别,致使部分构件的设计偏于保守,而部分构件的设计偏于不安全. 本论文结合兰州某大学平板网架结构体育馆这一具体工程实例,采用有限元分析软件进行整体建模,系统地从整体稳定性、温差作用和结构抗震性能三个方面分析了上部平板网架与下部支承结构的整体工作性能,并与上部平板网架结构单独建模的工作性能进行了对比分析,此外还分析了水平地震作用下上部网架不同简化方法对下部支承结构内力的影响。计算结果显示不同分析模型得到的数据各不相同,有些数据差异较大,从中得出了一些较为合理的设计建议,为以后同类工程的设计分析提供了一定的参考。
[Abstract]:The space truss structure has the advantages of reasonable force, beautiful shape and high utilization ratio of space volume. It is widely used in public buildings such as gymnasium, convention and exhibition center, cinema and theater, airport terminal and so on.The slab truss structure is generally a hybrid structure system, that is, the roof structure is a steel tube grid structure, while the lower supporting structure is a concrete frame structure, a shear wall structure or a steel frame structure.Limited to the deficiency of the function of the structure design software, the upper space frame and the lower supporting structure are usually separately designed separately, which is very different from the actual structure, and the design of some members is conservative.The design of some components is unsafe.This paper combined with the concrete engineering example of the flat grid structure gymnasium of a university in Lanzhou, adopted the finite element analysis software to carry on the overall modeling, systematically from the overall stability,Three aspects of temperature difference and seismic performance of the structure are analyzed, and the working performance of the upper plate grid structure and the lower supporting structure is analyzed, and the working performance of the upper plate grid structure is compared with that of the upper plate grid structure.In addition, the influence of different simplified methods of upper truss on the internal force of the lower support structure under horizontal earthquake is analyzed.The results show that the data obtained from different analysis models are different, and some of the data are quite different. Some reasonable design suggestions are obtained from them, which provide a certain reference for the design and analysis of similar projects in the future.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：TU356

【引证文献】