某空旷大跨度体育场馆的建模分析

针对体育场馆类空旷大跨度结构的设计特点,运用有限元程序,对某公司文化体育中心结构的整体受力性能、薄弱部位及大跨度网架屋盖对主体结构受力性能的影响与协同工作等问题进行了模拟分析.计算表明,此类结构具有扭转不规则性,薄弱部位常出现在空旷结构部位和弱连接部位;空旷框架部分存在相对变形大的现象.由于框架柱缺乏有效约束,其计算长度较大,P-△效应明显;网架屋盖在水平力及地震作用下对主体结构有不可忽视的作用,应考虑网架屋盖与下部框架结构的协同工作.实际设计中可考虑将网架部分按照一定的规则等代为钢梁,来近似考虑网架的刚度进行整体设计.

A finite element analysis for a large-span open stadium structure

A simulation analysis was done for a large-span open stadium structure using a finite element software,in which the load-bearing capability and weak locations of the stadium structure were considered,and the effects of the mesh-roof of the stadium on the load-bearing performance of the stadium's main structure elaborated.It was shown that the structure had an irregularity in torsion,the weak locations usually occurred in the open structure and at the weakly joined locations,and big deformations mostly took ...