大型体育场膜结构静力风荷载特性与响应分析

结合某大型体育场膜结构挑篷的风洞试验研究,对挑篷膜面的风荷载特性和典型膜面的静力风荷载响应进行了详尽的分析.试验结果分析表明,挑篷前缘膜面的负压风荷载数值最大,是膜面抗风设计的控制荷载.静力风荷载响应分析中考虑了膜面的初始预张力、抗风索、拱距以及拱的矢跨比对膜面抗风性能的影响,从中获得了对这类结构设计有益的结论.

Characteristic of Wind Load and Static Wind Effects Analysis of Membrane Structure Canopy Roof of Large-Scale Stadium

Based on wind tunnel investigation of the membrane structure canopy roof of a Stadium, a study is conducted on the characteristic of wind load on the roof and the static wind effect of the typical membrane canopy. Wind tunnel test result shows that the negative wind load action on the leading edge of the canopy roof is the largest, which is the dominating load for the membrane structure canopy. Furthermore, an analysis is also made of the effects of initial prestress of the membrane, wind resistant cable,distance between arches and the ratio of arch height to span on the wind resistant performance of membrane structure canopy. The conclusion in this paper might be used as reference for this kind of structures.