关富玲  石卫华  马永前
    (浙江大学土木系  杭州 310027)

[提要]  膜结构在体育场屋顶或者看台挑篷中有着广泛的应用。由于膜结构在风荷载作用下有向上掀的倾向，再加上张力膜需要提供预应力，给膜支撑结构设计带来了很多特殊性。以杭州下沙的某体育场膜结构挑篷设计、分析为依托，探讨几种方案的优劣，为今后进一步研究和设计提供了有益的结论。
[关键词]  膜结构  体育场  大悬挑屋盖结构

Membrane structures are widely used in stadium roof with large cantilevered canopy. For membrane structure has tendency of moving upwards under wind load, and the supporting structures must provide prestress force for tension membrane, which bring a lot of particularity to the design of supporting structures. Based on design and analysis of membrane structure of a stadium cantilevered canopy in HangZhou, we have researched several projects, and some useful conclusions are drawn for further research and design.
Keywords: membrane structure; stadium; large cantilevered roof structures