【摘要】 以广东省大学生运动会体育场为工程背景，通过风洞试验测量了主看台上伞形薄膜屋盖的表面风压，根据试验数据计算了屋盖所受风力及力矩，分析了屋益表面风压分布特点和所受风力及力矩随风向角的变化规律．试验结果表明，伞形薄膜屋盖的升力及其力矩起控制作用，大小取决于表面负压，而屋盖迎风仰角和跨度大小对表面负压有很大影响．试验结果可以为该类屋盖风荷载设计提供依据或参考．更多还原

【Abstract】 The wind pressure acting upon the umbrella-shaped film roofing above the grandstand at the stadium for Guangdong Provincial University Students Sports Meet was measured during wind tunnel tests. Based on the experimental data, the wind force on and the torques of the roofing were calculated, and the distribution features of the wind pressure at the surface of the roofing were analyzed. And the laws governing the changes in the wind force on and the torques of the roofing along with changes in angles of wind direction were also analyzed. Results obtained show that the elevation force of the umbrella-shaped film roofing and its torques play the controlling role, depending upon the value of the surface negative pressure, whereas the values of the windward elevation angle of the roofing exercise great influences upon the value of the surface negative pressure. It is thought that this may serve as a reference for wind load design in similar types of roofing.更多还原