体育场环状悬挑屋盖脉动风压数值模拟  

Numerical Simulation of Fluctuating Wind Pressure on Annular Cantilevered Roofs of Stadium

作　　者：汪丛军[1] 黄本才[1] 徐晓明[2] 林高[2] 

机构地区：[1]同济大学 固体力学教育部重点实验室,上海200092 [2]上海建筑设计研究院有限公司,上海200041

出　　处：《力学季刊》2005年第4期700-707,共8页Chinese Quarterly of Mechanics

摘　　要：本文提出了预测悬挑屋盖上脉动风压的实用方法,用数值模拟中稳态计算得到的平均压力、平均速度和湍动能的分布计算大跨屋盖的脉动风压。以昆山体育场为例,通过数值模拟的平均压力系数、湍动能分布及脉动风压与风洞实验结果的比较,验证了用数值模拟方法预测环状悬挑屋盖脉动风压的有效性,并建议了需选用的合适湍流模型和参考点的风速。A practical method was presented to predict fluctuating wind pressure on annular cantilevered roofs of stadium. Root mean square （r. m. s. ） pressures could be quickly estimated from the calculated mean pressures, mean velocities and turbulence kinetic energy. The method was applied to Kunshan stadium. The results of mean and r. m.s. pressures calculated by numerical simulation were shown to be in good agreement with the wind tunnel experimental data and gave confidence for future cantilevered roofs simulations. Advices were proposed to choose the proper turbulence models and the velocity on tile reference point.

关 键 词：数值模拟 悬挑屋盖 平均风压 脉动风压 湍动能 

分 类 号：TU312.1[建筑科学—结构工程]