摘要
针对大跨度悬挑屋盖结构风荷载特征的复杂性,进行了缩尺比为1:100的某体育场刚性模型风洞试验研究,得到了屋面结构上平均及脉动风压分布系数、同一测压点上下表面脉动风压相关系数以及不同距离测压点上脉动风压的相干函数,分析了同步和异步测量对计算结果造成的差别。通过对比体育场屋盖上离体育馆较近的测点与其他处测点的风压特性,评估体育馆对体育场风荷载的影响程度,为结构的抗风设计提供了依据。
Considering the complicated wind load on the surface of a large-span cantilevered roof of the stadium,the wind tunnel test on a rigid stadium model with 1：100 scale was carried out.Based on the calculation and analysis of the experiment results,the mean wind pressure factors,the correlativity of between up and down surfaces and the coherence function between the fluctuating wind pressures of different distances were discussed.The results difference between the synchronous and asynchronous measure was analyzed.By comparing the wind load characteristics of the pressure taps near the gymnasium with the others,the influence degree of the gymnasium was estimated,which can be used for the wind resistant design.
出处
《建筑结构》
CSCD
北大核心
2012年第2期154-159,共6页
Building Structure
基金
国家自然科学基金(50708118)
关键词
悬挑屋盖
风压系数
干扰效应
相关系数
相干函数
cantilevered roof
wind pressure coefficient
interference effect
correlation coefficient
coherence function
