(1 重庆大学土木工程学院，重庆 400045；2 山地城镇建设与新技术教育部重点实验室，重庆 400045；3 湖南省建筑设计院，长沙 410011）
［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。
［关键词］悬挑屋盖；风压系数；干扰效应；相关系数；相干函数
中图分类号：TU312+1文献标识码：A文章编号：1002-848X(2012)02-0154-06
Investigation on wind load characteristics of the large-span cantilevered roof of a stadium with interference
Zhang Zhaohui1,2，Chen Zhaohui1,2，Chen Feng 3，Sun Yi1,2(1 College of Civil Engineering, Chongqing University, Chongqing 400045, China; 2 Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing 400045, China；3 Hunan Provincial Architectural Design Institute, Changsha 410011, China)
Abstract: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.
Keywords:cantilevered roof; wind pressure coefficient; interference effect; correlation coefficient; coherence function
*国家自然科学基金（50708118）。
通迅作者：陈朝晖，教授，博士生导师，Email：zhaohuic@cqu.edu.cn。
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