（同济大学土木工程防灾国家级重点实验室， 上海 200092）

［摘要］干煤棚具有跨度大、质量轻、阻尼小、刚度小、表面钝体绕流特征明显等特点，是一种典型的风敏感结构。因此，风荷载是结构设计的控制性荷载之一。以某两端半敞口干煤棚工程为背景，进行了有无干扰存在的风洞刚性模型测压试验。对干煤棚结构表面的平均风压分布与沿横轴方向的位移响应特征进行了研究。研究发现，干扰结构的遮挡效应能减小试验结构受到的风荷载作用与结构沿横轴方向的位移响应。

［关键词］干煤棚； 风洞试验； 风压系数； 位移响应； 干扰效应

中图分类号： TU317+.1 文献标识码： A文章编号：  1002-848X(2016)S1-0969-05

Interference effect analysis of surface wind pressure and response of dry-coal shed

Wang Xin

(State key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)

Abstract: Light weight, small damping, small stiffness are the characteristics of dry-coal shed, which is a kind of typical wind-sensitive structure. Therefore, wind loading is one of the controlling loads in the structure design. Based on a dry-coal shed project, of which both ends are half exposed, wind tunnel test for the rigid model were conducted to study interference effects on wind pressure. The average wind pressure distribution on the surface of the dry-coal shed and characteristics of axial displacement response in transverse direction are studied. It is found that the shelter effect of interference structure can reduce the wind load and displacement response in transverse direction of the test structure.

Keyword: dry-coal shed； wind tunnel test； wind pressure coefficient； displacement response； interference effect