摘要
依据某超高层建筑,着重介绍了风洞试验的方法,描述了在考虑有、无环境建筑影响下,该高层建筑一些典型的表面风压特性以及一些测点风压随风向角的变化规律。结果表明:迎风面中上部风压系数较大,接近1.0;底部部分风压系数达到1.0;侧风面和背风面风压系数大多为负值,特别是靠近角落处由于涡旋脱落,其值可达到-2。环境建筑对该高层建筑表面风压的影响较大,特别在建筑中下部。为其进行结构设计提出一些参考。
Taking an example of a super high-rise building,the wind tunnel test was introduced.The typical characteristics of the surface wind pressure and the variation rules of the wind pressure were described according to the wind direction under the condition of surrounding buildings being considered or not.The results show that the wind pressure is bigger in the top of the windward,approaching to 1.0,it is smaller in the bottom,about 1.0 and it becomes negative in the crosswind and lee side,especially in the corner nearby where the vortex falls off,with a value close to-2.The surface wind pressure on the high-rise building is greatly influenced by the surrounding buildings,which is especially obvious in the lower part of it.Suggestions are given to the design of this kind of structures.
出处
《建筑结构》
CSCD
北大核心
2011年第1期131-134,共4页
Building Structure
基金
国家自然科学基金(90715024)
关键词
高层建筑
表面风压
风洞试验
high-rise building
surface wind pressure
wind tunnel test
