摘要
通过几何缩尺比为1∶300的刚性模型,对高层开洞建筑进行了测压风洞试验。研究了C类地面粗糙度类别,16个来流风向条件下,两种不同开洞率和三种不同开洞位置以及二个全封闭模型的各表面风压分布特性,并绘制了风向平行于孔洞时模型外表面的风压系数等值线分布图。根据试验结果,对各种模型各个表面的平均风压系数、体型系数进行了计算。通过与数值风洞计算结果的对比及建筑荷载规范的比较,对建筑风荷载体型系数测试和取值方面的一些问题进行了初步的讨论,提出了建议,供进一步研究参考。
Using rigid models with a geometrical scale of 1 ： 300, the wind tunnel tests of tall buildings with opening are conducted under the velocity in site terrain roughness of category C. The wind pressure distribution character on every surface of models with two types of opening ratio and three different opening positions and two models without opening are measured in wind tunnel at sixteen different wind incidences. Contours of pressure coefficient distribution on model surfaces are plotted at the coming wind parallel to the hole. Based on the results of tests, area pressure coefficients and wind load shape coefficients of all surfaces of models are computed. According to the comparison of the results between computed by computing wind engineering （Fluent 6.0） and the tests including the comparison of the full occluded condition to load code for the design of building structures, some questions about measuring and choosing the building wind load shape coefficient are primitively discussed. Several suggestions are put forward to supply reference for the further study.
出处
《建筑结构》
CSCD
北大核心
2006年第2期86-90,共5页
Building Structure
关键词
开洞建筑
风洞试验
风压分布
风荷载体型系数
tall buildings with opening
wind tunnel test
wind pressure distribution
wind load shape coefficients
