建筑结构学报2012，Vol.33Issue(3)：104-110,7.
龙卷风风场模型及风荷载研究
Study on tornado model and tornado-induced wind loads
汤卓 1张源 1吕令毅1
作者信息
- 1. 东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京210096
- 折叠
摘要
Abstract
Pressure distributions and wind-induced responses of a large-span roof in tornadoes were studied. The impact of very high speed winds and the effect of the pressure drop when a building was hit by a tornado were investigated. Based on this, a calculating method for tornado-induced loads on closed structures was presented. The pressure coefficients on a large-span roof were obtained by CFD simulations. The wind-induced responses of the large- span roof were investigated using the time history analysis method. The numerical results show that the attack of F3 tornado lasts only 15 s. The maximum displacements reaches 2. 57 m, which is much larger than 0. 48 m, the standard limit of 1/250 of the span.关键词
龙卷风风场模型/龙卷风荷载/封闭结构/气动响应Key words
tornado model/tornado-induced wind loads/closed structure/aerodynamic response分类
建筑与水利引用本文复制引用
汤卓,张源,吕令毅..龙卷风风场模型及风荷载研究[J].建筑结构学报,2012,33(3):104-110,7.
