漏斗结构平移模型下房屋龙卷风荷载的分析

Analysis on house tornado load under transitional model of funnel structure

基于龙卷风的漏斗结构模型以及Rankine涡平移模型的理论,对房屋进行漏斗结构平移模型下的龙卷风荷载分析,得出较Rankine涡平面模型更为真实的房屋龙卷风荷载,对房屋的风吸力及扭转荷载作用力进行了分析,得出风吸力的大小随龙卷风的高度而变化,对低矮房屋的作用力最大。

Based on the theories of funnel structure model of tornado and Rankine vortex transitional model, this paper analyzes house tornado load under transitional model of funnel structure, and achieves realer house tornado load comparing to Rankine vortex surface model, and analyzes wind suction and reversing load reaction of houses, and concludes that wind suction degree changes with the tornado height, which has the most effect for low houses.