摘要
以苏州中心展开长度近630m的异形曲面钢屋面为背景,对数值风洞在结构风荷载设计和风环境分析中的运用进行了探讨。采用数值风洞对屋面结构在不同风向角下的风荷载特性进行了数值模拟分析,计算得到上部结构表面的风压系数与物理风洞试验结果吻合较好;基于分析结果采用时域法对屋面进行了风致振动响应分析,并对屋面结构周围行人高度处风环境进行了模拟评估。最后,分析了数值风洞和物理风洞两者之间的差异,提出了数值风洞模拟的改进方法和思路。
The applications of the numerical wind tunnel in the structural wind load design and wind environment analysis were discussed based on the background of the 630m-long special-shaped curved surface steel roof of Suzhou Center. The numerical wind tunnel was used to carry out the numerical simulation analysis on wind load characteristics for the roof structure under different wind angles. The calculated wind pressure coefficient of the surface of the upper part structure and physical wind tunnel test result are in good agreement. Based on the analysis results,time domain method was used to carry out the wind-induced vibration response analysis on the roof structure,and the wind environment at the height of pedestrians around the roof structure was simulated and evaluated. At last,the differences between the numerical wind tunnel and the physical wind tunnel were analyzed,and the improving methods and ideas of the numerical wind tunnel simulation were presented.
出处
《建筑结构》
CSCD
北大核心
2015年第14期65-71,共7页
Building Structure
关键词
苏州中心
大跨屋面
计算流体动力学
风振响应
风环境
Suzhou Center
large-span roof
computational fluid dynamics
wind vibration
wind environment
