(1浙江大学建筑工程学院 杭州 310027；2浙江省建筑设计研究院 杭州 310006)
【提要】 采用时程分析方法，在有限元建模的基础上，直接采用风洞试验的数据，以台州市体育中心为例，计算了大跨网架屋盖结构的竖向位移风振系数。计算表明，采用的方法准确、有效，从计算结果中得出了一些大跨屋面位移风振系数变化的规律。
【关键词】大跨网架屋盖结构 有限元 时程分析 风振系数 风洞试验
Calculation of Dynamic Windload Factor of Longspan Grid Roof/Wang Heng1,Sun Bingnan2,Lou Wenjuan2,Shen Guohui1,Lin Shuming2,Jin Kun2(1 Zhejiang University,Hangzhou 310027,China;2 Zhejiang Institute of Architectural Design &Research, Hangzhou 310006,China)
Abstract:Based on FEM and the data obtained from the wind tunnel test,the equivalent wind
load factors of a longspan grid roof are calculated.The results indicate that the time history analysis method is rational and effective.Furthermore,several conclusions on the characteristics of the dynamic windload factor are drawn.
Keywords:longspan grid roof; FEM; time history analysis method; dynamic wind load factor; wind tunnel test