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(1浙江大學(xué)建筑工程學(xué)院 杭州 310027；2浙江省建筑設(shè)計(jì)研究院 杭州 310006)
【提要】 采用時(shí)程分析方法，在有限元建模的基礎(chǔ)上，直接采用風(fēng)洞試驗(yàn)的數(shù)據(jù)，以臺(tái)州市體育中心為例，計(jì)算了大跨網(wǎng)架屋蓋結(jié)構(gòu)的豎向位移風(fēng)振系數(shù)。計(jì)算表明，采用的方法準(zhǔn)確、有效，從計(jì)算結(jié)果中得出了一些大跨屋面位移風(fēng)振系數(shù)變化的規(guī)律。
【關(guān)鍵詞】大跨網(wǎng)架屋蓋結(jié)構(gòu) 有限元 時(shí)程分析 風(fēng)振系數(shù) 風(fēng)洞試驗(yàn)
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