(深圳大學建筑設計研究院, 深圳 518060)
[摘要] 深圳火車北站為人群密集型大跨公共建筑，樓蓋梁最大跨度43m。針對大跨度樓蓋的振動舒適度問題，建立樓蓋整體有限元模型，以IABSE建議的單人步行激勵為基礎，考慮行人起步相位的隨機性，分別考慮了人跳躍、行走等最不利分析工況，通過多點輸入時程分析方法求得結構的加速度響應，對深圳北站樓蓋進行人行舒適度分析。并采用ATC給出的人行舒適度性能水準作為評價標準。計算結果表明深圳北站站房樓蓋具有適宜的剛度和舒適度。所采用的計算方法及控制標準可作為類似工程參考。
[關鍵詞]深圳北站站房;樓蓋舒適度;ATC;跳躍;行走
中圖分類號：TU318，TU375 文獻標識碼：A 文章編號：1002-848X(2013)S1-0277-04
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*國家自然科學基金項目(90715012)。
作者簡介：孟美莉, 本科，工學學士，教授級高級工程師，副總工程師，一級注冊結構工程師，Email：0755mml@163.com。
Meng Meili, Wu Bing, Fu Xueyi, Qu Jiaxing
( The Institute of Architecture Design & Research Shenzhen University, Shenzhen 518060, China)
Abstract：Station building of Shenzhen North Station was a crowding long-span public building. The largest span of floor system beam was 43m. The vibration comfort of large-span floor system is studied. A finite element model of a large-span floor is established. Based on the single walking force of IABSE (International Association of Bridge and Structural Engineer), a method is proposed considering the random distribution of persona's initial phase angle. And people jumping and walking were considered as the most disadvantageous cases. Then the vibration comfort of the bridge is analyzed by a multi-support excitation and time history analysis method. The comfort performance level is given according to ATC (Applied Technology Council). The results showed that the stiffness and comfort of station building floor system of Shenzhen North Station were suitable. The computing method adopted and evaluating standard could be considered as the reference for the similar projects.
Keywords: station building of Shenzhen North Station;floor system comfort; ATC; jumping; walking
