(深圳大學(xué)建筑設(shè)計(jì)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(duì)大跨度樓蓋的振動(dòng)舒適度問(wèn)題，建立樓蓋整體有限元模型，以IABSE建議的單人步行激勵(lì)為基礎(chǔ)，考慮行人起步相位的隨機(jī)性，分別考慮了人跳躍、行走等最不利分析工況，通過(guò)多點(diǎn)輸入時(shí)程分析方法求得結(jié)構(gòu)的加速度響應(yīng)，對(duì)深圳北站樓蓋進(jìn)行人行舒適度分析。并采用ATC給出的人行舒適度性能水準(zhǔn)作為評(píng)價(jià)標(biāo)準(zhǔn)。計(jì)算結(jié)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(jì)算方法及控制標(biāo)準(zhǔn)可作為類似工程參考。
[關(guān)鍵詞]深圳北站站房;樓蓋舒適度;ATC;跳躍;行走
中圖分類號(hào)：TU318，TU375 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)S1-0277-04
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*國(guó)家自然科學(xué)基金項(xiàng)目(90715012)。
作者簡(jiǎn)介：孟美莉, 本科，工學(xué)學(xué)士，教授級(jí)高級(jí)工程師，副總工程師，一級(jí)注冊(cè)結(jié)構(gòu)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
