本文選題：地鐵振動 + 砌體結(jié)構(gòu)��； 參考：《振動與沖擊》2014年06期

【摘要】：以上海某地鐵線路鄰近砌體結(jié)構(gòu)為研究對象,建立詳細數(shù)值模型。以樓外實測振動加速度為輸入激勵,實測室內(nèi)振動響應(yīng)校核模型參數(shù)。通過數(shù)值分析,研究振動隨樓層變化規(guī)律及同樓層內(nèi)不同樓板結(jié)構(gòu)、不同房間大小等因素對振動響應(yīng)分布規(guī)律影響。結(jié)果表明,列車經(jīng)過時較大跨度的室內(nèi)樓板中央豎向振級較樓板墻邊振級大1~3 dB;預(yù)制板房間豎向振動強度大于現(xiàn)澆板房間,預(yù)制板間灰縫處對振動強度有一定放大作用;房間進深參量對振動強度影響較小可忽略不計,進深與振動強度大小關(guān)系與進深尺寸及開間尺寸大小有關(guān);開間參數(shù)對豎向振動影響較大,開間越大,振動強度越大;振動強度與樓板角部及周邊約束情況關(guān)系密切。
[Abstract]:Taking the adjacent masonry structure of a subway line in Shanghai as the research object, a detailed numerical model is established. The measured vibration acceleration outside the building is taken as input excitation, and the model parameters of indoor vibration response are measured. Through numerical analysis, the effects of different floor structure and different room size on vibration response distribution are studied. The results show that the central vertical vibration level of the indoor floor slab with a long span is 1 ~ 3 dB larger than that of the floor wall, and the vertical vibration intensity of the prefabricated board room is greater than that of the cast-in-place slab room, and the cement joint between the prefabricated boards can enlarge the vibration intensity to a certain extent. The influence of room depth parameters on vibration intensity is negligible, the relationship between depth and vibration intensity is related to the size of the depth and the size of the open space, the influence of the parameters of the room on the vertical vibration is greater, and the greater the opening, the greater the vibration intensity. The vibration intensity is closely related to the corner and peripheral restraint of floor.
【作者單位】： 同濟大學建筑工程系;
【基金】：十一五國家科技支撐計劃項目資助(2006BAJ03A07-04)
【分類號】：U231;TU311.3;TU364

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