884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

李江寧1，張暉2，虞煒2

（1 同濟(jì)大學(xué)結(jié)構(gòu)工程與防災(zāi)研究所， 上海 200092； 2 上海建筑設(shè)計(jì)研究院有限公司， 上海200041）

 

［摘要］為研究采用豎向基礎(chǔ)隔振技術(shù)的建筑在地鐵激勵(lì)下的響應(yīng)，在上海地鐵某線路隧道正上方制作了一個(gè)兩層磚混結(jié)構(gòu)房屋模型，采用橡膠支座與疊層橡膠滑板支座并聯(lián)作為隔振層。建立了該房屋模型的有限元模型，通過不同型號(hào)和不同數(shù)量隔振支座的組合來改變隔振頻率，以不同隔振工況下的實(shí)測基底振動(dòng)加速度記錄為輸入激勵(lì)，計(jì)算了結(jié)構(gòu)在時(shí)域內(nèi)的響應(yīng)。將結(jié)構(gòu)的時(shí)域響應(yīng)轉(zhuǎn)換為振動(dòng)加速度級(jí)，評(píng)價(jià)了不同隔振頻率的隔振效果，并與實(shí)測結(jié)果進(jìn)行了比較。研究表明，建立的有限元模型能夠較真實(shí)地反映地鐵激勵(lì)下基礎(chǔ)隔振建筑物的振動(dòng)響應(yīng)，能夠?qū)Φ罔F激勵(lì)下擬建建筑的振動(dòng)進(jìn)行預(yù)測，為其隔振設(shè)計(jì)提供理論依據(jù)。

［關(guān)鍵詞］地鐵振動(dòng)； 基礎(chǔ)隔振； 有限元模型； 振動(dòng)加速度級(jí)

中圖分類號(hào)：TU352.1, TU317+.1      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2013)13-0027-04

 

Li Jiangning1, Zhang Hui2, Yu Wei2

 (1 Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China;  2 Shanghai Institute of Architectural Design & Research Co., Ltd., Shanghai 200041, China)

 

Abstract: To study the subway-induced vibration response of vertical base isolated structure, a two-story masonry model structure, equipped with rubber bearings and laminated rubber sliding bearings, was built above a subway tunnel in Shanghai. Finite element model of the structure was established. Different vibration isolation frequencies were obtained by using different types and different numbers of bearings. Time-domain vibration acceleration response of the model structure was obtained by the dynamic elastic finite element calculation of the model with the input acceleration which can be conveniently measured on the site ground. The vibration isolation performance was evaluated by converting the time-domain vibration acceleration response into vibration acceleration level. Calculated results were compared with the measurement results. Results show that the established finite element model can properly reflect the actual subway-induced building vibration and provide a basis for subway-induced vibration isolation design of buildings.

Keywords: Subway-induced vibration; base isolation; finite element model; vibration acceleration level

*上海市科學(xué)技術(shù)委員會(huì)科研項(xiàng)目（09dz1207800），上海市城鄉(xiāng)建設(shè)和交通委員會(huì)科研項(xiàng)目（重科2010-002）。

作者簡介：李江寧，碩士，Email: 1130568@#edu.cn。

 

［1］BALENDRA T, CHUA H, LO K W, et al. Steady-state vibration of subway-soil-building system［J］. Journal of Engineering Mechanics, 1989,115(1):145-162.

［2］洪俊青, 劉偉慶. 地鐵對(duì)周邊建筑物振動(dòng)影響分析［J］.振動(dòng)與沖擊, 2006,25(4):142-145.

［3］張暉，盛濤. 地鐵運(yùn)行誘發(fā)建筑物振動(dòng)的豎向基礎(chǔ)隔振現(xiàn)場模型試驗(yàn)分析［J］.建筑結(jié)構(gòu)，2013，43（13）：22-26.

［4］LAI CARLO G, CALLERIO ALBERTO, FACCIO LIEZIO, et al. Prediction of railway-induced ground vibrations in tunnels［J］. Journal of Vibration and Acoustics, 2005, 127: 503-514.

［5］王勖成,邵敏.有限單元法基本原理和數(shù)值方法［M］.北京:清華大學(xué)出版社,1997.

［6］王田友, 丁潔民, 樓夢(mèng)麟.關(guān)于軌道交通所致建筑振動(dòng)的計(jì)算方法和阻尼矩陣的討論［J］.振動(dòng)與沖擊,2008,27(11):77-79.

［7］王田友. 地鐵運(yùn)行所致環(huán)境振動(dòng)及建筑物隔振方法研究［D］.上海：同濟(jì)大學(xué),2008.

［8］GB/T 50355—2005住宅建筑室內(nèi)振動(dòng)限值及其測量方法標(biāo)準(zhǔn)［S］.北京:中國建筑工業(yè)出版社,2005.

［9］李守繼，樓夢(mèng)麟，丁潔民，等. 地鐵環(huán)境中房屋浮置地板隔振分析［J］.結(jié)構(gòu)工程師，2007,23(5)：10-14.

［10］DEGRANDE G, CLOUTEAU D, OTHMAN R, et al. Anumerical model for ground-borne vibrations from underground railway traffic based on a periodic finite element-boundary element formulation［J］.Journal of Sound and Vibration, 2006, 293(3-5): 645-666.