車速對車輛段上蓋物業(yè)振動影響的實測分析*
何蕾，宋瑞祥，鄔玉斌，劉金雨，吳丹
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(北京市勞動保護科學(xué)研究所， 北京 100054)
［摘要］以兩處已建車輛段為例，以現(xiàn)場實測數(shù)據(jù)為基礎(chǔ)，采用統(tǒng)計分析的方法分析了列車出入庫車速對車輛段上蓋敏感建筑的振動影響，并將分析結(jié)果與常規(guī)預(yù)測模型的計算結(jié)果進行比較。結(jié)果顯示，庫內(nèi)線和咽喉區(qū)上蓋建筑室內(nèi)振動隨正下方線路列車出入庫車速提高而增大，其中建筑首層室內(nèi)振動增大尤其明顯；在一定車速區(qū)間范圍內(nèi)，中間層室內(nèi)振動的增大值與預(yù)測模型所計算的修正值相近；頂層室內(nèi)振動變化較小，這與車速增大時較高頻率的振動被激發(fā)有關(guān)，因而限制車輛段列車出入庫車速對緩解上蓋建筑室內(nèi)振動影響尤為必要。［關(guān)鍵詞］車輛段; 上蓋物業(yè); 室內(nèi)振動; 車速; 現(xiàn)場實測中圖分類號：TU311.3 文獻標識碼：A 文章編號：1002-848X(2015)19-0096-04
Analysis on actual measurement of train speed influence on the vibration of over-track buildings of metro-depotHe Lei, Song Ruixiang, Wu Yubin, Liu Jinyu, Wu Dan(Beijing Municipal Institute of Labor Protection, Beijing 100054, China)Abstract: Based on the field actual measured data of two built metro-depots, the influence of the train speeds into and out of the depot on the vibration of the sensitive over-track building of metro-depot was analyzed by the statistical analysis method, and the analysis results were compared with that of the conventional prediction model. The results show that the indoor vibration of the buildings upon the garage inner track and throat area increases with the increase of speeds of underneath train into and out of the depot. The increase of indoor vibration of first floor in the building is particularly evident. In a certain speed range, the increasing value of indoor vibration of the middle story is close to the vibration correction value calculated by the prediction model, and the change of indoor vibration of the top story is smaller, which is related to the excitation of higher frequency vibration when train speed increases. It is necessary to limit the train speeds into and out of the depot to the relief of the impact on the indoor vibration for superstructure building.Keywords: metro-depot; overtrack building; indoor vibration; train speed; field actual measurement
*高振動環(huán)境區(qū)域建筑振動和噪聲測試能力建設(shè)（PXM2014_178304_000005_00132840）。作者簡介：何蕾，博士，助理研究員，Email：helei06@126.com。
