车速对车辆段上盖物业振动影响的实测分析*
- 摘 要
-
(北京市劳动保护科学研究所， 北京 100054)
［摘要］以两处已建车辆段为例，以现场实测数据为基础，采用统计分析的方法分析了列车出入库车速对车辆段上盖敏感建筑的振动影响，并将分析结果与常规预测模型的计算结果进行比较。结果显示，库内线和咽喉区上盖建筑室内振动随正下方线路列车出入库车速提高而增大，其中建筑首层室内振动增大尤其明显；在一定车速区间范围内，中间层室内振动的增大值与预测模型所计算的修正值相近；顶层室内振动变化较小，这与车速增大时较高频率的振动被激发有关，因而限制车辆段列车出入库车速对缓解上盖建筑室内振动影响尤为必要。［关键词］车辆段; 上盖物业; 室内振动; 车速; 现场实测中图分类号：TU311.3 文献标识码：A 文章编号：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
*高振动环境区域建筑振动和噪声测试能力建设（PXM2014_178304_000005_00132840）。作者简介：何蕾，博士，助理研究员，Email：helei06@126.com。
