随着地铁运营线路的不断增加,以及人们对生活环境质量的日益关注,地铁沿线居民的振动投诉问题越来越普遍.在地铁线路分期建设时,由于上下行轨道类型的差异以及各期车辆服役状态的不同,沿线环境经常会出现振动问题.文章在某线路分期建设的背景下开展现场振动测试研究,并对实测数据进行深入分析,包括振动加速度时域指标、频谱特性以及隧道壁 Z 振级等.研究结果表明,远轨减振措施不足和部分列车状态不良是产生振动过大的主要原因.文章可以为后续地铁线路分期建设提供借鉴,同时为减振设计提供参考,减少振动扰民问题的发生.
Test,research,and discussion on the effect of the phased construction of metros on environmental vibration along railway lines
As urban rail transit lines continue to expand and residents'concerns about the quality of their living environment grow,complaints regarding vibrations from urban rail transit systems are becoming more and more frequent.During the phased construction of metro lines,vibration issues often arise along the tracks due to the differences in the types of tracks upstream and downstream,as well as variations in the service states of trains during each phase.This article conducts on-site vibration tests within the context of the phased construction of metro lines and performs a thorough analysis of the measured data.This includes an examination of the time domain indexes for vibration acceleration,spectral characteristics,and Z-vibration level of tunnel walls.The research results show that the main causes of excessive vibrations are insufficient measures being taken to reduce the vibrations of far-off tracks and the poor state of certain trains.This article could serve as a reference for the phased construction of the upcoming metro line,while also offering insights into vibration reduction designs to reduce the occurrence of vibration nuisances.
万方数据
维普
