地铁交通对某实验楼的环境振动的模拟分析

The simulation analysis on vibration of a laboratory building induced by urban subway transit

在地铁隧道附近,对于环境振动要求较高的特殊建筑物和精密仪器,地铁列车走行时引起的振动影响不容忽视。基于动力反应分析理论,通过建立有限元模型,并以实际测得的列车走行时地铁和轻轨在路基附近的加速度波形作为振动输入,模拟分析了正在规划修建的北京地铁8号线开通后将对附近某实验大楼内仪器可能造成的振动影响,同时对实验楼附近地铁振动的衰减规律进行了初步分析,为实验楼和仪器台是否应采取避振措施提供了参考依据。

Nearby subway tunnel,the vibration impact induced by subway transit on the precision instruments and the special buildings can not be ignored,which are sensitive to the environmental vibration.In this paper,based on the dynamic response analysis theory,the finite element model the special building is established,and the actual measured acceleration waves in the roadbed nearby the subway and light rail,which are induced by running train,are used as the vibration input,during constructing Beijing 8th line sub...