Analysis on Dynamic Response of High-speed Railway Caused by Traffic Load
Based on the reconstruction and expansion engineering of Shijiazhuang-Taiyuan High-speed Railway,the dynamic response of high-speed railway caused by traffic load is analyzed deeply by finite element model.By studying the influence of train speed increase on the vertical dynamic stress and vertical dynamic displacement of each part of the subgrade and embankment,the influence of train speed and depth on dynamic response is revealed.The results show that with the increase of train speed,the dynamic stress and deformation change on the soil increase gradually.However,when the train speed is less than 250 km/h,the increase of dynamic stress and deformation change is small.The greater the depth,the greater the attenuation rate,while the faster the train speed,the smaller the attenuation rate.
traffic loadhigh-speed railwaydynamic responsefinite element modelamplitude curve
NETL
NSTL
万方数据
