论文部分内容阅读
针对饱和地基上列车运行引起的地面振动问题,利用列车-轨道有限元模型计算得到轨道与路基间的相互作用力,经傅立叶变换后作为地面振动计算的激励荷载;在此基础上,结合由薄层法得到的饱和地基动力G reen函数,对饱和地基上列车行驶条件下所产生的地面振动进行了计算分析和振动评价.结果表明:列车车速在一定范围内对振动有较大影响;列车引起的地面振动在近轨道处基本能够满足住宅区振动标准.
Aiming at the problem of ground vibration caused by train operation on saturated ground, the interaction between track and subgrade is calculated by using train-orbit finite element model and the excitation load is calculated by Fourier transform as ground vibration. On this basis, The ground-based vibration of saturated ground under the condition of train running on saturated ground is calculated and evaluated by the method of G reen function of saturated ground. The results show that: the train speed has a greater impact on the vibration within a certain range; The ground vibration near the track can basically meet the residential vibration standards.