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以列车运行时的轨道-地基系统为对象,将轨道-地基系统简化为半无限地基及成层地基上的弹性地基梁模型,基于离散波数法推导了轨道和地基土的位移函数计算公式,并考虑了轨道和地基协同作用时的影响。比较了轨道、荷载自振频率、荷载移动速度、地基土模型等不同因素对地基土变形的影响,得到了一些有益的结论。
Taking the track-foundation system of train operation as an object, the simplified track-foundation system is the elastic foundation beam model on semi-infinite foundation and stratified foundation, and the displacement function formula of the track and foundation soil is derived based on the discrete wavenumber method The effect of the synergy between the track and the foundation is considered. The influences of different factors such as orbit, natural frequency of load, load moving speed and foundation soil model on the deformation of foundation soil are compared, and some useful conclusions are obtained.