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中文摘要：
基于高速列车-板式无碴轨道时变系统竖向振动分析理论,研究了车速、轨道几何不平顺幅值、CA砂浆刚度及阻尼等动力学参数对此系统竖向振动响应的影响规律。在此基础上,进一步得出了合理的CA砂浆刚度取值范围。研究结果表明：高速列车-板式无碴轨道系统竖向振动响应均随车速及轨道几何不平顺幅值的增大而增大;合理的CA砂浆刚度取值范围为1.0～1.5 GPa/m;CA砂浆阻尼应尽可能取较大值,有利于降低轨道板的振动,延长板式无碴轨道结构的使用寿命。
英文摘要：
The influence of dynamic parameters such as speed, vertical profile irregularity of track, and stiffness and damping of cement asphalt mortar （CA mortar） on vertical vibration of high-speed train and slab track system was studied based on the analysis theory of vertical vibration of the system. The selection range of reasonable stiffness of the CA mortar was obtained. The results show that with the increase of speed and track irregularity amplitude, the responses of vertical vibration of the system increase. The selection range of reasonable stiffness of the CA mortar is 1.0-1.5 GPa/m. The bigger damping value of the CA mortar should be selected to decrease the vibration and extend the cycle life of the slab track.
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