Abstract：Research purposes: This paper studies the operation security of the ballastless track further and accumulates data for researching the dynamics characteristics of the ballastless track subgrade-culvert transition. The MOR organized the comprehensive field test on Suining-Chongqing Railway ballasdess track.
Research conclusions: Since the multiple units has the characteristics of light axle load，good performances of vehicle vibration, the CA mortar dynamic stress of it is relatively smaller than that of the heavy haul freight train, and the dynamic role to the railway of the multiple units is relatively not significant. In comparison, the influence of the axle weight is larger than the speed. The axle weight and speed does not impact on the distribution rule of the transition dynamic stress in the direction of the railway line.
相颖慧，罗强，魏永幸. 遂渝铁路无砟轨道涵洞附近CA砂浆层 动应力测试分析[J]. 铁道工程学报, 2008, 25(6): 43-47.
XIANG Ying-hui，LUO Qiang，WEI Yong-xing. Test and Analysis of the Dynamic Stress of CA Mortar near Culvert on the Sui-Yu Ballastless Track Railway. 铁道工程学报, 2008, 25(6): 43-47.
2008, Vol. 25 
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