Effect of CA mortar disengagement on Dynamic characteristics of Slab Ballastless Track on Subgrade

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Shi, Hui^1,2 ; Zhu, Liqiang^1,2 ; Shi, Hongmei^1,2 ; Yu, Zujun^1,2

School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing

100044, China^1

Key Laboratory of Vehicle Advanced Manufacturing, Measuring and Control Technology, Beijing Jiaotong University, Ministry of Education, Beijing

100044, China^2

关键词: Ballastless slab tracks;    Cement asphalt mortars;    Coupling systems;    ON dynamics;    Slab ballastless track;    Track systems;    Vehicle system;    Wheel rail force;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/2/022116/pdf
DOI  :  10.1088/1757-899X/452/2/022116

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

According to the improved model of the vehicle-ballastless slab track-subgrade coupling system, the effects of cement asphalt mortar (CA) disengagement on dynamic characteristics of vehicle and track are analysed. The results show that when the CA mortar longitudinal disengagement length exceeds 0.65m and the horizontal disengagement degree exceeds 0.5, the maximum and minimum of wheel-rail force, the maximum of the displacement of track system change obviously with the increase of CA mortar disengagement length. The effect of CA mortar disengagement on track system is larger than the vehicle system. The CA mortar disengagement should be repaired timely.