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针对双块式无碴轨道结构特点,提出一种新的双块式无碴轨道空间振动分析模型,进一步建立高速列车—双块式无碴轨道系统空间振动分析方法。然后,基于列车脱轨能量随机分析理论,对高速列车—双块式无碴轨道系统横向振动稳定性及高速列车是否脱轨进行了评判。计算结果表明:高速列车以300 km/h速度在双块式无碴轨道上运行时,车轨系统横向振动是稳定的,列车不会脱轨,且具有n=2.143的抗脱轨安全系数。
Aiming at the structural characteristics of double-block ballastless track, a new model of double-block ballastless track vibration analysis is proposed to further establish the spatial vibration analysis method of high-speed train-double block ballastless track system. Then, based on the stochastic analysis theory of train derailment energy, the lateral stability of high-speed train-double block ballastless track system and the derailment of high-speed train are evaluated. The calculation results show that the transverse vibration of the track system is stable when the high-speed train travels on the double-block ballastless track with the speed of 300 km / h, and the train will not derail with a safety factor of n = 2.143.