铁道科学与工程学报2018，Vol.15Issue(7)：1631-1640,10.DOI:10.19713/j.cnki.43-1423/u.2018.07.001
道床板上拱对高速列车-双块式无砟轨道系统振动响应影响
Influence of vibration response of high-speed train and double-block ballastless track system due to slab-upwarp
摘要
Abstract
In order to study the influence of slab-upwarp on the running stability of train and the performance of ballastless track structure, a damage model of double-block ballastless track and high-speed train system with slab-upwarp was established, and the calculation program of the model was compiled and verified by FORTRAN. Then, the spatial vibration response of four types of double-block ballastless track with slab-upwarp under high-speed train was calculated on the basis of the analysis theory of spatial vibration of high-speed train and ballastless track system, respectively. The influence law of different type of slab-upwarp, track irregularity amplitude and speed on the dynamic response of the system was analyzed and compared, and the damage ratings of the slab-upwarp was also analyzed. It is shown that the dynamic responses of the system with different type of slab-upwarp increase with the growth of running speed and track irregularity amplitude. The system response of slab-upwarp considering both complex track irregularity and void is the largest at the same speed, while that of slab-upwarp only considering vertical track irregularity is the lowest. For example, the maximum value of vehicle vertical acceleration, wheel-rail force, and derailment coefficient and wheel load reduction rate induced by the 1st type of slab-upwarp (A=11 mm, v=300 km/h) is 0.918 m/s2,100.740 kN, 0.305, 0.255, respectively; while those due to the 4th type of slab-upwarp are order of 2.037m/s2, 185.219 kN, 12.503, 1.727. The mechanism and data above should be provided a reference of damage rating for slab-upwarp.关键词
高速铁路/双块式无砟轨道/道床板/上拱/伤损评级/高速列车Key words
high speed railway/double-block ballastless track/slab/upwarp/damage rating/high-speed train分类
交通工程引用本文复制引用
余翠英,向俊,毛建红..道床板上拱对高速列车-双块式无砟轨道系统振动响应影响[J].铁道科学与工程学报,2018,15(7):1631-1640,10.基金项目
国家自然科学基金委员会与神华集团有限公司联合资助项目(U1261113) （U1261113）
高等学校博士学科点专项科研基金资助项目(20100162110022) （20100162110022）
牵引动力国家重点实验室开放课题资助项目(TPL0901,TPL1214) （TPL0901,TPL1214）
江西省教育厅科技资助项目(GJJ151173,GJJ151175) （GJJ151173,GJJ151175）
