Safety analysis of train operation in long downhill curve sections of heavy haul railways

doi:10.16265/j.cnki.issn1003-3033.2022.06.1896

Abstract

Abstract:

In order to ensure operation safety of heavy haul railways in long ramp curve sections, safety performance of long marshalling heavy haul trains in such sections under braking mode was studied with coupler swing angle, derailment coefficient, wheel rail lateral force, wheel load reduction rate, wheel surface fatigue index and wheel rail wear index as evaluation indicators. And a train-line dynamic model was established and verified based on measured data. The results show that when coupler force reaches the maximum, the train may not be in curve sections. For 1+1 marshalling trains, the maximum coupler force appears at the part of central locomotive. However, for the case of 2+0 trains, when it starts braking 900 m away from the intersection of line and spiral, the maximum coupler force reaches the maximum value, which occurs at the 62^nd coupler. Moreover, the curve radius shall not be less than 1 200 m, or no less than 1 000 m under difficult conditions, while length of transition curve no less than 150 m.

Key words: heavy haul railway, operation safety performance, emergency braking, long and large downhill, curve section

WEN Dengqin, WANG Fei, SHI Jin, REN Shujing. Safety analysis of train operation in long downhill curve sections of heavy haul railways[J]. China Safety Science Journal, 2022, 32(6): 87-94.

Figures/Tables 12

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Tab.1

Fig.9

Fig.10

Fig.11

References 16

[1]	CHANG Chongyi, GUO Gang, WANG Junbiao, et al. Study on longitudinal force simulation of heavy-haul train[J]. Vehicle System Dynamics, 2017, 55(4): 571-582. doi: 10.1080/00423114.2016.1269183
[2]	常崇义, 马颖明, 郭刚, 等. 超长重载列车纵向力影响规律仿真研究[J]. 中国铁道科学, 2021, 42(1): 87-94.
	CHANG Chongyi, MA Yingming, GUO Gang, et al. Simulation study on the influence of longitudinal force on super long heavy haul trains[J]. China Railway Science, 2021, 42(1): 87-94.
[3]	COLE C, SPIRYAGIN M, WU Qing, et al. Modelling, simulation and applications of longitudinal train dynamics[J]. Vehicle System Dynamics, 2017, 55(10): 1498-1571. doi: 10.1080/00423114.2017.1330484
[4]	池茂儒, 张卫华, 曾京, 等. 长大列车动力学建模的一种新方法[J]. 铁道车辆, 2007, 45(3): 1-4.
	CHI Maoru, ZHANG Weihua, ZENG Jing, et al. A new method to set up dynamics model for long and big trains[J]. Rolling Stock, 2007, 45(3): 1-4.
[5]	王开云, 翟婉明. 纵向压力作用下重载机车与轨道的动态相互作用[J]. 西南交通大学学报, 2009, 44(1): 7-12.
	WANG Kaiyun, ZHAI Wanming. Dynamic interaction between heavy locomotive and track under longitudinal force of coupler[J]. Journal of Southwest Jiaotong University, 2009, 44(1): 7-12.
[6]	杨敏, 王开云, 纪天成. 车钩间隙对重载列车纵向冲击动力学的影响[J]. 交通运输工程与信息学报, 2018, 16(2): 80-85.
	YANG Min, WANG Kaiyun, JI Tiancheng. Effects of coupler slack on the longitudinal impulse of heavy haul train[J]. Journal of Transportation Engineering and Information, 2018, 16(2): 80-85.
[7]	张志春. 变坡点对列车纵向冲动的影响分析[J]. 铁道运输与经济, 2017, 39(增1): 94-99, 104.
	ZHANG Zhichun. Analysis on the impact of grade change point to longitudinal impulse of the train[J]. Railway Transport and Economy, 2017, 39(Z1): 94-99, 104.
[8]	STOKŁOSA J, JAŚKIEWICZ M. Simulation study of longitudinal forces in the coupling device of heavy freight trains[J]. Advances in Science & Technology-Research Journal, 2014, 8(Z1): 24-30.
[9]	PETRENKO V. Simulation of railway vehicle dynamics in universal mechanism software[J]. Procedia Engineering, 2016, 134(1): 23-29. doi: 10.1016/j.proeng.2016.01.033
[10]	徐浩, 李培刚, 王平, 等. 单元板式轨道扣件刚度突变对行车安全性的影响分析[J]. 中国安全科学学报, 2012, 22(3): 134-139.
	XU Hao, LI Peigang, WANG Ping, et al. Analysis of impact of mutation of unit slab track fastener stiffness on train running safe[J]. China Safety Science Journal, 2012, 22(3): 134-139.
[11]	贾剑青, 贾超, 赖远明, 等. 高速铁路路基加固效果及稳定性分析[J]. 中国安全科学学报, 2020, 30(6): 50-56. doi: 10.16265/j.cnki.issn1003-3033.2020.06.008
	JIA Jianqing, JIA Chao, LAI Yuanming, et al. Reinforcement effect and stability analysis of high speed railway roadbed[J]. China Safety Science Journal, 2020, 30(6): 50-56. doi: 10.16265/j.cnki.issn1003-3033.2020.06.008
[12]	陈树礼, 柳墩利, 田波, 等. 重载铁路水冲受损桥墩组合加固技术[J]. 中国安全科学学报, 2020, 30(1): 42-47. doi: 10.16265/j.cnki.issn1003-3033.2020.01.007
	CHEN Shuli, LIU Dunli, TIAN Bo, et al. Combined reinforcement technology for water scour damaged piers of heavy-haul railway[J]. China Safety Science Journal, 2020, 30(1): 42-47. doi: 10.16265/j.cnki.issn1003-3033.2020.01.007
[13]	武承龙, 董昱. 基于改进的Newmark-β法重载列车车钩纵向力仿真研究[J]. 铁道科学与工程学报, 2021, 18(1): 211-219.
	WU Chenglong, DONG Yu. Simulation research on the longitudinal force of heavy haul train coupler based on the improved Newmark-β method[J]. Journal of Railway Science and Engineering, 2021, 18(1): 211-219.
[14]	饶忠. 列车牵引计算[M]. 北京: 中国铁道出版社, 2012: 47.
[15]	蒋立干. 不同操作模式下重载列车长大下坡道曲线地段行车性能分析[D]. 北京: 北京交通大学, 2017.
	JIANG Ligan. Analysis on the operation performance of heavy haul trains under different operating modes[D]. Beijing: Beijing Jiaotong University, 2017.
[16]	徐倩, 王悦明, 倪纯双. 重载列车纵向冲动分布试验研究[J]. 中国铁道科学, 2013, 34(4): 77-83.
	XU Qian, WANG Yueming, NI Chunshuang. Test study on the longitudinal impulse distribution of heavy haul train[J]. China Railway Science, 2013, 34(4): 77-83.

运行状态		轮轨垂向力/ kN	轮轨横向力/ kN	轮重减载率	脱轨系数	磨耗指数/N	表面疲劳指数
惰行运行	1+1 编组	134.72	27.82	0.123	0.285	127.38	0.093
惰行运行	2+0 编组	125.33	18.70	0.124	0.155	111.28	0.029
紧急制动	1+1 编组	139.32	31.20	0.131	0.312	312.22	0.108
紧急制动	2+0 编组	126.79	22.67	0.138	0.183	176.74	0.048
增长率/ %	1+1 编组	3.41	12.15	6.5	9.47	145.11	16.13
增长率/ %	2+0 编组	1.16	21.23	11.29	18.06	58.82	65.52