重载铁路长大下坡曲线段列车行车安全性分析

doi:10.16265/j.cnki.issn1003-3033.2022.06.1896

中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (6): 87-94.doi: 10.16265/j.cnki.issn1003-3033.2022.06.1896

重载铁路长大下坡曲线段列车行车安全性分析

温登钦¹(), 王飞², 时瑾³, 任舒静³

1 济青高速铁路有限公司,山东济南 250102
2 轨道交通工程信息化国家重点实验室(中铁一院),陕西西安 710043
3 北京交通大学土木建筑工程学院,北京 100044

收稿日期:2022-02-02 修回日期:2022-04-12 出版日期:2022-06-28 发布日期:2022-12-28
作者简介:
温登钦 (1977—),男,山东莱州人,本科,高级工程师,主要从事铁路项目工程管理工作。E-mail: 25082429@qq.com。
王飞,高级工程师
时瑾,教授
基金资助:
国家自然科学基金资助(52078035); 轨道交通工程信息化国家重点实验室(中铁一院)资助课题(院科20-09)

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

WEN Dengqin¹(), WANG Fei², SHI Jin³, REN Shujing³

1 Ji'nan Qingdao High Speed Railway Co., Ltd., Ji'nan Shandong 250102, China
2 State Key Laboratory of Rail Transit Engineering Informatization (FSDI), Xi'an Shaanxi 710043, China
3 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

Received:2022-02-02 Revised:2022-04-12 Online:2022-06-28 Published:2022-12-28

摘要/Abstract

摘要：

为保障重载铁路长大坡道曲线地段的行车安全,以车钩摆角、脱轨系数、轮轨横向力、轮重减载率、车轮表面疲劳指数、轮轨磨耗指数为评价指标,分析制动模式下长编组重载列车在该类地段的行车安全性能,建立列车-线路动力学模型,并基于实测数据进行模型验证。结果表明:当车钩力达最大时,列车不一定行驶在曲线地段;对于1+1编组列车,最大车钩力出现在中部机车处;对于2+0编组列车,当列车从距直缓点900 m的位置处开始制动时的最大车钩力达最大,最大车钩力出现在第62位车钩处;曲线半径应不小于1 200 m,困难条件下不小于1 000 m,缓和曲线长度应不小于150 m。

关键词: 重载铁路, 行车安全性能, 紧急制动, 长大下坡道, 曲线地段

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

温登钦, 王飞, 时瑾, 任舒静. 重载铁路长大下坡曲线段列车行车安全性分析[J]. 中国安全科学学报, 2022, 32(6): 87-94.

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.

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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

重载铁路长大下坡曲线段列车行车安全性分析

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

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