双层集装箱重车重心高度对运行安全性的影响

郎茂祥; 彭永昭; 刘春启

doi:10.19818/j.cnki.1671-1637.2010.06.007

双层集装箱重车重心高度对运行安全性的影响

doi: 10.19818/j.cnki.1671-1637.2010.06.007

1.
北京交通大学交通运输学院, 北京 100044
2.
江苏地华实业集团有限公司, 江苏南京 210041

基金项目:

国家自然科学基金项目 60870014

详细信息

作者简介:
郎茂祥(1969-), 男, 山东高唐人, 北京交通大学教授, 工学博士, 从事现代货物运输技术与管理研究

中图分类号: U292.926
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出版历程
- 收稿日期: 2010-06-25
- 刊出日期: 2010-12-25

Influence of gravity center height on running safety of loaded double-stack container car

1.
School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China
2.
Jiangsu Dihua Industrial Group Co., Ltd., Nanjing 210041, Jiangsu, China

Article Text (Baidu Translation)

摘要

摘要: 根据多刚体动力学理论, 运用SIMPACK仿真软件分别建立了一定装载工况和运行工况下双层集装箱车辆的单车动力学仿真模型和四车动力学仿真模型。基于铁路车辆运行安全评价指标及其标准, 将模型仿真结果与双层集装箱列车实际运行试验的结果进行了对比分析, 研究了重车重心高度与运行安全性的关系, 给出了合理的双层集装箱重车重心限制高度。仿真结果表明: 随着双层集装箱重车重心高度的增大, 轮轴横向力、轮重减载率与脱轨系数增大, 最先达到安全限度的是脱轨系数; 在最不利装载工况下, 安全的重车重心高度限值为2 480 mm。
- 双层集装箱车辆 /
- 运行安全性 /
- 重车重心高度 /
- 脱轨系数 /
- 轮重减载率
Abstract: According to the system dynamics of rigid bodys, the dynamics simulation models of single-vehicle and four-vehicle double-stack container cars under certain loading and running conditions were established by SIMPACK. Based on the evaluating criterias and indexes of railway train running safety, the simulation result was compared with experiment data. The relationship between the height of loaded car's gravity center and the running safety of double-stack container car was analyzed, and the reasonable height of gravity center was presented. Simulation result indicates that lateral wheelset force, wheel unloading rate and derailment coefficient increase with the increase of the height, and derailment coefficient firstly reaches its limit value. The limit value of the height is 2 480 mm under the most unfavorable loading condition.
- double-stack container car /
- running safety /
- height of loaded car's gravity center /
- derailment coefficient /
- wheel unloading rate

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图 1 单车模型

Figure 1. Single-vehicle model

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图 2 四车模型

Figure 2. Four-vehicle model

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图 3 重心无偏移时的运行指标变化曲线

Figure 3. Dynamic index change curves without deviation of gravity center

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图 4 重心横向偏移100 mm时运行指标变化曲线

Figure 4. Dynamic index change curves with lateral deviation of 100 mm for gravity center

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图 5 重心纵横向均偏移时运行指标变化曲线

Figure 5. Dynamic index change curves with lognitudinal and transverse deviations of gravity center

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表 1 车辆组成部件及自由度

Table 1. Vehicle components and degrees of freedom

部件名称	轮对	承载鞍	侧架	摇枕	车体
数量	4	8	4	2	1
自由度	4×6	8×1	4×6	2×2	1×6

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表 2 装载工况

Table 2. Loading conditions

装载工况	箱货总重心横向偏移量/mm	两转向架负载差/t	箱货总质量/t	重车质量/t	重车重心高度/mm
1	0	0	78	100	2 100
2	0	0	78	100	2 200
3	0	0	78	100	2 300
4	0	0	78	100	2 400
5	0	0	78	100	2 500
6	0	0	78	100	2 600
7	100	0	78	100	2 100
8	100	0	78	100	2 200
9	100	0	78	100	2 300
10	100	0	78	100	2 400
11	100	0	78	100	2 500
12	100	0	78	100	2 600
13	100	10	68	90	2 100
14	100	10	68	90	2 200
15	100	10	68	90	2 300
16	100	10	68	90	2 400
17	100	10	68	90	2 500
18	100	10	68	90	2 600

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表 3 运行参数

Table 3. Running parameters

曲线半径/m	直线长度/m	缓和曲线长度/m	圆曲线长度/m	外轨超高/mm	欠超高/mm
600	150	130	150	120	25
1 000	200	150	200	137	30
1 600	300	200	400	150	35

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表 4 动力学性能对比

Table 4. Comparison of dynamics performances

模型	指标
模型	脱轨系数	轮重减载率	轮轴横向力/kN
四车模型(直线)	0.901	0.594	77.463
四车模型(曲线)	0.953	0.611	88.431
单车模型	0.900	0.601	75.492

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表 5 试验装载方案

Table 5. Experiment loading conditions

车辆	重车重心高度/mm	箱货总重心横向偏移量/mm	两转向架负载差/t	箱货总质量/t	重车质量/t
1	2 300	100	0	78	100
2	2 300	100	10	68	90
3	2 400	100	0	78	100
4	2 400	100	10	68	90

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表 6 结果比较

Table 6. Comparison of results

动力学指标	仿真结果		试验结果
动力学指标	单车模型	四车模型	试验结果
脱轨系数	1.051	0.953	1.113
轮重减载率	0.572	0.613	0.553
轮轴横向力/kN	74.321	88.432	71.312

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表 7 不同重心高度下的运行指标

Table 7. Running indices under different heights of gravity center

重车重心高度/mm	脱轨系数	轮重减载率	轮轴横向力/kN
2 400	1.121	0.610	89.632
2 420	1.143	0.615	90.120
2 440	1.160	0.634	90.351
2 460	1.169	0.641	92.462
2 480	1.200	0.645	92.131
2 500	1.210	0.652	93.263

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