接触网弹性吊索参数对弓网动态性能影响

关金发; 田志军; 张学武

doi:10.3969/j.issn.0258-2724.20190326

接触网弹性吊索参数对弓网动态性能影响

doi: 10.3969/j.issn.0258-2724.20190326

关金发^1,2,,
田志军^1, ,,
张学武¹

基金项目: 国家重点研发计划（2018YFC0808706）；国家自然科学基金（U1534209））

详细信息

作者简介:
关金发（1986—），男，讲师，博士，研究方向为受电弓与接触网动态仿真与测试，E-mail：kwanjinfa@163.com

通讯作者:
田志军（1963—），男，教授级高工，硕士，研究方向为接触网工程设计，E-mail：917879649@qq.com

中图分类号: N225.3
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- 文章访问数: 506
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- 被引次数: 0
出版历程
- 收稿日期: 2019-04-30
- 修回日期: 2019-09-09
- 网络出版日期: 2019-09-24
- 刊出日期: 2021-06-15

Influence of Catenary Stitch Wire Parameters on Dynamic Performance Between Pantograph and Catenary

GUAN Jinfa^{1,2
,},
TIAN Zhijun^{1
, ,},
ZHANG Xuewu¹

摘要

摘要: 为确定不同速度等级接触网弹性吊索参数的优选值，利用有限单元法，建立了中国高速铁路250、350 km/h两种速度等级的受电弓、接触网和弓网接触的动力学仿真模型，得到受电弓与接触网的动态性能指标，比较双弓作用下不同接触网弹性吊索截面积、张力和长度的弓网接触力数字特征和接触网定位点最大抬升. 研究结果表明：适应250 km/h的O2-1型接触网弹性吊索宜选用线型为JTMH 35 mm²、张力范围为(2.80 ± 0.10) kN，长度为14 m或18 m；适应350 km/h的京沪高速铁路接触网弹性吊索宜选用线型为JTMH 35 mm²、张力范围为(3.50 ± 0.10) kN，长度为18 m；弹性吊索参数变化对前弓的接触力影响较小，对后弓的接触力影响显著；250 km/h和350 km/h下弹性吊索长度22 m的定位点最大抬升分别是长度18 m的111%和117%，弹性吊索长度的变化对定位点最大抬升影响显著.
- 接触网 /
- 受电弓 /
- 弹性吊索 /
- 接触力 /
- 抬升
Abstract: In order to determine the optimal design values of the catenary stitch wire at different speed levels, the dynamic simulation models of pantograph, catenary and pantograph-catenary contact have been established by finite element method, which correspond to the speed levels of 250 and 350 km/h for Chinese high-speed railways. The dynamic performance indexes of pantograph and catenary, such as the section area, statistics of contact force and the maximum uplift at supporting points have been obtained and compared, with different cross-sectional areas, tensions and length of the stitch wire under double pantographs. The results show that for the parameters of the stitch wire on O2-1 catenary, JTMH 35 mm² cross-section, (2.80 ± 0.10) kN tension and 14 m or 18 m length at 250 km/h should be chosen; for the parameters of stitch wire on Beijing−Shanghai high-speed catenary, JTMH 35 mm² cross-section, (3.50 ± 0.10) kN tension and 18m length at 350 km/h. The change of stitch wire parameters has little influence on the contact force of the anterior pantograph, but has a significant effect on that of the posterior pantograph. The maximum uplift at supporting points with the stitch wire length of 22 m is 111% at 250 km/h and 117% at 350 km/h of the stitch wire length of 18 m, which means that the change of stitch wire length has a significant impact on the maximum uplift.
- catenary /
- pantograph /
- stitch wire /
- contact force /
- uplift

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图 1 受电弓三质量块归算模型

Figure 1. Three-mass model of pantographs

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图 2 接触网仿真模型

Figure 2. Catenary simulation model

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图 3 弓网接触模型

Figure 3. Pantograph-catenary contact model

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图 4 250 km/h和350 km/h速度等级接触悬挂弹性曲线

Figure 4. Elastic curves of contact suspension at 250 km/h and 350 km/h

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图 5 250 km/h等级接触网接触力

Figure 5. Catenary contact force at 250 km/h

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图 6 350 km/h等级接触网接触力

Figure 6. Catenary contact force at 350 km/h

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图 7 不同弹性吊索张力的接触力最值

Figure 7. Maximum and minimum contact forces with different stitch wire tensions

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图 8 不同弹性吊索张力的接触力标准差和定位点最大抬升

Figure 8. Standard deviation of contact force and maximum uplift at supporting points with different stitch wire tensions

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图 9 不同弹性吊索长度的接触力最值

Figure 9. Maximum and minimum contact forces with different stitch wire lengths

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图 10 不同弹性吊索长度的接触力标准差和定位点最大抬升

Figure 10. Standard deviation of contact force and maximum uplift at supporting points with different stitch wire lengths

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表 1 受电弓模型参数

Table 1. Model parameters of pantograph

受电弓	m₃/kg	m₂/kg	m₁/kg	k₃/（kN•m⁻¹）	k₂/（kN•m⁻¹）	k₁/（kN•m⁻¹）	c₃/（N•s•m⁻¹）	c₂/（N•s•m⁻¹）	c₁/（N•s•m⁻¹）
DSA250	7.51	5.85	4.64	8.38	6.20	0.08	0	0	70.00
DSA380	7.12	6.00	5.80	9.43	14.10	0	0	0	70.00

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表 2 接触网设计参数

Table 2. Catenary design parameters

接触网	标称跨距/m	承力索线型	接触线线型	承力索单位长度质量/（kg•m⁻¹）	接触线单位长度质量/（kg•m⁻¹）	承力索张力/kN	接触线张力/kN	结构高度/m	弹性吊索长度/m
O2-1型	60	JTMH 95 mm²	CTMH 120 mm²	0.849	1.082	15	≥ 15.0	1.6	18
京沪高速	50	JTMH 120 mm²	CTMH 150 mm²	1.065	1.350	20	31.5	1.6	18

接触网	弹性吊索线型	弹性吊索单位长度质量/（kg•m⁻¹）	弹性吊索张力/kN	吊弦间隔/m	吊弦数量/组	拉出值/m	跨距数量/跨	分析区间/m
O2-1型	JTMH 35 mm²	0.311	2.80～3.50	8～12	6	0.3	12	240～960
京沪高速	JTMH 35 mm²	0.311	3.50	8～12	5	0.2	12	200～800

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表 3 250 km/h等级接触网接触力统计值

Table 3. Catenary contact force statistics at 250 km/h level

截面积/mm²		F_m/N		σ/N		F_min/N		F_max/N		(F_max−F_min)/N		d_up/mm
前弓	后弓	前弓	后弓	前弓	后弓	前弓	后弓	前弓	后弓	前弓	后弓	d_up/mm
25	25	120.4	120.6	23.2	40.4	68.0	5.7	202.0	251.6	134.0	245.9	81.4
35	35	120.4	120.6	24.0	37.5	70.4	33.0	195.4	218.4	125.1	185.5	80.1

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表 4 350 km/h等级接触网接触力统计值

Table 4. Catenary contact force statistics at 350 km/h

截面积/mm²		F_m/N		σ/N		F_min/N		F_max/N		(F_max−F_min)/N		d_up/mm
前弓	后弓	前弓	后弓	前弓	后弓	前弓	后弓	前弓	后弓	前弓	后弓	d_up/mm
25	25	186.2	187.8	30.2	52.6	99.2	41.1	251.1	308.0	151.9	266.9	102.3
35	35	187.0	185.3	31.8	49.8	96.2	54.0	269.6	324.6	173.4	270.6	102.2

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