既有250 km/h高速铁路提速的线路技术条件与速度限值研究

钱科元; 林红松; 蔡文锋; 余浩伟; 代丰

doi:10.13238/j.issn.1004-2954.202504160001

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既有250 km/h高速铁路提速的线路技术条件与速度限值研究

规划/运输 | 更新时间：2026-09-28

- 既有250 km/h高速铁路提速的线路技术条件与速度限值研究
- Research on Technical Conditions and Speed Limits for Speed Increase on Existing 250 km/h High-speed Railway Lines
- 铁道标准设计 2026年70卷第10期页码：10-18
- 作者机构：
  
  中铁二院工程集团有限责任公司，成都 610031
- 作者简介：
  
  钱科元（1993—），男，工程师，2018年毕业于西南交通大学车辆工程专业，工学硕士，主要从事新制式交通车辆、轨道工程勘察设计、科研工作，E-mail:qiankeyuan06@163.com。
- 基金信息：
  
  国家重点研发计划项目(2023YFB4302506-02);四川省重点研发计划项目(2024YFHZ0221);中铁二院工程集团有限责任公司科学计划项目(KSNQ243022;KSNQ243002)
- DOI：10.13238/j.issn.1004-2954.202504160001
  中图分类号： U238;U232
- 收稿：2025-04-16，
  
  修回：2025-06-10，
  
  网络首发：2025-06-25，
  
  纸质出版：2026-10-20
- 稿件说明：
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钱科元, 林红松, 蔡文锋, 等. 既有250 km/h高速铁路提速的线路技术条件与速度限值研究[J]. 铁道标准设计, 2026,70(10):10-18.

QIAN Keyuan, LIN Hongsong, CAI Wenfeng, et al. Research on Technical Conditions and Speed Limits for Speed Increase on Existing 250 km/h High-speed Railway Lines[J]. Railway Standard Design, 2026, 70(10): 10-18.
钱科元, 林红松, 蔡文锋, 等. 既有250 km/h高速铁路提速的线路技术条件与速度限值研究[J]. 铁道标准设计, 2026,70(10):10-18. DOI： 10.13238/j.issn.1004-2954.202504160001.

QIAN Keyuan, LIN Hongsong, CAI Wenfeng, et al. Research on Technical Conditions and Speed Limits for Speed Increase on Existing 250 km/h High-speed Railway Lines[J]. Railway Standard Design, 2026, 70(10): 10-18. DOI： 10.13238/j.issn.1004-2954.202504160001.

摘要

【目的】

为了探明制约车辆在既有250 km/h高速铁路曲线路段基础设施上提速的控制因素，提出既有250 km/h基础设施的提速改造建议。

【方法】

基于随机振动与多体动力学理论，建立车-轨耦合动力学模型。

【结果】

（1）在现行技术标准要求下，车辆在既有250 km/h铁路基础设施上提速空间有限，车辆最高运行速度不能达到300 km/h;（2）现行标准中最大设计超高值制约了车辆进一步提速的空间，建议将最大设计超高值提高至200 mm；（3）欠超高指标对圆曲线路段车辆动力学性能具有决定性作用，现行标准中90 mm的最大欠超高值较为苛刻，建议将其逐步调整至100～105 mm;（4）一定变化范围内的夹曲线长、超高时变率对车辆动力学运行性能影响较小，建议将夹曲线最小长度由0.6

逐步降至0.4

（

为设计速度）、最大超高时变率由31 mm/s逐步增至45 mm/s，便于既有基础设施的夹曲线长和缓和曲线长度满足车辆提速后运行要求；（5）线路超高调整至200 mm后，曲线半径

=2800

3200

3500 m三种工况下，车辆最高运行速度分别可达272

288

303 km/h。

【结论】

揭示了平面曲线参数内在联动关系，探明了欠超高、夹曲线长、超高时变率等指标对车辆动力学性能的影响，分析得到不同线路超高下的车辆运行速度限值。研究方法及成果可为同类研究提供指导与借鉴。

Abstract

[Objective]

This study aims to identify the controlling factors restricting speed increases on curved sections of existing 250 km/h high-speed railway infrastructure

and to propose upgrading recommendations for speed increase on such infrastructure.

[Methods]

Based on stochastic vibration and multibody dynamics theories

a vehicle-track coupled dynamics model was established.

[Results]

（1）Under the requirements of current technical standards

the potential for increasing vehicle speed on existing 250 km/h railway infrastructure was limited

and the maximum operating speed of vehicles cannot reach 300 km/h.（2）The maximum design superelevation specified in current standards restricted further vehicle speed increases.Increasing the maximum design superelevation to 200 mm was recommended.（3）The cant deficiency played a decisive role in the vehicle dynamic performance on circular curve sections

and the maximum cant deficiency of 90 mm specified in current standards was relatively stringent.It was recommended th

at this value be gradually increased to 100～105 mm.（4）Within a certain range of variation

the intermediate circular curve length and rate of change of superelevation had limited effects on vehicle dynamic performance.It was recommended that the minimum intermediate circular curve length be gradually reduced from 0.6

to 0.4

（

represents the design speed）

and the maximum rate of change of superelevation be gradually increased from 31 mm/s to 45 mm/s

so that the intermediate circular curve length and transition curve length of existing infrastructure can meet the operating requirements after speed increase.（5）After the track superelevation was adjusted to 200 mm

the maximum operating speeds under the three curve radii of

=2800

3200

and 3500 m can reach 272

288

and 303 km/h

respectively.

[Conclusion]

The intrinsic interrelationships among plane curve parameters are revealed.The effects of cant deficiency

intermediate circular curve length

and rate of change of superelevation on vehicle dynamic performance are clarified.The speed limits of vehicle operation under different track superelevation conditions are obtained through analysis.The research methods and findings can provide guidance and reference for similar studies.

关键词

Keywords

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