市域轨道交通A型列车排障器结构设计
段鹏飞张鹏吴阳李帅
Structural Design of Obstacle Deflector on Type-A City Rail Transit Train
DUAN PengfeiZHANG PengWU YangLI Shuai
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作者信息:中车长春轨道客车股份有限公司国家轨道客车工程研究中心，130062，长春
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Affiliation:National Engineering Research Center of Railway Vehicles, CRRC Changchun Railway Vehicles Co., Ltd., 130062, Changchun, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.02.017
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中图分类号/CLCN:U270.2
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栏目/Col:研究报告
摘要:
［目的］欧洲标准EN15227：2020中明确要求排障器除了具备排障功能外，还应具备能量吸收功能，并规定了不同速度等级列车排障器应吸收的能量值。基于此要求，有必要对市域轨道交通A型列车排障器的结构设计进行研究。［方法］结合我国某市域轨道交通列车实际项目的需求，提出了设计速度为140km/h的市域轨道交通A型列车排障器的结构设计方案。分别对该排障器的排障单元、吸能单元、防脱机构等主要部件的结构进行了设计。根据EN15227：2020标准中静态负载及动态过载要求，对排障器进行了静强度和动态吸能的仿真分析计算。将仿真计算结果与标准规定的性能要求进行了对比，以评估该排障器结构设计方案的可行性。［结果及结论］排障器在2种静态负载工况下的最大应力均小于标准规定的防撞部件材料屈服强度。动态吸能过程中，铝蜂窝的缓冲力较为平稳，排障器各部件均未发生失效，总吸能量满足标准要求，吸能单元选型合理。由此可认为该排障器结构设计合理，排障能力强，具有良好的缓冲和吸能特性，可以满足市域轨道交通A型列车的使用要求。
Abstracts:
［Objective］ European standard EN 15227:2020 stipulates that except the obstacle-clearing capabilities, OD (obstacle deflector) should also have energy absorption functions, specifying the energy absorption values required for trains at different speed levels. Based on this requirement, it is necessary to study the structural design of the OD for type-A city rail transit trains. ［Method］ In line with the requirements of the actual city rail transit train project in a Chinese city, the structural design scheme for a type-A city rail transit train OD with 140 km/h design speed is proposed. The main components of this OD, including the structures of obstacle-clearing unit, energy-absorbing unit, and anti-trip mechanism are designed. Static strength and dynamic energy absorption simulation analysis calculations are conducted based on the static load and dynamic overload requirements outlined in the standard EN 15227:2020. The simulation calculation results are compared with the performance requirements specified by the standard to evaluate the feasibility of the OD structural design schemes. ［Result & Conclusion］ The maximum stress of the OD under two static load conditions is below the yield strength of the crash component materials as specified by the standard. During the dynamic energy absorption process, the aluminum honeycomb demonstrates stable buffer force with no component failures of the OD. The total energy absorption meets the standard requirements, indicating that the selection of the energy absorption unit is appropriate. Therefore, the structural design of this OD is considered reasonable, with strong obstacle-clearing capabilities and excellent buffering and energy absorption characteristics, meeting the operational requirements of type-A city rail transit trains.
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