高铁ZYJ7型道岔凹坑成因及整治研究OA
Study on Formation Mechanism and Remediation of Pits in ZYJ7 Turnout for High-speed Railways
针对高铁有砟线路 ZYJ7 型道岔运营十年后出现的 3 类典型凹坑问题,采用现场调研、试验检测、数值模拟与工程验证结合的方法,对 491 台道岔转辙设备开展长期跟踪监测,重点分析心轨 X1/X2 锁钩及滑床板处凹坑的形成机理,明确列车冲击、部件老化等因素的协同作用.基于研究成果,构建道岔凹坑病害全流程整治体系,制定量化整治标准.工程应用表明,该体系实施后,道岔凹坑预报警同比下降 82%,设备平均无故障运行时间从 82 天提升至 316天,行车干扰时间下降 91.3%,维护成本降低 58%,为高铁有砟线路道岔长效运维提供了理论与技术支撑.
Targeting at three typical types of pit problems in ZYJ7 turnouts on ballasted tracks of high-speed railways after ten years of service,this paper adopts a combined research method of on-site research,experimental testing,numerical simulation and engineering verification.Through long-term tracking and monitoring of 491 sets of turnout switching devices,the formation mechanisms of pits at the lock hook of switch rails X1 and X2 and at the slide plate are analyzed.The synergistic mechanism of such factors as train impacting and component aging is also clarified.Based on the research results,a full-process remediation system is constructed,and quantitative remediation standards are formulated for turnout pits.Engineering application shows that after the implementation of this remediation system,the pre-alarm information caused by turnout pits has decreased by 82%year-on-year,the average mean time between failures(MTBF)of equipment has increased from 82 days to 316 days,the train operation disruption time has decreased by 91.3%,and the maintenance cost has decreased by 58%.The research results provide theoretical and technical support for the long-term effective operation and maintenance of turnouts on ballasted tracks of high-speed railways.
许伟杜;伍新景
中国铁路广州局集团有限公司惠州电务段,广东 惠州 516000中国铁路广州局集团有限公司惠州电务段,广东 惠州 516000
交通工程
高铁有砟线路ZYJ7型道岔凹坑病害成因机制整治技术运维优化
high-speed railway ballasted trackZYJ7 turnoutpit defectformation mechanismremediation technologyoperation and maintenance optimization
《铁路通信信号工程技术》 2026 (5)
51-57,7
中国国家铁路集团科技研究开发计划课题项目(2023J007-D)
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