铁路通信信号工程技术2026，Vol.23Issue(5)：51-57,7.DOI:10.3969/j.issn.1673-4440.2026.05.008
高铁ZYJ7型道岔凹坑成因及整治研究
Study on Formation Mechanism and Remediation of Pits in ZYJ7 Turnout for High-speed Railways
摘要
Abstract
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.关键词
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Key words
high-speed railway ballasted track/ZYJ7 turnout/pit defect/formation mechanism/remediation technology/operation and maintenance optimization分类
交通工程引用本文复制引用
许伟杜,伍新景..高铁ZYJ7型道岔凹坑成因及整治研究[J].铁路通信信号工程技术,2026,23(5):51-57,7.基金项目
中国国家铁路集团科技研究开发计划课题项目(2023J007-D) （2023J007-D）
