地铁曲线段参数对钢轨波磨影响分析与打磨周期评估  

Analysis of rail corrugation influenced by metro curve parameters and evaluation of grinding cycle

作　　者：钱舒月 何庆[1] 高天赐[1] 王平[1] 万壮 高文杰 QIAN Shuyue;HE Qing;GAO Tianci;WANG Ping;WAN Zhuang;GAO Wenjie(MOE Key Laboratory of High-speed Railway Engineering,Southwest Jiaotong University,Chengdu 610031,China;Chengdu Metro Co.,Ltd.,Chengdu 610081,China)

机构地区：[1]西南交通大学高速铁路线路工程教育部重点实验室,成都610031 [2]成都地铁有限责任公司,成都610081

出　　处：《北京交通大学学报》2023年第1期26-34,共9页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金(U1934214,51878576);四川省科技厅重点研发项目(2020YFG0049)。

摘　　要：地铁线路具有曲线半径小、站间距离短等特点,列车运行时的频繁启动与制动会导致轮轨间相互作用进一步被恶化,加剧了钢轨波磨的同时也增加了城市噪声污染和行车风险.为研究波磨的产生规律,针对地铁曲线段钢轨打磨的各类影响因素,将地铁线路划分为多个连续的非均匀网格,结合钢轨线路历史打磨信息,建立基于可靠性理论的钢轨波磨的生存分析模型,量化各异质性因素对波磨的影响程度,并对打磨周期进行评估.结果表明:该模型能够评估不同异质性因素影响下钢轨波磨的打磨周期,对于指导地铁线路的养护维修具有一定现实意义.Metro lines are characterized by small curve radii and short distances between stations.The frequent starting and braking during train operation can further worsen the wheel-rail interaction,exacerbating rail corrugation,and increasing urban noise pollution and driving risk.To evaluate the risk of rail corrugation and understand the law of its generation,the line is divided into many continuous nonuniform grids.By combining this with historical rail grinding data,a survival analysis model based on reliability theory is developed to evaluate the impact of various risk factors on the grinding cycle of rail corrugation.The findings indicate that the model can estimate the grinding cycle of rail corrugation under the influence of various risk factors,which is of practical significance for guiding maintenance of subway lines.

关 键 词：钢轨打磨周期评估 地铁小半径曲线 钢轨波磨 加速失效时间模型 

分 类 号：U216.9[交通运输工程—道路与铁道工程]