基于时间-区段-MTQI三维网络模型的捣固决策优化  

Optimization of Tamping Decision Based on Three-dimensional Network Model of Time-Section-MTQI

作　　者：邱实 葛含章 阿茹娜 廖林勇 王劲 孙颖 QIU Shi;GE Hanzhang;A Runa;LIAO Linyong;WANG Jin;SUN Ying(School of Civil Engineering,Central South University,Changsha 410075,China;MOE Key Laboratory of Engineering Structures of Heavy-haul Railway,Changsha 410075,China;Intelligent Monitoring Research Center of Rail Transit Infrastructure,Changsha 410075,China;China Railway Group Limited,Beijing 100039,China;Guangxi Yanhai Railway Company Limited,Guangxi Zhuang Autonomous Region,Nanning 530003,China)

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]重载铁路工程结构教育部重点实验室,湖南长沙410075 [3]中南大学轨道交通基础设施智能监控研究中心,湖南长沙410075 [4]中国中铁股份有限公司,北京100039 [5]广西沿海铁路股份有限公司,广西南宁530003

出　　处：《铁道学报》2025年第4期124-132,共9页Journal of the China Railway Society

基　　金：国家自然科学基金(52178442)。

摘　　要：列车提速及客货运输量逐年增长,导致轨道几何状态恶化速度加快,轨道交通基础设施建设工作由建设为主向建养并重发展,原有捣固决策模式已无法满足铁路安全管理需求。为实现铁路线路的合理科学检修,提出一种基于时间-区段-MTQI三维网络模型的捣固决策优化方法。该方法利用改良型大机捣固质量指数MTQI评估轨道质量状态,通过轨道状态恶化函数及捣固作业效果函数描述轨道状态在运营期内的变化,将轨道线路划分为200 m等长轨道单元区段,在维修计划规划时间范围内建立三维离散网络模型,通过赋给网络点弧权重将决策优化问题转化为最短路径问题,利用改进Dijkstra算法对模型求解,并以50 km线路为例进行验证。研究结果表明,通过所提模型制定的大机捣固作业计划经济成本改善率为20.9%,全年平均MTQI改善率为11.3%,在满足作业区段连续性的同时能有效降低捣固成本、改善作业效果。The continuous acceleration of train speeds and the annual increase in passenger and freight transportation volumes have accelerated the deterioration of track geometry.As a result,with the construction of rail infrastructure shifting from being primarily construction-focused to a balanced approach of both construction and maintenance,the traditional track tamping decision-making model is no longer sufficient to meet the needs of railway safety management.To achieve a rational and scientific maintenance strategy for railway lines,this paper proposed an optimization method for tamping decisions based on a time-section-MTQI three-dimensional network model.Using the modified large machine tamping quality index(MTQI)to evaluate the track quality state,employing track deterioration and tamping effectiveness functions to describe the changes in track conditions during the operational period,and by dividing the track into 200-meter uniform track unit sections,this approach established a three-dimensional discrete network model within the maintenance planning time frame.By assigning arc weights to the network nodes,the decision optimization problem was transformed into a shortest path problem.The model was solved using an improved Dijkstra algorithm,and verified with a case study of a 50 km track section.The results demonstrate that the tamping operation plan based on the proposed model improves the economic cost by 20.9%,with the annual average MTQI improvement rate of 11.3%.This method effectively reduces tamping costs and improves operational effectiveness while ensuring the continuity of work zones.

关 键 词：有砟轨道 捣固作业 综合决策 DIJKSTRA算法 

分 类 号：U216.4[交通运输工程—道路与铁道工程]