Evaluation and maintenance method for general speed railway turnouts based on multi-source data

作     者：Wang, Pu Yang, Liang Wang, Shuguo Zhang, Huixin Han, Lei Jing, Guoqing 

作者机构：China Acad Railway Sci CO Ltd Railway Engn Res Inst Beijing Peoples R China China Acad Railway Sci Grad Dept Beijing Peoples R China Beijing Jiaotong Univ Sch Civil Engn Beijing Peoples R China 

出 版 物：《CONSTRUCTION AND BUILDING MATERIALS》 (Constr Build Mater)

年 卷 期：2024年第451卷

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：Science and Technology Research Project of CHINA RAILWAY [N2023G078] Scientific Research Project of China Academy of Railway Sciences Corporation Limited [2022YJ177] 

主　　题：Railway turnout maintenance Turnout service state indicator (TSSI) Analytical target cascading (ATC) Analytic hierarchy process (AHP) Multi-source data analysis 

摘      要：In recent years, with the increasing passengers requirements for safety and comfort, as well as the measures of increasing revenue and reducing the expenditure of railway company, more efficient, more scientific and more comprehensive requirements have been put forward for the maintenance of railway turnouts. This paper develops a maintenance strategy based on the Turnout Service State Indicator (TSSI), derived from an analysis of multi-source data concerning turnout conditions. The weights of critical indicators affecting turnout conditions are determined using Analytical Target Cascading (ATC) and Analytic Hierarchy Process (AHP). Subsequently, turnouts are classified into four categories-great, good, general, and poor-based on their TSSI values, guiding specific maintenance strategies. The proposed assessment method was validated using data from four sets of turnouts collected on actual tracks, showing consistency between the assessment results and field technicians evaluations. A comparative analysis of the ATC and AHP suggests that the latter provides a more scientific and objective assessment of turnout conditions. The established methods for evaluating the service state and deciding on turnout maintenance actions have been proven feasible and practical through field validation. These methods can be broadly applied to maintain general speed railway turnouts to enhance repair efficiency and reduce maintenance costs.