MODELING THE TRANSITION PROCESS OF RAILWAY TRACK IRREGULARITY AND ALL INTEGER MATHEMATICAL

PROGRAMMING MODEL ANALYSES FOR MAKING OPTIMAL TRACK MAINTENANCE SCHEDULE

Abstract

In this paper we investigate the transition process of surface irregularity to determine maintenance strategies effectively. From the statistical data analysis, we develop a degradation model and restoration model. Next, in order to obtain an optimal maintenance policy based upon both maintenance costs and level of irregularity for riding quality and safety we propose an all integer mathematical programming model for making optimal multiple tie tamper (MTT) operation scheduling. This scheduling model allows us to decide when a MTT should be allocated to each depot, and which lot should be executed maintenance with the MTT.