Estimating railway rail service life: A rail-grid-based approach

被引：21
作者：
Bai, Lei [1 ,4 ]
Liu, Rengkui [2 ]
Wang, Feng [3 ]
Sun, Quanxin [2 ]
Wang, Futian [1 ]
机构：
[1] Beijing Jiaotong Univ, State Key Lab Rail Traff Control & Safety, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Sch Traff & Transportat, Beijing 100044, Peoples R China
[3] Lanzhou Bur China Railways, Lanzhou 730000, Gansu, Peoples R China
[4] Beijing E Hualu Informat Technol Co Ltd, Beijing 100043, Peoples R China
来源：
TRANSPORTATION RESEARCH PART A-POLICY AND PRACTICE | 2017年 / 105卷
关键词：
Railway rail; Service life; Markov model; Estimation; Heterogeneity; MODEL;
D O I：
10.1016/j.tra.2017.08.007
中图分类号：
F [经济];
学科分类号：
02 ;
摘要：
Precise estimation of railway rail service life is of great significance for the efficient use of maintenance and replacement resources and the effective prevention of broken rails. Here, an innovative model for railway rail service life estimation is proposed. A railway line is divided into adjacent segments of the same specific length. Each segment is termed a "rail grid." Employing the theory of Markov stochastic processes and hazard models, the service life of each rail grid is estimated and the degradation law of each rail grid is customized. The proposed model is verified using five-year rail inspection data for the Longhai Railway. Our evaluation demonstrates that the estimated rail service life is very close to the real rail service life and meets railway management requirements.
引用
收藏
页码：54 / 65
页数：12
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