도시철도차량의 사용수명 예측에 관한 사례 연구

Abstract

The service life of the urban rail car was uniformly set up to twenty five years before the revision of the related laws in March 19, 2009. However, as the rail car design, manufacturing technologies and maintenance skills have improved, it was revised as its designed service life, listed on the manufacturing specification of the urban rail car and according to a precise diagnosis result, it can be extended up to Maximum fifteen years. It is prescribed that the use of extension should be determined by the precise diagnosis guidelines of the urban rail car. The detailed process and methods to determine the use of extension are as follows. After the inspection of its appearance, dimensions, defects, and corrosion is done, the worst condition is selected for the heat deterioration about high-voltage power lines / auxiliary power cables. Then, the actual moving stress is measured through structure analysis. By the evaluation of remaining life based on this data, the use of extension can be predicted. This study, according to the related laws, analyzes the cases of the precise diagnosis and the evaluation of remaining life and predicts the service life for Seoul Metro line No.2 rail cars.