# 철도용 레일체결장치 부품.소재의 실험적 연구를 통한 신뢰성 설계 방안

• 김효산 (서울메트로 기술연구소) ;
• 박준형 (한국화학융합시험연구원 신뢰성본부) ;
• 정명렬 (서울메트로 기술연구소) ;
• 박광화 (한국화학융합시험연구원 신뢰성본부) ;
• 이달재 (서울메트로 기술연구소)
• Published : 2011.10.20

#### Abstract

Railway rail fastening system is the critical device which gives big influences to not only the vehicle driving stability and the orbit's structural stability against the impulsive load, but also the noise vibration and the ride comfort. As a part of the low-carbon green growth, the importance of the railroad industry is getting highlights on its excellent energy-efficiency and eco-friendliness. However, so far the Korea's domestic rail fastening system technology is not so good and the technical reliance to abroad is very heavy. In this study, we conducted comparative analysis on the rail fastening system with new and used one of the same type. And those systems are imported by Seoul Metro and are being used by it. With this basis, we developed the components and the materials and then, established the durability assessment methods appropriate to the Korean domestic circumstances. And through the reliability qualification test on the 7 parts of the rail fastening system, we've improved the reliability and guaranteed the 15 years of service lifetime. ($B_{10}Life15$) Establishment and standardization of Reliability Standard on the parts of the rail fastening system such as anti-vibration pads, guide-plate, screw spike made it possible to perform the internationally fair assessment. And it is thought that we can satisfy the manufactures' and consumers' needs of cost-cutting and qualification security by shortening of assessment period on rail fastening system.

#### Acknowledgement

Supported by : 지식경제부