DOI QR코드

DOI QR Code

Behavior of Tension Clamp in Rail Fastening System

레일 체결장치 텐션클램프의 거동

  • Choi, Shin-Hyung (Structure Department, Jangmaek Engineering Co., Ltd.) ;
  • Park, Beom-Ho (Department of Civil Engineering, Chungnam National University) ;
  • Yun, Kyung-Min (Department of Civil Engineering, Chungnam National University) ;
  • Bae, Hyun-Ung (Research Institute for Construction Disaster Prevention, Chungnam National University) ;
  • Lim, Nam-Hyoung (Department of Civil Engineering, Chungnam National University)
  • Received : 2015.11.06
  • Accepted : 2015.12.04
  • Published : 2015.12.31

Abstract

In a situation in which importance of rail fastening system is growing with increasing the construction of concrete track, an accident of tension clamp(the component of rail fastening system) breaking has been recently occurred. This results from various factors such as field condition, operating agency, running condition, traffic frequency and so on. Thus, the study for the behavior of tension clamp is required. In this paper, an experiment and finite element analysis(FEA) have been performed to analyse the mechanical behavior of tension clamp. The stress and displacement of tension clamp have been analyzed as the clamping force through a laboratory test, and they were compared with FEA results. Furthermore, the stress and displacement of the tension clamp are derived from train load condition applying the verified model, and the fatigue vulnerability of the tension clamp is identified through stress analysis.

콘크리트 궤도 건설의 증가로 인한 레일 체결장치의 중요성이 커지고 있는 상황에서 최근 레일 체결장치의 부속품인 텐션클램프가 절손되는 사고가 발생되었다. 이는 현장상태, 운영기관, 열차운행조건 및 빈도 등 다양한 요인에 의한 것으로 텐션클램프의 거동관련 연구가 필요하다. 본 논문에서는 실내실험 및 유한요소해석을 통해 텐션클램프의 역학적 거동을 분석하였다. 실내실험을 수행하여 텐션클램프 체결력에 따른 응력 및 변위를 도출하고 이를 유한요소해석 결과와의 비교를 통해 해석 모델을 검증하였다. 또한 검증된 모델을 적용하여 열차 하중에 따른 텐션클램프의 변형과 응력을 도출하고, 응력 분석을 통해 텐션클램프의 피로에 대한 취약도를 파악하였다.

Keywords

References

  1. Seo, S.B., Railway engineering, Book gallery, pp. 147-180, 2008
  2. Baik, C.H., The Parametric Study on the Performance Characteristics of Elastic Rail Fastening System on the Sharp Curved Track, Seoul National University of Science and Technology, 2012
  3. Seo, S.B., Track engineering, Book gallery, pp.37-77, 2009
  4. Vossloh, Rail fastening systems for slab tracks -System 300, Publications.
  5. Ansys, Workbench Manual ver.14.5, 2012
  6. DIN EN 10089, Hot rolled steels for quenched and tempered springs technical delivery conditions, 2003
  7. KS D 3503, Rolled steels for general structure, 2013
  8. Lee, D.W., Choi, J.Y., Baik, C.H., Park, Y.G., "Influence of Initial Clamping Force of Tension Clamp on Performance of Elastic Rail Fastening System", Journal of the Korean Society of Civil Engineers, Vol.33, No.3, pp. 1243-1251, 2013 DOI: http://dx.doi.org/10.12652/Ksce.2013.33.3.1243
  9. Lee, J.D., Railroad Track Mechanics, pp.55, 2001