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Additional Axial Stress of CWR Track on the Bridge according to the Variation of Design Vehicle Load

설계차량하중 변화에 따른 교량상 장대레일 궤도의 부가축응력

  • Yun, Kyung-Min (Department of Civil Engineering, Chungnam National University) ;
  • Jeon, Byeong-Heun (Department of Civil Engineering, Chungnam National University) ;
  • Choi, Shin-Hyung (Department of Civil Engineering, Chungnam National University) ;
  • Lim, Nam-Hyou (Department of Civil Engineering, Chungnam National University)
  • Received : 2014.12.05
  • Accepted : 2015.01.08
  • Published : 2015.01.31

Abstract

The CWR(Continuous Welded Rail) on a bridge shows complex structural behavior compared to those on the roadbed. The influence factors on the track-bridge interaction are the variation of temperature and vehicle load. The analysis methods for track-bridge interaction, material property, modeling method, loads and combination method are indicated in the domestic railway design principle, KR C-08080. The vehicle load in KR C-08080 was changed in 2014. In this study, to evaluate the effect of the changed vehicle load on the track-bridge interaction, the track-bridge interaction analyses were performed for 22 bridges by using finite element method.

교량상의 장대레일은 궤도-교량상호작용에 의해 토노반상의 장대레일에 비해 복잡한 거동을 보인다. 궤도-교량 상호작용에 영향을 미치는 요인은 온도변화와 차량하중이다. 국내 철도설계지침 KR C-08080에서는 해석 시 사용하는 물성치, 모델링 방법, 하중 및 하중 조합 방법 등에 대하여 제시하고 있다. 2014년에 KR C-08080에서 제시된 차량하중이 변경되었다. 본 연구에서는 변경된 차량하중의 영향을 평가하기 위하여 22개 교량에 대한 궤도-교량 상호작용 유한요소 해석을 수행하였다.

Keywords

References

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