한국구조물진단유지관리공학회 논문집 (Journal of the Korea institute for structural maintenance and inspection)

  • 제22권2호
  • /
  • Pages.34-42
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  • 2018
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  • 2234-6937(pISSN)
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  • 2287-6979(eISSN)
한국구조물진단유지관리공학회 (Korea Institute for Structural Maintenance Inspection)
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아스팔트 콘크리트 궤도용 광폭 PSC침목 개발

Development of Wide Prestressed Concrete Sleeper for Asphalt Concrete Track

  • 투고 : 2017.09.18
  • 심사 : 2017.11.01
  • 발행 : 2018.03.01
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초록

아스팔트 콘크리트 궤도(ACT)의 변형을 최소화하고 구조적 안전성을 확보하기 위해서는, 열차 하중을 분산 및 저감시킬 수 있고 아스팔트 도상의 노출을 줄일 수 있는 광폭 형태의 콘크리트 침목이 필요하다. 본 연구에서는 형상 설계를 통해 아스팔트 콘크리트 궤도용 광폭 PSC침목을 개발하였으며, 유한요소해석을 통해 레일 좌면부 및 침목 중앙부에 대한 구조 안전성을 검토하였다. 또한 아스팔트 콘크리트 궤도용 광폭 PSC침목의 설계 적합성을 검증하기 위하여, EN 13230-2에 의거 침목 주요 위치별로 정적 휨 강도 시험, 동적 휨 강도 시험 및 피로 시험을 수행하였다. 성능 시험 결과, 아스팔트 콘크리트 궤도용 광폭 PSC침목은 균열 하중, 파괴 하중, 및 균열 확대 여부 등 유럽 표준에서 요구되는 성능 기준을 모두 충족하였다.

In order to minimize the deformation of asphalt concrete track(ACT) and ensure the structural safety, a wide type concrete sleeper is necessary to distribute vehicle loading and reduce the exposure of the asphalt roadbed. In this research, the wide prestressed concrete(PSC) sleeper for ACT was developed through the shape design and the structural safety was reviewed using finite element analysis. Furthermore, static test, dynamic test and fatigue test were carried out according to EN13230-2 to verify the design appropriateness of the wide PSC sleepers for ACT. The performance test showed that the developed wide PSC sleeper for ACT meets all the performance requirements by European standard.

키워드

참고문헌

  1. Bae, Y. H. and Lee, S. H. (2015), Performance Evaluation of Wide Sleepers on Asphalt Track in High-Speed Railroad, Proceedings of the 2015 Autumn Conference of the Korean Society for Railway, Mokpo, 1367-1371.
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  3. European Committee for Standardization(CEN) (2016), Railway applications-Track-Concrete sleepers and bearers-Part 2: Prestressed monoblock sleepers (EN 13230-2), CEN, Brussles, 5-22.
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