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내부마찰각과 토압 산정방법에 따른 철도교대의 안정성 비교 연구

Stability of Railway Bridge Abutment with Earth Pressure and Internal Friction Angle of Backfill

  • Choi, Chan Yong (High Speed Railway Infrastructure System Research Center, Korea Railraod Research Institute) ;
  • Kim, Hun Ki (High Speed Railway Infrastructure System Research Center, Korea Railraod Research Institute) ;
  • Yang, Sang Beom (High Speed Railway Infrastructure System Research Center, Korea Railraod Research Institute) ;
  • Kim, Byung Il (Research Institute, Expert Group for Earth & Environment)
  • 투고 : 2016.10.17
  • 심사 : 2016.11.08
  • 발행 : 2016.12.31

초록

본 연구에서는 철도 교대를 위한 표준단면을 선정하고, 선정된 단면에 대하여 토압산정방법과 내부마찰각에 따른 직배면과 가상배면에 작용하는 주동토압을 비교 분석하였다. 또한, 기존토압과 개량시행쐐기법의 토압을 이용하여 내부마찰각에 따른 교대의 외적 안정성, 부재력 및 경제성을 분석하였다. 본 연구로부터 가상배면에서의 주동토압은 직배면에서의 주동토압보다 크며, 내부마찰각이 증가함에 따라 감소한다는 것을 알 수 있었다. 기존토압(Rankine, Coulomb, 시행쐐기법) 및 개량토압(개량시행쐐기법) 모두 내부마찰각이 증가함에 따라 부재력은 크게 감소하였고, 경제성은 향상되는 것으로 평가되었다.

과제정보

연구 과제번호 : 철도노반 성능 및 건설비 최적화 기반기술 개발

연구 과제 주관 기관 : 한국철도기술연구원

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