한국지반공학회논문집 (Journal of the Korean Geotechnical Society)

한국지반공학회 (Korean Geotechnical Society)
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성토지지말뚝의 지하매설관 측방이동 방지효과

Effect of Embankment-Pile on Preventing Lateral Movement of Buried Pipe

  • 김재홍 (한국수자원공사 K-water연구원) ;
  • 홍원표 (중앙대학교 건설환경플랜트공학과)
  • Kim, Jae-Hong (Infrastructure Research Center KIWE, K-water) ;
  • Hong, Won-Pyo (Dept. of Civil, Environmental & Plant Engrg., ChungAng Univ.)
  • 투고 : 2014.11.10
  • 심사 : 2014.12.22
  • 발행 : 2014.12.31
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초록

측방유동 지반 속에 설치된 매설관의 측방이동과 이에 대한 성토지지말뚝의 방지효과를 관찰하기 위하여 일련의 현장 실험시공을 시행하였다. 매립중인 서해안 연약지반에 지하매설관(H.P:400mm)를 부설하고 인접 위치에 성토를 3단계로 시행하여 침하판과 지중경사계를 이용하여 지하매설관의 수직변위(침하)와 수평변위를 확인하였다. 성토에 따른 측방유동 억지대책으로는 성토지지말뚝을 설치하였다. 실험시공 결과 성토도중에는 매설관이 미미하게 융기하는 현상이 발생하였고 추후 침하하다 점차 수렴하는 거동으로 나타났다. 성토지지말뚝 보강 효과는 약 2.0배로 확인되었다. 또한, 침하와 변위는 상부지반에서는 크고 하부지반에서는 적게 침하가 발생하였고 변위는 비례하여 발생하는 것으로 나타났다.

To observe the behavior of lateral deformation of buried pipe and the preventing effect of embankment piles against the lateral deformation, a series of full-scale field tests were performed on a reclaimed coastal area. A buried pipe was installed in the west coast undergoing reclamation and embankment was performed by three steps. Then vertical settlement and lateral displacement were measured by the settlement plate and the inclinometer. Embankment pile system were applied to prevent the lateral displacement of buried pipe. Heave of the buried pipe slightly happens during embankment and following settlement. Finally the behavior steadily converged. The preventing effect of the embankment pile was approximately two times stronger than non-reinforcement. Both settlement and lateral displacement appear to be bigger at upper ground and smaller at lower ground.

키워드

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피인용 문헌

  1. Lateral earth pressure on a pipe buried in soft grounds undergoing lateral movement vol.1, pp.3, 2016, https://doi.org/10.1080/24705314.2016.1211238