Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Numerical Analysis of Utility Tunnel Movement under Reclamation Ground

매립지반 지하공동구의 수평이동원인에 대한 수치해석적 분석

  • Yoon, Woo Hyun (Department of Civil and Environmental Engineering, Gachon University) ;
  • Hwang, Chulsung (Department of Civil and Environmental Engineering, Gachon University)
  • 윤우현 (가천대학교 토목환경공학과) ;
  • 황철성 (가천대학교 토목환경공학과)
  • Received : 2013.06.26
  • Accepted : 2013.09.06
  • Published : 2013.09.30
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Abstract

Recently reclamation land is largely developed to utilize the land according to economic growth. The soil of landfill is soft, low shear strength, which makes it difficult to use the equipment. A large movement is occurred on the utility tunnel under construction. The inclined land with high water level and underground facilities are widely distributed and the excess pore water pressure may occur under construction similarly to this study. Some different conditions are made to design result, such as 4m of soil piling near the construction area, heavy rainfall during 2nd excavation that may cause flow liquefaction. To analyze the cause of transverse lateral movement, Three dimensional analysis are performed to four load cases, which is original design condition, flow liquefaction by heavy rainfall, unsymmetric lateral soil pressure, and both of them simultaneously. Ten steps of full construction stage, 1st excavation for utility tunnel, construction of utility tunnel, 1st refill, piling soil from 1m to 4 m, 2nd excavation for drainage culvert, liquefaction around the utility tunnel, construction of drainage culvert and 2nd refill, are take into account to investigate the cause of movement.

Keywords

References

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