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Experimental analysis for the effect of integrated pipe-roof in trenchless method

비개착 일체형 파이프루프 지보효과의 실험적 분석

  • 심영종 (한국토지주택공사 토지주택연구원 도시환경연구실) ;
  • 진규남 (한국토지주택공사 토지주택연구원 도시환경연구실)
  • Received : 2016.08.01
  • Accepted : 2016.08.22
  • Published : 2016.09.30

Abstract

In recent, in case that the underpass is constructed by trenchless method, its stability increases by reinforcing steel pipe with re-bar and mortar after propulsion into the ground to form pipe-roof. Therefore, it can be predicted that the integrated pipe-roof decreases the stress acting on the underpass by sharing load. In this study, to analyze the effect of integrated pipe-roof and behavior of stress around underpass, experimental tests for the rectangular and arch cross section of the underpass are performed using soil chamber. As a result, stress and strain acting on the underpass decrease due to sharing load by integrated pipe-roof. This phenomenon is more pronounced by increasing the stiffness of pipe-roof. Furthermore it can be expected that cross-section of underpass can be economically designed.

Acknowledgement

Supported by : 토지주택연구원

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