상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제26권1호
  • /
  • Pages.13-20
  • /
  • 2012
  • /
  • 1225-7672(pISSN)
  • /
  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
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지중매설 연성관의 관강성 추정

Pipe Stiffness Prediction of Buried Flexible Pipes

  • 박준석 (홍익대학교 토목공학과) ;
  • 김선희 (홍익대학교 토목공학과) ;
  • 김응호 (홍익대학교 토목공학과)
  • 발행 : 2012.02.15
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초록

In this paper, we present the result of an investigation pertaining to the pipe stiffness of buried flexible pipes. Pipe stiffness (PS) formula for the parallel plate loading condition is derived based on the elasticity theory. Vertical and horizontal displacements are also derived. Vertical deflection is always larger than the horizontal deflection because some of energy due to overburden load is stored in the pipe but the difference is negligibly small. In the study, mechanical properties of the flexible pipes produced in the domestic manufacturer are tested and the results are reported in this paper. In addition, pipe stiffness is determined by the parallel plate loading tests and the finite element analysis. The difference between test and analysis is less than 14% although there are significant variations in the mechanical properties of the pipe material. Therefore, it was found that the finite element analysis can be used to predict the pipe stiffness instead of conducting parallel plate loading test.

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참고문헌

  1. KS M ISO 6259-1 (2008), 열가소성 플라스틱 관-인장성의 측정-제1부: 일반 시험방법.
  2. KS M ISO 6259-2 (2008), 열가소성 플라스틱 관-인장성의 측정-제2부: 무가소화 폴리염화비닐(PVC-U), 염소화 폴리염화비닐(PVC-C), 내충격성 폴리염화비닐 (PVC-HI) 관.
  3. 한국상하수도협회 (2011), 하수도시설기준, 환경부.
  4. Smith, G. and Watkins. R. (2004), The Iowa Formula: It's Use and Misuse When Designing Flexible Pipe, Proceeding of Pipelines International Conference, American Society of Civil Engineers, ASCE, pp. 1-7.
  5. Timoshenko, S. P. and Gere, J. M. (1961), Theory of Elastic Stability, 2rd ed., McGraw-Hill, New York.
  6. ANSYS (2008), Release 11.0 Documentation for ANSYS, Pennsylvania.
  7. ASTM D 2412 (2010), Standard Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading, American Society for Testing and Materials.
  8. Javanmard, M. (1993), Soil-Structure Interaction of Fully and Partially Buried Flexible Pipes, Ph.D. Thesis, The University of New Brunswick, New Brunswick, Canada.

피인용 문헌

  1. Prediction of Short-term Behavior of Buried Polyethylene Pipe vol.26, pp.6, 2012, https://doi.org/10.11001/jksww.2012.26.6.907