Prediction of Ring Deflection GRP Pipe Buried Underground

지중매설 GRP 관의 관변형 예측

  • Received : 2013.08.14
  • Accepted : 2013.09.23
  • Published : 2013.09.30


Glass fiber reinforced plastic (GRP) pipes buried underground are attractive for use in harsh environments, such as for the collection and transmission of liquids which are abrasive and/or corrosive. In this paper, we present the result of investigation pertaining to the structural behavior of GRP flexible pipes buried underground. In the investigation of structural behavior such as a ring deflection, experimental and analytical studies are conducted. In addition, vertical ring deflection is measured by the field test and finite element analysis (FEA) is also conducted to simulate behavior of GRP pipe buried underground. Based on the results from the finite element analyses considering soil-pipe interaction the vertical ring deflection behavior of buried GRP pipe is predicted. In addition, analytical and experimental results are compared and discussed.


GRP pipe;Field test;Finite element analysis (FEA);Vertical ring deflection


  1. FLAC 3D (2009), User's manual, Itasca Consulting Group Inc.
  2. Hongik University Research Institute of Science and Technology (2011), Investigation of Pipe Deflection Behavior and Prediction of Long-term Ring Deflection of GFRP pipe (${\varphi}$2,400mm) Buried Underground, Research Report.
  3. Hongik University Research Institute of Science and Technology (2013), Structural Behavior of Prediction of GRP Pipe (${\varphi}$2,400mm) Buried Underground, Research Report.
  4. Kim, S. H. (2011), "A Study on the Ring Deflection of Buried Flexible Sewer Pipe," Master Thesis, Department of Civil Engineering, Hongik University, Seoul, Korea.
  5. KS M ISO 10466 (2004), "Plastics Piping System-glass-reinforced Thermosetting Plastics (GRP) Pipes-Test Method to Prove the Resistance to Initial Ring Deflection," Korean Agency for Technology and Standards (KS), Seoul, Korea.
  6. Kim, S. H., Park, J. S., and Yoon, S. J. (2012), "Long-term Ring Deflection Prediction of GFRP Pipe in Cooling Water Intake for the Nuclear Power Plant," Journal of Korean Society for Advanced Composites Structures, Vol. 3, No. 3, pp. 1-8.
  7. Watkins, R. and Anderson, L. R. (2000), Structural Mechanics of Buried Pipe, CRC Press, New York.
  8. ASTM D 2412 (2011), Standard Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading, American Society for Testing and Materials (ASTM), Pennsylvania, USA.
  9. AWWA (2005), Fiberglass Pipe Design, 2nd Ed. Manual No. M 45, American Water Works Association.

Cited by

  1. Ring Deflection Prediction of Pipe Composed of Glass Fiber Reinforced Plastic Outer Layers and Polymer Mortar Inner Layer Section vol.753, pp.1662-9795, 2017,