Journal of the Korean Society for Advanced Composite Structures (복합신소재구조학회 논문집)

Korean Society for Advanced Composite Structures (한국복합신소재구조학회)
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An Investigation of Structural Behavior of Underground Buried GFRP Pipe in Cooling Water Intake for the Nuclear Power Plant

원전 냉각수 취수용 지중매설 GFRP관의 구조적 거동 조사

  • 이형규 (서일대학교 토목과) ;
  • 박준석 (홍익대학교 과학기술연구소)
  • Received : 2015.06.03
  • Accepted : 2015.06.10
  • Published : 2015.06.30
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Abstract

GRP pipe (Glass-fiber Reinforced Plastic Pipe) lines making use of FRP (Fiber Reinforced Plastic) are generally thinner, lighter, and stronger than the existing concrete or steel pipe lines, and it is excellent in stiffness/strength per unit weight. In this study, we present the result of field test for buried GRP pipes with large diameter(2,400mm). The vertical and horizontal ring deflections are measured for 387 days. The short-term deflection measured by the field test is compared with the result predicted by the Iowa formula. In addition, the long-term ring deflection is predicted by using the procedure suggested in ASTM D 5365(ANNEX) in the range of 40 to 60 years of service life of the pipe based on the experimental results. From the study, it was found that the long-term vertical and horizontal ring deflection up to 60 years is less than the 5% ring deflection limitation.

Keywords

References

  1. 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.
  2. ASTM D 5365. (2006), "Standard test method for long-term ring-bending strain of fiberglass (glass-fiber-reinforce thermosetting-resin) pipe," American Society for Testing and Materials (ASTM), Pennsylvania, USA.
  3. AWWA (2005), Fiberglass Pipe Design, 2nd Ed. Manual No. M 45, American Water Works Association.
  4. Hongik University Research Institute of Science and Technology (2011), Investigation of Pipe Deflection Behavior and Prediction of Long-term Ring Deflection of GFRP pipe ($\Phi$ 2,400mm) Buried Underground, Research Report. (in Korean).
  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. (in Korean).
  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.

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, https://doi.org/10.4028/www.scientific.net/KEM.753.8
  2. 고온 수침 환경에서 UPE 겔코트 코팅된 지중 매설 파이프용 GFRP의 열화 및 크랙 발생 특성에 관한 연구 vol.17, pp.4, 2015, https://doi.org/10.12814/jkgss.2018.17.4.169