Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
권호 표지
DOI QR코드

DOI QR Code

Bond Models for GFRP Rebar Embedded in Concrete

GFRP 보강근과 콘크리트 사이의 부착모델에 관한 고찰

  • Received : 2005.10.16
  • Published : 2006.05.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents the comparison of the goodness-of-fit test of analytical bond models between concrete and steel or GFRP reinforcements. Bond test specimens were prepared in accordance with the CSA codes and the rebars used in the test were steel and two types of commercial GFRP rebar products. Using the test data, a bond model was proposed, and comparison of goodness-of-fit test for existing bond models and proposed bond model was carried out by the least squares method. The result indicates that the proposed bond model has better goodness-of-fit test than the existing ones.

본 논문은 철근 또는 GFRP 보강근과 콘크리트 사이의 해석적 부착모델에 관한 적합성에 대해 기술하였다. 부착시편은 CSA 규준에 따라 제작하여 실험하였으며, 실험에 사용된 보강근의 종류는 철근과 상용화된 GFRP 보강근 2종(ASLAN, ISOROD)이다. 실험결과를 이용하여 새로운 부착모델을 제안하였으며, 기존 연구자들이 제안한 해석적 부착모델과 새롭게 제안된 부착모델의 적합성을 최소자승법을 통해 검토하였다. 검토결과 새롭게 제안된 해석적 부착모델은 기존 부착모델에 비해 높은 적합성을 나타내었다.

Keywords

References

  1. 강금식, EXCEL 활용 현대 통계학, 박영사, 2003.
  2. 유영준, 박지선, 박영환, 유영찬, 김긍환, 김형열, "GFRP 보강근의 표면 형상과 거칠기에 따른 부착모델에 관한 연구," 봄학술발표 논문집, 한국구조물진단학회, 2005, pp. 61-66.
  3. 한국건설기술연구원, FRP 복합재료 보강재 개발 및 이를 활용한 콘크리트 구조물 건설기술 개발, 1차년도 최종보고서, 2004.
  4. Alunno, Rosetti, V., Caleota, D., and Giammatteo, M. M., "Local bond stress-slip relationships of glass fibre reinforced plastic bars embedded in concrete," Mat. and Struct., Vol. 28, No. 180, 1995.
  5. Burgoyne, C.J., "Should FRP be Bonded to Concrete?" International Symposium Fiber- Reinforced-Plastic Reinforcement for Concrete Structures, ACI SP-138, 1993.
  6. Burong, Z. and Brahim, B., "Pullout Bond Properties of Fiber-Reinforced Polymer Tendons to Grout," Journal of Materials in Civil Engineering, Vol. 14, No. 5, 2002.
  7. Comite Euro-International du Beton (CEB), CEB-FIP model code 1990, Bulletin d'information, Lausanne, Switzerland, 1991, pp.203-205.
  8. Cosenza, E., Manfredi, G. and Realfonzo, R., "Analytical modeling of bond between FRP reinforcing bars and concrete," Non-Metallic (FRP) Reinforcement for Concrete Structures, Proc. 2nd International RILEM Symposium (FRPRCS-2), Taerwe L., editor, 1995, pp.165- 171.
  9. Cosenza, E., Manfredi, G. and Realfonzo, R., "Behavior and Modeling of Bond of FRP Rebars to Concrete", Journal of Composites for Construction, Vol.1, No.2, 1997.
  10. CSA Standard, Design and Construction of Building Components with Fibre-Reinforced Polymers, Canadian Standards Association, S806-02, 2002.
  11. Eligehausen, R., Popov, E.P., and Bertero, V.V, "Local Bond Stress-Slip Relations of Deformed Bars Under Generalized Excitations." Rep. No. UCB/EERC 83/23, Earthquake Engineering Research Center, University of California, Berkeley, 1983.
  12. Faoro, M., "Bearing and deformation behaviour of structural components with reinforcements comprising resin bounded glass fibre bars and conventional ribbed steel bars," Proc. Int. Conf. on Bond in Concrete, 1992.
  13. JSCE, State-of-the-Art Report on Continuous Fiber Reinforcing Materials, Concrete Engineering series 3, Japan Society of Civil Engineers, Tokyo, 1993.
  14. Makitani, E., Irisawa, I., and Nishiura, N., "Investigation of Bond in Concrete Member with Fiber Reinforced Plastic Bars," International Symposium Fiber-Reinforced-Plastic Reinforcement for Concrete Structures, ACI SP-138, 1993.
  15. Malvar, L.J., "Bond Stress-Slip Characteristics of FRP Rebars," TR-2013-SHR Naval facilities engineering service center, Port Hueneme, CA., 1994.
  16. Malvar, L.J., Cox, J.V. and Bergeron, C.K., "Bond between Carbon Fiber Reinforced Polymer Bars and Concrete. I: Experimental Study," Journal of Composites for Construction, Vol. 7, No. 2, 2003.