Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
권호 표지
DOI QR코드

DOI QR Code

Experimental Study of Flexural Behavior of Steel Beam Strengthened with the Fiber Reinforced Polymer Plastic(FRP) Strips

섬유보강플라스틱(FRP) 스트립으로 보강한 철골보의 휨거동에 관한 실험적연구

  • Choi, Sung Mo (School of Architecture, University of Seoul) ;
  • Park, Jai Woo (Korea Infrastructure Safety Corporation, Research division, Dept. of Architectural engineering)
  • 최성모 (서울시립대학교 건축학부) ;
  • 박재우 (한국시설안전공단 시설안전연구소, 광운대학교 건축공학과)
  • Received : 2013.12.26
  • Accepted : 2014.03.10
  • Published : 2014.04.27
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents the experimental results of flexural behavior of steel beam strengthened with fiber reinforced polymer plastic (FRP) strips subjected to static bending loading. Four H beams were fabricated strengthened with aramid strips and carbon strips and one control specimen were also fabricated. Among them two specimens were strengthened with partial length. The H-beams had two types of failure mode, depending on the length of the FRP strips:(1) strip debonding in beams with partial length reinforcement and (2) strip rupture in beams with full length reinforcement. From the test, it was observed that maximum increase of 16% was also achieved in bending-load capacity.

본 연구에서는 콘크리트 섬유보강플라스틱(FRP)로 보강된 철골보의 정적 휨하중상태에서 휨거동에 관한 실험결과를 제시하였다. 아라미드섬유 스트립과 탄소섬유 스트립으로 보강된 4개의 실험체를 제작하였으며, 1개의 기준실험체를 제작하였다. 이중 두 실험체는 부분보강방식으로 보강되었다. H빔은 두 종류의 파괴모드를 가지고 있는데, (1) 부분보강 실험체에서는 FRP 스트립이 탈락(debonding)되는 파괴모드를 보이고 있으며, 전면보강 실험체에서는 FRP 스트립이 파단(rupture)되는 거동을 보이고 있다. 실험결과 16%의 휨내력 상승효과를 관찰하였다.

Keywords

References

  1. 대한건축학회(2000) 건축물 하중기준 및 해설, 대한건축학회, pp.61-72. AIK (2000) Standard Design Loads for Buildings, Architectural Institute of Korea, pp.61-72 (in Korean).
  2. 대한건축학회(2009) 건축구조설계기준 및 해설(KBC 2009), 기문당. AIK (2009) Korea building code and commentary - structural, Architectural Institute of Korea (in Korean).
  3. Xiao, X.L., and Zhang, L. (2006) "State-of-the art Review on FRP Strengthened Steel Structures", Engineering Structures., Vol.29, pp.1808-1823.
  4. Miller, T.C., Chajes, M.J., Mertz, D.R., and Hastings, J.N. (2001) "Strengthening of a Steel Bridge Girder Using CFRP Plates", J. Bridge. Eng, ASCE, Vol.6, No.6, pp.514-522. https://doi.org/10.1061/(ASCE)1084-0702(2001)6:6(514)
  5. Colombi, P., and Poggi, C. (2006) "An experimental, Analytical and Numerical Study of the Static Behavior of Steel Beams Reinforced By Pultruded CFRP Strips", J. of Composites., Vol.37, pp.64-73. https://doi.org/10.1016/j.compositesb.2005.03.002
  6. Schnerch, D., and Eizkallai, S. (2008) "Flexural Strengthening of Steel Bridges With CFRP strips", J. Bridge. Eng, ASCE, Vol.13, No.2, pp.192-201. https://doi.org/10.1061/(ASCE)1084-0702(2008)13:2(192)
  7. Shatt, A., and Fami, A. (2008) "Repair if Cracked Steel Firders Connected ro Concrete Slabs Using Carbon-Fiber-Reinforced Polymer Sheets", J. of Composites for Construction., Vol.12, No.6, pp.650-659. https://doi.org/10.1061/(ASCE)1090-0268(2008)12:6(650)
  8. 박재우, 최선규, 최성모, 송동엽, 유정한(2012) 탄소섬유쉬트로 보강된 세장한 각형강관기둥의 중심축하중실험, 한국강구조학회 논문집, 한국강구조학회, 제24권, 제6호, pp.735-742. Park, J.W., Choi, S.K., Choi, S.M., Song, D.Y., and Yoo, J.H. (2012) "Concentrated Axial Loading Test for Slender Square Hollow Section Reinforced by Carbon Fiber Reinforced Polymer Sheets(CFRP Sheets)", Journal of Korean Society of Steel Construction, KSSC, Vol.24, No.6, pp.735-742 (in Korean). https://doi.org/10.7781/kjoss.2012.24.6.735
  9. 박재우, 최선규, 유정한(2013) 탄소섬유쉬트(CFRP Shwwts)로 보강된 장주 각형강관기둥의 중심축하중거동, 한국강구조학회 논문집, 한국강구조학회, 제25권, 제3호, pp.299-305. Park, J.W., Choi, S.K., and Yoo, J.H. (2013), "Behaviors of Long Square Hollow Section Columns Retrofitted using Carbon Fiber Reinforced Polymer Sheets(CFRP Sheets) Subjected to Concentrated Axial Loading", Journal of Korean Society of Steel Construction, KSSC, Vol.25, No.3, pp.299-305 (in Korean). https://doi.org/10.7781/kjoss.2013.25.3.299
  10. 박재우, 홍영균, 최성모(2010) 탄소섬유쉬트로 보강된 콘크리트충전 원형강관기둥의 연성능력, 한국강구조학회논문집, 한국강구조학회, 제22권, 제2호, pp.185-195. Park, J.W., Hong, Y.K., and Choi, S.M. (2010) "Ductility Capacity for Concrete Filled Steel Circular Tubes Reinforced by Carbon Fiber Sheets (CFSs)", Journal of Korean Society of Steel Construction, KSSC, Vol.22, No.2, pp.185-195 (in Korean).
  11. 류재용, 이원식, 오경진, 이상우, 최성모(2013) AFRP를 이용한 강재 보강에서 보강방법에 따른 부착성능, 2013년도 한국복합신소재구조학회 학술발표대회논문집, 한국복합신소재구조학회, pp.37-38. Ryu, J.Y., Lee, W.S., Oh, G.J., Lee, S.W., and Choi, S.M. (2013) Bond Capacity of Steel Members Strengthened by Various Methods using AFRP, Proceedings of Conference Journal of Korean Society for Advanced Composite Structures, KSACS, pp.37-38 (in Korean).
  12. 류재용, 문지영, 이원식, 오경진, 최성모(2013) FRP를 이용한 철골보의 휨 보강, 2013년도 한국강구조학회 학술대회발표집, 한국강구조학회, pp.127-128. Ryu, J.Y., Moon, J.Y., Lee, W.S., Oh, G.J., and Choi, S.M. (2013) Flexural Strengthening of Steel Beams using FRP, Proceedings of Annual Conference Korean Society of Steel Construction, KSSC, pp.127-128 (in Korean).
  13. 류재용, 김도범, 최영환, 노광근, 최성모(2012) AFRP를 이용한 steel beam 휨보강 성능에 관한 실험, 2012년도 한국복합신소재구조학회 학술발표대회논문집, 한국복합신소재구조학회, pp.33-34. Ryu, J.Y., Kim, D.B., Choi, Y.H., Noh, K.G., and Choi, S.M. (2012) Flexural Strengthening Capacity of Steel Beam Reinforced by AFRP, Proceedings of Conference Journal of Korean Society for Advanced Composite Structures, KSACS, pp.37-38 (in Korean).
  14. 홍건호(2008) 벨크로를 이용한 FRP 플레이트 보강공법의 시공공법 개선, 구조물진단학회지, 한국구조물진단학회, 제12권, 제6호, pp.735-742. Hong, G.H. (2008) Construction Method Improvement of the FRP-plate Strengthening Method using the Velcro, Journal of Korean Structural Maintenance and Inspection Engineering, KSMI, Vol.12, No.6, pp.225-232 (in Korean).
  15. 지식경제부(2013) 복합소재와 제진장치를 이용한 발전소 철골구조물의 최적내진보강에 관한 기술개발, 지식경제부 전력산업융합원천 기술개발사업 연구보고서. Ministry of Knowledge Economy (2013) Development of seismic retrofit for steel structures in power plant using fiber reinforced plastic and vibration control devices, Report on Ministry of Knowledge Economy (in Korean).
  16. 한국구조물진단학회(2006) 한국구조물진단공학, pp.383-390. KSMI (2006) Korea structural maintenance and inspection engineering, Korea Structural Maintenance and Inspection, pp.383-390 (in Korean).
  17. KS (2007) KS B 0801, 금속재료인장시험편. KS (2007) KS B 0801, Test pieces for tensile test for metallic materials (in Korean).
  18. ASTM (2008) ASTM D 3039, Standard test method for tensile properties of polymer matrix composites.
  19. Schnerch, D., Danwood, M., Rizkalla, S., and Sumner, E. (2007) Proposed design guidelines for strengthening of steel bridges with FRP materials, Construction and Building Materials, Vol.21, pp.1001-1010. https://doi.org/10.1016/j.conbuildmat.2006.03.003

Cited by

  1. 아라미드 FRP 스트립과 강판 사이의 계면 부착응력에 관한 실험적 연구 vol.27, pp.4, 2014, https://doi.org/10.7781/kjoss.2015.27.4.359
  2. 탄소섬유쉬트(CFRP Sheets)로 보강된 각형강관(HSS)기둥의 유한요소해석 연구 vol.28, pp.3, 2014, https://doi.org/10.7781/kjoss.2016.28.3.185
  3. GFRP와 강관으로 구성된 합성형 보강링의 휨거동 vol.29, pp.1, 2017, https://doi.org/10.7781/kjoss.2017.29.1.061
  4. 내진보강용 탄소섬유 복합사 하이브리드 그리드 직물 제조 및 공학적 성능 평가. I. 탄소섬유 복합사 제조 및 최적 직물 설계 vol.55, pp.4, 2014, https://doi.org/10.12772/tse.2018.55.280
  5. Experimental Study on Bond Behavior of Reinforced Concrete Beams Flexural Reinforced with Basalt Fiber Sheets vol.11, pp.2, 2014, https://doi.org/10.11004/kosacs.2020.11.2.024
  6. Prediction of Flexural Moment of Reinforced Concrete Beam in Reinforced Basalt Sheets vol.11, pp.4, 2020, https://doi.org/10.11004/kosacs.2020.11.4.001