Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Experimental Study on Interfacial Bond Stress between Aramid FRP Strips and Steel Plates

아라미드 FRP 스트립과 강판 사이의 계면 부착응력에 관한 실험적 연구

  • Park, Jai Woo (Korea Infrastructure Safety Corporation, Research Division) ;
  • Ryoo, Jae Yong (Department of Architecture Engineering, University of Seoul) ;
  • Choi, Sung Mo (School of Architecture, University of Seoul)
  • 박재우 (한국시설안전공단, 시설안전연구소) ;
  • 류재용 (서울시립대학교 건축공학과) ;
  • 최성모 (서울시립대학교 건축학부)
  • Received : 2015.01.06
  • Accepted : 2015.05.29
  • Published : 2015.08.27
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Abstract

This paper presents the experimental results for the interfacial bond behaviour between AFRP strip and steel members. The objective of this paper is to examine the interfacial behavior and to evaluate the interfacial bond stress between Aramid FRP strips and steel plates. The test variables were bond length and AFRP thickness. 18 specimens were fabricated and one-face shear type bond tests were conducted in this study. There were two types of failure mode which were debonding and delamination between AFRP strip and steel plates. From the test, the load was increased with the increasing of bond length and AFRP thickness, which was observed that maximum increase of 63 and 86% were also achieved in load with the increasing of bond length and AFRP thickness, respectively. Finally, bond and slip characteristics had the elastic bond-slip model and it was observed that bond strength and fracture energy were not affected by bond length and AFRP thickness.

본 연구에서는 AFRP 스트립과 강재사이의 부착거동에 관한 실험적 연구를 수행하였다. 실험적 연구를 통해 AFRP 판과 강판사이의 계면부착거동을 관찰하고, 계면부착응력을 산정하는 것이 본 연구의 목표이다. 실험변수로는 부착길이와 AFRP의 두께를 선택하였으며, 18개의 일면전단시편 제작하여 실험을 수행하였다. 실험결과 부착길이와 AFRP 두께가 증가함에 따라 하중값을 증가하였으며, 부착길이와 AFRP 두께가 증가함에 따라 각각 63%, 86%의 하중값이 증가하였다. 끝으로 강재와 AFRP 사이의 부착응력-슬립관계를 산정하였다. 부착응력-슬립관계는 탄성선형거동을 보이고 있으며, 부착길이와 AFRP 두께는 부착응력과 파괴에너지에 영향을 덜 미치는 것으로 나타났다.

Keywords

References

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