In order to prevent the debonding failure of CFRP laminate/steel plate joints, this study attempted to use a G-shaped clamp anchorage system to eliminate the peeling stress at the end of joints which causes the debonding of interfaces. Bond characteristics of CFRP/steel interface with and without end anchorage were obtained by conducting double strap tensile tests, and the effectiveness of end anchorage was verified as well. By anchoring on the weak points, the bond strength of the composite plates can be increased. However, for completely preventing debonding of the composites, a more advanced anchorage system which could against the intensive shear stress still needs further investigation.
ZhaoX.L., and ZhangL.State-of-the-art review on FRP strengthened steel structures. Engineering Structures, 29(8), (2007) 1808–1823.
2.
HollawayL.C., and CadeiJ.Progress in the technique of upgrading metallic structures with advanced polymer composites. Progress in Structural Engineering and Materials, 4(2), (2002) 131–148.
3.
FuB., TengJ.G., ChenJ.F., ChenG.M., and GuoY.Concrete Cover Separation in FRP-Plated RC Beams: Mitigation Using FRP U-Jackets. Journal of Composites for Construction, 04016077-1 (2016).
4.
BuyukozturkO., GunesO., and KaracaE.Progress on understanding debonding problems in reinforced concrete and steel members strengthened using FRP composites. Construction and Building Materials, 18(1), (2004) 9–19.
5.
YuanH., TengJ.G., SeracinoR., WuZ.S., and YaoJ.Full-range behavior of FRP-to-concrete bonded joints. Engineering Structures, 26(5), (2004) 553–565.
6.
LuX.Z., TengJ.G., YeL.P., and JiangJ.J.Bond–slip models for FRP sheets/plates bonded to concrete. Engineering structures, 27(6), (2005) 920–937.
7.
DaiJ., UedaT., and SatoY.Unified analytical approaches for determining shear bond characteristics of FRP-concrete interfaces through pullout tests. Journal of Advanced Concrete Technology, 4(1), (2006) 133–145.
8.
FawziaS., ZhaoX.L., and Al-MahaidiR.Bond–slip models for double strap joints strengthened by CFRP. Composite Structures, 92(9), (2010) 2137–2145.
9.
XiaS.H., and TengJ.G.Behaviour of FRP-to-steel bonded joints. In Proceedings of the International Symposium on Bond Behaviour of FRP in Structures (BBFS 2005) (pp. 419–426) (2005, December).
10.
da SilvaF.M.L., and AdamsD.R. Techniques to reduce the peel stresses in adhesive joints with composites. International Journal of Adhesion and Adhesives, 27(3), (2007) 227–235.
11.
RizkallaS., DawoodM., and SchnerchD.Development of a carbon fiber reinforced polymer system for strengthening steel structures. Composites Part A: Applied Science and Manufacturing, 39(2), (2008) 388–397.
12.
HaghaniR., Al-EmraniM., and KligerR.Interfacial stress analysis of geometrically modified adhesive joints in steel beams strengthened with FRP laminates. Construction and Building Materials, 23(3), (2009) 1413–1422.
13.
SenR., LibyL., and MullinsG.Strengthening steel bridge sections using CFRP laminates. Composites Part B: Engineering, 32(4), (2001) 309–322.
14.
OchiN., MatsumuraM., and HisabeN.Experimental study on strengthening effect of high modulus CFRP strips with different adhesive length installed onto the lower flange plate of I shaped steel girder. Procedia Engineering, 14, (2011), 506–512.
15.
WangB., BaiY., HuX., and LuP.Enhanced epoxy adhesion between steel plates by surface treatment and CNT/short-fibre reinforcement. Composites Science and Technology, 127, (2016), 149–57.
16.
LuZ., XianG., and LiH.Effects of exposure to elevated temperatures and subsequent immersion in water or alkaline solution on the mechanical properties of pultruded BFRP plates. Composites Part B Engineering, 77, (2015), 421–30.
