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doi:10.3850/978-981-08-7920-4_S2-S41-cd
Flexural Response of Damaged Steel Beams Strengthened with CFRP Sheets
Amer Hmidan, Yail J. Kim and Siamak Yazdani
Department of Civil Engineering, North Dakota State University, Fargo, ND, USA.
ABSTRACT
The use of adhesively-bonded composite materials has become an attractive option in repairing
and strengthening existing structures. Acceptance of carbon fiber-reinforced polymer (CFRP)
materials for strengthening concrete structures has resulted in the possibility to also strengthen
steel structures. Damaged steel girders can be repaired by epoxy bonding CFRP laminates to
the damaged areas of the member. This paper presents the results of experimental study on
the retrofitting of damaged steel beams with CFRP sheets. A total of four W4×13 A992 steel
beams with a total length of 1982mm are tested to study the effect of CFRP-strengthening on
the flexural behavior of strengthened steel beams using different strengthening techniques. The
main investigation parameter of this study is the retrofitting method used to improve the CFRPsteel
strengthening. The effectiveness of the transverse CFRP anchor in strengthening damaged
steel beams is observed.
Keywords: Fiber reinforced polymer (FRP), Steel, Crack, Damage, Repair, Strengthening.
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