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Title |
An Experimental Study on the Shear Behavior of Reinforced Concrete Beams Strengthened by Slit Type Steel Plates with Anchor Bolt
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Keywords |
Slit형 강판 ; 앵커볼트 ; 전단내력 ; 전단파괴모드 ; 전단스팬 ; 부착 및 볼팅 slit type steel plates ; anchor bolt ; shear capacity. shear fracture modes ; shear span ; adhesive bonding and bolting |
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Abstract |
Reinforced concrete beams of existing structure often encounter insufficient shear problems for various reasons. Application of steel plates is one of widely used methods for shear strengthening of reinforced concrete beams that are insufficient of shear capacity. This study presents test results on strengthening shear deficient RC beams by external bonding of vertical and diagonal slit type steel plates with anchor bolt. Test parameters are width, interval, angle and length of slits with anchor bolt. The purpose was to evaluate the failure modes and shear capacities for RC beams strengthened by various slit type steel plates with anchor bolt. The results showed that the slit type steel plate specimens strengthened by adhesive bonding and bolting failed in shear fracture modes at maximum load. Flexural crack first occurred on the tension face of beam and then inclined cracks occurred on the shear span. Finally, slit type steel plates strengthened by adhesive bonding and fastening bolts managed to delay abrupt debonding and didn't detach fully from main body of RC beam.
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