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Title |
Evaluation of the Maximum Yield Strength of Steel Stirrups and Shear Behavior of RC Beams
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Keywords |
전단보강철근의 항복강도 ; 전단강도 ; 철근콘크리트 보 ; 전단파괴모드 ; 사인장균열 maximum yield strength of shear reinforcement ; shear strength ; reinforced concrete beams ; shear failure modes ; diagonal cracks |
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Abstract |
The requirement of the maximum yield strength of shear reinforcement in the KCI-07 code is quite different to those in the ACI-08 code, EC2-02, CSA-04, and JSCE-04 codes. Eighteen RC beams having high strength shear reinforcement were tested. Test results indicated that even if the yield strength of shear reinforcement in beams was much greater than the maximum yield strength required by the KCI-07 design code, the shear reinforcement of these beams reached their yield strains. Furthermore, the shear strengths of tested beams increased almost linearly with the increase of the amount of shear reinforcement. In addition, larger numbers of diagonal cracks developed in the web of the beam having greater yield strength than the beams having lower yield strength of shear reinforcement. The maximum crack width of the beam having high strength shear reinforcement was approximately the same to the crack with of the beam having normal strength shear reinforcement.
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