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Title |
An Experimental Study on Splitting Bond Strength of RC Column Reinforced with External Steel-Band
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Authors |
김창식(Chang-Sik Kim) ; 윤승조(Seung-Joe Yoon) ; 허승웅(Seung-Woong Ho) ; 윤필중(Pil-Joong Yoon) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2014.18.6.041 |
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Keywords |
부착강도 ; 외부보강 ; 스틸밴드 Splitting bond strength ; Reinforced by external ; Steel-band |
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Abstract |
In order to investigation splitting bond strength of the deformed longitudinal reinforcing bars in the R·C members strengthened laterally with the external steel-band, a total 9 sets of test re-bars with and without active confining force given by the external steel-band are pulled monotonically until failure. Test results indicate that the bond strength becomes higher with the increase in number of steel-band sets and their initial stress magnitude. This is due to the active confining force given by the steel-band, and passive confining forces given by the steel-band and transverse reinforcements, in which the passive confinement effect varies depending on the magnitude of active confining force. An equation to estimate the splitting bond strengths for the R·C members strengthened laterally with the external steel-band is developed based on the several experimental results of the present study.
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