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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.53 No.5
- 발행연도
- 2015.1
- 수록면
- 997 - 1,016 (20page)
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초록· 키워드
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The contribution of tensioned concrete between cracks (tension-stiffening) cannot be ignoredwhen analysing deformation of reinforced concrete elements. The tension-stiffening effect is crucial when itcomes to adequately estimating the load-deformation response of steel reinforced concrete and the morerecently appeared fibre reinforced polymer (FRP) reinforced concrete. This paper presents a unifiedmethodology for numerical modelling of the tension-stiffening effect in steel as well as FRP reinforcedflexural members using the concept of equivalent deformation modulus and the smeared crack approach toobtain a modified stress-strain relation of the reinforcement. A closed-form solution for the equivalent secantmodulus of deformation of the tensioned reinforcement is proposed for rectangular sections taking theEurocode 2 curvature prediction technique as the reference. Using equations based on general principles ofstructural mechanics, the main influencing parameters are obtained. It is found that the ratio between theequivalent stiffness and the initial stiffness basically depends on the product of the modular ratio andreinforcement ratio (nρ), the effective-to-total depth ratio (d/h), and the level of loading. The proposedmethodology is adequate for numerical modelling of tension-stiffening for different FRP and steelreinforcement, under both service and ultimate conditions. Comparison of the predicted and experimentaldata obtained by the authors indicates that the proposed methodology is capable to adequately model thetension-stiffening effect in beams reinforced with FRP or steel bars within wide range of loading.
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참고문헌 (37)
참고문헌 신청
Aiello, M.A. / 2000 / Cracking analysis of FRP-reinforced concrete flexural members / Mech. Compos. Mater 36(5):389~394
Al-Sunna, R. A. S. / 2012 / Deflection behaviour of FRP reinforced concrete beams and slabs: an experimental investigation / Compo.s Part: Eng 43(5):2125~2134
Balázs, G.L. / 2013 / Design for SLS according to fib Model Code 2010 / Struct. Concrete 14(2):99~123
Barris, C. / 2009 / An experimental study of the flexural behaviour of GFRP RC beams and comparison with prediction models / Compos. Struct 91(3):286~295
Barris, C. / 2011 / Fibre reinforced polymer reinforced concrete beams, Serviceability behaviour: testing and analysis / LAP LAMBERT Academic Publishing GmbH & Co
Al-Sunna, R. A. S. / 2012 / Deflection behaviour of FRP reinforced concrete beams and slabs: an experimental investigation / Compo.s Part: Eng 43(5):2125~2134
Balázs, G.L. / 2013 / Design for SLS according to fib Model Code 2010 / Struct. Concrete 14(2):99~123
Barris, C. / 2009 / An experimental study of the flexural behaviour of GFRP RC beams and comparison with prediction models / Compos. Struct 91(3):286~295
Barris, C. / 2011 / Fibre reinforced polymer reinforced concrete beams, Serviceability behaviour: testing and analysis / LAP LAMBERT Academic Publishing GmbH & Co
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