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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.73 No.2
- 발행연도
- 2020.1
- 수록면
- 143 - 152 (10page)
이용수
초록· 키워드
오류제보하기
Deep coupling beams are more prone to suffer brittle shear failure. The addition of steel fibers to seismic members such as coupling beams can improve their shear performance and ductility. Based on the test results of steel fiber reinforced concrete(SFRC) coupling beams with span-to-depth ratio between 1.5 and 2.5 under lateral reverse cyclic load, the shear mechanism were analyzed by using strut-and-tie model theory, and the effects of the span-to-depth ratio, compressive strength and volume fraction of steel fiber on shear strengths were also discussed. A simplified calculation method to predict the shear capacity of SFRC deep coupling beams was proposed. The results show that the shear force is mainly transmitted by a strut-and-tie mechanism composed of three types of inclined concrete struts, vertical reinforcement ties and nodes. The influence of span-to-depth ratio on shear capacity is mainly due to the change of inclination angle of main inclined struts. The increasing of concrete compressive strength or volume fraction of steel fiber can improve the shear capacity of SFRC deep coupling beams mainly by enhancing the bearing capacity of compressive struts or tensile strength of the vertical tie. The proposed calculation method is verified using experimental data, and comparative results show that the prediction values agree well with the test ones.
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참고문헌 (32)
참고문헌 신청
2014 / ACI 318, Building code requirements for structural concrete and commentary / American Concrete Institute
Bhunia, D. / 2007 / A procedure for the evaluation of coupling beam characteristics of coupled shear wall / Asian J. Civil Eng 8(3):301~314
Cai, G. C. / 2016 / Shear capacity of steel fibre reinforced concrete coupling beams using conventional reinforcements / Eng. Struct 128:428~440
Canbolat, B. A. / 2005 / Experimental study on seismic behavior of high-performance fiber-reinforced cement composite coupling beams / ACI Struct. J 102(1):159~166
Chaailal, O. / 1996 / Steel fiber or conventional reinforcement for concrete shear walls? / Concrete International 18(6):39~42
Bhunia, D. / 2007 / A procedure for the evaluation of coupling beam characteristics of coupled shear wall / Asian J. Civil Eng 8(3):301~314
Cai, G. C. / 2016 / Shear capacity of steel fibre reinforced concrete coupling beams using conventional reinforcements / Eng. Struct 128:428~440
Canbolat, B. A. / 2005 / Experimental study on seismic behavior of high-performance fiber-reinforced cement composite coupling beams / ACI Struct. J 102(1):159~166
Chaailal, O. / 1996 / Steel fiber or conventional reinforcement for concrete shear walls? / Concrete International 18(6):39~42
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