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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.40 No.6
- 발행연도
- 2021.9
- 수록면
- 869 - 880 (12page)
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초록· 키워드
오류제보하기
To perform a nonlinear analysis of building frames in their seismic performance evaluation program, appropriate force-deformation curves of the structural members in linear and nonlinear phases which represent their actual behavior are required. Although these curves have been provided for common existing RC elements prior to retrofitting in available instructions, the codes are silent about appropriate practical models for strengthened elements. In this regard, a comprehensive numerical study is conducted in the Finite Element (FE) software VecTor2 to investigate the effects of various influential parameters on the moment-rotation behavior of CFRP-confined rectangular RC columns. The investigated parameters are cross-sectional dimensions, longitudinal and transverse reinforcement ratios, the level of column axial load, concrete compressive strength, and the effective confinement provided by external CFRP wraps. Then, through the idealization of the obtained moment-rotation curves, the influence of the aforementioned parameters on the plastic rotation capacity of the columns as one of the main required parameters to define the nonlinear behavior of the retrofitted columns is investigated. Accordingly, column axial load intensity, shear force, effective confinement, and column depth are found to be the major effective parameters on the plastic rotation capacity of the columns. Finally, a practical method consistent with ASCE 41-13 is presented to estimate the plastic rotation capacity of CFRP-confined columns.
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참고문헌 (48)
참고문헌 신청
2017 / ACI 440 Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures / American Concrete Institute
José C. Alvarez / 2018 / Nonlinear Backbone Modeling of Concrete Columns Retrofitted with Fiber-Reinforced Polymer or Steel Jackets / ACI Structural Journal 115(1):53~64
2013 / ASCE-SEI 41 American Society of Civil Engineers:seismic evaluation and retrofit of existing buildings
Bentz, E.C. / 2000 / Sectional analysis of reinforced concrete members
Dionysis Biskinis / 2013 / Models for FRP-wrapped rectangular RC columns with continuous or lap-spliced bars under cyclic lateral loading / Engineering Structures 57:199~212
José C. Alvarez / 2018 / Nonlinear Backbone Modeling of Concrete Columns Retrofitted with Fiber-Reinforced Polymer or Steel Jackets / ACI Structural Journal 115(1):53~64
2013 / ASCE-SEI 41 American Society of Civil Engineers:seismic evaluation and retrofit of existing buildings
Bentz, E.C. / 2000 / Sectional analysis of reinforced concrete members
Dionysis Biskinis / 2013 / Models for FRP-wrapped rectangular RC columns with continuous or lap-spliced bars under cyclic lateral loading / Engineering Structures 57:199~212
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