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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.24 No.1
- 발행연도
- 2019.1
- 수록면
- 37 - 49 (13page)
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In this study, the shear behaviour of reinforced concrete (RC) beams that were retrofitted using precast panels of ultra-high performance fiber reinforced concrete (UHPFRC) is presented. The precast UHPFRC panels were glued to the side surfaces of RC beams using epoxy adhesive in two different configurations: (i) retrofitting two sides, and (ii) retrofitting three sides. Experimental tests on the adhesive bond were conducted to estimate the bond capacity between the UHPFRC and normal concrete. All the specimens were tested in shear under varying levels of shear span-to-depth ratio (a/d=1.0; 1.5). For both types of configuration, the retrofitted specimens exhibited a significant improvement in terms of stiffness, load carrying capacity and failure mode. In addition, the UHPFRC retrofitting panels glued in three-sides shifted the failure from brittle shear to a more ductile flexural failure with enhancing the shear capacity up to 70%. This was more noticeable in beams that were tested with a/d=1.5. An approach for the approximation of the failure capacity of the retrofitted RC beams was evolved using a multi-level regression of the data obtained from the experimental work. The predicted values of strength have been validated by comparing them with the available test data. In addition, a 3-D finite element model (FEM) was developed to estimate the failure load and overall behaviour of the retrofitted beams. The FEM of the retrofitted beams was conducted using the non-linear finite element software ABAQUS.
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참고문헌 (41)
참고문헌 신청
2014 / ACI committee 318, Building Code Requirements for Structural Concrete and Commentary, ACI 318-14
2014 / ACI-Committee 546, 546.3R-14: Guide to Materials Selection for Concrete Repair / American Concrete Institute
Ombres, L. / 2015 / Structural performances of reinforced concrete beams strengthened in shear with a cement based fiber composite material / Compos. Struct 122:316~329
Rahman, S. / 2005 / Ultra high performance concrete, recent applications and research / Aust. J. Civil Eng 2(1):13~20
J.S. Kalyana Rama / 2017 / Fracture properties of concrete using damaged plasticity model -A parametric study / Structural Engineering and Mechanics, An Int＇l Journal 64(1):59~69
2014 / ACI-Committee 546, 546.3R-14: Guide to Materials Selection for Concrete Repair / American Concrete Institute
Ombres, L. / 2015 / Structural performances of reinforced concrete beams strengthened in shear with a cement based fiber composite material / Compos. Struct 122:316~329
Rahman, S. / 2005 / Ultra high performance concrete, recent applications and research / Aust. J. Civil Eng 2(1):13~20
J.S. Kalyana Rama / 2017 / Fracture properties of concrete using damaged plasticity model -A parametric study / Structural Engineering and Mechanics, An Int＇l Journal 64(1):59~69
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