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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.8
- 수록면
- 181 - 191 (11page)
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초록· 키워드
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The purpose of this study is to investigate the shear strength of high strength reinforced concrete beams according to shear reinforcement ratio and beam section size. A total of twelve specimens were tested and designed concrete compressive strength is 50 MPa. The main variables are shear reinforcement ratio and beam section size fixed with shear span to depth ratio (a/d = 2.5), the tensile reinforcement ratio (ρ = 0.013) and width to depth ratio (h/b = 1.5). The test specimens were divided into three series of H1 (225×338 mm), H2 (270×405 mm) and H3 (315×473mm) respectively. The experimental results show that specimens represent various failure modes such as diagonal tensile failure (DTF), bond failure (BF), shear compression failure (SCF) and flexural compression failure (FCF). In the H1 series, the shear strength increased by 92.0%, 94.1% and 128.4% respectively as the shear reinforcement ratio increased, 103.8%, 138% and 143% respectively in the H2 series, 131.1%, 168.7% and 151.7% respectively in the H3 series. The decreasing rate of shear strength increased as the beam’s effective width increased, which is considered to be due to the size effect. Then, it is shown that the decreasing rate of shear strength increases as d/s increases, and it can be seen that the effect of the size effect increases as the spacing between shear reinforcing bars decreases. As compared to the standard and the proposed equations, theoretical values by proposed equation of Zsutty, Bazant, and Lee has compared relatively well with experimental values.
목차
Abstract
1. 서론
2. 실험
3. 실험결과 및 분석
4. 결론
REFERENCES
참고문헌 (26)
참고문헌 신청
ACI Committee 318. (2014). Building Code Requirements for Structural Concrete (ACI 318-14). American Concrete Institute.
Architectural Institute of Korea. (2016). Korean building Code and Commentary.
Bazant Z. P., & Kazemi, M. T. (1991). Size Effect in Diagonal Shear Failure of Beams without Stirrups, ACI Structural Journal, 88(3), pp. 268-272
Bazant Z. P. (1997). Fracturing Truss Model Size Effect in Shear Failure of Reinforced Concrete, Journal of Engineering Mechanics, 123(12), 1276-1288
Bazant, Z. P., & Yu, Q. (2005). Designing Against Size Effect on Shear Strength of Reinforced Concrete Beams without Stirrups I. Formulation, ASCE Journal of Structural Engineering, 131(12), 1877-1885
Architectural Institute of Korea. (2016). Korean building Code and Commentary.
Bazant Z. P., & Kazemi, M. T. (1991). Size Effect in Diagonal Shear Failure of Beams without Stirrups, ACI Structural Journal, 88(3), pp. 268-272
Bazant Z. P. (1997). Fracturing Truss Model Size Effect in Shear Failure of Reinforced Concrete, Journal of Engineering Mechanics, 123(12), 1276-1288
Bazant, Z. P., & Yu, Q. (2005). Designing Against Size Effect on Shear Strength of Reinforced Concrete Beams without Stirrups I. Formulation, ASCE Journal of Structural Engineering, 131(12), 1877-1885
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