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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.9
- 수록면
- 25 - 32 (8page)
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초록· 키워드
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The stresses in concrete and steel of a reinforced concrete slab are continuously changed with time due to creep of concrete. In general, reinforced concrete structures are designed to resist the tensile force by reinforcement and the compressive force by concrete. Therefore, the deformations and forces due to creep with time of reinforced concrete slab at underground level which carries the compressive force due to the pressure of water and soils have to be considered in analysis and design.
The purpose of this study is to propose the model equation of aging coefficients for the slab under flexural moment and axial force. Aging coefficients which are used for aging adjusted effective modulus method(AEMM) in analysis of reinforced concrete structures are obtained by calculating and comparing the curvature from step-by-step method and AEMM. Some parameters like initial loading time, loading duration, notional creep coefficient, reinforcement ratio and axial force are considered to analyze the aging coefficients. From the analysis, the curvature is larger when initial loading time is earlier, loading duration is longer, notional creep coefficient is larger, the ratio of compression steel to tensile steel is smaller and axial force is larger. The aging coefficients are smaller in the case of earlier initial loading time, longer loading duration, larger notional creep coefficient, smaller reinforcement ratio, and larger axial force.
Comparing the relationships between the parameters and considering the similarities and tendencies, a model equation of aging coefficients which is able to reasonably predict the long term deformation is finally proposed.
The purpose of this study is to propose the model equation of aging coefficients for the slab under flexural moment and axial force. Aging coefficients which are used for aging adjusted effective modulus method(AEMM) in analysis of reinforced concrete structures are obtained by calculating and comparing the curvature from step-by-step method and AEMM. Some parameters like initial loading time, loading duration, notional creep coefficient, reinforcement ratio and axial force are considered to analyze the aging coefficients. From the analysis, the curvature is larger when initial loading time is earlier, loading duration is longer, notional creep coefficient is larger, the ratio of compression steel to tensile steel is smaller and axial force is larger. The aging coefficients are smaller in the case of earlier initial loading time, longer loading duration, larger notional creep coefficient, smaller reinforcement ratio, and larger axial force.
Comparing the relationships between the parameters and considering the similarities and tendencies, a model equation of aging coefficients which is able to reasonably predict the long term deformation is finally proposed.
목차
Abstract
1. 서론
2. 콘크리트 단면의 장기변형 해석법
3. 단계해석법에 의한 슬래브의 곡률 해석
4. 재령보정계수의 산정
5. 재령보정계수 모델식의 제안
6. 결론
참고문헌
참고문헌 (6)
참고문헌 신청
Bazant, Z. P. / 1972 / Prediction of Concrete Creep Effects Using Age-Adjusted Effective Modulus Method / Journal of the American Concrete Institute 69:212~217
Nevile, A.M. / Creep of Plain and Structural Concrete / Consturction Press :253~259
Nevile, A.M. / Creep of Plain and Structural Concrete / Consturction Press :264~276
Lee, S. S / 2000 / Inelastic analysis of reinforced concrete frames
김진근 / 199309 / FAILURE BEHAVIOR OF REINFORCED-CONCRETE FRAMES BY THE COMBINED LAYERED AND NONLAYERED METHOD / COMPUTERS STRUCTURES 48(5):819~825
Nevile, A.M. / Creep of Plain and Structural Concrete / Consturction Press :253~259
Nevile, A.M. / Creep of Plain and Structural Concrete / Consturction Press :264~276
Lee, S. S / 2000 / Inelastic analysis of reinforced concrete frames
김진근 / 199309 / FAILURE BEHAVIOR OF REINFORCED-CONCRETE FRAMES BY THE COMBINED LAYERED AND NONLAYERED METHOD / COMPUTERS STRUCTURES 48(5):819~825
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