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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.8 No.2
- 발행연도
- 2014.6
- 수록면
- 99 - 116 (18page)
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초록· 키워드
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The American Concrete Institute (ACI) 318-11 permits the use of the moment magnifier method for computing the design ultimate strength of slender reinforced concrete columns that are part of braced frames. This computed strength is influenced by the column effective length factor K, the equivalent uniform bending moment diagram factor C<SUB>m</SUB> and the effective flexural stiffness EI among other factors. For this study, 2,960 simple braced frames subjected to short-term loads were simulated to investigate the effect of using different methods of calculating the effective length factor K when computing the strength of columns in these frames. The theoretically computed column ultimate strengths were compared to the ultimate strengths of the same columns computed from the ACI moment magnifier method using different combinations of equations for K and EI. This study shows that for computing the column ultimate strength, the current practice of using the Jackson?Moreland Alignment Chart is the most accurate method for determining the effective length factor. The study also shows that for computing the column ultimate strength, the accuracy of the moment magnifier method can be further improved by replacing the current ACI equation for EI with a nonlinear equation for EI that includes variables affecting the column stiffness and proposed in an earlier investigation.
목차
Abstract
1. Introduction
2. Research Significance
3. Development of Theoretical Strength Model
4. Description of Simulated Reinforced Concrete Braced Frames
5. Theoretical Procedure Used for Computing Ultimate Strength of Columns in Simulated Braced Frames
6. Design Procedures Used for Computing Ultimate Strength of Columns in Simulated Braced Frames
7. Computation of Ultimate Strength of Columns in Simulated Braced Frames
8. Examination of Computed Ultimate Strengths of Columns in Simulated Braced Frames
9. Summary and Conclusions
References
참고문헌 (21)
참고문헌 신청
1. [단행본] - ACI Committee 318 / 2005 / Building code requirements for structural concrete (ACI 318-05) and commentary (ACI 318R-05) / American Concrete Institute
2. [단행본] - ACI Committee 318 / 2011 / Building code requirements for structural concrete (ACI 318-11) and commentary / American Concrete Institute
3. [학술지(정기간행물)] - Bazant, Z. P / 1984 / Deformation of progressively cracking reinforced concrete beams / ACI Journal 81 (3) : 268 ~ 278
4. [단행본] - Blomeier, G. A / 1975 / Reinforced concrete columns, SP-50 / American Concrete Institute : 41 ~ 65
5. [학술지(정기간행물)] - Breen, J. E / 1964 / The restrained long concrete column as a part of a rectangular frame / ACI Journal 61 (5) : 563 ~ 587
2. [단행본] - ACI Committee 318 / 2011 / Building code requirements for structural concrete (ACI 318-11) and commentary / American Concrete Institute
3. [학술지(정기간행물)] - Bazant, Z. P / 1984 / Deformation of progressively cracking reinforced concrete beams / ACI Journal 81 (3) : 268 ~ 278
4. [단행본] - Blomeier, G. A / 1975 / Reinforced concrete columns, SP-50 / American Concrete Institute : 41 ~ 65
5. [학술지(정기간행물)] - Breen, J. E / 1964 / The restrained long concrete column as a part of a rectangular frame / ACI Journal 61 (5) : 563 ~ 587
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