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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.20 No.2
- 발행연도
- 2017.1
- 수록면
- 129 - 143 (15page)
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초록· 키워드
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Seismic design of reinforced concrete (RC) structures requires a certain minimum level of flexural ductility. For example, Eurocode EN1998-1 directly specifies a minimum flexural ductility for RC beams, while Chinese code GB50011 limits the equivalent rectangular stress block depth ratio at peak resisting moment to achieve a certain nominal minimum flexural ductility indirectly. Although confinement is effective in improving the ductility of RC beams, most design codes do not provide any guidelines due to the lack of a suitable theory. In this study, the confinement for desirable flexural ductility performance of both normal- and high-strength concrete beams is evaluated based on a rigorous full-range moment-curvature analysis. An effective strategy is proposed for flexural ductility design of RC beams taking into account confinement. The key parameters considered include the maximum difference of tension and compression reinforcement ratios, and maximum neutral axis depth ratio at peak resisting moment. Empirical formulae and tables are then developed to provide guidelines accordingly.
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참고문헌 (33)
참고문헌 신청
ACI Committee 318 / 2014 / Building Code Requirements for Structural Concrete, ACI 318-14 and Commentary / American Concrete Institute
ACI Committee 363 / 1992 / State-of-the-Art
Attard, M. M. / 1996 / The stress-strain relationship of confined and unconfined concrete / ACI Mater. J. 93(5):432~442
Attard, M. M. / 1998 / A two parameter stress block for high-strength concrete / ACI Struct. J. 93(5):432~442
F. T. K. Au / 2006 / Effect of axial load on flexural behaviour of cyclically loaded RC columns / Computers and Concrete, An International Journal 3(4):261~284
ACI Committee 363 / 1992 / State-of-the-Art
Attard, M. M. / 1996 / The stress-strain relationship of confined and unconfined concrete / ACI Mater. J. 93(5):432~442
Attard, M. M. / 1998 / A two parameter stress block for high-strength concrete / ACI Struct. J. 93(5):432~442
F. T. K. Au / 2006 / Effect of axial load on flexural behaviour of cyclically loaded RC columns / Computers and Concrete, An International Journal 3(4):261~284
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