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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.5 No.2
- 발행연도
- 2011.12
- 수록면
- 77 - 85 (9page)
이용수
초록· 키워드
오류제보하기
The use of headed bars as opposed to standard 90- or 180-degree hooked bars in beam ends, beam-column joints or other steel congested areas for anchorage and bond has become more favorable due to the fact that steel congestion is often created by large bend diameters or crossties. This research mainly focuses on evaluating the code provisions regarding the use of headed bars. Nine simply supported rectangular concrete beams with headed longitudinal reinforcement were tested under a four-point monotonic loading system. The design clear spacing, which varies from 1.5 to 4.25 times the bar diameter, was the only parameter for the experimental investigation. The test results showed that the closely-spaced headed bars were capable of developing to full yield strength without any severe brittle concrete breakout cone or pullout failure. Bond along the bar was not sufficient due to the early loss of concrete integrity. However, the headed bars were effective for anchorage with no excessive moment capacity reduction. This implies that the clear spacing of about 2 times the bar diameter for headed bars may be reasonable to ensure the development of specified yield strength of headed bars and corresponding member design strength.
목차
Abstract
1. Introduction
2. Development and anchorage ofconventional and headed reinforcement
3. Experimental program
4. Experimental results
5. Conclusions
References
참고문헌 (10)
참고문헌 신청
1. [보고서] - ACI Committee 318 / 1971 / Building Code Requirements for Reinforced Concrete (ACI 318-71) : 78 ~
2. [보고서] - ACI Committee 318 / 2008 / Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary : 473 ~
3. [보고서] - / 2004 / Standard Specification for Headed Steel Bars for Concrete Reinforcement : 8 ~
4. [보고서] - / 2002 / Recommendations for Design of Beam-Column Connections in Monolithic Reinforced Concrete Structures (ACI 352R-02) : 37 ~
5. [학술지(정기간행물)] - DeVries, R. A. / 1998 / Effects of Transverse Reinforcement and Bonded Length on the Side-Blowout Capacity of Headed Reinforcement / ACI Structural Journal Special Publication 180 : 367 ~ 389
2. [보고서] - ACI Committee 318 / 2008 / Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary : 473 ~
3. [보고서] - / 2004 / Standard Specification for Headed Steel Bars for Concrete Reinforcement : 8 ~
4. [보고서] - / 2002 / Recommendations for Design of Beam-Column Connections in Monolithic Reinforced Concrete Structures (ACI 352R-02) : 37 ~
5. [학술지(정기간행물)] - DeVries, R. A. / 1998 / Effects of Transverse Reinforcement and Bonded Length on the Side-Blowout Capacity of Headed Reinforcement / ACI Structural Journal Special Publication 180 : 367 ~ 389
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