지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.6
- 수록면
- 43 - 50 (8page)
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Continued efforts to improve the bond strength were continuously achieved in order to prevent the increase of development and splice length by the development of high strength reinforcement. High relative rib area reinforcing bars by increasing the relative rib area were developed to improve the bond strength, however there is a limit to increase the bond strength because the increase of the rib height can cause the pullout failure. A few domestic researcher suggested new deformation pattern of bars with high and low height tranverse ribs, and these alternating ribs are expected to help limiting local shear failure and increase the bond strength significantly. They verified its bond performance by various experimental research results. But it is very difficult to reflect the bond strength increase in the design equation because most development design equations did not include the variables which reflect the deformation pattern of the bars. This study suggested the modified development design equation to consider the bond strength increase of the new deformation pattern of bars. Previoue research results and proposed design equations were synthesized and analyzed to draw a applicable equation for it. Proposed equation was based on the equation of ACI 408 committee, and replaced the relative rib area R<SUB>r</SUB> to modified relative rib area R<SUB>r</SUB>? using the weighted average of high and low rib height as 0.8 and 0.2 each. And the analysis of previous experimental results indicated that the restriction value of (cω+K<SUB>tr</SUB>)/dbwas too conservative, and it is possible to extend it to 4.5.
목차
Abstract
1. 서론
2. 기존 연구 고찰
3. 수정 설계식 제안
4. 결론
참고문헌
참고문헌 (10)
참고문헌 신청
Darwin, D. / 1996 / Splice strength of high relative rib area reinforcing bars / ACI Structural Journal :95~106
Darwin, D. / 1996 / Development length criteria for conventional and high relative rib area reinforcing bars / ACI Structural Journal :347~358
Darwin, D. / 1993 / Effect of deformation height and spacing on bond strength of reinforcing bars / ACI Structural Journal :646~656
Hamad, B. S. / 1995 / Bond strength improvement of reinforcing bars with specially designed rib geometries / ACI Structural Journal :3~13
ACI Committee 408 / 2008 / Splice and development length of high relative rib area reinforcing bars in tension and commentary
Darwin, D. / 1996 / Development length criteria for conventional and high relative rib area reinforcing bars / ACI Structural Journal :347~358
Darwin, D. / 1993 / Effect of deformation height and spacing on bond strength of reinforcing bars / ACI Structural Journal :646~656
Hamad, B. S. / 1995 / Bond strength improvement of reinforcing bars with specially designed rib geometries / ACI Structural Journal :3~13
ACI Committee 408 / 2008 / Splice and development length of high relative rib area reinforcing bars in tension and commentary
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