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
- 2012.10
- 수록면
- 3 - 10 (8page)
이용수
초록· 키워드
오류제보하기
KCI and ACI design code adopted the equation of Branson for simple calculation of deflection, in which a representative value of the effective moment of inertia is used for the whole length of a member. However, the inadequacy of the formulation of the equation had been being pointed out through many researches till now.
This study formulated a new equation of the effective inertia moment for deflection, which was formulated through a clear and simple approach using experimental data. The moment-deflection curves of a simple beam was modeled using by a bilinear curve. The straight line after formation of cracks was determined by the consideration of tension stiffening effect, which is multiplied by the moment of inertia for a cracked section. This coefficient was approximated by a regression curve estimated using experimental results of 18 specimens, in which the tensile strength and reinforcement ratio were selected as a parameter. From the bilinear model the effective inertia moment can be estimated for any level of moment. The deflections estimated using the equation from the study showed the better approximation that from ACI, and comes close to CEB-FIP MODEL CODE 1990, EUROCODE 2. The study also demonstrated statistically that the suggested equation indicated more similar experimental results rather than the domestic standard equation.
This study formulated a new equation of the effective inertia moment for deflection, which was formulated through a clear and simple approach using experimental data. The moment-deflection curves of a simple beam was modeled using by a bilinear curve. The straight line after formation of cracks was determined by the consideration of tension stiffening effect, which is multiplied by the moment of inertia for a cracked section. This coefficient was approximated by a regression curve estimated using experimental results of 18 specimens, in which the tensile strength and reinforcement ratio were selected as a parameter. From the bilinear model the effective inertia moment can be estimated for any level of moment. The deflections estimated using the equation from the study showed the better approximation that from ACI, and comes close to CEB-FIP MODEL CODE 1990, EUROCODE 2. The study also demonstrated statistically that the suggested equation indicated more similar experimental results rather than the domestic standard equation.
목차
Abstract
1. 서론
2. 현 설계 기준의 처짐식 고찰
3. 유효단면 2차 모멘트식의 제안
4. 제안식의 검증
5. 결론
참고문헌
참고문헌 (3)
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UCI(KEPA) : I410-ECN-0101-2014-540-001091992