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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.11 No.1
- 발행연도
- 2017.3
- 수록면
- 1 - 16 (16page)
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초록· 키워드
오류제보하기
The compression or tension-controlled failure mode of concrete beams prestressed with unbonded FRP tendons is governed by the relative amount of prestressing tendon to the balanced one. Explicit assessment to determine the balanced reinforcement ratio of a beam with unbonded tendons (기호는 본문참조) is difficult because it requires a priori knowledge of the deformed beam geometry in order to evaluate the unbonded tendon strain. In this study, a theoretical evaluation of (기호는 본문참조) is presented based on a concept of three equivalent rectangular curvature blocks for simply supported concrete beams internally prestressed with unbonded carbon-fiber-reinforced polymer (CFRP) tendons. The equivalent curvature blocks were iteratively refined to closely simulate beam rotations at the supports, mid-span beam deflection, and member-dependent strain of the unbonded tendon at the ultimate state. The model was verified by comparing its predictions with the test results. Parametric studies were performed to examine the effects of various parameters on (기호는 본문참조).
목차
Abstract
1. Introduction
2. Equivalent Curvature Blocks at Ultimate State
3. Iterative Algorithm for the Prediction of εpfu at Ultimate State
4. Iterative Algorithm for the Determination of ρUpfb
5. Parametric Studies for ρUpfb
6. Conclusions
References
참고문헌 (25)
참고문헌 신청
ACI Committee 318. (2014). Building code requirements for structural concrete and commentary (ACI 318-14). Farmington Hills, MI: American Concrete Institute.
Alkhairi, F. M. (1991). On the behavior of concrete beams prestressed with unbonded internal and external tendon, Ph.D. thesis, University of Michigan, Ann Arbor, MI.
American Concrete Institute (ACI). (2003). Guide for the design and construction of concrete reinforced with FRP bars (ACI 440.1R-03). American Concrete Institute, Farmington Hills, MI.
American Concrete Institute (ACI). (2011). Prestressing concrete structures with FRP tendons (ACI 440.4R-04), American Concrete Institute, Farmington Hills, MI.
Du, J. S., Au, F. T. K., Cheung, Y. K., & Kwan, A. K. H. (2008). Ductility analysis of prestressed concrete beams with unbonded tendons. Engineering Structures, 30(1), 13?21.
Alkhairi, F. M. (1991). On the behavior of concrete beams prestressed with unbonded internal and external tendon, Ph.D. thesis, University of Michigan, Ann Arbor, MI.
American Concrete Institute (ACI). (2003). Guide for the design and construction of concrete reinforced with FRP bars (ACI 440.1R-03). American Concrete Institute, Farmington Hills, MI.
American Concrete Institute (ACI). (2011). Prestressing concrete structures with FRP tendons (ACI 440.4R-04), American Concrete Institute, Farmington Hills, MI.
Du, J. S., Au, F. T. K., Cheung, Y. K., & Kwan, A. K. H. (2008). Ductility analysis of prestressed concrete beams with unbonded tendons. Engineering Structures, 30(1), 13?21.
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