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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.12 No.4
- 발행연도
- 2018.5
- 수록면
- 453 - 469 (17page)
이용수
초록· 키워드
오류제보하기
In current design codes, crack control design criterion for prestressed concrete (PSC) members is stricter than conventional reinforced concrete (RC) members. In particular, it is stipulated that the net tensile stress of prestressing strands should be controlled under 250 MPa in the serviceability design of PSC members belonging to the Class C category section that is expected to be cracked due to flexure under service load conditions as defined in ACI318 code. Thus, the cracked section analysis is essentially required to estimate the tensile stress of the prestressing strands under the service loads, which requires very complex iterative calculations, thereby causing many difficulties in the applications of the Class C PSC members in practice. Thus, this study proposed a simple method to estimate the net tensile stress of the prestressing strands (△f<SUB>ps</SUB>) under the service load conditions, and also provided a summary table to be used for checking whether the net tensile stress (△f<SUB>ps</SUB>) exceeds the stress limit (250 or 350 MPa) with respect to the magnitude of effective prestress (f<SUB>se</SUB>).
목차
Abstract
1. Introduction
2. Research Significance
3. Net Tensile Stress Limit for PSC Members at Service Loads
4. Parametric Study for Estimation of Net Tensile Stresses of PSC Members at Service Loads
5. Analysis Results of the Parametric Study
6. Proposed Approaches
7. Conclusions
References
참고문헌 (30)
참고문헌 신청
ACI Committee 318. (2014). Building code requirements for structural concrete (ACI 318-14) and commentary. Farmington Hills, MI: American Concrete Institute.
American Association of state Highway and Transportation Officials. (2010). AASHTO LEFD bridge design specifications: Customary U.S. units (5th ed.). Washington, D.C: AASHTO.
Atutis, M., Valivonis, J., & Atutis, E. (2015). Analysis of serviceability limit state of GFRP prestressed concrete beams. Composite Structures, 134(15), 450?459.
Bentz, E.C. (2000). Sectional analysis of reinforced concrete members. Ph.D. Dissertation, University of Toronto, Ontario, Canada.
Collins, M. P., & Mitchell, D. (1991). Prestressed concrete structures. Englewood Cliffs, NJ: Prentice Hall.
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