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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.5
- 발행연도
- 2018.7
- 수록면
- 597 - 613 (17page)
이용수
초록· 키워드
오류제보하기
Wrapping reinforced concrete (RC) columns with fiber reinforced polymer (FRP) composites is effective in increasing their capacity. The current state of the art concentrates primarily on fully wrapped columns and few studies dealt with partially wrapped ones. The objective herein is to evaluate the effectiveness of partial wraps (or strips) and to develop a confined concrete compressive stress.strain (f<SUB>c</SUB> - ε<SUB>c</SUB>) model that accounts for partial wrapping. Three-dimensional finite element (FE) models are generated to evaluate the influence of different parameters on the behavior of concentrically loaded RC circular columns that are partially and fully wrapped with FRP. The results indicated an increase in ductility as the number of FRP strips is increased, and revealed that longitudinal steel had little influence on the confined f<SUB>c</SUB> . ε<SUB>c </SUB>relationship. The proposed f<SUB>c</SUB> . ε<SUB>c</SUB> model, derived from the parametric study, accounts for the effect of partial and full confinement, the unconfined concrete strength f ′<SUB>c</SUB> , and yielding of transverse steel. Comparison of the results generated using the proposed model with FE and experimental results are in good agreement.
목차
Abstract
1. Introduction
2. Finite Element Modeling
3. Partial FRP Wraps or Strips
4. Current FRP Confined Concrete Stress–Strain Models
5. Proposed Confined fc − εc Model
6. Comparison of Proposed Model with FE and Experimental Results
7. Conclusions
References
References
참고문헌 (22)
참고문헌 신청
ACI 318-11. (2011). Building Code Requirements for Structural Concrete. Farmington:American Concrete Institute.
ANSYS. (2012). ANSYS Academic Research, Release 14.0. Canonsburg: ANSYS, Inc.
Barros, J., & Ferreira, D. (2008). Assessing the efficiency of CFRP discreteconfinement systems for concrete cylinders. Journal of Composites forConstruction, 12(2), 134?148.
Cui, C., & Sheikh, S. (2010). Experimental study of normal- and high-strengthconcrete confined with fiber-reinforced polymers. Journal of Compositesfor Construction, 14(5), 553?561.
Demers, M., & Neale, K. W. (1999). Confinement of reinforced concrete columnswith fiber-reinforced composite sheets-an experimental study. CanadianJournal of Civil, 26(2), 226?241.
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