INFLUENCE OF DIFFERENT CONDITIONS OF CONFINEMENTS DUE TO CFRP LAMINATE ON THE STRENGTH AND DUCTILITY OF SLENDER RC CIRCULAR COLUMN BASED ON THE RESULTS OF NONLINEAR ANALYSIS

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MOSTOUFINEZHAD D.; SAADATMAND H.

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Paper Information

Journal: MODARES TECHNICAL AND ENGINEERING Year:2008 | Volume:- | Issue:33 (SPECIAL ISSUE ON CIVIL ENGINEERING) Page(s): 33-44

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Title

INFLUENCE OF DIFFERENT CONDITIONS OF CONFINEMENTS DUE TO CFRP LAMINATE ON THE STRENGTH AND DUCTILITY OF SLENDER RC CIRCULAR COLUMN BASED ON THE RESULTS OF NONLINEAR ANALYSIS

Author(s)

MOSTOUFINEZHAD D. | SAADATMAND H. | Issue Writer Certificate

Keywords

RC COLUMNQ1

CONFINEMENTQ2

CFRP COMPOSITEQ3

BUCKLING LOADQ2

NONLINEAR ANALYSISQ2

Abstract

In this study, results of NONLINEAR ANALYSIS of RC COLUMNs confined with CFRP COMPOSITEs at different parts of the column, under different ratios of lateral force to axial load were investigated. To evaluate the strength enhancement of the confined columns, the load-moment curves for the specimens confined with FRP sheets at different parts of the columns' height were drawn. Furthermore, the ratio of the total area under the moment-rotation curve to the area under the linear part of the curve was taken as ductility criterion. Accordingly, the ratio of the ductility for the specimen confined with FRP composite for a balanced section, to that for the specimen with confined core with spiral reinforcement was calculated as 3.06 and 1.09 for columns wrapped with FRP on the whole height and on the plastic zone, respectively. In the meantime, the aforementioned ratios for those specimens compared to the conventional RC COLUMNs with no spiral were calculated as 5.99 and 3.75, respectively. Furthermore, performing NONLINEAR ANALYSIS and taking into account the effects of large deformations, the CONFINEMENT effect due to the wrapping of the composite on the buckling of the column was evaluated. The axial loading on the column with a very low lateral force was continued until occurrence of a sudden large lateral displacement in the column. Accordingly, the CONFINEMENT of the column wrapped with FRP on the whole height, enhances BUCKLING LOAD up to 64.4%.

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APA: Copy

MOSTOUFINEZHAD, D., & SAADATMAND, H.. (2008). INFLUENCE OF DIFFERENT CONDITIONS OF CONFINEMENTS DUE TO CFRP LAMINATE ON THE STRENGTH AND DUCTILITY OF SLENDER RC CIRCULAR COLUMN BASED ON THE RESULTS OF NONLINEAR ANALYSIS. MODARES TECHNICAL AND ENGINEERING, -(33 (SPECIAL ISSUE ON CIVIL ENGINEERING)), 33-44. SID. https://sid.ir/paper/25015/en

Vancouver: Copy

MOSTOUFINEZHAD D., SAADATMAND H.. INFLUENCE OF DIFFERENT CONDITIONS OF CONFINEMENTS DUE TO CFRP LAMINATE ON THE STRENGTH AND DUCTILITY OF SLENDER RC CIRCULAR COLUMN BASED ON THE RESULTS OF NONLINEAR ANALYSIS. MODARES TECHNICAL AND ENGINEERING[Internet]. 2008;-(33 (SPECIAL ISSUE ON CIVIL ENGINEERING)):33-44. Available from: https://sid.ir/paper/25015/en

IEEE: Copy

D. MOSTOUFINEZHAD, and H. SAADATMAND, “INFLUENCE OF DIFFERENT CONDITIONS OF CONFINEMENTS DUE TO CFRP LAMINATE ON THE STRENGTH AND DUCTILITY OF SLENDER RC CIRCULAR COLUMN BASED ON THE RESULTS OF NONLINEAR ANALYSIS,” MODARES TECHNICAL AND ENGINEERING, vol. -, no. 33 (SPECIAL ISSUE ON CIVIL ENGINEERING), pp. 33–44, 2008, [Online]. Available: https://sid.ir/paper/25015/en

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