STRENGTHENING OF RC COLUMNS USING MULTI DIRECTIONAL FRP COMPOSITES

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HABIBPOUR M.; FARHANG F.

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Paper Information

Journal: JOURNAL OF CONCRETE RESEARCH Year:2016 | Volume:8 | Issue:2 Page(s): 101-115

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Title

STRENGTHENING OF RC COLUMNS USING MULTI DIRECTIONAL FRP COMPOSITES

Author(s)

HABIBPOUR M. | FARHANG F. | Issue Writer Certificate

Keywords

CONFINEMENTQ2

CIRCULAR RC COLUMNQ2

INCREASING DUCTILITYQ2

STRENGTHENQ2

MULTI DIRECTIONAL COMPOSITESQ2

Abstract

The most common method of STRENGTHENing columns with FRP is confining their external environment. Confining is effective for compression members and use for increase load carrying capacity or for increase ductility. The main target in this research is investigation STRENGTHENing of RC columns with multi directional FRP composites. For this purpose first, 3 available experimental specimens were modeled in ABAQUS software. So, accuracy of this modeling proved, by Comparison and proximity the result of experimental and software. Then 18 analytical specimens were modeled with considering variables such fiber gender, direction of composites layers and percent of longitudinal steel of column section, in ABAQUS software. Analytical specimen divided to the two groups, half of them with 2 percent longitudinal steel and the other half with 4 percent steel. In every group were considered a specimen without STRENGTHENing, four specimens confined with CFRP sheets and four specimens confined with GFRP sheets. Beside specimens of every group STRENGTHENed with composite layers in different directions 0, 0, 0 degrees and 90, 0, 90 degrees and -45, 45, 0 degrees and -45, 45, 90 degrees. The finite elements analysis results of these specimens shows that multi directional FRP composites increases 1.34 to 2.77 times the axial load carrying capacity of STRENGTHENed columns and 5.5 to 13 time their ductility. STRENGTHENing by FRP composites with layers in direction of -45, 45, 0 degree, is good method for increasing the ductility of columns. Also effect of STRENGTHENing the specimens with two percent steel section are 8 to 16 percent more than specimens with four percent steel section.

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APA: Copy

HABIBPOUR, M., & FARHANG, F.. (2016). STRENGTHENING OF RC COLUMNS USING MULTI DIRECTIONAL FRP COMPOSITES. JOURNAL OF CONCRETE RESEARCH, 8(2), 101-115. SID. https://sid.ir/paper/358925/en

Vancouver: Copy

HABIBPOUR M., FARHANG F.. STRENGTHENING OF RC COLUMNS USING MULTI DIRECTIONAL FRP COMPOSITES. JOURNAL OF CONCRETE RESEARCH[Internet]. 2016;8(2):101-115. Available from: https://sid.ir/paper/358925/en

IEEE: Copy

M. HABIBPOUR, and F. FARHANG, “STRENGTHENING OF RC COLUMNS USING MULTI DIRECTIONAL FRP COMPOSITES,” JOURNAL OF CONCRETE RESEARCH, vol. 8, no. 2, pp. 101–115, 2016, [Online]. Available: https://sid.ir/paper/358925/en

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