EXPERIMENTAL AND NUMERICAL INVESTIGATION OF I-SECTION LIGHTWEIGHT CONCRETE DEEP BEAMS STRENGTHENED WITH CFRP FAILING IN SHEAR
MUTHANNA JOURNAL OF ENGINEERING AND TECHNOLOGY (MJET)
Riadh A. Abass
Professor, Dept. of civil engineering, College of engineering, Al.Muthanna University
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Mustafa Sh. Zewair
Ass. Lecturer, Dept. of civil engineeri, College of engineering, University of Basrah
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The experimental program consisted of testing four I-section reinforced concrete deep beams strengthened with CFRP strips made from lightweight concrete (porcilinate). The experimental program variables include configurations of CFRP. Experimental results obtained from the adopted strengthening CFRP techniques show a significant improvement in the behavior and shear carrying capacity of reinforced concrete deep beams. A stiffer loaddeflection response is observed for beams strengthened with CFRP strips as compared with response of control deep beam and the inclined CFRP strips give better enhancement than the vertical CFRP strips in ultimate load, deflection and crack width. Nonlinear finite element analysis is performed using the ANSYS-11. The Comparison between experimental results and numerical results indicates that numerical models can successfully used to simulate similar cases. Where the ultimate numerical load to ultimate experimental load ranged between (88%-96%). And good agreement for (load–deflection) curves between numerical and experimental.
Keywords: ANSYS, CFRP, I-section, Lightweight, Strengthened.