Experimental analysis of reinforced concrete shear deficient beams with circular web openings strengthened by CFRP composite

被引：84
作者：
Aksoylu, Ceyhun [1 ]
Yazman, Sakir [2 ]
Ozkilic, Yasin Onuralp [3 ]
Gemi, Lokman [4 ]
Arslan, Musa Hakan [1 ]
机构：
[1] Konya Tech Univ, Fac Engn & Nat Sci, Dept Civil Engn, TR-42075 Konya, Turkey
[2] Selcuk Univ, Ilgin Vocat Sch, TR-42615 Konya, Turkey
[3] Necmettin Erbakan Univ, Fac Engn & Architecture, Dept Civil Engn, TR-42000 Konya, Turkey
[4] Necmettin Erbakan Univ, Meram Vocat Sch, TR-42000 Konya, Turkey
来源：
COMPOSITE STRUCTURES | 2020年 / 249卷
关键词：
Carbon fiber reinforced polymer (CFRP); Circular hole; Damage analysis; Experiment; Reinforced concrete beam; Shear damage; Strengthening; VELOCITY IMPACT RESPONSE; RC BEAMS; R/C BEAMS; STRUCTURAL BEHAVIOR; FLEXURAL BEHAVIOR; DEEP BEAMS; PERFORMANCE; DAMAGE; DESIGN; GFRP;
D O I：
10.1016/j.compstruct.2020.112561
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this study, two methods of CFRP applications were utilized to strengthen the shear deficient beams with cir-cular holes and a comprehensive experimental program consisting of 11 1/2 scaled specimens was undertaken. The beams with hole diameter (D)/beam height ratio (H) of 0.30, 0.44, 0.64 ratios, symmetrically drilled in shear span were tested under vertical loading. D/H ratio of 0.30 did cause not only a decrease in load carrying capacity but also increased the ductility of the beam. However, significant decreases in load carrying capacities were observed as the hole diameters increase. The load carrying capacity and ductility were significantly improved owing to different CFRP configurations. The fact that the hole diameter and CFRP strengthening method are very important parameters for strengthening is observed. No CFRP strengthening alternative was successful in the beams with a D/H ratio of 0.64. A detailed macro and micro damage analyses are presented.
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页数：19
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