Effectiveness of SRG in shear strengthening of deep and slender concrete beams

被引：0
作者：
Liu, Xiangsheng [1 ]
Thermou, Georgia E. [2 ]
机构：
[1] Univ Nottingham, Ctr Struct Engn & Informat, Dept Civil Engn, Nottingham NG7 2RD, England
[2] Univ Nottingham, Dept Civil Engn, Struct Engn, Nottingham NG7 2RD, England
来源：
STRUCTURES | 2025年 / 71卷
关键词：
Beam; Mortar-based Composites; Shear Strengthening; FRCM; SRG; Shear Span-to-Depth Ratio; TEXTILE-REINFORCED MORTAR; RC BEAMS; FRCM SYSTEMS; CAPACITY; BEHAVIOR; MEMBERS; DESIGN; FRP; TRM; PERFORMANCE;
D O I：
10.1016/j.istruc.2025.108197
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This study investigates Steel-Reinforced Grout (SRG) jackets' efficiency in enhancing the shear strength in Reinforced Concrete (RC) beams with various shear span-to-depth (a/d) ratios, comparing them with Carbon Fabric Reinforced Cementitious Mortars (CFRCM) and Steel Reinforced Polymer (SRP) jackets. Seventeen beams underwent monotonic loading to assess the impact of the textile layer number and jacket configuration for a/ d= 2.0 and 3.5. The results demonstrated that SRG, CFRCM, and SRP systems increased the shear strength by up to 124 %, 174 %, and 176 % for deep beams (a/d = 2.0) and 170 %, 215 %, and 221 % for slender beams (a/d = 3.5), respectively. Fully wrapped SRG and SRP systems shifted failure from brittle to ductile. An analytical model is proposed for predicting SRG strengthened beam shear capacity, accounting for the influence of a/d, with a correlation coefficient (R2) of 95.84 %.
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页数：15
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