Prediction of Shear Strength of Reinforced High-Strength Concrete Beams Using Compatibility-Aided Truss Model

Abstract

This study proposes an analytical model applicable to the shear analysis of reinforced high-strength concrete beams. The proposed model satisfies the equilibrium and compatibility conditions and constitutive laws of the materials. The proposed model is based on the fixed angle theory and allows the principal stress to rotate as the load increases, so that the RC beams can be analyzed more realistically. High-strength material models were used in the proposed model to consider the characteristics of high-strength concrete. The concrete shear contribution at crack surfaces was calculated from Mohr’s circle. The proposed model considers the effect of bending moment on shear by reducing the amount of longitudinal reinforcement resisting shear. To verify the accuracy of the proposed model, a total of 64 experimental results were collected from the literature. A comparison with previous experimental results confirmed that the proposed model can be predicted relatively accurately with an average of 0.98 and a coefficient of variation of 12.1%.

Reliable machine learning for the shear strength of beams strengthened using externally bonded FRP jackets

“…Several design guidelines and codes exist worldwide (fib Task group 5.1, 2019; ACI Committee 440, 2017; Construction C-AC on TR for. CNR-DT 200 R1/2013, 2013TR-55 CSTR, 2012;JSCE Japanese Society of Civil Engineers, 2000;Abuodeh et al, 2020;Ly et al, 2020;Chalioris et al, 2020;Benzeguir and Chaallal, 2021;Kim, 2021;Isleem et al, 2021). The lack of consensus is due to the following reasons:…”

Numerical Assessment on Continuous Reinforced Normal-Strength Concrete and High-Strength Concrete Beams

“…Numerous experimental [6][7][8][9][10], numerical [11][12][13] and theoretical works [14][15][16][17][18][19][20] have been carried out to examine flexural ductility of single-span reinforced HSC members. A few researchers have also evaluated the shear [21] and torsional behavior [22,23] of single-span reinforced HSC members. Previous research showed that in spite of the brittleness of HSC, reinforced HSC members with reasonably arranged steel bars exhibited favorable ductile ability.…”