Finite Element Analysis of Glass Fiber-Reinforced Polymer-(GFRP) Reinforced Continuous Concrete Beams

Abstract

Fiber-reinforced concrete (FRC) is a competitive solution for the durability of reinforced structures. This paper aims to observe the moment redistribution behavior occurring due to flexural and shear loading in Glass Fiber-Reinforced Polymer- (GFRP) reinforced continuous concrete beams. A rectangular cross-section was adopted in this study with dimensions of 200 mm in width and 300 mm in depth with a constant shear span-to-depth ratio of 3. The reinforcement ratio for the top and bottom were equal at sagging and hogging moment regions. A finite element model was created using Analysis System (ANSYS) and validated with the existing experimental results in the literature review. Based on the literature review, the parametric study was conducted on twelve beam specimens to evaluate the influence of concrete compressive strength, transversal GFRP stirrups ratio, and longitudinal reinforcement ratio on the redistribution of the moment in beams. Several codes and guidelines adopted different analytical models. The Canadian Standards Association (CSA) S806 adopted the modified compression field theory in predicting the shear capacity of the simply supported beams. Recently, various researchers encountered several factors and modifications to account for concrete contribution, longitudinal, and transverse reinforcement. A comparison between the predicting shear capacity of the generated finite element model, the analytical model, and the existing data from the literature was performed. The generated finite element model showed a good agreement with the experimental results, while the beam specimens failed in shear after undergoing significant moment redistribution from hogging to sagging moment region. The moment distribution observed about 21.5% from FEM of beam specimen GN-1.2-0.48-d, while the experimental results achieved 24% at failure load. For high strength concrete presented in beam specimen GH-1.2-0.63-d, the result showed about 20.2% moment distribution, compared to that achieved experimentally of 23% at failure load.

Theoretical and Experimental Substantiation of the Efficiency of Combined-Reinforced Glass Fiber Polymer Composite Concrete Elements in Bending

“…Finally, from a price point of view, the cost of our elements is reduced and is more economical, as confirmed by our economic analysis. This is in good agreement with the results of the authors [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]35,[37][38][39][40][41][42][43][44][45][46][47][48][49][50].…”

“…Finally, the works of the authors involved in the study of polymer composite concrete bending elements (beams) [2,5,8,[11][12][13]15,16,35,[37][38][39][40][41][42][43][44][45][46][47][48][49][50] were of particular interest for the development of this study. To improve the performance of bending elements, researchers studied the following for their reinforcement: fiber-reinforced polymers (FRP), glassreinforced polymers (GFRP), composite polymers, reinforcement with jute-polyester fiber (JPFRP), polymers, reinforcement with basalt fiber (BFRP), carbon (CFRP) and aramid (AFRP) fibers.…”

Investigating the Impact of Inclusions on the Behavior of 3D-Printed Composite Sandwich Beams

“…A correlation between inclusion size, position, material type, and its effect on the mechanical behavior of the end product needs to be inspected for a sound understanding of the process. The observation of moment redistribution behavior occurring because of flexural and shear loading in glass fiber-reinforced polymer and reinforced continuous concrete beam was conducted using the FEA approach [36]. The Artificial Neural Network (ANNs) was used to examine and predict the structural responses of externally bonded FRP regarding how it strengthens RC T-beam under combined torsion and shear effect.…”