Civil Engineering and Architecture Vol. 12(2), pp. 822 - 839
DOI: 10.13189/cea.2024.120212
Reprint (PDF) (2491Kb)

Assessment of Two-sided Concrete Corbel with Different Structural Forms Using Finite Element Modeling

Aristotle L. Medina ^*, Gilford B. Estores
School of Civil, Environmental and Geological Engineering, Mapua University, Philippines

ABSTRACT

Researchers worldwide have conducted studies to investigate the strength of concrete corbels, either through experimental tests or finite element simulations. The primary objective of these studies has been to determine how concrete corbels behave under different conditions. However, there has been a lack of research focused on identifying the most efficient shape of two-sided concrete corbels for supporting structural elements like beams and slabs using finite element modeling. Thus, this study aimed to determine the optimal corbel shape for supporting structural elements under different loading conditions. Three double-sided concrete corbels with varying structural forms were analyzed using finite element analysis and a parametric study was conducted to evaluate the corbel's structural response for different shapes. The parameters considered included concrete strength, modeling type, loading condition and shear span-to-depth ratio (a/d). Based on the findings, an increase in concrete strength led to an improvement in the load-carrying capacity of the corbel. Nonetheless, it was observed that with an increase in a/d, the corbel's load-carrying capacity decreased, indicating that the distance between the point of load application and the nearest support has an impact on the ability to support loads. This is due to the fact that a low a/d ratio in a corbel leads to uniform distribution of shear stresses across its depth, enhancing effective resistance. In contrast, a high a/d ratio concentrates shear stresses near the face closer to the load, reducing the effective resisting area and capacity. Ultimately, a rectangular shape was found to be the most efficient for double-sided corbels. Therefore, the cross-section of the corbel should be rectangular to achieve the maximum load-carrying capacity and minimum deformation. Furthermore, a regression model was proposed based on the finite element simulation results to predict the maximum load capacity and deformation of the three corbel cases.

KEYWORDS
Two-sided Concrete Corbel, Finite Element Modeling, Parametric Study, Regression Modeling

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Aristotle L. Medina , Gilford B. Estores , "Assessment of Two-sided Concrete Corbel with Different Structural Forms Using Finite Element Modeling," Civil Engineering and Architecture, Vol. 12, No. 2, pp. 822 - 839, 2024. DOI: 10.13189/cea.2024.120212.

(b). APA Format:
Aristotle L. Medina , Gilford B. Estores (2024). Assessment of Two-sided Concrete Corbel with Different Structural Forms Using Finite Element Modeling. Civil Engineering and Architecture, 12(2), 822 - 839. DOI: 10.13189/cea.2024.120212.