Numerical Analysis of Shear Strength Behavior of self-compact reinforced concrete Two-way Bubble Deck Slab with Shear Reinforcement

• Published in: IOP conference series. Materials Science and Engineering Vol. 518; no. 2; pp. 22050 - 22062
• Main Authors: Harba, Ibrahim S. I., Hammed, Mais A.
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.05.2019
• Subjects: Concrete slabs; Critical point; Decks; Deformation; Finite element method; Mathematical models; Numerical analysis; Punching; Reinforced concrete; Reinforcement; Shear strength; Ultimate tensile strength
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/518/2/022050

Bubble Deck is a new construction technology uses hollow plastic balls to eliminate the concrete in the middle part of the solid slab which has a little effect on the performance of the structure. So, this part significantly decreases the self-weight of the structure. Usually, the most critical point in the design of the bubbled slab is the design of a slab-column connection due to the concentration of loads and moments. This paper presents a numerical analysis by ABAQUS/2018 program through using the damage plasticity model to simulate the influence of the cavities due to using the plastic balls on the punching behavior and the effect of strengthening the punching zone by using different shear reinforcement systems on the maximum punching load and deformation capacity. Three slab specimens from the numerical analysis model have been simulated against the experimental results. The calculation of error in the model lies between 4% and 6%. Parametric of study have also been accomplished to realize the effect of the changes in shear reinforcement ratio with bubble slab. It has found that the ultimate strength and deformation capacity have increased when shear reinforcement ratio.