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Volume Title: ICASGE2023

DOI: ICASGE-RCS

Mohamed Ghalla

Civil Engineering Dept., Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, Egypt

One of the widely used structural solutions for several existing bridges and parking garages is the use of inverted T-shaped beams as the primary girders that support the lateral secondary precast beams or slabs. In order to increase the shear capacity of reinforced concrete (RC) inverted T-beams, ultra-high performance fibre reinforced concrete (UHPFRC) plates are attached to the structure using epoxy adhesive, as shown in this paper's numerical comparison of various strengthening techniques. To verify the accuracy of the beam numerical models, two separate experimental works of literature were chosen. To minimise the amount of time the central processing unit (CPU) had to spend modelling beams, a 2D shell element model was used, and one half of the beam was simulated to benefit from symmetry. Two-sided strengthening, one-sided strengthening, and a U-shaped strengthening technique were among the strengthening methods. The FEA results demonstrated that the two-sided strengthening altered the failure pattern from shear to flexural and enhanced the ultimate load, stiffness, and ductility. However, one-sided strengthening only slightly improves ultimate load compared to two-sided strengthening and is unable to alter the control beam's failure pattern.

Inverted T-shaped beams; Ultra high performance fiber reinforced concrete; strengthening; Finite Element Modeling

Reinforced Concrete Structures (RCS)