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Volume Title: ICASGE2023

DOI: ICASGE-RCS

¹Mohamed Ghalla ; ²Ahmed Almaadawy; ³Rania Sera; ⁴Galal Elsamak

¹Civil Engineering Dept., Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, Egypt

²Civil Engineering Department, Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, Egypt.

³Eng. M.D. Student, Faculty of Engineering, Menofia University, Egypt

⁴Faculty of Engineering, Kafrelsheikh University, Egypt

The reinforced concrete (RC) T-shaped beams are being selected to be used as the main girders that support the lateral secondary precast beams or slabs which is one of the popular structural systems for many existing bridges and parking garages. This investigation presents numerically different strengthening strategies for RC T-beams based on finite element Modeling (FEM), in which ultra high performance fiber reinforced concrete (UHPFRC) plates are affixed to RC T-beam using epoxy adhesive to improve the flexural capacity. Two different experimental works of literature were selected in order to validate the beam numerical models. Beams were modelled using 2D shell element model to reduce the central processing unit (CPU) time and one half of beam was simulated to take the advantage of symmetry. The strengthening techniques included, two-sided strengthening and U-shaped strengthening technique. The FEM results showed that the U-shaped strengthening increased the ultimate load, stiffness, and ductility and changed the failure pattern to flexural.

flexural behavior; T-shaped beams; UHPFRC; strengthening; FEM

Reinforced Concrete Structures (RCS)