ANALYTICAL STUDY ON FLEXURAL BEHAVIOR OF REINFORCED CONCRETE BEAMS STRENGHTENED WITH FRP

Abstract

Reinforced concrete beams are a major member to transfer reinforced concrete slab loads to reinforced concrete columns in concrete building. Most failure patterns of reinforced concrete beams are concrete crushing in flexure zone or diagonal crushing in shear zone. Using hybrid continuous carbon fiber sheets is one of methods to increase the strength of RC beams. In this thesis a computation analytical finite element model FEM has been applied using ANSYS program version 18.1. Building Code Requirements for Reinforced Concrete (ACI 318 – 14) is used for comparison with FEM results. Many parameters considered; preloading percentage for RC beams (0% - 20% - 40% - 60% - 80% and 100%), type of hybrid continuous carbon fiber sheets (high modulus carbon sheets C1 - high modulus carbon sheets C7), number of hybrid continuous carbon fiber sheets and the length of hybrid continuous carbon fiber sheets (0.3 length of clear span – 0.6 length of clear span and the total length of clear span for reinforced concrete beam. The results of the FEM and codes provisions are illustrated in tables, figures and charts to explain the effect of each parameter on reinforced concrete beam.