An experimental and analytical investigation of reinforced concrete beam-column joints strengthened with a range of CFRP schemes applied only to the beam

This paper investigates the experimental and analytical behaviour of beam-column joints that are subjected to a combination torque, flexural direct shear forces, where different Carbon Fibre Polymer (CFRP) strengthening wraps have been applied only beam. These wrapping schemes previously determined by research community as an effective method enhancing torsional capacities simply supported reinforced concrete beams. In this investigation, four 3/4-scale exterior were combined monotonic loading; three beam employed strengthen region joint. The suggests series rational formulae, based on space truss mechanism, which can be used evaluate joint demand beams wrapped in these various ways. Further, iterative model, average stress-strain method, has introduced predict strength. proposed approaches show good agreement with results. outcomes along adopted methods reflect consistent influence ratio, interaction between strut capacity fibre orientation failure mode distortion levels. A large rise force resulting from stresses generated forces is demonstrated leads sudden-brittle failure. Likewise, increases beams’ main steel rebar strains identified at column face, again influenced load interactions systems used.