Investigations on the effect of Reinforcement in exterior beamcolumn Joints under reversal loading

Abstract

Beam column joints are recognized as the most critical and newlinevulnerable zone of reinforced concrete RC moment resisting structure newlinesubject to seismic loads During an earthquake global response of the newlinestructure is mainly governed by the behaviour of the joints If the joints newlinebehave in a ductile manner the global behaviour generally will be ductile newlineReinforced concrete structural frame connections joints are newlineclassified into two categories as per ACI 352 Type 1 and Type 2 based on newlinethe loading conditions for the connection and the anticipated deformations of newlinethe connected frame members when resisting lateral loads Type 1 connection newlineis composed of members designed to satisfy strength requirements without newlinesignificant inelastic deformation newline newline