CFRP-retrofitted RC exterior beam-column connections under cyclic loads

Abstract

This study contains the results of experimental tests performed at the University of Queensland in order to evaluate the ability of CFRP wraps in strengthening an exterior beam-column connection subjected to cyclic loads. For this purpose, two specimens were designed based on the earthquake requirements of AS3600. One of these specimens was then wrapped with FRP while the other left untreated. Specimens were then tested to failure under a displacement-controlled regime. The displacement control had an ascending displacement amplitude as a multiplier of the yield displacement with a variable direction. The retrofitted specimen was found to behave in a satisfactory manner and was able to relocate the position of the plastic hinge away from the face of the column. The Hystersis curves, modes of failure, additional strength gain, etc. are presented in this paper.