PREDICTIONS OF HYSTERETIC CHARACTERISTICS ON BEAM-COLUMN JOINTS IN STEEL REINFORCED CONCRETE STRUCTURES

Abstract

Based on the mechanical model, hysteretic characteristics of SRC beam-column joints were estimated theoretically. SRC beam-column joint was assumed to be composed of four fundamental elements; web panel, flange frame, concrete panel surrounded by flange frames and reinforced concrete panel outside steel flanges. The hysteresis loops of SRC beam-column joints were obtained by superposition of the hysteresis loop defined for each element The theoretical results gave a good agreement with the test results. Particularly, the recovering in the stiffness due to the closing of diagonal cracks of beam-column joints were predicted well by the proposed theory.