Behaviour of reinforced concrete interior beam-column joints designed using high strength concrete and steel
Author: Xian Zuo Xin, University of Canterbury (supervised by R Park and H Tanaka)
Paper number: 201 (EQC 1991/18)
Technical Abstract
This report deals with the behaviour of interior beam-column joints of reinforced concrete ductile frames using Grade 430 steel bar under simulated earthquake loading.
Six specimens with symmetrical or unsymmetrical longitudinal reinforcement from Grade 430 steel bar were tested to investigate the anchorage performance of the beam bars passing through the joint core. The experimental results indicated that the use of high-strength concrete was beneficial. The effect of the ration of area of bottom steel to top steel was found to be significant when determining the anchorage of beam bars in the joint core.
Based on the test results and other previous research works in the University of Canterbury, a recommendation was proposed for a limitation on the beam bar diameter of beam bar passing through an interior beam-column joint.
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