Abstract
This paper describes experimental investigation on three square tubed-reinforced-concrete (TRC) column to reinforced concrete (RC) beam joints with internal diaphragms subjected to cyclic loading, where width-to-thickness ratios of the steel tube in the panel zone and levels of axial load were selected as test parameters. Two failure modes, namely, joint shear failure and beam failure + bond failure were observed in the current test. Test results showed that the proposed composite joints exhibited favorable seismic performance.
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