Ultimate strength of tubular T-joints reinforced with doubler plates after fire exposure

Two doubler-plate-reinforced tubular T-joint specimens were tested to failure under axial loading. One specimen was tested at ambient temperature and the other was tested after a heating and cooling process. The failure mode for both specimens was the overall flexural failure of the chord. Load-displacement curves revealed that the heating and cooling process did not exert any negative influence on the stiffness of the joints but did slightly...