Seismic Performance of Corrugated Web Composite Diaphragm with Through-joint Strengthened Flange
In order to overcome the deficiency of structural failure caused by brittle fracture of diaphragm through joints,the measures of"strengthening"and"weakening"were combined to make the plastic hinge move out,a new type of reinforced flange-cor-rugated web composite diaphragm through type beam-column joint was proposed.The finite element software ABAQUS was used to ex-plore the failure mode,stress distribution under low cycle reciprocating loads.And the influence of four parameters,namely the num-ber of ripples,the thickness of ripples,the thickness of reinforcing plates,and the length of reinforcing plates on the hysteresis curve,skeleton curve,and energy dissipation capacity of the new type of node was studied.The results show that the new type of node has good bearing capacity,with stress mainly concentrated at the weakened area of the corrugated web on the beam flange,and failure oc-curring on the side far from the weakened area,with no buckling deformation of the web.As the thickness of the corrugation and the length of the reinforcing plate increase,the bearing capacity of the new type of node increases and the energy consumption capacity de-creases.As the number of ripples increases,the bearing capacity and energy dissipation capacity of the new type of node increase.As the thickness of the reinforcing plate increases,the bearing capacity increases,and the energy consumption capacity first decreases and then increases.
corrugated webreinforced flangediaphragm through-jointseismic performanceplastic hinge
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