Effect of the end plate thickness on seismic behavior of PEC column-steel beam joint

For learning the effect of the end plate thickness to seismic behavior of end plate connections in partially encased concrete composite column-steel beam joint,three model specimens under low frequency cyclic pseudo static loading were tested. By observing the failure process of each specimen and analyzing testing data,hysteresis curves,skeleton curves,energy dissipation capacity,ductility,stiffness and failure mode were concluded. The test results show that increasing the thickness of end plate can increase the turn ductility and energy dissipation capacity of nodes. There are two failure modes,which are the plastic hinge of beam and the fracture of end plate.