| Beam-column end-plate connections are widely used in portal frame structures, diagonal end-plate connection is one kind of them. As this kind of connection is semi-rigid, and the member of beam and column is permitted to subject local buckling, the mechanic property of the connection is very complicate. So this article performed finite element analysis on its behavior under cyclic loading.Finite element models of three half-scale test specimens under cyclic loading were established by considering contact between end-plates, bolt pretension, and material nonlinearity firstly. The model was verified by comparing the numerical results of bearing capacity, rotation rigidity, and failure mode with test ones.Secondly,10 analysis models of diagonal end-plate beam-column connection were set up to study the main influencing factors, such as diameter of bolts, arrangement of bolts, thickness of end-plate, stiffener of end-plate, on their behaviors, including bearing capacity, rotational rigidity, failure mode, distribution of bolts' tension, and stress distribution in end-plate.Finally, based on the analysis results and present relevant codes, some suggestions were put forward to be referred in practice design.
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