3D non-linear finite element analysis of top-seat-angle steel connections

An approach to refined parametric three-dimensional (3D) non-linear analysis for semi-rigid steel beam-column connections of top-seat-angle was presented.Models drawn from a previous experimental study of top and bottom seat angle connections were generated in order to compare the analyses with test results,with good prediction shown by the 3D refined models.The effect of several geometrical and material parameters on the overall moment-rotation response was analysed,such as the bolt pretension,friction coefficients,thickness of the angle and the bolt gage on the column leg of the connection angles.