Formulation of initial connection stiffness and ultimate moment capacity of steel beam-to-column angle connections

In this paper, the initial connection stiffness and ultimate moment carrying capacity of semi-rigid steel beam-to-column angle connections were formulated. In the formulation, a simple analytical procedure for modeling each connection type was used. Three parameter power model taking the values estimated here which was proposed Richard and Abbott was applied to compare with the experimental moment-rotation test data. Putting a suitable shape parameter, three power model can represent the characteristics of the experimental data