Shape Coefficient Study of the Extended End-plate Connections Base on Three Parameters Power Model

Abstract

Based on the three parameter power model, the finite element models of the extended end-plate semi-rigid connections are established by using FEA software ANSYS10.0, and the moment-rotation curve of the semi-rigid connections are obtained. By fitting the moment-rotation curve with numerical analysis method, two approximate formulas for calculating the shape coefficient of semi-rigid connections are obtained, and compared with the existing experimental data. The results shows that semi-rigid connections M-θ curves obtained by the fitted formula of shape coefficient are in consistent with the M-θ curve of FEA model and experimental data, which is based on the three parameter power model. The correctness and applicability of the approximate formula of shape coefficient are confirmed, and provides the theoretical basis for the design method of semi-rigid connections in practical engineering.