梁柱半刚性连接门式刚架静力荷载作用分析

he end-plate connection of beam-to-column in portal frame is a typical semi-rigid nodes connection. Non-linear analysis of four-door portal frame based on practical engineering calculation model will be done in this paper, simulating the semi-rigid node of end-plate connection by a rotary spring. The effects of portal frame’s displacements and internal forces from semi-rigid nodes are discussed by using the finite element software ANSYS. The example shows that semi-rigid end-plate connections have great influence on the displacements and internal forces in portal frame. It is recommended to take corresponding measures to consider the adverse effects of beam-to-column semi-rigid connecting in the design.