Analytical Study of Common Rigid Bolt and Weld Steel Connections under the Effect of Heat

One of the most important members of steel structure’s connection region is beam-to-column connection. Rigid connection in steel moment frame has special role in the behavior of these structures and the fire resistance of these connections can be important. In this article the behavior of three common types of rigid bolt and weld connections under the effect of heat were studied by the use of numerical finite element methods through ABAQUS software. The models verified by the use of an experimental model through elastic and plastic amplitudes up to collapse and during numerical results, the effect of large deformation in the nonlinear region has also been considered. The results show that the connection with the end plate had a better performance against heat than other connections. Also reduced stiffness and lateral buckling in this connection was less than other connections.