Abstract

Results are given from finite element analysis of 18 strong-axis steel welded beam-column subassemblages with connection reinforcement. For the type of connection configuration considered, Federal Emergency Management Agency (FEMA) recommends connection forces be obtained by locating the plastic hinge at 1/3 depth of beam away from the end of connection reinforcement region. Also, a recent study pointed the location of plastic hinge to be at a distance of depth of beam from the column face. However, the present study shows that the plastic hinge is located at 1/2 depth of beam away from the end of connection reinforcement region. It is observed that connection design forces obtained from the present study are higher as compared to those obtained using the FEMA recommendations. A noniterative procedure for the design of beam-to-column connections using a truss for obtaining connection forces is also presented, which uses this location of the plastic hinge.

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