A Finite Element Analysis of Steel Beam–Column Joint with Replaceable Fuse Under Pseudo-Static Load
摘要
The application of the replaceable fuse at location where plastic hinge forms under gravity load is the current trend of research interest of researchers. This work is also consistent with advancements that deliver economic structural components to steel frame structures while achieving good energy dissipation and replaceability. An exterior sub-assembly of column and beam connection with an integrated replaceable component for steel frames is proposed. In minor earthquake activities, these links deliver significant rotational stiffness, whereas in moderate or strong seismic events, these structural fuses utilize the material strength after yielding for dissipation of energy. Three beams to column connection specimen with noble replaceable fuses are tested under quasi-static load. The seismic performance of the samples is studied in terms of moment capacity with respect to rotation, ductility, damage patterns, dissipation of energy, and failure modes. The results show that all three samples have stable symmetric hysteresis curve. However, the yielding happens in the replaceable component part under high amplitude-loading cycles. The beam and column have no damage and can be used safely for the other specimens. The beam–column sub-assemblage is subjected to a detailed numerical analysis with use of ABAQUS CAE software.