Design of the Rigid Connection Between Multi-Cavity Concrete-Filled Wall with Pass-Through Bolts to Steel Beams

This paper reported a study on a new-type of the rigid connection between concrete-filled walls and steel beam, in which an end-plate of the same width as the wall thickness is welded on the edge of the CFT-wall, plus 4 side-plates welded onto the faces of the CFT-walls and the end-plate. Steel beams are welded to the end-plate using groove welds for the flange and fillet weld and high-strength bolts for the web. Plate plastic mechanism analysis method is carried out to determine the required thickness of the end-plate under the plastic moment of steel beam. Two cases are considered for the end plate, one is when the end plate has enough extended height, the other is the extended height equal to the slab thickness. The effect of the plastic moment of the side-plates has been considered in the proposed formulas. An extra joint factor 1.2 is introduced to include the effect of non-uniform distribution of longitudinal stress along the width of the beam flange to meet the demand of the seismic design demand of weak-beam-strong-connection. Finally shear strength check of the panel zone in the CFT-wall is introduced for the CFT-wall-steel beam connection.