EXPERIMENTAL EVALUATION OF STRUCTURAL BEHAVIOR OF GUSSET-PLATE CONNECTION : Grobal enhancement of seismic performances of passive-controlled structures Part 1

Abstract

Buckling restrained braces (BRBs) show that the casing restricts global buckling which serves to balance the tensile and compressive forces in the brace and improve the energy dissipation and plastic deformation capacities of the brace. Nevertheless, the majority of these studies have tested isolated braces or simple subassemblies which neglect the influence of the framing components and the gusset-plate on the system performance. In this paper, three frame subassemblies with BRB were subjected to cyclic lateral loading. It was found that effective length of the beam shortened by the presence of the gusset-plate connections. It was indicating that critical section of the beam was moved to the toe of the gusset-plate. On the other hand, effective length of the column was hardly affected by the gusset-plate when square-tube section was used for the column.