Gusset Plate Connections for Naturally Buckling Braces

On‐line hybrid test method for evaluating the performance of structural details to failure

“…Although the seismic behavior and design of gusset plate connections in steel braced frames have been main research topics for many years in the field, the ultimate capacity of gusset plates in rotational ductility and strength has not been fully clarified yet. This is because the bracing members often fracture before the bracing connection fails . After fracturing of the brace at midlength, the brace member no longer transfers any deformations to the gusset plate connection and the ultimate capacity of the connections cannot be determined experimentally.…”

“…This is because the bracing members often fracture before the bracing connection fails. [15][16][17][18][19] After fracturing of the brace at midlength, the brace member no longer transfers any deformations to the gusset plate connection and the ultimate capacity of the connections cannot be determined experimentally.…”

“…Two hydraulic jacks controlled for applying axial loads and rotations ensure physical continuity between the tested connections and the simulated bracing member. The test method acquires data at the ultimate state of connection failure that cannot usually be recorded in conventional test schemes (test of entire bracing system) because of earlier fracture of bracing members (ie, less‐ductile segment in Figure ) . The proposed test method offers an experimental platform for evaluating the performance and quantifying the actual ultimate strength and deformation capacity of individual structural details, such as bracing connections, to failure.…”

An Innovative Steel Damper with a Flexural and Shear–Flexural Mechanism to Enhance the CBF System Behavior: An Experimental and Numerical Study

“…Buckling of the compressive diagonal member of the CBF system leads to reduced ductility. When the CBF systems are subjected to cyclic load, due to the buckling of the diagonal member under compressive loading, they show undesirable ductility with low energy dissipation capacity [5][6][7].…”

Full-scale testing of naturally buckling steel braces and evaluation of partially rib-strengthened sections to cumulative damage

“…Recently, the authors and co-workers developed an alternative brace known as Naturally Bucking Brace (NBB) [15][16][17][18] with the goal to eliminate the above drawbacks. The main advantages of NBBs are: (1) the relatively high tensile post-yielding stiffness, (2) the delay of mid-length local buckling, thereby fracture, without using external buckling restraints or large steel sections, and (3) the multiple yielding strengths combined with an axial-flexural behaviour that are useful to satisfy multiple seismic performance objectives.…”