Cyclic Out‐of‐Plane Buckling of Double‐Angle Bracing

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Cyclic Out‐of‐Plane Buckling of Double‐Angle Bracing

Author: Abolhassan Astaneh-Asl, Subhash C. Goel, and Robert D. Hanson | Size: 2.8 MB | Format: PDF | Quality: Unspecified | Publisher: ASCE | Year: 1985 | pages: 19

The behavior of double-angle bracing members subjected to out-ofplane
buckling due to severe cyclic load reversals is investigated. Nine full-size
test specimens were subjected to severe inelastic axial deformations. Test specimens
were subjected to severe inelastic axial deformations. Test specimens were
made of back-to-back A36 steel angle sections connected to the end gusset plates
by fillet welds or high-strength bolts. Five of the test specimens were designed
according to current design procedures and code requirements. These specimens
experienced fracture in gusset plates and stitches during early cycles of
loading. Based on the observations and analysis of the behavior of these specimens,
new design procedures are proposed for improved ductility and energy
dissipation capacity of double-angle bracing members which buckle out of plane
of gusset plates. Tests of four specimens, designed using proposed procedures,
showed significant improvement in their performances.

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