The Effect of Geometrical Imperfection and Strain Hardening on the In- Elastic Behavior of the BRB and SCBF Bracing Systems.

In this thesis the nonlinear-inelastic behavior of two braced frame systems (special concentric, SCBF, and buckling restrained, BRBF) have been investigated. By choosing sample structures. These structure have been analyzed and designed by current standards, their push-over and cyclic analysis were performed using opensees software. The comparison of results confirms the more stable and ductile behavior of the BRBF. In addition, the effect of initial imperfection of brace element in SCBF and the variation of strain hardening parameter has been verified.