Special concentrically braced frames (SCBFs) located in regions close to earthquake faults may be subjected near-fault ground motions, often characterized by pulses with long periods. These could impose additional seismic demands on structures and increase the risk for structural collapse. Currently, there is limited research collapse of SCBFs under earthquakes. This paper uses a general simula...

The influence of composite girders on the modified buckling factor for columns was investigated in both braced and unbraced frames. girders' end conditions were represented as rigid hinged . Furthermore, based proposed stiffness parameter, derived formulation follows same assumptions standard effective length (K-factor). Moreover, suggested equations frames obtained using slope-deflection metho...