A Review on Progressive Collapse with All-Steel Buckling Restrained Braced Frames

Steel braces are adopted in framed structures for providing adequate resistance to lateral loads like seismic loads. Under seismic loads, braces tend to buckle and under periodic loading, and they have less strength, stiffness, and resistance. All-steel buckling restrained braces are found to be excellent in dissipating energy caused due to catastrophic events. Recently, progressive collapse of framed structures has become an important topic of research since many buildings have collapsed due to this event. The structural designers require to design structural members to carry and dissipate huge stresses caused due to catastrophic loading. Although there exist different types of bracing systems like concentric bracing, eccentric bracing, and buckling restrained bracing, not many studies have been conducted to study the response of these bracing systems under progressive collapse scenario. In order to study the behaviour of all-steel buckling restrained braced frames towards progressive collapse, a brief review of literatures was conducted. Also, a review was conducted to determine the resistance offered by different types of braces when subjected to progressive collapse.