A Study of the Behavior of Steel Moment Frame with Buckling Restrained Bracing (Review Article)

The use of bracing systems is one of the most suitable methods to control the lateral displacement of a structure as well as to improve the seismic rehabilitation of moment frames. The bracing systems used in the design of new systems and the rehabilitation of weak old structures are buckling restrained braces. In this study, the effect of this on the performance of steel moment frames is investigated. The use of buckling restrained braces has led to increased bracing stability and ductility under compression. Therefore, it creates a symmetry in the strength of the member under axial compressive and tensile load. For this reason, the full capacity of braces in tension and compression is used in the structural frame where braces are used double. Research results indicate that the first plastic hing in a moment frame without a restrained buckling brace is formed in base column and beam-to-column connection, which may lead to a crumbling failure