Study of the Seismic Behavior of Steel Braced Frames After Fire

Buildings can be affected by special loads such as earthquakes, storms, fires or explosions, that each one can cause the destruction of the structure. In some cases, the structures may be affected by these loads Simultaneously, but there are not also any regulations in existing codes in this regard. Since many buildings have suffered small or large fires in the recent years in Iran, and on the other hand, Iran is located in a high risk zone of earthquakes, it is needed to control the seismic performance of the building after the fire experience can be considered as an important issue. In this regard, the studies have conducted so far have mostly focused on moment resisting frame structures, so in this paper, using ABAQUS software, the seismic behavior of steel braced frames structural system have been investigated. The results of the pushover analysis show that the ultimate strength and ductility capacity of the steel braced frames after fire can be significantly reduced, which is aggravated by increasing the number of floors.