Simplified evaluation method for anti-collapse performance of deferred bracing steel frame structures

In order to quantify the collapse resistance of low-ductility centrally braced frame structures under different design parameters, based on incremental dynamic analysis The effects of design parameters such as reserve bearing capacity, reserve stiffness, structural period, and strength reduction coefficient on the collapse resistance of low-ductility structures were analyzed. According to the calculation results, the calculation formula of collapse allowance of low ductility centrally braced steel frame structure under different parameters is established, and a simplified evaluation method of structure collapse resistance performance based on this formula is proposed. to provide a reference for the anti-collapse design of such structures.