Structural response and resilience of posttensioned steel frames under column loss

Experimental and theoretical study of seismic and progressive collapse resilient composite frames

“…Previous researches show that, the collapse resisting mechanisms in pre-stressed systems can be different from conventional systems [42,64]. Specifically, according to the test results of CSCCF [48], when  91 mm, local buckling occurred on the upper flange of the beam in Section SE (whose position is similar to Section SE in Figure 14).…”

“…According to the study of Bruneau et al [36], a common effective method on improving the seismic resilience is to use high-performance components in structures. As frequently reported in the literature, post-tensioning (PT) tendons and replaceable energydissipating (ED) components are used to control the damage and residual deformation of structures [16,17,[37][38][39][40][41][42]. By contrast, investigations on the resilience of high-performance structures or components against progressive collapse are scarce [43].…”