Load carrying capacity of flat double-layer space structures majorly depends on the structures' imperfections. Imperfections in initial curvature, length, and residual stress of members are all innately random and can affect the load-bearing capacity of the members and consequently that of the structure. The double-layer space trusses are susceptible to progressive collapse due to sudden buckli...

Abstract Structure collapse, on the other hand, is a very complicated phenomenon involving considerable nonlinearity and variety of mechanical interactions. It should be thoroughly examined through experiments numerical simulations to prevent occurrence from occurring. When initial local failure small portion structure takes place it leads spread that damage neighbor elements in chain reaction ...