System-based reliability analysis of stainless steel frames under gravity loads

Abstract Current structural codes for steel and stainless structures such as AISC 360-16, AISC 370-21, AS/NZS 4100 Eurocode 3 are based on the traditional two-step member-based design approach, in which internal actions first obtained from a analysis, usually elastic, strength of each member connection is subsequently checked using standard. However, most recent versions these standards already incorporate preliminary direct, or one-step, system-based alternative, design-by-analysis concept allows evaluating directly numerical simulations, although their current form do not provide reliability requirements systems. Therefore, it necessary to build rigorous framework investigate acceptable target indices systems adequate system safety factors resistance factors. While this has been developed advanced Finite Element analysis hot-rolled cold-formed carbon years Direct Design Method (DDM), does exist structures. This paper presents an extension DDM structures, calibrations presented six portal frames under gravity loads covering three common families different failure modes simulations. From derived calibrations, suitable ? M , s ? proposed direct European, US Australian frameworks loads.