Progressive collapse resisting capacity of moment frames with infill steel panels

In this paper the progressive collapse behaviour of a moment frame with infill steel panels is evaluated using nonlinear static pushdown analysis. The analysis model is a two storey two span structure designed only for gravity load, and the loaddisplacement relationship is obtained with the centre column removed. To obtain local stress and strain as well as the global structural behaviour, a finite element analysis is conducted using ABACUS. Through the analysis the effect of the span length and the thickness of the steel plate on the progressive collapse behaviour of the structure is investigated, and the effect of the dividing the infill panel using stud columns is also studied. According to the analysis results, the thickness of the panels required to prevent progressive collapse increases as the span length increases, and as the number of panel division increases the progressive collapse resisting capacity increases slightly but the effect is not significant.