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The loss of even one vertical support member can lead to catastrophic consequences and the progressive collapse of big portion or even the entire structure of the building. This report presents a computational study of a single-story, non-scaled 3D fragment of a high-rise concrete flat slab structure building with peripheral beams along the facade in case of dynamic failure of a column. The main objective is to examine alternative load paths for the transfer of stress from the peripheral beams to the columns, across the slab and its punching areas. In case of accidental failure of an outer column, the facade beams serve as prevention which reduces the redistribution of loads to the interior, ie. to the columns with critical slab punching areas. Research on the performance of peripheral beams and the key role of corner columns is the focus of this report.

Progressive Collapse of flat slab structures – key elements and connections