Protective design of rc framed building against blast loading through safe stand off distance approach

Abstract

▪ Multi-storey commercial or office buildings with glass cladding and open plan architect are considered, as alternative load paths from masonry walls and or cladding are not available.

▪ The buildings are analyzed for all kind of vehicle borne improvised explosives such as truck, large and small vehicles, and a method is proposed to estimate the blast load on a column.

▪ As the blast load causes localised damage, the blast damage analysis is carried out on an idealized column which is either pinned at both ends, or fixed at both ends, or pinned at one end and fixed at other end, using single degree of freedom (SDOF) and multi degree of freedom (MDOF) systems.

▪ Finally, safe stand off distance approach is proposed in which the minimum threat is measured in terms of the charge weight and the safe stand off distance is maintained. This approach provides a high level of protection.