Dynamic strength of building structures under explosive impact indoors
F.L. Doronin, associate Professor of hydraulics
and hydraulic engineering
Moscow State University of Civil Engineering
(National Research University)
Abstract. In the construction of residential and nonindustrial premises do not provide for their strength in the event of an explosion of domestic gas or gas cylinder. Fixing wall panels, partitions and floor slabs are not designed for the impact of the shock wave that occurs inside the premises. When designing structures, the calculation is reduced to determining the maximum external pressure. A numerical solution of the dynamics equation based on the theory of step integration is proposed, which allows determining the reaction of building structures in the elasticplastic stage of deformation development taking into account changes in the strength properties of materials during loading. The calculation method makes it possible to determine the maximum deformation of structures under the action of a destructive shock pulse, to estimate the sequence of reaching the time limit of the deformation state of floor slabs and wall panels under the action of dynamic load.
Key words: equation of dynamics, maximum deformation, elasticplastic state, wall panel, slab, numerical solution, explosive action, dynamic reaction.