Abstract
The method of experimental and numerical studies of reinforced concrete frame structures with crossbars reinforced with inclined rods under special influences is given. The main objective of these studies was to determine the nature of deformation, cracking and destruction of such structures under special impact caused by the sudden removal of one of the structures and, as a consequence, the redistribution of force flows in them. To increase the survivability and protection of the studied structural system from progressive collapse, with a quantitative and qualitative change in the forces in its elements, it is proposed to install transverse reinforcement from inclined reinforcing rods in two mutually perpendicular directions on the supporting sections of the frame system crossbars. The parameters of such reinforcement and the parameters embedded in the design model of the frame structure under consideration for static loading at the first stage and dynamic loading at the second stage are determined by numerical modeling using the Ansys software package. On this basis, the justification of the adopted design decisions of frame structures for the development of a program for conducting experimental studies of such structures under special influences was carried out.
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