Abstract

Results of experimental and theoretical studies of the dynamic effect of reinforced concrete structural system of building in case of its sudden structural adjustment caused by special accident action in the form of hypothetical removal of one of bearing structures are given. A zone of possible local failure of the structural system is modeled by a fragment of the structural system adjacent to that zone. For such a fragment called a substructure, an analytical solution of the problem for determining the time of dynamic loading of fragment elements is obtained. Evaluation of theoretical solution for determination of dynamic parameters of frame structural system at the considered action is performed by comparison of theoretical results with data of experimental studies of the fragment of a reinforced concrete multistory frame.

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