FEATURES OF DYNAMIC LOADS OF RC ELEMENTS OF STRUCTURAL SYSTEMS IN THE HYPOTHETICAL REMOVAL OF ONE OF THE BEARING STRUCTURES AND CRACKS FORMATION

Abstract

Analytical dependencies for determining of the parameters of the static-dynamic deformation diagram of RC elements of structural systems due to crack formation are given in the article. The moment-curvature dependence is assumed to be bilinear for bending non-tensioned and prestressed, as well as eccentrically loaded structures. Nonlinear deformation sections are assumed to be parallel for non-tensioned and prestressed structures. An algorithm for determining of the dynamic curvature in RC elements for the considered loading condition with the use of the dependencies is given. The results of the numerical analysis of the parameters of the static-dynamic deformation diagram are given using of a two-span three-story frame the beam of which are reinforced with two-way prestressed reinforcement.