Residual resource of reinforced concrete structures under dynamic loads in conditions of operational wear

An improved method for calculating reinforced concrete structures has been developed, based on the fundamental principles of the modern phenomenological theory of a non-linearly deformable elastic-creeping body, which takes into account tensor nonlinearity and rheology of deformation together with non-force operational factors. The influence of reinforcement in a three-axis stress-strain state with the condition of joint deformations of concrete and reinforcement is analyzed. Mathematical relations are derived that make it possible to formulate equations for design stresses in reinforced elements. The basic phenomenological equations describing vibration effects are presented, which make it possible to determine the operation of reinforced concrete elements both without cracking and in its presence. An algorithm for linearization of the problem based on integral estimates is proposed, which provides for the fixation of corrosion processes and vibration.

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