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- W3111994762 abstract "Thanks to a critical analysis of the currently known force and deformation models of reinforced concrete elements and structures deformation, the most important model provisions have been developed, which could claim to be a generalized one. It is proposed to base it on the deformation-force model of reinforced concrete to force effects resistance and the hypothesis of invariability in a unit volume and independence from the loading mode of the potential energy of a reinforced concrete element deformation. At the same time, the indicated hypothesis is accepted as an energy criterion for the reinforced concrete elements bearing strength exhaustion, which makes it possible to calculate the total and residual resources of these elements during their long-term operation.The main deformation and power parameters of the element state are interconnected not only by rigidity, but also by the potential energy spent on the reinforced concrete element deformation in its unit volume. The direct connection of the potential energy of a reinforced concrete element deformation with the generalized diagram parameters of its state is determined. Therefore, instead of deterministic and variational methods for calculating the reinforced concrete elements resource, a direct calculation of their energy resource is proposed based on such deformation characteristics as deflection or the step and width of normal cracks opening. Based on the flat sections hypothesis, these characteristics are related to the element curvature. The proposed model and calculation method also take into account the entire array of field studies results on the totality of visually identified defects and damages and the established strength materials characteristics.Calculated dependencies for determining the potential energy of a reinforced concrete element at any stage of its deformation are given. For one of the reinforced concrete beams, a theoretical prediction of long-term crack opening was performed and its results were compared with the experimental studies results." @default.
- W3111994762 created "2020-12-21" @default.
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- W3111994762 date "2020-11-27" @default.
- W3111994762 modified "2023-09-27" @default.
- W3111994762 title "BASICS OF ENERGY RESOURCE MODELING OF REINFORCED CONCRETE ELEMENTS AND STRUCTURES" @default.
- W3111994762 doi "https://doi.org/10.18664/1994-7852.191.2020.217292" @default.
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