CALCULATION OF THE STRESS-STRAIN STATE OF REINFORCED CONCRETE ELEMENTS UNDER THE INFLUENCE OF LOAD AND HIGH TEMPERATURE
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Abstract
Methods for calculating the parameters of the stress-strain state of reinforced concrete elements under the influence of load and high temperature are constantly being improved. The nonlinear deformation calculation model for building structures (reinforced concrete, reinforced concrete, stone and reinforced stone, wooden) under force, temperature, humidity and long-term effects allows us to obtain the parameters of their stress-strain state at any stage of deformation, to take into account the physical nonlinearity of the materials, the stage of effects. The analysis of studies of the influence of elevated (from 50 °C to 200 °C inclusive) and high (over 200 °C to 1400 °C) temperatures on the parameters of the base points of the diagrams of concrete deformation and reinforcement of reinforced concrete elements. Modeling of the stress-strain state of the reinforced concrete element was performed taking into account the forced temperature and humidity deformations of the materials. Verification of the proposed methodology for calculating the parameters of the stress-strain state of reinforced concrete elements under the influence of load and high temperature, as well as their fire resistance, has been carried out.
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References
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