PRACTICAL MODELING OF THE STRESS-STRAIN STATE OF REINFORCED CONCRETE ELEMENTS UNDER FORCE AND TEMPERATURE INFLUENCES
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Abstract
The results of the practical application of a nonlinear deformation calculation model for determining the parameters of the stress-strain state, calculating the strength and crack formation force of normal separation using the example of centrally stretched reinforced concrete elements under force and temperature influences are presented. The analysis of studies of the influence of negative temperatures on the parameters of the base points of the diagrams of deformation of concrete and reinforcement of reinforced concrete elements is carried out. Modeling of the stress-strain state using the example of centrally stretched reinforced concrete elements was performed taking into account forced temperature deformations due to the difference in the coefficients of temperature deformations of concrete and reinforcement. The distribution of relative deformations and stresses in the cross section of centrally stretched reinforced concrete elements during the formation of cracks of normal separation under the influence of negative temperatures in the range from (+15°C) to (–165°C) is given. The verification of the proposed methodology for calculating the strength and cracking force of centrally stretched reinforced concrete elements under force and temperature influences has been carried out.
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References
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