Calculation of the load-bearing capacity of the bent plates taking into account the diagrams of concrete deformation

Objective . The influence of the nature descending branch concrete compression and stretching diagrams on ultimate load-bearing capacity bent cross-section reinforced structures under various loading conditions close to destruction according nonlinear finite element model is investigated. Method. solution performed by method in a physically formulation using N.I.Karpenko's deformation theory. Deformation are used with different steepness branch. Calculations step-by-step iterative successive loads layered model. Result results numerical calculation slab elements physical nonlinearity presented. Conclusion insignificant plate bendable has been found use simplified diagram dependencies fully justified for calculations