Open AccessNumerical simulation in diagrams for concrete deformation in computations of strength of reinforced concrete elements in deformation model
Author(s) -
V. A. Eryshev
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/687/3/033027
Subject(s) - curvilinear coordinates , deformation (meteorology) , diagram , computation , structural engineering , curvature , nonlinear system , geometry , materials science , mathematics , engineering , physics , composite material , statistics , algorithm , quantum mechanics
The paper establishes correlation between the integral parameters of nonlinear diagrams for concrete deformation in the versions of Russian and foreign regulatory documents applied to computation of strength of the reinforced concrete elements in the deformation model. It is recommended to use the fragments of the areas boarded by the branches of diagrams, as well as the coefficient of the diagram completeness as integral parameters of the diagrams for concrete deformations. The diagram area with the predetermined values of the element curvature is equivalent to the value of the ultimate strain in the compressed zone of concrete in the bendable elements under off-center compression, and the geometry of the stress diagram corresponds to this diagram. The study offers analytical expressions establishing the connection of strength and deformation parameters for the classes of concrete, which have standard values of deformation and stress in the reference points of curvilinear diagrams. The article presents the results of the computation and establishes the interconnection between the parameters of diagrams obtained by analytic correlation between stresses and deformations in the considered regulatory documents. There are recommendations for defining standard integral parameters of diagrams in calculating the strength of reinforced concrete elements using the deformation model.