Deformation of multilayered physically nonlinear concrete slabs by quasi-static loads

Three-layer concrete slabs are considered where each layer is formed of its grade. These widely used in the construction industry, particularly agricultural buildings and structures; thus, calculating these under external loads forces caused by their weight an important relevant task. It assumed that concretes non-linearly formed, ratios between stresses strains taken as third-order polynomials with different coefficients for grades concrete. The supposed to be sufficiently thin, Kirchhoff-Lyav hypotheses valid. equations Genka-Ilyushin deformation theory state phase materials hybrid slabs. complete systems resolving obtained, solved Bubnov-Galerkin method, resulting algebraic numerically Maple mathematical package. graphs slabs' deflection values at point slab obtained. significant difference shown maximum deflections deformations without considering slab's weight.