Bovin A. Finite Element Creep Analysis of Spatial Continual-Rod Reinforced Concrete Orthotropic Armed Systems

The thesis is devoted to the application of finite element method for spatial prestressed reinforced concrete systems with ribs, and also to the testing shallow convex shell on flat prestressed reinforced concrete contour - shell-slab. The matrix algorithm in displacement formulation of the method for arbitrary reinforced constructions is offered in view of a linear creep and shrinkage of concrete and based on usage of the numerical method of creep initial parameters. The full physical basic matrixes of rod, triangular and rectangular flat plate arbitrary reinforced concrete finite elements are obtained. The reliability of deduced algorithm is confirmed by comparison of the calculated and experimental data made by the author.