Abstract
The article is devoted to the problem of developing more precise mathematical models of deformation of road of hard type, depending on various options of loading location and design features of the plate. The purpose of the work is to simulate the method of the finite elements of stressed-deformed state of cement concrete covering roads depending on various load location and design features of the plate. Object of study - cement-concrete to cover roads. Method of research: statistical analysis of scientific publications, technical and normative literature, finite element method. Taking into account that cement concrete coating of the road operates complex spatial load so it is advisable to use numerical method for determination of stressed-strained state of coating based on solving the theory equations Elasticity - Finite element method as the most versatile and efficient. Its peculiarity is a direct transition from the continuum to discrete analysis by dividing the area of an object that is investigated by a number of sub-areas and approximation of displacements fields, efforts, stresses, for example, using Engineering and settlement complex. Four variants of transport load are considered. As a result of the numerical modelling of the stressed-strained state of cement concrete covering for the first time obtained an analytical dependence for determination of tensile stresses at bending, arising of cement concrete coating of highways from Load actions taking into account the different settlement parameters, which allows to specify the general expression of the conditions of strength in calculating the cement-concrete coating taking into account the coefficient of frost resistance. This method allows assessing the strength of cement concrete covering of various categories with a given reliability and durability. KEY WORDS: CEMENT CONCRETE COATING, TENSION, DURABILITY, FROST RESISTANCE, DURABILITY.
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