Model of stressed-strained state of multi-layered reinforced concrete structure with the use of composite reinforcement

Abstract

The development in calculating reinforced concrete structure method covers a wide range of issues, including the expansion of fields such as application of new innovative materials which consist of concrete and reinforcement . In order to apply modern construction of multi-layer structure using concrete with different mechanical and physical characteristics, it is compulsory to conduct researches on the stressed-strained state of these structures under various types of load, which is determined not only by the stressed-strained state of the multi-layer reinforced concrete structure, but also by the properties of the reinforcement.The object of the study is multi-layer reinforced concrete structures of concrete with various physical and mechanical characteristics of materials - concrete and reinforcement under the influence of various types of loading. The subject of this study is the fluctuation in the stress-strain state under loadings of multi-layer reinforced concrete structures with the use of composite reinforcement. Studies related to the use of composite reinforcement in multi-layer structures have not been carried out, which significantly limits the scope of its application.The methods of investigation are based on numerical modeling of stresses and deformations of multi-layer reinforced concrete elements under the action of different combinations of loads. The use of modern software systems allows a number of studies, combining different combinations of loads and the variability of the strength and deformation characteristics of materials in structural concrete or in low strength concrete for the middle layer and various types of metal or composite reinforcement . In order to precisely calculate and measure these materials, the physical and mechanical properties of materials are used, which are determined on the basis of normative data or experimental studies. Numerical simulation makes it possible to compare the results obtained and construct theoretical dependencies in a wide range of specified parameters for constructing cross sections of multi-layer reinforced concrete elements. The range of this research is limited in the short-term load effect of reinforced concrete.The obtained scientific results allow determine rational parameters for modeling various design solutions of multi-layer reinforced concrete structures. The practical importance of the research will expand the areas of rational use of multi-layer reinforced concrete structures and ensure safe operation throughout the life cycle of buildings and structures using multi-layer structures.