Abstract
The paper presents a brief historical reference of the theory of reinforced concrete structures calculation and its. It shows that modeling of concrete deformations makes it possible not only to carry out calculations of durability and to determine reinforced concrete elements deflection under the estimated load, but also to analyze their a stress-strain state at each stage. The study suggests a new model of concrete deformation which makes it possible to make calculations of concrete elements with characteristics which are different from those given in specification documents. The researchers use the proposed model of deformation and calculate curved reinforced concrete beam bearing capacity. These calculations for normally reinforced elements do not considerably differ from the calculations given in the documents. All the main functional dependencies on the calculation stages are visualized.
Highlights
Reinforced concrete is a relatively new structural material
The structural mechanics methodology was adapted for reinforced concrete structures
The third stage of development of the theory of reinforced concrete started when models of concrete deformation were introduced both in Russian specification documents and foreign normative documents [4,5,6,7,8,9,10,11]
Summary
Reinforced concrete is a relatively new structural material. When it first appeared, the structural mechanics methodology (which in itself is calculations according to working stresses) was adapted for reinforced concrete structures. A professor of the Department of Military Engineering Academy, made a report on a fundamentally new approach to the determination of the strength of reinforced concrete structures on the basis of destructive load calculations. It was the world's first original solution of the problem of physical nonlinear nature of concrete and steel at their combined action. During his experimental data analysis, Arthur Loleit found out that the destruction of a bending reinforced concrete construction is a process which is long enough.
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