Joint work of layers of different strengths in reinforced concrete multi-layered construction at compression

Abstract

Abstract Currently, a lot of attention in the construction industry is given to the issues of ensuring the reliability of reinforced concrete structures at all stages, both manufacturing, design and operation. In this regard, this article conducted a study of the reliability and durability of multi-layered structures with a monolithic connection of layers in order to reduce the own weight of such elements and the cost of construction and repair. The method of determining the average strength in the section of the element is presented, which allows the forecast of the durability of multi-layered reinforced concrete structures and allows to determine the overall work of each component, regardless of their number and the moment connection time, as well as defects in the manufacture and damage caused during operation, various physical-mechanical and reological characteristics of materials of layers of multi-layered structure, actual tense-deformed multi-layered parts as they work together. The presented method of calculation is based on the fundamental dependence of stresses and deformations in concrete, applied to a compressed multi-layered element.