Методика розрахунку жорсткості плосконапружених залізобетонних складених конструкцій

Abstract

The thesis for obtaine the scientific degree of the candidate of technical sciences оn specialty 05.23.01 – Building constructions, buildings and structures. – National Aviation University. – Kiev, 2015. The thesis is devoted to developing the method of calculating the rigidity of flat-strained reinforced concrete composite constructions based on the proposed classification crack and working conditions that can significantly modify the parameters of hardness on the actual development schemes and disclosing various cracks, the presence of disturbances in the seam between the concrete incompatible strain of concrete and reinforcement and the effect of concrete discontinuity. The relevance of the topic, scientific novelty and practical importance are substantiated in the introduction. Here is shown the general characteristics of the thesis. The research works are analyzed in the first section. This works are carried out in the framework of the development of a methodology for calculating the rigidity of flat-strained reinforced composite constructions, including composite, based on which are justified the tasks of further researches. The experimental studies of flat-strained reinforced composite constructions were performed to verify the proposed method of calculation and to its founding working hypotheses that are listed in the second section. The displacements are finding for the study of rigidity due to the presence of various cracks; the width of their opening along the entire profile of the crack; changing the distance between the cracks and length between cracks as the load increases (with verification of multi-level process of their formation), deformations of concrete on the crack along the main reinforcement for the effects of discontinuity and deformations of the concrete in the vicinity of the seam between concrete.