Oreskovich M. The stress-strain state and strength of damaged compressed reinforced concrete elements of circular cross-section

The object of study - damaged reinforced concrete columns of circular cross overcutting. The aim of the work is to determine the residual load-bearing capacity of damaged concrete elements of circular cross section based on the actual stress-strain state of the structure. Research methods - experimental studies of reinforced concrete columns with artificial damages under static loads on the basis of current regulations; analysis of publications on the subject of work, numerical and theoretical modeling, statistical analysis of the results of research. Scientific novelty of the results is to obtain new experimental data and study of the behavior of reinforced concrete columns of circular cross section damaged during the operation, under load; The effect of the parameters of the damage and set the degree of influence on the bearing capacity of the samples; An improved method for calculating the concrete columns of circular cross section which are under the influence of oblique eccentric compression due to damage during operation; further development of the method for calculating the position was central to compression of concrete elements. Experiential results of theoretical research have made it possible to create a method for calculating the damaged columns of circular cross section, which can be used in the practice of construction and reconstruction of buildings and structures, the calculation of the residual load-bearing capacity of reinforced concrete piles that allow a rational approach to the problem and repair the compressed strengthening of damaged items. The results of the thesis are used in the company "Pragma" in the survey and design of reinforcements damaged colonnade of columns of circular section in the building.