Kovtunenko O. Analysis of the statically indeterminate reinforced cocrete frame structures with consideration of processes cracking

Object of research - statically indeterminate reinforced concrete structures that are widely used in the construction of buildings and structures of various purposes; goal - create a methodology for assessing the stress-strain state and bearing capacity of reinforced concrete frame structures with short-term effect of the load with consideration of nonlinear work of materials; methods - numerical-analytical method of boundary elements, the deformation theory of the reinforced concrete cross-sections work; results - the variant of the deformation model of the normal cross-sections of reinforced concrete bending elements, based on the deformation theory is proposed; the method of creating of linearized diagrams "bending moment - curvature" of the cross-sections deformation of reinforced concrete elements is developed; the method that allows to numerically predict the stress-strain state of statically indeterminate reinforced concrete frame structures with consideration of the formation of normal cracks in the elements is developed; novelty - method and algorithms for automating the formation of the matrix in the analysis of frame structures using the numerical-analytical method of boundary element are developed; a model of work of the cross sections of bending reinforced concrete elements, based on the deformation theory, is formalized; a method of creating of linearized diagrams "bending moment - curvature" of deformation of the cross sections of reinforced concrete elements is developed; method and programs that allow numerically determine with consideration of processes of cracking stress-strain state and bearing capacity of statically indeterminate reinforced concrete frame structures are developed; implemented - in design of constructions of reinforced concrete framework of high-rise apartment complex, in the educational process.