Kushnir A. The stress-strain state of the reinforced concrete spatial frame structures

The object of research - spatial concrete frame structures that are widely used in the construction of buildings and constructions of various purpose; goal - creation and implementation of numerical and analytical calculation model the stress-strain state of reinforced concrete space frame structures term exposure to stress, taking into account nonlinear materials and processes of fracture, based on the numerical-analytic boundary element method; methods - analysis of the literature, theoretical and numerical analysis for the study of spatial frame structures, convergence analysis of the data with the experimental; results - built design relations numerical - analytical boundary element method in the calculation of spatial frame structures , developed a method of determining the center of the torsion of rectangular cross-sections of reinforced concrete elements in the elastic stage of the work , the algorithm charting " torque - twist angle " for rectangular concrete elements with a crack , the technique determining the stress - strain state of reinforced concrete space frame structures , taking into account nonlinear materials and processes of cracking; introduced - the design of reinforced concrete frame construction of apartment complex in the learning process.