Buratinskiy A. Calculation of reinforced concrete bar systems based on deformed scheme and creep under static and vibration loading

Object of the study - the stress-strain state of the flat bar reinforced concrete system. The aim of the work: the development of a calculation's method of the bar reinforced concrete systems with regard to the scheme of the deformed and creep under static and vibration loading. Research methods: used analytical methods of structural mechanics, which is based on the solution of differential equations, finite element method in the form of deflection method, and experimental methods to study the creep and vibrocreep. Theoretical and practical results: method of initial parameters vibrocreep and calculation method of the deformation of flat reinforced concrete bar systems with vibrocreep based on the finite element method was developed and method can be used in the practice of design of reinforced concrete bar systems in industrial and civil construction. The scientific novelty: the method of initial parameters vibrocreep was built; an experimental study of eccentrically compressed reinforced concrete pillars on the long-term strength and high frequency (vibration) loading, further calculation method of the deformation of flat reinforced concrete bar systems together with vibrocreep based on the method of finite elements and a method of initial parameters vibrocreep was further developed; improved recurrence formulas that simplify and automate such calculations taking into account long-term processes. Implementation extent: method and algorithm adopted for implementation in design practice in Dnipropetrovsk's philia Ukrainian State Institute design of road facilities(DP SE "Ukrgiprodor" - "Dneprogiprodor"). The results of the thesis are also introduced in the educational process at the department "Reinforced Concrete and Masonry Structures" and "Structural Mechanics and Strength of materials" State Higher Educational Establishment "Prydniprovska State Academy of Civil Engineering and Architecture". Obtained a copyright certificate for recurrence formulas. Range of application: design of reinforced concrete bar systems in industrial and civil construction.