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Information × Registration Number 0210U000186, 0107U000807 , R & D reports Title Methods of calculation of ferro-concrete structures of road bridges an the force and forced inrluences. popup.stage_title Head Jaremenko Alexsandr Fedorovich, Registration Date 27-01-2010 Organization The Odessa State Akademy of Building and Architecture popup.description2 The object of research is bearing rod constructions and elements of ferro-concrete span structures of transport constructions The purpose of work is development of theoretical positions and algorithm of deformative method of calculation of stressed ferro-concrete constructions and elements according to the first and second groups of limiting state. Physical relations in case of a difficult tension of rod preliminary intense ferro-concrete element and elements without preliminary pressure with rectangular and T-shaped sections are received. The offered approach considers step-type behaviour of placing of armature and nonlinearity of properties of concrete and armature. The technique of definition of the compelled stresses is developed at change of an ambient temperature and subsidence of support in ferro-concrete not cutting span structures and racks of road bridges. Cracks, creep of concrete, and participation of a span structure in teamwork with piles and a ground lead to considerable redistribution (reduction) of internal stresses. The torsion moments arising in systems of cross beams, reduce bending moments by 10-15 %. The engineering technique of definition torsion rigidity of beams with normal cracks allows to receive results (deflections) which answer experimental. Results RW can be used in designing of building and reconstruction of ferro-concrete designs of span structures. Product Description popup.authors Чучмай Олександр Миколайович Школа Юлія Олександрівна popup.nrat_date 2020-04-02 Close