Yaremenko N. Deflected mode and bearing capacity of the reinforced concrete grider grillages

Object of researches: reinforced concretes flat ribbed, caissons and without beams ceilings, structures of flights of road-transport bridges; a purpose is development of new spatial models of the systems of the reinforced concretes of cross beams (grillages) for determination of their tensely-deformed state and bearing strength taking into account physically nonlinear work of material at the action of the static loading; methods – modification of method of moving is executed as it applies to the calculation of grillages of the reinforced concretes taking into account physically nonlinear deformation of their material, basic equalizations are certain and the algorithm of their decision is developed, on the basis of results of calculation an analysis is given tensely - the deformed state of the explored constructions; results - basic equalizations are developed and the algorithm of calculation of grillages is built on the base of method of moving, including determination of inflexibility of stability tocracks and durability of beams, diagrams a bending moment is curvature; a novelty is determining equalizations and algorithm of calculation of efforts, bendings and bearing strength of cross beams of the reinforced concretes with the use of spatial calculation chart and by the account of creation cracks, to physical non-linearity of deformation of materials; conformities to the law of deformation and redistribution of efforts of the different ceilings and tiled-ribbed structures of flights are exposed; results of analysis of the tensely-deformed state and bearing strength simple and caissons of uncuts and without beams ceilings, structures of flights of road-transport bridges, including increased; it is inculcated – at the reconstruction of bridge transition, at planning of moorage-trestle, in an educational process; a sphere of the use is planning of grillages of the reinforced concretes.