Rutkovs'ka I. Stress-deformed state of the built-up-monolithic prestressed caisson- shaped floor systems of non-rectangular form

The dissertation is devoted to the theoretical and experimental investigation of stress-deformed statе of the built-up-monolithic caisson-shaped floors of non-rectangular form in plane at various loading sheems. Algorithms and methodicsof BMCF calculating in inear and nonlinear stage of work with helpl of РС"Mirazh" and "Fenix-2" were elaborated. Numerical calculation of BMCF at the evenly distributed loading is fulfilled for two variants of leaning up: on columns; on columns and walls. For estimation of efforts redistribution in system was defined efforts correlation coefficient between the main and secondary beams. Engineer method of the floor calculating is proposed. Investigations of the nature construction measuring 19,8х17,42 m confirmed the physical and calculating models adequateness; the influence of concrete nonlinearity on the fforts redistribution wa s taken into account. Advantages of oposed BMCF at the main technical and economical indicesoposed BMCF at the main technical and economical indices built-up floors were shown.