Astakhov А. Increased fire bezbalkovyh floor slabs monolithic buildings bezryhelnymy frame

The method and conducted numerical simulations of temperature fields in the sections of concrete slabs, including pryopornyh zones concept EN harmonized with the European standards group ( Eurocode ). A calculated temperature curves for slabs and columns for all classes of standard fire resistance 30, 60, 90, 120, 180 and 240 min. Revealed new features of the stress-strain state of monolithic reinforced concrete frame buildings with bezryhelnoho which is a significant increase in lateral forces when exposed to fire risk of the limit state of shear in the slab at its bursting column. The method of experimental studies on concrete slabs bursting when heated. The new design prototypes. The simulation of the stress-strain state of concrete samples with various combinations of loads and impacts during the operation in order to study the processes of destruction. A significant new phenomenon of redistribution of stress state effects of temperature in the zone of intersection of columns and plates. A new method of detection of stress-strain state in reinforced concrete floor slabs monolithic buildings bezryhelnymy frame with joint loading and temperature effects using computer technology in the linear and non-linear productions. Numerical simulation of the stress -strain state in the fragment bezryhelnoho monolinoho reinforced concrete frame building with bezryhelnym frame in linear and nonlinear formulations to identify the effect of temperature on the characteristics of their marginal status. Experimental study of the characteristics of the junction fragment slabs of reinforced concrete column frame buildings when subjected to high temperatures, taking into account the spatial work. The results introduced in the design and construction of 19- storey residential building in Kharkiv and the draft EN -N B B.2.6 -XX : 200X . Design of concrete structures. Guideline. Fire .