METHOD OF EXCEPTION OF POSSIBILITY OF COVERING STEELWORK COLLAPSE FROM FIRE

摘要

FIELD: construction.;SUBSTANCE: invention relates to construction, in particular to the method of exception of a possibility of collapse of a covering steelwork from oval concrete pipe elements from fire. The method consists in that in advance rods of a compressed top belt of the steelwork and rods of its mesh from oval pipes with the ratio of the larger to the smaller size equal to three are produced. Concrete is crimped outside from all sides with a holder. The oval compressed steelwork elements are transformed into the concrete pipe elements with the central longitudinal channel. The structure is fitted with temperature sensors and a system of pipes for water supply and its spraying inside the channels in the oval concrete pipe steelwork profiles. In case of fire by a signal from the sensors water supply and spraying in the channels is automatically actuated in the oval tubular profiles and draining under gravity downstream the channels of the tubular profiles. The metal tubular profiles of the steelwork are cooled from inside by evaporation of water and thus the steelwork metal temperature increase above 120…130°C is excluded.;EFFECT: increasing the steelwork of survivability.;6 dwg