Fire Protection of Steel and Reinforced Concrete Structures of Industrial Buildings and Structures


Variants of progressive solutions for the use of efficient fire protection means for steel and reinforced concrete structures of the industrial buildings and structures are considered for the purpose of increasing the actual fire resistance and ensuring the requirements of fire safety norms. Distinctive features of the temperature regimes in the initial phase of a real fire from a standard fire were established when assessing the fire resistance of building structures. It is proposed to use such standardized temperature regimes of fire for assessing the fire resistance of building structures, as standard — in the industrial buildings; temperature regime of hydrocarbons combustion — for oil and gas, petrochemical enterprises, offshore stationary platforms; tunnel temperature regime — in the road and railway tunnels. Considering the operating conditions and performance of work on fire protection, the degree of aggressiveness of the environment, the structural and methodological scheme was developed for selecting passive fire protection for steel structures. Recommendations are given on limiting the use of intumescent paints for load-bearing steel structures involved in the overall stability of buildings, with the required fire resistance limit of no more than 30 minutes. To calculate the temperature over the section of the structure during its heating, the dependences of the change in the coefficients of thermal conductivity and heat capacity of fire-retardant linings under fire were obtained. Experimental studies were conducted related to the fire resistance of reinforced concrete floor slabs and slabs with an external reinforcement system based on the carbon composite material with various types of fire-retardant materials. The issue of protecting the lining blocks of road and railway tunnels from brittle (explosive) destruction of concrete in a fire is considered. It is experimentally confirmed that the addition of polypropylene fibers to the concrete mixture replaces the use of fire protection for the tunnels enclosing structures.

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DOI: 10.24000/0409-2961-2021-9-50-56
Year: 2021
Issue num: September
Keywords : fire resistance efficiency structures temperature conditions industrial buildings steel structures reinforced concrete structures passive fire protection thermal diffusivity thermal conductivity heat capacity
  • Golovanov V.I.
    Dr. Sci. (Eng.), Chief Research Associate, FGBU VNIIPO EMERCOM of Russia, Balashikha, Russia
  • Pekhotikov A.V.
    Cand. Sci. (Eng.), Head of the Department, FGBU VNIIPO EMERCOM of Russia, Balashikha, Russia
  • Pavlov V.V.
    Head of Sector FGBU VNIIPO EMERCOM of Russia, Balashikha, Russia