STUDY OF THE EFFICIENCY OF THE HIERARCHICAL APPROACH TO CALCULATED ASSESSMENT OF THE FIRE RESISTANCE OF REINFORCED CONCRETE BEAMS ACCORDING TO EUROCODE 2

  • Serhii Pozdieiev Cherkasy Institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine
  • Andriy Berezovskyi Cherkasy Institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine
  • Iryna Rudeshko Cherkasy Institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine
  • Тетяна Костенко Cherkasy Institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine
  • Stanislav Sidnei Cherkasy Institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine
Keywords: reinforced concrete floor beam, calculation methods of fire resistance assessment, finite element model, standard fire temperature regime

Abstract

The paper presents the main calculation methods for assessing the fire resistance according to tabular, zone and refined methods of reinforced concrete beams with a rectangular cross-section, with single double-row reinforcement, which is recommended in Eurocode 2. Based on the results of the computational experiments, a comparative analysis of the fire resistance indicators of these structures was carried out. The level of load on the reinforced concrete beam was taken to be 50% of the bearing capacity.

The finite element method was used for the refined calculation of the fire resistance assessment. According to the results of the refined method, the limit of fire resistance of the studied structure was 139.15 minutes.

Published
2023-08-01
Issue
Vol. 7 No. 1 (2023): Collection of Scientific Papers of Cherkasy Institute of Fire Safety named after Chornobyl Heroes of National University of Civil Protection of Ukraine «Emergency Situations: Prevention and Liquidation»
Section
Статті