Численное моделирование работы сталебетонных балок при трехстороннем нагреве

Abstract

UA: У статті наведено результати чисельного моделювання балок із зовнішнім листовим армуванням, що працюють в умовах трьохстороннього нагріву. Запропоновано тримірні моделі для оцінки вогнестійкості конструкцій, що досліджуються.

EN: The authors presented the numerical simulation results of beams with external steel sheet reinforcement working in conditions of three-sided heating. The three-dimensional models for fire resistance definition of examined beams were proposed using ANSYS software package. It’s assumed standard temperature range of fire. The authors have examined beams with and without flame-retardant coats. The Conlit SL150 Rockwool mineral wool coat, SP-A2 Piro-Safe FlamoPlast intumescent coating and Natresk coating are assumed as fire protection. All investigations were done in order to provide the demanded range of fire resistance rating. Cause and fire scenario are not considered. Verification of proposed finite element models and calculation was performed in comparison of obtained results with experimental data of steel-concrete beams destruction under the mechanical load.