INVESTIGATION OF THE RELIABILITY OF THE RESULTS OF THERMAL CALCULATION OF STEEL BEAMS WITH FIREPROOF MINERAL WALL COATING IN CONDITIONS OF FIRE

Abstract

The reliability of fire-resistant coatings for steel structures is an important issue based on the study of fire resistance indicators established experimentally. However, conducting such research requires significant costs for the test facilities themselves, the production of samples for experiments, and the payment of qualified specialists. The modern capabilities of computer mathematical modeling of many processes have created opportunities based on the indicators of small experimental experiments to simulate the behavior processes of steel structures with fire-resistant mineral wool coating under the conditions of a standard fire temperature regime. However, in order to establish the reliability of the data obtained during experiments and the data obtained using mathematical modeling, it is necessary to check the reliability and acceptability of the obtained data and their adequacy to the processes characteristic of the actual behavior of such structures in fire conditions. In order to achieve the goal, one of the main parameters - the thermal conductivity coefficient - was determined, and the indicators of this parameter were checked based on the data of the experiment and mathematical modeling. The verification was carried out according to DSTU B.V.1.1.7 – 17:2007 and by establishing the statistical criteria of Student, Cochrane and Fisher.