Abstract
The issue related to the conditions for creating the required temperature regime of fire when testing structures for fire resistance has not been studied in detail up to now. That necessitated determining the technical conditions under which it is possible to comply with the standard temperature regime of fire in the fire chamber of the furnace. The influence of the design parameters of the fire furnace chamber on the condition of compliance with the standard fire temperature regime when tested for fire resistance has been established. One of the most effective methods for examining such an impact is computer simulation. A computer model of the fire furnace was built on the basis of a comprehensive analysis and earlier work on the study of such furnaces, taking into consideration technical characteristics, in particular, geometrical parameters, fuel and air supply systems. The obtained research results are a prerequisite for scientific substantiation of the design parameters of fire furnaces and their engineering systems, which is necessary to comply with the standard temperature regime of fire in the furnace fire chamber. This makes it possible to provide the necessary conditions for testing building structures for fire resistance in compliance with the requirements of the relevant standards. The computer model constructed makes it possible to create the necessary temperature regime in the fire chamber of the furnace (in this study, the standard temperature of fire). As a result of the study, the technical parameters of the fuel supply and ventilation system were determined, which ensure compliance with the standard temperature regime in the fire chamber of the furnace. That makes it possible to build an automated complex of the testing process for fire resistance of building structures. In addition, the data obtained can be the basis for the design of such fire furnaces with the ability to comply with different fire temperature regimes without the intervention of the operator.
Highlights
Fire resistance estimation can be carried out by calculation and experimental methods [1, 2].To determine the limits of fire resistance, the most common is the method of testing in special fire test furnaces
It is necessary to solve the following task: based on the construction of a computer model, to determine the technical conditions under which it is possible to comply with the standard temperature regime of fire in the fire chamber of the furnace
Based on the construction of a computer model, technical conditions are determined under which it is possible to comply with the standard temperature regime of fire in the fire chamber of the furnace
Summary
Fire resistance estimation can be carried out by calculation and experimental methods [1, 2]. To determine the limits of fire resistance, the most common is the method of testing in special fire test furnaces. To ensure the repeatability and reproducibility of the results of the values of the boundary of fire resistance of structures, the test conditions must be regulated. To this end, the range of permissible values for temperature deviations must be set for the values of the temperature curve of the standard fire mode and the necessary technical parameters of the process of fuel supply and the discharge of smoke gases from the fire chamber. That determines maintaining the required temperature in the fire chamber of the furnace
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