INVESTIGATION OF DESIGN PARAMETERS FACADE FIRE-FIGHTING EAVES FOR PREVENT THE SPREAD OF FIRES ON FACADE STRUCTURES OF HIGH-RISE BUILDINGS

Abstract

Purpose. The research based on FDS modeling aims to identify design parameters influence of the façade firefighting eaves at fire compartment border on the prevention of fire spreading in high-rise buildings.
Methods. To calculate the temperature in high-rise building model Pyrosim computer system is used which serves as the user's shell application Fire Dynamics Simulator (FDS). This FDS system uses numerical algorithms to solve the complete Navier-Stokes differential equation system to determine the temperature and other hazardous factors during a fire.
Results. This article deals with the results of using the FDS modeling to substantiate fire-fighting eaves design parameters, which are extended beyond the facade and are located at fire compartment border along the perimeter of high-rise buildings with a conventional height of more than 73.5 m. A comparative analysis of eaves' design parameters and their effect on the temperature distribution along the building facade during a possible fire was conducted. Comparative dependences of tempera-ture distribution on building facades were constructed, as well as their heating areas were determined.
Scientific novelty. According to national and foreign regulations requirement analytical research and information sources on the of high-rise buildings design, fire safety requirements to the high-rise public buildings facades with a conventional height of more than 73.5 m were scientifically substantiated in terms of the requirements formation for limiting the fire spreading, smoke and building facades exterior constructions heating.
Practical value. Obtained data was analyzed as a result of FDS modeling under the same reference conditions to provide a conclusion on facade fire-fighting eaves design parameters effectiveness at fire compartment border and further improvement ways of their construction and fire spread prevention in high-rise buildings.