Simulation study on fire spread of different exterior insulation facade structures in high rise buildings
In order to clarify the relationship between the exterior insulation facade structure and fire spread in high-rise buildings,Pyrosim fire simulation software was used to study the impact of different exterior insulation facade structures on fire spread in high-rise buildings.The results show that during the process of fire spread on the exterior facade of high-rise buildings,the insulation systems of different exterior facade structures reduce the air entrainment capacity and heat release rate as the degree of structural space limitation increases.However,their chimney effect is significantly enhanced,and the smoke flow rate is faster,leading to an accelerated vertical fire spread speed.As the thickness of the air layer increases,the temperature and smoke flow rate of the aluminum curtain wall structure insulation system first increase and then show significant fluctuations.The aging of the performance of the external wall insulation system will increase the risk of fire on the exterior facade of high-rise buildings.
high rise buildingsfacade structurefire spreadnumerical simulationexternal wall insulation
NETL
NSTL
万方数据
