Numerical Simulation of Vertical Fire Spreading on the Exterior Wall of High-Rise Buildings with Corridors of Different Structural Factors
To study the variation law of flame propagation in the event of fire in high-rise buildings with corridors,and to provide reference for the fire protection design of such buildings.A 33-storey building model with corridor was established by using the fire numerical simulation software FDS,and the structural factors and the number of windows were changed to simulate the two factors,and the temperature distribution isotherm and temperature curve of the model under different conditions were analyzed.When the structural factors were 0.4,0.8 and 1.2,and the number of windows was two,three and four,the dangerous temperature of 540℃was reached,and the flame fusion height increased with the increase of the structural factors and the number of windows.With the increase of structural factors,the flame fusion height increased by 0.25～12.5 m;With the increase of the number of windows,the flame fusion height increased by 0.9～6.37 m;The flame propagation height of the exterior wall of high-rise buildings with corridors is affected by structural factors and the number of windows.As the number of windows increases,the greater the influence of structural factors on the flame fusion height,the larger the structural factor,the higher the flame fusion height.It is recommended that the structural factor of the corridor part of the high-rise building with corridor is less than 0.8,and the flame fusion height when the structural factor is 0.8 is selected as the height of the external spread fire barrier.
high-rise buildings with corridorsstructure factorsflame fusionnumerical simulation
NETL
NSTL
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