Research On Fire Spreading And Barrier Method For Exterior Wall Of High-Rise Building

The flame and smoke are the main factors that can seriously impact on the risk of casualties and property losses directly in High-rise building fire.Therefore,how to effectively control the spreading of flame and smoke is the key of fire protection.Based on the previous research results,this paper tries to use the architectural facade structure as the starting point,and uses the numerical simulation and the physical fire spread test as the support.The fire risk of the fire in different facade windows was analyzed and evaluated,and the spread of the facade fire was been controlled to provide relevant theoretical basis for building exterior fire protection design.The result that the convex "fireproof" structure had more influence on the facade of the building than the plane isolation zone was showed through the flame spread experiment.And the building convex balcony and bay window have obvious advantages over other design plans in practical applications.Besides,the impact of the difference of building structure on the building facade fire spread was stimulated by FDS,and whether it can prevent or slow the spread of fire outside the building was judged by comparing the temperature distribution of the external wall area: concave,flat and convex structure.The simulation results show that the three kinds of different building structures have the effect of fire spread control on the outer wall: convex>plane>concave,and the greater the degree of depression,the worse the flame control effect.