Numerical Simulation Study On Fire Risk Of Underground Supermarket In A Shopping Center In Tangshan

With the development of modern cities,large commercial complex,large supermarkets located in underground commercial complex,often due to the core business circle,is located in the city traffic is very dense,so the importance of the construction of underground supermarket on fire control safety of self-evident,otherwise once the fire will cause would be catastrophic casualties.At present,the building fire risk analysis is a trend in the field of fire safety in buildings,using numerical simulation software to make a prediction and simulation when the fire broke out during a fire evacuation of personnel,both compared each other under different fire scene personnel safety evacuation time,and for the building fire control facilities and fire evacuation in effect at the time of the reasonable suggestions are put forward.The shopping underground supermarket in Tangshan is a typical modern commercial building project,which had fireproof facilities such as smoke exhaust fan and water spray.Follow the principle of "trusted the most adverse",as well as quantitative BSDD240 fire growth as the instruction,the design of the underground supermarket the normal work and smoke exhaust smoke spray spray part failure,smoke all spray fire scenario,and three scenarios for the simulation of fire smoke,focus on the research of smoke flow when the fire broke out,visibility,and the change of temperature,carbon monoxide in the different time distribution of each layer is obtained when the fire broke out the danger of time.In addition,the personnel evacuation model of the underground supermarket was constructed,and the ratio of effective evacuation time and required evacuation time of three fire scenes was obtained,so as to determine the risk of fire occurrence,provides reference for fire prevention and evacuation in other shopping centers.Figure25;Table9;Reference51...