Simulation study on fire temperature and internal air pressure of air-supported membrane structure coal storage shed
In recent years,the country has continuously put forward new requirements for high-quality and green development.The novel air-supported membrane structure in building forms has been widely used in coal storage yards due to its unique advantages,but it corresponds to special fire safety issues.This article conducts nu-merical simulation research on the temperature distribution and pressure changes inside the membrane of air-supported membrane structure coal storage shed.The results show that the maximum temperature near the membrane surface depends on the distance be-tween the fire source and the membrane surface.When the fire source is too close to the membrane surface,the membrane mate-rial will be heated and perforated,with a maximum perforation area of 29.75 m2.Most of the hot smoke will be discharged with the per-foration,and the overall temperature inside the membrane will be greatly reduced.When the membrane material is not burned through,the trend of pressure changes inside the membrane at dif-ferent fire source positions is similar,and the maximum value of in-ternal pressure does not differ significantly.When the membrane material is burned through,the pressure inside the membrane rap-idly decreases,which will affect the stability of the membrane struc-ture and may lead to building collapse.
air-supported membrane structurecoal storage shedtemperature distribution of membrane materialinternal pressure