Experimental study on fire combustion of ETFE membrane side wall and ceiling
In recent years,membrane structures have been widely used in building structures,which have the advantages of low cost,short construction period and high environmental performance,but the use of B1 materials in building structures also has a certain fire risk.It is urgent to systematically study the fire performance of membrane structures.In this study,ethylene-tetra fluoro ethylene(ETFE)membrane is selected as the side wall and ceiling for research,the ETFE membrane cracking conditions are studied through full-scale solid combustion test,and the fire height is predicted by similarity theory analysis to analyze the bum-through law of the roof and side wall.The results show that the burn-through phenomenon of building structure under different fire source power is mainly correlated with the ignition height,and the flame height is about 9.10 m under the condition of 10.0 MW of ignition source.There are two conditions for ETFE membrane ceiling to be burned through,one is that it must be in direct contact with the flame,and the other is that the flame contact at about 200℃ is more than 2 minutes.When the ETFE membrane is used as the side,a flame with a fire source power of 2.0 MW is set,and the membrane will not be ignited when the horizontal distance between the flame and the membrane is 1 m.The study provides a theoretical basis and data support for the fire performance of B1 materials.
ETFE membraneceiling and side wallfire safetysolid burning fire
NETL
NSTL
万方数据
