Study on the Relevance of Lightweight Steel Structures and Thermal Hazard During Fires

[摘要] Lightweight Steel Structures with high application targets, rapid construction and low cost. However, the influence of heat radiation on the internal temperature is very large, and in order to reduce the heat conduction caused by the sun, the user often attaches a flammable heat insulating material inside. In this study, the fire simulation software FDS was used to simulate the lightweight steel structure building fire, and the research on the thermal buoyancy, heat conduction, smoke distribution and building structure collapse limit of this type of building form was calculated. The research found that the steel thermal fluctuation and the fire flashover temperature of 600°C were achieved after 520 seconds of fire. This study provides lightweight steel structure construction based on numerical calculation results. It is recommended to set the smoke exhaust window appropriately or use fireproof materials for interior decoration to reduce the heat accumulation inside the building to prolong the time of steel thermal fluctuation and make the lightweight steel structure It is not easy to flashover (backdraft) in the building, and the steel structure is not easy to collapse. It can improve the safety factor and make the life of fire rescue personnel more secure.

[发布机构] Da Yeh University, Department of Environmental Engineering, Da-Yeh University of Department of Fire and Safety, Taiwan; 515, China^1

[效力级别] 机械制造

[关键词] Building structure;Heat accumulation;Internal temperature;Light-weight steels;Numerical calculation;Rapid construction;Structure constructions;Thermal fluctuations