基于FDS和经验公式法的综合性钢结构建筑防火研究

Study on Fire Protection of Steel Structure Building Based on FDS and Empirical Formula Method

以某综合性钢结构建筑为例,运用FDS软件仿真模拟和经验公式计算方法,分别确定不同场景火灾时的钢结构附近特定标高部位的温度;利用标准方法判定此温度条件下的钢结构屈服强度,分析其与钢结构最大应力之间的关系.研究表明:在发生设定火灾场景的火灾事故时该建筑特定标高部位最高温度均未超过200℃;且不会导致构建形变;可根据建筑物特有特点,采取不同的防火措施,以保证建筑安全性.

Taking the omnibus steel structure building as an example and using FDS and empirical formula method to confirm temperature of the specific height in the various fire scene. Using standard method to decide yield strength of steel structure in the temperature and analyzing relationship between the yield strength and maximum stress. The results show that the highest temperature of the specific height doesn＇t exceed 200 ℃ in the fire scene of the building and doesn＇t lead to deformation. Diverse fire prevention measures could be adopted according to the characteristics of the building.