Taking the wooden structure building of a Dong Nation?ality town as an example, the fire spreading of wooden structure building was studied by scaling experiment and FDS simulation. In scaling experiment, the fire source heat release rate was measured and calculated by weight loss method,and 6 groups of K type ther?mocouple were laid out to measure the temperature. The fire spreading with different row spacing was simulated by FDS. Re?sults showed that, wind velocity is one of the key factors affecting the wooden structure building fire spreading; with the increase of the building row spacing,the fire spreading slows down;it was de?cided that the fire safety distance in the area should be no less than 12 m.%以某侗族村镇木结构建筑为例,利用缩比例实验及FDS数值模拟的方法研究了木结构建筑火灾蔓延情况.在缩比例实验中,通过失重法测量并计算火源热释放速率,并布置6组K型热电偶测量火灾时的温度变化.通过FDS数值模拟不同行间距的情况下建筑火灾蔓延的情况.结果表明,在木结构火灾蔓延中,风速是影响火灾蔓延的重要因素之一;随着建筑行间距的增加,火灾蔓延得到了缓解,最终确定该地区木结构建筑的防火安全距离不应低于12 m.
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