解析建筑门窗耐火性能试验中的新变化

Analysis of New Changes in Fire Resistance Test of Building Doors and Windows

国家标准GB/T 38252-2019《建筑门窗耐火完整性试验方法》已于2019年12月10日发布并于2020年11月1日实施。该标准规定了建筑外窗的耐火性能试验方法并定义了标准的试验升温曲线以及试验结果和判定依据。相比GB 16809-2008《防火窗》,该标准适用于具有一定耐火性能的建筑门窗(以下简称“耐火窗”),并不适用于防火门窗。文中通过对试验条件及判定原则的研究,分析该标准对建筑外窗的耐火完整性的要求。

The National standard GB/T 38252-2019 Test Method for Fire Integrity of Building Doors and Windows has been issued on December 10,2019 and implemented on November 1,2020.In the new national standard,the fire-resistance test method of building Windows is stipulated,and the standard test temperature rise curve,test result and judgment basis are defined.Compared with GB 16809-2008"fire resistant window",this standard applies to the building doors and windows that has certain fireproof performance(hereinafter referred to as"fire resistant windows"),but not to fire doors and windows.Based on the study of test conditions and judgment principles,this paper analyzes the fire-resistant integrity requirements of building exterior Windows in the new standard.