摘要
玻璃构件广泛应用于大型商业综合体,作为防火分隔使用.火灾发生后,消防员灭火救援过程中水击行为可能造成玻璃构件的损坏,造成火灾的蔓延.为了评价水击对受火后的玻璃构件的破坏性,本文结合玻璃构件耐火性能测试,按照建筑构件的标准水击方法,开展 4次玻璃构件耐火测试后的水击测试.研究表明:4次水击试验,1次玻璃构件耐火性能合格,水击试验未破坏;1次玻璃构件耐火性能合格,水击导致玻璃破裂;2次玻璃构件失去隔热性,水击超温区域瞬间破裂.因此,玻璃构件耐火性能测试后,水击试验可能破坏玻璃构件的完整性,导致防火分隔功能的丧失,玻璃构件耐火试验后有必要进行水冲击测试.
Abstract
Glass components are widely used in large commercial complexes as fire partitions.After the fire broke out,the water strike behavior during the fire fighting and rescue may cause dam-age to the glass components,resulting in the spread of the fire.According to the standard hose stream method of building compo-nents,hose stream test after fire resistance test of glass compo-nents is carried out in this paper.The results show that when the glass insulation performance of the glass component is lost,the glass will open and collapse when the over temperature area touches the water,resulting in the loss of the fire separation func-tion.The fire resistance of the glass component does not reach the fire resistance limit,and the glass component may collapse.Wa-ter impact test is necessary after fire resistance test of glass com-ponents.
基金项目
应急管理部天津消防研究所基本科研业务费资助项目(2023SJ19)
NETL
NSTL
维普
万方数据