ABSTRACT The high-speed flying debris from architectural glass in a gas explosion poses a great security threat to personnel and building safety. In this paper, the damage characteristics of float glass under gas explosion venting loads and the distribution of glass fragments are studied through field tests. The results show that the rupture and dispersion of float glass are affected by the glass thickness and type and the methane concentration. Float glass exhibits spider-web cracking, and the fragments are sharp. The main shape of the debris dispersion front is either rectangular or “drum” shaped. The initial ejection speed of the shards is affected mainly by the glass thickness. The flying debris undergoes different acceleration and deceleration processes, and two acceleration peaks occur for a methane concentration of 9.5%. The glass shards are concentrated in two main areas of the collection site, and a theoretical model of glass scattering is established based on the test results. It can provide basic experimental data for research into gas explosions and act as a reference for the anti-explosion design of building structures.

中文翻译：

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甲烷-空气混合物泄放爆炸载荷作用下浮法玻璃破裂和弥散特性的实验研究

摘要 瓦斯爆炸中建筑玻璃产生的高速飞散碎片对人员和建筑安全构成了极大的安全威胁。本文通过现场试验研究了浮法玻璃在气体爆炸泄放载荷下的损伤特性和玻璃碎片的分布情况。结果表明，浮法玻璃的破裂和分散受玻璃厚度和类型以及甲烷浓度的影响。浮法玻璃呈现蜘蛛网状裂纹，碎片很锋利。碎屑扩散前沿的主要形状为矩形或“鼓”形。碎片的初始喷射速度主要受玻璃厚度的影响。飞散的碎片经历不同的加速和减速过程，甲烷浓度为9.5%时出现两个加速峰值。玻璃碎片集中在采集点的两个主要区域，并根据测试结果建立了玻璃散射的理论模型。可为瓦斯爆炸研究提供基础实验数据，为建筑结构的防爆设计提供参考。