建筑玻璃的爆炸动力响应及防爆距离  

Dynamic response of architectural glass to explosion and safe extent research

作　　者：高轩能[1] 江媛[1] 王书鹏[1] 

机构地区：[1]华侨大学土木工程学院,泉州362021

出　　处：《计算力学学报》2011年第4期560-565,共6页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(51008133);福建省重点科技计划(2006H0030);厦门市科技计划(3502Z20073036)资助项目

摘　　要：玻璃作为一种透明或半透明材料,广泛应用于现代建筑工程中,但其在爆炸冲击荷载作用下易于破碎,产生飞片伤人。文章应用弹性薄板振动理论,研究框支承玻璃在爆炸冲击荷载下的动力响应,得到玻璃的最大挠度与最大应力计算公式。基于爆炸冲击波传播特性和玻璃强度理论,提出了建筑玻璃爆炸冲击破坏准则,对不同类型和厚度的框支承玻璃在爆炸冲击波作用下的安全距离进行了计算并与现有公式进行了比较分析。结果表明,对于普通玻璃,现有公式给出的安全距离显著偏小,不安全;而对于钢化玻璃、夹层玻璃和厚度大于15 mm的浮法玻璃,则计算结果过于保守。通过回归分析,给出了框支承玻璃防爆安全距离的实用计算公式,与现有公式形式一致,方便应用。As a kind of transparent or translucent material,architectural glass is widely used in the modern buildings,but it is easily broken under explosion loading,resulting in wounding fragments.Using the theory of vibration of elastic thin plate,the dynamic responses of frame-supported glass under blast loading were analyzed and the maximum deflection formula and the maximum stress formula of the glass panel were obtained in this paper.Based on the shock wave spread characteristics and the theory of the strength of glass,the damage criteria of architectural glazing subjected to explosion are presented.The safe extents of different types of frame-supported architectural glazing with different thickness under explosive shock wave were calculated and were comparatively analyzed with the results of the existing formulae.The results showed that the safe extents given by the existing formulae are too small to be unsafe for ordinary glass,yet too conservative for tempered glass,laminated glass and the float glass of thickness greater than 15mm.By regression analysis,the practical formulas for calculating safe extents of frame-supported glass under explosion are obtained,which are the same form with the existing formula and easy application.

关 键 词：建筑玻璃 冲击波 动力响应 安全距离 爆炸 

分 类 号：TU524[建筑科学—建筑技术科学] X932[环境科学与工程—安全科学]