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爆炸荷载作用下几种框支玻璃抗爆实验的研究.pdf

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爆炸荷载作用下几种框支玻璃抗爆实验的研究.pdf

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文档介绍:西南科技大学硕士研究生学位论文第1页摘要随着恐怖主义在全世界的蔓延,一些标志性建筑成为袭击对象的爆炸事件逐步增多,而建筑玻璃又广泛的应用于外墙装饰,根据很多爆炸袭击案例,70%的人员伤亡是由于玻璃受到爆炸冲击作用而产生的高速飞溅碎片所造成。在爆炸冲击荷载作用下玻璃易破碎,因此提高建筑玻璃的抗爆性能可以有效减小爆炸袭击所造成的伤害。目前国内外对建筑玻璃的研究着重在玻璃的材料性能,抗震性能,施工设计等方面,对其抗爆性能的研究处于初步阶段,而且对建筑玻璃在爆炸冲击波作用下的动力性行为研究以数值模拟为主,缺乏用实验方法获得的测量结果,很难对理论研究和数值模拟的结果进行有效性定量评价。本文用静态爆轰实验的方法,系统的研究了爆炸冲击波对钢化夹胶玻璃、普通夹胶玻璃和浮法玻璃等三种常用建筑玻璃的作用。结合爆炸冲击波超压的计算方法和测量的实际冲击波超压值得到了所用炸药的冲击波超压一距离关系,得到了上述三种玻璃在破坏临界点的冲击波超压破坏阈值;并且借助高速分幅摄影技术,获得了爆炸冲击波作用时三种玻璃损伤破坏过程的清晰图像;最后提出根据冲击波相似定律,可以推算不同装药情况下建筑玻璃的防护距离。关键词:爆轰试验冲击波超压建筑玻璃冲击波超压破坏阈值西南科技大学硕士研究生学位论文第1I页 Ab st ract With the spread ofterrorism all over the world,many buildings e targets of attacks,especially some symbolic buildings,and glass has been widely used inbuilding exterior tomany cases ofbomb attack,70%of thecasualties were caused by the high-speed splash pieces ofglass,when there was aexplosion load act on will break easily under explosion load,therefore improve the anti—explosion performance of architectural glass can effectively reduce the damage caused by bomb domestic study mainly focus on material performance,seismic resistance,construction design of architectural glass,but the study of glass’S anti—explosion performance isstillinthe preliminary stage,and there isalso no corresponding anti—explosion design standard for architectural glass. The main research method iSnumerical simulation,lack of by the measurement result by iS difficult to evaluate the effectiveness of theoretical study and numerical simulation result. Inthis article static detonation test method was used to research the response about monly used architectural glass,include toughened laminated mon laminated glass and float glass, when under explosion shock wave,with the help ofHigh—speed pho tographic technology,the clear deformation—damage。process images of the three glass were obtained,while these glass were under explosion load,and according tothemeasured shock wave overpressure value,the shoc