张志刚,张致远,李明钊,葛涛,钱涛

• 1:空军工程大学机场建筑工程系
• 2:爆炸冲击防灾减灾国家重点实验室
• 3:中国航空港建设第三工程总队

摘要(Abstract)：

为研究快速拼装式防爆墙墙后超压分布规律及影响因素,基于2D映射3D网格建模技术,采用AUTODYN有限元软件分别对TNT当量为6.82 kg,爆高1 m、爆距3 m、墙厚0.5 m,墙体高度为1.5 m、2 m、2.5 m的计算模型和比例爆距分别1.58 m/kg~(1/3)、1.28 m/kg~(1/3)、1.05 m/kg~(1/3)的计算模型以及比例爆距为1.05 m/kg~(1/3),爆高1 m、墙高2 m、墙厚0.5 m,爆距为2 m、3 m、4 m的计算模型进行了模拟,分析了墙体高度、比例爆距和炸药位置对墙后超压分布的影响。结果表明:墙体高度增加将显著增强防爆墙消波性能,墙体高度在1.5~2.5 m范围内变化时,墙后消波系数变化较大;随着比例爆距的减小,墙后较远处消波系数有所增大;随着测点高度和爆高增大,测点处受到的防爆墙保护效应将减小。综合考虑以上因素对墙后测点超压的影响,拟合出了计算墙后超压大小的公式,计算结果与数值模拟结果能较好的吻合。

关键词(KeyWords)： 爆炸力学;防爆墙;消波性能;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学青年基金项目(51508568);; 爆炸冲击防灾减灾国家重点实验室开放课题(DPMEIKF201409)

作者(Author): 张志刚,张致远,李明钊,葛涛,钱涛

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