快速拼装式防爆墙消波性能试验研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (15) : 239-244.

论文

快速拼装式防爆墙消波性能试验研究

葛涛1,2,张致远1,张志刚1

作者信息 +

Wave suppression performance tests of rapidly assembled anti-blast walls

GE Tao1,2, ZHANG Zhiyuan1, ZHANG Zhigang1

Author information +

文章历史 +

摘要

通过炮弹静爆试验，对快速拼装式防爆墙的消波性能进行了研究。对比了不同比例爆距下防爆墙前后的冲击波超压峰值，提出了反映防爆墙消波能力的超压消波效应系数，并结合试验数据分析了比例爆距、比例墙高和墙后比例距离对消波性能的影响。结果表明：作用于防爆墙迎爆面的反射超压一般比墙后的最大绕射超压大一个数量级，比例爆距和墙后测点距离对绕射超压影响较大；有防爆墙时墙后冲击波超压明显低于无墙时自由场超压，防爆墙的消波效应可达50%以上；比例爆距和比例墙高共同影响防爆墙的消波性能，随着墙后比例距离的增大，消波效应系数逐渐减小。

Abstract

In order to study rapidly assembled anti-blast walls’ ability to weaken shock wave，shell static explosion tests were conducted to compare shock wave overpressure peaks before and after anti-blast wall under different proportions of blast distance.The overpressure wave suppression effect coefficient reflecting wave suppression performance of an anti-blast wall was proposed, Effects of proportional blast distance, proportional wall height and proportional distance behind wall on wave suppression performance were analyzed with test data.The results showed that reflected pressure acting on blast face of anti-blast wall is about 10 times of the maximum diffraction overpressure behind wall; proportional blast distance and proportional distance behind wall have larger effects on diffraction overpressure; shock wave overpressure behind anti-blast wall is significantly lower than free field overpressure without anti-blast wall, anti-blast wall’s wave suppression effect can be up to 50% or more; proportional blast distance and proportional wall height together affect wave suppression performance of anti-blast wall; with increase in proportional distance behind wall, the overpressure wave suppression effect coefficient gradually decreases.

导出引用

葛涛1,2,张致远1,张志刚1. 快速拼装式防爆墙消波性能试验研究[J]. 振动与冲击, 2019, 38(15): 239-244

GE Tao1,2, ZHANG Zhiyuan1, ZHANG Zhigang1. Wave suppression performance tests of rapidly assembled anti-blast walls[J]. Journal of Vibration and Shock, 2019, 38(15): 239-244

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