高压物理学报2018，Vol.32Issue(2)：92-99,8.DOI:10.11858/gywlxb.20170611
有机玻璃-空气层结构对爆炸水池水下爆炸地基振动的影响
Influence of Plexiglass-Air Interlayer Structure on Foundation Vibration of Small Pool Underwater Explosion
摘要
Abstract
To study the influence of the plexiglass-air interlayer structure on underwater explosion vi-bration,the foundation vibration signals for this structure caused by underwater explosion in the small pool(5.5m in diameter and 3.62m in height),the influence of different air interlayer thicknesses on the maximum vibration velocity was studied,HHT(Hilbert-Huang Transform)was used to analyze the vibration test signals by writing relevant programs based on Matlab software,studying the influ-ence of different air interlayer thickness on the global frequency of vibration signals.Experimental results show that:under the condition of plexiglass-air interlayer structure,with the increase of air in-terlayer thickness,the maximum vibration velocity decreases first and then increases,and the vibration isolation effect is the best when the thickness is 120 mm.The amplitude corresponding to the global frequency can be obtained by means of HHT analysis,the amplitude attenuation of the 5-15 Hz low frequency section is obvious,the action time is shortened,which can effectively prevent the resonance phenomenon between the building and structure.The experimental results and analysis have certain theoretical reference value for underwater blasting engineering protection and structural design of lightning protection bunker for military ship.关键词
水下爆炸/有机玻璃-空气层结构/爆炸振动/Hilbert-Huang变换Key words
underwater explosion/plexiglass-air interlayer structure/explosion vibration/Hilbert-Huang transform分类
数理科学引用本文复制引用
汪泉,汤有富,李志敏,宫婕,程扬帆,刘上豪,李成孝..有机玻璃-空气层结构对爆炸水池水下爆炸地基振动的影响[J].高压物理学报,2018,32(2):92-99,8.基金项目
国家自然科学基金(11502001) （11502001）
中国博士后基金面上项目(2014M561808) （2014M561808）
安徽省博士后基金项目(2014B035) （2014B035）
