爆炸冲击隔震系统实验研究
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摘要
实验研究了由钢丝绳隔震器组成的爆炸冲击隔震系统在爆炸冲击下的响应及破坏机理,得到了爆炸冲击隔震系统的破坏模式;通过对比实验得到隔震系统效果的定量认识;最后用快速傅里叶变换对结果进行分析。结果表明:隔震系统能够比较显著地减弱低频振动的幅值,这对于结构减振有积极的意义,可以在爆炸塔等爆炸试验场所推广应用。
The response and failure mechanism of a PGG damping system was studied with tests.According to test results,the failure pattern of the system and the quantitative cognition for the shock absorption effect of the system were found.At last,the test results were analyzed in frequency domain with FFT.The results indicated that the damping system is very effective for shock absorption in structures under blast shock.
The response and failure mechanism of a PGG damping system was studied with tests.According to test results,the failure pattern of the system and the quantitative cognition for the shock absorption effect of the system were found.At last,the test results were analyzed in frequency domain with FFT.The results indicated that the damping system is very effective for shock absorption in structures under blast shock.
引文
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[3]卢红标,周早生,严东晋,等.爆炸冲击震动模拟平台的研制[J].爆炸与冲击,2005,25(3):276-280.LU Hong-biao,ZHOU Zao-sheng,YAN Dong-jin,et al.Development on shocking table for blast explosions[J].Explosion and Shock Waves.2005,25(3):276-280.
[4]李孝林,王少雄,高怀树.爆破振动频率影响因素分析[J].辽宁工程技术大学学报,2006,25(2):204-206.LI Xiao-lin,WANG Shao-xiong,GAO Huai-shu.Analysis offactors affecting blasting vibration frequency[J].Journal ofLiaoning Technical University,2006,25(2):204-206.
[5]GB6722-2003,爆破安全规程[S].
[6]毛志远,徐全军.考虑频率影响的爆破震动安全判据的工程实践[J].工程爆破,2001,7(3):19-14.MAO Zhi-yuan,XU Quan-jun.An engineering practice onsafety criterion of blasting vibration considering the effect offrequency[J].Engineering Blasting.2001,7(3):19-14.
[7]张学亮.爆破地震效应[M].北京:地震出版社,1982:72-138.
[8]郭学彬,肖正学,张继春.爆破振动频率特性的测试与研究[J].中国矿业,2004,13(9):68-71.GUO Xue-bin,XIAO Zheng-xue,ZHANG Ji-chun.Testingand study of frequency specific property of blasting vibration[J].China Mining Magazine,2004,13(9):68-71.
[9]唐飞勇,王意堂,梁开水.爆破振动信号的特征分析的应用探讨[J].爆破,2010,27(4):109-112.TANG Fei-yong,WANG Yi-tang,LIANG Kai-shui.Characteristics analysis of blasting vibration signals of open pit[J].Blasting,2010,27(4):109-112.
[10]李夕兵,凌同华.爆炸参量对爆破地震反应谱的影响[J].爆炸与冲击,2004,24(5):443-447.LI Xi-bing,LING Tong-hua.Influence of explosionparameters on response spectrum for blast ground vibration[J].Explosion and Shock Waves,2004,24(5):443-447.
[11]李孝林,穆太升,董鑫,等.频率在爆炸震害中的作用及其影响因素分析[J].工程爆破,2001,7(3):15-18.LI Xiao-lin,MU Tai-sheng,DONG xin,et al.Role offrequency in harm of blasting vibration and analysis on itsinfluence factors[J].Engineering Blasting,2001,7(3):15-18.
[12]毕卫国,石嵩.爆破地震波引起结构响应的频率因素分析[J].爆破,2004,21(3):87-89.BI Wei-guo,SHI Song.Analysis on frequency factor instructure response induce by blasting seismic wave[J].Blasting,2004,21(3):87-89.
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