Vibration monitoring and analysis of the 40 kg TNT equivalent blast containment chamber

HU Bayi; XIAO Zhiqiang; GU Yan; LIU Yu; FENG Dongsheng; LIU Jun

doi:10.11883/bzycj-2016-0260

Volume 38 Issue 4

May 2018

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2018 > 38(4): 918-924

HU Bayi, XIAO Zhiqiang, GU Yan, LIU Yu, FENG Dongsheng, LIU Jun. Vibration monitoring and analysis of the 40 kg TNT equivalent blast containment chamber[J]. Explosion And Shock Waves, 2018, 38(4): 918-924. doi: 10.11883/bzycj-2016-0260

Citation:

HU Bayi, XIAO Zhiqiang, GU Yan, LIU Yu, FENG Dongsheng, LIU Jun. Vibration monitoring and analysis of the 40 kg TNT equivalent blast containment chamber[J]. Explosion And Shock Waves, 2018, 38(4): 918-924. doi: 10.11883/bzycj-2016-0260

Citation:

PDF( 1902 KB)

Vibration monitoring and analysis of the 40 kg TNT equivalent blast containment chamber

doi: 10.11883/bzycj-2016-0260

Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Received Date: 2016-08-22
Rev Recd Date: 2017-10-09
Publish Date: 2018-07-25

Abstract

Abstract

In the present work, the vibration velocities of the ground, roof and top of the 40 kg TNT equivalent blast containment chamber resulting respectively from 15, 20, 25 and 40 kg TNT explosion were monitored using velocity sensors and geophones. The measured results showed that all of the ground velocity peaks were less than 5 cm/s, the vibration frequency was almost higher than 10 Hz and the vibration duration reached 5 to 10 s, and the vertical vibration peak of the roof was obviously enlarged by 6 to 7 times that of the horizontal ones. The wavelet packet analysis of the velocities' signal showed that the vertical vibration energy of the ground was 2.5 to 4.0 times that of the horizontal vibration energy, more than 95% of the vibration energy mostly concentrated in the range of 0-160 Hz, while more than 90% of the vertical vibration energy was limited in the range of 10-40 Hz. The results reveal that the attenuation effect of the vibration-isolating trench at a depth of 6 m on the blast seismic waves is imperfect, the independent base and seismic isolation bearing should be adopted if we hope to obtain an ideal attenuation effect especially when the explosive weight exceeds 5 kg TNT equivalent.
- blast containment chamber,
- vibration velocity,
- wavelet packet analysis,
- energy distribution

FullText(HTML)

References(18)

References

[1]	MORSE J L, WEINGART R C. High-explosives applications facility (HEAF): UCID-21864[R]. Livermore: Lawrence Livermore National Laboratory, 1989.
[2]	SWISDAK M, PECKHAM P. Validation tests in building 327-50-pound bombproof: NSWC-TR-384[R]. White Oak: Naval Surface Weapons Center, 1985.
[3]	LYLE J W. Calculating contained firing facility (CFF) explosive firing zones: UCRL-ID-132204-REV-2[R]. Livermore: Lawrence Livermore National Laboratory, 2001.
[4]	PASTRNAK J W, BAKER C F, SIMMONS L F. Measurements of a 1/4-scale model of a 60 kg explosives firing chamber: UCRL-JC-117774[R]. Livermore: Lawrence Livermore National Laboratory, 1995.
[5]	胡八一, 陈石勇, 谷岩, 等.隔振沟对爆炸塔周边地表振动的影响[J].爆炸与冲击, 2012, 32(6):647-652. doi: 10.11883/1001-1455(2012)06-0647-06 HU Bayi, CHEN Shiyong, GU Yan, et al. Effects of vibration-isolating trench on ground vibration surrounding blast containment chamber[J]. Explosion and Shock Waves, 2012, 32(6):647-652. doi: 10.11883/1001-1455(2012)06-0647-06
[6]	CHARLES F. Site 300's new contained firing facility[J]. Science and Technology Review, 1997, 3:4-9. https://www.osti.gov/servlets/purl/797810/
[7]	娄建武, 龙源, 徐全军, 等.工程爆破中的建筑物振动监测[J].解放军理工大学(自然科学版), 2000, 1(5):58-62. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=jfjlgdxxb200005012 LOU Jianwu, LONG Yuan, XU Quanjun, et al. Measuring and analysis of structure's response vibration in engineering blasting[J]. Journal of PLA University of Science and Technology (Natural Science), 2000, 1(5):58-62. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=jfjlgdxxb200005012
[8]	陈士海, 魏海霞, 张子华, 等.钢筋混凝土结构爆破地震响应频谱及幅值变化规律分析[J].振动与冲击, 2011, 30(1):213-217. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zdycj201101047 CHEN Shihai, WEI Haixia, ZHANG Zihua, et al. Spectral analysis and amplitude varying for blasting vibration response of a reinforced concrete building[J]. Journal of Vibration and Shock, 2011, 30(1):213-217. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zdycj201101047
[9]	ZHONG G S, AO L, ZHAO K. Influence of explosion parameters on wavelet packet frequency band energy distribution of blast vibration[J]. Journal of Central South University, 2012, 19(9):2674-2680. doi: 10.1007/s11771-012-1326-5
[10]	宁瑞峰, 张世平.小波包分析在爆破震动信号能量衰减规律中的应用[J].爆破, 2014, 31(1):1-4. https://www.wenkuxiazai.com/doc/780e15eb011ca300a6c390ba.html NING Ruifeng, ZHANG Shiping. Application of wavelet packet analysis in blasting vibration signal energy attenuation law[J]. Blasting, 2014, 31(1):1-4. https://www.wenkuxiazai.com/doc/780e15eb011ca300a6c390ba.html
[11]	费鸿禄, 曾翔宇, 杨智广.隧道掘进爆破振动对地表影响的小波包分析[J].爆炸与冲击, 2017, 37(1):77-83. doi: 10.11883/1001-1455(2017)01-0077-07 FEI Honglu, ZENG Xiangyu, YANG Zhiguang. Influence of tunnel excavation blasting vibration on earth's surface based on wavelet packet analysis[J]. Explosion and Shock Waves, 2017, 37(1):77-83. doi: 10.11883/1001-1455(2017)01-0077-07
[12]	朱振海, 杨永琦.沟槽对建筑物减震作用的动光弹研究[J].爆炸与冲击, 1989, 9(1):55-59. http://www.bzycj.cn/CN/abstract/abstract10872.shtml ZHU Zhenhai, YANG Yongqi. Dynamic photoelastic studies of the vibration damping by a slot near a structure[J]. Explosion and Shock Waves, 1989, 9(1):55-59. http://www.bzycj.cn/CN/abstract/abstract10872.shtml
[13]	JACOBSEN L S, AGBABIAN M S, KARAGOZIAN J. Study of shock isolation for hardened structures: AD639303[R]. Department of the Army, Office of the Chief of Engineers, 1996.
[14]	严东晋, 钱七虎, 唐德高.爆炸冲击震动下隔震系统设计的可靠性[J].土木工程学报, 2001, 34(3):23-28. http://www.cqvip.com/QK/90342X/2001003/5330166.html YAN Dongjin, QIAN Qihu, TANG Degao. Reliability of isolation system under blast shock and vibration[J]. China Civil Engineering Journal, 2001, 34(3):23-28. http://www.cqvip.com/QK/90342X/2001003/5330166.html
[15]	日本免震构造协会. 图解隔震结构入门[M]. 叶烈平, 译. 北京: 科学出版社, 1998.
[16]	胡八一, 刘宇, 燕乐伟, 等.10 kg TNT当量爆炸容器的冲击振动监测[J].振动与冲击, 2001, 20(4):65-67. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zdycj200104020 HU Bayi, LIU Yu, YAN Lewei, et al. Shock induced vibration monitoring of the 10 kg TNT equivalent explosion vessel[J]. Journal of Vibration and Shock, 2001, 20(4):65-67. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zdycj200104020
[17]	胡八一, 刘仓理, 陈石勇, 等.25 kg TNT当量爆炸容器的冲击隔震研究[J].振动与冲击, 2006, 25(6):43-45. http://www.cnki.com.cn/Article/CJFDTotal-BOPO201404009.htm HU Bayi, LIU Cangli, CHEN Shiyong, et al. Study on isolation of shock induced vibration of a 25 kg TNT equivalent explosion vessel[J]. Journal of Vibration and Shock, 2006, 25(6):43-45. http://www.cnki.com.cn/Article/CJFDTotal-BOPO201404009.htm
[18]	邓烜, 叶烈伟, 郁银泉, 等.大底盘多塔隔震结构设计[J].建筑结构, 2015, 45(8):13-24. http://www.cnki.com.cn/Article/CJFDTotal-JCJG201508004.htm DENG Xuan, YE Liewei, YU Yinquan, et al. Seismic isolation design of multi-tower structure with enlarged base[J]. Building Structure, 2015, 45(8):13-24. http://www.cnki.com.cn/Article/CJFDTotal-JCJG201508004.htm