Test technology for modeling underwater explosion in centrifuge

HU Jing; CHEN Zuyu; LEI Yumeng; WANG Yunchao; ZHANG Zitao; ZHANG Xuedong

doi:10.11779/CJGE2024S10037

Volume 46 Issue S1

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2024 > 46(S1): 32-36. > DOI: 10.11779/CJGE2024S10037

HU Jing, CHEN Zuyu, LEI Yumeng, WANG Yunchao, ZHANG Zitao, ZHANG Xuedong. Test technology for modeling underwater explosion in centrifuge[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S1): 32-36. DOI: 10.11779/CJGE2024S10037

Citation:

PDF (2939 KB)

Test technology for modeling underwater explosion in centrifuge

China Institute of Water Resources and Hydropower Research, Beijing 100048, China

More Information

Received Date: April 28, 2024

Graphical Abstract

Abstract

Abstract

With the increasing tension in the international arena, the anti-explosion safety of important infrastructures has attracted increasing attention. For the study on underwater explosion, the centrifugal model tests are an important method to study the damage effects by underwater explosion as the shock wave and bubble oscillation of the underwater explosion can satisfy similarity at the hyper gravity field. Based on the practical experience for the past ten years in centrifuge modeling of underwater explosion, the system composition of the related equipment is introduced. The technical indices of the equipment are presented. The vibrations of the centrifuge and container are monitored by two model tests. The results show that: (1) The impact response by explosion of the centrifuge spindle is small, which is basically the same as the vibration velocity under the normal operating conditions. The influences of explosion on the overall stability of the centrifuge can be ignored. (2) The impact acceleration and vibration velocity of the platform are large, and the impact response to the lifting lugs can be reduced by arranging high-elastic rubber at the bottom of the model. (3) The deformation of the container is basically in the elastic range, and the long side of the container should be supported in the span to reduce the deformation in the center. The bots should be used to increase the stability of the support of the side wall of the container.
- underwater explosion,
- centrifuge,
- hyper gravity,
- shock resistance,
- bubble oscillation

FullText(HTML)

References (10)

References

[1]	SNAY H G. The Scaling of Underwater Explosion Phenomena[R]. White Oak: Naval Ordnance Lab White Oak MD, 1961.
[2]	PRICE R S, ZUKE W G, INFOSINO C. A Study of Underwater Explosions in a High Gravity Tank[R]. White Oak: Naval Ordnance Lab White Oak MD, 1964.
[3]	SCHMIDT R M, VOSS M E, HOUSEN K R, et al. Subscale experiments to measure shock and bubble loading on responding structures[J]. Asme-Publications-Pvp, 1994, 272: 175.
[4]	VANADIT-ELLIS W, DAVIS L K. Physical modeling of concrete gravity dam vulnerability to explosions[C]//Waterside Security Conference (WSS), 2010 International. IEEE, 2010: 1-11.
[5]	DE A, NIEMIEC A, ZIMMIE T F. Physical and numerical modeling to study effects of an underwater explosion on a buried tunnel[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2017, 143(5): 04017002.
[6]	范一锴, 陈祖煜, 梁向前, 等. 砂中爆炸成坑的离心模型试验分析方法比较[J]. 岩石力学与工程学报, 2011, 30(增刊2): 4123-4128. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2011S2102.htm FAN Yikai, CHEN Zuyu, LIANG Xiangqian, et al. Comparison of three methods for geotechnical centrifuge model tests of explosion cratering in sand[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(S2): 4123-4128. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2011S2102.htm
[7]	马立秋, 张建民. 黏性土爆炸成坑和地冲击传播的离心模型试验研究[J]. 岩石力学与工程学报, 2011, 30(增刊1): 3172-3178. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2011S1076.htm MA Liqiu, ZHANG Jianmin. Centrifugal model testing study of explosion-induced craters and propagation of ground shock in clay[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(S1): 3172-3178. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2011S1076.htm
[8]	徐学勇, 胡波, 李波, 等. 爆破挤淤堤坝工后沉降特性离心模拟试验研究[J]. 岩土工程学报, 2015, 37(5): 958-964. doi: 10.11779/CJGE201505024 XU Xueyong, HU Bo, LI Bo, et al. Centrifugal model tests on settlement characteristics of embankment using blasting compaction technology[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(5): 958-964. (in Chinese) doi: 10.11779/CJGE201505024
[9]	管龙华, 卢强, 赵凤奎, 等. 砂土爆炸成坑离心模型试验相似律研究[J]. 岩土工程学报, 2024, 46(7): 1462-1470. doi: 10.11779/CJGE20230751 GUAN Longhua, LU Qiang, ZHAO Fengkui, et al. Scaling laws for centrifuge modelling of explosion-induced cratering in sand[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(7): 1462-1470. (in Chinese) doi: 10.11779/CJGE20230751
[10]	HU J, CHEN Z Y, ZHANG X D, et al. Underwater explosion in centrifuge part Ⅰ: Validation and calibration of scaling laws[J]. Science China Technological Sciences, 2017, 60(11): 1638-1657.