Dynamic responses of hollow steel pipes directly buried in high-saturated clay to blast waves

GONG Xiangchao; ZHONG Dongwang; SI Jianfeng; HE Li

doi:10.11883/bzycj-2018-0443

Volume 40 Issue 2

Jan. 2020

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GONG Xiangchao, ZHONG Dongwang, SI Jianfeng, HE Li. Dynamic responses of hollow steel pipes directly buried in high-saturated clay to blast waves[J]. Explosion And Shock Waves, 2020, 40(2): 022202. doi: 10.11883/bzycj-2018-0443

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GONG Xiangchao, ZHONG Dongwang, SI Jianfeng, HE Li. Dynamic responses of hollow steel pipes directly buried in high-saturated clay to blast waves[J]. Explosion And Shock Waves, 2020, 40(2): 022202. doi: 10.11883/bzycj-2018-0443

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Dynamic responses of hollow steel pipes directly buried in high-saturated clay to blast waves

doi: 10.11883/bzycj-2018-0443

1.
Department of Engineering Mechanics, College of Science, Wuhan University of Science and Technology, Wuhan 430065, Hubei, China
2.
MOE Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, China Three Gorges University, Yichang 443002, Hubei, China

Received Date: 2018-11-07
Rev Recd Date: 2019-04-02

Available Online: 2020-01-25

Publish Date: 2020-02-01

Abstract

Abstract

A series of experiments were designed and implemented to explore dynamic responses of steel pipes to blast waves The time histories of dynamic strains, vibration velocities and accelerations of the steel pipes were obtained, and the vibration velocity-time curves were gained. It is known by analyzing the experimental data that in the near and middle fields of the blast wave, the peak dynamic strains are negatively correlated with the relative stiffness coefficient of the pipe and the soil, and they follow the attenuation law of the power function with scaled distance; that the attenuation indexes are different for the blast wave propagating in the different sections of the field. The peak particle vibration velocities of the ground and the pipes have good linear correlations with the peak strains of the measuring points at the pipes. On the basis of the spectrum analysis by the fast Fourier transform on each test quantity, it is found that the spectrum energy of each test quantity is mainly concentrated in the low-frequency band, the centroid frequency is in 10−60 Hz, but there are obvious differences compared to the spectra of natural seismic waves. The centroid frequency of the dynamic strain spectrum is decayed in the exponent form of a power function with the increase of the explosive charge. By taking logarithm, there is a linear attenuation relationship between the scaled distance and the centroid frequencies of velocity spectra that the blasting cavity factor is considered. The test data can be directly applied to the seismic calculation under similar conditions, and some conclusions can be used as the theoretical basis for further study of the impact damage mechanism of buried pipelines.
- blast wave,
- spectrum analysis,
- buried pipe,
- dynamic strain,
- vibration velocity,
- vibration acceleration

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References

[1]	李强, 陈德利, 屈洋. 爆破对输气管道本体影响的监测 [J]. 油气储运, 2015, 34(2): 190–194. DOI: 10.6047/j.issn.1000-8241.2015.02.017. LI Q, CHEN D L, QU Y. Monitoring on effects of blasting on gas pipeline body distortion [J]. Oil & Gas Storage and Transportation, 2015, 34(2): 190–194. DOI: 10.6047/j.issn.1000-8241.2015.02.017.
[2]	程围峰, 梁旭, 王振宇. 隧道爆破施工对邻近输油管道的影响评价 [J]. 石油工程建设, 2011, 37(4): 44–46; 9. DOI: 10.3969/j.issn.1001-2206.2011.04.013. CHENG W F, LIANG X, WANG Z Y. Assessment of blasting impact in tunnel excavation on nearby oil pipeline [J]. Petroleum Engineering Construction, 2011, 37(4): 44–46; 9. DOI: 10.3969/j.issn.1001-2206.2011.04.013.
[3]	张紫剑, 赵昌龙, 张黎明, 等. 埋地管道爆破振动安全允许判据试验探究 [J]. 爆破, 2016, 33(2): 12–16. DOI: 10.3963/j.issn.1001-487X.2016.02.003. ZHANG Z J, ZHAO C L, ZHANG L M, et al. Experimental investigation of blasting vibration safety criterion on buried pipeline [J]. Blasting, 2016, 33(2): 12–16. DOI: 10.3963/j.issn.1001-487X.2016.02.003.
[4]	戴联双, 张海珊, 孟国忠, 等. 在役油气管道周边爆破作业风险分析 [J]. 油气储运, 2012, 31(11): 801–803; 887. DOI: 10.6047/j.issn.1000-8241.2012.11.001. DAI L S, ZHANG H S, MENG G Z, et al. Risk analysis of blasting operations around in-service oil and gas pipelines [J]. Oil & Gas Storage and Transportation, 2012, 31(11): 801–803; 887. DOI: 10.6047/j.issn.1000-8241.2012.11.001.
[5]	王振洪, 侯雄飞, 边明, 等. 爆破对天然气长输管道振动影响的安全判据 [J]. 油气储运, 2016, 35(8): 813–818. DOI: 10.60 47/j.issn.1000-8241.2016.08.003. WANG Z H, HOU X F, BIAN M, et al. Safety criterion for impacts of bursting on long-distance gas pipeline [J]. Oil & Gas Storage and Transportation, 2016, 35(8): 813–818. DOI: 10.60 47/j.issn.1000-8241.2016.08.003.
[6]	SISKIND D E, STAGG M S, WIEGAND J E, et al. Surface mine blasting near pressurized transmission pipelines [R]. Minneapolis, MN: US Department of the Interior Bureau of Mines, 1994: 2−3; 22−23.
[7]	DOWDING C H. Blast vibration monitoring and control [M]. New Jersey: Prentice-Hall, 1985: 167−171.
[8]	ESPARZA E D, WESTINE P S, WENZEL A B. Pipeline response to buried explosive detonations: Vol. 2 [R]. Arlington, USA: American Gas Association, 1981: 146−152.
[9]	KOURETZIS G P, BOUCKOVALAS G D, GANTES C J. Analytical calculation of blast-induced strains to buried pipelines [J]. International Journal of Impact Engineering, 2007, 34(10): 1683–1704. DOI: 10.1016/j.ijimpeng.2006.08.008.
[10]	ABEDI A S, HATAF N, GHAHRAMANI A. Analytical solution of the dynamic response of buried pipelines under blast wave [J]. International Journal of Rock Mechanics and Mining Sciences, 2016, 88: 301–306. DOI: 10.1016/j.ijrmms.2016.07.014.
[11]	钟冬望, 龚相超, 涂圣武, 等. 高饱和黏土中爆炸波作用下直埋聚乙烯管的动力响应 [J]. 爆炸与冲击, 2019, 39(3): 033102. DOI: 10.11883/bzycj-2017-0334. ZHONG D W, GONG X C, TU S W, et al. Dynamic responses of PE pipes directly buried in high saturated clay to blast wave [J]. Explosion and Shock Waves, 2019, 39(3): 033102. DOI: 10.11883/bzycj-2017-0334.
[12]	冯双, 马郧, 徐光黎. 武汉地区基坑一般黏性土的力学特性与其物理指标间的相关性研究 [J]. 安全与环境工程, 2016, 23(5): 149–154. DOI: 10.13578/j.cnki.issn.1671-1556.2016.05.025. FENG S, MA Y, XU G L. Correlation between mechanical properties and physical indicators of general cohesive soil in foundation pits in Wuhan area [J]. Safety and Environmental Engineering, 2016, 23(5): 149–154. DOI: 10.13578/j.cnki.issn.1671-1556.2016.05.025.
[13]	库特乌佐夫. 爆破工程师手册 [M]. 刘清泉, 译. 北京: 煤炭工业出版社, 1992: 137–138
[14]	卢文波, 张乐, 周俊汝, 等. 爆破振动频率衰减机制和衰减规律的理论分析 [J]. 爆破, 2013, 30(2): 1–6; 11. DOI: 10.3963/j.issn.1001-487X.2013.02.001. LU W B, ZHANG L, ZHOU J R, et al. Theoretical analysis on decay mechanism and law of blasting vibration frequency [J]. Blasting, 2013, 30(2): 1–6; 11. DOI: 10.3963/j.issn.1001-487X.2013.02.001.
[15]	陈勇, 杨庆华. 埋地管道在地震波作用下的变形分析 [J]. 世界地震工程, 2015, 31(4): 275–279. CHEN Y, YANG Q H. Deformation analysis of buried pipelines under seismic waves [J]. World Earthquake Engineering, 2015, 31(4): 275–279.