Experimental and numerical study on ground shock propagation in calcareous sand

Pan, Y; Li, J; Zong, Z; Wu, C; Qian, H

Experimental and numerical study on ground shock propagation in calcareous sand

Pan, Y Li, J

Zong, Z Wu, C

Qian, H

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: International Journal of Impact Engineering, 2023, 180
Issue Date:: 2023-10-01

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Field	Value	Language
dc.contributor.author	Pan, Y
dc.contributor.author	Li, J https://orcid.org/0000-0003-2457-1994
dc.contributor.author	Zong, Z
dc.contributor.author	Wu, C https://orcid.org/0000-0001-8907-8493
dc.contributor.author	Qian, H
dc.date.accessioned	2024-04-08T08:27:47Z
dc.date.available	2024-04-08T08:27:47Z
dc.date.issued	2023-10-01
dc.identifier.citation	International Journal of Impact Engineering, 2023, 180
dc.identifier.issn	0734-743X
dc.identifier.issn	1879-3509
dc.identifier.uri	http://hdl.handle.net/10453/177571
dc.description.abstract	Surface explosion tests were conducted on calcareous sands to study the ground shock propagation in this medium. In the tests, ground shock at scaled distances between 0.33 m/kg1/3 and 1.46 m/kg1/3 was measured. After each explosion, the surface craters were observed and measured. The propagation and attenuation law of the peak pressure was derived according to the experimental measurement. The shock wave velocity and rise time were derived based on the pressure time-history curves. The empirical formula for pressure time-history curve of direct ground shock in calcareous sand induced by surface explosion was derived, and the predicted impulses showed good agreement with the experimental impulses. The indirect ground shock induced by air shock compression effect on the soil was discussed. Based on the field blast test results, validated numerical models were established to investigate the propagation of direct and indirect ground shock in calcareous sand. The attenuation law of peak pressure of indirect ground shock was then derived according to the numerical simulation results. Besides the surface explosion scenario, the contained burst cases were also modelled. The critical scaled depth of burial was derived as 1.3 m/kg1/3 in calcareous sand based on the surface crater and shock impulse.
dc.language	English
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartof	International Journal of Impact Engineering
dc.relation.isbasedon	10.1016/j.ijimpeng.2023.104724
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0901 Aerospace Engineering, 0905 Civil Engineering, 0913 Mechanical Engineering
dc.subject.classification	Mechanical Engineering & Transports
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4016 Materials engineering
dc.subject.classification	4017 Mechanical engineering
dc.title	Experimental and numerical study on ground shock propagation in calcareous sand
dc.type	Journal Article
utslib.citation.volume	180
utslib.for	0901 Aerospace Engineering
utslib.for	0905 Civil Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access	*
dc.date.updated	2024-04-08T08:27:45Z
pubs.publication-status	Published
pubs.volume	180

Abstract:

Surface explosion tests were conducted on calcareous sands to study the ground shock propagation in this medium. In the tests, ground shock at scaled distances between 0.33 m/kg1/3 and 1.46 m/kg1/3 was measured. After each explosion, the surface craters were observed and measured. The propagation and attenuation law of the peak pressure was derived according to the experimental measurement. The shock wave velocity and rise time were derived based on the pressure time-history curves. The empirical formula for pressure time-history curve of direct ground shock in calcareous sand induced by surface explosion was derived, and the predicted impulses showed good agreement with the experimental impulses. The indirect ground shock induced by air shock compression effect on the soil was discussed. Based on the field blast test results, validated numerical models were established to investigate the propagation of direct and indirect ground shock in calcareous sand. The attenuation law of peak pressure of indirect ground shock was then derived according to the numerical simulation results. Besides the surface explosion scenario, the contained burst cases were also modelled. The critical scaled depth of burial was derived as 1.3 m/kg1/3 in calcareous sand based on the surface crater and shock impulse.

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http://hdl.handle.net/10453/177571