In-structure shock of underground structures : a theoretical approach

When an underground structure is subjected to a subsurface explosion, an in-structure shock occurs. The in-structure shock can be a major cause of disruption and even damage to the instruments and equipment contained in the structure if the detonation is relatively distant. For this reason, an appro...

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Main Authors: Ma, Guowei, Zhou, Hongyuan, Lu, Yong, Chong, Karen
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2012
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Online Access:https://hdl.handle.net/10356/94968
http://hdl.handle.net/10220/8137
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-949682020-03-07T11:43:41Z In-structure shock of underground structures : a theoretical approach Ma, Guowei Zhou, Hongyuan Lu, Yong Chong, Karen School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering When an underground structure is subjected to a subsurface explosion, an in-structure shock occurs. The in-structure shock can be a major cause of disruption and even damage to the instruments and equipment contained in the structure if the detonation is relatively distant. For this reason, an appropriate analysis and prediction of explosion-induced in-structure shock is an important topic in the area of protective design of underground structures. In this paper, a detailed analysis is conducted on a representative buried structural element subjected to soil-transmitted blast. The soil–structure interaction is considered by introducing an interfacial damping between the structural element and the surrounding soil. Two phases of the structural response to the blast load, i.e., a blast loading phase and a free-vibration phase, are analyzed. Based on the analytically derived time histories of the structural response, which represent the in-structure shock, the response spectra concerning the equipment (sub-structures) attached to the main structure are constructed. Besides providing a theoretical approach for the evaluation of the in-structure shock and its subsequent effects, the present analysis is supplementary to the relevant provisions in TM5-855-1 and TM5-1300, in which only rough predictions of in-structure shock for buried structures are specified. 2012-05-23T04:01:08Z 2019-12-06T19:05:35Z 2012-05-23T04:01:08Z 2019-12-06T19:05:35Z 2010 2010 Journal Article Ma, G.W., Zhou, H.Y., Lu, Y. & Chong, K. (2010). In-structure shock of underground structures : a theoretical approach. Engineering Structures, 32(12), 3836–3844. https://hdl.handle.net/10356/94968 http://hdl.handle.net/10220/8137 10.1016/j.engstruct.2010.08.026 163211 en Engineering structures © 2010 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Engineering Structures, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/j.engstruct.2010.08.026 ] 38 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering
spellingShingle DRNTU::Engineering::Civil engineering
Ma, Guowei
Zhou, Hongyuan
Lu, Yong
Chong, Karen
In-structure shock of underground structures : a theoretical approach
description When an underground structure is subjected to a subsurface explosion, an in-structure shock occurs. The in-structure shock can be a major cause of disruption and even damage to the instruments and equipment contained in the structure if the detonation is relatively distant. For this reason, an appropriate analysis and prediction of explosion-induced in-structure shock is an important topic in the area of protective design of underground structures. In this paper, a detailed analysis is conducted on a representative buried structural element subjected to soil-transmitted blast. The soil–structure interaction is considered by introducing an interfacial damping between the structural element and the surrounding soil. Two phases of the structural response to the blast load, i.e., a blast loading phase and a free-vibration phase, are analyzed. Based on the analytically derived time histories of the structural response, which represent the in-structure shock, the response spectra concerning the equipment (sub-structures) attached to the main structure are constructed. Besides providing a theoretical approach for the evaluation of the in-structure shock and its subsequent effects, the present analysis is supplementary to the relevant provisions in TM5-855-1 and TM5-1300, in which only rough predictions of in-structure shock for buried structures are specified.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Ma, Guowei
Zhou, Hongyuan
Lu, Yong
Chong, Karen
format Article
author Ma, Guowei
Zhou, Hongyuan
Lu, Yong
Chong, Karen
author_sort Ma, Guowei
title In-structure shock of underground structures : a theoretical approach
title_short In-structure shock of underground structures : a theoretical approach
title_full In-structure shock of underground structures : a theoretical approach
title_fullStr In-structure shock of underground structures : a theoretical approach
title_full_unstemmed In-structure shock of underground structures : a theoretical approach
title_sort in-structure shock of underground structures : a theoretical approach
publishDate 2012
url https://hdl.handle.net/10356/94968
http://hdl.handle.net/10220/8137
_version_ 1681044497750818816