Protective effect of unbonded prestressed ultra-high performance reinforced concrete slab against gas explosion in buried utility tunnel

Yang, Y; Wu, C; Liu, Z; Du, J; Zhang, H; Xu, S; Zhou, S

Protective effect of unbonded prestressed ultra-high performance reinforced concrete slab against gas explosion in buried utility tunnel

Yang, Y Wu, C

Liu, Z Du, J Zhang, H Xu, S Zhou, S

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Process Safety and Environmental Protection, 2021, 149, pp. 370-384
Issue Date:: 2021-05-01

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Field	Value	Language
dc.contributor.author	Yang, Y
dc.contributor.author	Wu, C https://orcid.org/0000-0001-6786-7934
dc.contributor.author	Liu, Z
dc.contributor.author	Du, J
dc.contributor.author	Zhang, H
dc.contributor.author	Xu, S
dc.contributor.author	Zhou, S
dc.date.accessioned	2022-03-08T01:15:58Z
dc.date.available	2022-03-08T01:15:58Z
dc.date.issued	2021-05-01
dc.identifier.citation	Process Safety and Environmental Protection, 2021, 149, pp. 370-384
dc.identifier.issn	0957-5820
dc.identifier.issn	1744-3598
dc.identifier.uri	http://hdl.handle.net/10453/155043
dc.description.abstract	With the wide application of natural gas, in order to increase the sustainability of buried utility tunnel and prevent the explosion of the gas pipeline cabin from threatening process safety, the performance of the partition wall (slab) of the cabin against gas explosion should be investigated. This paper presents the protective effect of unbonded prestressed ultra-high performance reinforced concrete slab (UPUHPRCS) against gas explosion in buried utility tunnel. There were four scenarios in the experiment, among which the variables were the length of tunnel (12,000 mm and 20,000 mm) and gas concentration (7.5 % and 9.5 %). The normal strength reinforced concrete slab (NSRCS) and ultra-high performance reinforced concrete slab (UHPRCS) were tested as reference specimens, and the simple supported steel slab fixed by stacking sandbags was compared with the concrete slab fully constrained on the tunnel. The overpressure curves caused by gas explosions in the tunnel, the damage of each concrete slab and the change of deflections were obtained through the tests. The results indicated that with the increase of the length of the buried utility tunnel, the power of gas explosion will further increase, and the UPUHPRCS, as the partition wall of the gas pipeline independent cabin in the buried utility tunnel, will play an excellent role in against gas explosion. Moreover, the gas explosion may have little effect on the circular section pipeline in the independent cabin.
dc.language	English
dc.publisher	Elsevier
dc.relation	National Natural Science Foundation of China51978186
dc.relation.ispartof	Process Safety and Environmental Protection
dc.relation.isbasedon	10.1016/j.psep.2020.11.002
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0102 Applied Mathematics, 0904 Chemical Engineering, 0911 Maritime Engineering, 0914 Resources Engineering and Extractive Metallurgy
dc.subject.classification	Chemical Engineering
dc.subject.classification	Strategic, Defence & Security Studies
dc.title	Protective effect of unbonded prestressed ultra-high performance reinforced concrete slab against gas explosion in buried utility tunnel
dc.type	Journal Article
utslib.citation.volume	149
utslib.for	0102 Applied Mathematics
utslib.for	0904 Chemical Engineering
utslib.for	0911 Maritime Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
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	*
pubs.consider-herdc	false
dc.date.updated	2022-03-08T01:15:55Z
pubs.publication-status	Published
pubs.volume	149

Abstract:

With the wide application of natural gas, in order to increase the sustainability of buried utility tunnel and prevent the explosion of the gas pipeline cabin from threatening process safety, the performance of the partition wall (slab) of the cabin against gas explosion should be investigated. This paper presents the protective effect of unbonded prestressed ultra-high performance reinforced concrete slab (UPUHPRCS) against gas explosion in buried utility tunnel. There were four scenarios in the experiment, among which the variables were the length of tunnel (12,000 mm and 20,000 mm) and gas concentration (7.5 % and 9.5 %). The normal strength reinforced concrete slab (NSRCS) and ultra-high performance reinforced concrete slab (UHPRCS) were tested as reference specimens, and the simple supported steel slab fixed by stacking sandbags was compared with the concrete slab fully constrained on the tunnel. The overpressure curves caused by gas explosions in the tunnel, the damage of each concrete slab and the change of deflections were obtained through the tests. The results indicated that with the increase of the length of the buried utility tunnel, the power of gas explosion will further increase, and the UPUHPRCS, as the partition wall of the gas pipeline independent cabin in the buried utility tunnel, will play an excellent role in against gas explosion. Moreover, the gas explosion may have little effect on the circular section pipeline in the independent cabin.

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http://hdl.handle.net/10453/155043