Impacts of Pile Foundation Arrangement on Seismic Response of LNG Tanks Considering Soil-Foundation-Structure Interaction

Sharari, N; Fatahi, B; Hokmabadi, AS; Xu, R

Impacts of Pile Foundation Arrangement on Seismic Response of LNG Tanks Considering Soil-Foundation-Structure Interaction

Sharari, N Fatahi, B

Hokmabadi, AS Xu, R

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Publisher:: ASCE-AMER SOC CIVIL ENGINEERS
Publication Type:: Journal Article
Citation:: Journal of Performance of Constructed Facilities, 2022, 36, (1)
Issue Date:: 2022-02-01

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Field	Value	Language
dc.contributor.author	Sharari, N
dc.contributor.author	Fatahi, B https://orcid.org/0000-0002-7920-6946
dc.contributor.author	Hokmabadi, AS
dc.contributor.author	Xu, R
dc.date.accessioned	2023-04-06T00:31:39Z
dc.date.available	2023-04-06T00:31:39Z
dc.date.issued	2022-02-01
dc.identifier.citation	Journal of Performance of Constructed Facilities, 2022, 36, (1)
dc.identifier.issn	0887-3828
dc.identifier.issn	1943-5509
dc.identifier.uri	http://hdl.handle.net/10453/169229
dc.description.abstract	Liquefied natural gas (LNG) is cleaner and cheaper for power generation than traditional energy sources. Many tanks that store LNG are located in coastal areas with less favorable geotechnical conditions and often in seismically active regions. The seismic loads acting on LNG tanks are highly affected by the soil-foundation-structure interaction (SFSI) and evaluating this effect is quite challenging as a result of the nonlinear response of the structure and foundation interacting with the soil. This paper presents the application of a three-dimensional (3D) numerical simulation technique to study the impacts of foundation type on the seismic behavior of a large LNG tank considering the SFSI effects. Fully nonlinear dynamic analysis under the influence of the 1994 Northridge and 1995 Kobe earthquakes are performed using finite-element analysis software ABAQUS version 2018 to assess the LNG tank seismic response under different foundation types, namely, end-bearing pile foundation and pile-raft foundation with two different frictional pile lengths. The results show the importance of the SFSI effect in evaluation of the seismic response of LNG tanks built on pile foundations. Indeed, choice of the deep foundation system and composition of the foundation in terms of raft effects and pile length can significantly change the dynamic response of an LNG tank and thus seismic forces in the foundation and superstructure.
dc.language	English
dc.publisher	ASCE-AMER SOC CIVIL ENGINEERS
dc.relation.ispartof	Journal of Performance of Constructed Facilities
dc.relation.isbasedon	10.1061/(ASCE)CF.1943-5509.0001689
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0915 Interdisciplinary Engineering
dc.subject.classification	Civil Engineering
dc.title	Impacts of Pile Foundation Arrangement on Seismic Response of LNG Tanks Considering Soil-Foundation-Structure Interaction
dc.type	Journal Article
utslib.citation.volume	36
utslib.for	0905 Civil Engineering
utslib.for	0915 Interdisciplinary 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
pubs.organisational-group	/University of Technology Sydney/Strength - CAMGIS - Centre for Advanced Modelling and Geospatial lnformation Systems
utslib.copyright.status	closed_access	*
dc.date.updated	2023-04-06T00:31:38Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	36
utslib.citation.issue	1

Abstract:

Liquefied natural gas (LNG) is cleaner and cheaper for power generation than traditional energy sources. Many tanks that store LNG are located in coastal areas with less favorable geotechnical conditions and often in seismically active regions. The seismic loads acting on LNG tanks are highly affected by the soil-foundation-structure interaction (SFSI) and evaluating this effect is quite challenging as a result of the nonlinear response of the structure and foundation interacting with the soil. This paper presents the application of a three-dimensional (3D) numerical simulation technique to study the impacts of foundation type on the seismic behavior of a large LNG tank considering the SFSI effects. Fully nonlinear dynamic analysis under the influence of the 1994 Northridge and 1995 Kobe earthquakes are performed using finite-element analysis software ABAQUS version 2018 to assess the LNG tank seismic response under different foundation types, namely, end-bearing pile foundation and pile-raft foundation with two different frictional pile lengths. The results show the importance of the SFSI effect in evaluation of the seismic response of LNG tanks built on pile foundations. Indeed, choice of the deep foundation system and composition of the foundation in terms of raft effects and pile length can significantly change the dynamic response of an LNG tank and thus seismic forces in the foundation and superstructure.

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http://hdl.handle.net/10453/169229