Application of a coupled hydro-mechanical interface model in simulating uplifting problems

Peng, M; Tian, Y; Gaudin, C; Zhang, L; Sheng, D

Application of a coupled hydro-mechanical interface model in simulating uplifting problems

Peng, M Tian, Y Gaudin, C Zhang, L Sheng, D

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Publisher:: Wiley
Publication Type:: Journal Article
Citation:: International Journal for Numerical and Analytical Methods in Geomechanics, 2022, 46, (17), pp. 3256-3280
Issue Date:: 2022-12-10

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Field	Value	Language
dc.contributor.author	Peng, M
dc.contributor.author	Tian, Y
dc.contributor.author	Gaudin, C
dc.contributor.author	Zhang, L
dc.contributor.author	Sheng, D https://orcid.org/0000-0002-1665-6931
dc.date.accessioned	2023-03-20T02:42:15Z
dc.date.available	2023-03-20T02:42:15Z
dc.date.issued	2022-12-10
dc.identifier.citation	International Journal for Numerical and Analytical Methods in Geomechanics, 2022, 46, (17), pp. 3256-3280
dc.identifier.issn	0363-9061
dc.identifier.issn	1096-9853
dc.identifier.uri	http://hdl.handle.net/10453/167714
dc.description.abstract	This paper presents the detailed formulation of a coupled hydro-mechanical structure-soil interface and demonstrates its application in simulating uplifting problems. This interface features real-time prediction of the pore pressure generation and structure-soil separation, and thus rate dependency and ‘breakaway’ can be modeled without user intervention. Constitutive relations of this interface were derived by considering the coupling between soil skeleton and fluid along the interface. A complete finite element formulation and numerical implementation of the interface is provided based on an eight-node element. The performance of this interface is demonstrated by simulating lifting a surface footing at varying rates (spanning across undrained, partially drained and drained conditions), compared with existing theoretical solutions, numerical results and experimental data. The good agreement achieved indicates that this interface is capable of modelling uplift at varying rates, which is an extremely challenging topic in offshore engineering. Sensitivity studies were conducted to investigate the parameters affecting uplifting behaviour. A unified backbone curve was established correspondingly, which is shown to be different from existing studies in compression, due to the difference in the mechanism between the two cases.
dc.language	en
dc.publisher	Wiley
dc.relation.ispartof	International Journal for Numerical and Analytical Methods in Geomechanics
dc.relation.isbasedon	10.1002/nag.3450
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	Application of a coupled hydro-mechanical interface model in simulating uplifting problems
dc.type	Journal Article
utslib.citation.volume	46
utslib.for	0905 Civil 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
utslib.copyright.status	open_access	*
dc.date.updated	2023-03-20T02:42:13Z
pubs.issue	17
pubs.publication-status	Published
pubs.volume	46
utslib.citation.issue	17

Abstract:

This paper presents the detailed formulation of a coupled hydro-mechanical structure-soil interface and demonstrates its application in simulating uplifting problems. This interface features real-time prediction of the pore pressure generation and structure-soil separation, and thus rate dependency and ‘breakaway’ can be modeled without user intervention. Constitutive relations of this interface were derived by considering the coupling between soil skeleton and fluid along the interface. A complete finite element formulation and numerical implementation of the interface is provided based on an eight-node element. The performance of this interface is demonstrated by simulating lifting a surface footing at varying rates (spanning across undrained, partially drained and drained conditions), compared with existing theoretical solutions, numerical results and experimental data. The good agreement achieved indicates that this interface is capable of modelling uplift at varying rates, which is an extremely challenging topic in offshore engineering. Sensitivity studies were conducted to investigate the parameters affecting uplifting behaviour. A unified backbone curve was established correspondingly, which is shown to be different from existing studies in compression, due to the difference in the mechanism between the two cases.

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http://hdl.handle.net/10453/167714