Stability Analysis of Unsaturated Soil Pit Under Vehicle Load

Rao, P; Meng, J; Cui, J; Feng, W; Nimbalkar, S; Liu, Z

Stability Analysis of Unsaturated Soil Pit Under Vehicle Load

Rao, P Meng, J Cui, J Feng, W Nimbalkar, S

Liu, Z

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Publisher:: SPRINGER
Publication Type:: Journal Article
Citation:: Geotechnical and Geological Engineering, 2024, 42, (6), pp. 4987-5001
Issue Date:: 2024-08-01

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Field	Value	Language
dc.contributor.author	Rao, P
dc.contributor.author	Meng, J
dc.contributor.author	Cui, J
dc.contributor.author	Feng, W
dc.contributor.author	Nimbalkar, S https://orcid.org/0000-0002-1538-3396
dc.contributor.author	Liu, Z
dc.date.accessioned	2025-01-07T23:14:27Z
dc.date.available	2025-01-07T23:14:27Z
dc.date.issued	2024-08-01
dc.identifier.citation	Geotechnical and Geological Engineering, 2024, 42, (6), pp. 4987-5001
dc.identifier.issn	0960-3182
dc.identifier.issn	1573-1529
dc.identifier.uri	http://hdl.handle.net/10453/183097
dc.description.abstract	To investigate the effect of in-pit vehicle load on the stability of the pit against overturning, a long tunnel foundation pit project in Suzhou is used as a case. In-pit vehicle load effects are modelled using the improved equivalent soil thickness method. Through the utilization of the upper limit theory of limit analysis of finite soils and considering the spatial distribution of suction force in the matrix of unsaturated soils, a deduced method for calculating the stability coefficient of the unsaturated finite soil pit against overturning under vehicle load is established. The results indicate that in-pit vehicle load favours pit stability against overturning relative to conventional outside-pit vehicle load. The change in pit stability is more significant when the soil rupture angle is corrected by using the improved equivalent soil thickness method. The increased suction in the unsaturated soil matrix contributes to the pit’s stability against overturning. When calculating the stability coefficient against overturning, the finite earth pressure theory proves to be more realistic than the classical earth pressure theory. The results of this study can provide a valuable reference for similar types of pits to prevent overturning.
dc.language	English
dc.publisher	SPRINGER
dc.relation.ispartof	Geotechnical and Geological Engineering
dc.relation.isbasedon	10.1007/s10706-024-02825-1
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4019 Resources engineering and extractive metallurgy
dc.title	Stability Analysis of Unsaturated Soil Pit Under Vehicle Load
dc.type	Journal Article
utslib.citation.volume	42
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
pubs.organisational-group	University of Technology Sydney/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Transport Research Centre (TRC)
pubs.organisational-group	University of Technology Sydney/UTS Groups/Centre for Built Infrastructure Resilience (CBIR)
utslib.copyright.status	closed_access	*
dc.date.updated	2025-01-07T23:14:26Z
pubs.issue	6
pubs.publication-status	Published
pubs.volume	42
utslib.citation.issue	6

Abstract:

To investigate the effect of in-pit vehicle load on the stability of the pit against overturning, a long tunnel foundation pit project in Suzhou is used as a case. In-pit vehicle load effects are modelled using the improved equivalent soil thickness method. Through the utilization of the upper limit theory of limit analysis of finite soils and considering the spatial distribution of suction force in the matrix of unsaturated soils, a deduced method for calculating the stability coefficient of the unsaturated finite soil pit against overturning under vehicle load is established. The results indicate that in-pit vehicle load favours pit stability against overturning relative to conventional outside-pit vehicle load. The change in pit stability is more significant when the soil rupture angle is corrected by using the improved equivalent soil thickness method. The increased suction in the unsaturated soil matrix contributes to the pit’s stability against overturning. When calculating the stability coefficient against overturning, the finite earth pressure theory proves to be more realistic than the classical earth pressure theory. The results of this study can provide a valuable reference for similar types of pits to prevent overturning.

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http://hdl.handle.net/10453/183097