Stability analysis of unsaturated deposits: Effect of soil properties and hydro-mechanical coupling

G. Buscarnera; C. Di Prisco

Stability analysis of unsaturated deposits: Effect of soil properties and hydro-mechanical coupling

Civil and Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper investigates the mechanical conditions governing the activation of shallow landslides in unsaturated deposits. Particular attention is given to the effect of saturation processes applied under a constant total state of stress. For the sake of generality, multiple failure mechanisms are considered and are interpreted in the light of a unified theoretical framework. The analyses rely on the scheme of infinite slope and on the use of a coupled hydro-mechanical constitutive model. Simple shear test simulations are used to investigate the role of stress anisotropy, initial suction and soil properties. The simulations show that the predicted mechanism of activation depends on the material constants that reproduce the coupling between retention properties and stress-strain behavior. These constants affect the magnitude of the triggering perturbations and can play a relevant role in collapsible/liquefiable deposits. In particular, it is shown that the range of slope inclinations prone to originate a runaway instability can be a function of such hydro-mechanical coupling terms, thus depending on material constants that are not directly associated with the shearing resistance.

Original language	English (US)
Title of host publication	Landslides and Engineered Slopes
Subtitle of host publication	Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012
Editors	Erik Eberhardt, Corey Froese, A. Keith Turner, Serge Leroueil
Publisher	CRC Press/Balkema
Pages	1745-1751
Number of pages	7
ISBN (Print)	9780415621236
State	Published - 2012
Event	11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012 - Banff, Canada Duration: Jun 2 2012 → Jun 8 2012

Publication series

Name	Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012
Volume	2

Conference

Conference	11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012
Country/Territory	Canada
City	Banff
Period	6/2/12 → 6/8/12

ASJC Scopus subject areas

Earth-Surface Processes
Geotechnical Engineering and Engineering Geology

Cite this

Buscarnera, G., & Di Prisco, C. (2012). Stability analysis of unsaturated deposits: Effect of soil properties and hydro-mechanical coupling. In E. Eberhardt, C. Froese, A. K. Turner, & S. Leroueil (Eds.), Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012 (pp. 1745-1751). (Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012; Vol. 2). CRC Press/Balkema.

Buscarnera, G. ; Di Prisco, C. / Stability analysis of unsaturated deposits : Effect of soil properties and hydro-mechanical coupling. Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012. editor / Erik Eberhardt ; Corey Froese ; A. Keith Turner ; Serge Leroueil. CRC Press/Balkema, 2012. pp. 1745-1751 (Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012).

@inproceedings{396c0211b5354b49a4f97c23449b543e,

title = "Stability analysis of unsaturated deposits: Effect of soil properties and hydro-mechanical coupling",

abstract = "This paper investigates the mechanical conditions governing the activation of shallow landslides in unsaturated deposits. Particular attention is given to the effect of saturation processes applied under a constant total state of stress. For the sake of generality, multiple failure mechanisms are considered and are interpreted in the light of a unified theoretical framework. The analyses rely on the scheme of infinite slope and on the use of a coupled hydro-mechanical constitutive model. Simple shear test simulations are used to investigate the role of stress anisotropy, initial suction and soil properties. The simulations show that the predicted mechanism of activation depends on the material constants that reproduce the coupling between retention properties and stress-strain behavior. These constants affect the magnitude of the triggering perturbations and can play a relevant role in collapsible/liquefiable deposits. In particular, it is shown that the range of slope inclinations prone to originate a runaway instability can be a function of such hydro-mechanical coupling terms, thus depending on material constants that are not directly associated with the shearing resistance.",

author = "G. Buscarnera and {Di Prisco}, C.",

note = "Funding Information: Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy{\textquoteright}s National Nuclear Security Administration under contract DE-AC04-94AL85000. Publisher Copyright: {\textcopyright} 2012 Taylor & Francis Group, London.; 11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012 ; Conference date: 02-06-2012 Through 08-06-2012",

year = "2012",

language = "English (US)",

isbn = "9780415621236",

series = "Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012",

publisher = "CRC Press/Balkema",

pages = "1745--1751",

editor = "Erik Eberhardt and Corey Froese and Turner, {A. Keith} and Serge Leroueil",

booktitle = "Landslides and Engineered Slopes",

}

Buscarnera, G & Di Prisco, C 2012, Stability analysis of unsaturated deposits: Effect of soil properties and hydro-mechanical coupling. in E Eberhardt, C Froese, AK Turner & S Leroueil (eds), Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012. Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012, vol. 2, CRC Press/Balkema, pp. 1745-1751, 11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012, Banff, Canada, 6/2/12.

Stability analysis of unsaturated deposits : Effect of soil properties and hydro-mechanical coupling. / Buscarnera, G.; Di Prisco, C.

Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012. ed. / Erik Eberhardt; Corey Froese; A. Keith Turner; Serge Leroueil. CRC Press/Balkema, 2012. p. 1745-1751 (Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Stability analysis of unsaturated deposits

T2 - 11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012

AU - Buscarnera, G.

AU - Di Prisco, C.

N1 - Funding Information: Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000. Publisher Copyright: © 2012 Taylor & Francis Group, London.

PY - 2012

Y1 - 2012

N2 - This paper investigates the mechanical conditions governing the activation of shallow landslides in unsaturated deposits. Particular attention is given to the effect of saturation processes applied under a constant total state of stress. For the sake of generality, multiple failure mechanisms are considered and are interpreted in the light of a unified theoretical framework. The analyses rely on the scheme of infinite slope and on the use of a coupled hydro-mechanical constitutive model. Simple shear test simulations are used to investigate the role of stress anisotropy, initial suction and soil properties. The simulations show that the predicted mechanism of activation depends on the material constants that reproduce the coupling between retention properties and stress-strain behavior. These constants affect the magnitude of the triggering perturbations and can play a relevant role in collapsible/liquefiable deposits. In particular, it is shown that the range of slope inclinations prone to originate a runaway instability can be a function of such hydro-mechanical coupling terms, thus depending on material constants that are not directly associated with the shearing resistance.

AB - This paper investigates the mechanical conditions governing the activation of shallow landslides in unsaturated deposits. Particular attention is given to the effect of saturation processes applied under a constant total state of stress. For the sake of generality, multiple failure mechanisms are considered and are interpreted in the light of a unified theoretical framework. The analyses rely on the scheme of infinite slope and on the use of a coupled hydro-mechanical constitutive model. Simple shear test simulations are used to investigate the role of stress anisotropy, initial suction and soil properties. The simulations show that the predicted mechanism of activation depends on the material constants that reproduce the coupling between retention properties and stress-strain behavior. These constants affect the magnitude of the triggering perturbations and can play a relevant role in collapsible/liquefiable deposits. In particular, it is shown that the range of slope inclinations prone to originate a runaway instability can be a function of such hydro-mechanical coupling terms, thus depending on material constants that are not directly associated with the shearing resistance.

UR - http://www.scopus.com/inward/record.url?scp=85090076139&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85090076139&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85090076139

SN - 9780415621236

T3 - Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012

SP - 1745

EP - 1751

BT - Landslides and Engineered Slopes

A2 - Eberhardt, Erik

A2 - Froese, Corey

A2 - Turner, A. Keith

A2 - Leroueil, Serge

PB - CRC Press/Balkema

Y2 - 2 June 2012 through 8 June 2012

ER -

Buscarnera G, Di Prisco C. Stability analysis of unsaturated deposits: Effect of soil properties and hydro-mechanical coupling. In Eberhardt E, Froese C, Turner AK, Leroueil S, editors, Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012. CRC Press/Balkema. 2012. p. 1745-1751. (Landslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012).

Stability analysis of unsaturated deposits: Effect of soil properties and hydro-mechanical coupling

Abstract

Publication series

Conference

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this