OcrV1, Main, Exploration, bibRecord, 000544

SHEAR STRENGTH PROPERTIES OF A RESIDUAL SOIL IN SINGAPORE

Identifieur interne : 000544 ( Main/Exploration ); précédent : 000543; suivant : 000545

SHEAR STRENGTH PROPERTIES OF A RESIDUAL SOIL IN SINGAPORE

Auteurs : G.-H. Meng [Singapour] ; J. Chu [Singapour]

Source :

Soils and foundations [ 0038-0806 ] ; 2011.

RBID : Pascal:12-0219965

Descripteurs français

Pascal (Inist)
- Mécanique sol, Essai sol, Propriété matériau, Résistance cisaillement, Sol résiduel, Singapour, Déformation plane, Essai triaxial, Frottement, Sol consolidé, Comportement, Relation contrainte déformation.
Wicri :
- geographic : Singapour.

English descriptors

KwdEn :
- Behavior, Consolidated soil, Friction, Plane strain, Properties of materials, Residual soil, Shear strength, Singapore, Soil mechanics, Soil test, Stress strain relation, Triaxial test.

Abstract

The shear strength and stress-strain behaviour of residual soil are known to be affected significantly not only by the initial porosity and stress history, but also by the bonds between particles. Although residual soil is commonly encountered during constructions in the tropical region, studies on its engineering properties are far from adequate. There is a lack of in-depth study to characterize the strength and deformation behaviour of intact residual soils in Singapore, especially under more representative testing conditions such as plane-strain conditions. In relation to a tunnelling construction project in Singapore, the engineering properties of an intact residual soil were characterised using laboratory tests. Large block undisturbed soil samples taken from a construction site were used. K₀ consolidated undrained triaxial compression (CK₀UC), extension (CK₀UE), direct simple shear (CK₀UDSS), and K₀consolidated undrained plane-strain (CK₀UPS) tests were conducted. The undrained shear strength ratio c_u/σ?₀ and overconsolidation ratio (OCR) relationships were established. The test results indicate that the undrained shear strength (c_u) of the intact residual soil is highly anisotropic in term of c_u/σ?₀ ratio. It is also noted from the experimental results that the secant friction angles were highly dependent on consolidation stresses, as well as the testing methods. These anisotropic properties will affect considerably the design methods and the selection of parameters for analyses.

Affiliations:

Singapour

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000092
to stream PascalFrancis, to step Curation: 000680
to stream PascalFrancis, to step Checkpoint: 000098
to stream Main, to step Merge: 000550
to stream Main, to step Curation: 000544

Le document en format XML

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<s2>Singapore</s2>
<s3>SGP</s3>
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<country>Singapour</country>
<wicri:noRegion>Singapore</wicri:noRegion>
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<term>Residual soil</term>
<term>Shear strength</term>
<term>Singapore</term>
<term>Soil mechanics</term>
<term>Soil test</term>
<term>Stress strain relation</term>
<term>Triaxial test</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Mécanique sol</term>
<term>Essai sol</term>
<term>Propriété matériau</term>
<term>Résistance cisaillement</term>
<term>Sol résiduel</term>
<term>Singapour</term>
<term>Déformation plane</term>
<term>Essai triaxial</term>
<term>Frottement</term>
<term>Sol consolidé</term>
<term>Comportement</term>
<term>Relation contrainte déformation</term>
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<front><div type="abstract" xml:lang="en">The shear strength and stress-strain behaviour of residual soil are known to be affected significantly not only by the initial porosity and stress history, but also by the bonds between particles. Although residual soil is commonly encountered during constructions in the tropical region, studies on its engineering properties are far from adequate. There is a lack of in-depth study to characterize the strength and deformation behaviour of intact residual soils in Singapore, especially under more representative testing conditions such as plane-strain conditions. In relation to a tunnelling construction project in Singapore, the engineering properties of an intact residual soil were characterised using laboratory tests. Large block undisturbed soil samples taken from a construction site were used. K<sub>0</sub>
 consolidated undrained triaxial compression (CK<sub>0</sub>
UC), extension (CK<sub>0</sub>
UE), direct simple shear (CK<sub>0</sub>
UDSS), and K<sub>0 </sub>
consolidated undrained plane-strain (CK<sub>0</sub>
UPS) tests were conducted. The undrained shear strength ratio c<sub>u</sub>
/σ?<sub>0</sub>
 and overconsolidation ratio (OCR) relationships were established. The test results indicate that the undrained shear strength (c<sub>u</sub>
) of the intact residual soil is highly anisotropic in term of c<sub>u</sub>
/σ?<sub>0</sub>
 ratio. It is also noted from the experimental results that the secant friction angles were highly dependent on consolidation stresses, as well as the testing methods. These anisotropic properties will affect considerably the design methods and the selection of parameters for analyses.</div>
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<name sortKey="Chu, J" sort="Chu, J" uniqKey="Chu J" first="J." last="Chu">J. Chu</name>
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SHEAR STRENGTH PROPERTIES OF A RESIDUAL SOIL IN SINGAPORE

SHEAR STRENGTH PROPERTIES OF A RESIDUAL SOIL IN SINGAPORE

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri