Shear strength and stiffness anisotropy of geologically aged stiff clays

被引：6

作者：

Jardine, Richard ^{[1
]}

Brosse, Amandine ^{[1
,2
]}

Coop, Matthew ^{[3
]}

Kamal, Ramtin Hosseini

机构：

[1] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

[2] Geotech Consulting Grp, London, England

[3] City Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China

来源：

DEFORMATION CHARACTERISTICS OF GEOMATERIALS | 2015年 / 6卷

关键词：

Clays; anisotropy; stress path tests; shear strength; stiffness;

D O I：

10.3233/978-1-61499-601-9-156

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

This paper considers the deformation behaviour of four geologically aged, medium-plasticity, heavily overconsolidated stiff clays that affect a broad swathe of infrastructure projects in the SE of the United Kingdom. Static triaxial and hollow cylinder stress path experiments on high quality samples are examined along with dynamic multi-axial bender element and resonant-column measurements. Patterns of undrained shear strength anisotropy are revealed that are governed by the clays' meso and micro-structures. The clays are brittle in shear and their stiffness characteristics are shown to be markedly anisotropic, highly non-linear and pressure dependent. The results obtained have many implications for practical geotechnical engineering.

引用

页码：156 / 191

页数：36

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