Undrained shear strength of a residual soil measured by triaxial and direct simple shear tests

Authors

G H. Meng, University of WollongongFollow
J Chu, University of WollongongFollow
C Klotz, Department of Tunnel Design Germany

RIS ID

51450

Publication Details

Meng, G. H., Chu, J. & Klotz, C. (2007). Undrained shear strength of a residual soil measured by triaxial and direct simple shear tests. 16th South-East Asia Geotechnical Conference (pp. 375-380).

Abstract

The undrained shear strength of soil is one of the most important parameters required for geotechnical design. Depending on the design situations, the undrained shear strength of soil may have to be determined by different tests. In this paper, some testing data on the determination of the undrained shear strength of a residual soil in Singapore are presented. A series of tests including Ko consolidated undrained triaxial compression and extension tests, and Ko consolidated undrained direct simple shear tests have been conducted on large block undisturbed soil samples taken from the construction site ofT-06 (Queensway Tunnel) of the Deep Tunnel Sewerage System Project in Singapore. The anisotropic shear strength' behavior of the soil is discussed using the test data. The c_u/crvo' against OCR relationships between different tests are established for practical applications.