Journal Published Online: 21 March 2024
Volume 47, Issue 4

Development of Tools for the Direct Measurement of Shear Stress and Shear Strain within a Soil Mass

CODEN: GTJODJ

Abstract

This article describes the development of sensing tools designed and applied to the direct measurement of shear stresses and shear strain within a soil mass. The importance in the development of these tools is in their ability to measure shear stresses and shear distortions within soil without any a priori information of the stress and strains applied at the boundaries of the system. These tools may be applied to element testing, testing of physical models, and field applications. The sensors were used in the testing of a sand in a large simple shear apparatus, under both constant height and constant vertical pressure conditions. Testing demonstrated that shear stresses smaller than 0.1 kPa are easily resolved. Shear strains smaller than 10−5 (abs) were reliably measured. Measurement of shear stress and shear distortion within the soil mass allows for direct determination of the shear stiffness of the soil. Shear stiffness measured in this fashion is significantly greater than that determined from the globally measured shear stress and shear strain. The stiffness degradation curve illustrates a constant shear stiffness over the range of 10−5 through 5·10−4.

Author Information

Talesnick, M.
Department of Civil and Environmental Engineering, Technion – Israel Institute of Technology, Haifa, Israel
Omer, I.
Department of Civil and Environmental Engineering, Technion – Israel Institute of Technology, Haifa, Israel
Ringel, M.
Department of Civil and Environmental Engineering, Technion – Israel Institute of Technology, Haifa, Israel
Ghafghazi, M.
Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario, Canada
Pages: 17
Price: $25.00
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Details
Stock #: GTJ20230363
ISSN: 0149-6115
DOI: 10.1520/GTJ20230363