ISSN: 1945-7545
CODEN: GTJODJ
Page Count: 10

A New Direct Simple Shear Device

Franke, E
Head of the soil mechanics division, head of the soil mechanics laboratory, and staff engineer, Bundesanstalt für Wasserbau, Aussenstelle Küste (Federal Institute for Waterways Engineering, Coastal Branch), Hamburg,

Kiekbusch, M
Head of the soil mechanics division, head of the soil mechanics laboratory, and staff engineer, Bundesanstalt für Wasserbau, Aussenstelle Küste (Federal Institute for Waterways Engineering, Coastal Branch), Hamburg,

Schuppener, B
Head of the soil mechanics division, head of the soil mechanics laboratory, and staff engineer, Bundesanstalt für Wasserbau, Aussenstelle Küste (Federal Institute for Waterways Engineering, Coastal Branch), Hamburg,

Abstract

Existing types of direct simple shear devices are discussed and a newly developed apparatus is presented. This apparatus uses a round specimen that is laterally covered by a rubber membrane and placed in a pressure cell in which vertical and horizontal normal stresses are applied as with triaxial test equipment. The shear stresses are transmitted to the specimen by a horizontally loaded top cap. Zero lateral strain during undrained shearing is achieved through an automatic measuring and regulating system. Procedures and results are described for an undrained cyclic simple shear test on sand and an undrained static strain-controlled test on an undisturbed normally consolidated clay.

Keywords:
soil tests, undrained shear tests, direct shear tests, pore water pressures

Paper ID: GTJ10457J
DOI: 10.1520/GTJ10457J
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