Influence of lateral stress on soil-structure interface tests in a hollow cylinder apparatus
Influence of lateral stress on soil-structure interface tests in a hollow cylinder apparatus
The contact shear behaviour between the soil and a structure has a significant impact on the load transfer of geotechnical structures. In the past, several different approaches to test and quantify this soil-structure interface behaviour have been conducted using e.g. modified ring-shear, direct-shear or simple-shear devices. In most experimental studies, the lateral deformation is restricted to zero (stiff frames of direct shear and simple shear devices) and the lateral stress is unknown. To gain insights on the influence of an anisotropic stress state on the interface, contact shear tests on ring-shaped samples with various lateral stresses are presented in this work. Therefore, a modified hollow cylinder apparatus with a contact plate and short sample geometries was used. The first results indicate, that neither the anisotropy of the stress state can be neglected, nor the interface behaviour follows straight the soil shearing behaviour for the test setup used here.
Sabine Gehring; Hans Henning Stutz; T. Lohrmann; PH. Foerschler
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
C - Risk analysis and safety evaluation
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