Axial behaviour of displacement pile groups in sand based on model tests in a calibration chamber
Axial behaviour of displacement pile groups in sand based on model tests in a calibration chamber
This paper presents results of physical model tests with a 3 x 3 displacement pile group in sand. The test results are evaluated to investigate mainly the influence of spacing on the axial group bearing behaviour. Accordingly, the instrumentation of the model piles allows one to identify the effect of pile-pile interaction on skin friction and tip resistance of the group piles depending on their position inside the group. First results of this experimental study show that for a spacing of three pile diameters the resistance of a driven group pile in medium-dense sand is higher than the resistance of a comparable unaffected single pile. This insight substantiates that there is a great potential in an optimized design assessment of the axial resistance of displacement pile groups which is intended to be considered for a sustainable pile design in future.
F. Mitlmeier; Christian Moormann
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
A - New developments on structural design
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