Objective
Embankments constructed adjacent to foundations, which are piled through soft alluvial deposits to a competent substratum, cause lateral deformation of the soft soil and hence, lateral thrust on the piles. These passive earth pressures occur when soil moves further than, or past, the piles. They induce pile bending moments and displacements, additional to those arising from structural loads, which may critically affect the serviceability of the piled structure.
Novel foundation techniques, such as buttonholed piles have been invented in Germany, with the assistance of Wuppertal Universitaet. The length of the pile in the upper soft layer is surrounded by an annulus of material with low shear strength, so that this passive lateral earth pressure may be minimized. This system has been implemented previously at 2 European sites, but without sufficient knowledge of the fundamental soil structure interactions to optimize the design, technically and economically.
Comparisons of existing design rules have been made, alongside a series of centrifuge model tests on the 10 m diameter beam at the Geotechnical Centrifuge Centre. Data was obtained from this technique to evaluate the soil structure interaction, leading to the development of optimal design codes for piles located adjacent to surcharge loads.
Fields of science (EuroSciVoc)
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CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Coordinator
CB2 1PZ Cambridge
United Kingdom
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