Nowadays, the use of pile-plate foundations has received extensive development, which takes into account the soil inclusion in the work under its plate part. We proposed a new design of a plate-pile foundation and an engineering method for determining the main parameters of such a foundation, where one of the parameters is the piles settlement under the action of the negative friction forces Pn. As far as is known, field testing of production piles using pressing-in loads is the most reliable method for determining their actual load-bearing capacity. We carried out full-scale tests of a multi-section pile with the loading at depth, on the basis of which a comparative analysis of the settlement of single piles from the action of the negative friction forces, obtained with the help of adapted and existing methods and experimental data
The paper considers the domestic experience of implementing the advanced DLT method of research into the bearing capacity of bored piles which is based on principles of the stress wave theory and included in the American and European regulatory documents. The possibility of using this test method to determine the design loads on the piles has been shown. A regression model has been developed for determining the pile ultimate resistance relative to soil based on the data of the pile parallel tests using the DLT and SLT methods
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