Modeling of the Resistance of a Bored Hanging Pile

It is proposed to test a bored hanging pile with a static constantly increasing load (CRL) with continuous measurement of settlement, with registration of the pressing force and settlement in increments of no more than 0.005 mm of settlement. Tests with CRL were carried out on a working bored pile, in semi-natural experiments with mini piles and on a laboratory stand. In all cases, an abrupt increase in settlement, a cyclical change in the velocity and acceleration of settlement were recorded. This reaction is interpreted by the authors as an alternation of elastic deformation of the pile base and local destruction of soils by shear and separation cracks, causing a jump in the movement of the pile. According to the data of such a test, the deformation parameters of the pile base are divided into elastic and inelastic components. This makes it possible to determine the calculated load on the pile directly from the test data in real construction conditions, to justify the similarity conditions for the distribution of test results to all working piles of this foundation, including those with other dimensions, to justify the forecast of foundation settlement over time based on the test results, to determine the geometry of the boundaries of the pile base and stresses on them for elastic calculations stresses between piles in the foundation of the structure.