Calculation of Long Bored Piles for Vertical Loading

The results of tests of vertically loaded long bored piles in clayey soils by the immersion jack method are obtained. The peculiarities of soil resistance formation under the lower end and along the lateral surface of piles are shown. The necessity of calculation of such piles on the soil by the second limit state with consideration of the pile shaft compressibility is substantiated. A methodology for calculating the settlement of a single pile and determining the allowable load thereon at a given settlement of the pile head based on the kinematic scheme of including the soil base and the pile shaft in the work upon pile loading is developed. The results of numerical studies on the basis of pile tests on an actual object are presented.