SEARCH FOR RESERVES OF BEARING CAPACITY OF PYRAMIDAL PILES USING BEM

Vinnytsia National Technical University Construction – is one of the prominent branches of the national economy in the historical aspect of its development. The leading task of the designing is to determine the strength of building structures. Therefore, TDS research and related calculations are most responsible in construction. Mathematical model of a technical object at the micro level is a system of differential equations in partial derivatives, the exact solution of which can be obtained only in a few partial cases, so a discrete model is built using numerical methods that use Poisson's idea . Intensive development and widespread use of computers significantly brought fundamental mathematical problems closer to applied ones, strengthened their interaction. The emergence of a new, powerful and general method of research - numerical experiment, as never before closely linked the physical content of the problem, its mathematical formulation, numerical methods of calculation and modern computers. The numerical method of boundary elements is used in the work. A promising way to develop foundations and foundation structures is the usage of the relations of the theory of plastic flow, and the level of development of soil mechanics significantly affects the efficiency and reliability of decisions. One of the types of raising the bearing capacity of piles is, in addition to taking into account the nonlinear work of the soil base, also the arrangement by expanding the soil base of gravel additives. Compacted soil in the heel area allows to transfer higher loads to the pile.