Современные представления несущей способности забивных свай (по результатам погружения и работе, свай в грунте)

Abstract

RU: Рассматривается вопрос формирования отказа забивной сваи. Делается предположение что отказ сваи — это деформация слоя грунта расположенного под формирующимся уплотненным ядром от сплошной мгновенной нагрузки, передаваемой через подошву уплотненного ядра от удара молота по голове сваи. Дается предложение определения отказа сваи по условию энергетического равновесия — формирования энергии удара молота и ее израсходование на погружение сваи.

EN: The issue of the formation of denial of driven piles is discussed. It is assumed that the pile denial is the deformation of the soil layer located below the forming firm zone under the continuous instantaneous load transmitted through the soles of the firm cores from the blow of the hammer on the head of the pile. Propose to define the pile denial under the condition of energy balance — the formation energy of the hammer blow, and its expenditure on the submerged piles.

It is given the ground for the formation of the optimal distances between the axes of the piles in the bunch and a pile field. It is specified the while crossing compacted zones overcrowded ground moves in the slit formed around the pile shaft, which eliminates the transmission of pressure on the side surface of the pile shaft and prevents movement of adjacent piles.

It is given the ground for the formation of loosening soil in between pile uneven deformation loosening soil, the formation of holes and breaking the contact between the sole of the grillage and the foundation that violates their common work and does not allow to relieve piles under the load due to the inclusion of the pile grillage of the pile foundation in common work with the foundation.