On the question about the installation of driven piles in punched wells

Abstract

The patented area of focus in the pile foundation construction - driven piles in punched (crushed) wells - is described. The most rational designs and promising technological schemes of their device are described, depending on the geotechnical and hydrogeological conditions of the development site. It has been established by analysis that the most developed technological schemes for the installation of pile foundations are most expedient to apply on bases composed of weak water-saturated clay, biogenic, loess subsidence, bulk, etc. specific soils, and the underlying bearing layer of compressible soil. To protect the foundations from the aggressive impact of soil-water-gas environment of natural or man-made origin on them, it is proposed to usescreens made of flexible synthetic elastic and other types of shells. It is proposed to arrange the foundations of hollow driven piles and blocks with a broad base according to a new technological scheme. The main technological operations in the considered soil conditions include punching a well to the underlying bearing soil layer; backfilling of hard and loose ground material into the punched hole; the formation of a broad base of a hard soil material; immersion (driving) in the the formation of a broad base of a hard soil material; immersion (driving) in the buried part of the well of precast concrete piles.