Effective modes of driving piles into seasonally frozen Soilt

Abstract

Abstract The disadvantage of this method is the additional costs of using drilling machines and disposal of soil, which also leads to an increase in labor costs and a decrease in work productivity. It is necessary to place an additional set of drilling equipment, an excavator and vehicles for soil removal at the construction site. The authors proposed a technology, when the piles are driven into the leader wells to the depth of the frozen soil to solve this problem. The wells are arranged by means of a thermal vibrolider, installed on the head of a pile driver, on its adjacent face with a pile hammer and moved along it with the help of guides under the cable transmission action. Thermovibrolider is made in the form of a cylindrical hollow rod with a tip, where a vibrating submer is installed. A heating coil is installed in the tip, and there are ribs along its lateral surface, used for cutting soil and breaking its solidity, but also for transferring additional heat to it, which leads to intensification of thawing processes. The presented technological solution makes it possible to increase the efficiency and reliability of the driving piles process into such soil by eliminating of pile shafts destruction during their immersion through the frozen layer, as well as reducing the values of the piles deviations in the planned position.