METHODS AND DEVICES FOR IMPROVING THE SUBSOIL

摘要

The object of the present invention relates to a method for producing drilled piles, wherein a drilling tool is sunk into the subsoil (28) by applying a drilling torque (48) and a vertical force (50), the drilling tool is then again retracted and an additional material (52) is introduced into the resulting bore. According to the invention, the drilling tool is set in vibration (58) by one or more actuators (56) while it is sunk into the subsoil (28) and/or during the retraction of the drilling tool, wherein a resulting oscillation amplitude has at least one horizontal portion (62). The invention also relates to a corresponding drilling tool for producing boreholes or drilled piles in a subsoil (28). The present invention further relates to a depth vibrator (10) for the displacement and consolidation of subsoil material as well as a method for the displacement and consolidation of subsoil material.