PILE Russian patent published in 2003 - IPC

FIELD: construction engineering; applicable in construction of piles foundation from driven piles. SUBSTANCE: pile has stem whose one end is pointed and the other end has cap. Pile is made with widening part round stem and narrowing part adjacent to widening part on side of cap. Side surface of widening part has elongated protrusions. Novelty consists in that pile has cavity extended along stem from narrowing part towards cap. One end of cavity is located just near narrowing part and is communicated with stem gas by means of channels whose outlet holes are located on narrowing part surface, and cavity other end is communicated with ambient atmosphere by means of channel made for its closing before pile driving and after location of flowing material in preset part of cavity. Technical result of invention consists in reduction of pressure pulsation in flowing material in its suction into stem gap. EFFECT: higher efficiency of use. 3 dwg