METHOD OF PILE CONSTRUCTION Russian patent published in 2003 - IPC

FIELD: construction engineering; applicable in construction of piles in soft grounds. SUBSTANCE: novelty in method of pile construction consists in that after sinking of auger tool to hole required depth, thixotropic mortar is supplied through cavity of anger tool to hole bottom to fill hole lower part to height not less than three flights of auger tool. Then, the first portion of working material is supplied also through cavity of auger tool to height not less than two flights of auger tool with simultaneous displacement of thixotropic mortar from hole bottom upward, over hole walls. Further on, working material is compacted in hole bottom by direct rotation of auger tool, alternating lifting of auger tool with its reverse rotation and portion supply of working material also through auger tool cavity are performed to provide for location of, at least, lower flight of auger tool in working material before supply into hole of each next portion working material. In so doing, performed, at least, on one section of hole height offer supply of portion of hardening working material, is its compaction in direct rotation of auger tool. EFFECT: reduced labor and material consumption and power intensity with simultaneous reduction of construction terns and provision of high bearing capacity and high quality of structure. 4 cl, 4 dwg