SPIRAL PILE PROPULSION AUXILIARY MEANS AND SPIRAL PILE PROPULSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a spiral pile propulsion auxiliary means and a spiral pile propulsion method in which the spiral pile can be advanced at a low cost and easily even in the ground in which obstacles exist and in which the spiral pile capable of exhibiting a sufficient bearing capacity can be installed.SOLUTION: The present invention relates to spiral pile propulsion auxiliary means 1 which assists in spiral pile 2's propulsion by interlocking rotation and descent of the spiral pile 2 when the spiral pile 2 is advanced and installed in the ground 3a. The propulsion auxiliary means 1 comprises an insertion part 12 into which the spiral pile 2 is inserted and a co-rotation prevention part 13 fixed to the ground, and in the insertion part 12 a space y capable of vibrating the spiral pile 2 to the propulsion axial direction A without rotating the spiral pile 2 or the space y capable of rotating the spiral pile 2 without lifting or dropping the spiral pile 2 is formed with the spiral pile 2.