STEEL PIPE PILE FOR COMPOSITE PILE CONSTRUCTION, AND CONSTRUCTION METHOD OF COMPOSITE PILE

摘要

PROBLEM TO BE SOLVED: To provide a construction method of a composite pile for repairing ground strength to the same extent as the conventional ground and facilitating simultaneous construction of pile laying in the ground and repair ground construction. SOLUTION: The construction method of the composite pile includes ejecting a ground repair liquid from a ground repair liquid ejection hole 8 to rotate and press a pile 1 into a predetermined depth while agitation blades 4 preceding the ground repair liquid ejection hole 8 press soil around a steel pipe part 2 in the same direction as the rotating direction of the steel pipe part 2, and carrying out rotational press-in of the pile 1 and agitation and mixing by the agitation blades 4 with agitation holes 9 and by a bottom enlarging blade 3 to simultaneously carry out construction of the repair ground and laying of the pile into the ground. COPYRIGHT: (C)2011,JPO&INPIT