Piling formation method of composite type expanded pile and piling forming equipment of combined type expanded pile

摘要

The method for forming a pile of a composite type expanded pile of the present invention is a method of forming a hole by screwing in and pushing out using a combined type pushing expanding drilling tool of a pile forming facility of a composite type expanded pile, rotating it upward At the same time as the enlargement body of the combined type extrusion expansion drilling tool enlarges and expands, by activating the concrete pump and injecting the pile material to the pile hole to the pile top elevation, the composite type pushing spread pile . Also disclosed is a composite stamp spreading drill tool including a drill rod in which a plurality of extension members are provided in a thread portion of a drill bit and a pile forming facility of a composite stamp spreading pile including the control system thereof.