JIG FOR PILE DRIVING

The present invention pertains to a piling construction tool that comprises a spiral collar to allow uniform application of support pressure for holding a piling, wherein the spiral collar has a connecting unit to be connected to a casing tube rotation device and a holding unit to hold the piling. The weight of the connecting unit is 1.05 times or more the weight of the holding unit. In addition, the connecting unit and the holding unit are segmented into two or more sections along the circumference of the piling; the holding unit is segmented into two or more segmented sections along the axial direction of the piling; and each segmented section comprises a distal end face that faces the outer face of the piling, that is bent at a bent portion extending in the axial direction of the piling, and that has a flat shape, and a pair of contact faces that are disposed on the distal end face with the bent portion therebetween and that have flat shapes.