CONSTRUCTION METHOD FOR PILE USING BURYING JIG, AND BURYING JIG FOR PILE CONSTRUCTION

摘要

In order to reduce the number of processes and improve the horizontal bearing capacity of a pile, using a burying jig (20) provided with an exterior housing (21) which functions as a hopper capable of performing extension excavation of the ground (G) and storing a ground improvement material (30), and a guide (22) which maintains the state in which the pile core of a pile (10) approximately matches the center of rotation of the burying jig (20), the pile (10) is maintained while approximately matching the center of rotation of the burying jig (20), the pile (10) is buried in the ground using the burying jig (20) while the extension excavation of the area around the pile (10) is performed by the exterior housing (21), the ground improvement material (30) stored in the exterior housing (21) is poured into a portion subject to the extension excavation while the burying jig (20) is pulled up from the ground to thereby improve the ground around the pile (10). It is preferable to use the burying jig (20) provided with an opening and closing lid (24) which opens and closes an outlet for the ground improvement material (30) by meeting with resistance in the ground when the burying jig (20) is propelled into the ground and when the burying jig is pulled up from the ground.