INTEGRATION WORK OF PILE OR CONTINUOUS WALL AND FOOTING

PURPOSE:To prevent the reduction of prestress by a method in which the end of a steel material is projected from a footing, the steel material is tensed by using a fixing tool to introduce prestress force into the steel material, and a pile or continuous wall and the footing are integrated. CONSTITUTION:A PC pile 14 in which plural PC steel materials 10 are buried in a tense state in concrete is driven into the ground 16, the upper end 26 of the PC pile 14 is cut off so slightly project the pile head 18 to the ground surface, and the steel material 10 is left as an upper end exposure 28 without being cut off. Concrete is placed to form a footing 24, and the upper end of the steel material 10 is slightly projected upwards by forming a recessed fixing portion 30 on the upper end of the footing 24. A fixing tool 32 is inserted into the fixing portion 30, the steel material 10 is tensed to introduce prestress force between the pile head 18 and the footing 24, and thereby the PC pile 14 and the footing 24 are integrated.