Verification of bearing capacity of cast-in-place pile and augmentation manner

摘要

PURPOSE: To achieve confirmation of the support force of a cast-in-place pipe and the increase of the support force of a tip ground through a low-cost device. ;CONSTITUTION: A cylindrical auxiliary device 10 is installed to the bottom part of a pile hole H, the lower end of a press-in pipe 30 is positioned in the middle of the internal height of the auxiliary device 10, and concrete is placed in the pile hole H to build a cast-in-place pile 40. After curing of the pile 40, curable fluid 50 is pressed in through the press-in pipe 30 to divide the tip part of the pile into upper and lower sections. The tip ground is consolidated through peripheral surface friction of the pile 40 serving as a reaction force to increase a support force, and the support force is confirmed by means of the current press-in force of fluid.;COPYRIGHT: (C)1994,JPO&Japio