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

摘要

PURPOSE: To achieve confirmation of the support force of a castin-place pile and the increase of the support force of a tip ground through a low-cost device. ;CONSTITUTION: First, a cylindrical auxiliary device 10 having a partition plate 20 positioned in a given height at the interior thereof is installed at the bottom part of a pile hole H, and after the lower end of a press-in pipe 40 is caused to front on a position below the partition plate 20 of the auxiliary device 10, concrete is placed in the pile hole H to build a pile 50. After the pile 50 is cured, curable fluid 60 is pressed in through the press-in pipe 40 with a given pressure, and a pile tip part is divided into upper and lower sections in a position below the partition plate 20 of the auxiliary plate 10 by means of the press-in force of the fluid. A tip ground is consolidated through peripheral surface friction of the pile 50 serving as a reaction force to increase a support force, and a support force is conformed by means of the press-in force of the fluid.;COPYRIGHT: (C)1994,JPO&Japio