SU1615282A1 - Method of erecting cast-in-place hollow pile - Google Patents

Abstract

The invention relates to construction and is intended for the installation of hollow bored piles. The aim of the invention is to eliminate deformations of the shell and reduce the complexity of its extraction. The method is carried out as follows. In the ground, a well is formed, an inventory core 3 with an outer shell 4 is installed in it, and a barrel is formed from the concrete mixture in the space between the walls of the well and the shell with feeding the thixotropic working medium into the space between the shell 4 and the core 3. After the working medium is supplied, the shell 4 is removed to setting concrete mix. 5 il.

Description

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FIG.

h

i The invention relates to the construction || designed for the construction of bored piles. : The aim of the invention is to eliminate deformations of the shell and reduce the complexity of its extraction. I FIG. 1 shows the filling of the well with concrete to a depth of H; in fig. 2 - core in the borehole in a predetermined position; in fig. 3 —sha of annular section, prepared by the proposed method; on 1) 4 - core pile, longitudinal cutting; in fig. 5 is a section A-A in FIG. four.

The method is carried out as follows.

A funnel 1 with a pipe 2 is used to supply concrete to the well. The orientation of the core inventory 3 with shell 4 in the well is carried out using lanterns 5 on frame 6. The core 3 with shell 4 is fixed in height by means of a conductor 7 and limiter 8 on shell 4 The thixotropic mass is fed through the channel 9 through the holes J10. The mass filling in the space between the Shell 4 and the core 3 controls the mass i through the opening 11 of the shell 4. When assembling the core 3 with the shell 4, alignment is carried out by means of guides 12 mounted on the shell 4. With a drilling machine, a well is drilled at a predetermined depth. Then it is loaded into: a skeleton 6 with lamps 5, a jig 7, onto which a funnel 1 is installed with a pipe 2, and the well is filled with cast concrete. After this, the funnel 1 with the pipe 2 is removed and the inventory core 3 with the shell 4, which are mutually centered by the guides 12 fixed on the shell 4, is immersed in the concrete until the limiter 8 on the shell 4 stops against the jig 7. As a result, the concrete is displaced into the gap between the borehole wall and the shell 4 to the surface.

5 In the future, channel 9 is produced

injecting a thixotropic working medium into the annular cavity of the core 3, which through the holes 10 enters the space between the shell 4 and the core 3 and such

10 fills all the annular space until the mass exits through the opening 11. After that, the concrete shell 4 is removed, while the concrete in the annular cavity settles and compresses the thixotropic mass

15 around the core 3, which prevents the concrete from sticking to the core 3.

The core 3 is removed before the concrete mix is set, as a result of which a hollow bore is formed and its ring section 20 is formed.

Claims (1)

The invention of the method of erection of a stuffed hollow pile, including the formation of a well, installation of an inventory core with an outer shell into it, and formation of a trunk concrete mixture in the space between the borehole walls and the shell with supply of the working medium into the space between the shell and the core and subsequent extraction of the core and shell, characterized in that, in order to avoid deformation of the shell and reduce the complexity of its 35, a thixotropic working medium is fed into the space between the shell and the core, and the shell is removed before the concrete mix is set immediately after 40 supply of working medium. ten. 11 P 12 FIG. five