CN212956538U

CN212956538U - Bored concrete pile ultra-deep slip casting device

Info

Publication number: CN212956538U
Application number: CN202021527634.XU
Authority: CN
Inventors: 李鸿玮; 马岷成; 李建军; 张彦辉; 樊娟; 罗琦
Original assignee: Gansu Construction Design Consulting Group Co ltd
Current assignee: Gansu Construction Design Consulting Group Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-04-13
Anticipated expiration: 2030-07-29

Abstract

The utility model provides an bored concrete pile ultra-depth degree slip casting device, including setting up in the support at stake hole top, be equipped with the slip casting pipe that is vertical setting on the support, the slip casting pipe can be followed vertical direction and removed, and the bottom of slip casting pipe is equipped with the toper end, and the lower part of slip casting pipe evenly is equipped with a plurality of grout outlet along slip casting pipe length direction, and the top that the upper portion of slip casting pipe was equipped with vibrating motor slip casting pipe is connected with the conveying pipeline, be connected with the hopper on the conveying pipeline, the slip casting pipe is equipped with the high-pressure pump with the junction of conveying pipeline. The utility model is provided with the vibrating motor and the spring on the grouting pipe, so that the grouting pipe can extend into the bearing layer to carry out ultra-deep grouting, the cast-in-place pile is more compact, and the bearing capacity of the cast-in-place pile is effectively improved; simple structure, convenient use and low manufacturing cost.

Description

Bored concrete pile ultra-deep slip casting device

Technical Field

The utility model belongs to the technical field of bored concrete pile slip casting, a bored concrete pile ultra-deep degree slip casting device is related to.

Background

The cast-in-place pile is a pile formed by forming a hole in place and pouring concrete or reinforced concrete. The cast-in-situ bored pile with a single process is easy to cause hidden troubles such as pile bottom sediment, pile peripheral mud film and the like due to the inherent defects of the pore-forming process. The post-grouting technology of the bored pile is a scientific and advanced technical method that a grouting pipeline and a grouting device are preset at the bottom or the side of the pile when the pile is formed, after a pile body reaches a certain strength, a high-pressure grouting pump is used for grouting slurry taking cement as a main agent through the grouting pipeline, and hole bottom sediment and pile side mud covers are solidified, so that the inherent defects of the traditional cast-in-place pile construction process are eliminated, and the purposes of improving the bearing capacity of the pile and reducing the sedimentation amount are achieved.

In the prior art, during the construction process of the cast-in-place pile after the ultra-deep grouting, a series of problems which are urgently needed to be solved, such as the design requirement can not be met after the cast-in-place pile is grouted, the peripheral grouting is not uniform, the bearing capacity value of the cast-in-place pile after the grouting is not obviously improved, and the cast-in-place pile is not compact, exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device that is used for burying the pipeline underground in to the bored concrete pile to the problem that prior art exists.

Therefore, the utility model adopts the following technical scheme:

the utility model provides an bored concrete pile ultra-depth degree slip casting device, is including setting up in the support at stake hole top, be equipped with the slip casting pipe that is vertical setting on the support, the slip casting pipe can be followed vertical direction and removed, and the bottom of slip casting pipe is equipped with the toper end, and the lower part of slip casting pipe evenly is equipped with a plurality of grout outlet along slip casting pipe length direction, and the top that the upper portion of slip casting pipe was equipped with vibrating motor slip casting pipe is connected with the conveying pipeline, be connected with the hopper on the conveying pipeline, the slip casting pipe is equipped with the high-pressure pump with the junction of conveying pipeline.

Further, the support comprises a supporting seat, a sleeve is fixed on the supporting seat, and the grouting pipe is installed in the sleeve and can move in the vertical direction.

Furthermore, the upper portion cover of slip casting pipe is equipped with the spring that is compression state, the one end of spring is fixed in the outer wall of slip casting pipe, and the other end is fixed in on the sleeve.

Further, the distance between the pulp outlet holes is 0.4-1 m.

Furthermore, the grouting pipe is a seamless steel pipe with the diameter of 40-50 mm.

Further, the diameter of the slurry outlet hole is 10-30 mm.

The beneficial effects of the utility model reside in that: the vibration motor and the spring are arranged on the grouting pipe, so that the grouting pipe can conveniently extend into the floating layer for ultra-deep grouting, the cast-in-place pile is more compact, and the bearing capacity of the cast-in-place pile is effectively improved; simple structure, convenient use and low manufacturing cost.

Drawings

FIG. 1 is a schematic view of the present device prior to priming;

FIG. 2 is a schematic view of the device in the configuration of perfusion;

in the figure, 1-bracket, 101-supporting seat, 102-sleeve, 2-grouting pipe, 3-conical end, 4-grout outlet, 5-vibration motor, 6-conveying pipe, 7-high pressure pump, 8-spring, 9-hopper and 10-pile hole.

Detailed Description

As shown in fig. 1, the ultra-deep grouting device for the cast-in-place pile comprises a support 1 arranged at the top of a pile hole 10, a grouting pipe 2 vertically arranged is arranged on the support 2, the grouting pipe 2 is a seamless steel pipe with the diameter of 40-50mm, the grouting pipe 2 can vertically move up and down, specifically, the support 1 comprises a support seat 101, the support seat 101 is annular, the diameter of the grouting pipe is larger than that of the pile hole 10, a sleeve 102 is fixed on a supporting seat 101, the sleeve 102 is positioned at the axle center of the pile hole 10, the grouting pipe 2 is arranged in the sleeve 102 and can vertically move up and down in the sleeve 102, the upper part of the grouting pipe 2 is sleeved with a spring 8, and spring 8 is compression state, and the one end of spring 8 is fixed in the outer wall of slip casting pipe 2, and the other end is fixed in on sleeve 102, and the effect of setting up spring 8 is that slip casting pipe 2 moves down under the effect of spring 8 elasticity to the lower part of slip casting pipe 2 inserts in the laitance layer of stake hole 10 bottom.

The bottom of slip casting pipe 2 is equipped with toper end 3, toper end 3 is big end up's toper structure down, set up the toper end and can be convenient for during the lower part of slip casting pipe 2 stretches into the topsoil layer of stake hole 10 bottom, the lower part of slip casting pipe 2 evenly is equipped with a plurality of grout outlet 4 along slip casting pipe 2 length direction, the interval between grout outlet 4 is 0.4-1m, the diameter of grout outlet 4 is 10-30mm, the upper portion of slip casting pipe 2 is equipped with vibrating motor 5, the top of slip casting pipe 2 is connected with conveying pipeline 6, be connected with the hopper 9 that is used for holding the slip casting raw materials on conveying pipeline 6, the junction of slip casting pipe 2 and conveying pipeline 6 is equipped with high-pressure pump 7.

When the utility model is used, the device is arranged on the pile hole 10, in particular, the supporting seat 101 on the bracket 1 is fixed at the edge of the top end of the pile hole 10, meanwhile, the position of the grouting pipe 2 is adjusted to enable the axial lead of the grouting pipe 2 to be collinear with the axial lead of the pile hole 10, the length of the grouting pipe 2 is selected according to the depth of the pile hole 10, firstly, the lower part of the grouting pipe 2 is inserted into a soil layer at the bottom end of the pile hole 10, specifically, firstly, the vibration motor 5 is started, the vibration motor 5 drives the grouting pipe 2 to vibrate, meanwhile, the spring 8 generates downward elastic force on the grouting pipe 2, the grouting pipe 2 can extend into the soil floating layer at the bottom end of the pile hole 10 through the conical end 3 at the bottom end of the grouting pipe until the conical end 3 reaches the bearing layer (as shown in figure 2), the soil in the soil floating layer is loose, the grouting pipe 2 can be inserted without a traditional hammering mode, and then grouting operation can be carried out after the cast-in-place pile is over-deep; during grouting operation, different materials are added into the hopper 9 in batches for grouting operation, raw materials of coarse-grained soil, fine-grained soil and unsaturated loose soil are added into the hopper 9 in sequence, the raw materials are injected into the pile hole 10 through the grout outlet 4 at the lower part of the grouting pipe 2 by providing power through the high-pressure pump 7, the coarse-grained soil can push the floating soil at the bottom end of the pile hole 10 to the side wall of the pile hole 10, so that the bottom end of the pile hole 10 is free of floating soil accumulation, and the stability of a cast-in-place pile can be improved; the fine soil and the unsaturated loose soil can reinforce the cast-in-place pile, and finally water and mud-sand slurry are poured into the hole pile 10 and poured to the top surface of the pile hole 10, so that the whole grouting operation can be completed.

Claims

1. The utility model provides a bored concrete pile ultra-depth degree slip casting device, its characterized in that, including setting up in the support at stake hole top, be equipped with the slip casting pipe that is vertical setting on the support, the slip casting pipe can be followed vertical direction and removed, and the bottom of slip casting pipe is equipped with the toper end, and the lower part of slip casting pipe evenly is equipped with a plurality of grout outlet along slip casting pipe length direction, and the top that the upper portion of slip casting pipe was equipped with vibrating motor slip casting pipe is connected with the conveying pipeline, be connected with the hopper on the conveying pipeline, the slip casting pipe is equipped with the high-pressure pump with the junction of conveying pipeline.

2. The apparatus of claim 1, wherein the support comprises a support base, a sleeve is fixed on the support base, and the grouting pipe is mounted in the sleeve and can move in a vertical direction.

3. The ultra-deep grouting device for the cast-in-place pile of claim 1, wherein a spring is sleeved on the upper part of the grouting pipe, one end of the spring is fixed on the outer wall of the grouting pipe, and the other end of the spring is fixed on the sleeve.

4. The ultra-deep grouting device for the cast-in-place pile of claim 1, wherein the distance between the grout outlet holes is 0.4-1 m.

5. The ultra-deep grouting device for the cast-in-place pile of claim 1, wherein the grouting pipe is a seamless steel pipe with the diameter of 40-50 mm.

6. The ultra-deep grouting device for the cast-in-place pile of claim 1, wherein the diameter of the grout outlet is 10-30 mm.