CN217028950U

CN217028950U - Curtain slip casting device between stake in pilot tunnel

Info

Publication number: CN217028950U
Application number: CN202221010610.6U
Authority: CN
Inventors: 韩强; 刘亮; 闫建龙; 张志刚; 苑伟家; 杨文杰; 杨阁; 许志康
Original assignee: China Tiesiju Civil Engineering Group Co Ltd CTCE Group; Third Construction Co Ltd of CTCE Group
Current assignee: China Tiesiju Civil Engineering Group Co Ltd CTCE Group; Third Construction Co Ltd of CTCE Group
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-07-22
Anticipated expiration: 2032-04-28

Abstract

The utility model discloses a curtain grouting device between piles in a pilot tunnel, which comprises a reinforcement cage and at least one grouting pipe, wherein the grouting pipe is vertically and fixedly arranged on the outer wall of the reinforcement cage; the bottom end of the grouting pipe is sealed, a plurality of grouting holes are uniformly formed in the pipe wall of the grouting pipe, and check valves are fixedly arranged in the grouting holes; the steel reinforcement cage includes a plurality of main muscle, a plurality of interior stirrup and a plurality of outer stirrup, the main muscle is along circumferencial direction align to grid, and is a plurality of interior stirrup is the heliciform and adorns admittedly main muscle is inboard, and is a plurality of outer stirrup is the heliciform and adorns admittedly the main muscle outside. The utility model realizes the quick and accurate positioning of the grouting position, ensures the controllable diffusion range of the grout, can smoothly form a plugging curtain and effectively improves the water stopping and reinforcing effects; the grouting pipes are placed along with the reinforcement cage, mechanical drilling is not needed, and the multiple grouting pipes can be simultaneously grouted, so that the construction steps are greatly simplified, the working efficiency is improved, and the operation process is simple and convenient.

Description

Curtain slip casting device between stake in pilot tunnel

Technical Field

The utility model belongs to the technical field of subway construction, relates to a grouting plugging technology in hole-pile method construction, and particularly relates to a curtain grouting device between piles in a pilot tunnel.

Background

The subway is a rapid, large-traffic and electric power traction rail transit built in cities, and trains run on a totally closed line. The subway is an urban rail transit system which covers various underground and overground road rights of urban areas, is special, and has high density and high transportation capacity. With the development of urban rail transit and the restriction of urban traffic environment, in order to solve the problem of urban traffic congestion, subway construction is an effective way to solve urban congestion, underground excavation of subway stations is carried out by adopting a hole-pile method, after the construction of drilling piles in pilot tunnels is completed, grouting plugging needs to be carried out on water-containing stratums such as interlayer water and stagnant water among piles, and grouting water stopping and reinforcement are usually carried out on interlayer stagnant water of soil and silty clay among piles by adopting methods such as high-pressure jet grouting and the like.

According to the water stopping method, the holes are drilled on the outer sides of the drilled piles for grouting, the positions of the drilled holes are not easy to control, and the grouting and drilling distances are easy to generate errors, so that slurry diffusion boundaries cannot be connected to form an integral curtain wall, and the underground water plugging effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a curtain grouting device between piles in a pilot tunnel, which aims to solve the problems in the prior art.

The utility model provides a curtain grouting device between piles in a pilot tunnel, which comprises a reinforcement cage and at least one grouting pipe, wherein the grouting pipe is vertically and fixedly arranged on the outer wall of the reinforcement cage; the bottom end of the grouting pipe is sealed, a plurality of grouting holes are uniformly formed in the pipe wall of the grouting pipe, and check valves are fixedly arranged in the grouting holes;

the steel reinforcement cage includes a plurality of main muscle, a plurality of interior stirrup and a plurality of outer stirrup, the main muscle is along circumferencial direction align to grid, and is a plurality of interior stirrup is the heliciform and adorns admittedly the main muscle is inboard, and is a plurality of outer stirrup is the heliciform and adorns admittedly the main muscle outside.

Furthermore, the one-way valve comprises a base, a connecting cylinder and a plugging plug, the connecting cylinder is coaxially and fixedly installed on the base, the plugging plug is coaxially and movably installed in the connecting cylinder, and the bottom end part of the plugging plug is connected with the base; the connecting cylinder is fixedly arranged in the grouting hole.

Furthermore, the base is of a circular plate-shaped structure, two symmetrically arranged bulges are formed on the base, first through holes are formed in the bulges, and external threads are formed on the side wall of the base; the connecting cylinder is of a cylindrical structure, a second groove is formed in the bottom of the connecting cylinder, a first groove is formed in the top of the connecting cylinder, the upper portion of the first groove is of an inverted cone-shaped structure, and the lower portion of the first groove is of a cylindrical structure; the second groove is communicated with the first groove, an internal thread is formed on the inner wall of the second groove, and the connecting cylinder is connected with the base through a thread; the sealing plug is of an inverted cone structure, the sealing plug is matched with the inverted cone structure at the upper part of the first groove, a round bottom plate is arranged at the bottom of the sealing plug, a second through hole matched with the two bulges in shape is formed in the round bottom plate, and the sealing plug is made of an elastic material; the sealing plug penetrates through the connecting cylinder, and the second through holes in the bottom of the sealing plug are buckled on the protrusions respectively.

Furthermore, the bottom end part of the grouting pipe is of a conical structure.

Furthermore, the two grouting pipes are bound to the outer side of the reinforcement cage.

Furthermore, two rows of the grouting holes are vertically and parallelly arranged on the pipe wall of each grouting pipe.

The utility model has the advantages and positive effects that:

1. among this curtain slip casting device between stake in pilot tunnel, the slip casting pipe is adorned at the steel reinforcement cage periphery admittedly, together transfer along with the steel reinforcement cage during construction, the steel reinforcement cage is pour with the pile body structure and is in the same place, make slip casting pipe and pile body form a whole, the slip casting is carried out to the rethread slip casting pipe, the process of slip casting hole mechanical drilling has been saved, the construction steps have been simplified, the slip casting pipe is fixed a position through the steel reinforcement cage simultaneously, the accuracy of slip casting position is controlled, very big guarantee has been brought for slip casting construction quality, stagnant water and reinforcing effect have effectively been promoted.

2. In the curtain grouting device between piles in the pilot tunnel, the one-way valve is arranged in the grouting hole, so that the one-way diffusion of grout is ensured, the blockage caused by the fact that sundries enter the grouting pipe in the pile body pouring process is avoided, and the grouting construction quality is effectively ensured.

3. In the curtain grouting device between piles in the pilot tunnel, the bottom of the grouting pipe is of a conical structure, so that the resistance of a soil body can be reduced in the placing process, and the grouting device is ensured to be installed smoothly.

4. In the curtain grouting device between piles in the pilot tunnel, the grouting pipe is fixedly arranged on the periphery of the steel reinforcement cage, and the grouting holes are arranged on the outer side, so that the grouting quality can be improved, and the influence of a pile body on the diffusion of grout is prevented.

5. When the curtain slip casting device between piles in the pilot tunnel is constructed, a plurality of slip casting pipes can carry out slip casting simultaneously, the construction period is shortened, and the construction efficiency is effectively improved.

6. In this steel reinforcement cage of curtain slip casting device between stake in the pilot tunnel, the outside sets up double-deck stirrup in the owner muscle, sound construction, hold and build the ability reinforce, avoid the steel reinforcement cage to damage at the pile body in-process of pouring.

7. In the curtain grouting device between piles in the pilot tunnel, the sealing plug of the one-way valve is of an inverted cone structure, the edge of the one-way valve deforms when being extruded by internal grout, and the one-way valve is firmly attached in the groove when being extruded by external pressure, so that the one-way output of the grout is ingeniously realized, external sundries are prevented from entering the grouting pipe to cause plugging, and grouting construction is ensured to be smoothly carried out.

8. In this curtain slip casting device between guide tunnel inner pile, the shutoff stopper of check valve passes through connecting cylinder and base firm connection, prevents that the shutoff stopper from breaking away from the slip casting hole port under the thick liquid strikes, effectively promotes construction quality.

9. The grouting position is quickly and accurately positioned by limiting the distance between the grouting pipes through the reinforcement cage, the diffusion range of the grout is controllable, a plugging curtain can be smoothly formed, and the water stopping and reinforcing effects are effectively improved; the grouting pipes are placed together along with the reinforcement cage, mechanical drilling is not needed, and the plurality of grouting pipes can be grouted simultaneously, so that the construction steps are greatly simplified, the working efficiency is improved, and the operation process is simple and convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a top view of the grout tube of the present invention;

FIG. 4 is a schematic view of a plug and connector cartridge of the check valve of the present invention;

FIG. 5 is a schematic structural view of the connecting cylinder and base of the check valve of the present invention;

figure 6 is a cross-sectional view of the check valve of the present invention.

In the figure, 1 is the slip casting pipe, 2 is the steel reinforcement cage, 3 is the slip casting hole, 4 is the check valve, 21 is outer stirrup, 22 is main muscle, 23 is interior stirrup, 41 is the shutoff stopper, 42 is the film, 43 is the second through-hole, 44 is the connecting cylinder, 45 is first recess, 46 is the second recess, 47 is the base, 48 is first through-hole, 49 is the arch.

Detailed Description

The present invention will be described in more detail with reference to the accompanying drawings.

The utility model provides a curtain grouting device between piles in a pilot tunnel, which comprises a reinforcement cage 2 and grouting pipes 1 as shown in figure 1, wherein at least one grouting pipe 1 is vertically and fixedly arranged on the outer wall of the reinforcement cage 2; during grouting, the reinforcement cage 2 is arranged on the periphery of the pile body, so that the grouting pipe 1 and the pile body are integrated, grouting is performed through the grouting pipe 1, and the process of mechanically drilling the grouting holes 3 is omitted. The bottom end of the grouting pipe 1 is sealed, a plurality of grouting holes 3 are uniformly formed in the pipe wall of the grouting pipe 1, check valves 4 are fixedly arranged in the grouting holes 3, and the check valves 4 are used for ensuring the directional diffusion of slurry and preventing impurities from entering the grouting pipe 1 to cause blockage in the pile body pouring process. The bottom end part of the grouting pipe 1 is of a conical structure, so that the soil resistance in the lowering process is reduced. Furthermore, the two grouting pipes 1 are bound to the outer side of the reinforcement cage 2. Two rows of the grouting holes 3 are vertically and parallelly arranged on the pipe wall of each grouting pipe 1, and the two rows of the grouting holes 3 are arranged in a staggered manner. Before the construction, subaerial in advance with slip casting pipe 1 ligature on steel reinforcement cage 2, install slip casting pipe 1 in the 2 outsides of steel reinforcement cage, and slip casting hole 3 arranges towards the outside, can avoid pile body influence thick liquid diffusion in the work progress. During grouting, the grouting holes 3 are simultaneously grouted, so that the grouting time is effectively saved, and the construction process is simplified. Reinforcement cage 2 includes a plurality of main muscle 22, a plurality of interior stirrup 23 and a plurality of outer stirrup 21, main muscle 22 is along circumferencial direction align to grid, and is a plurality of interior stirrup 23 is the heliciform and adorns admittedly main muscle 22 is inboard, and is a plurality of outer stirrup 21 is the heliciform and adorns admittedly main muscle 22 outside.

The check valve 4 comprises a base 47, a connecting cylinder 44 and a plugging plug 41, the connecting cylinder 44 is coaxially and fixedly mounted on the base 47, the plugging plug 41 is coaxially and movably mounted in the connecting cylinder 44, and the bottom end part of the plugging plug 41 is connected with the base 47. The connecting cylinder 44 is fixedly installed in the grouting hole 3. Further, the base 47 is a circular plate-shaped structure, two symmetrical protrusions 49 are formed on the base 47, first through holes 48 are formed in the protrusions 49, and external threads are formed on the side wall of the base 47; the connecting cylinder 44 is of a cylindrical structure, a second groove 46 is formed at the bottom of the connecting cylinder 44, a first groove 45 is formed at the top of the connecting cylinder, the upper part of the first groove 45 is of an inverted cone structure, and the lower part of the first groove 45 is of a cylindrical structure; the second groove 46 is in through connection with the first groove 45, an inner thread is formed on the inner wall of the second groove 46, and the connecting cylinder 44 is in threaded connection with the base 47; the sealing plug 41 is of an inverted cone structure, the sealing plug 41 is adapted to the inverted cone structure on the upper portion of the first groove 45, a circular bottom plate 42 is arranged at the bottom of the sealing plug, a second through hole 43 matched with the two protrusions 49 in shape is formed in the circular bottom plate 42, the sealing plug 41 is made of elastic materials, and preferably, the sealing plug 41 is made of rubber materials; the plug 41 penetrates the connecting cylinder 44, and the second through holes 43 at the bottom thereof are respectively fastened to the protrusions 49. The second through hole 43 and the first through hole 48 are overlapped to form a passage, during grouting, slurry flows into the first groove 45 from the passage, the sealing plug 41 is pressed upwards to enable the edge of the sealing plug 41 to be tilted upwards, the slurry is sprayed out from the edge of the sealing plug 41, the bottom plate 42 of the sealing plug 41 is clamped in the second groove 46 of the connecting cylinder 44, the connecting cylinder 44 is firmly connected with the base 47 through threads, and the sealing plug 41 cannot be separated from the port 3 of the grouting hole under the impact of the slurry under the grouting state; when the pile body is poured, cement paste extrudes the inverted cone-shaped part of the plugging plug 41 from the outside, so that the plugging plug 41 is firmly attached in the first groove 45, the plugging effect is realized, and the plugging of the grouting pipe 1 caused by the fact that the cement paste flows into the grouting hole 3 is avoided.

The using method of the utility model comprises the following steps:

after pilot tunnel drilling is completed, a grouting device is placed at the edge of the pilot tunnel, then a pile body is poured in the pilot tunnel, after the pile body is poured, double-liquid grout is injected into a grouting pipe 1 of the grouting device to carry out curtain construction, the grout is diffused outwards through a one-way valve 4, and finally a curtain wall is formed outside the pile body and between piles, so that soil body reinforcement and water stop effects are achieved.

The grouting position is quickly and accurately positioned by limiting the distance between the grouting pipes through the reinforcement cage, the diffusion range of the grout is controllable, a plugging curtain can be smoothly formed, and the water stopping and reinforcing effects are effectively improved; the grouting pipes are placed along with the reinforcement cage, mechanical drilling is not needed, and the multiple grouting pipes can be simultaneously grouted, so that the construction steps are greatly simplified, the working efficiency is improved, and the operation process is simple and convenient.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the scope of the utility model.

Claims

1. A curtain grouting device between piles in a pilot tunnel is characterized by comprising a reinforcement cage (2) and at least one grouting pipe (1), wherein the grouting pipe (1) is vertically and fixedly arranged on the outer wall of the reinforcement cage (2); the bottom end of the grouting pipe (1) is sealed, a plurality of grouting holes (3) are uniformly formed in the pipe wall of the grouting pipe (1), and check valves (4) are fixedly arranged in the grouting holes (3);

reinforcement cage (2) include a plurality of main muscle (22), a plurality of interior stirrup (23) and a plurality of outer stirrup (21), main muscle (22) are along circumferencial direction align to grid, and are a plurality of interior stirrup (23) are the heliciform and adorn admittedly main muscle (22) are inboard, and are a plurality of outer stirrup (21) are the heliciform and adorn admittedly main muscle (22) outside.

2. A curtain grouting device between piles in a pilot tunnel according to claim 1, characterized in that the one-way valve (4) comprises a base (47), a connecting cylinder (44) and a plugging plug (41), the connecting cylinder (44) is coaxially and fixedly arranged on the base (47), the plugging plug (41) is coaxially and movably arranged in the connecting cylinder (44), and the bottom end part of the plugging plug (41) is connected with the base (47); the connecting cylinder (44) is fixedly arranged in the grouting hole (3).

3. The curtain grouting device between piles in a pilot tunnel according to claim 2, characterized in that the base (47) is a circular plate-shaped structure, two symmetrically arranged bulges (49) are formed on the base (47), a first through hole (48) is formed on each bulge (49), and the side wall of the base (47) is provided with external threads; the connecting cylinder (44) is of a cylindrical structure, a second groove (46) is formed in the bottom of the connecting cylinder (44), a first groove (45) is formed in the top of the connecting cylinder, the upper portion of the first groove (45) is of an inverted cone structure, and the lower portion of the first groove (45) is of a cylindrical structure; the second groove (46) is communicated with the first groove (45), an internal thread is formed on the inner wall of the second groove (46), and the connecting cylinder (44) is connected with the base (47) through the thread; the sealing plug (41) is of an inverted cone structure, the sealing plug (41) is adapted to the inverted cone structure at the upper part of the first groove (45), the bottom of the sealing plug is provided with a circular bottom plate (42), the circular bottom plate (42) is provided with second through holes (43) matched with the two protrusions (49) in shape, and the sealing plug (41) is made of elastic materials; the sealing plug (41) penetrates through the connecting cylinder (44), and the second through holes (43) at the bottom of the connecting cylinder are respectively buckled on the bulges (49).

4. The apparatus for curtain grouting between piles in a pilot tunnel according to claim 1, wherein the bottom end of the grouting pipe (1) is of a tapered structure.

5. A curtain grouting device between piles in a pilot tunnel according to claim 1, characterized in that two grouting pipes (1) are bound on the outer side of the reinforcement cage (2).

6. The curtain grouting device between piles in a pilot tunnel according to claim 1, characterized in that two rows of grouting holes (3) are vertically and parallelly arranged on the wall of each grouting pipe (1), and the two rows of grouting holes (3) are staggered.