Grouting pipe device and grouting pipe construction method

Abstract

The invention provides a grouting pipe device and a grouting construction method.The grouting pipe device comprises a grouting pipe supporting structure, a side grouting pipe arranged in the grouting pipe supporting structure, a pile bottom grouting pipe and a pile bottom structure assembly arranged at the bottom end of the grouting pipe supporting structure; the pile bottom structure assembly comprises a pile bottom upper structure connected with the side grouting pipes and the pile bottom grouting pipes and a pile bottom lower structure connected with the pile bottom upper structure. A grout outlet pipe communicating with the side grouting pipe is arranged in the pile bottom upper structure, and the grout outlet direction of the side grouting pipe is perpendicular to the surface of the grouting pipe. The grout outlet direction of the grout outlet pipe is perpendicular to the surface of the grouting pipe, so that soil cannot enter the grouting pipe, the situation that grout outlet holes of the grouting pipe are completely wrapped by concrete can be avoided, follow-up grouting is in a smooth state, and the construction quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a grouting pipe device and a grouting pipe construction method. Background Art

[0002] When constructing a relatively large building, grouting pipes are usually required during the construction process. Grouting pipes can play an important role in bearing in various types of buildings. In the prior art, grouting pipes are mostly hollow cylindrical. When the grouting pipes are driven into the ground, soil can easily enter the inside of the grouting pipes from the lower port of the grouting pipes, thereby blocking the grouting pipes and making it impossible to perform normal grouting work. In addition, during the process of pouring concrete for the pile foundation, the grouting holes at the bottom of the grouting pipe at the bottom of the pile and the grouting holes on the pile side grouting pipes can easily be completely wrapped by the pile body concrete. If the plugs are not opened in time, the subsequent grouting pressure will be too high, or even the grouting holes cannot be opened, which needs to be improved. To this end, we propose a grouting pipe device and a grouting pipe construction method. Summary of the invention

[0003] In view of the above-mentioned defects of the prior art, the object of the present invention is to provide a grouting pipe device and a grouting pipe construction method, by making the slurry discharge direction of the grouting pipe perpendicular to the surface of the grouting pipe so that soil cannot enter the grouting pipe, thereby avoiding the slurry discharge hole of the grouting pipe being completely wrapped by concrete, so that subsequent grouting is in an unobstructed state, and the construction quality is improved.

[0004] The technical solution of the present invention is: comprising a grouting pipe support structure, a side grouting pipe arranged inside the grouting pipe support structure, a pile bottom grouting pipe and a pile bottom structure assembly arranged at the bottom end of the grouting pipe support structure.

[0005] The pile bottom structure assembly comprises a pile bottom upper structure connected to the side grouting pipe and the pile bottom grouting pipe, and a pile bottom lower structure connected to the pile bottom upper structure; a grouting pipe connected to the side grouting pipe is arranged in the pile bottom upper structure, and a grouting direction of the side grouting pipe is perpendicular to the surface of the grouting pipe;

[0006] The outer surface of the grouting pipe support structure is provided with a circumferentially symmetrical outgoing slurry pipe, and the bottom pipe body of the outgoing slurry pipe is connected to the bottom slurry outlet of the side grouting pipe;

[0007] The side of the side grouting pipe with the side grouting hole is provided with a protrusion away from the upper structure of the pile bottom, and a protrusion is formed on the outer side of the side grouting pipe;

[0008] A bottom grout outlet corresponding to the pile bottom grouting pipe is provided at the bottom of the pile bottom structure component, and a sealing plate is spot-welded at the bottom grout outlet.

[0009] Furthermore, the diameter of the grouting pipe support structure is larger than the diameters of the side grouting pipe and the pile bottom grouting pipe.

[0010] Furthermore, the pile bottom upper structure also includes a first baffle plate arranged between the side grouting pipe and the side grouting pipe.

[0011] Furthermore, the pile bottom upper structure also includes a partition plate arranged between each side slurry outlet pipe.

[0012] Furthermore, the number of the side slurry outlet pipes is at least 3.

[0013] Furthermore, the pile bottom lower structure also includes: a second baffle plate connected to the side slurry outlet pipe, a first pile tip plate and a second pile tip plate, and the first pile tip plate and the second pile tip plate are perpendicular to the second baffle plate.

[0014] Furthermore, the first pile tip plate and the second pile tip plate are arranged perpendicular to each other.

[0015] A grouting pipe construction method comprises the following steps:

[0016] S1: Fix the side grouting pipe and the pile bottom grouting pipe to the grouting pipe support structure in the grouting pipe construction device;

[0017] S2: making an outgoing grouting pipe and opening a side outlet hole at a predetermined position of the outgoing grouting pipe;

[0018] S3: Making pile bottom structure components, and spot welding a plugging plate at the corresponding pile bottom grouting hole to cover the grouting hole and to be pushed open by the grouting pressure;

[0019] S4: connecting the bottom grouting hole of the side grouting pipe with the pipe body of the external grouting pipe;

[0020] S5: transporting the grouting pipe support structure to a preset pile position, and vertically driving the grouting pipe support structure fixed with the grouting pipe into the preset depth of the pile position in the downward direction of the pile bottom structure;

[0021] S6: Connect the side grouting pipe and the pile bottom grouting pipe to the pressure pump respectively; inject the prepared slurry into the grouting pipe until the grouting is completed.

[0022] Furthermore, the side grouting pipe is connected to the outgoing grouting pipe via a three-way pipe.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) Since the slurry discharge direction of the slurry discharge pipe is perpendicular to the surface of the grouting pipe, during the grouting pipe construction process, the slurry discharge pipe is usually driven into the ground perpendicularly. The slurry discharge direction of the slurry discharge pipe can be considered to be a horizontal direction parallel to the ground, and mud cannot enter the slurry discharge pipe, thereby preventing the grouting pipe from being blocked;

[0025] (2) By providing a convex-concave portion on the pipe body of the outgoing grouting pipe and providing the side grouting hole on the convex-concave portion, the grouting space of the side grouting hole can be increased, thereby reducing the situation where the pile foundation concrete wraps around the side grouting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the grouting pipe construction device in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the installation positions of the side grouting pipe and the outgoing grouting pipe in an embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the upper structure of the pile bottom in an embodiment of the present invention;

[0029] Figure 4 Schematic diagram of the lower structure of the pile bottom in an embodiment of the present invention;

[0030] Figure 5 Schematic diagram of the pile bottom grouting pipe structure in an embodiment of the present invention;

[0031] Figure 6 It is a schematic flow chart of the grouting construction method in an embodiment of the present invention.

[0032] In the figure: 1. Grouting pipe support structure; 2. Side grouting pipe; 3. Grouting pipe at pile bottom; 4. Pile bottom structural assembly; 41. Pile bottom upper structure; 42. Pile bottom lower structure; 5. Slurry outlet pipe; 6. Outgoing slurry pipe; 7. Protrusion; 8. Slurry outlet at pile bottom; 9. Sealing plate; 10. First baffle plate; 11. Partition plate; 12. Second baffle plate; 13. First pile tip plate; 14. Second pile tip plate; 15. Side slurry outlet hole. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below. The following embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0034] Example

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a grouting pipe device is provided, comprising a grouting pipe support structure 1, a side grouting pipe 2 arranged inside the grouting pipe support structure 1, a pile bottom grouting pipe 3 and a pile bottom structure component 4 arranged at the bottom end of the grouting pipe support structure 1, the grouting pipe support structure 1 is used to fix the side grouting pipe 2 and the pile bottom grouting pipe 3, and the side grouting pipe 2 and the pile bottom grouting pipe 3 are fixed inside the grouting pipe support structure 1;

[0036] The pile bottom structure assembly 4 includes a pile bottom upper structure 41 connected to the side grouting pipe 2 and the pile bottom grouting pipe 3 and a pile bottom lower structure 42 connected to the pile bottom upper structure 41; a grouting pipe 5 connected to the side grouting pipe 2 is provided in the pile bottom upper structure 41, and the grouting direction of the side grouting pipe 2 is perpendicular to the surface of the grouting pipe; the diameter of the grouting pipe support structure 1 is larger than the diameters of the side grouting pipe 2 and the pile bottom grouting pipe 3; specifically, the side grouting pipe 2 and the pile bottom grouting pipe 3 can be PHC pipes, and the PHC pipe pile is a hollow cylindrical concrete prefabricated component. Correspondingly, the diameter of the grouting pipe support structure 1 can be determined according to the pipe diameter and wall thickness of the PHC pipe pile. In addition, the number of openings of the grouting pipe support structure 1 is determined according to the diameters of the side grouting pipe 2 and the pile bottom grouting pipe 3, and the opening diameter is generally 2 to 3 cm larger than the grouting pipe diameter.

[0037] The pile bottom upper structure 41 further includes a first baffle plate 10 disposed between the side grouting pipe 2 and the grout outlet pipe 5 , and the first baffle plate 10 can thus play the role of connecting, fixing, supporting and isolating.

[0038] The pile bottom upper structure 41 further includes a partition plate 11 disposed between each side grouting pipe 2. The partition plate 11 is used to separate the grouting spaces corresponding to each side grouting pipe 2, thereby preventing slurry blockage during the grouting process.

[0039] like Figure 3 As shown, the number of the side pulp pipes 2 is at least 3. When the number of the side pulp pipes 2 is 3, the angle between adjacent side pulp pipes is 120°, and when the number is 4, the angle between adjacent side pulp pipes is 90°, that is, the side pulp pipes 2 are evenly distributed.

[0040] like Figure 4 As shown, the first pile tip plate 13 and the second pile tip plate 14 are arranged perpendicular to each other. The pile tip lower structure 42 includes: a second baffle plate 12 connected to the side grouting pipe 2, a first pile tip plate 13 and a second pile tip plate 14, and the first pile tip plate 13 and the second pile tip plate 14 are perpendicular to the second baffle plate 12. The first pile tip plate 13 and the second pile tip plate 14 are perpendicular to the horizontal plane, so as to help better drive the grouting pipe into the ground.

[0041] The first pile tip plate 13 and the second pile tip plate 14 are provided with cut corners, wherein the shape of the cut corners can be to cut off a triangle from the top of the pile tip plate, or to trim the top part into a circle, so as to help better drive the grouting pipe into the ground.

[0042] The outer surface of the grouting pipe support structure 1 is provided with circumferentially symmetrical outgoing slurry pipes 6, wherein the outgoing slurry pipes 6 are evenly spaced on the outside of the grouting pipe support structure 1 along the extension direction of the grouting pipe support structure 1. Due to the requirement of pile length, the number of the outgoing slurry pipes 6 in this embodiment is an even number. Such a setting can make the grouting more evenly distributed on the outside of the grouting pipe support structure 1, which can not only ensure the construction quality, but also save working time.

[0043] The bottom pipe body of the outgoing grouting pipe 6 is connected to the grouting outlet 5 at the bottom of the side grouting pipe 2; the side grouting pipe 2 has a protrusion 7 on the side away from the pile bottom upper structure 42, and a protrusion is formed on the outside of the side grouting pipe 2; the side grouting pipe 2 is connected to the outgoing grouting pipe 6 through a tee pipe. In addition to facilitating the transportation of slurry by the pile side grouting pipe, the tee pipe can also enhance the connection strength between the side grouting pipe and the outgoing grouting pipe 6. In addition, in order to increase the grouting range of the side grouting hole 15 and reduce the situation where the grouting outlet of the side grouting hole 15 is wrapped by concrete, the side grouting hole in this embodiment is set on the side of the protrusion.

[0044] It should be noted that there are at least three protrusions 7, so that the protrusions 7 can be evenly distributed, and the connection between the side grouting pipe 2 and the outgoing slurry pipe 6 is located between adjacent protrusions 7, so that the cement slurry coming out of the side grouting pipe 2 can evenly enter the outgoing slurry pipe 6. It should be noted that the outgoing slurry pipe 6 in this embodiment can be made of stainless steel or a harder plastic.

[0045] The bottom 4 of the pile bottom structural component is provided with a pile bottom slurry outlet 8 corresponding to the pile bottom grouting pipe 3, wherein the bottom opening of the pile bottom grouting pipe 3 is arranged in an outwardly flared trumpet shape. The trumpet-shaped opening of the pile bottom grouting pipe 3 can increase the range of the pile bottom grouting pipe 3 to discharge the slurry and improve the construction efficiency. At the same time, since the space is increased, it is not conducive to the concrete of the pile foundation to wrap the bottom of the pile bottom grouting pipe 3, thereby ensuring the smooth grouting. At the same time, a sealing plate 9 is spot-welded at the pile bottom slurry outlet 8. The sealing plate 9 is used to cover the slurry outlet and can be pushed open by the grouting pressure.

[0046] like Figure 6 As shown, a grouting pipe construction method comprises the following steps:

[0047] S1: Fix the side grouting pipe 2 and the pile bottom grouting pipe 3 to the grouting pipe support structure 1 in the grouting pipe construction device;

[0048] S2; making an outgoing slurry pipe 6, and opening a side slurry outlet hole 15 at a predetermined position of the outgoing grouting pipe 6;

[0049] S3: Make a pile bottom structure assembly 4, and spot weld a plugging plate 9 at the corresponding pile bottom slurry outlet 8 to cover the pile bottom slurry outlet 8 and to be pushed open by the grouting pressure;

[0050] S4: connecting the bottom slurry outlet hole of the side grouting pipe 2 with the pipe body of the outgoing slurry pipe 6;

[0051] S5: transport the grouting pipe support structure 1 to the preset pile position, and vertically drive the grouting pipe support structure 1 fixed thereto into the preset depth of the pile position in the downward direction of the pile bottom structure;

[0052] S6: Connect the side grouting pipe 2 and the pile bottom grouting pipe 3 to the pressure pump respectively; inject the prepared slurry into the grouting pipe until the grouting is completed.

[0053] Working principle: fix the side grouting pipe 2 and the pile bottom grouting pipe 3 to the grouting pipe support structure 1 in the grouting pipe construction device; make an outgoing grouting pipe 6, and open a side grouting hole 15 at a predetermined position of the outgoing grouting pipe 6; make a pile bottom structure component 4, and spot weld a sealing plate 9 that is used to cover the grouting hole 8 at the corresponding pile bottom grouting port 8 and can be pushed open by the grouting pressure; connect the bottom grouting hole of the side grouting pipe 2 with the pipe body of the outgoing grouting pipe 6; because the grouting direction of the outgoing grouting pipe 6 is perpendicular to the surface of the grouting pipe, during the grouting pipe construction process, the grouting pipe is usually Drive it vertically to the ground. The grouting direction of the grouting pipe can be considered to be horizontally parallel to the ground. The soil cannot enter the grouting pipe, thereby preventing the grouting pipe from being blocked. The grouting pipe support structure 1 is transported to the preset pile position. According to the downward direction of the pile bottom structure, the grouting pipe support structure 1 with the grouting pipe fixed thereon is vertically driven into the preset depth of the pile position. By setting convex and concave parts on the pipe body of the external grouting pipe 6 and setting the side grouting hole 15 on the concave and convex parts, the grouting space of the side grouting hole 15 can be increased, thereby reducing the situation where the pile foundation concrete wraps the side grouting hole. The side grouting pipe 2 and the pile bottom grouting pipe 3 are connected to the pressure pump respectively; the configured slurry is injected into the grouting pipe until the grouting is completed.

[0054] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in the field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A grouting pipe device, comprising a grouting pipe support structure, a side grouting pipe arranged inside the grouting pipe support structure, a pile bottom grouting pipe and a pile bottom structure assembly arranged at the bottom end of the grouting pipe support structure, characterized in that: The pile bottom structure assembly comprises a pile bottom upper structure connected to the side grouting pipe and the pile bottom grouting pipe, and a pile bottom lower structure connected to the pile bottom upper structure; a grouting pipe connected to the side grouting pipe is arranged in the pile bottom upper structure, and a grouting direction of the side grouting pipe is perpendicular to the surface of the grouting pipe; The outer surface of the grouting pipe support structure is provided with a circumferentially symmetrical outgoing slurry pipe, and the bottom pipe body of the outgoing slurry pipe is connected to the bottom slurry outlet of the side grouting pipe; The side of the side grouting pipe with the side grouting hole is provided with a protrusion away from the upper structure of the pile bottom, and a protrusion is formed on the outer side of the side grouting pipe; A bottom grout outlet corresponding to the pile bottom grouting pipe is provided at the bottom of the pile bottom structure component, and a sealing plate is spot-welded at the bottom grout outlet.

2. The grouting pipe device according to claim 1, characterized in that: The diameter of the grouting pipe support structure is larger than the diameters of the side grouting pipe and the pile bottom grouting pipe.

3. The grouting pipe device according to claim 1, characterized in that: The pile bottom upper structure also includes a first baffle plate arranged between the side grouting pipe and the side grout outlet pipe.

4. The grouting pipe device according to claim 1, characterized in that: The pile bottom upper structure also includes a partition plate arranged between each side slurry outlet pipe.

5. The grouting pipe device according to claim 1, characterized in that: The number of the side slurry outlet pipes is at least 3.

6. The grouting pipe device according to claim 1, characterized in that: The pile bottom lower structure further includes: a second baffle plate connected to the side slurry outlet pipe, a first pile tip plate and a second pile tip plate, wherein the first pile tip plate and the second pile tip plate are perpendicular to the second baffle plate.

7. The grouting pipe device according to claim 6, characterized in that: The first pile tip plate and the second pile tip plate are arranged perpendicular to each other.

8. A grouting pipe construction method, characterized in that: The following steps are included: S1: Fix the side grouting pipe and the pile bottom grouting pipe to the grouting pipe support structure in the grouting pipe construction device; S2: making an outgoing grouting pipe and opening a side outlet hole at a predetermined position of the outgoing grouting pipe; S3: Making pile bottom structure components, and spot welding a plugging plate at the corresponding pile bottom grouting hole to cover the grouting hole and to be pushed open by the grouting pressure; S4: connecting the bottom grouting hole of the side grouting pipe with the pipe body of the external grouting pipe; S5: transporting the grouting pipe support structure to a preset pile position, and vertically driving the grouting pipe support structure fixed with the grouting pipe into the preset depth of the pile position in the downward direction of the pile bottom structure; S6: Connect the side grouting pipe and the pile bottom grouting pipe to the pressure pump respectively; inject the prepared slurry into the grouting pipe until the grouting is completed.

9. The grouting pipe construction method according to claim 8, characterized in that: The side grouting pipe is connected to the outgoing grouting pipe through a three-way pipe.

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