Cast-in-situ bored pile construction structure

Abstract

The utility model belongs to the technical field of pile foundation construction equipment, and discloses a cast-in-situ bored pile construction structure which comprises an embedded barrel, an operation pipe, an air compressor, a first pump machine and a second pump machine. A plurality of grouting channels and a plurality of grouting openings are formed in the barrel wall of the pre-buried barrel; the operation pipe can be arranged in the pre-buried barrel in a penetrating mode in the length direction of the pre-buried barrel and is buried to the pile forming position; the output end of the air compressor is communicated with the operation pipe; the output end of the first pump machine communicates with the grouting channel. The output end of the second pump machine communicates with the operation pipe. An air compressor is utilized to inject air flow into foundation soil from an operation pipe, so that the foundation soil is locally loosened, then a second pump machine is utilized to inject arm protection slurry into a pile forming position through the operation pipe, after the arm protection slurry is solidified, a first pump machine is utilized to inject lubricating slurry into a slurry injection channel, and finally the pre-embedded barrel is lifted up by a certain distance. And then wall protection slurry is injected through the second pump machine in sequence, construction waste residues in the pre-buried barrel can be brought out of the ground surface by the pre-buried barrel, and slag removal operation is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction equipment, in particular to a bored cast-in-place pile construction structure. Background Art

[0002] A cast-in-place pile is a pile that is made by forming a pile hole in the foundation soil at the construction site through mechanical drilling, steel pipe squeezing or manual excavation, and then placing a steel cage inside and pouring concrete. Depending on the hole-forming method, cast-in-place piles can be divided into several categories, such as sunken pipe cast-in-place piles, bored cast-in-place piles and excavated cast-in-place piles.

[0003] The bored piles in the prior art will generate a large amount of drilling debris during the construction process. If the debris is not removed in time, the drilling speed will be seriously affected. In addition, the discharged drilling debris will mix with the mud, affecting the strength and setting time of the mud after solidification, thus affecting the construction period. Utility Model Content

[0004] The utility model aims to provide a bored cast-in-place pile construction structure, which can complete the construction without slag removal operation.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Bored pile construction structure, including:

[0007] The pre-buried barrel can be buried in the foundation soil along its length direction. One end of the pre-buried barrel buried in the foundation soil can be buried to a predetermined pile-forming position. A grouting channel penetrating in the vertical direction is provided on the barrel wall of the pre-buried barrel. A plurality of grouting channels are arranged at intervals along the circumference of the pre-buried barrel. A plurality of grouting ports are provided on the outer wall of the pre-buried barrel, and each of the grouting ports is connected to one of the grouting channels.

[0008] An operating pipe, when the pre-buried barrel is buried at the pile-forming position, the operating pipe can be passed through the pre-buried barrel along the length direction of the pre-buried barrel and buried to the pile-forming position;

[0009] an air compressor configured to produce an air flow, wherein an output end of the air compressor is connected to the working pipe;

[0010] A first pump is configured to inject lubricating slurry into the grouting channel, and an output end of the first pump is connected to the grouting channel;

[0011] The second pump is configured to inject the guard arm mud into the working pipe, and the output end of the second pump is connected to the working pipe.

[0012] Preferably, a winch is further included, wherein the output end of the winch is connected to an end of the pre-buried barrel away from the pile forming position, and the winch can pull the pre-buried barrel out of the foundation soil.

[0013] Preferably, a plurality of grouting ports are provided on the same grouting channel at intervals along the vertical direction.

[0014] Preferably, the system further comprises a first slurry storage tank, wherein the first slurry storage tank is configured to store the lubricating slurry, and the first slurry storage tank is connected to an input end of the first pump.

[0015] Preferably, it further comprises a second slurry storage tank, wherein the second slurry storage tank is configured to store the guard arm mud, and the second slurry storage tank is connected to the input end of the second pump.

[0016] Preferably, a three-way valve is provided at one end of the working pipe away from the pile forming position, and the three-way valve is respectively connected to the air compressor and the second pump. The three-way valve can cut off its connection with the air compressor and its connection with the second pump.

[0017] Preferably, the viscosity of the lubricating mud is 25s.

[0018] Preferably, the viscosity of the guard arm mud ranges from 30s to 40s.

[0019] Preferably, it further comprises a control unit, which is communicatively connected to the air compressor, the first pump and the second pump respectively, and the control unit can turn on and off the air compressor, the first pump and the second pump respectively.

[0020] Beneficial effects of the utility model:

[0021] The pre-buried barrel is buried in the foundation soil to be constructed, and then the working pipe is buried in the foundation soil along the length direction of the pre-buried barrel. The pre-buried barrel and the working pipe are buried to the expected pile-forming position. The air compressor is used to inject air from the working pipe into the foundation soil to loosen the foundation soil locally. The second pump is then used to inject the arm guard mud into the pile-forming position through the working pipe. After the arm guard mud solidifies, the first pump is used to inject lubricating mud into the grouting channel to reduce the friction between the pre-buried barrel and the foundation soil. Finally, the pre-buried barrel is lifted for a distance, and the second pump is used to inject the wall protection mud in turn. The construction waste slag in the pre-buried barrel can be brought out of the ground by the pre-buried barrel, and there is no need for slag cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the bored cast-in-place pile construction structure of the utility model;

[0023] Figure 2It is a structural schematic diagram of the bored cast-in-place pile construction structure of the utility model with some structures omitted;

[0024] Figure 3 It is a top view of the embedded bucket according to an embodiment of the utility model.

[0025] In the figure:

[0026] 100. Foundation soil;

[0027] 1. Pre-buried bucket; 11. Grouting port;

[0028] 2. Operation pipe; 21. Three-way valve;

[0029] 3. Air compressor;

[0030] 4. The first pump;

[0031] 5. Second pump;

[0032] 6. Winch;

[0033] 7. The first slurry storage tank;

[0034] 8. The second slurry storage tank;

[0035] 9. Control unit. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0040] like Figure 1-Figure 3 As shown, the utility model provides a bored cast-in-place pile construction structure for cast-in-place pile construction.

[0041] The bored pile construction structure comprises a pre-buried barrel 1, an operating pipe 2, an air compressor 3, a first pump 4 and a second pump 5. Among them, the embedded barrel 1 can be buried in the foundation soil 100 along its own length direction, and one end of the embedded barrel 1 buried in the foundation soil 100 can be buried to a predetermined pile-forming position. A grouting channel that runs through in the vertical direction is opened on the barrel wall of the embedded barrel 1. A plurality of grouting channels are arranged at intervals along the circumference of the embedded barrel 1. A plurality of grouting ports 11 are opened on the outer wall of the embedded barrel 1, and each grouting port 11 is connected to a grouting channel; when the embedded barrel 1 is buried in the pile-forming position, the working pipe 2 can be passed through the embedded barrel 1 along the length direction of the embedded barrel 1 and buried to the pile-forming position; the air compressor 3 is configured to produce airflow, and the output end of the air compressor 3 is connected to the working pipe 2; the first pump 4 is configured to inject lubricating mud into the grouting channel, and the output end of the first pump 4 is connected to the grouting channel; the second pump 5 is configured to inject arm slurry into the working pipe 2, and the output end of the second pump 5 is connected to the working pipe 2.

[0042] The embedded barrel 1 is buried in the foundation soil 100 to be constructed, and then the working pipe 2 is buried in the foundation soil 100 along the length direction of the embedded barrel 1. The embedded barrel 1 and the working pipe 2 are both buried to the expected pile-forming position. The air compressor 3 is used to inject airflow from the working pipe 2 into the foundation soil 100 to loosen the foundation soil 100 locally. The second pump 5 is then used to inject the arm guard mud into the pile-forming position through the working pipe 2. After the arm guard mud solidifies, the first pump 4 is used to inject lubricating mud into the grouting channel to reduce the friction between the embedded barrel 1 and the foundation soil 100. Finally, the embedded barrel 1 is lifted for a distance, and then the second pump 5 is used to inject the wall protection mud in turn. The construction waste residue in the embedded barrel 1 can be brought out of the ground by the embedded barrel 1, and there is no need for slag removal.

[0043] Specifically, the bored pile construction structure further includes a winch 6, the output end of the winch 6 is connected to one end of the embedded bucket 1 away from the pile forming position, and the winch 6 can pull the embedded bucket 1 out of the foundation soil 100. The above arrangement facilitates controlling the embedding depth of the embedded bucket 1 in the foundation soil 100. In the embodiment, other existing construction hoisting equipment can also be used instead of the winch 6, which is not limited here.

[0044] Specifically, a plurality of grouting ports 11 are spaced apart in the vertical direction on the same grouting channel. The above arrangement enables the lubricating mud to fully cover the surface of the embedded bucket 1, thereby reducing the friction between the outer wall of the embedded bucket 1 and the foundation soil 100.

[0045] In this embodiment, seven grouting channels are arranged at intervals along the circumference of the embedded barrel 1, and each grouting channel corresponds to five grouting ports.

[0046] In other embodiments, the volume of the embedded barrel 1 can be determined according to actual operation requirements, and then the number of grouting channels and grouting ports 11 can be determined according to the volume of the embedded barrel 1, which is not limited here.

[0047] Specifically, the bored pile construction structure further includes a first slurry storage tank 7, which is configured to store lubricating slurry, and the first slurry storage tank 7 is connected to the input end of the first pump 4. With the arrangement of the first slurry storage tank 7, one first slurry storage tank 7 can be used for multiple bored pile construction structures to operate simultaneously, which is convenient for collaborative operation at the construction site.

[0048] Specifically, the bored pile construction structure further includes a second slurry storage tank 8, which is configured to store arm slurry, and the second slurry storage tank 8 is connected to the input end of the second pump 5. The second slurry storage tank 8 is provided so that a plurality of bored pile construction structures can be operated simultaneously, which is convenient for collaborative operation at the construction site.

[0049] Specifically, a three-way valve 21 is provided at one end of the working pipe 2 away from the pile forming position. The three-way valve 21 is connected to the air compressor 3 and the second pump 5 respectively. The three-way valve 21 can cut off the connection between itself and the air compressor 3, and the connection between itself and the second pump 5, to prevent the arm mud from entering the air compressor 3 and damaging the equipment. The above-mentioned three-way valve 21 is provided so that the second pump 5 and the air compressor 3 can be connected to the working pipe 2 at the same time, and no manual switching is required during operation.

[0050] In this embodiment, the viscosity of the lubricating mud is 25s to ensure that the lubricating mud has good fluidity and can fully play a lubricating role.

[0051] In this embodiment, the viscosity of the arm mud ranges from 30s to 40s.

[0052] Specifically, it also includes a control unit 9, which is communicatively connected to the air compressor 3, the first pump 4, and the second pump 5, respectively, and the control unit 9 can respectively turn on and off the air compressor 3, the first pump 4, and the second pump 5. The setting of the above control unit 9 enables construction personnel to remotely control the air compressor 3, the first pump 4, and the second pump 5 through the control unit 9 to cooperate with each other, and can also realize automatic operation by writing programs.

[0053] In this embodiment, the control unit 9 is a STM32 controller commonly used in the art.

[0054] In this embodiment, the control unit 9 can also control the three-way valve 21, so that the construction personnel can remotely cut off the connection between the three-way valve 21 and the air compressor 3 and the connection between the three-way valve 21 and the second pump 5 through the control unit 9, and can also realize automated operation by writing a program, and the control unit 9 can also open and close the winch 6, and control its lifting distance in the vertical direction.

[0055] In other embodiments, the control unit 9 may not be provided, and manual operation may be adopted to control the air compressor 3, the first pump 4, the second pump 5, the three-way valve 21 and the winch 6 to cooperate with each other, thereby lowering the production cost.

[0056] The operation process of the bored pile construction structure described in the utility model is as follows:

[0057] The pre-buried barrel 1 is buried in the foundation soil 100 to be constructed, and then the working pipe 2 is buried in the foundation soil 100 along the length direction of the pre-buried barrel 1. The pre-buried barrel 1 and the working pipe 2 are buried to the expected pile formation position.

[0058] The air compressor 3 is used to inject airflow from the working pipe 2 into the foundation soil 100 to loosen the foundation soil 100 locally, and then the second pump 5 is used to inject the arm slurry into the pile forming position through the working pipe 2.

[0059] After the arm guard mud solidifies, the first pump 4 is used to inject lubricating mud into the grouting channel to reduce the friction between the embedded bucket 1 and the foundation soil 100. Finally, the winch 6 is used to lift the embedded bucket 1 for a distance, and then the second pump 5 is used to inject wall protection mud in turn. The construction waste in the embedded bucket 1 can be brought out of the ground by the embedded bucket 1.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Bored pile construction structure, characterized in that: include: The embedded barrel (1) can be buried in the foundation soil (100) along its length direction. One end of the embedded barrel (1) buried in the foundation soil (100) can be buried to a predetermined pile formation position. A grouting channel penetrating in the vertical direction is provided on the barrel wall of the embedded barrel (1). A plurality of grouting channels are arranged at intervals along the circumference of the embedded barrel (1). A plurality of grouting ports (11) are provided on the outer wall of the embedded barrel (1), and each of the grouting ports (11) is connected to one of the grouting channels. An operating pipe (2), when the pre-buried bucket (1) is buried at the pile-forming position, the operating pipe (2) can be passed through the pre-buried bucket (1) along the length direction of the pre-buried bucket (1) and buried to a depth of the pile-forming position; An air compressor (3) is configured to produce an air flow, wherein an output end of the air compressor (3) is connected to the working pipe (2); a first pump (4) configured to inject lubricating slurry into the grouting channel, wherein an output end of the first pump (4) is connected to the grouting channel; The second pump (5) is configured to inject the arm slurry into the working pipe (2), and the output end of the second pump (5) is connected to the working pipe (2).

2. The bored pile construction structure according to claim 1, characterized in that: It also comprises a winch (6), the output end of the winch (6) being connected to an end of the pre-buried bucket (1) away from the pile forming position, and the winch (6) being capable of pulling the pre-buried bucket (1) out of the foundation soil (100).

3. The bored pile construction structure according to claim 1, characterized in that: A plurality of grouting ports (11) are arranged on the same grouting channel at intervals along the vertical direction.

4. The bored pile construction structure according to claim 1, characterized in that: It also includes a first slurry storage tank (7), which is configured to store the lubricating slurry, and the first slurry storage tank (7) is connected to the input end of the first pump (4).

5. The bored pile construction structure according to claim 1, characterized in that: It also includes a second slurry storage tank (8), which is configured to store the guard arm mud, and the second slurry storage tank (8) is connected to the input end of the second pump (5).

6. The bored pile construction structure according to claim 1, characterized in that: A three-way valve (21) is provided at one end of the working pipe (2) away from the pile forming position. The three-way valve (21) is connected to the air compressor (3) and the second pump (5) respectively. The three-way valve (21) can cut off the connection between itself and the air compressor (3) and the connection between itself and the second pump (5).

7. The bored pile construction structure according to claim 1, characterized in that: The viscosity of the lubricating mud is 25s.

8. The bored pile construction structure according to claim 1, characterized in that: The viscosity of the arm mud ranges from 30s to 40s.

9. The bored pile construction structure according to any one of claims 1 to 8, characterized in that: The invention also comprises a control unit (9), wherein the control unit (9) is communicatively connected to the air compressor (3), the first pump (4), and the second pump (5), respectively, and the control unit (9) is capable of turning on and off the air compressor (3), the first pump (4), and the second pump (5), respectively.

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