Reinforcing structure of rotary digging hole-forming cast-in-place pile

Abstract

The utility model belongs to the field of foundation pile construction, and particularly relates to a reinforcing structure of a rotary drilling cast-in-place pile. Comprising a drill hole perpendicular to the construction ground and a reinforcement cage arranged in the drill hole, and further comprises supporting components arranged on the outer side face of the reinforcement cage at intervals, and the supporting components can abut against the hole wall of the drill hole to support the reinforcement cage. The supporting component can abut against the hole wall of the drill hole to support the reinforcement cage, the position of the reinforcement cage is fixed, the pouring quality of concrete can be controlled easily, the standardization of the shape of a pile body is guaranteed, and the overall structural strength of the foundation pile is guaranteed.

Description

Technical Field

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

[0002] Rotary bored pile is a commonly used pile foundation construction method. It mainly uses a rotary drilling rig to drill holes, then places a steel cage in the hole, and finally extends a guide tube into the hole to cast concrete to form a pile body. However, when pouring concrete, the guide tube may collide with the steel cage during the pouring process, causing the steel cage to be eccentric, resulting in a decrease in the overall structural strength of the foundation pile, which brings hidden dangers. Utility Model Content

[0003] The purpose of the utility model is to provide a rotary bored cast-in-place pile reinforcement structure to solve the above-mentioned technical problems, which can avoid eccentricity of the steel cage and ensure the overall structural strength of the foundation pile.

[0004] In view of this, the utility model provides a rotary bored cast-in-place pile reinforcement structure, including a borehole perpendicular to the construction ground, and a steel cage arranged in the borehole, and also includes support components arranged at intervals on the outer side of the steel cage, and the support components can support the steel cage against the borehole wall.

[0005] In this technical solution, the steel cage is arranged in a drilled hole perpendicular to the ground. The steel cage and the drilled hole are arranged coaxially to ensure the quality and effect of concrete pouring. Support components are fixedly arranged on the outer surface of the steel cage. The support components can support the steel cage against the wall of the drilled hole. The conduit responsible for drilling deep into the hole and used for pouring concrete may collide with the steel cage during the pouring process and other reasons may cause the steel cage to be eccentric, resulting in a decrease in the overall structural strength of the foundation pile. Fixing the position of the steel cage helps to control the quality of concrete pouring, ensure the standardization of the pile body shape, and ensure the overall structural strength of the foundation pile.

[0006] In the above technical solution, further, the supporting component is an airbag, and the airbags are arranged equidistantly along the length direction of the steel cage. Several of the airbags are connected by air pipes, and the air pipes are connected to an external air source.

[0007] In the present technical solution, the supporting component is an airbag, which is fixedly connected to the outer surface of the steel cage. During the installation of the steel cage, the airbag is not in an inflated state, which facilitates the steel cage to be inserted into the drilled hole to complete the installation. The air intake source is an air pump, which passes through an air pipe, which is a hose. The air intake fills the inside of the airbag, causing the airbag to expand and fully adhere to the inner wall of the drilled hole, and provide support for the steel cage, effectively preventing the steel cage from being eccentric.

[0008] In the above technical solution, further, the airbag material is polyurea or polyurethane.

[0009] In this technical solution, the airbag will be subjected to friction during the expansion process and when it contacts the inner wall of the borehole. The material needs to have high wear resistance to avoid damage due to friction. Concrete has a certain corrosiveness, especially in an alkaline environment. The airbag material needs to be able to resist the erosion of chemicals in the concrete. Polyurea and polyurethane both have the above-mentioned required properties. It is also possible to consider using reinforced synthetic rubber or multi-layer composite materials to improve the overall durability and damage resistance of the airbag.

[0010] In the above technical solution, further, the airbag is annular, the inner surface of the airbag is fixedly connected to a fixing plate, and the fixing plate is fixedly connected to the steel cage at a side away from the airbag.

[0011] In the present technical solution, the fixing plate is an annular plate, the inner wall of the fixing plate is welded to the steel cage, and the outer wall is fixedly connected to the airbag. The steel cage is a grid structure, and loose fixation to the airbag will cause displacement of the airbag, affecting the support of the airbag to the steel cage. The annular fixing plate is connected to the outer wall of the steel cage to increase the contact area, and the pressure on the fixing plate is converted into support for the steel cage. At the same time, the expansion direction of the airbag can be blocked to prevent the airbag from expanding into the steel cage.

[0012] In the above technical solution, further, an arc-shaped blocking piece is provided on the circumference of one side of the airbag away from the fixing plate.

[0013] In the technical solution, a plurality of arc-shaped baffles are circumferentially arranged on the side of the airbag away from the fixed plate. After the airbag expands, the arc-shaped baffles can be driven until they abut against the inner wall of the drill hole, thereby further protecting the airbag.

[0014] In the above technical solution, further, after the airbag is inflated, a flow groove is provided for passage.

[0015] In this technical solution, flow grooves are equidistantly arranged on the annular airbag. After the steel cage is set, the conduit is extended inward and concrete is poured. The setting of the flow grooves on the airbag can not only ensure the rapid pouring of concrete, but also ensure the support of the steel cage while reducing the volume occupied by the airbag.

[0016] In the above technical solution, further, it also includes a mounting base plate horizontally arranged on the construction ground, the mounting base plate is provided with a through opening aligned with the drilled hole, and the mounting base plate is symmetrically provided with a limit assembly.

[0017] In the above technical solution, further, the limiting assembly includes a first plate and a second plate fixedly connected to the mounting seat plate, the first plate and the second plate are arranged in parallel, and a screw is rotatably connected between the first plate and the second plate, the screw is threadedly connected to an "L"-shaped support plate, and the support plate is fixedly connected to a positioning plate at one end away from the screw.

[0018] In this technical solution, the screw is rotated to drive the support plate threadedly connected to the screw to slide on the screw, driving the positioning plate close to or away from the center line of the drill hole, which can help the steel cage and the conduit for conveying concrete to perform positioning work.

[0019] In the above technical solution, further, a connecting plate is provided on the inner wall of the mounting seat plate, and the connecting plate is threadedly connected with a sleeve.

[0020] In this technical solution, it is convenient to install the sleeve simultaneously when installing the installation base plate. At the same time, during the construction process, the stability of the sleeve is guaranteed. After the pouring of concrete is completed, the threaded connection between the installation base plate and the sleeve is contacted, and the installation base plate and the sleeve can be separated. The sleeve is rolled from a steel plate. The sleeve helps to fix the position of the pile hole, ensure the accuracy and stability during the drilling process, and in the pile hole containing mud, the sleeve can help maintain a higher water pressure, which is beneficial to the stability of the pile hole and the pouring of concrete.

[0021] In the above technical solution, further, an extension plate is formed by extending from the side of the mounting seat plate, and the extension plate is threadedly connected with a pin.

[0022] In this technical solution, the mounting base plate is fixed to the construction ground by the cooperation of the pins and the extension plates.

[0023] The beneficial effects of the utility model are:

[0024] 1. The supporting components can support the steel cage against the wall of the drilled hole. Fixing the position of the steel cage helps to control the pouring quality of concrete, ensure the standardization of the pile shape, and ensure the overall structural strength of the foundation pile;

[0025] 2. The supporting component is an air bag, which is fixedly connected to the outer surface of the steel cage. During the installation of the steel cage, the air bag is not in an inflated state, which facilitates the steel cage to be inserted into the drilled hole to complete the installation. The air intake source is an air pump, which passes through an air pipe, which is a hose, and the air intake fills the inside of the air bag, so that the air bag expands and fully contacts the inner wall of the drilled hole, and supports the steel cage, effectively preventing the steel cage from being eccentric;

[0026] 3. The limit assembly includes a first plate and a second plate fixedly connected to the mounting base plate, the first plate and the second plate are arranged in parallel, and a screw is rotatably connected between the first plate and the second plate, the screw is threadedly connected to an "L"-shaped support plate, and a positioning plate is fixedly connected to the end of the support plate away from the screw. Rotating the screw drives the support plate threadedly connected to the screw to slide on the screw, driving the positioning plate close to or away from the center line of the drilling hole, which can help the steel cage and the conduit for conveying concrete to perform positioning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of the utility model;

[0028] Figure 2 A schematic diagram of the structure of the supporting component;

[0029] Figure 3 It is a structural schematic diagram of the installation seat plate, the limit assembly and the sleeve.

[0030] The symbols in the figure are:

[0031] 1. Drilling hole; 2. Construction ground; 3. Steel cage; 4. Support component; 5. Air inlet source; 6. Air pipe; 7. Fixing plate; 8. Arc baffle; 9. Air bag; 10. Flow groove; 11. Mounting plate; 12. Through port; 13. Limiting assembly; 14. First plate; 15. Second plate; 16. Screw; 17. Support plate; 18. Positioning plate; 19. Connecting plate; 20. Sleeve; 21. Extension plate; 22. Pin. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0033] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0035] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0036] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0037] Embodiment 1:

[0038] like Figure 1-3As shown, this embodiment provides a reinforcement structure of a rotary bored cast-in-place pile, comprising a borehole 1 perpendicular to the construction ground 2, and a steel cage 3 arranged in the borehole 1, and also comprising support components 4 arranged at intervals on the outer side of the steel cage 3, and the support components 4 can support the steel cage 3 against the wall of the borehole 1. The steel cage 3 is arranged in the borehole 1 perpendicular to the ground, and the steel cage 3 and the borehole 1 are arranged coaxially to ensure the quality and effect of concrete pouring. The support component 4 is fixedly arranged on the outer surface of the steel cage 3, and the support component 4 can support the steel cage 3 against the wall of the borehole 1. The conduit responsible for penetrating the borehole 1 and used for pouring concrete may collide with the steel cage 3 during the pouring process and other reasons may cause the steel cage 3 to be eccentric, resulting in a decrease in the overall structural strength of the foundation pile. The position of the fixed steel cage 3 is helpful to control the pouring quality of concrete, ensure the standardization of the pile body shape, and ensure the overall structural strength of the foundation pile.

[0039] The supporting component 4 is an airbag 9, which is equidistantly arranged along the length direction of the steel cage 3. Several of the airbags 9 are connected through an air pipe 6, and the air pipe 6 is connected to an external air source 5. The supporting component 4 is an airbag 9, and the airbag 9 is fixedly connected to the outer surface of the steel cage 3. During the installation of the steel cage 3, the airbag 9 is not in an inflated state, which facilitates the steel cage 3 to be inserted into the borehole 1 to complete the installation. The air source 5 is an air pump, which fills the inside of the airbag 9 through the air pipe 6, which is a hose, so that the airbag 9 expands and fully contacts the inner wall of the borehole 1, and supports the steel cage 3, effectively preventing the steel cage 3 from being eccentric.

[0040] The material of the airbag 9 is polyurea or polyurethane. The airbag 9 will be subjected to friction during the expansion process and when it contacts the inner wall of the borehole 1. The material needs to have high wear resistance to avoid damage due to friction. Concrete has a certain degree of corrosiveness, especially in an alkaline environment. The material of the airbag 9 needs to be able to resist the erosion of chemicals in the concrete. Polyurea and polyurethane both have the above-mentioned required properties. It is also possible to consider using reinforced synthetic rubber or multi-layer composite materials to improve the overall durability and damage resistance of the airbag 9.

[0041] like Figure 1 and Figure 2 The airbag 9 is annular, and the inner surface of the airbag 9 is fixedly connected to the fixing plate 7, and the fixing plate 7 is fixedly connected to the steel cage 3 on the side away from the airbag 9. The fixing plate 7 is an annular plate, and the inner wall of the fixing plate 7 is welded to the steel cage 3, and the outer wall is fixedly connected to the airbag 9. The steel cage 3 is a grid structure, and the loose fixation of the airbag 9 will cause the displacement of the airbag 9, affecting the support of the airbag 9 to the steel cage 3. The annular fixing plate 7 is connected to the outer wall of the steel cage 3 to increase the contact area, and the pressure on the fixing plate 7 is converted into support for the steel cage 3. At the same time, the expansion direction of the airbag 9 can be blocked to prevent the airbag 9 from expanding into the steel cage 3.

[0042] The airbag 9 is provided with an arc-shaped baffle 8 on the circumference of one side away from the fixing plate 7. A plurality of arc-shaped baffles 8 are provided on the circumference of the airbag 9 away from the fixing plate 7. After the airbag 9 is expanded, the arc-shaped baffles 8 can be driven until they abut against the inner wall of the borehole 1, further protecting the airbag 9.

[0043] After the airbag 9 is inflated, there are flow grooves 10 for passage. The flow grooves 10 are equidistantly arranged on the annular airbag 9. After the steel cage 3 is arranged, the conduit is extended inward and concrete is poured. The arrangement of the flow grooves 10 on the airbag 9 can ensure the rapid pouring of concrete, and can also ensure the support of the steel cage 3 while reducing the volume occupied by the airbag 9.

[0044] Embodiment 2:

[0045] This embodiment provides a rotary bored cast-in-place pile reinforcement structure, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0046] like Figure 1 and Figure 3 As shown, it also includes a mounting base plate 11 horizontally arranged on the construction ground 2, the mounting base plate 11 is provided with a through opening 12 aligned with the borehole 1, and a limit assembly 13 is symmetrically arranged on the mounting base plate 11. The limit assembly 13 includes a first plate 14 and a second plate 15 fixedly connected to the mounting base plate 11, the first plate 14 and the second plate 15 are arranged in parallel, and a screw rod 16 is rotatably connected between the first plate 14 and the second plate 15, the screw rod 16 is threadedly connected with an "L"-shaped support plate 17, and a positioning plate 18 is fixedly connected to the end of the support plate 17 away from the screw rod 16. Rotating the screw rod 16 drives the support plate 17 threadedly connected to the screw rod 16 to slide on the screw rod 16, driving the positioning plate 18 close to or away from the center line of the borehole 1, which can help the steel cage 3 and the conduit for conveying concrete to perform positioning work.

[0047] The inner wall of the mounting base plate 11 is provided with a connecting plate 19, and the connecting plate 19 is threadedly connected with a sleeve 20. The sleeve 20 is conveniently set synchronously when the mounting base plate 11 is installed, and the stability of the sleeve 20 is ensured during the construction process. After the concrete pouring is completed, the threaded connection between the mounting base plate 11 and the sleeve 20 is contacted, and the mounting base plate 11 and the sleeve 20 can be separated. The sleeve 20 is made of a rolled steel plate, and the sleeve 20 helps to fix the position of the pile hole, ensure the accuracy and stability during the drilling process 1, and in the pile hole containing mud, the sleeve 20 can help maintain a higher water pressure, which is beneficial to the stability of the pile hole and the pouring of concrete.

[0048] The installation base plate 11 is provided with an extension plate 21 extending from the side thereof, and the extension plate 21 is threadedly connected with a pin 22. The installation base plate 11 is fixed to the construction ground 2 by the cooperation of the pin 22 and the extension plate 21.

[0049] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the inspiration of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A rotary bored cast-in-place pile reinforcement structure, comprising a borehole (1) perpendicular to a construction ground (2), and a steel cage (3) arranged in the borehole (1), characterized in that: It also comprises support components (4) arranged at intervals on the outer side of the steel cage (3), and the support components (4) can abut against the wall of the drill hole (1) to support the steel cage (3).

2. A rotary bored cast-in-place pile reinforcement structure according to claim 1, characterized in that: The supporting component (4) is an air bag (9), and the air bags (9) are arranged at equal distances along the length direction of the steel cage (3). A plurality of the air bags (9) are connected to each other through an air pipe (6), and the air pipe (6) is connected to an external air intake source (5).

3. A rotary bored cast-in-place pile reinforcement structure according to claim 2, characterized in that: The material of the airbag (9) is polyurea or polyurethane.

4. A rotary bored cast-in-place pile reinforcement structure according to claim 3, characterized in that: The airbag (9) is annular, and the inner surface of the airbag (9) is fixedly connected to the fixing plate (7), and the fixing plate (7) is fixedly connected to the steel cage (3) at a side away from the airbag (9).

5. A rotary bored cast-in-place pile reinforcement structure according to claim 4, characterized in that: An arc-shaped blocking piece (8) is arranged on the circumference of one side of the air bag (9) away from the fixing plate (7).

6. A rotary bored cast-in-place pile reinforcement structure according to claim 5, characterized in that: After the air bag (9) is inflated, a flow groove (10) is provided for passage.

7. The rotary bored cast-in-place pile reinforcement structure according to claim 1, characterized in that: It also comprises a mounting base plate (11) horizontally arranged on the construction ground (2), the mounting base plate (11) being provided with a through opening (12) aligned with the drill hole (1), and a limit position assembly (13) being symmetrically arranged on the mounting base plate (11).

8. The rotary bored cast-in-place pile reinforcement structure according to claim 7, characterized in that: The limiting assembly (13) comprises a first plate (14) and a second plate (15) fixedly connected to the mounting base plate (11); the first plate (14) and the second plate (15) are arranged in parallel, and a screw rod (16) is rotatably connected between the first plate (14) and the second plate (15); the screw rod (16) is threadedly connected to an "L"-shaped support plate (17); and a positioning plate (18) is fixedly connected to one end of the support plate (17) away from the screw rod (16).

9. A rotary bored cast-in-place pile reinforcement structure according to claim 8, characterized in that: The inner wall of the mounting seat plate (11) is provided with a connecting plate (19), and the connecting plate (19) is threadedly connected with a sleeve (20).

10. A rotary bored cast-in-place pile reinforcement structure according to claim 9, characterized in that: An extension plate (21) is formed by extending from the side of the mounting seat plate (11), and the extension plate (21) is threadedly connected with a pin (22).

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