Cast-in-place structure of cast-in-place concrete pile

Abstract

The utility model discloses a pouring structure of a cast-in-place concrete pile, which comprises a guide pipe and a grouting block, and the guide pipe is used for pouring concrete; the grouting block is arranged in the guide pipe and can move in the length direction of the guide pipe; the hopper structure comprises a hopper body and a hopper plug, the hopper body is installed at the top end of the guide pipe, a feeding port and a discharging port are formed in the hopper body, the discharging port is communicated with the guide pipe, and the hopper plug is movably installed in the hopper body and used for opening or closing the discharging port; the sealing structure is installed on the hopper plug, and the sealing structure is configured to be capable of abutting against the inner wall of the hopper body when the hopper plug closes the discharging opening; by means of the grouting block, concrete is separated from water or slurry in the guide pipe, the grouting block is pushed by the concrete to slowly move downwards, the problems that the concrete is prone to being mixed with the water or the slurry, and discharging is not thorough are solved, meanwhile, the sealing performance is guaranteed through the sealing structure, and the overall quality of the cast-in-place concrete pile is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cast-in-place pile construction technology, especially to a pouring structure of concrete cast-in-place pile. BACKGROUND

[0002] As an indispensable basic construction technology in modern civil engineering, the concrete cast-in-place pile is widely used in construction engineering such as bridges, high-rise buildings and underground facilities. According to the different hole-forming methods, the concrete cast-in-place pile can be divided into bored cast-in-place pile, driven cast-in-place pile, hand-dug cast-in-place pile and explosive expansion cast-in-place pile. According to whether the pile hole drilling bit is in the construction of the water-bearing layer of the foundation soil, the bored cast-in-place pile can be divided into mud wall forming, dry operation forming and casing wall forming. In the process of mud wall forming, in order to maintain the stability of the hole wall and prevent collapse, mud is usually used to protect the wall to prevent groundwater from seeping in and the soil body of the hole wall from being unstable, and at the same time, it can also carry the drilling slurry to the ground for easy cleaning, which has the advantages of convenient operation, high work efficiency, environmental protection, no noise and vibration influence and the like.

[0003] At present, the construction process of the mud wall forming cast-in-place pile mainly includes mud wall forming, guide pipe installation and concrete pouring. In the process of concrete pouring, the concrete is usually put into the guide pipe by a hopper, and then the concrete is poured from the bottom of the pile hole upward to fill the pile hole under the action of the guide pipe, while the water or mud in the pile hole is discharged to form a concrete cast-in-place pile. However, when the traditional mud wall forming cast-in-place pile pours concrete into the guide pipe, the initial poured concrete is easily mixed with the pre-existing water or mud in the guide pipe, which not only leads to the decrease of the purity and proportioning accuracy of the concrete, but also reduces the quality of the concrete, affects the overall quality of the concrete, and further increases the unqualified rate of the concrete cast-in-place pile. More seriously, the water or mud in the guide pipe is difficult to be completely discharged, which further aggravates the instability of the quality of the concrete. In addition, the traditional concrete hopper also has the problem of poor sealing of the discharge port, which makes the hopper prone to slurry leakage during pouring, not only affecting the proportioning accuracy of the concrete, but also increasing the material waste and cost during construction. The leakage problem may also lead to uneven quality or insufficient strength inside the cast-in-place pile, thereby posing a potential threat to its bearing capacity and stability. SUMMARY

[0004] The utility model aims at providing a pouring structure of concrete cast-in-place pile to solve the problems of low purity and proportioning accuracy of concrete, difficult discharge of water or mud in the guide pipe and poor sealing of the discharge port of the hopper in the process of pouring the concrete cast-in-place pile in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A pouring structure of a concrete bored pile, comprising:

[0007] A conduit for pouring concrete and a grouting block arranged in the conduit, the grouting block being configured to be movable along the length direction of the conduit;

[0008] A hopper structure comprising a hopper body and a hopper plug, the hopper body being mounted at the top end of the conduit, the hopper body being formed with an inlet and an outlet, the outlet being in communication with the conduit, the hopper plug being movably mounted in the hopper body for opening or closing the outlet;

[0009] A sealing structure mounted on the hopper plug, the sealing structure being configured to abut against the inner wall of the hopper body when the hopper plug closes the outlet.

[0010] According to the above technical means, after the pile hole construction is completed, the conduit is mounted in the pile hole, and the grouting block is configured to float on the water or slurry surface; by arranging the movable grouting block in the conduit, the initial poured concrete can be separated from the pre-existing water or slurry in the conduit, and as the hopper body continues to pour and the concrete flows downward under gravity, the concrete pushes the grouting block to slowly move downward to extrude the pre-existing water or slurry in the conduit to be completely discharged from the bottom of the conduit, solving the problem that in the traditional pouring process, the concrete is easily mixed with the pre-existing water or slurry in the conduit, resulting in a decrease in the purity and proportioning accuracy of the concrete, thereby ensuring the quality of the concrete and increasing the qualified rate of the concrete bored pile; at the same time, the concrete slowly flows downward under the buoyancy of the grouting block, ensuring the continuity and uniformity of the concrete during the pouring process to avoid air holes, thereby preventing the formation of cavities or defects in the bored pile, affecting the quality of the bored pile, and the water or slurry in the conduit can be completely discharged under the extrusion of the grouting block, improving the construction efficiency and the overall quality of the bored pile; in addition, the hopper plug and the sealing structure are mounted at the outlet of the hopper body, making the pouring process of the concrete more flexible and controllable, and the outlet can be opened or closed at any time according to actual needs, avoiding waste of concrete and unnecessary interruption of construction, and at the same time, the sealing structure ensures that when the hopper plug closes the outlet, it can effectively prevent concrete leakage, avoiding the mixing of concrete with water or slurry inside the conduit, thereby ensuring the purity and proportioning accuracy of the concrete and improving the overall quality and stability of the concrete bored pile.

[0011] Further, the grouting block is in a spherical structure.

[0012] According to the above technical means, the spherical structure is used as the pressure grouting block, the pressure grouting block has smooth shape without edges and corners, the flow of the pressure grouting block in the pipe is improved, the contact area with water or slurry is reduced, the resistance is reduced, the efficiency of the concrete pushing the pressure grouting block to move downward is improved, the complete discharge of the water or slurry in the pipe is further ensured, and the purity and proportioning accuracy of the concrete are ensured.

[0013] Further, the pressure grouting block is a foam ball, and the foam ball is configured to float on the surface of the slurry.

[0014] According to the above technical means, the foam ball is used as the pressure grouting block, the foam ball can easily float on the surface of the water or slurry due to its light weight, the foam ball can effectively separate the concrete and the pre-existing water or slurry in the pipe during the concrete pouring process, prevent the mixture of the two, and slowly sink with the pouring of the concrete, ensure that the slurry is gradually and completely discharged from the pipe, and the efficiency and quality of the concrete pouring are further improved.

[0015] Further, the outer wall of the foam ball is wrapped with a rubber skin layer.

[0016] According to the above technical means, the rubber skin layer is wrapped on the outer wall of the foam ball, the rubber skin layer enhances the durability and wear resistance of the foam ball, so that the foam ball can better adapt to various conditions during the concrete pouring process, and the flexibility of the rubber skin layer helps the foam ball to move more smoothly in the pipe, so that the slurry is more effectively pushed out, the purity and proportioning accuracy of the concrete are ensured, and the overall quality of the concrete pouring pile is improved.

[0017] Further, the hopper plug comprises a cover plate and a conical block, the cover plate is used to open or close the discharge port, the sealing structure is installed on the cover plate, and the conical block is installed on the lower end surface of the cover plate and used to guide the cover plate.

[0018] According to the above technical means, the cover plate is used to open or close the discharge port to control the pouring flow of the concrete, the conical block is installed on the lower end surface of the cover plate, which not only guides the cover plate to the discharge port to facilitate installation, but also enables the cover plate to open or close the discharge port more stably and accurately, and increases the weight of the cover plate to improve the installation efficiency and accuracy of the hopper plug, and the sealing structure is installed on the cover plate to effectively prevent the concrete from leaking when the cover plate closes the discharge port, improve the sealing between the cover plate and the hopper body, and ensure the overall quality and construction efficiency of the pouring pile.

[0019] Further, the cover plate is in a circular structure, an inclined surface is formed on the side wall of the circular structure, the inclined slope of the inclined surface is the same as the inclined slope of the inner wall of the hopper body, and the sealing structure is installed on the inclined surface.

[0020] According to the above technical means, the circular structure is used as the cover plate, and the side wall is designed as an inclined surface with the same inclination as the inner wall of the hopper body. This not only enhances the fit between the cover plate and the hopper body, but also helps to reduce friction and resistance when the cover plate moves, improves the sealing performance, and can more effectively prevent concrete from leaking out of the gap between the cover plate and the hopper body during pouring.

[0021] Further, the hopper plug further comprises a traction rope and a first lifting lug, the first lifting lug is installed on the upper end surface of the cover plate, one end of the traction rope is connected with the first lifting lug, and the other end extends out of the feeding port of the hopper body.

[0022] According to the above technical means, the traction rope is connected with the upper end surface of the cover plate through the first lifting lug. In use, the opening and closing of the cover plate can be controlled from the outside through the traction rope, greatly improving the convenience and flexibility of operation.

[0023] Further, the sealing structure is a rubber strip.

[0024] According to the above technical means, the rubber strip is used as the sealing structure. Due to its good elasticity and sealing performance, the rubber strip can be tightly fitted on the inner wall of the hopper body, effectively preventing concrete from leaking out of the gap between the cover plate and the hopper body during pouring, improving the sealing effect, enhancing the durability and service life of the hopper plug, and facilitating installation and replacement.

[0025] Further, the hopper structure further comprises a steel wire main rope and two steel wire auxiliary ropes, the steel wire main rope is connected with one end of the two steel wire auxiliary ropes through a connecting ring, and the feeding port of the hopper body is fixed with two symmetrically arranged second lifting lugs, and the other end of one of the two steel wire auxiliary ropes is connected with one of the two second lifting lugs.

[0026] According to the above technical means, the steel wire main rope is connected with one end of the two steel wire auxiliary ropes through the connecting ring, forming a stable suspension system, and then the two second lifting lugs are connected with the hopper body, so as to realize the stable suspension of the entire hopper structure. The structure is simple and convenient to operate, enhances the stability and safety of the hopper structure, makes it maintain balance and stability during pouring, is convenient to move and adjust, and improves the flexibility and efficiency of construction.

[0027] Further, the discharge port of the hopper body is fixed with a first reinforcing rib plate, the top end of the conduit is fixed with a second reinforcing rib plate, and the first reinforcing rib plate and the second reinforcing rib plate are connected by bolts.

[0028] According to the above technical means, the first reinforcing rib plate and the second reinforcing rib plate improve the load capacity and durability of the connection between the whole hopper body and the duct, and the first reinforcing rib plate and the second reinforcing rib plate are detachably connected through bolts, so that the connection strength and stability between the hopper body and the duct are enhanced, and it is ensured that the concrete can flow smoothly from the hopper body into the duct during the pouring process, and the disassembly and assembly are convenient.

[0029] The utility model realizes beneficial effect:

[0030] 1, the utility model discloses a movable pressure grouting block is set up in the duct, under the buoyancy of pressure grouting block, initial concrete of discharging can be separated with the water or slurry that exists in advance in the duct, along with hopper body continuous discharging and the gravity of concrete flowing down, concrete pushes down slowly under the pressure grouting block to extrude the water or slurry that exists in advance in the duct and discharges completely from the duct bottom, solve the problem that concrete is easy to mix with the water or slurry that exists in advance in the duct in traditional pouring process, cause the problem of concrete purity and proportioning accuracy's drop, thereby guarantee the concrete quality, increase the qualified rate of concrete bored pile.

[0031] 2, the utility model discloses concrete slowly flows down under the buoyancy of pressure grouting block, ensure that the continuity and uniformity of concrete in the pouring process can avoid appearing air hole, thereby prevent the formation of cavity or defect in the bored pile, influence the quality of bored pile, and the water or slurry in the duct can be discharged completely under the extrusion of pressure grouting block, improve construction efficiency and the overall quality of bored pile.

[0032] 3, the utility model discloses the installation of hopper plug and sealing structure at the discharge port of hopper body, make the pouring process of concrete more flexible controllable, can open or close the discharge port at any time according to actual needs, avoid the waste of concrete and unnecessary construction interruption, simultaneously, sealing structure ensures when hopper plug closes the discharge port, can effectively prevent concrete leakage, avoid the mixing of concrete and the water or slurry in the duct, thereby guarantee the purity and proportioning accuracy of concrete, improve the overall quality and stability of concrete bored pile. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the connection structure schematic drawing of the utility model pouring front duct, pressure grouting block and hopper structure;

[0034] Figure 2 It is the utility model Figure 1 The enlarged view of A;

[0035] Figure 3 It is the sectional view of pressure grouting block of the utility model;

[0036] Figure 4The utility model discloses a hopper plug and sealing structure's connection structure schematic drawing.

[0037] Figure 5 The utility model discloses a hopper plug and sealing structure's connection structure schematic drawing.

[0038] Among them, 10 - concrete;20 - mud;1 - guide pipe;11 - second reinforcing rib board;2 - pressure grouting block;21 - rubber skin layer;31 - hopper body;311 - feed inlet;312 - discharge port;313 - second lifting lug;314 - first reinforcing rib board;32 - hopper plug;321 - cover plate;322 - conical block;323 - tow rope;324 - first lifting lug;33 - steel wire main rope;34 - steel wire auxiliary rope;4 - sealing structure;5 - bolt.

[0039] The accompanying drawings are only used for illustrative description, and should not be understood as the limitation of the patent;In order to better illustrate the embodiment, some components of the drawing will be omitted, enlarged or reduced, and the size of actual product is not represented;For those skilled in the art, it is understandable that some well-known structures and their description in the drawing can be omitted;Same or similar signs correspond to same or similar components;The use of language in the drawing to describe the positional relationship is only used for illustrative description, and should not be understood as the limitation of the patent. DETAILED DESCRIPTION

[0040] It should be noted that the embodiments in the present application and the technical features in the embodiments can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as the explanation and description of the purpose of the present application, and should not be regarded as improper limitation of the present application.

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the specific technical scheme of the present application will be further described in combination with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0042] In the embodiments of the present application, the terms "first", "second" are only used for description purpose, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0043] In the embodiments of the present application, unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral;It can be directly connected, or indirectly connected through intermediate medium.

[0044] In the embodiments of the present application, the terms "comprising", "containing" or any other variant thereof are intended to encompass non-exclusive inclusions, such that processes, methods, articles, or apparatuses that comprise a list of elements are not limited to those elements, but can also include other elements not expressly listed, or also include elements inherent in such processes, methods, articles, or apparatuses. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0045] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the words "exemplary" or "for example" is intended to present concepts in a concrete manner.

[0046] The technical solutions of the present application will be described in detail below with reference to specific drawings.

[0047] The present embodiment relates to a pouring structure of a cast-in-place concrete pile, as shown in Figure 1 、 Figure 2 and Figure 5 , comprising: a conduit 1 for pouring concrete 10; a grouting block 2 arranged in the conduit 1, the grouting block 2 being configured to be movable along the length direction of the conduit 1; a hopper structure, the hopper structure comprising a hopper body 31 and a hopper plug 32, the hopper body 31 being installed at the top end of the conduit 1, the hopper body 31 being formed with an inlet 311 and an outlet 312, the outlet 312 being in communication with the conduit 1, the hopper plug 32 being movably installed in the hopper body 31 and being used to open or close the outlet 312; a sealing structure 4, the sealing structure 4 being installed on the hopper plug 32, the sealing structure 4 being configured to abut against the inner wall of the hopper body 31 when the hopper plug 32 closes the outlet 312.

[0048] In the present embodiment, after the pile hole construction is completed, the conduit 1 is installed in the pile hole, the grouting block 2 is placed in the conduit 1, and the pile hole and the conduit 1 are filled with water or slurry 20. Further, as a preferred embodiment, the grouting block 2 is in a spherical structure; further, the grouting block 2 is a foam ball; as shown in Figure 3 , further, the outer wall of the foam ball is wrapped with a rubber skin layer 21; in actual application of the present embodiment, the pile hole and the conduit 1 are filled with slurry 20, and the grouting block 2 floats on the surface of the slurry 20;

[0049] Specifically, in use, the hopper structure is installed at the top end of the conduit 1, so that the discharge port 312 is in communication with the conduit 1, in the initial state, the hopper plug 32 closes the discharge port 312 to prevent the concrete from flowing out in advance; after installation is completed, the concrete 10 is added to the hopper body 31 through the feeding port 311, as the concrete 10 is added, the volume in the hopper body 31 gradually increases, when the volume of the concrete 10 in the hopper body 31 reaches a predetermined value, the hopper plug 32 opens the discharge port 312, the concrete 10 flows downward along the length direction of the conduit 1 under the action of its own weight and fluidity, and pushes the grouting block 2 to slowly move downward together, while the buoyancy of the grouting block 2 and the elastic action of the rubber skin layer 21 enable it to smoothly move downward in the conduit 1 along with the flow of the concrete 10, so that the slurry 20 in the conduit 1 is completely discharged from the bottom of the conduit 1, thereby enabling the concrete 10 to fill the pile hole from bottom to top, so that the slurry 20 is gradually replaced out, thereby forming a cast-in-place pile; in this process, as the continuous pouring of the concrete 10, when the grouting block 2 is extruded from the bottom of the conduit 1 to the outside of the conduit 1, the grouting block 2 is not restricted by the conduit 1 and the pressure of the concrete 10, and floats upward under the action of its own buoyancy, at the moment when the grouting block 2 floats upward, the concrete 10 in the conduit 1 has a great impact force on the pile bottom, which breaks the sediment at the bottom of the pile hole and improves the contact quality between the concrete 10 and the rock surface of the pile bottom; finally, when the pouring of the concrete 10 is completed, the feeding is stopped, and after the concrete 10 is fully solidified and hardened, a concrete cast-in-place pile is formed; wherein the diameter of the grouting block 2 is 1-3 cm smaller than the inner diameter of the conduit 1, so as to avoid causing excessive resistance or jamming phenomenon, thereby ensuring the smoothness of the movement of the grouting block 2.

[0050] In the embodiment, the hopper plug 32 comprises a cover plate 321 and a tapered block 322, the cover plate 321 is used to open or close the discharge port 312, and the sealing structure 4 is installed on the cover plate 321, and the tapered block 322 is installed on the lower end surface of the cover plate 321 and is used to guide the cover plate 321.

[0051] As shown in Figure 2 and Figure 4 , in actual application, the cover plate 321 is used to open or close the discharge port to control the pouring flow of the concrete 10; the tapered block 322 is installed on the lower end surface of the cover plate 321, which not only can guide the cover plate 321 to the discharge port 312, facilitate installation, and enable the cover plate 321 to more smoothly and accurately open or close the discharge port, but also can increase the weight of the cover plate 321 to improve the installation efficiency and accuracy of the hopper plug 32; and the sealing structure 4 is installed on the cover plate 321, which ensures that the concrete 10 can be effectively prevented from leaking when the cover plate 321 closes the discharge port, improves the sealing between the cover plate 321 and the hopper body 31, and guarantees the overall quality and construction efficiency of the cast-in-place pile.

[0052] Further, as a preferred embodiment, the cover plate 321 is in a circular structure, an inclined surface is formed on the sidewall of the circular structure, the inclined slope of the inclined surface is the same as the inclined slope of the inner wall of the hopper body 31, and the sealing structure 4 is installed on the inclined surface; as shown in Figure 4 , the circular structure of the cover plate 321 has higher adhesion with the inner wall of the hopper body 31 through the inclined surface, and the sealing effect is better under the action of the sealing structure 4.

[0053] In this embodiment, the hopper plug 32 further comprises a traction rope 323 and a first lifting lug 324, the first lifting lug 324 is installed on the upper end surface of the cover plate 321, one end of the traction rope 323 is connected with the first lifting lug 324, and the other end extends out of the feeding port 311 of the hopper body 31.

[0054] As shown in Figure 4 , in actual application of this embodiment, after installation is completed, the other end of the traction rope 323 extends out of the feeding port 311 of the hopper body 31, when the volume of the concrete 10 in the hopper body 31 reaches a predetermined value, the operator pulls the other end of the traction rope 323, thereby pulling the cover plate 321 to open the discharge port 312, so that the concrete 10 flows downward along the length direction of the conduit 1 under the action of its own weight and fluidity, so as to gradually replace the mud 20, thereby forming a cast-in-place pile, which is simple in structure and convenient to operate.

[0055] Further, as a preferred embodiment, the sealing structure 4 is a rubber strip; in this embodiment, the rubber strip is used as the sealing structure 4, due to its good elasticity and sealing performance, the rubber strip can be closely attached to the inner wall of the hopper body 31, effectively preventing the concrete 10 from leaking from the gap between the cover plate 321 and the hopper body 31 during the pouring process, improving the sealing effect, enhancing the durability and service life of the hopper plug 32, and facilitating installation and replacement.

[0056] In this embodiment, the hopper structure further comprises a steel wire main rope 33 and two steel wire auxiliary ropes 34, the steel wire main rope 33 is connected with one end of the two steel wire auxiliary ropes 34 through a connecting ring, and the feeding port 311 of the hopper body 31 is fixed with two second lifting lugs 313 arranged symmetrically, and the other end of each steel wire auxiliary rope 34 is connected with one of the two second lifting lugs 313.

[0057] As shown in Figure 1 and Figure 5 , in actual application of this embodiment, the steel wire main rope 33 is connected with one end of the two steel wire auxiliary ropes 34 through the connecting ring, forming a stable suspension system, and then the two second lifting lugs 313 are connected with the hopper body 31, thereby realizing stable suspension of the entire hopper structure.

[0058] In this embodiment, a first reinforcing rib 314 is fixed to the discharge port 312 of the hopper body 31, and a second reinforcing rib 11 is fixed to the top end of the guide tube 1. The first reinforcing rib 314 and the second reinforcing rib 11 are connected by bolts 5.

[0059] like Figure 2 As shown, in this embodiment, during installation, the discharge port 312 is connected to the top of the guide tube 1, thereby enabling the first reinforcing rib 314 and the second reinforcing rib 11 to abut against each other, which improves the load-bearing capacity and durability of the connection between the entire hopper body 31 and the guide tube 1. Furthermore, the first reinforcing rib 314 and the second reinforcing rib 11 are connected by bolts 5, ensuring connection strength and stability, and facilitating disassembly and assembly.

[0060] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A structure for casting a cast-in-place concrete pile, characterized by comprising: include: A conduit (1) and a grouting block (2), wherein the conduit (1) is used for pouring concrete (10); the grouting block (2) is disposed inside the conduit (1) and is configured to be movable along the length of the conduit (1); The hopper structure includes a hopper body (31) and a hopper plug (32). The hopper body (31) is installed at the top of the guide tube (1). The hopper body (31) has an inlet (311) and an outlet (312). The outlet (312) is connected to the guide tube (1). The hopper plug (32) is movably installed inside the hopper body (31) for opening or closing the outlet (312). A sealing structure (4) is mounted on the hopper plug (32) and is configured to abut against the inner wall of the hopper body (31) when the hopper plug (32) closes the discharge port (312).

2. The filling structure of a cast-in-place concrete pile according to claim 1, characterized by, The grouting block (2) has a spherical structure.

3. A bored structure for a cast-in-place concrete pile according to claim 2, wherein The grouting block (2) is a foam ball, which is configured to float on the surface of the slurry (20).

4. A bored structure for a cast-in-place concrete pile according to claim 3, wherein The outer wall of the foam ball is covered with a rubber skin (21).

5. The structure of the cast-in-place pile according to claim 1, wherein The hopper plug (32) includes a cover plate (321) and a conical block (322). The cover plate (321) is used to open or close the discharge port (312). The sealing structure (4) is installed on the cover plate (321). The conical block (322) is installed on the lower end face of the cover plate (321) and is used to guide the cover plate (321).

6. A bored concrete pile according to claim 5, wherein, The cover plate (321) is a circular structure, and the side wall of the circular structure is formed as an inclined surface. The slope of the inclined surface is the same as the slope of the inner wall of the hopper body (31). The sealing structure (4) is installed on the inclined surface.

7. The structure of the cast-in-place pile according to claim 5, wherein The hopper plug (32) also includes a traction rope (323) and a first lifting lug (324). The first lifting lug (324) is installed on the upper surface of the cover plate (321). One end of the traction rope (323) is connected to the first lifting lug (324), and the other end extends out of the feed inlet (311) of the hopper body (31).

8. The cast structure of a cast-in-place concrete pile according to claim 1, wherein The sealing structure (4) is a rubber strip.

9. The cast structure of a cast-in-place concrete pile according to claim 1, wherein The hopper structure also includes a main wire rope (33) and two auxiliary wire ropes (34). The main wire rope (33) is connected to one end of the two auxiliary wire ropes (34) through a connecting ring. The feed inlet (311) of the hopper body (31) is fixed with two symmetrically arranged second lifting lugs (313). The two second lifting lugs (313) are respectively connected to the other end of one of the auxiliary wire ropes (34).

10. The cast structure of a cast-in-place concrete pile according to claim 1, wherein The discharge port (312) of the hopper body (31) is fixed with a first reinforcing rib (314), and the top end of the guide tube (1) is fixed with a second reinforcing rib (11). The first reinforcing rib (314) and the second reinforcing rib (11) are connected by bolts (5).

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