Pile foundation hole digging pile pouring structure

Abstract

The utility model discloses a pile foundation hole digging pile pouring structure which is provided with a pile hole, and wall protecting concrete with the wall thickness ranging from 20 cm to 30 cm is poured at a well mouth of the pile hole. A reinforcement cage is placed in the pile hole, limiting ends are welded to the top of the reinforcement cage, a limiting plate corresponding to the reinforcement cage is arranged at the upper end of the dado concrete, and limiting holes corresponding to the limiting ends in number and position are formed in the limiting plate. The retaining wall concrete part is also called as a locking notch and can be used for preventing the well mouth from sinking, and the top surface of the locking notch needs to be flat and is 30 cm higher than the original ground. After the pile hole is formed, wall protection concrete is poured at the position of a well mouth, after the reinforcement cage is put into the pile hole, the limiting plate is placed on the wall protection concrete, the limiting end on the reinforcement cage just corresponds to the interior of the limiting hole in the limiting plate at the moment, and in other words, it can be guaranteed that the reinforcement cage does not incline after being put into the pile hole through limiting of the limiting plate after the reinforcement cage is put into the pile hole; the middle round hole of the limiting plate can be used for butt joint of the guide pipe and the concrete storage hopper.

Description

Technical Field

[0001] The utility model relates to the field of pile foundation construction, in particular to a pile foundation bored pile casting structure. Background Art

[0002] At present, pile foundations are involved in building construction. Bored piles refer to piles made by forming pile holes in the foundation soil by mechanical drilling, steel pipe squeezing or manual excavation at the construction site, placing steel cages in the pile holes, and pouring concrete. According to different hole-forming methods, cast-in-place piles can be divided into several categories, such as sinking pipe cast-in-place piles, bored piles and excavated cast-in-place piles. For pile foundation bored piles, the steel cage is lowered into the pile hole before pouring. After the steel cage is lowered into the pile hole, the steel cage is prone to tilt, that is, there is a lack of limit on the steel cage after it is lowered. In addition, when pouring through the conduit, the concrete storage hopper connected to the conduit above needs to be hoisted by the hoisting system, and the concrete storage hopper is prone to shaking and lacks support for the concrete storage hopper. Utility Model Content

[0003] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a pile foundation bored pile casting structure. After the pile hole is opened, the retaining wall concrete is poured at the wellhead. When the steel cage is lowered into the pile hole, the limit plate is placed on the retaining wall concrete. At this time, the limit end on the steel cage just corresponds to the limit hole on the limit plate, that is, the limit plate limits the steel cage after it is lowered, which can ensure that the steel cage will not be tilted after being lowered into the pile hole.

[0004] The utility model is implemented in this way, constructing a pile foundation bored pile casting structure, which is characterized by: having a pile hole, pouring a wall protection concrete with a wall thickness of 20cm to 30cm at the wellhead of the pile hole; placing a steel cage in the pile hole, welding a limited end on the top of the steel cage, providing a limit plate corresponding to the steel cage at the upper end of the wall protection concrete, and opening limit holes on the limit plate corresponding to the number and position of the limit end.

[0005] According to the pile foundation bored pile casting structure described in the utility model, it is characterized in that four steel bar earrings are symmetrically arranged at intervals of 2m around the steel bar cage, so that the steel bar cage does not lean against the hole wall after being lowered into the hole and has a sufficient protective layer.

[0006] According to the pile foundation bored pile casting structure of the utility model, the feature is that: at the same time, an acoustic detection tube is placed in the steel cage according to the design requirements.

[0007] According to the utility model, a bored pile casting structure for pile foundation is characterized in that a 25 cm diameter conduit is placed in the steel cage, the top of the conduit is connected to the concrete storage hopper, and a support for supporting the concrete storage hopper is arranged on the retaining wall concrete.

[0008] According to the utility model, a bored pile casting structure for pile foundation is characterized in that the support is in the shape of a hollow cone as a whole, the upper part of which is a circular support opening for supporting the concrete storage hopper, and the lower end is an expanded support end located on the retaining wall concrete.

[0009] According to the pile foundation bored pile casting structure of the utility model, the feature is that a construction site is cast around the wellhead of the pile hole with a thickness of 20cm to 30cm to facilitate the installation of the well frame and the leveling of the mucking road.

[0010] The utility model has the following advantages: the utility model provides a pile foundation bored pile casting structure, which has a pile hole, and a wall protection concrete with a wall thickness of 20cm to 30cm is poured at the wellhead of the pile hole; a steel cage is placed in the pile hole, a limit end is welded on the top of the steel cage, a limit plate corresponding to the steel cage is provided at the upper end of the wall protection concrete, and a limit hole corresponding to the number and position of the limit end is opened on the limit plate. The wall protection concrete part is also called a lock mouth, which can be used to prevent the wellhead from sinking. The top surface of the lock mouth should be flat and 30cm higher than the original ground. After the pile hole is opened, the wall protection concrete is poured at the wellhead, and when the steel cage is lowered into the pile hole, the limit plate is placed on the wall protection concrete. At this time, the limit end on the steel cage just corresponds to the limit hole on the limit plate, that is, the limit plate limits the steel cage after it is lowered, and at this time, it can be ensured that the steel cage will not be tilted after being lowered into the pile hole, and the central circular hole of the limit plate can be used for the docking of the conduit and the concrete storage hopper.

[0011] Second, in the pile foundation bored pile casting structure described in this application, four steel earrings are symmetrically arranged at intervals of 2m around the steel cage, so that the steel cage does not lean against the hole wall after being lowered into the hole and has a sufficient protective layer. At the same time, an acoustic detection pipe can be placed in the steel cage according to the design requirements.

[0012] Third, in the bored pile casting structure of the pile foundation described in the present application; a 25 cm diameter conduit is placed in the steel cage, the top of the conduit is connected to the concrete storage hopper, and a support for supporting the concrete storage hopper is provided on the retaining wall concrete. The support is in the shape of a hollow cone as a whole, the upper part of which is a circular support opening for supporting the concrete storage hopper, and the lower end is an expanded support end located on the retaining wall concrete. The concrete storage hopper can be placed on the support, and the support for the concrete storage hopper can prevent the concrete storage hopper from shaking.

[0013] Fourth, in this application, the limit plate and the support are placed on the concrete wall to facilitate their removal. A construction site is cast around the wellhead of the pile hole with a thickness of 20cm to 30cm to facilitate the installation of the well frame and the leveling of the mucking road. Drainage and protection facilities can be built on the surface of the pile area according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the overall implementation structure diagram of this application;

[0015] Figure 2 It is the steel cage construction diagram in this application;

[0016] Figure 3 It is a schematic diagram of the limiting plate in this application;

[0017] Figure 4 It is a schematic diagram of the limit plate and the steel cage in this application;

[0018] Figure 5 It is a schematic diagram of the support in this application.

[0019] Among them: pile hole 1, wall protection concrete 2, steel cage 3, limit end 4, limit plate 5, limit hole 6, steel earring 7, conduit 8, concrete storage hopper 9, support 10, circular support mouth 11, expanded support end 12, construction site 13, newly poured concrete 14, lifting system 15. DETAILED DESCRIPTION

[0020] The following will be combined with the attached Figure 1-Figure 5 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a pile foundation bored pile casting structure, such as Figure 1-Figure 5 As shown, it can be implemented in the following manner: a pile hole 1 is provided, and a wall protection concrete 2 with a wall thickness of 20 cm to 30 cm is poured at the wellhead of the pile hole 1; a steel cage 3 is placed in the pile hole 1, and a limit end 4 is welded on the top of the steel cage 3. A limit plate 5 corresponding to the steel cage 3 is provided on the upper end of the wall protection concrete 2, and a limit hole 6 corresponding to the number and position of the limit end 4 is opened on the limit plate 5. This part of the wall protection concrete 2 is also called a lock mouth, which can be used to prevent the wellhead from sinking. The top surface of the lock mouth should be flat and 30 cm higher than the original ground. After the pile hole 1 is opened, the retaining wall concrete 2 is poured at the wellhead. When the steel cage 3 is lowered into the pile hole 1, the limiting plate 5 is placed on the retaining wall concrete 2. At this time, the limiting end 4 on the steel cage 3 just corresponds to the limiting hole 6 on the limiting plate 5, that is, the limiting plate 5 limits the steel cage after it is lowered. At this time, it can be ensured that the steel cage will not be tilted after being lowered into the pile hole. The central circular hole of the limiting plate 5 can be used for the docking of the conduit 8 and the concrete storage hopper 9.

[0022] In the pile foundation bored pile casting structure described in the present application, four steel bar earrings 7 are symmetrically arranged at intervals of 2m around the steel cage 3, so that the steel cage does not lean against the hole wall after being lowered into the hole and has a sufficient protective layer. At the same time, an acoustic detection pipe can be placed in the steel cage 3 according to the design requirements.

[0023] In the pile foundation bored pile casting structure described in the present application, a 25 cm diameter conduit 8 is placed in the steel cage 3, the top of the conduit 8 is connected to the concrete storage hopper 9, and a support 10 for supporting the concrete storage hopper 9 is provided on the wall concrete 2. Figure 5 As shown, the support 10 is in the shape of a hollow cone, the upper part of which is a circular support opening 11 for supporting the concrete storage hopper 9, and the lower end is an expanded support end 12 located on the wall concrete 2. Figure 1 As shown, the concrete storage hopper can be placed on the support 10, and the support of the concrete storage hopper can prevent the concrete storage hopper from shaking.

[0024] In the present application, the limiting plate 5 and the support 10 are both placed on the retaining wall concrete 2 to facilitate their removal.

[0025] In the bored pile casting structure of the pile foundation described in the present application, a construction site 13 is cast around the wellhead of the pile hole 1 with a thickness of 20cm to 30cm to facilitate the installation of the derrick and the leveling of the mucking road. Drainage and protection facilities can be built on the surface of the pile area as needed.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pile foundation bored pile casting structure, characterized in that; having a pile hole (1), Concrete (2) with a wall thickness of 20 cm to 30 cm is poured at the wellhead of the pile hole (1); A steel cage (3) is placed in the pile hole (1), a limit end (4) is welded to the top of the steel cage (3), a limit plate (5) corresponding to the steel cage (3) is provided at the upper end of the retaining wall concrete (2), and the limit plate (5) is provided with limit holes (6) corresponding in number and position to the limit end (4).

2. A pile foundation bored pile casting structure according to claim 1, characterized in that; Four steel bar earrings (7) are symmetrically arranged at intervals of 2 m around the steel bar cage (3) so that the steel bar cage does not lean against the hole wall after being lowered into the hole and has a sufficient protective layer.

3. A pile foundation bored pile casting structure according to claim 1, characterized in that; At the same time, an acoustic detection pipe is placed in the steel cage (3) according to the design requirements.

4. A pile foundation bored pile casting structure according to claim 1, characterized in that; A 25 cm diameter conduit (8) is placed in the steel cage (3), the top of the conduit (8) is connected to a concrete storage hopper (9), and a support (10) for supporting the concrete storage hopper (9) is provided on the wall protection concrete (2).

5. The pile foundation bored pile casting structure according to claim 1, characterized in that; The support (10) is in the shape of a hollow cone as a whole, with an upper portion being a circular support opening (11) for supporting the concrete storage hopper (9), and a lower end being an expanded support end (12) located on the retaining wall concrete (2).

6. A pile foundation bored pile casting structure according to claim 1, characterized in that; A construction site (13) is cast around the wellhead of the pile hole (1) with a thickness of 20 cm to 30 cm.

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