Reinforced concrete solid and hollow integrated pile

Abstract

The utility model relates to a reinforced concrete solid and hollow integrated pile which comprises a hollow pile body and inner reinforcement cages arranged at the two ends of the hollow pile body. The hollow pile body is of a hollow cuboid or cylinder structure and is a prefabricated part. The inner reinforcement cage is connected with an inner cavity of the hollow pile body in a clamped mode and comprises a supporting plate, reinforcing steel bars and stirrups, the reinforcing steel bars extend in the axial direction of the hollow pile body and are annularly distributed, the stirrups are spirally wound and welded to the outer sides of the reinforcing steel bars, one ends of the reinforcing steel bars are welded to the supporting plate, and the other ends of the reinforcing steel bars are connected with sleeves. The inner reinforcement cage is filled with concrete; the two ends of the hollow pile body are sealed to form a solid pile. The inner reinforcement cage is arranged in the hollow pile body, the supporting plate and the inner cavity of the hollow pile body form a barrier, and the concrete is injected into the inner reinforcement cage to form a solid structure with two sealed ends, so that the use amount of the concrete is reduced, water and corrosive substances can be prevented from entering the pile, and the service life of the pile is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to civil engineering technical field, especially relate to a reinforced concrete solid hollow integrated pile. BACKGROUND

[0002] The concrete centrifugal precast pile is a precast concrete pile made through a centrifugal process, has the advantages of high bearing capacity, convenient construction, short construction period, etc., and is suitable for foundation engineering under various geological conditions.

[0003] The concrete centrifugal precast pile is a hollow structure, and in foundation pit maintenance engineering and slope stability engineering, the concrete precast pile is mostly used. However, the following defects exist in the installation and use process of the concrete precast pile: 1. The hollow core of the pile body is easily affected by water and corrosive substances, which reduces the service life of the pile body, and appropriate protective measures need to be taken, thereby increasing the use cost; 2. If a solid pile is used, the durability and corrosion resistance are better, but the material usage is larger, and the hoisting and transportation costs are also increased, which is less economical than the hollow pile; the above technical problems need to be solved by the person skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] In view of the above deficiencies of the prior art, the utility model provides a reinforced concrete solid hollow integrated pile, which saves materials and increases the service life and bearing capacity of the pile body.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A reinforced concrete solid hollow integrated pile, comprising a hollow pile body and an inner steel reinforcement cage arranged in the hollow pile body at both ends;

[0007] The hollow pile body is a hollow cuboid or cylindrical structure and is a prefabricated part;

[0008] The inner steel reinforcement cage is clamped with the inner cavity of the hollow pile body and comprises a supporting plate, steel reinforcement and stirrups, wherein the steel reinforcement extends along the axis of the hollow pile body and is distributed in a ring shape, the stirrups are spirally wound and welded on the outside of the steel reinforcement, one end of the steel reinforcement is welded on the supporting plate, and the other end is connected with a sleeve, and the inner steel reinforcement cage is filled with concrete;

[0009] The hollow pile body is sealed at both ends to form a solid pile.

[0010] In a preferred embodiment of the utility model, the cross-sectional shape of the supporting plate is matched with the cross-sectional shape of the inner cavity of the hollow pile body, and the size of the supporting plate is smaller than the inner cavity of the hollow pile body by 15-20 mm.

[0011] In a preferred embodiment of the utility model, a water stop element is mounted on the outer edge of the supporting plate, and the water stop element is clamped with the supporting plate.

[0012] In a preferred embodiment of the present invention, an annular groove is provided at the bottom of the support plate, a clamping block is formed on the inner periphery of the water stop, the water stop is sleeved on the outer periphery of the support plate, and the clamping block is embedded in the annular groove.

[0013] In a preferred embodiment of the present invention, the sleeve is fixed in the hollow pile body, and the outer end surface of the sleeve is flush with the outer end surface of the hollow pile body.

[0014] In a preferred embodiment of the present invention, end plates are fixedly connected to both ends of the hollow pile body, and the end plates are flush with the outer end surface of the sleeve.

[0015] Beneficial effects: The utility model provides a reinforced concrete solid hollow integrated pile, which forms a solid structure with sealed ends, reduces the amount of concrete used, prevents water and corrosive substances from entering the interior of the pile, and improves the service life of the pile.

[0016] The utility model places an inner steel cage in the hollow pile body, forms a barrier with the supporting plate and the inner cavity of the hollow pile body, and injects concrete into the inner steel cage to seal both ends of the hollow pile body to form a solid pile structure, which significantly improves the overall bearing capacity and bending resistance of the pile;

[0017] The steel bars of the inner reinforcement cage of the utility model extend along the axial direction of the hollow pile body and are distributed in an annular shape, which helps to evenly distribute the force. The stirrups are spirally wound and welded to the outside of the steel bars to increase the stability and shear resistance of the overall structure of the inner reinforcement cage. The concrete is filled to improve the bearing capacity of the pile.

[0018] The design of the sleeve of the utility model facilitates the connection between multiple pile bodies. At the same time, the sleeve can be connected to the external tensioning plate, which makes it easy to install the inner steel cage in place and ensure the molding quality of the pile body after concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a reinforced concrete solid-hollow integrated pile provided by the utility model;

[0020] Figure 2 A cross-sectional view of a reinforced concrete solid-hollow integrated pile provided by the utility model;

[0021] Figure 3 This is a schematic structural diagram of the inner steel cage of the present invention;

[0022] Figure 4 This is the front view of the inner steel cage of the present invention;

[0023] Figure 5 For the utility model Figure 4A local enlarged view of point A;

[0024] Figure 6 This is a structural schematic diagram of a reinforced concrete solid hollow integrated pile (with end plates) provided by the utility model.

[0025] In the figure: 1 hollow pile;

[0026] 2 inner reinforcement cage, 21 support plate, 22 reinforcement, 23 stirrups;

[0027] 3 water stop parts;

[0028] 4 end plates;

[0029] 5 sleeves. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] like Figure 1-4 As shown, the utility model provides a reinforced concrete solid hollow integrated pile, comprising a hollow pile body 1 and an inner steel cage 2 built into both ends of the hollow pile body 1;

[0032] The hollow pile body 1 is a hollow rectangular parallelepiped or cylindrical structure and is a prefabricated part;

[0033] The inner steel cage 2 is clamped with the inner cavity of the hollow pile body 1 and includes a support plate 21, steel bars 22 and stirrups 23. The steel bars 22 extend axially along the hollow pile body 1 and are distributed in an annular shape. The stirrups 23 are spirally wound and welded to the outside of the steel bars 22. One end of the steel bar 22 is welded to the support plate 21, and the other end is connected to the sleeve 5. The interior of the inner steel cage 2 is filled with concrete.

[0034] Both ends of the hollow pile body 1 are sealed to form a solid pile.

[0035] The working principle and beneficial effects of the above embodiment are as follows:

[0036] The hollow pile body 1 is a precast concrete centrifugal pile. The hollow pile body 1 is placed at an angle, and a sleeve 5 is screwed to the end of the inner steel cage 2 away from the support plate 21. The inner steel cage 2 is placed in the hollow pile body 1 at one end, and the support plate 21 is used to form a barrier with the inner cavity of the hollow pile body 1. Concrete is injected into the inner steel cage 2 to seal both ends of the hollow pile body 1 to form a solid pile, which significantly improves the overall bearing capacity and bending resistance of the pile.

[0037] The steel bars 22 extend along the axial direction of the hollow pile body 1 and are distributed in a ring shape, which helps to evenly distribute the force. The stirrups 23 are spirally wrapped and welded to the outside of the steel bars 22 to increase the stability and shear resistance of the overall structure of the inner steel cage 2. The stirrups are filled with concrete to improve the bearing capacity of the pile.

[0038] The pile forms a solid structure with sealed ends, which reduces the amount of concrete used and can prevent water and soil from entering the interior of the pile, thereby protecting the pile from erosion and increasing the service life of the pile.

[0039] The design of the sleeve 5 facilitates the connection between multiple pile bodies. At the same time, the sleeve 5 can be connected to the external tensioning plate, which makes it easy to install the inner steel cage 2 in place, and forms a barrier with the inner cavity of the hollow pile body 1 through the support plate 21 to ensure that there will be no leakage during concrete pouring.

[0040] In one embodiment,

[0041] The cross-sectional shape of the support plate 21 is adapted to the cross-sectional shape of the inner cavity of the hollow pile body 1, and the inner steel cage 2 can be accurately placed inside the hollow pile body 1 to ensure the stability and installation position of the inner steel cage 2. The support plate 21 is 15-20 mm smaller than the inner cavity size of the hollow pile body 1, which is convenient for installation and avoids direct contact between the support plate 21 and the inner cavity of the hollow pile body 1, thereby reducing deformation of the hollow pile body 1 or the support plate 21 caused by excessive pressure during concrete pouring.

[0042] In one embodiment,

[0043] like Figure 5 As shown, a water stop 3 is installed on the outer edge of the support plate 21 to prevent the concrete slurry from leaking from the gap between the support plate 21 and the inner cavity of the hollow pile body 1 during construction (commonly known as leakage). The water stop 3 is clamped with the support plate 21 to ensure that it is tightly combined with the support plate 21, thereby improving the sealing and waterproof performance of the overall structure.

[0044] In one embodiment,

[0045] An annular groove is provided at the bottom of the support plate 21, and a blocking block is formed on the inner periphery of the water stop member 3. The water stop member 3 is sleeved on the outer periphery of the support plate 21, and the blocking block is embedded in the annular groove. The fixation and sealing between the water stop member 3 and the support plate 21 are achieved by the mutual engagement of the blocking block and the annular groove.

[0046] In one embodiment,

[0047] The sleeve 5 is fixed in the hollow pile body 1, and the outer end surface of the sleeve 5 is flush with the outer end surface of the hollow pile body 1, which helps to ensure the continuity and uniformity of multiple pile bodies.

[0048] In one embodiment,

[0049] like Figure 6 As shown, the two ends of the hollow pile body 1 are fixedly connected with end plates 4, and the end plates 4 are flush with the outer end surfaces of the sleeve 5. Two connection methods are adopted between the pile bodies to enhance the connection strength between the pile bodies. At the same time, the end plates 4 assist the sleeve 5 to provide additional bending support when the pile body is subjected to force, thereby reducing the bending stress at both ends of the pile body and improving the bending performance of the pile body.

[0050] In summary:

[0051] The utility model relates to a reinforced concrete solid-hollow integrated pile. An inner steel cage is placed in the hollow pile body. A support plate is used to form a barrier with the inner cavity of the hollow pile body. Concrete is injected into the inner steel cage to seal both ends of the hollow pile body to form a solid pile structure, which significantly improves the overall bearing capacity and bending resistance of the pile.

[0052] The steel bars of the inner reinforcement cage of the utility model extend along the axial direction of the hollow pile body and are distributed in an annular shape, which helps to evenly distribute the force. The stirrups are spirally wound and welded to the outside of the steel bars to increase the stability and shear resistance of the overall structure of the inner reinforcement cage. The concrete is filled to improve the bearing capacity of the pile.

[0053] The design of the sleeve of the utility model facilitates the connection between multiple pile bodies. At the same time, the sleeve can be connected to the external tensioning plate, which facilitates the installation of the inner steel cage in place and ensures the molding quality of the pile body after concrete pouring.

[0054] The utility model discloses a reinforced concrete solid hollow integrated pile, which forms a solid structure with sealed ends, reduces the amount of concrete used, prevents water and corrosive substances from entering the interior of the pile, and increases the service life of the pile.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. The terms "front", "back", "left" and "right" used in the text are not specific and are mainly used to more intuitively illustrate the technical solution and do not have a limiting effect. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reinforced concrete solid-hollow integrated pile, characterized by: It comprises a hollow pile body (1) and an inner steel cage (2) built into both ends of the hollow pile body (1); The hollow pile body (1) is a hollow rectangular parallelepiped or cylindrical structure and is a prefabricated part; The inner steel cage (2) is clamped with the inner cavity of the hollow pile body (1), and comprises a supporting plate (21), steel bars (22) and stirrups (23), wherein the steel bars (22) extend axially along the hollow pile body (1) and are distributed in an annular shape, and the stirrups (23) are spirally wound and welded to the outer side of the steel bars (22), one end of the steel bars (22) is welded to the supporting plate (21), and the other end is connected to a sleeve (5), and the interior of the inner steel cage (2) is filled with concrete; Both ends of the hollow pile body (1) are sealed to form a solid pile.

2. The reinforced concrete solid-hollow integrated pile according to claim 1, characterized in that: The cross-sectional shape of the supporting plate (21) is adapted to the cross-sectional shape of the inner cavity of the hollow pile body (1), and the supporting plate (21) is 15-20 mm smaller than the inner cavity size of the hollow pile body (1).

3. The reinforced concrete solid-hollow integrated pile according to claim 1, characterized in that: A water stop (3) is installed on the outer edge of the support plate (21), and the water stop (3) is clamped with the support plate (21).

4. The reinforced concrete solid-hollow integrated pile according to claim 3, characterized in that: An annular groove is provided at the bottom of the support plate (21), a clamping block is formed on the inner periphery of the water stop member (3), the water stop member (3) is sleeved on the outer periphery of the support plate (21), and the clamping block is embedded in the annular groove.

5. The reinforced concrete solid-hollow integrated pile according to claim 1, characterized in that: The sleeve (5) is fixed in the hollow pile body (1), and the outer end surface of the sleeve (5) is flush with the outer end surface of the hollow pile body (1).

6. The reinforced concrete solid-hollow integrated pile according to claim 1, characterized in that: End plates (4) are fixedly connected to both ends of the hollow pile body (1), and the end plates (4) are flush with the outer end surface of the sleeve (5).

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