Compression-resistant and pulling-resistant precast concrete square pile

Abstract

The utility model relates to the technical field of concrete square piles, and discloses an anti-compression and anti-pulling precast concrete square pile which comprises a concrete square pile body, a pile tip and an anti-pulling mechanism, the pile tip is fixedly arranged at the bottom end of the concrete square pile body, and the anti-pulling mechanism is fixedly arranged at the outer end of the concrete square pile body. An auxiliary mechanism is fixedly arranged at the inner end of the concrete square pile body; the anti-pulling mechanism comprises grooves, barb-shaped steel bars and anti-rust paint, the grooves are evenly formed in the outer end of the concrete square pile body, the barb-shaped steel bars are fixedly arranged on the side, close to the pile tip, of the outer end of the concrete square pile body, and the barb-shaped steel bars extend to the inner end of the concrete square pile body. According to the compression-resistant and pulling-resistant prefabricated concrete square pile, by arranging the pulling-resistant mechanism, the pulling-resistant performance of the concrete square pile is conveniently improved, the buoyancy of underground water is conveniently resisted, the anti-seismic effect is improved, normal use of a building is guaranteed, the use requirements of people are conveniently met, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete square pile technology, specifically to a precast concrete square pile that is resistant to compression and pull-out. Background Technology

[0002] With the development of building projects towards higher and heavier structures, precast concrete square piles are widely used in industrial and civil buildings, bridge foundations, and other fields due to their advantages such as high construction efficiency and stable bearing capacity. In actual engineering projects, pile foundations often need to withstand both vertical compressive and tensile loads simultaneously, thus requiring the use of precast concrete square piles that are resistant to both compression and tension.

[0003] The prior art patent document CN222500212U discloses a reinforced precast concrete square pile, including a square column body with grooves on both sides and a pile tip at the bottom. The surface of the pile tip is covered with a steel cladding. The inner cavity of the square column body is provided with several stirrups, and vertical steel bars are provided at the four corners of the inner cavity of the stirrups. A cross is provided inside the vertical steel bar. Protective steel bars are provided at the four corner edges of the inner cavity of the pile tip. Through the pile tip and the grooves, the contact area with the ground during pile driving is reduced, reducing resistance and improving pile driving efficiency. Furthermore, the arrangement of stirrups, vertical steel bars, crosses, steel cladding, and protective steel bars enhances the strength of the device, ensuring uniform internal stress during impact, thereby reducing impact and making the device less prone to cracking. Applying anti-rust paint can effectively prevent corrosion of the device, improving its practicality.

[0004] However, the concrete square piles in the existing patent document CN222500212U have poor pull-out resistance, are not easy to resist the buoyancy of groundwater, reduce the seismic effect, are not easy to meet people's use needs, and have low practicality. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this utility model is to provide a precast concrete square pile that is resistant to compression and pull-out, so as to solve the problem of poor pull-out performance of concrete square piles mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a precast concrete square pile with compressive and tensile strength, comprising a concrete square pile body, a pile tip, and a tensile strength mechanism. The bottom end of the concrete square pile body is fixedly provided with a pile tip, the outer end of the concrete square pile body is fixedly provided with a tensile strength mechanism, and the inner end of the concrete square pile body is fixedly provided with an auxiliary mechanism.

[0009] The pull-out resistance mechanism includes grooves, barbed steel bars, and anti-rust paint. Several grooves are evenly distributed on the outer end of the concrete square pile body. A barbed steel bar is fixedly installed on the outer end of the concrete square pile body near the pile tip. The barbed steel bar extends to the inner end of the concrete square pile body. Anti-rust paint is fixedly installed on the outer end of the barbed steel bar. The grooves can increase the contact area between the concrete square pile body and the soil or foundation, thereby improving friction and pull-out resistance. The barbed steel bar can significantly improve the pull-out resistance of the concrete square pile body. The anti-rust paint is applied to the surface of the barbed steel bar, extending the service life of the barbed steel bar.

[0010] Preferably, the auxiliary mechanism includes a concrete layer, longitudinal reinforcing bars, stirrups, a hollow cavity, foamed concrete, and a nano-silicon waterproof coating. The inner end of the concrete square pile body is fixedly provided with a concrete layer, which improves practicality.

[0011] Preferably, a number of longitudinal steel bars are uniformly fixed at the inner end of the concrete layer, and a number of stirrups are fixed at the outer end of the longitudinal steel bars, which helps to improve the stability and firmness of the concrete square pile.

[0012] Preferably, the stirrups are located at the inner end of the concrete layer, and the inner end of the concrete square pile body has a hollow cavity to facilitate the injection of foamed concrete.

[0013] Preferably, foamed concrete is fixedly provided at the inner end of the hollow cavity, and the foamed concrete is fixedly connected to the concrete layer. The foamed concrete and the concrete layer form a "strong on the outside and tough on the inside" composite structure, which improves the overall compressive stiffness of the concrete square pile body and reduces its self-weight.

[0014] Preferably, the outer end of the concrete square pile body is fixedly provided with a nano-silicon waterproof coating, which facilitates the improvement of the concrete square pile's weather resistance, aging resistance and hardness, and extends its compressive life.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This precast concrete square pile, which is resistant to compression and tension, improves the tension resistance of the concrete square pile by setting a tension-resistant mechanism, which helps to resist the buoyancy of groundwater, improves the seismic performance, ensures the normal use of the building, meets people's needs, and improves its practicality.

[0017] 2. This precast concrete square pile with compressive and tensile strength, through the setting of auxiliary mechanisms, forms a "strong on the outside and tough on the inside" composite structure with the foamed concrete in the hollow cavity and the concrete layer, which improves the overall compressive stiffness of the concrete square pile body, while reducing its self-weight. The nano-silicon waterproof coating helps to improve the weather resistance, aging resistance and hardness of the concrete square pile, and extends its compressive life. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the present invention.

[0020] Figure 3 This is a partial structural diagram of the pull-out resistance mechanism of this utility model;

[0021] Figure 4 This utility model Figure 2 Enlarged structural diagram of a local detail.

[0022] In the diagram: 1. Concrete square pile body; 2. Pile tip; 3. Pull-out mechanism; 301. Groove; 302. Barbed steel bar; 303. Anti-rust paint; 4. Auxiliary mechanism; 401. Concrete layer; 402. Longitudinal steel bar; 403. Stirrup; 404. Hollow cavity; 405. Foamed concrete; 406. Nano-silicon waterproof coating. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution: a precast concrete square pile with compressive and tensile strength, including a concrete square pile body 1, a pile tip 2 and a tensile strength mechanism 3. The pile tip 2 is fixedly provided at the bottom end of the concrete square pile body 1, the tensile strength mechanism 3 is fixedly provided at the outer end of the concrete square pile body 1, and the auxiliary mechanism 4 is fixedly provided at the inner end of the concrete square pile body 1.

[0025] The pull-out resistance mechanism 3 includes a groove 301, a barbed steel bar 302, and anti-rust paint 303. Several grooves 301 are evenly provided on the outer end of the concrete square pile body 1. A barbed steel bar 302 is fixedly provided on the outer end of the concrete square pile body 1 near the pile tip 2. The barbed steel bar 302 extends to the inner end of the concrete square pile body 1. Anti-rust paint 303 is fixedly provided on the outer end of the barbed steel bar 302. The groove 301 can increase the contact area between the concrete square pile body 1 and the soil or foundation, thereby improving the friction and pull-out resistance. The barbed steel bar 302 can significantly improve the pull-out resistance of the concrete square pile body 1. The anti-rust paint 303 is applied to the surface of the barbed steel bar 302 to extend the service life of the barbed steel bar 302.

[0026] Auxiliary mechanism 4 includes a concrete layer 401, longitudinal reinforcing bars 402, stirrups 403, a hollow cavity 404, foamed concrete 405, and a nano-silica waterproof coating 406. The inner end of the concrete square pile body 1 is fixedly provided with the concrete layer 401. Several longitudinal reinforcing bars 402 are uniformly fixedly provided at the inner end of the concrete layer 401. Several stirrups 403 are fixedly provided at the outer ends of the longitudinal reinforcing bars 402. The stirrups 403 are located at the inner end of the concrete layer 401. A hollow cavity 404 is formed at the inner end of the concrete square pile body 1. Foamed concrete 405 is fixedly installed at the inner end of the core cavity 404, and the foamed concrete 405 is fixedly connected to the concrete layer 401. A nano-silicon waterproof coating 406 is fixedly installed at the outer end of the concrete square pile body 1. The foamed concrete 405 in the hollow cavity 404 and the concrete layer 401 form a "strong outside and tough inside" composite structure, which improves the overall compressive stiffness of the concrete square pile body 1 while reducing its self-weight. The nano-silicon waterproof coating 406 improves the weather resistance, aging resistance and hardness of the concrete square pile body 1 and extends its compressive life.

[0027] Working principle: Firstly, when using precast concrete square piles with compressive and tensile strength, the main material of the concrete square pile body 1 is concrete. Concrete layer 401 encloses longitudinal reinforcing bars 402 and stirrups 403. The longitudinal reinforcing bars 402 are mainly responsible for bearing axial force, and the stirrups 403 bind the longitudinal reinforcing bars 402 together to form a reinforcing bar skeleton, ensuring the stability and integrity of the reinforcing bars. A hollow cavity 404 is left in the middle of the inner end of the concrete square pile body 1. The foamed concrete 405 in the hollow cavity 404 forms a "strong outside, tough inside" composite structure with the concrete layer 401, improving the overall strength of the concrete square pile body 1. While reducing self-weight, the concrete square pile body 1 is firmly inserted into the soil or foundation through the pile tip 2, ensuring stability and bearing capacity. The nano-silicon waterproof coating 406 improves the weather resistance, aging resistance and hardness of the concrete square pile body 1, and extends the compressive life. The groove 301 can increase the contact area between the concrete square pile body 1 and the soil or foundation, thereby improving friction and pull-out force. The barbed steel bar 302 can significantly improve the pull-out force of the concrete square pile body 1. The anti-rust paint 303 is applied to the surface of the barbed steel bar 302 to extend the service life of the barbed steel bar 302.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A precast concrete square pile with compressive and tensile strength, comprising a concrete square pile body (1), a pile tip (2), and a tensile strength mechanism (3), characterized in that: The bottom end of the concrete square pile body (1) is fixedly provided with a pile tip (2), the outer end of the concrete square pile body (1) is fixedly provided with an anti-pull-out mechanism (3), and the inner end of the concrete square pile body (1) is fixedly provided with an auxiliary mechanism (4). The pull-out mechanism (3) includes a groove (301), a barbed steel bar (302), and anti-rust paint (303). The outer end of the concrete square pile body (1) is evenly provided with a plurality of grooves (301). The outer end of the concrete square pile body (1) is fixedly provided with a barbed steel bar (302) on the side near the pile tip (2). The barbed steel bar (302) extends to the inner end of the concrete square pile body (1). The outer end of the barbed steel bar (302) is fixedly provided with anti-rust paint (303).

2. The precast concrete square pile with compressive and tensile strength according to claim 1, characterized in that: The auxiliary mechanism (4) includes a concrete layer (401), longitudinal steel bars (402), stirrups (403), hollow cavity (404), foamed concrete (405) and nano-silicon waterproof coating (406), and the inner end of the concrete square pile body (1) is fixedly provided with a concrete layer (401).

3. The precast concrete square pile with compressive and tensile strength according to claim 2, characterized in that: The inner end of the concrete layer (401) is uniformly fixed with a number of longitudinal steel bars (402), and the outer end of the longitudinal steel bars (402) is fixed with a number of stirrups (403).

4. A precast concrete square pile with compressive and tensile strength according to claim 3, characterized in that: The stirrup (403) is located at the inner end of the concrete layer (401), and a hollow cavity (404) is opened at the inner end of the concrete square pile body (1).

5. A precast concrete square pile with compressive and tensile strength according to claim 4, characterized in that: Foamed concrete (405) is fixedly provided at the inner end of the hollow cavity (404), and the foamed concrete (405) is fixedly connected to the concrete layer (401).

6. A precast concrete square pile with compressive and tensile strength according to claim 5, characterized in that: The outer end of the concrete square pile body (1) is fixedly provided with a nano-silicon waterproof coating (406).

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