Anti-pulling structure of prestressed solid square pile

Abstract

The utility model relates to the technical field of precast piles, in particular to an anti-pulling structure of a prestressed solid square pile, which comprises a square pile main body, reinforcing steel bars and spiral steel bars, a grouting space is arranged in the square pile main body, the reinforcing steel bars are arranged in the grouting space in a surrounding manner, and the spiral steel bars are sleeved on the outer sides of the reinforcing steel bars. Reinforcing plates are embedded in the inner sides of the multiple sets of reinforcing steel bars, inner grooves are formed in the middles of the axes of the reinforcing plates, and notch grooves are formed in the periphery of the plane of each reinforcing plate. Side grooves are formed in the periphery of the outer portion of the square pile body, and circular grooves are formed in the two ends, close to the reinforcing steel bars, of the square pile body. The problems that in the prior art, when an existing solid square pile faces deep soft soil, weathered rock strata and other complex geological conditions, the pulling resistance of the existing solid square pile is limited, and the strict requirements of modern high-rise buildings, large bridges and the like for the high bearing capacity and stability of a pile foundation are difficult to meet are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated piles, in particular to a pull-out resistant structure of a prestressed solid square pile. Background Art

[0002] Precast reinforced concrete square piles are an important foundation material for civil engineering and construction projects in my country, and are also one of the most produced prefabricated concrete products in the country. They offer the following characteristics: high concrete strength and high bearing capacity per pile; construction is less affected by groundwater fluctuations; and they are easy to manufacture, allowing for both on-site prefabrication and factory production. Various specifications and lengths can be produced to suit varying geological conditions.

[0003] When faced with complex geological conditions such as deep soft soil and weathered rock formations, the pull-out resistance of existing solid square piles is often limited, making it difficult to meet the strict requirements of modern high-rise buildings, large bridges, etc. for high bearing capacity and stability of pile foundations.

[0004] Therefore, in view of this, the existing structure and its deficiencies are studied and improved, and a pull-out resistant structure of prestressed solid square piles is proposed in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a pull-out resistant structure of a prestressed solid square pile to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a prestressed solid square pile pull-out structure, comprising a square pile body, reinforcing steel bars, and spiral steel bars; a grouting space is provided inside the square pile body, and reinforcing steel bars are arranged around the inside of the grouting space; spiral steel bars are sheathed on the outside of multiple groups of reinforcing steel bars, and reinforcing plates are embedded on the inside of multiple groups of reinforcing steel bars; an inner groove is provided in the middle of the axis of the reinforcing plate, and notched grooves are provided around the plane of the reinforcing plate;

[0007] Side grooves are provided around the outside of the square pile body, and circular grooves are provided at both ends of the square pile body close to the reinforcing steel bars.

[0008] Furthermore, the square pile body is wrapped and connected with the spiral steel bar through the grouting space, and the square pile body and the spiral steel bar are fixed by concrete bonding.

[0009] Furthermore, the side grooves are distributed in a surrounding manner along the outer wall of the square pile body.

[0010] Furthermore, the spiral steel bar and the four groups of reinforcing steel bars are detachably fixedly connected, and the spiral steel bar and the four groups of reinforcing steel bars are in contact with each other.

[0011] Furthermore, the reinforcement plates are arranged vertically along the surface of the reinforcement steel bars, and multiple groups of reinforcement plates are provided.

[0012] Furthermore, the reinforcement plates are interlocked with the reinforcement steel bars through the notch grooves.

[0013] The utility model provides a pull-out resistant structure of prestressed solid square piles, which has the following beneficial effects:

[0014] 1. In this utility model, the interior of the square pile body is arranged with reinforcing steel bars as the main connecting parts, and spiral steel bars are sheathed on the outside of the reinforcing steel bars. They are closely combined with the concrete filled in the grouting space of the square pile body to form a composite pull-out resistance system, optimize stress distribution, and improve the overall stability of the pile body;

[0015] The combined structure of spiral steel cage and high-performance pull-out concrete can disperse stress through the spiral structure of the steel cage when subjected to vertical upward pull force, and at the same time utilize the bonding force of concrete to work together to significantly improve the pull-out resistance effect.

[0016] 2. In the present invention, reinforcement plates are embedded inside multiple groups of reinforcement bars, and the position of the reinforcement bars can be limited by using notched grooves to ensure the stability of the reinforcement bars during grouting. The inner grooves inside the reinforcement bars ensure the stability of the concrete during solidification.

[0017] 3. In the present invention, the side grooves and circular grooves arranged around the outer side of the square pile body can increase the connection and adhesion between the square pile body and the external space, thereby ensuring the stability of the square pile body during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. Those skilled in the art will readily understand that these drawings are merely used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the pull-out resistant structure of a prestressed solid square pile of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of a pull-out resistant structure of a prestressed solid square pile according to the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of a reinforcement plate of a pull-out resistant structure of a prestressed solid square pile according to the present invention.

[0022] In the figure: 1. Square pile body; 101. Side groove; 102. Circular groove; 103. Grouting space; 2. Reinforcement steel bars; 3. Reinforcement plate; 301. Inner groove; 302. Notched groove; 4. Spiral steel bars. DETAILED DESCRIPTION

[0023] 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 are within the scope of protection of the present invention.

[0024] See also Figure 1-3 The utility model provides a technical solution: an anti-pulling structure of a prestressed solid square pile, comprising a square pile body 1, reinforcing steel bars 2, and spiral steel bars 4. A grouting space 103 is provided inside the square pile body 1, and the reinforcing steel bars 2 are arranged around the grouting space 103. The outer sides of multiple groups of reinforcing steel bars 2 are sheathed with spiral steel bars 4. Reinforcing plates 3 are embedded inside the multiple groups of reinforcing steel bars 2. An inner groove 301 is provided in the middle of the axis of the reinforcing plate 3, and notch grooves 302 are provided around the plane of the reinforcing plate 3.

[0025] Side grooves 101 are provided around the outside of the square pile body 1, and circular grooves 102 are provided at both ends of the square pile body 1 near the reinforcing steel bars 2; the square pile body 1 is wrapped with the spiral steel bars 4 through the grouting space 103, and the square pile body 1 and the spiral steel bars 4 are fixed by concrete bonding; the side grooves 101 are distributed in a surrounding manner along the outer wall of the square pile body 1; the spiral steel bars 4 and the four groups of reinforcing steel bars 2 are detachably fixed, and the spiral steel bars 4 and the four groups of reinforcing steel bars 2 are fitted together; the reinforcing plates 3 are arranged vertically along the surface of the reinforcing steel bars 2, and multiple groups of reinforcing plates 3 are provided; the reinforcing plates 3 are interlocked with the reinforcing steel bars 2 through the notch grooves 302.

[0026] The utility model provides a pull-out resistant structure of prestressed solid square piles, which has the following beneficial effects:

[0027] The interior of the square pile body 1 is provided with reinforcing steel bars 2 as the main connecting member, and spiral steel bars 4 are sheathed on the outside of the reinforcing steel bars 2. They are tightly combined with the concrete filled in the grouting space 103 of the square pile body 1 to form a composite pull-out resistance system, optimize stress distribution, and improve the overall stability of the pile body.

[0028] The combined structure of spiral steel cage and high-performance pull-out concrete can disperse stress through the spiral structure of the steel cage when subjected to vertical upward pull force, and at the same time utilize the bonding force of concrete to work together to significantly improve the pull-out resistance effect.

[0029] Reinforcement plates 3 are embedded inside multiple groups of reinforcing steel bars 2. The notched grooves 302 can be used to limit the position of the reinforcing steel bars 2 to ensure the stability of the reinforcing steel bars 2 during grouting. The inner grooves 301 inside the reinforcing steel bars 2 ensure the stability of the concrete during solidification.

[0030] The side grooves 101 and the circular grooves 102 arranged around the outer side of the square pile body 1 can increase the connection adhesion between the square pile body 1 and the external space, thereby ensuring the stability of the square pile body 1 during installation.

[0031] The above is only a specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any changes or substitutions that can be thought of by any technician familiar with the field within the technical scope disclosed by the present invention without creative work should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A prestressed solid square pile pull-out structure, comprising a square pile body (1), a reinforcing steel bar (2), and a spiral steel bar (4), characterized in that: A grouting space (103) is provided inside the square pile body (1), and reinforcing steel bars (2) are arranged around the inside of the grouting space (103), spiral steel bars (4) are sleeved on the outside of multiple groups of the reinforcing steel bars (2), and reinforcing plates (3) are embedded inside the multiple groups of the reinforcing steel bars (2), an inner groove (301) is provided in the middle of the axis of the reinforcing plate (3), and notch grooves (302) are provided around the plane of the reinforcing plate (3); Side grooves (101) are provided around the outside of the square pile body (1), and circular grooves (102) are provided at both ends of the square pile body (1) close to the reinforcing steel bars (2).

2. The pull-out resistant structure of a prestressed solid square pile according to claim 1, characterized in that: The square pile body (1) is wrapped and connected with the spiral steel bar (4) through the grouting space (103), and the square pile body (1) and the spiral steel bar (4) are fixed by concrete bonding.

3. The pull-out resistant structure of a prestressed solid square pile according to claim 1, characterized in that: The side grooves (101) are distributed in a surrounding manner along the outer wall of the square pile body (1).

4. The pull-out resistant structure of a prestressed solid square pile according to claim 1, characterized in that: The spiral steel bar (4) and the four groups of reinforcing steel bars (2) are detachably fixedly connected, and the spiral steel bar (4) and the four groups of reinforcing steel bars (2) are in contact with each other.

5. The pull-out resistant structure of a prestressed solid square pile according to claim 1, characterized in that: The reinforcement plates (3) are arranged and distributed in a vertical shape along the surface of the reinforcement steel bars (2), and a plurality of groups of reinforcement plates (3) are provided.

6. The pull-out resistant structure of a prestressed solid square pile according to claim 1, characterized in that: The reinforcing plates (3) are interlocked with the reinforcing steel bars (2) via the notched grooves (302).

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