Concrete hollow square pile

Abstract

The utility model discloses a concrete hollow square pile which comprises a reinforcement cage and a concrete layer wrapping the reinforcement cage, the reinforcement cage comprises an outer-layer reinforcement and an inner-layer reinforcement, the outer-layer reinforcement comprises a plurality of outer reinforcing steel bars which form a square in a surrounding mode, the inner-layer reinforcement comprises a plurality of inner reinforcing steel bars which form a square in a surrounding mode, the outer reinforcing steel bars are sleeved with a plurality of outer square frames which are arranged in sequence, and the outer square frames are sleeved with inner square frames. End plates are arranged at the two ends of the reinforcement cage respectively, center openings are formed in the middles of the end plates, hollow parts are arranged in the middles of the concrete layers, the center openings are communicated with the hollow parts, a plurality of through holes are formed in the end plates, the outer reinforcements are provided with threaded parts after penetrating through the through holes, and the outer reinforcements and the end plates are welded; and the inner steel bars are welded with the end plates. According to the concrete hollow square pile, the outer-layer ribs and the inner-layer ribs are matched and can be independently machined and then assembled, the whole rib cage does not need to be rotated to wind reinforcing steel bars, the machining difficulty of the rib cage is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of square pile technology, specifically relating to hollow concrete square piles. Background Technology

[0002] Prestressed concrete pipe piles are slender, tubular components driven into the ground, with a cross-sectional dimension much smaller than their length. The upper part of the pipe pile is connected to a pile cap (beam) to form a pile foundation. The foundation structure is a prestressed concrete structure, which can be divided into post-tensioned prestressed pipe piles and pre-tensioned prestressed pipe piles. They feature high bearing capacity, good stability, and low settlement, and can be constructed using mechanized methods, greatly improving construction progress. Pipe piles come in various types, and hollow concrete square piles are convenient to transport and store, saving costs. However, in existing hollow concrete square piles, the reinforcing bars outside the skeleton are wound around the skeleton by rotation, and then fixed by welding or binding. Because the cross-section of the square pile skeleton is square, a large tensile force is required when winding the reinforcing bars to fit them into the skeleton. The subsequent welding or binding process requires workers to use tools to tighten and fix them, which is very inconvenient. Therefore, improvements to the existing hollow concrete square pile structure are needed. Utility Model Content

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a hollow concrete square pile, comprising a reinforcing cage and a concrete layer enclosing the reinforcing cage. The reinforcing cage includes an outer layer of reinforcing bars and an inner layer of reinforcing bars. The outer layer of reinforcing bars includes several outer reinforcing bars forming a square, and the inner layer of reinforcing bars includes several inner reinforcing bars forming a square. The outer reinforcing bars are fitted inside several sequentially arranged outer square frames, and the inner reinforcing bars are fitted inside several sequentially arranged inner square frames. The outer square frames and the outer reinforcing bars are welded together or connected by steel wire binding. The two ends of the reinforcing cage are respectively provided with end plates, and the middle of the end plates is provided with a central opening. The middle of the concrete layer is provided with a hollow part, and the central opening is connected to the hollow part. The end plates are provided with several through holes for the outer reinforcing bars to pass through. After the outer reinforcing bars pass through the through holes, they are provided with threaded parts. The outer reinforcing bars are welded to the end plates, and the inner reinforcing bars are welded to the end plates.

[0004] As a preferred embodiment of the above technical solution, the outer square frame and the inner square frame are staggered.

[0005] As a preferred embodiment of the above technical solution, the number of outer reinforcing bars is 8, of which 4 outer reinforcing bars are located at the four corners of the outer square frame, and the remaining 4 outer reinforcing bars are located at the middle of each side of the outer square frame. The number of inner reinforcing bars is 4, and the 4 inner reinforcing bars are located at the four corners of the inner square frame.

[0006] As a preferred embodiment of the above technical solution, a support rod is connected to the middle part of each side of the inner square frame. One end of the support rod is connected to the inner square frame, and the other end is connected to the outer steel bar located in the middle of each side of the outer square frame.

[0007] As a preferred embodiment of the above technical solution, the inner square frame is formed by bending a steel bar and then joining the ends together, the outer square frame is formed by bending a steel bar and then joining the ends together, and the two ends of the support rod are respectively connected to arc-shaped support plates.

[0008] As a preferred embodiment of the above technical solution, the support rod is made of steel bars, wood or plastic, and the end plate is made of steel.

[0009] The beneficial effects of this utility model are: the concrete hollow square pile of this utility model uses an outer layer of reinforcement and an inner layer of reinforcement in the reinforcement cage, which can be processed separately and then assembled. It does not require rotating the entire reinforcement cage to wrap the steel bars, which reduces the processing difficulty of the reinforcement cage and improves production efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model. Detailed Implementation

[0012] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] like Figure 1-2 As shown, a hollow concrete square pile includes a reinforcing cage and a concrete layer enclosing the reinforcing cage. The reinforcing cage includes outer and inner reinforcing bars. The outer reinforcing bars include several outer reinforcing bars 1 arranged in a square shape, and the inner reinforcing bars include several inner reinforcing bars 2 arranged in a square shape. The outer reinforcing bars 1 are fitted within several sequentially arranged outer square frames 3, and the inner reinforcing bars 2 are fitted within several sequentially arranged inner square frames 4. The outer square frames 3 are welded to the outer reinforcing bars 1. The reinforcing cage has end plates 5 at both ends, and a central opening 6 in the middle of the end plates 5. The middle of the concrete layer has a hollow section, and the central opening 6 connects to the hollow section. The end plates 5 have several through holes for the outer reinforcing bars 1 to pass through. After passing through the through holes, the outer reinforcing bars 1 have threaded portions 7. The outer reinforcing bars 1 are welded to the end plates 5, and the inner reinforcing bars 2 are welded to the end plates 5. The outer and inner reinforcing bars are fabricated separately and then assembled, eliminating the need for the reinforcing bar winding process required in traditional square pile structures, thus reducing the difficulty of reinforcing cage production and processing.

[0016] Furthermore, the outer square frame 3 and the inner square frame 4 are staggered to improve the shear resistance of the pipe pile.

[0017] Furthermore, the number of outer reinforcing bars 1 is 8, of which 4 outer reinforcing bars 1 are located at the four corners of the outer square frame 3, and the remaining 4 outer reinforcing bars 1 are located at the middle of each side of the outer square frame 3. The number of inner reinforcing bars 2 is 4, of which 4 inner reinforcing bars 2 are located at the four corners of the inner square frame 4.

[0018] Furthermore, support rods 9 are connected to the middle of each side of the inner square frame 4. One end of the support rod 9 is connected to the inner square frame 4, and the other end is connected to the outer reinforcing bars 1 located at the middle of each side of the outer square frame 3. The support rods 9 maintain the structural stability of the outer and inner reinforcing bars during concrete pouring, and at the same time play a role in improving the strength of the reinforcing cage structure.

[0019] Furthermore, the inner square frame 4 is formed by bending a single steel bar and joining its ends together, and the outer square frame 3 is formed by bending a single steel bar and joining its ends together. Arc-shaped support plates 10 are connected to both ends of the support rod 9. The arc-shaped support plates 10 support the inner square frame 4 or the outer steel bar 1, forming the entire outer and inner layer of reinforcement. After pouring concrete, the outer and inner layer of reinforcement form an integral structure, improving the strength of the pipe pile structure.

[0020] Furthermore, the support rod 9 is made of wood, and the end plate 5 is made of steel. The support rod 9 is made of wood, which is low-cost and readily available.

[0021] It is worth mentioning that the welding and other technical features involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be adopted using conventional choices in the field, and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0022] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.

Claims

1. A hollow concrete square pile, comprising a reinforcing cage and a concrete layer enclosing the reinforcing cage, characterized in that, The reinforcing cage includes an outer layer of reinforcing bars and an inner layer of reinforcing bars. The outer layer of reinforcing bars includes several outer reinforcing bars arranged in a square shape, and the inner layer of reinforcing bars includes several inner reinforcing bars arranged in a square shape. The outer reinforcing bars are fitted inside several outer square frames arranged in sequence, and the inner reinforcing bars are fitted inside several inner square frames arranged in sequence. The outer square frames and the outer reinforcing bars are welded together or tied together with steel wire. The two ends of the reinforcing cage are respectively provided with end plates. The end plates are provided with a central opening in the middle. The middle of the concrete layer is provided with a hollow part. The central opening is connected to the hollow part. The end plates are provided with several through holes for the outer reinforcing bars to pass through. The outer reinforcing bars are provided with threaded parts after passing through the through holes. The outer reinforcing bars are welded to the end plates, and the inner reinforcing bars are welded to the end plates.

2. The hollow concrete square pile as described in claim 1, characterized in that, The outer and inner square frames are staggered.

3. The hollow concrete square pile as described in claim 2, characterized in that, The number of outer reinforcing bars is 8, of which 4 are located at the four corners of the outer square frame and the other 4 are located in the middle of each side of the outer square frame. The number of inner reinforcing bars is 4, of which 4 are located at the four corners of the inner square frame.

4. The hollow concrete square pile as described in claim 3, characterized in that, Each side of the inner square frame is connected to a support rod at its midpoint. One end of the support rod is connected to the inner square frame, and the other end is connected to the outer steel bar located at the midpoint of each side of the outer square frame.

5. The hollow concrete square pile as described in claim 4, characterized in that, The inner square frame is formed by bending a steel bar and joining the ends together, and the outer square frame is formed by bending a steel bar and joining the ends together. The two ends of the support rod are respectively connected to arc-shaped brackets.

6. The hollow concrete square pile as described in claim 5, characterized in that, The support rod is made of steel bars, wood, or plastic, and the end plate is made of steel.

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