Pre-tensioning method prestress centrifugal concrete hollow square pile

Abstract

The utility model provides a pre-tensioning method prestress centrifugal concrete hollow square pile which comprises a hollow square pile body, the hollow square pile body is made of concrete and a steel framework, a centrifugal empty groove is formed in the center of the hollow square pile body, and the steel framework comprises end plates located at the two ends of the hollow square pile body. The L-shaped edge protecting plates are arranged at the four corners of the hollow square pile body, so that the four corners of the hollow square pile body are protected, the probability that the corners of the hollow square pile are collided and damaged in the transportation process is reduced, meanwhile, the L-shaped edge protecting plates are directly connected with the reinforcement cage in the hollow square pile, and the safety of the hollow square pile is improved. And the n-shaped connecting pieces are used for achieving connection between the L-shaped edge protecting plates and the reinforcement cage, when concrete is poured in the production process of the hollow square pile, the n-shaped connecting pieces can be covered with the concrete, and therefore the connecting strength of the L-shaped edge protecting plates is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow square piles, in particular to a pre-tensioned prestressed centrifugal concrete hollow square pile. Background Art

[0002] Prestressed square piles are hollow cylindrical slender concrete precast components made by prestressing technology and centrifugal forming. They are mainly composed of square pile bodies, end plates and steel hoops.

[0003] The surface of the hollow square pile is made of concrete, which makes its edges and corners easily collapse after being hit, causing damage to the edges and corners of the hollow square pile and affecting the use of the hollow square pile.

[0004] Therefore, we made an improvement and proposed pre-stressed centrifugal concrete hollow square piles. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a pre-tensioned prestressed centrifugal concrete hollow square pile, comprising a hollow square pile body, the hollow square pile body is made of concrete and a steel frame, and a centrifugal hollow groove is arranged in the center, the steel frame comprises end plates located at both ends of the hollow square pile body, a steel cage arranged between the two end plates, and L-shaped edge guard plates arranged at four corners of the hollow square pile body, the steel frame also comprises a "J"-shaped connecting piece arranged on four sides of the steel cage, and the two ends of the "J"-shaped connecting piece are respectively fixedly connected to the inner sides of two adjacent L-shaped edge guard plates.

[0007] As a preferred technical solution of the utility model, the two ends of the steel cage are respectively fixedly connected to the two end plates.

[0008] As a preferred technical solution of the present invention, edges of the two end plates on opposite sides are both provided with covering guard plates.

[0009] As a preferred technical solution of the utility model, the outer surface of the L-shaped edge guard plate is flush with the surface of the hollow square pile body.

[0010] As a preferred technical solution of the utility model, there are multiple X-shaped connectors on the same side of the steel cage, and they are evenly distributed.

[0011] As a preferred technical solution of the utility model, the distance between two adjacent "X"-shaped connectors is between 15cm and 30cm.

[0012] The beneficial effects of the utility model are:

[0013] The utility model provides L-shaped edge guards at the four corners of the hollow square pile body, thereby protecting the four corners of the hollow square pile body, reducing the probability of the corners of the hollow square pile being damaged by collision during transportation, and at the same time, the L-shaped edge guard is directly connected to the steel cage inside the hollow square pile, thereby improving the integrity of the L-shaped edge guard and the hollow square pile, and the "J"-shaped connecting piece is used to realize the connection between the L-shaped edge guard and the steel cage. When pouring concrete in the production process of the hollow square pile, the concrete will cover the "J"-shaped connecting piece, thereby further improving the connection strength of the L-shaped edge guard, and in addition, through the provided L-shaped edge guard, when the steel cage is placed in the mold of the hollow square pile, the middle part of the steel cage can be supported to prevent the middle part of the steel cage from bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components in the exemplary embodiments of the present disclosure.

[0015] Figure 1 It is a stereoscopic diagram of the prestressed centrifugal concrete hollow square pile of the utility model;

[0016] Figure 2 It is a stereoscopic diagram of the steel skeleton of the pre-tensioned centrifugal concrete hollow square pile of the utility model;

[0017] Figure 3 It is a cross-sectional view of the pre-tensioned centrifugal concrete hollow square pile of the utility model;

[0018] Figure 4 The utility model is a stereoscopic diagram of the prestressed centrifugal concrete hollow square pile end plate of the prestressed method.

[0019] In the figure: 1. Hollow square pile body; 2. Concrete; 3. Steel skeleton; 31. End plate; 311. Covering guard plate; 32. Steel cage; 33. L-shaped edge guard plate; 34. I-shaped connector. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0021] Example: Figure 1-4As shown, the utility model pre-tensioned prestressed centrifugal concrete 2 hollow square pile includes a hollow square pile body 1, the hollow square pile body 1 is made of concrete 2 and a steel frame 3, and a centrifugal hollow groove is arranged in the center, the centrifugal hollow groove is used to reduce the dead weight of the hollow square pile body 1, the steel frame 3 includes end plates 31 located at both ends of the hollow square pile body 1, a steel cage 32 arranged between the two end plates 31, and L-shaped side guard plates 33 arranged at the four corners of the hollow square pile body 1. The steel frame 3 also includes a "J"-shaped connecting piece 34 arranged on the four sides of the steel cage 32, and the two ends of the "J"-shaped connecting piece 34 are respectively fixedly connected to the inner sides of two adjacent L-shaped side guard plates 33, and the connecting piece is connected to the steel cage 32 and the L-shaped side guard plate by welding.

[0022] The two ends of the steel cage 32 are respectively fixedly connected to the two end plates 31 , and the steel cage 32 and the end plates 31 are connected by welding.

[0023] Wherein, the edges of the two end plates 31 on the opposite sides are both provided with covering plates 311, and the covering plates 311 can protect the concrete 2 at the ends of the hollow square piles, thereby preventing the hollow square piles from being damaged by collision.

[0024] The outer surface of the L-shaped edge plate 33 is flush with the surface of the hollow square pile body 1 .

[0025] There are multiple I-shaped connectors 34 on the same side of the steel cage 32, and they are evenly distributed; the spacing between two adjacent I-shaped connectors 34 is between 15cm and 30cm, which reduces the number of I-shaped connectors 34 while ensuring the connection strength between the L-shaped side guard plate and the steel cage 32.

[0026] Working principle: The utility model provides L-shaped edge guard plates 33 at the four corners of the hollow square pile body 1, thereby protecting the four corners of the hollow square pile body 1 and reducing the probability of the corners of the hollow square pile being damaged by collision during transportation. At the same time, the L-shaped edge guard plates 33 are directly connected to the steel cage 32 inside the hollow square pile, thereby improving the integrity of the L-shaped edge guard plates 33 and the hollow square pile. The "J"-shaped connector 34 is used to achieve the connection between the L-shaped edge guard plates 33 and the steel cage 32. When pouring concrete 2 during the production of the hollow square pile, the concrete 2 will cover the "J"-shaped connector 34, thereby further improving the connection strength of the L-shaped edge guard plates. In addition, through the provided L-shaped edge guard plates, when the steel cage 32 is placed in the mold of the hollow square pile, the middle part of the steel cage 32 can be supported to prevent the middle part of the steel cage 32 from bending.

[0027] To facilitate understanding of the scheme and effects of the embodiment of the utility model, a specific application example is given below. Those skilled in the art should understand that this example is only for facilitating understanding of the utility model, and any specific details thereof are not intended to limit the utility model in any way.

[0028] Those skilled in the art should understand that the purpose of the above description of the embodiments of the present invention is only to exemplarily illustrate the beneficial effects of the embodiments of the present invention, and is not intended to limit the embodiments of the present invention to any given examples.

[0029] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A pre-tensioned prestressed centrifugal concrete hollow square pile, characterized in that: The invention comprises a hollow square pile body (1), wherein the hollow square pile body (1) is made of concrete (2) and a steel frame (3), and a centrifugal slot is arranged at the center thereof; the steel frame (3) comprises end plates (31) located at both ends of the hollow square pile body (1), a steel cage (32) arranged between the two end plates (31), and L-shaped edge guard plates (33) arranged at four corners of the hollow square pile body (1); the steel frame (3) further comprises an "X"-shaped connecting piece (34) arranged at four sides of the steel cage (32), and the two ends of the "X"-shaped connecting piece (34) are respectively fixedly connected to the inner sides of two adjacent L-shaped edge guard plates (33).

2. The pre-tensioned prestressed centrifugal concrete hollow square pile according to claim 1, characterized in that: The two ends of the steel cage (32) are respectively fixedly connected to the two end plates (31).

3. The pre-tensioned prestressed centrifugal concrete hollow square pile according to claim 1, characterized in that: The edges of the two end plates (31) on opposite sides are both provided with covering protective plates (311).

4. The pre-tensioned prestressed centrifugal concrete hollow square pile according to claim 1, characterized in that: The outer surface of the L-shaped edge guard plate (33) is flush with the surface of the hollow square pile body (1).

5. The pre-tensioned prestressed centrifugal concrete hollow square pile according to claim 1, characterized in that: There are a plurality of the "X"-shaped connectors (34) on the same side of the steel cage (32), and they are evenly distributed.

6. The pre-tensioned prestressed centrifugal concrete hollow square pile according to claim 1, characterized in that: The distance between two adjacent "X"-shaped connecting members (34) is between 15 cm and 30 cm.

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