High-strength and cushioning prestress corrugated pipe facilitating uniform concrete grouting

Abstract

The utility model discloses a high-strength and cushioning prestressed corrugated pipe convenient for uniform grouting of concrete, which belongs to the technical field of prestressed corrugated pipes and comprises a corrugated pipe body, the corrugated pipe body consists of a corrugated pipe outer pipe and a corrugated pipe inner pipe, the diameter of the corrugated pipe inner pipe is smaller than that of the corrugated pipe outer pipe, and the corrugated pipe inner pipe is sleeved inside the corrugated pipe outer pipe. A cavity is formed between the inner wall of the corrugated pipe outer pipe and the outer wall of the corrugated pipe inner pipe, and the cavity is filled with a cushioning material to form a cushioning layer; grouting hole channels are formed in the middles of the corrugated pipe inner pipe and the corrugated pipe outer pipe, and reinforced plastic pipes are arranged in the grouting hole channels. The cavity between the corrugated pipe outer pipe and the corrugated pipe inner pipe is filled with the buffering material, so that the buffering capacity of the prestressed corrugated pipe for external impact or vibration can be improved, and the overall strength of the prestressed corrugated pipe is improved. The grouting hole channel and the reinforced plastic pipe are arranged in the middle of the corrugated pipe body, during grouting, slurry flows from the low position to the high position, and uniformity and compactness of grouting are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of prestressed corrugated pipes, and in particular relates to a high-strength and shock-absorbing prestressed corrugated pipe that is convenient for uniform concrete grouting. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Prestressed concrete structures enhance the load-bearing capacity, stiffness, and crack resistance of concrete components by pre-applying compressive stress. Prestressed channel technology is a key technology in post-tensioning prestressing construction, and prestressed corrugated pipes are a key material for this technology. Prestressed corrugated pipes are primarily used to encase and protect prestressed steel strands or wire bundles, forming a prestressed system during the concrete pouring process.

[0004] Most existing prestressed corrugated pipes are made of thin metal sheets, which have relatively low rigidity and are easily deformed by external forces. They are also prone to breakage and rust. To address this technical problem, patent CN215406937U discloses a prestressed plastic corrugated pipe. This utility model discloses a prestressed plastic corrugated pipe comprising a corrugated outer pipe and an inner pipe. The corrugated outer pipe structure effectively protects the inner pipe.

[0005] However, the above solution still has the following technical problems:

[0006] First, although the corrugated outer pipe can protect the inner pipe, it can also transmit the impact to the inner pipe, and thus to the slurry inside the inner pipe, which cannot ensure internal stability;

[0007] Secondly, in the traditional method, when grouting the corrugated pipe, the order from high to low is often adopted, resulting in insufficient grouting in the upper layer and excessive grouting in the lower layer, affecting the stability and durability of the overall structure. Utility Model Content

[0008] In response to the above problems, the utility model provides a high-strength, shock-absorbing prestressed corrugated pipe that is convenient for uniform grouting of concrete. By filling the cavity between the outer tube and the inner tube of the corrugated pipe with buffer material, the shock-absorbing ability of the prestressed corrugated pipe to cope with external impact or vibration can be improved; the corrugated pipe body is designed to have a low middle part and high two ends. A grouting channel and a reinforced plastic pipe are arranged in the middle of the corrugated pipe body, and slurry holes are arranged at both ends. During grouting, the slurry flows from low to high, squeezing out the air in the inner tube of the corrugated pipe to fill the gap, thereby ensuring the uniformity and density of the grouting.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting includes a corrugated pipe body, which is composed of a corrugated pipe outer pipe and a corrugated pipe inner pipe. The diameter of the corrugated pipe inner pipe is smaller than that of the corrugated pipe outer pipe. The corrugated pipe inner pipe is sleeved inside the corrugated pipe outer pipe, forming a cavity between the inner wall of the corrugated pipe outer pipe and the outer wall of the corrugated pipe inner pipe. The cavity is filled with a shock-absorbing material to form a shock-absorbing layer.

[0011] A grouting channel is provided in the middle of the inner tube and the outer tube of the corrugated pipe, and a reinforced plastic pipe is arranged in the grouting channel.

[0012] Preferably, a trapezoidal thread is provided on the outer wall of the outer tube of the corrugated pipe.

[0013] Preferably, the shock-absorbing material is made of rubber or foam.

[0014] Preferably, the outer tube and the inner tube of the bellows are both made of aluminum alloy.

[0015] Preferably, one end of the reinforced plastic tube is open and faces the side away from the inner tube of the corrugated tube, for connecting to the grouting pipe.

[0016] Preferably, the other end of the reinforced plastic tube extends into the inner tube of the corrugated tube, and the other end is fixedly connected to the dispersion plate.

[0017] Preferably, a plurality of small circular holes are evenly arranged on the dispersion plate.

[0018] Preferably, the bellows body is arranged inside the prefabricated component.

[0019] Preferably, one open end of the reinforced plastic tube needs to extend out of the prefabricated component and be arranged outside the prefabricated component.

[0020] Preferably, both ends of the bellows body are inclined upward, the middle of the bellows body is the lowest point of the bellows body, and a first slurry outlet hole and a second slurry outlet hole are respectively provided at both ends of the bellows body.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are:

[0022] The utility model can improve the shock absorbing ability of the prestressed corrugated pipe in response to external impact or vibration by filling the cushioning material in the cavity between the outer tube and the inner tube of the corrugated pipe, thereby improving the overall strength of the prestressed corrugated pipe.

[0023] The utility model designs the bellows body into a structure with a low middle portion and high ends. A grouting channel and a reinforced plastic pipe are arranged in the middle portion of the bellows body, and slurry outlet holes are arranged at both ends of the bellows body. During grouting, the slurry flows from the low position to the high position, squeezing out the air in the inner tube of the bellows to fill the gaps, thereby ensuring the uniformity and density of the grouting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 This is a cross-sectional view of the bellows body of Example 1 of the present utility model;

[0026] Figure 2 This is a schematic diagram of the outer tube of the bellows in Example 1 of the present utility model;

[0027] Figure 3 This is a schematic diagram of a reinforced plastic tube according to Example 1 of the present utility model;

[0028] Figure 4 This is a front view of the bellows body of Example 1 of the present utility model;

[0029] In the picture:

[0030] 1. Trapezoidal thread; 2. Reinforced plastic pipe; 3. Outer tube of corrugated pipe; 4. Shock-absorbing layer; 5. Inner tube of corrugated pipe; 6. Grouting channel; 7. Dispersion plate; 8. First slurry outlet hole; 9. Second slurry outlet hole. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0032] The present invention will be described in detail below with reference to the accompanying drawings. This embodiment discloses a high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform grouting of concrete. Figure 1 、 Figure 2 As shown, the bellows body is composed of a bellows outer tube 3 and a bellows inner tube 5. The diameter of the bellows inner tube 5 is smaller than that of the bellows outer tube 3. The bellows inner tube 5 is sleeved inside the bellows outer tube 3, thereby forming a cavity between the inner wall of the bellows outer tube 3 and the outer wall of the bellows inner tube 5, and a shock-absorbing layer 4 is formed by filling the cavity with shock-absorbing material.

[0033] In this embodiment, the shock absorbing material can be made of rubber or foam. The reasons for choosing these two types of shock absorbing materials are that, firstly, they are common shock absorbing materials with good performance; secondly, they are cheap and can reduce the cost.

[0034] It is understandable that when the outer tube of the bellows is subjected to vibration impact, the shock-absorbing layer 4 can effectively disperse and resist the impact caused by the vibration, ensuring the stability of the inner tube of the bellows, so as to improve the overall seismic performance of the bellows.

[0035] In this embodiment, the outer tube 3 and the inner tube 5 of the bellows are both made of aluminum alloy, which has strong strength and improves the overall strength of the bellows.

[0036] like Figure 1 、 Figure 2 As shown, a trapezoidal thread 1 is provided on the outer wall of the outer tube 3 of the corrugated pipe. The purpose of setting the outer wall of the outer tube 3 of the corrugated pipe as a trapezoidal thread is that the trapezoidal thread can increase the contact area between the outer tube of the corrugated pipe and the concrete, thereby increasing the overall gripping ability of the corrugated pipe.

[0037] like Figure 1 As shown, a grouting channel 6 is opened upward in the middle of the inner tube 5 and the outer tube 3 of the bellows, and a reinforced plastic pipe 2 is arranged in the grouting channel 6; one end of the reinforced plastic pipe 2 is open and faces the side away from the inner tube 5 of the bellows, which is used to connect the grouting pipe, thereby transporting the slurry into the inner tube 5 of the bellows; Figure 1 As shown, the other end of the reinforced plastic tube 2 extends into the inner tube 5 of the corrugated tube, and the end is fixedly connected to the dispersion plate 7; Figure 3 As shown, a plurality of small circular holes are evenly arranged on the dispersion plate 7 to ensure that the slurry is evenly transported to the inner tube of the corrugated tube. In this embodiment, a small circular hole is set at the center of the dispersion plate, and the remaining small circular holes are distributed in a matrix with the center of the dispersion plate.

[0038] like Figure 4 As shown, the two ends of the bellows body are inclined upward, and the middle of the bellows body is the lowest point of the bellows body. A first slurry outlet hole 8 and a second slurry outlet hole 9 are respectively provided at both ends of the bellows body. During grouting, the grouting pipe is connected to the reinforced plastic pipe 2 for grouting. When slurry overflows from both the first slurry outlet hole 8 and the second slurry outlet hole 9, the grouting is completed. After the grouting is completed, the grouting holes and the first and second slurry outlet holes should be sealed to prevent slurry from seeping out.

[0039] In this embodiment, a grouting channel 6 is opened upward in the middle of the bellows body. Since the middle of the bellows body is the lowest point of the bellows, the slurry flows from low to high inside the inner tube of the bellows during grouting, so that the slurry can flow naturally and fill the gaps in the inner tube of the bellows, expelling the air and ensuring the uniformity and continuity of the grouting.

[0040] It is understandable that the corrugated pipe body is set inside the prefabricated component and needs to be tied in advance in the steel mesh of the prefabricated component and then cast together with the prefabricated component; it should be noted that the open end of the reinforced plastic pipe 2 needs to extend out of the prefabricated component and needs to be set outside the prefabricated component to ensure that grouting can be done into the corrugated pipe through the reinforced plastic pipe after tensioning; similarly, the first slurry outlet hole and the second slurry outlet hole should also extend out of the prefabricated component to ensure that air can be discharged from the inner tube of the corrugated pipe during grouting, and it can also be observed whether the grouting is completed. After the prefabricated component is cast, tensioning is performed through the corrugated pipe body, and then grouting is done into the inner tube of the corrugated pipe through the reinforced plastic pipe 2 set outside the prefabricated component.

[0041] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting, characterized in that: The bellows body comprises a bellows outer tube and a bellows inner tube. The inner tube has a smaller diameter than the outer tube. The inner tube is sleeved inside the outer tube to form a cavity between the inner wall of the outer tube and the outer wall of the inner tube. The cavity is filled with a shock-absorbing material to form a shock-absorbing layer. A grouting channel is provided in the middle of the inner tube and the outer tube of the corrugated pipe, and a reinforced plastic pipe is arranged in the grouting channel.

2. A high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting as claimed in claim 1, characterized in that: Trapezoidal threads are arranged on the outer wall of the outer tube of the corrugated pipe.

3. A high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting as claimed in claim 1, characterized in that: The shock absorbing material is made of rubber or foam.

4. A high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting as claimed in claim 1, characterized in that: The outer tube and the inner tube of the bellows are both made of aluminum alloy.

5. A high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting as claimed in claim 1, characterized in that: One end of the reinforced plastic pipe is open and faces the side away from the inner pipe of the corrugated pipe, and is used for connecting the grouting pipe.

6. A high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting as claimed in claim 1, characterized in that: The other end of the reinforced plastic tube extends into the inner tube of the corrugated tube, and the other end is fixedly connected to the dispersion plate.

7. A high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting as claimed in claim 6, characterized in that: A plurality of small circular holes are evenly arranged on the dispersion plate.

8. The high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting according to claim 1, characterized in that: The bellows body is arranged inside the prefabricated component.

9. A high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting as claimed in claim 8, characterized in that: One open end of the reinforced plastic tube needs to extend out of the prefabricated component and be arranged outside the prefabricated component.

10. The high-strength, shock-absorbing prestressed corrugated pipe that facilitates uniform concrete grouting according to claim 1, characterized in that: Both ends of the bellows body are inclined upward, the middle of the bellows body is the lowest point of the bellows body, and a first slurry outlet hole and a second slurry outlet hole are respectively provided at both ends of the bellows body.

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