Concrete pipeline connecting structure

Abstract

The utility model provides a concrete pipeline connecting structure which comprises pipelines, anchoring parts and prestressed steel strands. The anchoring parts are oppositely arranged on the outer walls of the two pipelines to be connected and provided with tensioning hole channels respectively. The tensioning hole channel extends in the axis direction of the pipeline. The prestressed steel strand penetrates through the two tensioning hole channels, so that the anchoring parts abut against each other to achieve connection of the pipelines. The pipeline can adopt socket connection, plain end connection and tongue-and-groove connection. According to the utility model, the anchoring part and the prestressed steel strand are arranged, so that the leakproofness of a pipeline connecting part is ensured; and the bending resistance of the pipeline connection part is improved, and the firmness and reliability of pipeline connection are improved. The connecting method is easy and convenient to operate and easy to control, the connecting quality of the pipeline is guaranteed, the anchoring part and the prestressed steel strand can effectively play a role, and therefore the connecting portion of the pipeline has good bending resistance and stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipelines, in particular to a concrete pipeline connection structure. Background Art

[0002] Municipal road drainage construction generally uses reinforced concrete pipes, and the pipe joints are of various forms such as flat end, tongue and groove, and socket joints. In the actual construction process, the construction quality of the pipe joints directly determines the overall quality of the pipe. Pipe joints are affected by various factors during use, and it is inevitable that there will be varying degrees of looseness. Even if a concrete foundation and encapsulated socket pipe are used, the interface will still crack due to uneven settlement, causing the sealing rubber ring to fail to function and start leaking, which in turn leads to the formation of cavities after hollowing out the surrounding soil, causing surface collapse. The existing technology usually adopts methods such as plugging the joints, wrapping with concrete, and thickening the foundation for reinforcement, but the actual use effect is not ideal; there is also a method of locally adding casing in the existing technology, which cannot fundamentally solve the quality risks of loose joints. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a concrete pipe connection structure, which makes the pipe connection part have good airtightness, bending resistance and stability.

[0004] The technical solution adopted by the utility model is: a concrete pipe connection structure, including a pipe, an anchor and a prestressed steel strand: the anchor is arranged relative to the outer walls of the two pipes to be connected, and has a tensioning channel; the tensioning channel extends in a direction parallel to the axis of the pipe; the prestressed steel strand passes through the two tensioning channels, so that the anchors are pressed against each other to achieve the connection of the pipes.

[0005] Furthermore, the pipe socket connection has a socket and a spigot; the socket includes an outward expansion portion arranged on the outer wall and a step portion arranged on the inner wall, and the spigot cooperates with the step portion; the anchor includes the outward expansion portion and a tensioning member, and the tensioning member is arranged close to the spigot.

[0006] Furthermore, the pipeline is connected with a flat end, and the anchoring piece includes a tensioning piece provided at both ends of the pipeline, and the tensioning piece is aligned with the flat end.

[0007] Furthermore, the pipeline is connected through a tongue and groove, and the anchor is arranged on the tensioning members at both ends of the pipeline; the tensioning member at one end is aligned with the outer edge of the pipeline; the tensioning member at the other end is arranged on the inner side of the tongue and groove and aligned with the tongue and groove.

[0008] Furthermore, the tensioning member includes an embedded member and a connecting member, the embedded member is embedded in the pipeline, the connecting member is connected to the embedded member, and is provided with the tensioning channel.

[0009] Furthermore, the embedded part is a sleeve, which is arranged along the radial direction of the pipeline, and the tensioning member is provided with a threaded rod that cooperates with the sleeve.

[0010] Furthermore, the tensioning members are evenly circumferentially arranged on the pipeline.

[0011] Furthermore, the tensioning channel includes an anchoring channel, and the anchoring channel is used to install an anchor.

[0012] Furthermore, the embedded part is connected to the steel mesh of the pipeline.

[0013] The advantages and positive effects of the utility model are:

[0014] (1) By providing anchors and prestressed steel strands, relative axial pressure can be provided to the two pipes to be connected, so that the ends of the pipes are pressed against each other, ensuring the airtightness of the pipe connection parts;

[0015] (2) The bending resistance of the pipeline connection is improved, making it less likely to deform or loosen under the influence of external factors such as uneven settlement, thereby improving the firmness and reliability of the pipeline connection.

[0016] (3) The connection method is simple to operate and easy to control, which ensures the connection quality of the pipeline and enables the anchors and prestressed steel strands to play an effective role, so that the connection parts of the pipeline have good bending resistance and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the first embodiment of the present invention

[0018] Figure 2 This is a schematic diagram of the connection of tensioning members in a specific embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the tensioning member structure of a specific embodiment of the utility model;

[0020] Figure 4 This is a structural diagram of the second embodiment of the present utility model;

[0021] Figure 5 It is a structural diagram of embodiment 3 of the present utility model.

[0022] In the picture:

[0023] 10. Pipe 11. Socket 111. Expansion

[0024] 112, step 12, socket 13, flat end

[0025] 14. Tongue and Groove

[0026] 20. Anchor 21. Tensioning channel 211. Anchor channel

[0027] 22. Tensioning parts 221, embedded parts 222, connecting parts

[0028] 30. Prestressed steel strand

[0029] 40. Anchor DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described below with reference to the accompanying drawings.

[0031] like Figure 1 As shown, the utility model proposes a concrete pipe connection structure, including a pipe 10, an anchor 20 and a prestressed steel strand 30: the anchor 20 is arranged relative to the outer wall of the two pipes 10 to be connected, and has a tensioning channel 21; the tensioning channel 21 extends in a direction parallel to the axis of the pipe 10; the prestressed steel strand 30 passes through the two tensioning channels 21, so that the anchors 20 are pressed against each other to achieve the connection of the pipes 10.

[0032] The connection parts of the pipelines 10 are usually provided with sealing measures (not shown). Through the above technical solution, the prestressed steel strands 30 are circumferentially arranged on the outer wall of the pipeline 10. Under the action of prestress, relative axial pressure can be provided to the two pipelines 10 to be connected, so that the ports of the pipelines 10 are pressed against each other, ensuring the airtightness of the connection parts of the pipelines 10. At the same time, the bending resistance of the connection parts is improved, so that it is not easy to deform or loosen under the influence of external factors such as uneven settlement, thereby improving the firmness and reliability of the connection of the pipelines 10.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] A concrete pipe connection structure includes a pipe 10, an anchor 20 and a prestressed steel strand 30: wherein the two pipes 10 to be connected adopt a socket connection, each having a socket 11 and a spigot 12; specifically, each pipe 10 includes a pipe 10 body and a bell 11 and a spigot 12 provided at both ends of the pipe 10 body, and the connection of the two pipes 10 is achieved by inserting the spigot 12 of one pipe 10 into the bell 11 of the other pipe 10; it can be understood that the inner wall shape of the bell 11 is similar to the spigot 12. 2, in order to achieve a socket connection; in this embodiment, the socket 11 includes an outward expansion portion 111 provided on the outer wall and a step portion 112 provided on the inner wall, and the socket 12 cooperates with the step portion 112; the anchor 20 includes the outward expansion portion 111 and a tensioning member 22, wherein the tensioning member 22 is arranged close to the socket 12, and the distance between the tensioning member 22 and the outer edge of the socket 12 is the length of the step portion 112 along the axial direction of the pipe 10, so that when the two pipes 10 are connected in socket connection, the tensioning member 22 can abut against the outward expansion portion 111.

[0036] Specifically, both the expansion portion 111 and the tensioning member 22 are provided with tensioning channels 21, which are arranged along the axis of the pipe 10. The prestressed steel strands 30 are passed through the tensioning channels 21. During the tensioning of the prestressed steel strands 30, the two pipes 10 are brought closer together and in close contact. Ultimately, the expansion portion 111 and the tensioning member 22 are pressed against each other, achieving a secure connection between the pipes 10.

[0037] Furthermore, if Figure 2 As shown, the above-mentioned tensioning member 22 includes an embedded part 221 and a connecting part 222, wherein the embedded part 221 is embedded in the pipeline 10, that is, the embedded part 221 is embedded in the pipeline 10 before the concrete of the pipeline 10 is poured, and is fixed to the pipeline 10 as the pipeline 10 is formed, thereby making the connection more reliable and enabling the tensioning member 22 to be firmly fixed to the pipeline 10; the connecting part 222 is connected to the embedded part 221 and is provided with a tensioning channel 21, which facilitates the installation of the connecting part 222 on the pipeline 10 after the pipeline 10 is transported to the designed position, making the pipeline 10 more convenient to transport and install, and at the same time avoiding damage to the tensioning member 22 during transportation or installation.

[0038] Normally, a steel mesh (not shown) is provided in the wall of the pipe 10 cast with concrete; further, the embedded part 221 is connected to the steel mesh of the pipe 10, which can firmly fix the embedded part 221 at the set position of the pipe 10, preventing it from shifting during the casting process of the pipe 10, thereby ensuring the positioning accuracy of the embedded part 221; at the same time, the embedded part 221 is connected to the steel mesh of the pipe 10, so that the steel mesh and the embedded part 221 are subjected to force together, thereby improving the rigidity and reliability of the tensioning member 22, being able to better resist the tension formed by the prestressed steel strand 30, and providing a reliable basis for applying prestress to the prestressed steel strand 30.

[0039] Furthermore, if Figure 3 As shown, the embedded part 221 is a sleeve, which is arranged along the radial direction of the pipe 10, with one end flush with the outer wall of the pipe 10, and the inner wall of the sleeve is provided with threads; the tensioning member 22 is provided with a threaded rod that matches the sleeve, and the tensioning channel 21 of the connecting member 222 is arranged perpendicular to the threaded rod and passes through the tensioning member 22; when the threaded rod is screwed into the sleeve, the tensioning channel 21 extends along the axis of the pipe 10, so that the distance between the connecting member 222 and the outer edge of the socket 12 is the same as the length of the step portion 112 along the axis of the pipe 10. Through this technical solution, a convenient connection between the embedded part 221 and the connecting member 222 is achieved, which facilitates the subsequent insertion and tensioning of the prestressed steel strand 30. When the socket 12 is inserted into the socket 11, the connecting member 222 abuts against the outward expansion portion 111, and the prestress provided by the prestressed steel strand 30 makes the connection between the two pipes 10 more stable.

[0040] Furthermore, if Figure 2 As shown, the tensioning member 22 is evenly arranged around the pipe 10. In this embodiment, the tensioning member 22 is evenly arranged around the pipe 10 near the socket 12. The outwardly expanded portion 111 of the socket 11 serves as the anchor 20. The tensioning channel 21 of the tensioning member 22 corresponds one-to-one with the tensioning channel 21 of the tensioning member 22, both extending along the axis of the pipe 10. After the prestressed steel strand 30 passes through the tensioning channel 21, it provides an opposite force parallel to the axis of the pipe 10 under the action of prestress. Through this technical solution, the prestressed steel strand 30 can be evenly arranged around the pipe 10, so that the pressure applied to each circumferential portion of the pipe 10 is the same, thereby improving the stability of the connection of the pipe 10.

[0041] In the present application, the number of tensioning members 22 is at least two, which can be set according to the diameter of the pipe 10 and is not limited here; when the cross-section of the pipe 10 is circular, the number of tensioning members 22 is preferably more than three.

[0042] In this embodiment, the number of tensioning members 22 is four, and the outward expansion portion 111 is provided with four corresponding tensioning channels 21 .

[0043] Furthermore, the tensioning channel 21 includes an anchoring channel 211, which is used to install the anchor 40. In this embodiment, the tensioning channel 21 passes through the connecting piece 222 and the expansion portion 111, and the prestressed steel strand 30 is passed through the tensioning channel 21. Both ends of the prestressed steel strand 30 are fixed to the tensioning channel 21 by the anchor 40. Generally, the shape of the anchor 40 is larger than the prestressed steel strand 30. Therefore, the tensioning channel 21 located at the connecting piece 222 and the tensioning channel 21 located at the expansion portion 111 are provided with an anchoring channel 211 at one end away from each other. The shape of the anchoring channel 211 is larger than other parts of the tensioning channel 21, and the anchor 40 can be installed in the anchoring channel 211. The provision of the anchoring channel 211 provides effective protection for the anchor 40, preventing the anchor 40 from being damaged by external factors during the use of the pipeline 10, ensuring that the prestressed steel strand 30 can continue to function, and providing a reliable guarantee for the stable connection of the pipeline 10.

[0044] Example 2

[0045] like Figure 4 As shown, a concrete pipe connection structure includes a pipe 10, an anchor 20 and a prestressed steel strand 30: the difference from Example 1 is that the two pipes 10 to be connected are connected at the flat ends 13, and the anchor 20 includes a tensioning member 22 arranged at both ends of the pipe 10, and the tensioning member 22 is aligned with the flat end 13.

[0046] The above-mentioned tensioning member 22 includes an embedded part 221 and a connecting part 222, wherein the embedded part 221 is embedded in the pipeline 10. During construction, the connecting line between the embedded parts 221 at both ends of the pipeline 10 is parallel to the axis of the pipeline 10; when the connecting part 222 is connected to the embedded part 221, one end of the connecting part 222 is aligned with the flat end 13, and the tensioning channel 21 extends along the axial direction of the pipeline 10; the prestressed steel strand 30 is passed through the tensioning channel 21, so that the two connecting parts 222 can abut under the action of prestress, and at the same time, the flat ends 13 of the two pipelines 10 can be docked.

[0047] Example 3

[0048] like Figure 5 As shown, a concrete pipe connection structure includes a pipe 10, an anchor 20 and a prestressed steel strand 30: the difference from Example 1 and Example 2 is that the two pipes 10 to be connected are connected through a tongue and groove 14, and the anchor 20 includes a tensioning member 22 arranged at both ends of the pipe 10, wherein the tensioning member 22 at one end is aligned with the outer edge of the pipe 10, and the tensioning member 22 at the other end is arranged on the inner side of the tongue and groove 14 and aligned with the tongue and groove 14.

[0049] The above-mentioned tensioning member 22 includes an embedded part 221 and a connecting part 222, wherein the embedded part 221 is embedded in the pipeline 10. During construction, the connecting line between the embedded parts 221 at both ends of the pipeline 10 is parallel to the axis of the pipeline 10; when the connecting part 222 is connected to the embedded part 221, one end of the connecting part 222 is aligned with the flat end 13, and the tensioning channel 21 extends along the axial direction of the pipeline 10; the prestressed steel strand 30 is passed through the tensioning channel 21, so that the two connecting parts 222 can abut under the action of prestress, and at the same time, the tongue and groove 14 of the two pipelines 10 can be connected.

[0050] Example 4

[0051] A method for connecting a concrete pipe connection structure, which is applicable to the pipe connection structure in any of the above embodiments, specifically comprises the following steps:

[0052] S1, manufacturing the pipe 10 and the connecting piece 222, and pre-embedding the embedded piece 221 in the pipe 10;

[0053] Specifically, when the pipe 10 adopts a socket connection, the tensioning channel 21 of the outer expansion portion 111 thereof is pre-embedded in the concrete using a corrugated pipe. Preferably, the corrugated pipe and the embedded part 221 are both connected and fixed to the steel mesh of the pipe 10 to prevent them from shifting during the concrete pouring process; when positioning the embedded part 221 and the corrugated pipe, ensure that the connecting line between the two is parallel to the axis of the pipe 10;

[0054] The connecting piece 222 is preferably made of steel and is provided with a tensioning channel 21 running through it. During processing and manufacturing, the aperture of one end of the tensioning channel 21 is larger than that of other parts, forming an anchoring channel 211 to ensure that the anchoring channel 211 is adapted to the size of the anchor 40 to be used; at the same time, the threaded rod of the connecting piece 222 cooperates with the embedded part 221.

[0055] S2. Install the connector 222 on the embedded part 221; align and connect the ends of the two pipes 10 so that the tensioning channels 21 are in relative positions, ensuring that the line connecting the centers of the tensioning channels 21 is parallel to the axis of the pipes 10.

[0056] S3, installing prestressed steel strands 30 in the tensioning channels 21; a prestressed steel strand 30 is passed through every two opposing tensioning channels 21;

[0057] Specifically, the prestressed steel strands 30 should be subjected to anti-corrosion treatment before use.

[0058] S4, tighten the prestressed steel strand 30;

[0059] The prestressed steel strand 30 is tensioned by tensioning equipment, and tensioning can be performed at one end or at both ends. When the diameter of the pipe 10 is large, tensioning at both ends is preferably used, that is, the two ends of the prestressed steel strand 30 are respectively connected to the tensioning equipment. As the tensioning proceeds, the anchors 20 of the two pipes 10 are pressed against each other.

[0060] S5, tighten the prestressed steel strand 30;

[0061] Anchors 40 are installed in the tensioning channels 21 to seal the anchors.

[0062] By providing anchors and prestressed steel strands, this application can provide relative axial pressure to the two pipes to be connected, forcing the pipe ends to press against each other and ensuring the tightness of the pipe connection. This also improves the bending resistance of the pipe connection, making it less likely to deform or loosen under the influence of external factors such as uneven settlement, thereby improving the firmness and reliability of the pipe connection. By adopting the above-mentioned connection method, the pipe connection operation is simple and easy to control, the quality of the pipe connection is guaranteed, and the anchors and prestressed steel strands can effectively function, thereby making the pipe connection part have good bending resistance and stability.

[0063] The above embodiments of the present invention are described in detail. However, the above contents are only preferred embodiments of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A concrete pipe connection structure, characterized in that: It includes a pipe, an anchor and a prestressed steel strand: the anchor is arranged relative to the outer wall of the two pipes to be connected, and has a tensioning channel; the tensioning channel extends in a direction parallel to the axis of the pipe; the prestressed steel strand passes through the two tensioning channels, so that the anchors are pressed against each other to achieve the connection of the pipes.

2. The concrete pipe connection structure according to claim 1, characterized in that: The pipe socket connection has a socket and a spigot; the socket includes an outward expansion portion arranged on the outer wall and a step portion arranged on the inner wall, and the spigot cooperates with the step portion; the anchor includes the outward expansion portion and a tensioning member, and the tensioning member is arranged close to the spigot.

3. The concrete pipe connection structure according to claim 1, characterized in that: The pipeline is connected at a flat end, and the anchoring piece includes tensioning pieces arranged at both ends of the pipeline, and the tensioning pieces are aligned with the flat end.

4. The concrete pipe connection structure according to claim 1, characterized in that: The pipeline is connected through a tongue and groove, and the anchoring piece includes a tensioning piece arranged at both ends of the pipeline; the tensioning piece at one end is aligned with the outer edge of the pipeline; the tensioning piece at the other end is arranged on the inner side of the tongue and groove and aligned with the tongue and groove.

5. The concrete pipe connection structure according to any one of claims 2 to 4, characterized in that: The tensioning member includes an embedded member and a connecting member. The embedded member is embedded in the pipeline. The connecting member is connected to the embedded member and is provided with the tensioning channel.

6. The concrete pipe connection structure according to claim 5, characterized in that: The embedded part is a sleeve, which is arranged along the radial direction of the pipeline, and the tensioning member is provided with a threaded rod that matches the sleeve.

7. The concrete pipe connection structure according to any one of claims 2 to 4, characterized in that: The tensioning members are evenly arranged circumferentially on the pipeline.

8. The concrete pipe connection structure according to any one of claims 1 to 4, 6 and 7, characterized in that: The tensioning channel includes an anchoring channel, and the anchoring channel is used for installing an anchor.

9. The concrete pipe connection structure according to claim 5, characterized in that: The embedded parts are connected to the steel mesh of the pipeline.

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