Pipe row and steel pipe connecting structure for tunnel advanced pipe roof construction

Abstract

The utility model discloses a pipe row and steel pipe connecting structure for tunnel advanced pipe roof construction. The pipe row and steel pipe connecting structure comprises a vault pipe roof assembly and two lock catch assemblies. The vault pipe roof assembly comprises a first steel pipe, a second steel pipe and a connecting piece. The first steel pipe and the second steel pipe are oppositely arranged, and the first steel pipe is fixedly connected with the second steel pipe through a connecting piece. The first steel pipe is rotationally connected with the third steel pipe through one lock catch assembly. The second steel pipe is rotationally connected with the fourth steel pipe through the other lock catch assembly. The technical problems that in the prior art, when advanced pipe roofing construction is conducted, the jacking precision of pipe roofing supporting cannot be guaranteed, the angle of the arch top is difficult to control, jacking is difficult in the construction process, and the deviation rectifying difficulty is large are solved. The technical effects that the jacking resistance is reduced, the pipe roof jacking precision is improved, and the deviation rectifying difficulty is reduced are achieved.

Description

Technical Field

[0001] This application relates to the field of tunnel construction technology, and in particular to a steel pipe connection structure for tunnel advanced pipe curtain construction. Background Technology

[0002] Currently, steel pipes are generally used as the support structure for advanced pipe jacking construction in tunnel engineering. A certain tunnel requires a 157.5m jacking length in one direction (the longest in China), and it is located in a loess geological structure. The existing maximum jacking length of pipe jacking is approximately 130m.

[0003] However, the existing interlocking connection method between steel pipes cannot guarantee the jacking accuracy of the pipe curtain support structure, and the angle of the arch top is difficult to control, which makes jacking difficult during construction. Therefore, it is urgent to design a pipe-pile steel pipe connection structure that is easy to construct. Utility Model Content

[0004] This application provides a steel pipe connection structure for tunnel pre-jacking construction, solving the technical problems in the prior art where the jacking accuracy of the pipe jacking support cannot be guaranteed, the angle of the arch top is difficult to control, jacking is difficult during construction, and correction is challenging. It achieves the technical effects of reducing jacking resistance, improving pipe jacking accuracy, and reducing the difficulty of correction.

[0005] This utility model provides a steel pipe connection structure for tunnel pre-construction pipe jacking, including an arched pipe jacking assembly and two locking assemblies. The arched pipe jacking assembly includes a first steel pipe, a second steel pipe, and a connector. The first steel pipe and the second steel pipe are arranged opposite to each other, and the first steel pipe is fixedly connected to the second steel pipe through the connector. The first steel pipe is rotatably connected to a third steel pipe through one of the locking assemblies. The second steel pipe is rotatably connected to a fourth steel pipe through the other locking assembly.

[0006] In one possible implementation, the locking assembly includes a first lock and a second lock; the first lock and the second lock are rotatably connected; one of the first locks and one of the second locks are respectively connected to the sides of the first steel pipe and the third steel pipe that are close to each other; another first lock and another second lock are respectively connected to the sides of the second steel pipe and the fourth steel pipe that are close to each other.

[0007] In one possible implementation, the locking assembly further includes a steel plate and reinforcing ribs; the second locking buckle is connected to a corresponding steel pipe via the steel plate; the reinforcing ribs are provided on the steel plate.

[0008] In one possible implementation, a rubber pad is also provided between the first latch and the second latch.

[0009] In one possible implementation, the system further includes a plurality of grouting pipes; one side of the plurality of grouting pipes is connected to a locking assembly; and the other side of the plurality of grouting pipes is connected to a steel pipe corresponding to the locking assembly.

[0010] In one possible implementation, the grouting pipe has a plurality of grouting holes, which are spaced apart along the length of the grouting pipe.

[0011] In one possible implementation, the plurality of grouting holes are spirally distributed along the length of the grouting pipe.

[0012] One or more technical solutions provided in this application have at least the following technical effects:

[0013] This utility model embodiment employs a steel pipe connection structure for tunnel pre-jacking pipe jacking construction, including an arch-top pipe jacking assembly and two locking assemblies. The arch-top pipe jacking assembly includes a first steel pipe, a second steel pipe, and a connector. The first and second steel pipes are arranged opposite to each other, and the first steel pipe is fixedly connected to the second steel pipe via the connector. The first steel pipe is rotatably connected to a third steel pipe via one of the locking assemblies; the second steel pipe is rotatably connected to a fourth steel pipe via the other locking assembly. The connector can fix the first and second steel pipes together, preventing angular deviation and reducing the difficulty of correction. Furthermore, the locking assemblies enable angle adjustment during pipe jacking construction. The cooperation between the connector and the locking assemblies achieves a more flexible and convenient construction effect. This application solves the technical problems in the prior art where the jacking accuracy of pipe jacking support cannot be guaranteed, the angle of the arch top is difficult to control, jacking is difficult during construction, and correction is difficult. It achieves the technical effects of reducing jacking resistance, improving pipe jacking accuracy, and reducing the difficulty of correction. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of a steel pipe connection structure for tunnel pre-jacking pipe jacking construction provided in this application embodiment;

[0016] Figure 2 A schematic diagram of the dome-shaped tube curtain assembly provided in an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the locking assembly provided in an embodiment of this application.

[0018] Icons: 1-Archive pipe curtain assembly; 11-First steel pipe; 12-Second steel pipe; 13-Connector; 2-Locking assembly; 21-First locking; 22-Second locking; 23-Steel plate; 24-Reinforcing rib; 25-Rubber pad; 3-Third steel pipe; 4-Fourth steel pipe; 5-Grouting pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0020] In the description of the embodiments 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 the embodiments of this utility model and simplifying the description. They 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. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" 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; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0021] This utility model embodiment provides a steel pipe connection structure for tunnel advanced pipe curtain construction, such as... Figure 1-3 As shown, the structure includes an arched pipe curtain assembly 1 and two locking assemblies 2. The arched pipe curtain assembly 1 includes a first steel pipe 11, a second steel pipe 12, and a connector 13. The first steel pipe 11 and the second steel pipe 12 are arranged opposite to each other, and the first steel pipe 11 is fixedly connected to the second steel pipe 12 through the connector 13. The first steel pipe 11 is rotatably connected to a third steel pipe 3 through one of the locking assemblies 2. The second steel pipe 12 is rotatably connected to a fourth steel pipe 4 through the other locking assembly 2.

[0022] For example, the steel plate 23 is fixedly connected to the corresponding steel pipe by welding, and the reinforcing ribs 24 are arranged at intervals along the length of the steel plate 23, with a quantity of 2-4, to enhance the bending resistance of the connection structure.

[0023] For example, two arched tube curtain assemblies 1 are provided, and the two arched tube curtain assemblies 1 are rotatably connected by a locking assembly 2.

[0024] For example, the number of steel pipes in the pipe curtain assembly is not limited to two, but can be multiple steel pipes, all of which are connected by connector 13.

[0025] For example, the connector 13 is an H-shaped steel component, whose web is connected to the side walls of the first steel pipe 11 and the second steel pipe 12 respectively by high-strength bolts, and the flange portion is embedded inside the steel pipe to improve the overall rigidity.

[0026] In the embodiments of this application, such as Figure 1-3 As shown, the locking assembly 2 includes a first locking buckle 21 and a second locking buckle 22; the first locking buckle 21 and the second locking buckle 22 are rotatably connected; one of the first locking buckles 21 and one of the second locking buckles 22 are respectively connected to the side of the first steel pipe 11 and the third steel pipe 3 that are close to each other; the other first locking buckle 21 and the other second locking buckle 22 are respectively connected to the side of the second steel pipe 12 and the fourth steel pipe 4 that are close to each other.

[0027] For example, the first latch 21 is made of a Φ76×8 perforated steel pipe, and the second latch 22 is made of a Φ102×8 seamless steel pipe.

[0028] In the embodiments of this application, such as Figure 1-3 As shown, the locking assembly 2 also includes a steel plate 23 and a reinforcing rib 24; the second locking buckle 22 is connected to the corresponding steel pipe through the steel plate 23; the steel plate 23 is provided with a reinforcing rib 24.

[0029] For example, a steel plate 23 with a thickness of 8mm is used, and the reinforcing rib 24 has an axial angle of 45° with the steel pipe.

[0030] In the embodiments of this application, such as Figure 1-3 As shown, a rubber pad 25 is also provided between the first latch 21 and the second latch 22.

[0031] For example, the rubber pad 25 is 5-10mm thick and made of neoprene rubber. Its surface has anti-slip texture to increase the frictional resistance between the first locking buckle 21 and the second locking buckle 22, while also adapting to minor deformations during tunnel construction.

[0032] In the embodiments of this application, such as Figure 1-3 As shown, it also includes multiple grouting pipes 5; one side of the multiple grouting pipes 5 is connected to the locking assembly 2; the other side of the multiple grouting pipes 5 is connected to the steel pipe corresponding to the locking assembly 2.

[0033] In the embodiments of this application, such as Figure 1-3 As shown, the grouting pipe 5 has multiple grouting holes, which are spaced apart along the length of the grouting pipe 5.

[0034] In the embodiments of this application, such as Figure 1-3 As shown, multiple grouting holes are spirally distributed along the length of the grouting pipe 5.

[0035] For example, the grouting pipe 5 has a diameter of 20-50mm and is made of seamless steel pipe, which is welded and fixed to the locking assembly 2.

[0036] For example, the diameter of the grouting hole is 8-15mm, the spacing between adjacent grouting holes is 100-300mm, and the pitch of the spiral distribution is 200-500mm, so as to ensure that the grouting material is evenly diffused around the pipe and fills the gaps.

[0037] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0038] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A steel pipe connection structure for tunnel pre-jacking pipe draping construction, characterized in that, It includes a dome-shaped tube curtain assembly (1) and two locking assemblies (2); The arched pipe curtain assembly (1) includes a first steel pipe (11), a second steel pipe (12), and a connector (13); The first steel pipe (11) and the second steel pipe (12) are arranged opposite to each other, and the first steel pipe (11) is fixedly connected to the second steel pipe (12) through the connector (13); The first steel pipe (11) is rotatably connected to the third steel pipe (3) through one of the locking components (2); The second steel pipe (12) is rotatably connected to the fourth steel pipe (4) via another of the aforementioned locking components (2).

2. The steel pipe connection structure for tunnel pre-jacking pipe curtain construction according to claim 1, characterized in that, The locking assembly (2) includes a first lock (21) and a second lock (22); The first latch (21) and the second latch (22) are rotatably connected; One of the first latches (21) and one of the second latches (22) are respectively connected to the sides of the first steel pipe (11) and the third steel pipe (3) that are close to each other; Another first latch (21) and another second latch (22) are respectively connected to the side of the second steel pipe (12) and the fourth steel pipe (4) that are close to each other.

3. The steel pipe connection structure for tunnel pre-jacking pipe curtain construction according to claim 2, characterized in that, The locking assembly (2) also includes a steel plate (23) and reinforcing ribs (24); The second latch (22) is connected to the corresponding steel pipe via a steel plate (23); The steel plate (23) is provided with the reinforcing ribs (24).

4. The steel pipe connection structure for tunnel pre-jacking pipe curtain construction according to claim 2, characterized in that, A rubber pad (25) is also provided between the first latch (21) and the second latch (22).

5. The steel pipe connection structure for tunnel pre-jacking pipe curtain construction according to claim 1, characterized in that, It also includes multiple grouting pipes (5); One side of each of the grouting pipes (5) is connected to the locking assembly (2); the other side of each of the grouting pipes (5) is connected to the corresponding steel pipe of the locking assembly (2).

6. The steel pipe connection structure for tunnel pre-jacking pipe curtain construction according to claim 5, characterized in that, The grouting pipe (5) has multiple grouting holes, which are spaced apart along the length of the grouting pipe (5).

7. The steel pipe connection structure for tunnel pre-jacking pipe draping construction according to claim 6, characterized in that, The plurality of grouting holes are spirally distributed along the length of the grouting pipe (5).

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