Anti-corrosion connecting structure for pipe joints of inland river immersed tunnel

Abstract

The utility model discloses an anti-corrosion connecting structure for pipe joints of an inland river immersed tunnel, and belongs to the technical field of immersed tunnel construction. The connecting structure comprises a steel strand, a first fixed end anchor ring, a second fixed end anchor ring, a steel pipe assembly, a steel strand sheath and a first self-adhesive rubber belt, wherein the first fixed end anchor ring and the second fixed end anchor ring are located at the two ends of the steel strand respectively. And a positioning lantern ring is arranged on the second fixed end anchor ring. The first fixed end anchor ring is arranged in the steel pipe assembly, and the steel strand, the second fixed end anchor ring and the positioning lantern ring are arranged in the steel pipe assembly in a pull-out mode. And the steel strand sheath is arranged between the steel strand and the positioning lantern ring. The first self-adhesive rubber belt is detachably wound on the steel strand sheath, and the first self-adhesive rubber belt is positioned at the end part of the positioning lantern ring so as to block a gap between the steel strand sheath and the positioning lantern ring. The anti-corrosion connecting structure for the pipe joints of the inland river immersed tunnel has good waterproof reliability and corrosion resistance, the safety of the connecting structure in the using process is improved, and the service life of the connecting structure is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of immersed tunnel construction technology, and in particular relates to an anti-corrosion connection structure for pipe sections of inland river immersed tunnels. Background Technology

[0002] The immersed tunnel method is a construction method for building tunnels underwater. Immersed tunnels are constructed by floating several prefabricated sections to the construction site and then sinking them one by one into a pre-dredged trench. The connecting structure is used to connect adjacent prefabricated sections. This connecting structure must withstand certain tensile, shear, and bending moments while ensuring the watertightness of the joints.

[0003] In response, Chinese Patent 200420081953.7 discloses a steel cable connection structure for pipe segment joints. This connection structure includes a steel cable body and fixed-end anchor rings at both ends of the cable body. The cable body has compression heads at both ends, and one end of the fixed-end anchor ring is equipped with a positioning collar. A connecting sleeve is fitted onto the outer wall of the positioning collar, which can create tensile constraints between adjacent pipe segments, preventing the pipe segment joint from opening under tension and compromising the waterproof reliability of the joint, and does not impose any additional constraints on the pipe segment joint. However, this connection structure lacks an anti-corrosion structure, resulting in susceptibility to corrosion, high maintenance costs, and a short service life. Summary of the Invention

[0004] In view of the shortcomings of the related technologies, the purpose of this utility model is to provide a corrosion-resistant connection structure for pipe sections of inland river immersed tunnels, so as to solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A corrosion-resistant connection structure for immersed tunnel sections in inland waterways includes steel strands, and a first fixed-end anchor ring and a second fixed-end anchor ring located at both ends of the steel strands, respectively. The second fixed-end anchor ring is provided with a positioning collar. The structure also includes:

[0007] The steel pipe assembly has a first fixed end anchor ring located inside the steel pipe assembly, and the steel strand, the second fixed end anchor ring, and the positioning collar are pull-out and located inside the steel pipe assembly.

[0008] Steel strand sheath, the steel strand sheath is placed between the steel strand and the positioning collar;

[0009] The first self-adhesive rubber tape is detachably wrapped around the steel strand sheath and is located at the end of the positioning collar to seal the gap between the steel strand sheath and the positioning collar.

[0010] In some embodiments, the steel pipe assembly includes a first steel pipe, a second steel pipe, and a third steel pipe connected in sequence, with the first steel pipe and a first fixed-end anchor ring located at the same end, and the third steel pipe and a second fixed-end anchor ring located at the same end.

[0011] In some embodiments, the steel pipe assembly further includes a first steel plate disposed at the end of the first steel pipe.

[0012] In some embodiments, the steel pipe assembly also includes a wooden plug, which is removably disposed at the end of the third steel pipe.

[0013] In some embodiments, the steel pipe assembly further includes a second steel plate and a third steel plate, the second steel plate being disposed at the connection between the first steel pipe and the second steel pipe, and the third steel plate being disposed at the connection between the second steel pipe and the third steel pipe.

[0014] In some embodiments, the second steel plate is provided with stiffening plates, and there are multiple stiffening plates distributed along the circumference of the second steel plate.

[0015] In some embodiments, the anti-corrosion connection structure of the immersed tunnel section in inland waterways also includes a connecting sleeve and a fourth steel pipe. The connecting sleeve is fitted onto the positioning collar, and the fourth steel pipe is located between the connecting sleeve and the steel pipe assembly. The fourth steel pipe is provided with an injection hole and an vent hole.

[0016] In some embodiments, the connecting sleeve is provided with a clamp, and a second self-adhesive rubber tape is wrapped around the end of the clamp.

[0017] In some embodiments, the anti-corrosion connection structure of the immersed tunnel section in inland waterways also includes a telescopic rubber tube, a telescopic rubber tube connecting clamp, and the telescopic rubber tube covering the connecting sleeve.

[0018] In some embodiments, the anti-corrosion connection structure of the immersed tunnel segment in inland waterways also includes heat shrinkable tape, which is wrapped around the connecting sleeve and the fourth steel pipe.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The anti-corrosion connection structure for immersed tunnel sections in inland waterways provided by this utility model has good waterproof reliability and corrosion resistance, which improves the safety of the connection structure during use and extends the service life of the connection structure.

[0021] 2. The steel pipe assembly of the anti-corrosion connection structure for immersed tunnel sections in inland waterways provided by this utility model includes a first steel pipe, a second steel pipe, and a third steel pipe connected in sequence. The end of the first steel pipe is provided with a first steel plate, and the end of the third steel pipe is plugged with a wooden plug, so that the connection structure is in a relatively closed space, preventing the intrusion of corrosive media, avoiding the accumulation of corrosive media and the occurrence of corrosion reaction, and achieving good anti-corrosion effect. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of one embodiment of the corrosion-resistant connection structure for immersed tunnel sections in inland waterways according to this utility model;

[0024] Figure 2 This is a schematic diagram of the clamp and the second self-adhesive rubber strip structure of one embodiment of the anti-corrosion connection structure for immersed tunnel sections in inland waterways according to this utility model;

[0025] Figure 3 This is a schematic diagram of the installation of an embodiment of the corrosion-resistant connection structure for immersed tunnel sections in inland waterways according to this utility model.

[0026] Figure 4 This is a schematic diagram of the steel pipe assembly structure of one embodiment of the anti-corrosion connection structure for immersed tunnel sections in inland waterways according to this utility model;

[0027] Figure 5 This is a schematic diagram of the second steel plate structure of one embodiment of the anti-corrosion connection structure for immersed tunnel sections in inland waterways according to this utility model.

[0028] In the picture:

[0029] 1. Steel strand; 2. First fixed end anchor ring; 3. Second fixed end anchor ring; 4. Positioning collar; 5. Steel pipe assembly; 51. First steel pipe; 52. Second steel pipe; 53. Third steel pipe; 54. First steel plate; 55. Wooden plug; 56. Second steel plate; 561. Stiffening plate; 57. Third steel plate; 6. Steel strand sheath; 7. First self-adhesive rubber tape; 8. Connecting sleeve; 9. Fourth steel pipe; 91. Injection hole; 92. Vent hole; 10. Clamp; 11. Second self-adhesive rubber tape; 12. Expandable rubber tube; 13. Heat shrink tape. Detailed Implementation

[0030] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0032] 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 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.

[0033] See appendix Figures 1 to 5 This paper presents a schematic embodiment of the anti-corrosion connection structure for immersed tunnel sections in inland waterways proposed in this utility model. The anti-corrosion connection structure for immersed tunnel sections in inland waterways consists of a steel strand 1, a first fixed end anchor ring 2 and a second fixed end anchor ring 3 located at both ends of the steel strand 1, a steel pipe assembly 5, a steel strand sheath 6, and a first self-adhesive rubber strip 7.

[0034] The second fixed-end anchor ring 3 is provided with a positioning collar 4, which is close to one end of the second fixed-end anchor ring 3. The first fixed-end anchor ring 2 is located inside the steel pipe assembly 5, and the steel strand 1, the second fixed-end anchor ring 3, and the positioning collar 4 are pullable and installed inside the steel pipe assembly 5. When connected and used, the steel strand 1, the second fixed-end anchor ring 3, and the positioning collar 4 are pulled out of the steel pipe assembly 5.

[0035] A steel strand sheath 6 is disposed between the steel strand 1 and the positioning collar 4, and the steel strand sheath 6 is used to protect the steel strand 1. A first self-adhesive rubber tape 7 is detachably wrapped around the steel strand sheath 6, and the first self-adhesive rubber tape 7 is located at the end of the positioning collar 4 to seal the gap between the steel strand sheath 6 and the positioning collar 4.

[0036] The steel pipe assembly 5 includes a first steel pipe 51, a second steel pipe 52 and a third steel pipe 53 connected in sequence. The first steel pipe 51 is located at the same end as the first fixed end anchor ring 2, and the third steel pipe 53 is located at the same end as the second fixed end anchor ring 3.

[0037] The steel pipe assembly 5 also includes a first steel plate 54 and a wooden plug 55. The first steel plate 54 is located at the end of the first steel pipe 51, and the wooden plug 55 is detachably inserted at the end of the third steel pipe 53, so that the steel pipe assembly 5 forms a relatively closed space. The connecting structure is located within this closed space, preventing the intrusion of corrosive media, avoiding the accumulation of corrosive media and the occurrence of corrosion reactions, and improving the anti-corrosion effect. When connecting and using, the wooden plug 55 is removed, and then the steel strand 1, the second fixed end anchor ring 3, and the positioning collar 4 are pulled out of the steel pipe assembly 5.

[0038] To ensure a secure connection between the first steel pipe 51, the second steel pipe 52, and the third steel pipe 53, the steel pipe assembly 5 further includes a second steel plate 56 and a third steel plate 57. The second steel plate 56 is located at the connection between the first steel pipe 51 and the second steel pipe 52, and the third steel plate 57 is located at the connection between the second steel pipe 52 and the third steel pipe 53. In this embodiment, both the second steel plate 56 and the third steel plate 57 are annular steel plates.

[0039] To improve the load-bearing capacity of the second steel plate 56, multiple stiffening plates 561 are provided on the second steel plate 56, distributed circumferentially along the second steel plate 56. In this embodiment, four stiffening plates 561 are provided, which improves structural stability.

[0040] The anti-corrosion connection structure for the immersed tunnel sections in inland waterways also includes a connecting sleeve 8 and a fourth steel pipe 9. After pulling out the steel strand 1, the second fixed end anchor ring 3, and the positioning collar 4 from the steel pipe assembly 5, the connecting sleeve 8 and the fourth steel pipe 9 are installed. The connecting sleeve 8 is fitted onto the positioning collar 4, and the fourth steel pipe 9 is located between the connecting sleeve 8 and the steel pipe assembly 5. The fourth steel pipe 9 has an injection hole 91 and an vent hole 92. The connecting sleeve 8 is equipped with a clamp 10, and a second self-adhesive rubber tape 11 is wrapped around the end of the clamp 10. The second self-adhesive rubber tape 11 is wrapped to the design height, and then a telescopic rubber tube 12 is installed. The telescopic rubber tube 12 is connected to the clamp 10 to lock and cover the connecting sleeve 8.

[0041] To enhance corrosion resistance, in this embodiment, the corrosion-resistant connection structure of the immersed tunnel segment also includes heat-shrinkable tape 13, which covers the connecting sleeve 8 and the fourth steel pipe 9. The injection hole 91 and vent hole 92 on the fourth steel pipe 9 are used for grease injection. Specifically, the connecting sleeve 8 is first covered with heat-shrinkable tape 13, and then grease is injected into the cavity through the injection hole 91. Injection is stopped when grease continuously flows from the vent hole 92 for 10 seconds. Then, the fourth steel pipe 9 is covered with heat-shrinkable tape 13, which also covers the injection hole 91 and vent hole 92 to prevent grease leakage.

[0042] In the above illustrative embodiments, the anti-corrosion connection structure of the inland river immersed tunnel segment has good waterproof reliability and corrosion resistance, which improves the safety of the connection structure during use and extends the service life of the connection structure.

[0043] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0044] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A corrosion-resistant connection structure for immersed tunnel sections in inland waterways, comprising steel strands, and a first fixed-end anchor ring and a second fixed-end anchor ring located at both ends of the steel strands, wherein the second fixed-end anchor ring is provided with a positioning collar, characterized in that... Also includes: A steel pipe assembly, wherein the first fixed end anchor ring is disposed inside the steel pipe assembly, and the steel strand, the second fixed end anchor ring and the positioning collar are pull-out disposed inside the steel pipe assembly; A steel strand sheath, wherein the steel strand sheath is disposed between the steel strand and the positioning collar; A first self-adhesive rubber tape is detachably wrapped around the steel strand sheath and is located at the end of the positioning collar to seal the gap between the steel strand sheath and the positioning collar.

2. The anti-corrosion connection structure for immersed tunnel sections in inland waterways according to claim 1, characterized in that, The steel pipe assembly includes a first steel pipe, a second steel pipe, and a third steel pipe connected in sequence. The first steel pipe and the first fixed end anchor ring are located at the same end, and the third steel pipe and the second fixed end anchor ring are located at the same end.

3. The corrosion-resistant connection structure for immersed tunnel sections in inland waterways according to claim 2, characterized in that, The steel pipe assembly also includes a first steel plate, which is disposed at the end of the first steel pipe.

4. The anti-corrosion connection structure for immersed tunnel sections in inland waterways according to claim 3, characterized in that, The steel pipe assembly also includes a wooden plug, which is removably inserted into the end of the third steel pipe.

5. The corrosion-resistant connection structure for immersed tunnel sections in inland waterways according to claim 2, characterized in that, The steel pipe assembly further includes a second steel plate and a third steel plate, wherein the second steel plate is disposed at the connection between the first steel pipe and the second steel pipe, and the third steel plate is disposed at the connection between the second steel pipe and the third steel pipe.

6. The anti-corrosion connection structure for immersed tunnel sections in inland waterways according to claim 5, characterized in that, The second steel plate is provided with stiffening plates, and there are multiple stiffening plates distributed along the circumference of the second steel plate.

7. The anti-corrosion connection structure for immersed tunnel sections in inland waterways according to claim 1, characterized in that, It also includes a connecting sleeve and a fourth steel pipe. The connecting sleeve is sleeved on the positioning collar, and the fourth steel pipe is located between the connecting sleeve and the steel pipe assembly. The fourth steel pipe is provided with an injection hole and an exhaust hole.

8. The anti-corrosion connection structure for immersed tunnel sections in inland waterways according to claim 7, characterized in that, The connecting sleeve is provided with a clamp, and a second self-adhesive rubber tape is wrapped around the end of the clamp.

9. The anti-corrosion connection structure for immersed tunnel sections in inland waterways according to claim 8, characterized in that, It also includes a retractable rubber tube, which is connected to the clamp and covers the connecting sleeve.

10. The anti-corrosion connection structure for immersed tunnel sections in inland waterways according to claim 7, characterized in that, It also includes heat shrinkable tape, which is wrapped around the connecting sleeve and the fourth steel pipe.

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