Assembled cable trough structure for shield tunnel

Abstract

The utility model discloses an assembled cable trough structure for a shield tunnel, which relates to the technical field of high-speed rail shield tunnels, is arranged in a shield segment and comprises a plurality of U-shaped components spliced end to end, and the U-shaped components are arranged close to the inner wall of the segment and mounted above a box culvert strip beam. The U-shaped component and the box culvert strip beam are connected and fixed through bolts; an inverted T-shaped component is arranged in the U-shaped component, and a groove cover plate is arranged at the top of the U-shaped component; the T-shaped component and the groove cover plate are placed in the U-shaped component to form an assembled cable trough structure, the assembled cable trough structure can be combined and fixed with a box culvert strip beam below, the structure is simple and stable, rapid construction can be realized, a good wind pressure resistance effect in a high-speed railway shield tunnel can be achieved, operation safety can be effectively guaranteed, and the service life of the high-speed railway shield tunnel can be prolonged. And meanwhile, the T-shaped component is convenient to overhaul and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -speed rail shield tunnel technical field, concretely relates to a kind of assembled cable trough structure for shield tunnel. BACKGROUND

[0002] The main form of the current high-speed rail shield tunnel cable trough is a reinforced concrete cast-in-place structure, but the reinforced concrete cast-in-place structure has the problems of slow construction, poor appearance quality, serious on-site environmental pollution, and poor construction environment in the tunnel, long construction period, which makes it difficult to guarantee the quality of pouring construction, and the maintenance cost is also high in the later period. Especially for large-diameter high-speed rail shield tunnels, as the faster the speed, the greater the wind pressure, ordinary assembled cable troughs can only be applied to railway tunnels with a speed of ≤200 km / h, while large-diameter high-speed rail shield tunnels have a speed of more than 200 km / h. The ordinary assembled cable trough cannot meet the demand of wind pressure resistance in high-speed environment, and there is a safety hazard, which is difficult to ensure the safety of operation. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides an assembled cable trough structure for shield tunnel, which can be applied to the characteristics of large-diameter shield tunnel with high wind pressure, effectively meet the operation safety, and does not need to be poured, the construction is fast and convenient, and the installation is firm.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] An assembled cable trough structure for shield tunnel is arranged in a shield segment, comprising a plurality of U-shaped components connected end to end, the U-shaped components are arranged close to the inner wall of the segment and installed above the box culvert strip beam, the U-shaped components are fixed by bolt connection with the box culvert strip beam; the U-shaped component is provided with an inverted T-shaped component inside, and the top of the U-shaped component is provided with a groove cover plate.

[0006] As a further implementation, the adjacent U-shaped components are connected by a concave-convex tenon structure, which comprises a tenon and a mortise.

[0007] As a further implementation, a toothed plate is fixedly installed on one side of the U-shaped component, and a fixing bolt is arranged on the toothed plate for fixed connection with the box culvert strip beam, so as to improve the connection strength.

[0008] As a further implementation, the two vertical edges of the U-shaped component are asymmetric structures, and the side of the U-shaped component close to the inner wall of the segment is inclined to reduce the gap between the segment and improve the installation stability of the cable trough structure.

[0009] As a further implementation manner, mortar is poured between the U-shaped member and the inner wall of the pipe piece, used for filling gaps, improving the overall structural strength and the installation stability of the cable groove.

[0010] As a further implementation manner, the two vertical edges of the U-shaped member are provided with inner bending parts at the same height, and the inner bending parts on the two sides form inner holding grooves inside the U-shaped member, used for installing T-shaped members or groove cover plates.

[0011] As a further implementation manner, the inner holding grooves are provided with two first inner holding grooves and second inner holding grooves, the T-shaped members are arranged on the first inner holding grooves, and the groove cover plates are arranged on the second inner holding grooves.

[0012] As a further implementation manner, EPDM waterproof strips are arranged at the connecting end faces of adjacent U-shaped members, used for waterproofing between the prefabricated blocks.

[0013] As a further implementation manner, hoisting holes are arranged on the side surfaces of the U-shaped members, facilitating on-site construction.

[0014] As a further implementation manner, the bottom edge of the U-shaped member close to the pipe piece is provided with an arc-shaped groove, used for pouring high-strength mortar to increase the overall strength after installation.

[0015] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0016] 1. The utility model discloses a T-shaped member and a groove cover plate are arranged in the U-shaped member to form a spliced cable groove structure, which can be combined and fixed with the box culvert strip beam below, has simple and stable structure, can realize rapid construction, has good wind pressure resistance in the high-speed railway shield tunnel, and can effectively guarantee the operation safety.

[0017] 2. The U-shaped member is fixedly installed on the box culvert through bolt connection in the utility model, does not need to be cast on site, can effectively reduce the construction cost and improve the construction efficiency, and when the T-shaped member needs to be overhauled or replaced after long-time use, only the groove cover plate needs to be removed, so that the overhauling and maintenance are greatly facilitated.

[0018] 3. The plurality of U-shaped members are spliced and connected through the concave-convex tenon structure in the length direction in the utility model, have simple manufacturing process, efficient on-site construction, high stability after assembly, and can avoid structure loosening or component falling caused by large wind pressure. DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide further understanding of the present application, the schematic embodiments of the present application and the explanations thereof are used to explain the present application, and do not constitute improper limitation on the present application.

[0020] Figure 1 A front view of a local part for on-site installation of an embodiment of the present application;

[0021] Figure 2 A side view of a cable trough structure of an embodiment of the present application;

[0022] Figure 3 A front view of a cable trough structure of an embodiment of the present application;

[0023] Figure 4 A perspective view of a U-shaped component of an embodiment of the present application;

[0024] Figure 5 A plan view of a U-shaped component of an embodiment of the present application.

[0025] In the drawings: 1, U-shaped component; 2, T-shaped component; 3, groove cover plate; 4, toothed plate; 5, high-strength mortar; 6, segment; 7, EPDM waterstop; 8, tenon; 9, mortise; 10, fixing bolt; 11, hoisting hole; 12, first inner groove; 13, second inner groove. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as those ordinarily used by a person of ordinary skill in the art to which the present application belongs.

[0027] It should be noted that the terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or combination thereof. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0028] Embodiment one

[0029] In a typical embodiment of the present application, a spliced cable trough structure for a shield tunnel is provided, which is arranged in a shield segment, such as Figures 1-5As shown, it comprises a plurality of U-shaped members 1 spliced head-to-tail, which are arranged close to the inner wall of the pipe piece 6 and installed above the box culvert strip beam, and are fixed by bolt connection with the box culvert strip beam; the inside of the U-shaped member 1 is provided with an inverted T-shaped member 2, and the top of the U-shaped member 1 is provided with a groove cover plate 3.

[0030] Specifically, as shown in Figure 1 , the U-shaped member is arranged close to the inner wall of the pipe piece, and in the length direction of the pipe piece, a plurality of U-shaped members are spliced head-to-tail to form the main body of the cable trench structure. The inverted T-shaped member 2 is installed in the inside of each U-shaped member 1, thereby forming two passages for cables between the T-shaped member and the inner wall of the Y-shaped member. The top of the U-shaped member 1 is placed with a groove cover plate 3 for protecting the cables, and in the embodiment, the bottom surface of the groove cover plate is in contact with the T-shaped member, which is convenient for maintenance.

[0031] In the embodiment, as shown in Figure 2 , the adjacent U-shaped members 1 are connected through a concave-convex tenon structure, which comprises a tenon 8 and a mortise 9 matched with each other, and the tenon and the mortise are designed as isosceles trapezoids.

[0032] In the embodiment, as shown in Figure 1 , 3 , bolt holes are processed on the bottom edge of the U-shaped member 1, and the U-shaped member 1 is fixedly connected with the box culvert strip beam below through fixing bolts 10, which is convenient for on-site construction. In order to improve the connection strength of the U-shaped member, a tooth plate 4 is fixedly installed on one side of the bottom of the U-shaped member 1, and the bottom surface of the tooth plate 4 is also provided with fixing bolts 10 for fixed connection with the box culvert strip beam at the bottom, which can improve the stability of the installation of the cable trench structure.

[0033] Specifically, as shown in Figures 3-5 , the two vertical edges of the U-shaped member are asymmetric structures, wherein the side of the U-shaped member away from the pipe piece is arranged vertically, and the side of the U-shaped member close to the inner wall of the pipe piece is arranged obliquely, which can reduce the gap between the U-shaped member and the pipe piece and improve the installation stability of the cable trench structure. In the embodiment, high-strength mortar is injected between the U-shaped member 1 and the inner wall of the pipe piece 6 to fill the gap and improve the overall structural strength and the installation stability of the cable trench.

[0034] In order to realize the installation of the T-shaped member in the U-shaped member, in the embodiment, the inside of the two vertical edges of the U-shaped member is processed with an inner bending part at the same height, and the inner bending parts on the two sides form an inner holding groove in the inside of the U-shaped member for installing the T-shaped member or the groove cover plate. Specifically, as shown in Figure 4 , 5As shown, the inner groove is provided with two, respectively, the first inner groove 12 and the second inner groove 13, T-shaped component 2 is arranged on the first inner groove 12, the first inner groove 12 is arranged above the U-shaped component 1, and has a certain distance with the bottom wall of the U-shaped component. The lower space can be used for drainage to prevent the cable trench from being damp and thus shorten the service life of the cable. The groove cover plate 3 is arranged on the second inner groove 13, the second inner groove 13 is arranged on the top of the U-shaped component, and the depth is the same as the height of the groove cover plate, so that the top surface of the groove cover plate is flush with the top surface of the U-shaped component after covering the U-shaped component.

[0035] In the embodiment, as shown in the drawings, Figure 4 As shown, the connecting end face of the adjacent U-shaped component is provided with a three-element ethylene-propylene rubber waterstop 7 for structural waterproofing. The three-element ethylene-propylene rubber has good oxidation resistance, ozone resistance and corrosion resistance, and low cost.

[0036] In the embodiment, the U-shaped component is provided with a lifting hole 11 on the side face, which facilitates on-site construction.

[0037] In the embodiment, the bottom edge of the U-shaped component near the pipe piece is provided with an arc-shaped groove for pouring high-strength mortar after installation to increase the overall strength.

[0038] In the on-site installation of the embodiment, the U-shaped component is placed by using the mortar leveling box culvert beam and fixed by using bolts; then the T-shaped component and the groove cover plate are placed in sequence. The front and rear of the plurality of U-shaped components are spliced by using the concave-convex tenon structure, and the three-element ethylene-propylene rubber waterstop is placed between the structures for waterproofing.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Those skilled in the art should understand that the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An assembled cable trough structure for a shield tunnel, provided in a shield segment, characterized by, The utility model provides a box culvert structure, which comprises a plurality of U-shaped components spliced head to tail, the U-shaped components are arranged close to the inner wall of the pipe piece and are installed above the box culvert strip beam, the U-shaped components are fixed through bolt connection with the box culvert strip beam, the U-shaped components are internally provided with inverted T-shaped components, and the top of the U-shaped components is provided with a groove cover plate.

2. An assembled cable trough structure for a shield tunnel according to claim 1, wherein The adjacent U-shaped components are connected through a concave-convex tenon structure, and the concave-convex tenon structure comprises a tenon and a mortise.

3. An assembled cable trough structure for a shield tunnel according to claim 1, wherein A toothed plate is fixedly installed on one side of the bottom of the U-shaped component, and the toothed plate is provided with fixing bolts for fixed connection with the box culvert strip beam.

4. The segmental cable trough structure for a shield tunnel according to claim 1, wherein, The two vertical edges of the U-shaped component are asymmetric structures, and the side close to the inner wall of the pipe piece is arranged in an inclined manner.

5. An assembled cable trough structure for a shield tunnel according to claim 4, wherein Sand mortar is poured between the U-shaped component and the inner wall of the pipe piece.

6. An assembled cable trough structure for a shield tunnel according to claim 1, wherein The two vertical edges of the U-shaped component are provided with inner bent portions at the same height, and the inner bent portions on the two sides form inner supporting grooves in the U-shaped component.

7. An assembled cable trough structure for a shield tunnel according to claim 6, wherein The inner supporting grooves are provided with two first inner supporting grooves and second inner supporting grooves, the T-shaped component is arranged on the first inner supporting groove, the groove cover plate is arranged on the second inner supporting groove, and the second inner supporting groove is located at the top of the U-shaped component.

8. An assembled cable trough structure for a shield tunnel according to claim 1, wherein The connecting end faces of the adjacent U-shaped components are provided with EPDM (ethylene propylene diene monomer) waterstop strips.

9. An assembled cable trough structure for a shield tunnel according to claim 1, wherein The side surface of the U-shaped component is provided with a hoisting hole.

10. The segmental cable trough structure for a shield tunnel according to claim 1, wherein, The bottom edge of the U-shaped component close to the pipe piece is provided with an arc-shaped groove.

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