Compression-resistant arch structure for concrete duct piece

Abstract

The utility model relates to the technical field of concrete pipe pieces, and discloses a compression-resistant arch structure for a concrete pipe piece, which comprises a pipe piece main body, the pipe piece main body is composed of refractory concrete and a reinforcement cage frame, the refractory concrete is arranged on the outer side of the reinforcement cage frame, a first transverse frame is arranged at the front end in the reinforcement cage frame, and a second transverse frame is arranged at the rear end in the reinforcement cage frame. A second transverse frame is arranged at the rear end of the interior of the reinforcement cage frame. According to the compression-resistant arch structure for the concrete pipe piece, the inner frame composed of the lower connecting rod, the upper connecting rod, the first transverse frame and the second transverse frame is arranged on the inner side of the reinforcement cage frame in the arch structure for the concrete pipe piece, and the lower connecting rod, the upper connecting rod, the first transverse frame and the second transverse frame are arranged, so that an inner supporting framework of the arch structure is increased; the inner side of the segment arch structure can be further supported and strengthened, the strength of the compression resistance structure in the arch structure is improved, and the problem that compression resistance strengthening cannot be conveniently conducted on the interior of the concrete segment arch structure is solved.

Description

Technical Field

[0001] This utility model relates to the field of concrete tunnel segment technology, specifically to a compression arch structure for concrete tunnel segments. Background Technology

[0002] Concrete arch tunnel segments are a type of precast concrete lining segment, mainly used in shield tunnel construction as a permanent lining structure on the inner side of the tunnel. They play a role in resisting soil pressure, groundwater pressure, and some special loads. By adopting an arch structure, the pressure is more evenly distributed, which can reduce tunnel collapse and make the tunnel more robust and safe. At the same time, the arch structure also acts as a self-weight frame, which can absorb and disperse underground support forces and improve the seismic performance of the tunnel structure. It is widely used in tunnel construction.

[0003] However, in actual use, the inner skeleton of the concrete segment arch structure is largely unsupported, and under high external pressure, the support is insufficient, which can easily cause deformation in the outer part of the segment. Therefore, there are shortcomings and no measures are available to strengthen the internal compressive strength of the concrete segment arch structure.

[0004] Now, a novel compression arch structure for concrete segments is proposed to address the above-mentioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a compression-resistant arch structure for concrete segments, so as to solve the problem mentioned in the background art of the inconvenience of strengthening the internal compression resistance of the concrete segment arch structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a compression arch structure for concrete tunnel segments, comprising a tunnel segment body, the tunnel segment body being composed of refractory concrete and a reinforcing cage, the outer side of the reinforcing cage being provided with refractory concrete, a first crossbeam being provided at the front end of the inner side of the reinforcing cage, a second crossbeam being provided at the rear end of the inner side of the reinforcing cage, an upper connecting rod being provided at the top of the first and second crossbeams, and a lower connecting rod being provided at the bottom of the first and second crossbeams.

[0007] As a further technical solution of this utility model, the top end of the upper connecting rod is welded and fixed to the top end inside the steel cage, and the two ends of the bottom of the upper connecting rod are welded and fixed to the top ends of the first crossbeam and the second crossbeam, respectively.

[0008] As a further technical solution of this utility model, the bottom end of the lower connecting rod is welded and fixed to the bottom end inside the steel cage, and the two ends of the top of the lower connecting rod are welded and fixed to the bottom ends of the first crossbeam and the second crossbeam, respectively.

[0009] As a further technical solution of this utility model, the upper connecting rod is provided in multiple sets at equal intervals at the top ends of the first and second crossbeams, and the lower connecting rod is provided in multiple sets at equal intervals at the bottom end of the second crossbeam.

[0010] As a further technical solution of this utility model, a positioning block is fixed at the middle position on the left side of the main body of the pipe segment, and a positioning slot is provided at the middle position on the right side of the main body of the pipe segment, with the top and bottom ends of the positioning slot penetrating the interior of the top and bottom ends of the main body of the pipe segment, respectively.

[0011] As a further technical solution of this utility model, the top of the tube segment body is provided with an outer cover, and the two ends of the top of the outer cover are respectively provided with insertion holes, and the insertion holes are provided with mounting bolts. The two ends of the top of the tube segment body are respectively fixed with reserved sleeves.

[0012] As a further technical solution of this utility model, the insertion holes are provided in three sets at equal intervals at both ends of the top of the outer cover. The insertion holes penetrate the interior of the outer cover, and the interior of the reserved sleeve is provided with internal threads. The bottom end of the mounting bolt penetrates the interior of the insertion hole and is threadedly connected to the interior of the reserved sleeve.

[0013] As a further technical solution of this utility model, a reserved sleeve 2 is fixed inside the middle position of the bottom end of the segment body, and an installation groove 1 is opened at both ends of the bottom left side of the segment body, and an installation groove 2 is opened at both ends of the bottom right side of the segment body.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the anti-compression arch structure for concrete segments not only facilitates the internal anti-compression strengthening of the concrete segment arch structure and the external protection of the concrete segment arch structure, but also facilitates the auxiliary positioning during the installation of the segment arch structure.

[0015] By setting up a segment body, refractory concrete, steel cage, lower connecting rod, upper connecting rod, cross frame one and cross frame two, and by setting an inner frame composed of lower connecting rod, upper connecting rod, cross frame one and cross frame two inside the steel cage inside the concrete segment arch structure, the internal support skeleton of the arch structure can be increased, the inner side of the segment arch structure can be further supported and strengthened, and the internal compressive strength of the arch structure can be improved.

[0016] By setting up positioning blocks, segment bodies, and positioning slots, with positioning blocks and positioning slots set on both sides of the segment body, during the installation of the concrete segment arch structure, the positioning blocks on one set of segment bodies can be inserted into the positioning slots inside the other set of segment bodies. The positioning blocks and positioning slots can provide auxiliary positioning and limit between the two sets of positioning blocks, avoid relative displacement between the two sets of segment bodies, and improve the accuracy of installation.

[0017] With the structure consisting of a main body of the tunnel segment, an outer cover, a pre-reserved sleeve, mounting bolts, and insertion holes, the arch structure is used with the outer cover fixed to the outside of the main body of the tunnel segment by mounting bolts. The outer cover can provide auxiliary protection for the outside of the main body of the tunnel segment, reducing external damage during transportation and installation. Attached Figure Description

[0018] Figure 1 This is a frontal cross-sectional view of the present invention.

[0019] Figure 2 This is a top view schematic diagram of the cross frame structure of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the main body of the tunnel segment of this utility model;

[0021] Figure 4 This is a partial cross-sectional view of the outer cover of this utility model.

[0022] In the diagram: 1. Positioning block; 2. Segment body; 3. Refractory concrete; 4. Reinforcing cage; 5. Lower connecting rod; 6. Outer cover; 7. Upper connecting rod; 8. Horizontal frame one; 9. Reserved sleeve one; 10. Horizontal frame two; 11. Mounting bolt; 12. Insertion hole; 13. Mounting groove one; 14. Reserved sleeve two; 15. Mounting groove two; 16. Positioning slot. Detailed Implementation

[0023] 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 embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides an embodiment: a compression arch structure for concrete pipe segments, including a pipe segment body 2, the pipe segment body 2 is composed of refractory concrete 3 and a steel cage 4, the outside of the steel cage 4 is provided with refractory concrete 3, the front end of the inside of the steel cage 4 is provided with a first crossbeam 8, the rear end of the inside of the steel cage 4 is provided with a second crossbeam 10, the top of the first crossbeam 8 and the second crossbeam 10 is provided with an upper connecting rod 7, and the bottom end of the first crossbeam 8 and the second crossbeam 10 is provided with a lower connecting rod 5.

[0025] The top end of the upper connecting rod 7 is welded and fixed to the top end inside the steel cage 4. The two ends of the bottom of the upper connecting rod 7 are welded and fixed to the top ends of the first cross frame 8 and the second cross frame 10, respectively. The bottom end of the lower connecting rod 5 is welded and fixed to the bottom end inside the steel cage 4. The two ends of the top of the lower connecting rod 5 are welded and fixed to the bottom ends of the first cross frame 8 and the second cross frame 10, respectively. Multiple sets of upper connecting rods 7 are equally spaced at the top ends of the first cross frame 8 and the second cross frame 10, and multiple sets of lower connecting rods 5 are equally spaced at the bottom ends of the second cross frame 10.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, by setting an inner frame consisting of a lower connecting rod 5, an upper connecting rod 7, a first crossbeam 8, and a second crossbeam 10 on the inner side of the steel cage 4 inside the concrete segment arch structure, the internal support skeleton of the arch structure is increased by setting the lower connecting rod 5, the upper connecting rod 7, the first crossbeam 8, and the second crossbeam 10, which can further support and strengthen the inner side of the segment arch structure and improve the compressive strength of the arch structure.

[0027] A positioning block 1 is fixed at the middle position on the left side of the main body 2 of the segment, and a positioning slot 16 is provided at the middle position on the right side of the main body 2 of the segment, with the top and bottom ends of the positioning slot 16 penetrating the interior of the top and bottom ends of the main body 2 of the segment, respectively.

[0028] Specifically, such as Figure 1 and Figure 3 As shown, during the installation of the concrete segment arch structure, the positioning blocks 1 on one set of segment bodies 2 can be inserted into the positioning slots 16 inside another set of segment bodies 2. The positioning blocks 1 and positioning slots 16 can provide auxiliary positioning and limit between the two sets of positioning blocks 1, thus preventing relative displacement between the two sets of segment bodies 2.

[0029] The top of the segment body 2 is provided with an outer cover 6, and the two ends of the top of the outer cover 6 are respectively provided with insertion holes 12, and the insertion holes 12 are provided with mounting bolts 11. The two ends of the top of the segment body 2 are respectively fixed with reserved sleeves 9. The insertion holes 12 are provided with three sets at equal intervals at the two ends of the top of the outer cover 6. The insertion holes 12 penetrate the interior of the outer cover 6. The interior of the reserved sleeves 9 is provided with internal threads. The bottom end of the mounting bolts 11 penetrates the interior of the insertion holes 12 and is threadedly connected to the interior of the reserved sleeves 9.

[0030] Specifically, such as Figure 1 and Figure 4 As shown, an outer cover 6 is installed and fixed on the outside of the segment body 2 by mounting bolts 11. The outer cover 6 can provide auxiliary protection for the outside of the segment body 2, which can reduce external damage during transportation and installation.

[0031] A pre-reserved sleeve 14 is fixed inside the middle position of the bottom end of the segment body 2. The two ends of the bottom left side of the segment body 2 are respectively provided with mounting groove 13, and the two ends of the bottom right side of the segment body 2 are respectively provided with mounting groove 25.

[0032] Working principle: In use, this utility model has an inner frame consisting of a lower connecting rod 5, an upper connecting rod 7, a first crossbeam 8, and a second crossbeam 10, which is set inside the steel cage 4 inside the concrete segment arch structure. By setting the lower connecting rod 5, the upper connecting rod 7, the first crossbeam 8, and the second crossbeam 10, the internal support skeleton of the arch structure is increased, which can further support and strengthen the compressive strength of the inner side of the segment arch structure. When the concrete segment arch structure is installed, the positioning blocks 1 on one set of segment bodies 2 can be inserted into the positioning slots 16 inside another set of segment bodies 2. The positioning blocks 1 and the positioning slots 16 can be used to assist in positioning and limiting the two sets of positioning blocks 1, avoiding relative displacement between the two sets of segment bodies 2. In addition, when the arch structure is in use, an outer cover 6 is installed and fixed on the outside of the segment body 2 by mounting bolts 11. The outer cover 6 can provide auxiliary cover protection for the outside of the segment body 2.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A compression arch structure for concrete tunnel segments, comprising a tunnel segment body (2), characterized in that: The main body (2) of the segment is composed of refractory concrete (3) and steel cage (4). Refractory concrete (3) is provided on the outside of the steel cage (4). A cross frame (8) is provided at the front end of the steel cage (4). A cross frame (10) is provided at the rear end of the steel cage (4). An upper connecting rod (7) is provided at the top of the cross frame (8) and the cross frame (10). A lower connecting rod (5) is provided at the bottom of the cross frame (8) and the cross frame (10).

2. The anti-compression arch structure for concrete segments according to claim 1, characterized in that: The top end of the upper connecting rod (7) is welded and fixed to the top end inside the steel cage (4), and the two ends of the bottom of the upper connecting rod (7) are welded and fixed to the top ends of the first cross frame (8) and the second cross frame (10) respectively.

3. The anti-compression arch structure for concrete segments according to claim 1, characterized in that: The bottom end of the lower connecting rod (5) is welded and fixed to the bottom end inside the steel cage (4), and the two ends of the top of the lower connecting rod (5) are welded and fixed to the bottom ends of the first cross frame (8) and the second cross frame (10) respectively.

4. The anti-compression arch structure for concrete segments according to claim 1, characterized in that: The upper connecting rod (7) is provided in multiple sets at equal intervals at the top of the first crossbeam (8) and the second crossbeam (10), and the lower connecting rod (5) is provided in multiple sets at equal intervals at the bottom of the second crossbeam (10).

5. The anti-compression arch structure for concrete segments according to claim 1, characterized in that: A positioning block (1) is fixed at the middle position on the left side of the main body (2), and a positioning slot (16) is provided at the middle position on the right side of the main body (2), with the top and bottom of the positioning slot (16) penetrating the interior of the top and bottom of the main body (2) respectively.

6. The anti-compression arch structure for concrete segments according to claim 1, characterized in that: The top of the tube body (2) is provided with an outer cover (6), and the two ends of the top of the outer cover (6) are respectively provided with insertion holes (12), and the inside of the insertion holes (12) is provided with mounting bolts (11), and the inside of the two ends of the top of the tube body (2) is respectively fixed with a reserved sleeve (9).

7. A compression arch structure for concrete segments according to claim 6, characterized in that: The insertion holes (12) are provided in three sets at equal intervals at both ends of the top of the outer cover (6). The insertion holes (12) penetrate the interior of the outer cover (6). The interior of the reserved sleeve (9) is provided with internal threads. The bottom end of the mounting bolt (11) penetrates the interior of the insertion holes (12) and is threadedly connected to the interior of the reserved sleeve (9).

8. A compression arch structure for concrete segments according to claim 6, characterized in that: The inner part of the bottom middle position of the segment body (2) is fixed with a reserved sleeve 2 (14), and the two ends of the bottom left side of the segment body (2) are respectively provided with an installation groove 1 (13), and the two ends of the bottom right side of the segment body (2) are respectively provided with an installation groove 2 (15).

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