Supporting structure of intersection between transverse passage and main tunnel of tunnel

Abstract

The utility model discloses a supporting structure of an intersection between a transverse channel and a main hole of a tunnel, which relates to the technical field of tunnel construction and comprises the transverse channel and the main hole of the tunnel, the transverse channel is perpendicular to the main hole of the tunnel, and a plurality of first steel arches and second steel arches are arranged in the transverse channel. A plurality of third steel arches and fourth steel arches are arranged in the tunnel main hole, a first connecting plate is fixedly connected to the end, close to the second steel arch, of the first steel arch, a second connecting plate is fixedly connected to the end, close to the first steel arch, of the second steel arch, and the first connecting plate and the second connecting plate are fixed through bolts. By the adoption of the structure, the construction efficiency is improved, the installation difficulty is reduced, the construction period is shortened, the steel arch can better adapt to various changes in tunnel construction, meanwhile, a more stable supporting system can be formed, pressure and deformation of rock and earth mass around a tunnel can be effectively resisted, and the service life of the tunnel is prolonged. And the stability and safety of the tunnel are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and particularly relates to a supporting structure for an intersection between a tunnel cross passage and a main tunnel. Background Art

[0002] Tunnels are engineering structures buried in the ground, and are a form of human use of underground space. They can shorten travel distances, reduce driving time, improve traffic efficiency, avoid the difficulties and dangers of mountain or water transportation, and increase traffic safety. Tunnels can also reduce traffic congestion and environmental pollution on the surface and improve urban air quality by transferring roads, railways or other transportation facilities underground. Tunnels can be classified according to different standards. For example, they can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, military tunnels, etc. according to their uses; they can be divided into mountain tunnels, underwater tunnels and urban tunnels according to their locations; they can be divided into very small cross-section tunnels, small cross-section tunnels, medium cross-section tunnels, large cross-section tunnels and extra-large cross-section tunnels according to the size of the cross-sectional area. Among them, the support structure of the intersection between the tunnel cross passage and the main tunnel is an important engineering element, which is designed to ensure the stability and safety of the tunnel structure. This support structure usually includes multiple key components that work together to withstand and disperse various forces from inside and outside the tunnel.

[0003] Publication No. "CN204312096U" A support structure for the intersection between a tunnel transverse passage and a main tunnel, the constructed transverse passage is arranged vertically with the tunnel main tunnel, the support structure includes a plurality of second steel arch frames supported in the tunnel main tunnel and a reinforcement support frame located in the transverse passage, the plurality of second steel arch frames are arranged in parallel; the reinforcement support frame includes a first steel arch frame and a steel door frame supported on the outside of the first steel arch frame, the first steel arch frame and the steel door frame are arranged on the same vertical plane; the first steel arch frame is supported in the transverse passage, the first steel arch frame includes an arch support and two first columns, the steel door frame includes two second columns, an upper crossbeam supported between the upper parts of the two second columns, and a plurality of vertical support columns respectively connected between the upper crossbeam and the arch support. The utility model has a simple structure, a reasonable design, convenient support, and a good use effect, and can provide a stable support for the intersection between the tunnel transverse passage and the main tunnel.

[0004] Although the above-mentioned utility model has a simple structure, reasonable design, convenient support, good use effect, and can provide stable support for the intersection between the tunnel cross passage and the main tunnel, the steel portal frame is a key part of the supporting structure and needs to be installed quickly and accurately. If it cannot be quickly spliced ​​and installed, it will take a longer construction time and even require on-site customized processing, which will greatly increase the construction cost and time cost. Moreover, if the steel portal frame cannot be quickly spliced ​​and installed, it will be necessary to adopt more complicated construction methods or temporary support measures, which will increase the uncertainty and risk in the construction process. Utility Model Content

[0005] In response to the problems mentioned in the background technology, the purpose of the utility model is to provide a supporting structure for the intersection between a tunnel cross passage and a main tunnel, so as to solve the problem that the steel door frame cannot be quickly spliced ​​and installed, and needs to be customized on-site, which greatly increases the construction cost and time cost.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A support structure for an intersection between a tunnel transverse passage and a main tunnel, comprising a transverse passage and a tunnel main tunnel, wherein the transverse passage and the tunnel main tunnel are arranged vertically, the width of the tunnel main tunnel is greater than that of the transverse passage, a plurality of first steel arch frames and second steel arch frames are arranged inside the transverse passage, a plurality of third steel arch frames and fourth steel arch frames are arranged inside the tunnel main tunnel, a first connecting plate is fixedly connected to one end of the first steel arch frame close to the second steel arch frame, a second connecting plate is fixedly connected to one end of the second steel arch frame close to the first steel arch frame, the first connecting plate and the second connecting plate are fixedly fixed by bolts, a first limiting block is fixedly connected to one end of the first connecting plate close to the second connecting plate, a first limiting groove is provided at one end of the second connecting plate close to the first connecting plate, and the first limiting groove The first steel arch frame and the second steel arch frame are plugged into the first limit block, and one end of the first steel arch frame and the second steel arch frame are symmetrically provided with a first slot. The first steel arch frame and the second steel arch frame are symmetrically fixedly connected with a plurality of first connecting steel columns at one end away from the first slot. The first connecting steel columns and the first slot are plugged into the first steel arch frame and the second steel arch frame are symmetrically fixedly connected with channel steel at one end close to the first slot. The first connecting steel columns are overlapped between the corresponding two groups of grooves and are welded and fixed to the channel steel, which not only improves the construction efficiency, but also reduces the difficulty of installation and helps to shorten the construction period. Moreover, the steel arch frame can be adjusted and optimized according to actual needs to adapt to different cavern shapes and sizes, so that the steel arch frame can better adapt to various changes in tunnel construction.

[0008] As an optimal technical solution, the third steel arch frame is fixedly connected to a third connecting plate at one end close to the fourth steel arch frame, the fourth steel arch frame is fixedly connected to a fourth connecting plate at one end close to the third steel arch frame, the fourth connecting plate is fixed to the third connecting plate by bolts, the third connecting plate is fixedly connected to a second limiting block at one end close to the fourth connecting plate, a second limiting groove is provided at one end of the fourth connecting plate close to the third connecting plate, the second limiting groove and the second limiting block are plugged in, the third steel arch frame and the fourth steel arch frame are symmetrically provided with second slots at one end, the third steel arch frame and the fourth steel arch frame are symmetrically fixedly connected to a plurality of second connecting steel columns at one end away from the second slot, the second connecting steel column and the second slot are plugged in, the third steel arch frame and the fourth steel arch frame are symmetrically fixedly connected to one end close to the second slot with channel steel, the second connecting steel column is overlapped between the corresponding two groups of grooves and is welded and fixed with the channel steel, which not only improves the construction efficiency, but also reduces the installation difficulty, helps to shorten the construction period, and the steel arch frame can be adjusted and optimized according to actual needs to adapt to different cavern shapes and sizes, so that the steel arch frame can better adapt to various changes in tunnel construction.

[0009] As a preferred technical solution, the first steel arch frame and the second steel arch frame near the third steel arch frame are symmetrically fixedly connected at one end with the first fixed steel column and the second fixed steel column, the first fixed steel column is fixedly connected to the side end of the third steel arch frame, and the second fixed steel column is fixedly connected to the second connecting steel column, which can form a more stable support system, effectively resist the pressure and deformation of the rock and soil around the tunnel, ensure the stability and safety of the tunnel, and also reduce errors and deviations in the construction process to ensure the accuracy and reliability of the support structure.

[0010] In summary, the utility model mainly has the following beneficial effects:

[0011] First, in the utility model, the first steel arch frame and the second steel arch frame are combined, the first connecting plate and the second connecting plate are fitted together, and the first limiting block is inserted into the first limiting groove, and then the first connecting plate and the second connecting plate are fixed by bolts, and then the fixed first steel arch frame and the second steel arch frame are assembled, the first connecting steel column is inserted into the first slot, and the first connecting steel column is overlapped between the corresponding two groups of channel steels, and the first connecting steel column and the channel steel are welded, which not only improves the construction efficiency, but also reduces the installation difficulty, which helps to shorten the construction period, and the steel arch frame can be adjusted and optimized according to actual needs to adapt to different cavern shapes and sizes, so that the steel arch frame can better adapt to various changes in tunnel construction and improve the overall stability of the supporting structure;

[0012] Second, in the utility model, the third steel arch frame and the fourth steel arch frame are combined, and the fixing method of the third steel arch frame and the fourth steel arch frame is the same as the fixing method of the first steel arch frame and the second steel arch frame. Then the fixed third steel arch frame and the fourth steel arch frame are assembled, and the assembly method is the same as the assembly method of the first steel arch frame and the second steel arch frame. The assembled first steel arch frame, the second steel arch frame and the side end of the third steel arch frame are combined, the first fixed steel column and the side end of the third steel arch frame are combined, and the second fixed steel column and the side end of the second connecting steel column are combined, and they are welded at the same time, which can form a more stable support system, effectively resist the pressure and deformation of the rock and soil around the tunnel, ensure the stability and safety of the tunnel, and also reduce errors and deviations in the construction process to ensure the accuracy and reliability of the support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the first steel arch frame, the second steel arch frame, the third steel arch frame and the fourth steel arch frame of the utility model;

[0015] Figure 3 The utility model Figure 2 A magnified view of part A;

[0016] Figure 4 The utility model Figure 2 A magnified view of part B;

[0017] Figure 5 It is a schematic diagram of a sectional three-dimensional structure of the first connecting plate and the second connecting plate of the utility model;

[0018] Figure 6 It is a schematic diagram of the sectional three-dimensional structure of the third connecting plate and the fourth connecting plate of the utility model.

[0019] Figure numerals: 1. transverse channel, 2. main tunnel, 3. first steel arch frame, 4. second steel arch frame, 5. first connecting plate, 6. second connecting plate, 7. first limiting block, 8. first limiting groove, 9. first connecting steel column, 10. channel steel, 11. first slot, 12. third steel arch frame, 13. fourth steel arch frame, 14. third connecting plate, 15. fourth connecting plate, 16. second limiting block, 17. second limiting groove, 18. second connecting steel column, 19. first fixed steel column, 20. second fixed steel column, 21. second slot. DETAILED DESCRIPTION

[0020] refer to Figures 1 to 6The supporting structure of the intersection between a tunnel transverse passage and a main tunnel described in this embodiment comprises a transverse passage 1 and a tunnel main tunnel 2, wherein the transverse passage 1 and the tunnel main tunnel 2 are arranged vertically, the width of the tunnel main tunnel 2 is greater than that of the transverse passage 1, a plurality of first steel arch frames 3 and second steel arch frames 4 are arranged inside the transverse passage 1, a plurality of third steel arch frames 12 and fourth steel arch frames 13 are arranged inside the tunnel main tunnel 2, a first connecting plate 5 is fixedly connected to one end of the first steel arch frame 3 close to the second steel arch frame 4, a second connecting plate 6 is fixedly connected to one end of the second steel arch frame 4 close to the first steel arch frame 3, the first connecting plate 5 and the second connecting plate 6 are fixedly fixed by bolts, a first limiting block 7 is fixedly connected to one end of the first connecting plate 5 close to the second connecting plate 6, a first limiting groove 8 is provided at one end of the second connecting plate 6 close to the first connecting plate 5, the first limiting groove 8 is plugged into the first limiting block 7, and the first steel arch frame 3 and the second steel arch frame 4 are symmetrically provided with first slots at one end 11. The first steel arch frame 3 and the second steel arch frame 4 are symmetrically fixedly connected with a plurality of first connecting steel columns 9 at one end away from the first slot 11. The first connecting steel column 9 and the first slot 11 are plug-in. The first steel arch frame 3 and the second steel arch frame 4 are symmetrically fixedly connected with channel steels 10 at one end close to the first slot 11. The first connecting steel column 9 is overlapped between the corresponding two groups of channel steels 10 and fixed by welding with the channel steels 10. The first steel arch frame 3 and the second steel arch frame 4 are merged to make the first connecting plate 5 and the second connecting plate 6 fit together. At the same time, the first limiting block 7 is inserted into the first limiting slot 8, and then the first connecting plate 5 and the second connecting plate 6 are fixed by bolts. Then, the fixed first steel arch frame 3 and the second steel arch frame 4 are assembled to make the first connecting steel column 9 inserted into the first slot 11. At the same time, the first connecting steel column 9 is overlapped between the corresponding two groups of channel steels 10, and the first connecting steel column 9 is welded to the channel steel 10.

[0021] refer to Figure 2 , Figure 4 and Figure 6The third steel arch frame 12 is fixedly connected to the third connecting plate 14 at one end close to the fourth steel arch frame 13, and the fourth steel arch frame 13 is fixedly connected to the fourth connecting plate 15 at one end close to the third steel arch frame 12. The fourth connecting plate 15 is fixed to the third connecting plate 14 by bolts, and the third connecting plate 14 is fixedly connected to the second limiting block 16 at one end close to the fourth connecting plate 15. The fourth connecting plate 15 is provided with a second limiting groove 17 at one end close to the third connecting plate 14. The second limiting groove 17 is plug-in connected to the second limiting block 16. The third steel arch frame 12 and the fourth steel arch frame 13 are symmetrically provided with second slots 21 at one end, and the third steel arch frame 12 and the fourth steel arch frame 13 are symmetrically fixedly connected with a plurality of second connecting steel columns 18 at one end away from the second slots 21. The second connecting steel columns 18 and the second slots 21 For plug-in, the third steel arch frame 12 and the fourth steel arch frame 13 are symmetrically fixedly connected with the channel steel 10 at one end close to the second slot 21, and the second connecting steel column 18 is overlapped between the corresponding two groups of channel steels 10 and welded and fixed with the channel steel 10, and the third steel arch frame 12 and the fourth steel arch frame 13 are merged, so that the third connecting plate 14 and the fourth connecting plate 15 are fitted, and the second limit block 16 is inserted into the second limit slot 17, and then the third connecting plate 14 and the fourth connecting plate 15 are fixed by bolts, and then the fixed third steel arch frame 12 and the fourth steel arch frame 13 are assembled, so that the second connecting steel column 18 is inserted into the second slot 21, and the second connecting steel column 18 is overlapped between the corresponding two groups of channel steels 10, and the two connecting steel columns are welded to the channel steel 10.

[0022] refer to Figure 2 The first steel arch frame 3 and the second steel arch frame 4 near the third steel arch frame 12 are symmetrically fixedly connected with the first fixed steel column 19 and the second fixed steel column 20 at one end, the first fixed steel column 19 is fixedly connected to the side end of the third steel arch frame 12, and the second fixed steel column 20 is fixedly connected to the second connecting steel column 18. The assembled first steel arch frame 3, the second steel arch frame 4 and the side end of the third steel arch frame 12 are merged, the first fixed steel column 19 is merged with the side end of the third steel arch frame 12, and welded. At the same time, the second fixed steel column 20 is merged with the side end of the second connecting steel column 18 and welded.

[0023] Principle and advantages of use: First, the first steel arch frame 3 and the second steel arch frame 4 are combined, the first connecting plate 5 and the second connecting plate 6 are fitted together, and the first limiting block 7 is inserted into the first limiting groove 8, and then the first connecting plate 5 and the second connecting plate 6 are fixed by bolts, and then the fixed first steel arch frame 3 and the second steel arch frame 4 are assembled, and the first connecting steel column 9 is inserted into the first slot 11, and the first connecting steel column 9 is overlapped between the corresponding two groups of channel steels 10, and the first connecting steel column 9 is welded to the channel steel 10, and then the third steel arch frame 12 and the fourth steel arch frame 13 are combined, and the third connecting plate 14 and the fourth connecting plate 15 are fitted together, and at the same time The second limiting block 16 is inserted into the second limiting groove 17, and then the third connecting plate 14 and the fourth connecting plate 15 are fixed by bolts, and then the fixed third steel arch frame 12 and the fourth steel arch frame 13 are assembled, so that the second connecting steel column 18 is inserted into the second slot 21, and the second connecting steel column 18 is overlapped between the corresponding two groups of channel steels 10, and the two connecting steel columns and the channel steel 10 are welded, and finally the assembled first steel arch frame 3, the second steel arch frame 4 and the side end of the third steel arch frame 12 are merged, and the first fixed steel column 19 is merged with the side end of the third steel arch frame 12 for welding, and the second fixed steel column 20 is merged with the side end of the second connecting steel column 18 for welding;

[0024] The utility model not only improves the construction efficiency, but also reduces the installation difficulty, which helps to shorten the construction period. Moreover, the steel arch frame can be adjusted and optimized according to actual needs to adapt to different cavern shapes and sizes, so that the steel arch frame can better adapt to various changes in tunnel construction, improve the overall stability of the supporting structure, and at the same time form a more stable supporting system, effectively resisting the pressure and deformation of the rock and soil around the tunnel, ensuring the stability and safety of the tunnel, and can also reduce errors and deviations in the construction process, ensuring the accuracy and reliability of the supporting structure.

Claims

1. A support structure for the intersection between a tunnel transverse passage and a main tunnel, comprising a transverse passage (1) and a tunnel main tunnel (2), characterized in that: The transverse channel (1) is arranged vertically with respect to the tunnel main hole (2); the width of the tunnel main hole (2) is greater than that of the transverse channel (1); a plurality of first steel arch frames (3) and second steel arch frames (4) are arranged inside the transverse channel (1); a plurality of third steel arch frames (12) and fourth steel arch frames (13) are arranged inside the tunnel main hole (2); a first connecting plate (5) is fixedly connected to one end of the first steel arch frame (3) close to the second steel arch frame (4); a second connecting plate (6) is fixedly connected to one end of the second steel arch frame (4) close to the first steel arch frame (3); and the first connecting plate (5) and the second connecting plate (6) are fixedly connected by bolts.

2. A support structure for the intersection between a tunnel cross passage and a main tunnel according to claim 1, characterized in that: One end of the first connecting plate (5) close to the second connecting plate (6) is fixedly connected with a first limiting block (7); one end of the second connecting plate (6) close to the first connecting plate (5) is provided with a first limiting groove (8); the first limiting groove (8) and the first limiting block (7) are plug-connected.

3. The support structure of the intersection between the tunnel cross passage and the main tunnel according to claim 1, characterized in that: The first steel arch frame (3) and the second steel arch frame (4) are both symmetrically provided with a first slot (11) at one end, and a plurality of first connecting steel columns (9) are symmetrically fixedly connected to one end of the first steel arch frame (3) and the second steel arch frame (4) away from the first slot (11), and the first connecting steel columns (9) and the first slot (11) are plug-in connected.

4. The support structure of the intersection between the tunnel cross passage and the main tunnel according to claim 3, characterized in that: The first steel arch frame (3) and the second steel arch frame (4) are both symmetrically fixedly connected to channel steels (10) at one end close to the first slot (11), and the first connecting steel column (9) is overlapped between the two corresponding groups of channel steels (10) and is fixed to the channel steels (10) by welding.

5. The support structure of the intersection between the tunnel cross passage and the main tunnel according to claim 1, characterized in that: The third steel arch frame (12) is fixedly connected to one end close to the fourth steel arch frame (13) with a third connecting plate (14), and the fourth steel arch frame (13) is fixedly connected to one end close to the third steel arch frame (12) with a fourth connecting plate (15), and the fourth connecting plate (15) and the third connecting plate (14) are fixed by bolts.

6. The support structure for the intersection between a tunnel cross passage and a main tunnel according to claim 5, characterized in that: One end of the third connecting plate (14) close to the fourth connecting plate (15) is fixedly connected with a second limiting block (16); one end of the fourth connecting plate (15) close to the third connecting plate (14) is provided with a second limiting groove (17); the second limiting groove (17) and the second limiting block (16) are plug-connected.

7. The support structure of the intersection between the tunnel cross passage and the main tunnel according to claim 6, characterized in that: The third steel arch frame (12) and the fourth steel arch frame (13) are both symmetrically provided with a second slot (21) at one end, and a plurality of second connecting steel columns (18) are symmetrically fixedly connected to the ends of the third steel arch frame (12) and the fourth steel arch frame (13) away from the second slot (21), and the second connecting steel columns (18) and the second slot (21) are plug-in connected.

8. The support structure of the intersection between the tunnel cross passage and the main tunnel according to claim 7, characterized in that: The third steel arch frame (12) and the fourth steel arch frame (13) are both symmetrically fixedly connected to the channel steel (10) at one end close to the second slot (21), and the second connecting steel column (18) is overlapped between the corresponding two groups of channel steels (10) and is welded and fixed to the channel steels (10).

9. The support structure of the intersection between the tunnel cross passage and the main tunnel according to claim 8, characterized in that: The first steel arch frame (3) and the second steel arch frame (4) close to the third steel arch frame (12) are both symmetrically fixedly connected with a first fixed steel column (19) and a second fixed steel column (20) at one end; the first fixed steel column (19) is fixedly connected to the side end of the third steel arch frame (12), and the second fixed steel column (20) is fixedly connected to the second connecting steel column (18).

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