Embedded structure for tunnel lining position vibration monitoring

Abstract

The utility model relates to the technical field of tunnel lining vibration monitoring, in particular to an embedded structure for tunnel lining position vibration monitoring, which comprises an initial lining, a first steel bar supporting net is fixedly connected in the initial lining, and a first waterproof plate is fixedly connected on the inner wall of the initial lining. The inner wall of the first waterproof plate is fixedly connected with a secondary lining, the interior of the secondary lining is fixedly connected with a second steel bar supporting net, and the top and the two sides of the second steel bar supporting net are each provided with a protection mechanism used for protecting the vibration monitor. Compared with the prior art, through mutual cooperation of all layers and protection of the vibration monitor, it is ensured that the vibration monitor can work in a humid and complex environment for a long time, the service life of the vibration monitor is prolonged, accurate collection of vibration data is ensured, design of an installation mechanism is facilitated, the installation process of the vibration monitor is simplified, and the installation efficiency of the vibration monitor is improved. The installation is more convenient, the construction efficiency is improved, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel lining vibration monitoring, in particular to a pre-buried structure for tunnel lining position vibration monitoring. Background Art

[0002] Tunnel linings, as a critical structure in tunnel engineering, bear the core responsibility for maintaining tunnel stability and safety. Primarily composed of concrete or reinforced concrete, they are subject to various external vibrations over long periods of use. These vibrations can originate from traffic flow, seismic activity, and surrounding underground construction. To ensure tunnel safety, monitoring the lining's vibration status is a necessary technical requirement. Vibration monitoring can track the health of the tunnel lining in real time, promptly identifying and warning of potential structural issues and preventing lining damage. Effective monitoring enables appropriate maintenance measures to ensure safe tunnel operation. To this end, vibration monitoring systems must operate accurately and stably to ensure the precise collection of vibration data.

[0003] Existing tunnel construction workers install the protective box equipped with vibration monitors by welding. The complex construction environment and limited space make welding inconvenient and reduce safety. Welding multiple vibration monitors is time-consuming and labor-intensive, reducing the work efficiency of construction workers and making it inconvenient to use. At the same time, the embedded sensors may be affected by the concrete environment during long-term use, such as moisture and chemical corrosion, causing sensor performance degradation or failure, and unable to guarantee the accurate collection of vibration data, making it inconvenient to use. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a pre-buried structure for vibration monitoring at the tunnel lining position to solve the problems of inconvenience, time-consuming and labor-intensive welding. When welding multiple vibration monitors, the work efficiency of construction workers is reduced. At the same time, the pre-buried sensors may be affected by the concrete environment during long-term use, resulting in sensor performance degradation or failure.

[0005] Based on the above-mentioned purpose, the utility model provides a pre-buried structure for vibration monitoring of tunnel lining position, including an initial lining, the interior of the initial lining is fixedly connected to a first steel support mesh, the inner wall of the initial lining is fixedly connected to a first waterproof board, the inner wall of the first waterproof board is fixedly connected to a secondary lining, the interior of the secondary lining is fixedly connected to a second steel support mesh, the top and both sides of the second steel support mesh are respectively provided with protection mechanisms for protecting vibration monitors, the protection mechanisms include a protection box arranged between the second steel support meshes, and both sides of the protection box are respectively provided with convenient installation mechanisms for quickly installing the vibration monitor.

[0006] Preferably, the outer wall of the protective box is coated with an anti-corrosion layer, the interior of the protective box is fixedly connected to a waterproof layer, the interior of the waterproof layer is fixedly connected to a sealing layer, the interior of the sealing layer is fixedly connected to a moisture-absorbing layer, and the interior of the moisture-absorbing layer is fixedly connected to a fixing part for fixing the vibration monitor.

[0007] Preferably, the installation mechanism includes a fixing rod fixedly connected to both sides of the fixing part, and the number of the fixing rods is set to four. One end of the fixing rod is rotatably connected to two opposite fixing clamps, and spring plates are fixedly connected on both sides of the fixing clamps. A telescopic spring is provided between one end of the fixing rod and the spring plate, and an extrusion plate is fixedly connected to the end of the fixing clamp away from the fixing rod.

[0008] Preferably, a locking groove is provided on the side wall of one of the fixing clamps, a sliding groove is provided on the inner wall of the locking groove, an extrusion spring is fixedly connected to the inside of the sliding groove, one end of the extrusion spring is fixedly connected to a limiting block, and a locking block is fixedly connected to the side wall of the other fixing clamp.

[0009] Preferably, a slope is provided on one end of the limiting block close to the engaging groove, and a slope is provided on one side of the engaging block close to the limiting block.

[0010] Preferably, a second waterproof board is fixedly connected to the inner wall of the secondary lining.

[0011] Preferably, the anti-corrosion layer of the outer wall coating of the fixing member is made of epoxy resin.

[0012] Preferably, the waterproof layer is made of silicone.

[0013] Preferably, the shape of the fixing clamp is semicircular relative to the fixing clamp, and the shape is circular when the fixing clamps are relatively combined, and the diameter of the inner wall is adapted to the diameter of the outer wall of the second steel support mesh.

[0014] Preferably, the extrusion plate provided on the fixing fixture is arranged opposite to each other and has an arc shape.

[0015] Beneficial effects of the utility model:

[0016] 1. The embedded structure for vibration monitoring at the tunnel lining position is coated with an anti-corrosion layer on the outer wall of the protection box through the protection mechanism, which makes it have high adhesion and chemical resistance, and can effectively prevent water, acid, alkali and salt substances from corroding the outer wall, thereby extending the service life of the protection box. The waterproof layer prevents water and moisture from entering the interior of the protection box, ensuring that the vibration monitor is not affected in a humid environment, improving the waterproof performance, protecting the internal electronic components of the vibration monitor, and preventing corrosion and short circuits caused by moisture. The sealing layer also adopts a moisture-proof sealing strip to ensure the sealing of the joints between the protection boxes, further preventing moisture from penetrating. The moisture-absorbing layer is made of a molecular sieve desiccant, which has a high adsorption capacity and can effectively absorb moisture in a low humidity environment, ensuring that the vibration monitor can work for a long time in a humid and complex environment, increasing the service life of the vibration monitor, and ensuring the accurate collection of vibration data for easy use.

[0017] 2. The embedded structure for vibration monitoring at the tunnel lining position has a convenient installation mechanism design that simplifies the installation process of the vibration monitor. Construction workers only need to align the protective box with the steel support net and fix it through simple operations such as pressing, without the need for complex welding technology. This simplified operation improves the convenience of construction, and then the protective box can be firmly fixed on the second steel support net, making it convenient for construction workers to quickly install the protective box, improve construction efficiency, enhance safety, reduce human resource consumption, improve installation quality and enhance adaptability, with significant beneficial effects. It can effectively reduce complexity and risks during construction, improve work efficiency, and is suitable for various construction environments. It provides an optimized solution for the rapid installation and reliable fixation of vibration monitors in tunnel projects and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the protective box of the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixing fixture and the extrusion plate of the utility model;

[0022] Figure 4 For this utility model Figure 3A in the middle is an enlarged schematic diagram of the three-dimensional structure.

[0023] The following are marked in the figure:

[0024] 1. Initial lining; 2. First steel support mesh; 3. First waterproof board; 4. Secondary lining; 5. Second steel support mesh; 6. Protective box; 7. Fixing parts; 8. Anti-corrosion layer; 9. Waterproof layer; 10. Sealing layer; 11. Moisture absorption layer; 12. Fixing rod; 13. Fixing fixture; 14. Spring plate; 15. Telescopic spring; 16. Extrusion plate; 17. Snap-fit ​​groove; 18. Slide groove; 19. Extrusion spring; 20. Limit block; 21. Snap-fit ​​block; 22. Second waterproof board. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0027] like Figures 1 to 4 As shown, a pre-buried structure for vibration monitoring at the tunnel lining position includes an initial lining 1, a first steel support mesh 2 is fixedly connected to the interior of the initial lining 1, a first waterproof board 3 is fixedly connected to the inner wall of the initial lining 1, a secondary lining 4 is fixedly connected to the inner wall of the first waterproof board 3, a second steel support mesh 5 is fixedly connected to the interior of the secondary lining 4, and a protection mechanism for protecting a vibration monitor is respectively provided on the top and both sides of the second steel support mesh 5. The protection mechanism includes a protection box 6 arranged between the second steel support mesh 5, and convenient installation mechanisms for quickly installing the vibration monitor are respectively provided on both sides of the protection box 6.

[0028] For further information, see the attached Figure 2As shown, the outer wall of the protective box 6 is coated with an anti-corrosion layer 8, the material of the anti-corrosion layer 8 coated on the outer wall of the fixing member 7 is made of epoxy resin, the interior of the protective box 6 is fixedly connected with a waterproof layer 9, the material of the waterproof layer 9 is made of silicone material, the interior of the waterproof layer 9 is fixedly connected with a sealing layer 10, the interior of the sealing layer 10 is fixedly connected with a moisture absorbing layer 11, and the interior of the moisture absorbing layer 11 is fixedly connected with a fixing member 7 for fixing the vibration monitor;

[0029] When the protection mechanism is in use, first install the first steel support mesh 2 in the tunnel, and then use the external automatic pouring lining vehicle to pour concrete on the outside of the first steel support mesh 2 to form the initial lining 1, which plays a supporting role. Then the first waterproof board 3 is installed on the inside of the initial lining 1. After the first waterproof board 3 is installed, the inner wall of the first waterproof board 3 is subjected to secondary lining 4. During the secondary lining 4, the second steel support mesh 5 needs to be installed on the inner wall of the first waterproof board 3. Then the protection box 6 equipped with the vibration monitor is fixedly installed on the second steel support mesh 5 and the concrete is poured on the outside of the second steel support mesh 5 again by the automatic pouring lining vehicle to form the secondary lining 4. The outer wall of the protection box 6 is coated with an anti-corrosion layer 8, which makes it have high adhesion. Strength and chemical resistance, can effectively prevent water, acid, alkali and salt substances from corroding the outer wall, extend the service life of the protective box 6, and then prevent water and moisture from entering the protective box through the waterproof layer 9, ensure that the vibration monitor is not affected in a humid environment, improve the waterproof performance, protect the internal electronic components of the vibration monitor, and prevent corrosion and short circuits caused by moisture. The sealing layer 10 adopts a moisture-proof sealing strip to ensure the sealing of the joints between the protective boxes 6, further preventing moisture from penetrating. The moisture-absorbing layer 11 is made of a molecular sieve desiccant, which has a high adsorption capacity of the molecular sieve and can effectively absorb moisture in a low humidity environment, ensuring that the vibration detector can work for a long time in a humid and complex environment, increasing the service life of the vibration detector and facilitating use.

[0030] For further information, see the attached Figure 3 and Figure 4 As shown, the installation mechanism includes a fixing rod 12 fixedly connected to both sides of the fixing member 7, and there are four fixing rods 12. One end of the fixing rod 12 is rotatably connected to two opposite fixing clamps 13. Both sides of the fixing clamp 13 are fixedly connected with a spring plate 14. A telescopic spring 15 is extended between one end of the fixing rod 12 and the spring plate 14. An extrusion plate 16 is fixedly connected to the end of the fixing clamp 13 away from the fixing rod 12. A side wall of one of the fixing clamps 13 is provided with a snap-fitting groove 17, and an inner wall of the snap-fitting groove 17 is provided with a slide groove 18. An extrusion spring 19 is fixedly connected to the inside of the slide groove 18. One end of the extrusion spring 19 is fixedly connected to a limiting block 20, and a side wall of the other fixing clamp 13 is fixedly connected to a snap-fitting block 21.

[0031] When the installation mechanism is in use, first, during the secondary lining 4, it is necessary to align the fixing rod 12 on the protection box 6 with the second steel bar support mesh 5, press the protection box 6, so that the fixing rod 12 drives the fixing clamp 13 to move toward the second steel bar support mesh 5, and at this time, the extrusion plate 16 contacts the second steel bar support mesh 5 and squeezes the extrusion plate 16, and the extrusion plate 16 drives the fixing clamp 13 to rotate to one side, and the fixing clamp 13 drives the spring plate 14 to rotate and squeeze the telescopic spring 15. When the second steel bar support mesh 5 enters the fixing clamp 13, the spring plate 14 is squeezed by the spring force of the telescopic spring 15 itself, and the spring plate 14 drives the fixing clamp 13 to wrap the second steel bar support mesh 5. At this time, due to the squeezing of the spring 19 The spring force is greater than the telescopic spring 15, so that the locking block 21 does not enter the locking groove 17. The staff then pinches the extrusion plates 16 on both sides, and then the locking block 21 will enter the locking groove 17 and squeeze the limit block 20. The limit block 20 is squeezed and retracted back into the slide groove 18 and squeezes the extrusion spring 19. When the locking block 21 is fully entered, the extrusion spring 19 squeezes the limit block 20 through its own spring force, so that the limit block 20 is engaged with the locking block 21, and then the protective box 6 can be firmly fixed on the second steel support mesh 5, thereby facilitating the construction personnel to quickly install the protective box 6 without the need for complicated welding technology, reducing construction time, improving work efficiency, saving time and effort, and being easy to use.

[0032] For further information, see the attached Figure 4 As shown, a slope is provided on one end of the limit block 20 close to the engaging groove 17, and a slope is provided on the side of the engaging block 21 close to the limit block 20. The side walls of the limit block 20 and the engaging block 21 are both provided with slopes, which facilitates squeezing the limit block 20 after the engaging block 21 enters the engaging groove 17, so that the limit block 20 can limit the engaging block 21.

[0033] For further information, see the attached Figure 1 As shown, the inner wall of the secondary lining 4 is fixedly connected with a second waterproof plate 22. The second waterproof plate 22 is provided to further waterproof the tunnel, thereby keeping the tunnel dry.

[0034] For further information, see the attached Figure 3 As shown, the shape of the relative fixing clamp 13 is semicircular. When the fixing clamp 13 is relatively fitted, the shape is circular and the diameter of the inner wall is adapted to the outer wall diameter of the second steel support mesh 5. When the fixing clamp 13 is relatively fitted, the inner wall diameter is consistent with the outer wall diameter of the second steel support mesh 5, so that the fixing clamp 13 can better fix the protective box 6 on the second steel support mesh 5 to avoid falling off.

[0035] For further information, see the attached Figure 3As shown, the extrusion plate 16 arranged on the relative fixing clamp 13 is arranged relative to each other and has an arc shape. The arc shape of the extrusion plate 16 makes it possible for the extrusion plate 16 to contact the outer wall of the second steel support mesh 5, and the second steel support mesh 5 will squeeze the extrusion plate 16 to drive the fixing clamp 13 to open. There is no need for construction workers to pry open the fixing clamp 13 and then fix it on the second steel support mesh 5, which saves time and effort.

Claims

1. A pre-buried structure for monitoring vibration of a tunnel lining position, comprising an initial lining (1), a first steel support mesh (2) fixedly connected to the interior of the initial lining (1), and a first waterproofing plate (3) fixedly connected to the inner wall of the initial lining (1), characterized in that: The inner wall of the first waterproof board (3) is fixedly connected to a secondary lining (4), the interior of the secondary lining (4) is fixedly connected to a second steel support mesh (5), the top and both sides of the second steel support mesh (5) are respectively provided with a protection mechanism for protecting the vibration monitor, the protection mechanism includes a protection box (6) arranged between the second steel support mesh (5), and both sides of the protection box (6) are respectively provided with a convenient installation mechanism for quickly installing the vibration monitor.

2. The embedded structure for monitoring vibration of tunnel lining according to claim 1, characterized in that: The outer wall of the protection box (6) is coated with an anti-corrosion layer (8), the interior of the protection box (6) is fixedly connected to a waterproof layer (9), the interior of the waterproof layer (9) is fixedly connected to a sealing layer (10), the interior of the sealing layer (10) is fixedly connected to a moisture absorbing layer (11), and the interior of the moisture absorbing layer (11) is fixedly connected to a fixing member (7) for fixing a vibration monitor.

3. The embedded structure for monitoring vibration of tunnel lining according to claim 1, characterized in that: The installation mechanism comprises a fixing rod (12) fixedly connected to both sides of the fixing member (7), and the number of the fixing rods (12) is four. One end of the fixing rod (12) is rotatably connected to two opposite fixing clamps (13), and both sides of the fixing clamps (13) are fixedly connected to spring plates (14). A telescopic spring (15) is provided between one end of the fixing rod (12) and the spring plate (14), and an extrusion plate (16) is fixedly connected to one end of the fixing clamp (13) away from the fixing rod (12).

4. The embedded structure for monitoring vibration of tunnel lining according to claim 3, characterized in that: A snap-fitting groove (17) is provided on the side wall of one of the fixing clamps (13), a sliding groove (18) is provided on the inner wall of the snap-fitting groove (17), an extrusion spring (19) is fixedly connected to the interior of the sliding groove (18), one end of the extrusion spring (19) is fixedly connected to a limiting block (20), and a snap-fitting block (21) is fixedly connected to the side wall of the other fixing clamp (13).

5. The embedded structure for monitoring vibration of tunnel lining according to claim 4, characterized in that: The end of the limit block (20) close to the engaging groove (17) is provided with a slope, and the side of the engaging block (21) close to the limit block (20) is provided with a slope.

6. The embedded structure for monitoring vibration of tunnel lining according to claim 1, characterized in that: A second waterproof plate (22) is fixedly connected to the inner wall of the secondary lining (4).

7. The embedded structure for monitoring vibration of tunnel lining according to claim 2, characterized in that: The anti-corrosion layer (8) of the outer wall coating of the fixing member (7) is made of epoxy resin.

8. The embedded structure for monitoring vibration of tunnel lining according to claim 2, characterized in that: The waterproof layer (9) is made of silica gel.

9. The embedded structure for monitoring vibration of tunnel lining according to claim 3, characterized in that: The shape of the fixing clamp (13) is semicircular relative to the fixing clamp (13), and when the fixing clamp (13) is relatively combined, the shape is circular, and the diameter of the inner wall is adapted to the outer wall diameter of the second steel bar support mesh (5).

10. The embedded structure for monitoring vibration of tunnel lining according to claim 3, characterized in that: The extrusion plate (16) provided on the fixing fixture (13) is arranged opposite to each other and has an arc shape.

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