Tunnel lining vault pressure contact type void monitoring device

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a tunnel lining vault pressure contact type void monitoring device which comprises a primary lining layer, a waterproof plate, an installation clamping strip and a monitoring piece, the waterproof plate is fixed on the inner side surface of the primary lining layer, an installation groove is formed in the center of the top of the waterproof plate, and the installation clamping strip is clamped in the installation groove. A mounting clamping groove is formed in the mounting clamping strip, two feeding grooves are formed in the position, located on the lower side of the mounting clamping groove, of the surface of the mounting clamping strip, and a plurality of monitoring pieces are slidably connected into the mounting clamping groove; the monitoring parts are pre-mounted in the mounting clamping strips and can slide in the mounting clamping grooves, so that the number and the positions of the monitoring parts can be adjusted according to actual construction requirements, local replacement of the damaged monitoring parts is facilitated, the construction convenience is effectively improved, the monitoring precision is improved, and the construction cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a tunnel lining arch pressure contact type void monitoring device. Background Technology

[0002] During the pouring of secondary lining concrete in tunnels, the inability to accurately monitor the concrete filling within the secondary lining formwork can lead to insufficient compaction of the secondary lining concrete. This results in the secondary lining arch not adhering tightly to the initial support, creating gaps between the initial support and the secondary lining. Alternatively, excessive filling of the secondary lining concrete can cause deformation and damage to the secondary lining formwork trolley. CN221595007U discloses a monitoring device for preventing voids in the arch of tunnel secondary lining concrete pouring. This device includes a waterproof plate closely attached to the tunnel inner wall, with a groove along its length on the arch of the waterproof plate; an installation strip, which is pressed into the groove; and multiple pressure sensors evenly spaced on the installation strip, each pressure sensor connected to an output cable, one end of which is connected to a monitoring control box. This invention allows for convenient, integrated installation of pressure sensors with uniform spacing, effectively preventing voids in the concrete filling.

[0003] This device integrates and fixes multiple pressure sensors on the surface of the mounting strip, thus enabling the simultaneous installation of multiple sensors. However, in actual use, the positions of the multiple pressure sensors are relatively fixed and cannot be flexibly adjusted according to actual usage needs, which affects the monitoring accuracy. Furthermore, when the pressure sensors are damaged, the entire device needs to be replaced, resulting in high construction costs.

[0004] Therefore, it is necessary to invent a pressure-contact type void monitoring device for tunnel lining arches to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pressure-contact type void monitoring device for tunnel lining arches, in order to solve the problems in the technology that cannot be flexibly adjusted according to actual usage needs, affecting monitoring accuracy, and that the entire device needs to be replaced when the pressure sensor is damaged, resulting in high construction costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tunnel lining arch pressure contact type void monitoring device, comprising a primary lining layer, a waterproof membrane, mounting strips, and monitoring components. The waterproof membrane is fixed to the inner surface of the primary lining layer. An installation groove is provided at the center of the top of the waterproof membrane. The mounting strip is inserted into the installation groove. An installation slot is provided inside the mounting strip. Two sets of feeding slots are provided on the surface of the mounting strip at the position below the installation slot. Multiple sets of monitoring components are slidably connected inside the installation slot.

[0007] By adopting the above technical solution, the primary lining layer is used for support in the early stage of construction, and the waterproof membrane is used to improve the waterproofness of the tunnel. The surface of the top waterproof membrane has a pre-set installation groove, and multiple sets of monitoring components are pre-installed inside the installation clips. During construction, the installation clips are directly clipped into the installation grooves to install multiple sets of monitoring components. During the installation process, the number and position of the monitoring components can be adjusted according to the actual construction needs, and it is convenient to replace damaged monitoring components locally, which effectively improves the convenience of construction and reduces construction costs.

[0008] Optionally, multiple sets of spring sheets are fixedly connected to both the left and right surfaces of the mounting strip, and an adhesive layer is fixedly connected to the upper surface of the mounting strip.

[0009] By adopting the above technical solution, multiple sets of spring plates are used to tightly clamp the mounting strip inside the mounting groove, while the adhesive layer is used to make the mounting strip tightly connected to the top wall of the mounting groove, further improving the firmness of the mounting strip.

[0010] Optionally, the monitoring components include a mounting base, threaded hole, locking screw, clamping plate, limiting block, pressure sensor, and limiting groove, with the mounting base snapped into the mounting groove.

[0011] By adopting the above technical solution, the monitoring component slides inside the mounting slot through the mounting base, thereby adjusting its position, and the pressure sensor is used to monitor the concrete pressure.

[0012] Optionally, the threaded hole is located inside the mounting base near the front side, and the locking screw is threadedly connected to the threaded hole.

[0013] By adopting the above technical solution, the locking screw is rotated upwards, and its upper end abuts against the inside of the mounting slot, thereby locking and fixing the mounting base. Conversely, the mounting base is unlocked by rotating it downwards, allowing it to slide.

[0014] Optionally, two sets of clamping plates are fixedly connected to the lower surface of the mounting base near the rear side, and the pressure sensor is clamped between the two sets of clamping plates.

[0015] By adopting the above technical solution, the clamping plate is used to clamp and fix the pressure sensor.

[0016] Optionally, limit blocks are fixedly connected to the inner surfaces of both sets of clamping plates.

[0017] Optionally, limit grooves are provided on both the front and rear surfaces of the pressure sensor, and the limit block is locked inside the limit groove.

[0018] By adopting the above technical solution, the limiting block is stuck inside the limiting groove to further fix the pressure sensor.

[0019] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0020] 1. This utility model installs the monitoring component inside the mounting slot, allowing the monitoring component to slide within the mounting slot. This enables the front and rear positions of the monitoring component to be adjusted according to actual construction needs, effectively improving construction convenience and concrete pressure detection accuracy.

[0021] 2. This utility model provides two sets of feeding slots on the lower surface of the mounting strip. These feeding slots facilitate the removal or installation of monitoring components from the mounting slots, as well as the replacement of damaged monitoring components. This further improves the ease of construction, reduces construction costs, and achieves cost reduction and efficiency improvement. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the mounting groove structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the mounting clip structure of this utility model;

[0025] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the diagram;

[0026] Figure 5 This is a schematic diagram of the monitoring component structure of this utility model. Figure 1 (With pressure sensor connected);

[0027] Figure 6 This is a schematic diagram of the monitoring component structure of this utility model. Figure 2 (Pressure sensor disconnected).

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Primary lining layer; 11. Waterproof membrane; 12. Mounting groove; 2. Mounting clip; 21. Mounting slot; 22. Feeding chute; 23. Spring sheet; 24. Adhesive layer; 3. Monitoring component; 31. Mounting base; 32. Threaded hole; 33. Locking screw; 34. Clamping piece; 35. Limiting block; 36. Pressure sensor; 37. Limiting groove. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0031] This utility model provides, for example Figures 1 to 4The tunnel lining arch pressure contact type void monitoring device shown includes a primary lining layer 1, a waterproof membrane 11, a mounting strip 2, and monitoring components 3. The waterproof membrane 11 is fixed to the inner surface of the primary lining layer 1. An installation groove 12 is provided at the center of the top of the waterproof membrane 11. The mounting strip 2 is inserted into the installation groove 12. An installation slot 21 is provided inside the installation strip 2. Two sets of feeding slots 22 are provided on the surface of the installation strip 2 below the installation slot 21. Multiple sets of monitoring components 3 are slidably connected inside the installation slot 21. Multiple sets of spring plates 23 are fixedly connected to the left and right surfaces of the installation strip 2. An adhesive layer 24 is fixedly connected to the upper surface of the installation strip 2.

[0032] Among them, the mounting strip 2 is a PVC strip, which has high structural strength and low cost. The spring sheet 23 is a PVC sheet. The mounting strip 2, mounting groove 21, feeding groove 22 and spring sheet 23 are integrally formed. The adhesive layer 24 is subsequently fixed on the upper surface of the mounting strip 2, and an oil film is pasted on its surface to protect the adhesive layer 24.

[0033] Meanwhile, all monitoring components 3 are pre-installed inside the mounting slot 21. During construction, the oil film on the surface of the adhesive layer 24 is peeled off, and then the mounting strip 2 is directly inserted into the mounting slot 12 and pressed down. At this time, multiple sets of spring plates 23 work together to tightly clamp the mounting strip 2 inside the mounting slot 12. At the same time, the adhesive layer 24 is tightly bonded to the inner top wall of the mounting slot 12, further improving the firmness of the connection of the mounting strip 2.

[0034] See Figure 3 , Figure 5 and Figure 6 The monitoring component 3 includes a mounting base 31, a threaded hole 32, a locking screw 33, a clamping piece 34, a limiting block 35, a pressure sensor 36, and a limiting groove 37. The mounting base 31 is inserted into the mounting slot 21. The threaded hole 32 is located inside the mounting base 31 near the front side. The locking screw 33 is threadedly connected to the threaded hole 32. Two sets of clamping pieces 34 are fixedly connected to the lower surface of the mounting base 31 near the rear side. The pressure sensor 36 is inserted between the two sets of clamping pieces 34. The inner surfaces of both sets of clamping pieces 34 are fixedly connected to the limiting blocks 35. Limiting grooves 37 are opened on both the front and rear surfaces of the pressure sensor 36. The limiting blocks 35 are inserted into the limiting grooves 37.

[0035] In addition, during the installation of the monitoring component 3, the pressure sensor 36 is clamped between the two sets of clamping plates 34, and the limiting block 35 is clamped inside the limiting groove 37 to clamp and fix the pressure sensor 36. Then, the mounting base 31 is inserted from the feeding groove 22 into the mounting slot 21, and then the mounting base 31 is slid inside the mounting slot 21 to install and adjust the monitoring component 3. After adjusting to the designated position, the locking screw 33 is turned upward so that its upper end abuts against the inner top wall of the mounting slot 21 to lock and fix the mounting base 31, thereby fixing the position of the monitoring component 3 and improving the stability during construction.

[0036] Specifically, during the construction process, the monitoring component 3 is first pre-installed inside the mounting slot 21, and then the mounting strip 2 is inserted into the mounting slot 12. At this time, the distance between the lower end of the pressure sensor 36 in the monitoring component 3 and the waterproof board 11 is about 3mm. Next, according to the actual construction needs, the distance between the monitoring components 3 is selectively adjusted, or new monitoring components 3 are added. Then, the support formwork is lined for the second time.

[0037] The working principle of this utility model is as follows: multiple sets of monitoring components 3 are pre-installed inside the mounting clip 2. During construction, the mounting clip 2 is directly clipped into the mounting groove 12 to install multiple sets of monitoring components 3. During the installation process, the number and position of the monitoring components 3 can be adjusted according to the actual construction needs, and it is convenient to replace damaged monitoring components locally, which effectively improves the convenience of construction, improves the monitoring accuracy, and reduces the construction cost.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A tunnel lining vault pressure touch void monitoring device, comprising a primary lining layer (1), a waterproof board (11), a mounting clasp (2) and a monitoring piece (3), characterized in that: The waterproof plate (11) is fixed to the inner side surface of the primary lining layer (1), a mounting groove (12) is arranged at the center of the top of the waterproof plate (11), the mounting clamping strip (2) is clamped in the mounting groove (12), a mounting clamping groove (21) is arranged in the mounting clamping strip (2), two groups of feeding grooves (22) are arranged on the surface of the mounting clamping strip (2) below the mounting clamping groove (21), and a plurality of monitoring pieces (3) are slidably connected in the mounting clamping groove (21).

2. The tunnel lining vault pressure contact void monitoring device according to claim 1, characterized in that: The left and right surfaces of the mounting clamping strip (2) are fixedly connected with a plurality of spring sheets (23), and the upper surface of the mounting clamping strip (2) is fixedly connected with a sticky adhesive layer (24).

3. The device according to claim 1, characterized in that: The monitoring piece (3) comprises a mounting seat (31), a threaded hole (32), a locking screw (33), a clamping sheet (34), a limiting block (35), a pressure sensor (36) and a limiting groove (37), and the mounting seat (31) is clamped in the mounting clamping groove (21).

4. The device according to claim 3, wherein: The threaded hole (32) is arranged in the mounting seat (31) and close to the front side, and the locking screw (33) is threadedly connected with the threaded hole (32).

5. The device according to claim 3, wherein the device is characterized by: The lower surface of the mounting seat (31) is fixedly connected with two groups of clamping sheets (34) close to the rear side, and the pressure sensor (36) is clamped between the two groups of clamping sheets (34).

6. A press-to-test disbond monitoring device for a tunnel lining crown, according to claim 5, characterised in that: The inner side surfaces of the two groups of clamping sheets (34) are fixedly connected with limiting blocks (35).

7. A press-to-test disbond monitoring device for a tunnel lining crown, according to claim 6, characterised in that: The front and rear surfaces of the pressure sensor (36) are provided with limiting grooves (37), and the limiting blocks (35) are clamped in the limiting grooves (37).

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