Monitoring point device for shield tunnel segment displacement monitoring

Abstract

The utility model discloses a monitoring point device for shield tunnel segment displacement monitoring, which relates to the technical field of monitoring and measuring, and comprises a measuring prism, a fixing assembly and a locking assembly, the measuring prism is connected to one end of the fixing assembly through a connecting assembly, the other end of the fixing assembly comprises a locking head, the locking head is matched with a pre-buried channel of a segment, and the locking assembly is connected with the measuring prism. A locking part is arranged between the locking head and the inner wall surface of the pre-buried channel, the locking assembly is located outside the pre-buried channel, and the locking assembly is in threaded connection with the fixing assembly, so that the locking part is pressed against the inner wall surface of the pre-buried channel; according to the utility model, the measuring prism is stably connected with the embedded channel of the segment structure through the fixing assembly and the locking assembly, and the locking part has the function of improving frictional resistance, so that the anti-loosening or anti-falling performance of the monitoring point device is improved, the stable connection and cooperative deformation with the segment structure are realized, and the continuity of monitoring data is ensured.

Description

Technical Field

[0001] This utility model relates to the field of monitoring and measurement technology, specifically to a monitoring point device for monitoring the displacement of tunnel segments in shield tunnels. Background Technology

[0002] Shield tunneling, as a construction method for tunnel engineering, is now widely used. Shield tunnels operate in complex underground geological environments, subjected to soil and water pressure, inevitably experiencing displacement and deformation. In severe cases, this can lead to problems such as tunnel segment cracking, water leakage, and even water seepage. During the construction and operation of shield tunnels, it is necessary to monitor the displacement and deformation of the tunnel segments, such as crown settlement, horizontal and vertical displacement, and clearance convergence, to assess the safety status of the tunnel structure. Currently, in China, monitoring devices for shield tunnel segment displacement are traditionally installed using drilling or adhesive methods. Drilling can damage the segment structure, compromising its safety. Adhesive installation suffers from instability, susceptibility to damage or loosening, resulting in discontinuous data collection. Therefore, a stable, reliable, and non-destructive monitoring device is needed. This device would monitor and measure the displacement changes of the shield tunnel segments during construction and operation to assess the safety status of the tunnel structure. Utility Model Content

[0003] The purpose of this utility model is to provide a monitoring point device for monitoring the displacement of tunnel segments. The measuring prism is stably connected to the pre-embedded channel of the segment structure through a fixing component and a locking component. The locking part has the function of increasing frictional resistance, which improves the performance of the monitoring point device in preventing loosening or falling off, realizes stable connection and coordinated deformation with the segment structure, and ensures the continuity of monitoring data.

[0004] This utility model is achieved through the following technical solution:

[0005] A monitoring point device for monitoring the displacement of tunnel segments in a shield tunnel includes:

[0006] A measuring prism, wherein the measuring prism is connected to one end of a fixed assembly via a connecting assembly;

[0007] The fixing component includes a locking head at one end, which matches the pre-embedded channel of the segment, and a locking part is provided between the locking head and the inner wall surface of the pre-embedded channel.

[0008] A locking assembly is located outside the pre-embedded channel. The locking assembly is threadedly connected to the fixing assembly, so that the locking part is pressed and abutted against the inner wall surface of the pre-embedded channel.

[0009] In this scheme, the measuring prism is used in conjunction with the measuring equipment to acquire segment displacement data; the connecting component connects the measuring prism and the fixing component, facilitating their installation and disassembly; the fixing component is positioned by a locking head that matches the pre-embedded channel of the segment, and a locking part is provided on the inner wall of the pre-embedded channel to increase contact friction; the locking component is located outside the pre-embedded channel and is threadedly connected to the fixing component. When tightened, the locking part can press against the inner wall of the pre-embedded channel, firmly installing the entire monitoring point device on the pre-embedded channel of the segment, ensuring stable operation of the device in complex environments, ensuring the fixed position of the measuring prism, providing a reliable basis for accurate acquisition of segment displacement data, and thus realizing effective monitoring of the displacement of shield tunnel segments.

[0010] As a further embodiment of the monitoring point device, the connecting assembly includes a connecting rod, which is connected to the fixing assembly via a quick-release mechanism.

[0011] In this solution, the quick-release mechanism greatly improves the ease of use of the device. During installation, disassembly, and subsequent maintenance, workers can quickly separate or connect the connecting rods and fixing components, saving significant time and labor costs. In the complex and ever-changing monitoring environment of shield tunnels, if a component malfunctions or needs replacement, the quick-release design allows for rapid operation, improving work efficiency.

[0012] As a further embodiment of the monitoring point device, the fixing component includes a threaded rod, and the connecting rod has a hollow center that is threadedly connected to the threaded rod.

[0013] In this design, the fixing component uses a threaded rod, which mates with a hollow, threaded connecting rod, providing a stable and reliable connection between the measuring prism and the fixing component. The threaded connection simplifies the installation process; a tight connection is achieved by rotating the connecting rod, and the tightness of the connection can be adjusted according to actual needs. In the complex environment of a shield tunnel, this robust connection effectively resists vibration, displacement, and other interference, ensuring the measuring prism maintains a stable position and thus guaranteeing the accuracy and continuity of monitoring data.

[0014] As a further embodiment of the monitoring point device, the quick-release mechanism includes a quick-release buckle, and the fixing component includes a threaded rod. One end of the threaded rod is provided with a cavity that matches the connecting rod. The quick-release buckle is sleeved on the outer wall of the cavity and clamps the threaded rod and the connecting rod.

[0015] In this design, the quick-release mechanism uses a quick-release buckle, which, in conjunction with a cavity for a matching connecting rod at one end of the threaded rod, enables rapid connection and disassembly. In practice, this design significantly improves work efficiency. When installing, replacing, or repairing the monitoring point device, workers can quickly separate or connect the connecting rod and the threaded rod without the need for complex tools, simply by operating the quick-release buckle. Furthermore, this structural design enhances the device's flexibility, allowing for the rapid replacement of connecting rods or other components of different specifications according to varying monitoring needs and site conditions, thus improving the versatility and adaptability of the monitoring point device.

[0016] As a further solution for the monitoring point device, in the monitoring of the displacement of shield tunnel segments, stable installation is a prerequisite for accurately obtaining monitoring data. Therefore, the locking part includes a first locking tooth plate, which is connected to the upper end face of the locking head and pressed against the inner wall of the pre-embedded channel.

[0017] In this design, the first locking tooth plate, located on the upper surface of the locking head, presses against the inner wall of the pre-embedded channel under the action of the locking assembly, greatly increasing the friction between the fixing assembly and the pre-embedded channel. This effectively prevents the monitoring point device from loosening or falling off during segment displacement monitoring, ensuring that the measuring prism remains stably connected to the segment, thereby guaranteeing the continuity and accuracy of the monitoring data.

[0018] As a further embodiment of the monitoring point device, the locking part includes a first locking tooth plate and a second locking tooth plate, which are connected to the upper end face of the locking head and pressed against the inner wall of the pre-embedded channel.

[0019] In this scheme, the stability of the monitoring point device directly affects the accuracy and reliability of the data during the displacement monitoring of shield tunnel segments. The first and second locking teeth are connected to the upper end face of the locking head. When they are pressed against the inner wall of the pre-embedded channel by the locking assembly, frictional force can be generated from multiple angles and positions. Compared with only one locking tooth, two locking teeth increase the contact area with the inner wall of the pre-embedded channel, providing stronger friction and grip.

[0020] As a further embodiment of the monitoring point device, the teeth of the first locking tooth plate and the second locking tooth plate are in opposite directions.

[0021] In this scheme, during the monitoring of shield tunnel segment displacement, the device needs to be stably fixed in the pre-embedded channel for a long period of time to ensure the accuracy of data monitoring. When the two locking teeth with opposite directions press against the inner wall of the pre-embedded channel, they can generate a mutually restraining force, which greatly enhances the device's ability to resist various complex external interferences, ensuring that the monitoring point device remains stable throughout the segment displacement monitoring process, thereby guaranteeing the accuracy and reliability of the monitoring data.

[0022] As a further embodiment of the monitoring point device, the locking assembly includes a locking nut, which is threadedly connected to the threaded rod. The locking nut locks the locking part to the inner wall of the pre-embedded channel by screwing the thread in.

[0023] In this solution, a locking nut connected to the threaded rod provides a reliable and easy-to-operate fastening method for the fixed monitoring point device. During installation, simply rotate the locking nut; utilizing the transmission principle of the thread, the locking nut gradually screws in, thus pressing the locking part tightly against the inner wall of the pre-embedded channel. This not only facilitates installation and disassembly but also allows for flexible adjustment of the locking force according to actual needs, ensuring the device is securely installed.

[0024] As a further embodiment of the monitoring point device, a flange is connected to one end of the locking nut near the locking part. The flange abuts against the outer wall of the pre-embedded channel, and the abutting surface of the flange is covered with locking grooves.

[0025] In this design, the flange is connected to the end of the locking nut near the locking part, increasing the contact area with the outer wall of the pre-embedded channel. This allows the pressure applied by the locking nut to be distributed more evenly, preventing localized pressure concentration from damaging the tunnel segments and enhancing the overall stability of the connection between the device and the tunnel segments. The mating surface covered with locking grooves greatly increases the friction between the flange and the outer wall of the pre-embedded channel, effectively preventing the flange from sliding relative to the outer wall of the channel due to external forces such as vibration and compression during tunnel construction or operation, thereby preventing the monitoring point device from loosening.

[0026] As a further embodiment of the monitoring point device, a rubber gasket is also provided between the flange and the locking head.

[0027] In this design, the rubber gasket firstly has an anti-slip function, which can effectively increase the friction between the flange and the locking head, preventing relative displacement between the two under vibration and external force, and further stabilizing the overall structure of the monitoring point device. At the same time, the rubber gasket can also play a shock absorption role, reducing the impact of vibration generated during shield tunnel construction or operation on the monitoring point device, avoiding loosening or damage of the device due to long-term vibration, and ensuring the stability of the measuring prism.

[0028] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0029] 1. This utility model securely connects the measuring prism to the pre-embedded channel of the tunnel segment structure through a fixing component and a locking component. The device is installed after the shield tunnel segment is assembled. Before installation, the installation position is accurately measured and positioned, and the monitoring point device is installed in the pre-embedded channel of the tunnel segment structure without damage. The locking part has the function of increasing frictional resistance, which improves the performance of the monitoring point device in preventing loosening or falling off, realizes stable connection and coordinated deformation with the tunnel segment structure, and ensures the continuity of monitoring data.

[0030] The two utility models use a non-destructive mechanical installation process, which is simple and convenient to install and disassemble. Compared with the drilling method, there is no need to drill holes in the segment structure, thus avoiding damage to the segment structure. Compared with the adhesive method, the mechanical installation method is firm, stable and reliable, overcoming the problem that the measuring points are easily damaged, loosened or fallen off.

[0031] 3. This utility model is reusable, which reduces resource consumption and lowers costs. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0033] Figure 1 This is a schematic diagram of the structure of this utility model;

[0034] Figure 2 This is a structural diagram of the present invention in use.

[0035] The attached diagram shows the markings and corresponding component names:

[0036] 1-Measuring prism, 2-Connecting rod, 3-Fixing assembly, 31-Threaded rod, 32-Locking head, 33-Locking part, 331-First locking tooth plate, 332-Second locking tooth plate, 4-Locking assembly, 41-Locking nut, 42-Flange, 43-Locking groove, 5-Rubber washer. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0038] Example 1

[0039] This embodiment 1 provides a monitoring point device for monitoring the displacement of tunnel segments, such as... Figures 1-2 As shown, the device includes a measuring prism 1, a fixing component 3, and a locking component 4. The measuring prism 1 is connected to one end of the fixing component 3 via a connecting component. The other end of the fixing component 3 includes a locking head 32, which matches the pre-embedded channel of the tunnel segment. The locking head 32 is a T-shaped head, and a locking part 33 is provided between the locking head 32 and the inner wall surface of the pre-embedded channel. The locking part 33 has the function of increasing frictional resistance. The locking component 4 is located outside the pre-embedded channel and is threadedly connected to the fixing component 3, so that the locking part 33 is pressed against the inner wall surface of the pre-embedded channel to achieve a stable connection. This achieves the purpose of improving the performance of the monitoring point device in preventing loosening or falling off, realizing a stable connection and coordinated deformation with the tunnel segment structure, and ensuring the continuity of monitoring data.

[0040] Specifically, please refer to Figure 1 As shown, the above-mentioned connecting component includes a connecting rod 2, which is connected to the fixing component 3 through a quick-release mechanism. In this embodiment, in order to provide a stable and reliable connection, the fixing component 3 includes a threaded rod 31. The middle part of the connecting rod 2 is hollow and threadedly connected to the threaded rod 31. The firmness of the connection can be adjusted by tightening according to actual needs.

[0041] Of course, in some other embodiments, the quick-release mechanism can also be a quick-release buckle, with a cavity for matching the connecting rod 2 provided at one end of the threaded rod 31. The quick-release buckle is sleeved on the outer wall of the cavity and clamps the threaded rod 31 and the connecting rod 2. This method can quickly separate or connect the connecting rod 2 and the threaded rod 31, improving the flexibility of the device.

[0042] Please refer to the following: Figure 1 As shown, the locking part 33 includes a first locking tooth plate 331. The end face of the first locking tooth plate 331 facing the inner wall of the pre-embedded channel is provided with anti-slip teeth. This end face presses against the inner wall of the pre-embedded channel, greatly increasing the friction between the fixing component 3 and the pre-embedded channel. In order to provide stronger friction and grip, the locking part 33 also includes a second locking tooth plate 332. The first locking tooth plate 331 and the second locking tooth plate 332 are connected to the upper end face of the locking head and press against the inner wall of the pre-embedded channel. Compared with only one locking tooth plate, two locking tooth plates increase the contact area with the inner wall of the pre-embedded channel, thereby greatly increasing the friction between the fixing component 3 and the pre-embedded channel.

[0043] In some other embodiments, to enhance the device's ability to resist various complex external forces, the teeth of the first locking tooth plate 331 and the second locking tooth plate 332 are opposite. When the two locking tooth plates with opposite tooth directions press against the inner wall of the pre-embedded channel, they can generate a mutually restraining force, thereby ensuring that the monitoring point device remains stable during the segment displacement monitoring process.

[0044] Please refer to Figure 1 and Figure 2 As shown, the locking assembly 4 includes a locking nut 41, which is threadedly connected to the threaded rod 31. The locking nut 41 is screwed into the inner wall of the pre-embedded channel by the thread, locking and fixing the assembly 3. During installation, simply rotate the locking nut 41. Utilizing the transmission principle of the thread, the locking nut 41 can be gradually screwed in, thereby pressing the locking part 33 tightly against the inner wall of the pre-embedded channel. This not only facilitates installation and disassembly but also allows for flexible adjustment of the locking force according to actual needs, ensuring that the device is securely installed.

[0045] Meanwhile, a flange 42 is connected to one end of the locking nut 41 near the locking part 33. The flange 42 abuts against the outer wall of the pre-embedded channel, and the abutting surface of the flange is covered with locking grooves 43. The abutting surface covered with locking grooves 43 greatly increases the friction between the flange 42 and the outer wall of the pre-embedded channel, thereby preventing the monitoring point device from loosening. In addition, to further stabilize the overall structure of the monitoring point device, a rubber washer 5 is also provided between the flange 42 and the locking head 32. The rubber washer 5 has an anti-slip function and can effectively increase the friction between the flange 42 and the locking head 32, preventing relative displacement between the two under vibration and external force.

[0046] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A monitoring point device for monitoring the displacement of tunnel segments in a shield tunnel, characterized in that, include: A measuring prism (1) is connected to one end of a fixing assembly (3) via a connecting assembly; The fixing component (3) includes a locking head (32) at the other end, which matches the pre-embedded channel of the segment, and a locking part (33) is provided between the locking head (32) and the inner wall surface of the pre-embedded channel. Locking component (4) is located outside the pre-embedded channel. The locking component (4) is threadedly connected to the fixing component (3) so that the locking part (33) is pressed against the inner wall surface of the pre-embedded channel.

2. The monitoring point device for monitoring the displacement of tunnel segments according to claim 1, characterized in that, The connecting component includes a connecting rod (2), which is connected to the fixing component (3) via a quick-release mechanism.

3. A monitoring point device for monitoring the displacement of tunnel segments according to claim 2, characterized in that, The fixing component (3) includes a threaded rod (31), and the middle part of the connecting rod (2) is hollow and threadedly connected to the threaded rod (31).

4. A monitoring point device for monitoring the displacement of tunnel segments according to claim 2, characterized in that, The quick-release mechanism includes a quick-release buckle, and the fixing component (3) includes a threaded rod (31). One end of the threaded rod (31) is provided with a cavity that matches the connecting rod (2). The quick-release buckle is sleeved on the outer wall of the cavity and clamps the threaded rod (31) and the connecting rod (2).

5. A monitoring point device for monitoring the displacement of tunnel segments according to claim 3, characterized in that, The locking part (33) includes a first locking tooth plate (331), which is connected to the upper end face of the locking head (32) and presses against the inner wall of the pre-embedded channel.

6. A monitoring point device for monitoring the displacement of tunnel segments according to claim 3, characterized in that, The locking part (33) includes a first locking tooth plate (331) and a second locking tooth plate (332). The first locking tooth plate (331) and the second locking tooth plate (332) are connected to the upper end face of the locking head (32) and press against the inner wall of the pre-embedded channel.

7. A monitoring point device for monitoring the displacement of tunnel segments according to claim 6, characterized in that, The teeth of the first locking tooth plate (331) and the second locking tooth plate (332) are opposite in direction.

8. A monitoring point device for monitoring the displacement of tunnel segments according to claim 6, characterized in that, The locking assembly (4) includes a locking nut (41), which is threadedly connected to the threaded rod (31). The locking nut (41) locks the locking part (33) and the inner wall of the pre-embedded channel by screwing the thread into the locking part (33).

9. A monitoring point device for monitoring the displacement of tunnel segments according to claim 8, characterized in that, The locking nut (41) is connected to a flange (42) at one end near the locking part (33). The flange (42) abuts against the outer wall of the pre-embedded channel, and the abutting surface of the flange (42) is covered with locking grooves (43).

10. A monitoring point device for monitoring the displacement of tunnel segments according to claim 9, characterized in that, A rubber gasket (5) is also provided between the flange (42) and the locking head (32).

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