Shield tunnel segment attitude real-time monitoring system

Abstract

The invention relates to a shield tunnel segment attitude real-time monitoring system. The system comprises a plurality of shield segments, an attitude monitor and a cloud platform; a plurality of shield segments are spliced in the circumferential direction to form shield pipe fittings, the adjacent shield pipe fittings are spliced and fixed to form a tunnel lining, and the adjacent shield segments are fixed through segment bolts; a posture monitor is arranged between every two adjacent shield segments, each posture monitor comprises a detector, a controller electrically connected to the detector and a wireless communicator electrically connected to the controller, and the detectors are used for monitoring displacement data between the adjacent shield segments; and the controller transmits the displacement data to the cloud platform through a wireless communicator. The method has the effect of monitoring the settlement condition of each shield segment.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel segment settlement monitoring, and in particular to a real-time monitoring system for the posture of shield tunnel segments. Background Art

[0002] In recent years, shield tunnels have developed rapidly as the main form of urban rail transit. The health and safety of tunnel structures during operation has become a very important issue. Shield segments are the main components of shield tunnels. The tunnel lining formed by connecting the shield segments with segment bolts is the innermost barrier of urban subway shield tunnels. It is also the only guarantee to keep the tunnel structure intact and free from damage. It is responsible for isolating and buffering the vibration and impact caused by soil pressure, groundwater pressure and alternating loads during train operation.

[0003] With respect to the above-mentioned related technologies, the inventors found that the shield segments are connected by segment bolts. Since the bending stiffness of the joints and the shield segments is different, the joints may be relatively displaced due to uneven force on the shield segments, resulting in shield segment misalignment. Currently, there is no good way to monitor the shield segments, so there is room for improvement. Summary of the invention

[0004] In order to monitor shield tunnel segments, the present application provides a real-time monitoring system for the posture of shield tunnel segments.

[0005] The present application provides a shield tunnel segment posture real-time monitoring system that adopts the following technical solutions: A shield tunnel segment posture real-time monitoring system, comprising a plurality of shield segments, a posture monitor and a cloud platform; Several shield segments are spliced ​​in the circumferential direction to form shield pipes, adjacent shield pipes are spliced ​​and fixed to form tunnel lining, and adjacent shield segments are fixed by segment bolts; An attitude monitor is provided between adjacent shield segments, and the attitude monitor includes a detector, a controller electrically connected to the detector, and a wireless communicator electrically connected to the controller. The detector is used to monitor the displacement data between adjacent shield segments, and the controller transmits the displacement data to the cloud platform via the wireless communicator.

[0006] Preferably, the detector comprises a connecting ball sleeve arranged on the end face of the shield segment on one side, and a connecting ball head arranged on the end face of the shield segment on the other side, wherein the connecting ball head is used for plugging and matching with the connecting ball sleeve; An installation cavity is provided on the end face of the shield segment on the other side, a connecting rod is extended from the center of the connecting ball head, the connecting rod is rotatably installed in the installation cavity, an interference disc is provided at the end of the connecting rod, and a plurality of contact switches are circumferentially arranged at intervals on the inner wall of the installation cavity, the contact switches are opposite to the interference disc, and the contact switches are electrically connected to the controller.

[0007] Preferably, a spherical mounting groove is opened on the end face of the shield segment on one side, a mounting bracket is arranged in the spherical mounting groove, the connecting ball sleeve is fixed in the spherical mounting groove by the mounting bracket, and a movable gap is maintained between the connecting ball sleeve and the groove wall of the spherical mounting groove.

[0008] Preferably, an expansion groove is provided on the inner wall of the connecting ball sleeve, and the expansion groove extends from the end surface of the connecting ball sleeve.

[0009] Preferably, a rotating bracket is provided on the inner wall of the installation cavity, and the rotating bracket is connected to the connecting rod.

[0010] Preferably, a receiving cavity is provided on the end surface of the shield segment on the other side, the receiving cavity is communicated with the installation cavity through a connecting port, a piston sheet is slidably installed in the receiving cavity, the receiving cavity is filled with sealant, a push spring is provided in the receiving cavity, one end of the push spring abuts against the inner wall of the receiving cavity, and the other end of the push spring abuts against the piston sheet; The connecting rod is provided with a flow channel along its axial direction, one end of the flow channel is communicated with the end face of the connecting rod, and the other end of the flow channel is communicated with the end face of the connecting ball head; a glue injection channel is provided on the end face of the shield segment on one side, one end of the glue injection channel is communicated with the end face of the shield segment, and the other end of the glue injection channel is communicated with the interior of the connecting ball sleeve; A conduit is arranged in the installation cavity, one end of the conduit is connected to the connecting rod to communicate with the flow channel, and the other end of the conduit is communicated with the communication port; A limiting mechanism for limiting the sliding of the piston sheet is arranged in the accommodating cavity, and a triggering mechanism for triggering the limiting mechanism is arranged on the connecting rod.

[0011] Preferably, the limiting mechanism includes a fixing sleeve fixed on the surface of the piston plate, and two limiting rods slidably installed on the surface of the piston plate, a limiting spring is installed between the fixing sleeve and the limiting rod, and a limiting groove for plugging and cooperating with the end of the limiting rod is provided on the inner wall of the accommodating cavity, and the trigger mechanism is connected to the limiting rod.

[0012] Preferably, the trigger mechanism includes a traction rope, one end of which is fixed to the end of the connecting rod, and the other end of which passes through the conduit, the connecting port, the accommodating cavity and the fixing sleeve respectively, and the other end of which is fixed to the end of the limiting rod respectively.

[0013] Preferably, the connecting port includes a first port and a second port, the diameter of the first port is larger than the diameter of the second port, the first port is connected to the conduit, one end of the second port is connected to the first port, and the other end of the second port is connected to the accommodating cavity.

[0014] Preferably, a rubber ball for closing the second opening is fixed on the traction rope.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: The present application installs an attitude monitor between adjacent shield segments. The attitude monitor is used to monitor the displacement data between adjacent shield segments, and then can send the displacement data to the cloud platform after the shield segments sink and deviate. The cloud platform is used to monitor all shield segments in real time, so that the shield segments that have sunk can be repaired in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of shield pipe fittings.

[0017] Figure 2 It is the system block diagram of the attitude monitor.

[0018] Figure 3 This is a schematic diagram of the installation of shield pipe fittings.

[0019] Figure 4 This is the first installation diagram of the attitude monitor.

[0020] Figure 5 This is the second installation diagram of the attitude monitor.

[0021] Figure 6 This is a schematic diagram of the installation of the connecting ball head.

[0022] Figure 7 yes Figure 6 Enlarged schematic diagram of part A in the middle.

[0023] Explanation of the reference numerals: 1. shield segment; 2. posture monitor; 3. shield pipe; 4. segment bolt; 5. connecting ball sleeve; 6. connecting ball head; 7. spherical mounting groove; 8. movable gap; 9. expansion groove; 10. mounting cavity; 11. connecting rod; 12. rotating bracket; 13. abutting disc; 14. contact switch; 15. accommodating cavity; 16. connecting port; 161. first port; 162. second port; 17. piston plate; 18. sealant; 19. push spring; 20. flow channel; 21. glue injection channel; 22. conduit; 23. limiting mechanism; 231. fixing sleeve; 232. limiting rod; 233. limiting spring; 234. limiting groove; 24. traction rope; 25. rubber ball. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-7 This application is described in further detail.

[0025] A real-time monitoring system for shield tunnel segment posture, referring to Figure 1 and Figure 2 As shown, it includes a plurality of shield segments 1, an attitude monitor 2 and a cloud platform. A plurality of shield segments 1 are spliced ​​along the circumferential direction to form a shield pipe 3. Adjacent shield pipes 3 are spliced ​​and fixed to form a tunnel lining. Adjacent shield segments 1 are fixed by segment bolts 4. An attitude monitor 2 is arranged between adjacent shield segments 1. The attitude monitor 2 is used to monitor the displacement data between adjacent shield segments 1 and transmit it to the cloud platform.

[0026] Specifically, each shield segment 1 is arranged in an arc shape. In one embodiment, five shield segments 1 can be spliced ​​to form a shield pipe fitting 3. The shield pipe fitting 3 is in a circular tube shape. Adjacent shield segments 1 are installed and fixed by segment bolts 4, and the shield pipe fittings 3 are correspondingly installed and fixed by segment bolts 4. The segment bolts 4 are located on the shield segment 1 to fix adjacent shield pipe fittings 3.

[0027] It is worth noting that the attitude monitor 2 is not only arranged on adjacent shield segments 1, but also arranged between adjacent shield pipes 3, so as to achieve effective monitoring of various positions of the tunnel lining.

[0028] The present application installs a posture monitor 2 between adjacent shield segments 1. The posture monitor 2 is used to monitor the displacement data between adjacent shield segments 1, and then can send the displacement data to the cloud platform after the shield segment 1 has settled and deviated, and then use the cloud platform to monitor all shield segments 1 in real time, so that the settled shield segments 1 can be repaired in time. Each posture monitor 2 has a corresponding number, which can correspond to the position of the tunnel lining. The displacement data of all posture monitors 2 are summarized through the cloud platform, so that the position where the tunnel lining has settled can be quickly known.

[0029] The attitude monitor 2 includes a detector, a controller electrically connected to the detector, and a wireless communicator electrically connected to the controller. The detector is used to monitor the displacement data between adjacent shield segments 1, and the controller transmits the displacement data to the cloud platform via the wireless communicator.

[0030] In one embodiment, referring to Figure 3 and Figure 4 As shown, the detector includes a connecting ball sleeve 5 arranged on the end face of the shield segment 1 on one side, and a connecting ball head 6 arranged on the end face of the shield segment 1 on the other side, and the connecting ball head 6 is used to be plugged and matched with the connecting ball sleeve 5. A spherical mounting groove 7 is provided on the end face of the shield segment 1 on one side, and a mounting bracket is arranged in the spherical mounting groove 7. The connecting ball sleeve 5 is fixed in the spherical mounting groove 7 through the mounting bracket. An active gap 8 is maintained between the connecting ball sleeve 5 and the groove wall of the spherical mounting groove 7. The connecting ball sleeve 5 is inserted into the spherical mounting groove 7, and the connecting ball sleeve 5 does not protrude from the end face of the shield segment 1. Among them, an expansion groove 9 is opened on the inner wall of the connecting ball sleeve 5, and a plurality of expansion grooves 9 are provided, and a plurality of expansion grooves 9 extend from the end face of the connecting ball sleeve 5. Therefore, when the end faces of the shield segment 1 on one side are matched with the end faces of the shield segment 1 on the other side, and the connecting ball head 6 is embedded in the connecting ball sleeve 5, due to the action of the expansion groove 9 on the connecting ball sleeve 5, the connecting ball sleeve 5 will be expanded, so that the connecting ball head 6 can be embedded in the connecting ball sleeve 5.

[0031] Reference Figure 5 and Figure 6 As shown, a mounting cavity 10 is provided on the end face of the shield segment 1 on the other side, and a connecting rod 11 is provided at the center of the connecting ball head 6. The connecting rod 11 is rotatably mounted in the mounting cavity 10. A rotating bracket 12 is provided on the inner wall of the mounting cavity 10. The rotating bracket 12 is connected to the connecting rod 11. The rotating bracket 12 is made of rubber material, so that the connecting rod 11 can swing up and down and left and right under the action of the rotating bracket 12. An abutting disc 13 is provided at the end of the connecting rod 11, and a plurality of contact switches 14 are provided at intervals circumferentially on the inner wall of the mounting cavity 10. The contact switches 14 are electrically connected to the controller, and the contact switches 14 are arranged opposite to the abutting disc 13.

[0032] When settlement occurs between adjacent shield segments 1, a height difference appears between the end faces of one shield segment 1 and the other shield segment 1. At this time, the connecting ball head 6, under the action of the connecting ball sleeve 5, causes the connecting rod 11 to swing, and according to the different misaligned orientations of the adjacent shield segments 1, the connecting rod 11 can swing to the corresponding orientation until the abutting disc 13 at the end of the connecting rod 11 touches the contact switch 14, so that the contact switch 14 can send a trigger signal to the controller. And the controller can generate displacement data according to the trigger signal of the contact switch 14 in the corresponding orientation and send it to the cloud platform. The cloud platform can obtain the direction of displacement of the shield segment 1 at the corresponding position to facilitate the maintenance of the shield segment 1.

[0033] In the present application, when adjacent shield segments 1 are misaligned, a certain gap will appear on the end face of the shield segment 1, so the waterproof performance between the end faces of the shield pipe 3 will be reduced, in order to solve the above problem.

[0034] In this application, reference is made to Figure 6 and Figure 7 As shown, a receiving chamber 15 is opened on the end face of the shield segment 1 on the other side, and the receiving chamber 15 is communicated with the installation chamber 10 through a connecting port 16. A piston plate 17 is slidably installed in the receiving chamber 15. The receiving chamber 15 is filled with a sealant 18. A push spring 19 is arranged in the receiving chamber 15, and one end of the push spring 19 abuts against the inner wall of the receiving chamber 15, and the other end of the push spring 19 abuts against the piston plate 17.

[0035] A flow channel 20 is opened in the axial direction of the connecting rod 11, one end of the flow channel 20 is communicated with the end face of the connecting rod 11, and the other end of the flow channel 20 is communicated with the end face of the connecting ball head 6. A glue injection channel 21 is opened on the end face of one side of the shield segment 1, one end of the glue injection channel 21 is communicated with the end face of the shield segment 1, and the other end of the glue injection channel 21 is communicated with the interior of the connecting ball sleeve 5.

[0036] A conduit 22 is provided in the installation cavity 10, one end of the conduit 22 is connected to the connecting rod 11 through a joint to communicate with the flow channel 20, and the other end of the conduit 22 is communicated with the connecting port 16 through a joint. A limiting mechanism 23 for limiting the sliding of the piston plate 17 is provided in the accommodating cavity 15, and a trigger mechanism for triggering the limiting mechanism 23 is provided on the connecting rod 11. When the piston plate 17 slides to increase the space of the accommodating cavity 15, the push spring 19 will be compressed, and the limiting mechanism 23 limits the movement of the piston plate 17, so that the accommodating cavity 15 can store the sealant 18.

[0037] When the trigger mechanism releases the restriction of the limiting mechanism 23 on the piston plate 17, the piston plate 17 will compress the space of the accommodating chamber 15 under the action of the pushing spring 19, so that the sealant 18 in the accommodating chamber 15 will overflow from the end face of the shield segment 1 through the conduit 22, the flow channel 20, and the injection channel 21, so that the sealant 18 can re-fill the end face of the shield segment 1 to ensure the sealing between the end faces of the shield segment 1.

[0038] The limiting mechanism 23 includes a fixing sleeve 231 fixed on the surface of the piston plate 17, and two limiting rods 232 slidably installed on the surface of the piston plate 17. The two limiting rods 232 are located on both sides of the fixing sleeve 231. A limiting spring 233 is installed between the fixing sleeve 231 and the limiting rod 232. One end of the limiting spring 233 is fixed on the outer wall of the fixing sleeve 231, and the other end of the limiting spring 233 is fixed to the end of the limiting rod 232. A limiting groove 234 for plugging and cooperating with the end of the limiting rod 232 is provided on the inner wall of the accommodating chamber 15, and the trigger mechanism is connected to the limiting rod 232.

[0039] In one embodiment, the trigger mechanism includes a traction rope 24, one end of which is fixed to the end of the connecting rod 11, and the other end of the traction rope 24 passes through the conduit 22, the connecting port 16, the accommodating cavity 15 and the fixing sleeve 231 respectively, and the other end of the traction rope 24 is fixed to the end of the limiting rod 232 respectively.

[0040] Therefore, when the connecting rod 11 swings due to the misalignment of adjacent shield segments 1, the connecting rod 11 will pull the traction rope 24, so that the traction rope 24 pulls the limiting rod 232 to move, so that the end of the limiting rod 232 disengages from the limiting groove 234, thereby realizing the trigger mechanism to release the restriction of the limiting mechanism 23 on the piston plate 17. The piston plate 17 will compress the space of the accommodating chamber 15 under the action of the push spring 19 to press out the sealant 18 in the accommodating chamber 15.

[0041] It is worth noting that the communication port 16 includes a first port 161 and a second port 162. The diameter of the first port 161 is larger than the diameter of the second port 162. The first port 161 is connected to the conduit 22. One end of the second port 162 is connected to the first port 161, and the other end of the second port 162 is connected to the accommodating chamber 15. A rubber ball 25 for closing the second port 162 is fixed on the traction rope 24. The rubber ball 25 can close the second port 162, so that the sealant 18 remains sealed in the accommodating chamber 15 to prevent the sealant 18 from hardening. When the traction rope 24 is pulled due to the swing of the connecting rod 11, the rubber ball 25 can move with the traction rope 24, and the rubber ball 25 is released from the second port 162, so that the sealant 18 is conveniently squeezed out of the accommodating chamber 15 by the piston sheet 17.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A real-time monitoring system for the attitude of shield tunnel segments, characterized in that: It comprises a plurality of shield segments (1), a posture monitor (2) and a cloud platform; A plurality of shield segments (1) are spliced ​​in a circumferential direction to form a shield pipe member (3), adjacent shield pipe members (3) are spliced ​​and fixed to form a tunnel lining, and adjacent shield segments (1) are fixed by segment bolts (4); An attitude monitor (2) is provided between adjacent shield segments (1), and the attitude monitor (2) comprises a detector, a controller electrically connected to the detector, and a wireless communicator electrically connected to the controller. The detector is used to monitor the displacement data between adjacent shield segments (1), and the controller transmits the displacement data to the cloud platform via the wireless communicator.

2. A shield tunnel segment posture real-time monitoring system according to claim 1, characterized in that: The detector comprises a connecting ball sleeve (5) arranged on the end surface of the shield segment (1) on one side, and a connecting ball head (6) arranged on the end surface of the shield segment (1) on the other side, wherein the connecting ball head (6) is used for plugging and matching with the connecting ball sleeve (5); An installation cavity (10) is provided on the end surface of the shield segment (1) on the other side, a connecting rod (11) is extended from the center of the connecting ball head (6), and the connecting rod (11) is rotatably installed in the installation cavity (10). An abutting disc (13) is provided at the end of the connecting rod (11), and a plurality of contact switches (14) are circumferentially arranged at intervals on the inner wall of the installation cavity (10), the contact switches (14) are opposite to the abutting disc (13), and the contact switches (14) are electrically connected to the controller.

3. A shield tunnel segment posture real-time monitoring system according to claim 2, characterized in that: A spherical mounting groove (7) is provided on the end surface of the shield segment (1) on one side, a mounting bracket is arranged in the spherical mounting groove (7), the connecting ball sleeve (5) is fixed in the spherical mounting groove (7) by the mounting bracket, and a movable gap (8) is maintained between the connecting ball sleeve (5) and the groove wall of the spherical mounting groove (7).

4. A shield tunnel segment posture real-time monitoring system according to claim 2, characterized in that: An expansion groove (9) is provided on the inner wall of the connecting ball sleeve (5), and the expansion groove (9) extends from the end surface of the connecting ball sleeve (5).

5. A shield tunnel segment posture real-time monitoring system according to claim 2, characterized in that: A rotating bracket (12) is provided on the inner wall of the installation cavity (10), and the rotating bracket (12) is connected to the connecting rod (11).

6. A shield tunnel segment posture real-time monitoring system according to claim 2, characterized in that: A receiving cavity (15) is provided on the end surface of the shield segment (1) on the other side, the receiving cavity (15) is communicated with the installation cavity (10) through a connecting port (16), a piston plate (17) is slidably installed in the receiving cavity (15), the receiving cavity (15) is filled with a sealing glue (18), a push spring (19) is provided in the receiving cavity (15), one end of the push spring (19) abuts against the inner wall of the receiving cavity (15), and the other end of the push spring (19) abuts against the piston plate (17); The connecting rod (11) is provided with a flow channel (20) along its axial direction, one end of the flow channel (20) is communicated with the end face of the connecting rod (11), and the other end of the flow channel (20) is communicated with the end face of the connecting ball head (6); a glue injection channel (21) is provided on the end face of the shield segment (1) on one side, one end of the glue injection channel (21) is communicated with the end face of the shield segment (1), and the other end of the glue injection channel (21) is communicated with the interior of the connecting ball sleeve (5); A conduit (22) is provided in the installation cavity (10), one end of the conduit (22) is connected to the connecting rod (11) to communicate with the flow channel (20), and the other end of the conduit (22) is communicated with the communication port (16); A limiting mechanism (23) for limiting the sliding of the piston plate (17) is arranged in the accommodating cavity (15), and a triggering mechanism for triggering the limiting mechanism (23) is arranged on the connecting rod (11).

7. A shield tunnel segment posture real-time monitoring system according to claim 6, characterized in that: The limiting mechanism (23) comprises a fixing sleeve (231) fixed on the surface of the piston plate (17), and two limiting rods (232) slidably mounted on the surface of the piston plate (17); a limiting spring (233) is mounted between the fixing sleeve (231) and the limiting rods (232); a limiting groove (234) for plugging and cooperating with the end of the limiting rod (232) is arranged on the inner wall of the accommodating cavity (15); and the trigger mechanism is connected to the limiting rod (232).

8. A shield tunnel segment posture real-time monitoring system according to claim 7, characterized in that: The trigger mechanism comprises a traction rope (24), one end of which is fixed to the end of the connecting rod (11), the other end of which passes through the conduit (22), the connecting port (16), the accommodating cavity (15) and the fixing sleeve (231), and the other end of which is fixed to the end of the limiting rod (232).

9. A shield tunnel segment posture real-time monitoring system according to claim 8, characterized in that: The communication port (16) comprises a first port (161) and a second port (162); the diameter of the first port (161) is greater than the diameter of the second port (162); the first port (161) is connected to the conduit (22); one end of the second port (162) is connected to the first port (161); and the other end of the second port (162) is connected to the accommodating chamber (15).

10. A shield tunnel segment posture real-time monitoring system according to claim 9, characterized in that: A rubber ball (25) for closing the second opening (162) is fixed on the traction rope (24).

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