Ground subsidence deformation monitoring equipment for shield construction

Abstract

The invention relates to the technical field of shield construction, in particular to ground subsidence deformation monitoring equipment for shield construction, which comprises a bottom plate, a sleeve is fixedly connected to the lower end of the bottom plate, a subsidence rod is arranged in the sleeve, the upper end of the subsidence rod extends to the upper part of the bottom plate and is fixedly connected with a vertical rod, and a protective cover is arranged on the bottom plate on the outer side of the vertical rod. An outer cylinder is arranged on the bottom plate on the outer side of the protective cover, an inner cylinder is slidably connected to the inner side of the outer cylinder, and feedback mechanisms are arranged in the outer cylinder and the inner cylinder. According to the invention, when the ground is settled, the settlement rod moves downwards, the inner cylinder and the outer cylinder are driven by the connecting assembly to generate relative displacement, and the inner cylinder moves downwards, so that the settlement degree is displayed and quantified, and the settlement condition can be fed back in real time by observing the relative position of the inner cylinder; constructors can conveniently take corresponding measures in time according to the settlement condition, and the influence on the follow-up work progress is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of shield construction, and in particular to ground settlement deformation monitoring equipment for shield construction. Background Art

[0002] Shield construction technology is a key technology for subway construction projects. In the process of building urban subways, no matter how deep they are buried, it will inevitably disturb the rock and soil, causing varying degrees of surface movement and deformation, which is particularly significant in soft soil layers. In addition, under complex engineering and hydrogeological conditions, accidents such as ground subsidence, tunnel flooding, damage to surrounding buildings and structures, and damage to underground pipelines often occur due to improper survey, design or construction measures.

[0003] If there is ground subsidence during the construction process, and it cannot be monitored in real time, it will be impossible to analyze the construction monitoring data, provide feedback information, guide construction, provide a basis for the selection of shield tunneling parameters, and strictly control the surface subsidence or uplift. Even if the existing monitoring and early warning devices can detect ground subsidence, most of them cannot directly feedback the depth of the subsidence, which will affect the judgment of the operators and the progress of subsequent work to a certain extent. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problem and to propose a ground settlement deformation monitoring device for shield construction.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A ground settlement deformation monitoring device for shield construction, comprising a bottom plate, a sleeve fixedly connected to the lower end of the bottom plate, a settlement rod arranged in the sleeve, an upper end of the settlement rod extending above the bottom plate and fixedly connected to a vertical rod, a protective cover arranged on the bottom plate outside the vertical rod, an outer cylinder arranged on the bottom plate outside the protective cover, an inner cylinder slidably connected to the inner side of the outer cylinder, and a feedback mechanism arranged inside the outer cylinder and the inner cylinder;

[0007] The feedback mechanism comprises a fixing plate fixedly connected to the outer cylinder, a sleeve fixedly connected to the fixing plate, a sliding rod slidably connected to the inner side of the sleeve, a spring fixedly connected to the upper end of the sliding rod, the upper end of the spring fixedly connected to the inner cylinder, an inclined groove is provided on the sliding rod, an inclined rod is provided in the inclined groove, contact blocks are fixedly connected to the two ends of the inclined rod respectively, a fixing block is fixedly connected to the inner side of the inner cylinder, the fixing block abuts against the contact block, and the contact surface between the fixing block and the contact block is an inclined surface;

[0008] The sliding rod and the vertical rod are connected via a connecting assembly, and an adjusting mechanism matched with the connecting assembly is arranged in the protective cover.

[0009] Preferably, the connecting assembly includes a fixed ring fixedly connected to the vertical rod, the fixed ring is rotatably connected to a rotating seat, the rotating seat is fixedly connected to a connecting rod, a sliding groove is provided at one end of the connecting rod away from the rotating seat, an arc groove is provided in the middle part of the connecting rod, a groove is provided at the lower end of the sliding rod, a limiting rod is fixedly connected in the groove, and the limiting rod is slidably connected to the sliding groove.

[0010] Preferably, the adjusting mechanism comprises a fixing frame fixedly connected to the base plate, a swing arm is rotatably connected to the fixing frame via a connecting shaft, a limiting rod two is fixedly connected to the lower end of the swing arm, the limiting rod two is slidably connected to the arc groove, a sliding groove two is provided in the middle part of the swing arm, a sliding block is slidably connected in the sliding groove two, a guide rod is rotatably connected to the sliding block, one end of the guide rod is fixedly connected to a connecting seat, the fixing frame is fixedly connected to the fixing seat, a threaded rod is rotatably connected to the fixing seat, the threaded rod is threadedly connected to the connecting seat, the fixing frame is fixedly connected to a supporting frame, a driving motor is provided on the supporting frame, and an output end of the driving motor is coaxially and fixedly connected to the threaded rod.

[0011] Preferably, two swing arms are provided, the distance between the two swing arms is greater than the thickness of the connecting rod, and the connecting rod is located between the two swing arms.

[0012] Preferably, the inclined surfaces on the contact blocks on both sides of the oblique rod are arranged parallel to each other.

[0013] Preferably, the sleeve is provided with a notch matched with the contact block.

[0014] Preferably, the protective cover, the outer cylinder, the inner cylinder and the sleeve are all provided with a channel cooperating with the connecting rod.

[0015] Preferably, positioning piles are respectively provided at the four corners of the lower end surface of the bottom plate, the lower end of the sinker rod is configured to be in a pointed cone shape, and a counterweight block is provided on the sinker rod.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. This application is provided with a connecting component and a feedback mechanism. When the ground settles, the settlement rod moves downward, and the inner tube and the outer tube are driven to move relative to each other through the connecting component. The inner tube moves downward, thereby displaying the degree of settlement and quantifying the degree of settlement. The settlement situation can be fed back in real time by observing the relative position of the inner tube, so that the construction personnel can take corresponding measures in time according to the settlement situation and reduce the impact on the progress of subsequent work.

[0018] 2. The present application is provided with an adjustment mechanism, which drives the limit rod 2 and the arc groove to slide relative to each other through the adjustment mechanism, and changes the rotation axis of the connecting rod, that is, the distance between the limit rod 2 and the fixed ring, thereby changing the relative length of the force arms on both sides of the limit rod 2 when the connecting rod rotates. Therefore, when the position of the limit rod 2 changes, the settlement degree represented by the downward stroke of the inner cylinder also changes accordingly, so that the application scope of the monitoring equipment is larger. It can be used in areas with relatively mild settlement, so that the data represented by the stroke of the inner cylinder is more accurate. It can also be used in areas with relatively serious settlement, and the latest settlement situation can be fed back in real time to avoid risks to the greatest extent and reduce the loss of engineering economy and construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of a detection device provided according to an embodiment of the present invention is shown.

[0020] Figure 2 A schematic diagram of the internal structure of a protective cover provided according to an embodiment of the present invention is shown.

[0021] Figure 3 A schematic diagram of the structural coordination of a connecting assembly, a feedback mechanism, and an adjusting mechanism provided according to an embodiment of the present invention is shown.

[0022] Figure 4 A schematic diagram of the structure of an adjustment mechanism provided according to an embodiment of the present invention is shown.

[0023] Figure 5 A partial structural schematic diagram of an adjustment mechanism provided according to an embodiment of the present invention is shown.

[0024] Figure 6 A cross-sectional view of the feedback mechanism structure provided according to an embodiment of the present invention is shown.

[0025] Figure 7 A schematic diagram of the structure of the inclined groove and the groove provided according to an embodiment of the present invention is shown.

[0026] Legend:

[0027] 1. Bottom plate; 2. Positioning pile; 3. Casing; 4. Settlement rod; 5. Protective cover; 6. Vertical rod; 7. Fixed ring; 8. Rotating seat; 9. Connecting rod; 10. Arc groove; 11. Slide groove 1; 12. Fixed frame; 13. Connecting shaft; 14. Swing arm; 15. Limit rod 2; 16. Slide groove 2; 17. Sliding block; 18. Fixed seat; 19. Threaded rod; 20. Connecting seat; 21. Driving motor; 22. Guide rod; 23. Outer cylinder; 24. Inner cylinder; 25. Sleeve; 26. Sliding rod; 27. Spring; 28. Groove; 29. ​​Limit rod 1; 30. Inclined groove; 31. Inclined rod; 32. Contact block; 33. Fixed block; 34. Notch; 35. Fixed plate; 36. Channel. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-7 , the present invention provides a technical solution:

[0030] A ground settlement deformation monitoring device for shield construction includes a bottom plate 1, a casing 3 is fixedly connected to the lower end of the bottom plate 1, a settlement rod 4 is arranged in the casing 3, the upper end of the settlement rod 4 extends to the top of the bottom plate 1 and is fixedly connected to a vertical rod 6, a protective cover 5 is arranged on the bottom plate 1 outside the vertical rod 6, an outer cylinder 23 is arranged on the bottom plate 1 outside the protective cover 5, an inner cylinder 24 is slidably connected to the inner side of the outer cylinder 23, and a feedback mechanism is arranged inside the outer cylinder 23 and the inner cylinder 24; the feedback mechanism includes a fixed plate 35 fixedly connected to the outer cylinder 23, a sleeve 25 is fixedly connected to the fixed plate 35, and the sleeve 23 is fixedly connected to the sleeve 23. A slide bar 26 is slidably connected to the inner side of the inner tube 24, a spring 27 is fixedly connected to the upper end of the slide bar 26, and the upper end of the spring 27 is fixedly connected to the inner tube 24. An inclined groove 30 is provided on the slide bar 26, and an inclined rod 31 is provided in the inclined groove 30. Contact blocks 32 are fixedly connected to both ends of the inclined rod 31, and a fixed block 33 is fixedly connected to the inner side of the inner tube 24. The fixed block 33 abuts against the contact block 32, and the contact surface between the fixed block 33 and the contact block 32 is an inclined surface. The slide bar 26 is connected to the vertical rod 6 through a connecting assembly, and an adjusting mechanism matched with the connecting assembly is provided in the protective cover 5. When the ground settles, the settlement rod 4 moves downward, and the inner cylinder 24 and the outer cylinder 23 are driven to move relative to each other through the connecting assembly. The inner cylinder 24 moves downward, thereby displaying the degree of settlement and quantifying the degree of settlement. The settlement situation can be fed back in real time by observing the relative position of the inner cylinder 24, so that construction personnel can take corresponding measures in time according to the settlement situation and reduce the impact on the progress of subsequent work. Preferably, scale lines can be set on the outer wall of the inner cylinder 24, and a variety of scale lines can be set according to different soil geology to further quantify the degree of settlement and facilitate construction personnel to observe and record.

[0031] Specifically, Figure 3 , Figure 4 and Figure 5As shown, the connecting assembly includes a fixed ring 7 fixedly connected to the vertical rod 6, a rotating seat 8 is rotatably connected to the fixed ring 7, a connecting rod 9 is fixedly connected to the rotating seat 8, a sliding groove 11 is provided at one end of the connecting rod 9 away from the rotating seat 8, an arc groove 10 is provided in the middle part of the connecting rod 9, a groove 28 is provided at the lower end of the sliding rod 26, a limiting rod 29 is fixedly connected in the groove 28, and the limiting rod 29 is slidably connected to the sliding groove 11. The adjusting mechanism includes a fixed frame 12 fixedly connected to the base plate 1, a swing arm 14 is rotatably connected to the fixed frame 12 through a connecting shaft 13, a limit rod 2 15 is fixedly connected to the lower end of the swing arm 14, the limit rod 2 15 is slidably connected to the arc groove 10, a slide groove 2 16 is provided in the middle part of the swing arm 14, a sliding block 17 is slidably connected in the slide groove 16, a guide rod 22 is rotatably connected to the sliding block 17, one end of the guide rod 22 is fixedly connected to a connecting seat 20, a fixed seat 18 is fixedly connected to the fixed frame 12, a threaded rod 19 is rotatably connected to the fixed seat 18, the threaded rod 19 is threadedly connected to the connecting seat 20, a support frame is fixedly connected to the fixed frame 12, a drive motor 21 is provided on the support frame, and the output end of the drive motor 21 is coaxially fixedly connected to the threaded rod 19. By setting the adjustment mechanism, the rotation axis of the connecting rod 9, that is, the distance between the limit rod 15 and the fixing ring 7, can be changed, thereby changing the relative length of the force arm on both sides of the limit rod 15 when the connecting rod 9 rotates. When the distance between the limit rod 15 and the fixing ring 7 decreases, the downward movement of the settlement rod 4 will increase the stroke of the inner cylinder 24, that is, it is applied to areas with harder soil or less settlement. By amplifying the stroke of the inner cylinder 24, the data can be made more accurate. When the distance between the limit rod 15 and the fixing ring 7 increases, the downward movement of the settlement rod 4 will correspondingly reduce the stroke of the inner cylinder 24, that is, it is applied to areas with softer soil or more serious settlement, to avoid exceeding the threshold of the stroke of the inner cylinder 24, thereby expanding the scope of application of the monitoring equipment.

[0032] Specifically, Figure 5 As shown, there are two swing arms 14, and the distance between the two swing arms 14 is greater than the thickness of the connecting rod 9, and the connecting rod 9 is located between the two swing arms 14. There is a certain distance between the two swing arms 14, so that there is also a certain distance between the two sliding blocks 17, so as to prevent the connecting seat 20 from rotating when moving.

[0033] Specifically, Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the inclined surfaces on the contact blocks 32 on both sides of the inclined rod 31 are arranged parallel to each other. The sleeve 25 is provided with a notch 34 that matches the contact block 32. The protective cover 5, the outer cylinder 23, the inner cylinder 24 and the sleeve 25 are all provided with a channel 36 that matches the connecting rod 9. Preferably, the inclined rod 31, the contact block 32 and the fixed block 33 should be staggered with the connecting rod 9, that is, the fixed block 33 should avoid the position of the channel 36 to avoid blocking the rotation of the connecting rod 9.

[0034] Specifically, Figure 1 and Figure 2 As shown, positioning piles 2 are respectively arranged at the four corners of the lower end surface of the bottom plate 1, the lower end of the settlement rod 4 is set to a pointed cone, and a counterweight is arranged on the settlement rod 4. The setting of the counterweight can minimize the influence of the connection rod 9 and the gravity of the feedback mechanism on the settlement rod 4, and ensure that the downward movement of the settlement rod 4 is as close as possible to the actual settlement situation of the monitoring area.

[0035] In summary, the ground settlement deformation monitoring device for shield construction provided in this embodiment, when in use, first fix the monitoring device in the area to be monitored by the positioning pile 2, and place the casing 3 and the settlement rod 4 below the surface. When the ground settles, the settlement rod 4 located in the casing 3 will move downward under the action of its own gravity, so that the vertical rod 6 and the fixing ring 7 move downward, driving the connecting rod 9 to rotate, thereby driving the sliding rod 26 to move upward. When the sliding rod 26 moves upward, the contact block 32 can only move in the horizontal direction due to the limitation of the notch 34, so that the inclined rod 31 and the inclined groove 30 slide relative to each other, and at the same time, the contact blocks 32 on both sides of the inclined rod 31 move in the horizontal direction, so that the contact block 32 and the fixing block 33 are moved horizontally. Relative sliding, thereby driving the fixed block 33 and the inner cylinder 24 to move downward, so that the inner cylinder 24 contracts toward the inside of the outer cylinder 23, and at the same time the spring 27 is compressed, and the relative movement stroke between the inner cylinder 24 and the outer cylinder 23 is used to display the degree of ground settlement, and the threaded rod 19 is driven to rotate by the driving motor 21, thereby driving the connecting seat 20 to move, and then driving the sliding block 17 to move through the guide rod 22, so that the swing arm 14 is deflected, and the limit rod 15 and the arc groove 10 are driven to slide relative to each other, by changing the rotation axis of the connecting rod 9, that is, the distance between the limit rod 15 and the fixed ring 7, and then changing the relative length of the force arm on both sides of the limit rod 15 when the connecting rod 9 rotates, so that the downward movement stroke of the inner cylinder 24 can be used to represent a larger range of settlement degrees.

[0036] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ground settlement deformation monitoring device for shield construction, comprising a bottom plate (1), characterized in that: The lower end of the bottom plate (1) is fixedly connected to a sleeve (3), a sinking rod (4) is arranged inside the sleeve (3), the upper end of the sinking rod (4) extends to the top of the bottom plate (1) and is fixedly connected to a vertical rod (6), a protective cover (5) is arranged on the bottom plate (1) outside the vertical rod (6), an outer cylinder (23) is arranged on the bottom plate (1) outside the protective cover (5), an inner cylinder (24) is slidably connected to the inner side of the outer cylinder (23), and feedback mechanisms are arranged inside the outer cylinder (23) and the inner cylinder (24); The feedback mechanism comprises a fixing plate (35) fixedly connected to the outer cylinder (23), a sleeve (25) fixedly connected to the fixing plate (35), a sliding rod (26) slidably connected to the inner side of the sleeve (25), a spring (27) fixedly connected to the upper end of the sliding rod (26), an upper end of the spring (27) fixedly connected to the inner cylinder (24), an inclined groove (30) provided on the sliding rod (26), an inclined rod (31) provided in the inclined groove (30), contact blocks (32) fixedly connected to the two ends of the inclined rod (31), a fixing block (33) fixedly connected to the inner side of the inner cylinder (24), the fixing block (33) abutting against the contact block (32), and the contact surface between the fixing block (33) and the contact block (32) is an inclined surface; The sliding rod (26) and the vertical rod (6) are connected via a connecting assembly, and an adjusting mechanism matching the connecting assembly is provided in the protective cover (5).

2. The ground subsidence deformation monitoring device for shield construction according to claim 1 is characterized in that: The connecting assembly comprises a fixing ring (7) fixedly connected to the vertical rod (6); a rotating seat (8) is rotatably connected to the fixing ring (7); a connecting rod (9) is fixedly connected to the rotating seat (8); a sliding groove (11) is provided at one end of the connecting rod (9) away from the rotating seat (8); an arc groove (10) is provided at the middle part of the connecting rod (9); a groove (28) is provided at the lower end of the sliding rod (26); a limiting rod (29) is fixedly connected in the groove (28); and the limiting rod (29) is slidably connected to the sliding groove (11).

3. The ground subsidence deformation monitoring device for shield construction according to claim 2 is characterized in that: The adjusting mechanism comprises a fixing frame (12) fixedly connected to the bottom plate (1), a swing arm (14) rotatably connected to the fixing frame (12) via a connecting shaft (13), a second limiting rod (15) fixedly connected to the lower end of the swing arm (14), the second limiting rod (15) being slidably connected to the arc groove (10), a second sliding groove (16) being provided in the middle part of the swing arm (14), a sliding block (17) being slidably connected to the inside of the second sliding groove (16), and a second sliding block (17) being rotatably connected to the sliding block (17). A guide rod (22) is connected, one end of the guide rod (22) is fixedly connected to a connecting seat (20), the fixing frame (12) is fixedly connected to a fixing seat (18), a threaded rod (19) is rotatably connected to the fixing seat (18), the threaded rod (19) is threadedly connected to the connecting seat (20), the fixing frame (12) is fixedly connected to a supporting frame, the supporting frame is provided with a driving motor (21), and the output end of the driving motor (21) is coaxially fixedly connected to the threaded rod (19).

4. The ground subsidence deformation monitoring device for shield construction according to claim 3 is characterized in that: Two swing arms (14) are provided, the distance between the two swing arms (14) is greater than the thickness of the connecting rod (9), and the connecting rod (9) is located between the two swing arms (14).

5. The ground subsidence deformation monitoring device for shield construction according to claim 2, characterized in that: The inclined surfaces on the contact blocks (32) on both sides of the inclined rod (31) are arranged parallel to each other.

6. The ground subsidence deformation monitoring device for shield construction according to claim 5, characterized in that: The sleeve (25) is provided with a notch (34) which matches the contact block (32).

7. The ground subsidence deformation monitoring device for shield construction according to claim 2, characterized in that: The protective cover (5), the outer cylinder (23), the inner cylinder (24) and the sleeve (25) are all provided with a channel (36) that matches the connecting rod (9).

8. The ground subsidence deformation monitoring device for shield construction according to claim 1, characterized in that: Positioning piles (2) are respectively arranged at the four corners of the lower end surface of the bottom plate (1), the lower end of the sinker rod (4) is arranged in a pointed cone shape, and a counterweight block is arranged on the sinker rod (4).

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