A monitoring device and method for the impact of deep foundation pit excavation on subway vertical deformation

Abstract

The present invention discloses a monitoring device for the influence of deep foundation pit excavation on the vertical deformation of a subway, comprising a pillar, a sliding seat slidably provided on the pillar, a sliding groove corresponding to the sliding seat provided on the pillar, a first monitoring plate fixedly provided on the sliding seat, and a limiting mechanism corresponding thereto provided on the sliding seat, a comparison rod fixedly provided on the side wall of the pillar, the comparison rod connected to the pillar via a connecting mechanism, a second monitoring plate slidably provided on the side wall of the comparison rod, the second monitoring plate slidably provided on the comparison rod via a slider, a chute corresponding to the slider provided on the side wall of the comparison rod, a control mechanism corresponding to the slider provided in the chute. The present invention can quickly measure the height of a subway tunnel and the height of a foundation pit slope, and can quickly monitor the vertical deformation of the subway through comparison, thereby greatly improving the accuracy of monitoring.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit construction, and in particular to a device and method for monitoring the influence of deep foundation pit excavation on the vertical deformation of a subway. Background Art

[0002] Subway construction often traverses bustling urban areas, driving the development of residential, commercial, and municipal projects along the lines, creating a unique economic development zone. This construction inevitably involves extensive deep foundation pit excavation, which can cause vertical uplift and lateral deformation in existing subway tunnels, particularly near deep pits. This poses a significant threat to the safe and effective operation of subway systems.

[0003] However, in the existing technology, it is difficult to directly monitor the height changes of the subway and the foundation pit slope, resulting in poor monitoring of the vertical deformation of the subway, which greatly reduces the accuracy of monitoring. To this end, we propose a monitoring device and method for the impact of deep foundation pit excavation on the vertical deformation of the subway to solve the above problem. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing technology, such as: it is difficult to monitor the height changes of traditional subways and foundation pit slopes, resulting in poor monitoring effect, and a monitoring device for the impact of deep foundation pit excavation on the vertical deformation of subways is proposed.

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

[0006] A monitoring device for the impact of deep foundation pit excavation on the vertical deformation of a subway includes a pillar, a slide is slidably provided on the pillar, and a sliding groove corresponding to the slide is opened on the pillar, a first monitoring plate is fixedly provided on the slide, and a corresponding limiting mechanism is provided on the slide, a control rod is fixedly provided on the side wall of the pillar, the control rod is connected to the pillar through a connecting mechanism, a second monitoring plate is slidably provided on the side wall of the control rod, the second monitoring plate is slidably set on the control rod through a slider, a slide groove corresponding to the slider is opened on the side wall of the control rod, and a control mechanism corresponding to the slider is provided in the slide groove.

[0007] Preferably, the limiting mechanism includes two limiting blocks, and telescopic grooves corresponding to the limiting blocks are provided on both side walls of the sliding seat. The two limiting blocks are respectively slidably arranged in the two telescopic grooves, and the two limiting blocks are connected to the inner wall of the telescopic groove through a first spring. Several groups of limiting grooves corresponding to the limiting blocks are arranged in parallel on both side walls of the sliding groove, and each limiting block is provided with a corresponding toggle mechanism.

[0008] Preferably, the toggle mechanism includes two toggle rods, which are respectively fixed on the side walls of the two limiting blocks, and both of the toggle rods slide through the side walls of the slide seat, and two strip-shaped sliding openings corresponding to the toggle rods are symmetrically opened on the side walls of the slide seat.

[0009] Preferably, the connecting mechanism includes an inserting plate, which is fixedly arranged on a side wall of the control rod close to the pillar. A slot corresponding to the inserting plate is opened on the side wall of the pillar, and a fixing mechanism corresponding to the inserting plate is arranged in the slot.

[0010] Preferably, the fixing mechanism includes two card blocks, and storage grooves corresponding to the card blocks are provided on both side walls of the slot, and the two card blocks are slidably arranged in the two storage grooves respectively, and the two card blocks are connected to the inner wall of the storage groove through a second spring, and slots corresponding to the card blocks are provided on both side walls of the plug board, and the side walls of the two card blocks close to the slot opening are inclined, and pull rods are fixed on the side walls of the two card blocks, and the two pull rods are slid through the side walls of the pillar, and two strip-shaped pulling openings corresponding to the pull rods are provided on the side walls of the pillar.

[0011] Preferably, the control mechanism includes a threaded rod, which is rotatably arranged in a slide groove and rotatably passes through a slider. A threaded through hole corresponding to the threaded rod is provided on the slider. A helical gear is fixedly sleeved on one end of the threaded rod, and a transmission gear corresponding to the helical gear is rotatably arranged on the side wall of the slide groove. The transmission gear is rotatably arranged in the slide groove through a rotating rod, and the transmission gear is meshed with the helical gear. The rotating rod is rotatably passed through the side wall of the control rod, and a rotating handle is fixedly provided on the end of the rotating rod away from the transmission gear.

[0012] A method for monitoring the impact of deep foundation pit excavation on subway vertical deformation includes the following steps:

[0013] S1, pull the pull rod to drive the two card blocks to slide out of the card slot. After releasing the fixation of the plug plate in the slot, the fixation of the control rod on the pillar can be released, so that the control rod can be removed from the pillar and moved to the height sampling position.

[0014] S2, rotating the handle drives the transmission gear to rotate, and through the cooperation of the bevel gear, drives the threaded rod to rotate, thereby driving the second monitoring plate to move up and down, and slidingly adjust the second monitoring plate to correspond to the upper wall of the subway tunnel.

[0015] S3, push the lever to drive the limiting block to slide out of the limiting groove, thereby releasing the limiting fixation of the slide in the sliding groove, and then slide the slide to drive the first monitoring plate to slide. After adjusting the first monitoring plate to correspond to the height of the foundation pit slope, release the lever to allow the limiting block to be re-engaged in the limiting groove to complete the fixation of the slide.

[0016] S4, reinsert the inserting plate on the control rod into the slot until the card block is re-engaged in the card slot on the inserting plate, thereby completing the fixation of the control rod on the pillar.

[0017] S5. By comparing the changes in the position and distance between the first monitoring plate and the second monitoring plate multiple times, the vertical deformation of the subway can be monitored.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: through the cooperation of the limiting block and the limiting groove, the sliding seat is restricted and fixed, which is convenient for quickly fixing the first monitoring plate; by setting the dial rod, the limiting block is controlled, and the dial rod can be toggled to drive the limiting block to slide out of the limiting groove, thereby releasing the fixation of the sliding seat, and conveniently and quickly adjusting the position of the first monitoring plate to correspond to the position of the top of the slope; through the cooperation of the transmission gear and the bevel gear, it is achieved that the threaded rod can be driven to rotate by rotating the handle, so that the second monitoring plate can be controlled to slide up and down, and the second monitoring plate can be quickly adjusted to correspond to the top of the subway tunnel; through the cooperation of the card block and the card slot, the plug plate is restricted and fixed, thereby realizing the rapid installation of the control rod on the pillar, facilitating the comparative monitoring of the two monitoring plates, thereby accurately completing the vertical deformation monitoring of the subway, and greatly improving the monitoring effect; through the provision of the pull rod, the card block is controlled, and pulling the pull rod can drive the card block to slide out of the card slot, so that the control rod can be quickly removed from the pillar, which is convenient for sampling the height of the subway tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a device for monitoring the impact of deep foundation pit excavation on vertical deformation of subways proposed by the present invention;

[0020] Figure 2 This is a schematic side view of the structure of a monitoring device for the impact of deep foundation pit excavation on subway vertical deformation proposed by the present invention;

[0021] Figure 3 for Figure 1 Schematic diagram of the structure at A in the middle;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure at point B.

[0023] In the figure: 1 pillar, 2 slide, 3 first monitoring plate, 4 control rod, 5 second monitoring plate, 6 slider, 7 pull rod, 8 turning handle, 9 sliding groove, 10 plug plate, 11 slot, 12 threaded rod, 13 sliding groove, 14 bevel gear, 15 transmission gear, 16 turning rod, 17 telescopic slot, 18 limiting block, 19 first spring, 20 shift rod, 21 card block, 22 storage slot, 23 second spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figure 1-4A monitoring device for the influence of deep foundation pit excavation on the vertical deformation of the subway includes a pillar 1, a slide seat 2 is slidably provided on the pillar 1, and a sliding groove 9 corresponding to the slide seat 2 is opened on the pillar 1, a first monitoring plate 3 is fixedly provided on the slide seat 2, and a limiting mechanism corresponding thereto is provided on the slide seat 2, and the limiting mechanism includes two limiting blocks 18, and telescopic grooves 17 corresponding to the limiting blocks 18 are opened on both side walls of the slide seat 2. The two limiting blocks 18 are respectively slidably provided in the two telescopic grooves 17, and the two limiting blocks 18 are connected to the inner wall of the telescopic groove 17 by a first spring 19. Several groups of limiting grooves corresponding to the limiting blocks 18 are arranged in parallel on both side walls of the sliding groove 9, and each limiting block 18 is provided with a corresponding toggle mechanism, which includes two The two levers 20 are fixed on the side walls of the two limiting blocks 18, and the two levers 20 are slidably arranged in the side walls of the slide 2. The side walls of the slide 2 are symmetrically provided with two strip-shaped sliding openings corresponding to the levers 20. The connecting mechanism includes an inserting plate 10, which is fixed on the side wall of the control rod 4 close to the pillar 1. A slot 11 corresponding to the inserting plate 10 is provided on the side wall of the pillar 1. A fixing mechanism corresponding to the inserting plate 10 is provided in the slot 11. The fixing mechanism includes two card blocks 21. Receiving grooves 22 corresponding to the card blocks 21 are provided on the side walls of the slot 11 on both sides. The two card blocks 21 are respectively slidably arranged in the two receiving grooves 22, and the two card blocks 21 are connected to the inner wall of the receiving groove 22 by a second spring 23. Card slots corresponding to the card blocks 21 are provided on both side walls of the plug board 10. The side walls of the two card blocks 21 close to the openings of the slots 11 are inclined, and pull rods 7 are fixedly provided on the side walls of the two card blocks 21. The two pull rods 7 slide through the side walls of the pillar 1. Two strip-shaped pulling openings corresponding to the pull rods 7 are provided on the side walls of the pillar 1. A control rod 4 is fixedly provided on the side wall of the pillar 1. The control rod 4 is connected to the pillar 1 through a connecting mechanism. A second monitoring plate 5 is slidably provided on the side wall of the control rod 4. The second monitoring plate 5 is slidably provided on the control rod 4 through a slider 6. A slide groove 13 corresponding to the slider 6 is provided on the side wall of the control rod 4. A control mechanism corresponding to the slider 6 is provided in the slide groove 13. The control mechanism includes a threaded rod 12, a threaded rod 12, and a threaded rod 13. The rod 12 is rotatably set in the slide groove 13, and the threaded rod 12 is rotatably set through the slider 6. The slider 6 is provided with a threaded through hole corresponding to the threaded rod 12. One end of the threaded rod 12 is fixedly sleeved with a bevel gear 14. A transmission gear 15 corresponding to the bevel gear 14 is rotatably set on the side wall of the slide groove 13. The transmission gear 15 is rotatably set in the slide groove 13 through the rotating rod 16. The transmission gear 15 is meshed with the bevel gear 14. The rotating rod 16 is rotatably set through the side wall of the control rod 4, and the end of the rotating rod 16 away from the transmission gear 15 is fixedly provided with a rotating handle 8. The cooperation between the limiting block 18 and the limiting groove is realized to limit and fix the slide 2, which is convenient for quickly fixing the first monitoring plate 3. The control of the limiting block 18 is realized by setting it on the dial rod 20.By toggling the lever 20, the limiting block 18 can be driven to slide out of the limiting groove, thereby releasing the fixation of the slide 2, making it convenient to quickly adjust the position of the first monitoring plate 3 to correspond to the position of the top of the slope. By cooperating with the transmission gear 15 and the bevel gear 14, the turning handle 8 can be used to drive the threaded rod 12 to rotate, thereby controlling the second monitoring plate 5 to slide up and down, and thus quickly adjusting the second monitoring plate 5 to correspond to the top of the subway tunnel. By cooperating with the clamping block 21 and the clamping groove, the plug-in plate 10 is restricted and fixed, thereby realizing the rapid installation of the control rod 4 on the pillar 1, facilitating the comparative monitoring of the two monitoring plates, thereby accurately completing the vertical deformation monitoring of the subway and greatly improving the monitoring effect. By setting the pull rod 7, the clamping block 21 is controlled. Pulling the pull rod 7 can drive the clamping block 21 to slide out of the clamping groove, thereby quickly removing the control rod 4 from the pillar 1, making it convenient to sample the height of the subway tunnel.

[0026] A method for monitoring the impact of deep foundation pit excavation on subway vertical deformation includes the following steps:

[0027] S1, pull the pull rod 7 to drive the two blocks 21 to slide out of the slots, release the fixing of the inserting plate 10 in the slot 11, and then release the fixing of the control rod 4 on the pillar 1, so that the control rod 4 can be removed from the pillar 1 and moved to the height sampling position.

[0028] S2, rotating the handle 8 drives the transmission gear 15 to rotate, and through the cooperation of the bevel gear 14 drives the threaded rod 12 to rotate, thereby driving the second monitoring plate 5 to move up and down, and slidingly adjusting the second monitoring plate 5 to correspond to the upper wall height of the subway tunnel.

[0029] S3, move the lever 20 to drive the limiting block 18 to slide out of the limiting groove, thereby releasing the limiting fixation of the slide 2 in the sliding groove 9, and then slide the slide 2 to drive the first monitoring plate 3 to slide. After adjusting the first monitoring plate 3 to correspond to the height of the foundation pit slope, release the lever 20 to allow the limiting block 18 to be re-engaged in the limiting groove to complete the fixation of the slide 2.

[0030] S4, reinsert the inserting plate 10 on the control rod 4 into the slot 11 until the clamping block 21 is clamped into the clamping slot on the inserting plate 10 again, thereby completing the fixation of the control rod 4 on the pillar 1.

[0031] S5, by comparing the changes in the position and distance between the first monitoring plate 3 and the second monitoring plate 5 multiple times, the vertical deformation of the subway can be monitored.

[0032] In the present invention, when monitoring the vertical deformation of the subway, the pull rod 7 is pulled to drive the two card blocks 21 to slide out of the card slot. After the fixing of the plug plate 10 in the slot 11 is released, the fixation of the control rod 4 on the pillar 1 can be released, so that the control rod 4 can be removed from the pillar 1 and moved to the subway height sampling position. The turning handle 8 drives the transmission gear 15 to rotate, and the threaded rod 12 is driven to rotate through the cooperation of the bevel gear 14, thereby driving the second monitoring plate 5 to slide up and down, so that the second monitoring plate 5 can be adjusted to correspond to the height of the upper wall of the subway tunnel. Then, the dial rod 20 is toggled to drive the limiting block 18 to slide out of the limiting slot. Thereby, the restriction and fixation of the slide 2 in the sliding groove 9 is released, and the sliding slide 2 drives the first monitoring plate 3 to slide. After adjusting the first monitoring plate 3 to correspond to the height of the foundation pit slope, the lever 20 is released to allow the restriction block 18 to be re-engaged in the restriction groove, completing the fixation of the slide 2, and the plug plate 10 on the control rod 4 is reinserted into the slot 11 until the block 21 is re-engaged in the slot on the plug plate 10, thereby completing the fixation of the control rod 4 on the pillar 1. By repeatedly comparing the changes in the position and distance between the first monitoring plate 3 and the second monitoring plate 5, the vertical deformation of the subway can be monitored, which greatly improves the accuracy of monitoring.

[0033] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A monitoring device for the influence of deep foundation pit excavation on the vertical deformation of a subway, comprising a support (1), characterized in that: A slide seat (2) is slidably provided on the pillar (1), and a sliding groove (9) corresponding to the slide seat (2) is provided on the pillar (1), a first monitoring plate (3) is fixedly provided on the slide seat (2), and a limiting mechanism corresponding thereto is provided on the slide seat (2), a control rod (4) is fixedly provided on the side wall of the pillar (1), the control rod (4) is connected to the pillar (1) through a connecting mechanism, a second monitoring plate (5) is slidably provided on the side wall of the control rod (4), the second monitoring plate (5) is slidably provided on the control rod (4) through a slider (6), a slide groove (13) corresponding to the slider (6) is provided on the side wall of the control rod (4), and a control mechanism corresponding to the slider (6) is provided in the slide groove (13); The connecting mechanism comprises an inserting plate (10), the inserting plate (10) being fixedly arranged on a side wall of the control rod (4) close to the pillar (1), a slot (11) corresponding to the inserting plate (10) being provided on the side wall of the pillar (1), and a fixing mechanism corresponding to the inserting plate (10) being provided in the slot (11); The fixing mechanism includes two card blocks (21), and receiving grooves (22) corresponding to the card blocks (21) are provided on both side walls of the slot (11). The two card blocks (21) are respectively slidably arranged in the two receiving grooves (22), and the two card blocks (21) are connected to the inner walls of the receiving grooves (22) through second springs (23). Card slots corresponding to the card blocks (21) are provided on both side walls of the plug board (10), and the side walls of the two card blocks (21) close to the opening of the slot (11) are inclined, and pull rods (7) are fixedly provided on the side walls of the two card blocks (21), and the two pull rods (7) are slidably passed through the side wall of the pillar (1), and two strip-shaped pulling openings corresponding to the pull rods (7) are provided on the side wall of the pillar (1).

2. The device for monitoring the impact of deep foundation pit excavation on subway vertical deformation according to claim 1 is characterized in that: The limiting mechanism includes two limiting blocks (18), and telescopic grooves (17) corresponding to the limiting blocks (18) are provided on both side walls of the slide seat (2). The two limiting blocks (18) are respectively slidably arranged in the two telescopic grooves (17), and the two limiting blocks (18) are connected to the inner wall of the telescopic groove (17) through a first spring (19). A plurality of groups of limiting grooves corresponding to the limiting blocks (18) are arranged in parallel on both side walls of the sliding groove (9), and each limiting block (18) is provided with a corresponding toggle mechanism.

3. The device for monitoring the impact of deep foundation pit excavation on subway vertical deformation according to claim 2 is characterized in that: The toggle mechanism comprises two toggle rods (20), the two toggle rods (20) being fixedly arranged on the side walls of the two limiting blocks (18), and the two toggle rods (20) being slidably arranged through the side walls of the slide seat (2), and two strip-shaped sliding openings corresponding to the toggle rods (20) being symmetrically provided on the side walls of the slide seat (2).

4. The device for monitoring the impact of deep foundation pit excavation on subway vertical deformation according to claim 1 is characterized in that: The control mechanism includes a threaded rod (12), the threaded rod (12) is rotatably arranged in a slide groove (13), and the threaded rod (12) is rotatably arranged through a slider (6), the slider (6) is provided with a threaded through hole corresponding to the threaded rod (12), one end of the threaded rod (12) is fixedly sleeved with a bevel gear (14), a transmission gear (15) corresponding to the bevel gear (14) is rotatably arranged on the side wall of the slide groove (13), the transmission gear (15) is rotatably arranged in the slide groove (13) through a rotating rod (16), the transmission gear (15) is meshed with the bevel gear (14), the rotating rod (16) is rotatably arranged through the side wall of the control rod (4), and a rotating handle (8) is fixedly arranged on the end of the rotating rod (16) away from the transmission gear (15).

5. A monitoring method using the monitoring device for the effect of deep foundation pit excavation on vertical deformation of a subway as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1, pull the pull rod (7) to drive the two card blocks (21) to slide out of the card slot, release the fixing of the insert plate (10) in the slot (11), and then release the fixing of the control rod (4) on the pillar (1), so that the control rod (4) can be removed from the pillar (1) and moved to the height sampling position; S2, rotating the handle (8) to drive the transmission gear (15) to rotate, and driving the threaded rod (12) to rotate through the cooperation of the bevel gear (14), thereby driving the second monitoring plate (5) to move up and down, and slidingly adjusting the second monitoring plate (5) to correspond to the upper wall of the subway tunnel; S3, the lever (20) is moved to drive the limiting block (18) to slide out of the limiting groove, thereby releasing the limiting fixation of the slide (2) in the sliding groove (9), and then the slide (2) is moved to drive the first monitoring plate (3) to slide, and after the first monitoring plate (3) is adjusted to correspond to the height of the foundation pit slope, the lever (20) is released to allow the limiting block (18) to be re-engaged in the limiting groove, thereby completing the fixation of the slide (2); S4, reinsert the inserting plate (10) on the control rod (4) into the slot (11) until the card block (21) is re-engaged in the card slot on the inserting plate (10), thereby completing the fixation of the control rod (4) on the pillar (1); S5, by repeatedly comparing the changes in the position and distance between the first monitoring plate (3) and the second monitoring plate (5), the vertical deformation of the subway can be monitored.

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