A pit side ground settlement monitoring device

Abstract

The application relates to the field of building engineering technology, in particular to a pit-side foundation settlement monitoring device, which comprises a pile body, a monitoring assembly and a measuring marker, the monitoring assembly further comprises a plurality of alternately rigidly connected connecting rods and monitoring rings, the pile body is inserted at the position of an elevation reference point, the connecting rods and the monitoring rings extend along the direction perpendicular to the pile body, and the connecting rods at one end are rigidly fixed on the pile body, a trigger switch and a warning lamp are arranged on the monitoring ring, a middle rod is arranged in the monitoring ring to prevent the influence of the surrounding environment, the trigger switch is arranged on the middle rod, the measuring marker is provided with an avoiding groove which avoids the middle rod and is arranged through the middle rod, the avoiding groove extends along the axial direction of the measuring marker, when the ground subsides, the measuring marker descends along with the ground subsidence, after the subsidence reaches a preset value, the measuring marker triggers the trigger switch on the monitoring ring, and the warning lamp starts to warn, the application has the advantages that the pit-side foundation settlement can be intelligently monitored.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, and in particular to a pit edge foundation settlement monitoring device. Background Technology

[0002] An excavation pit is a pit dug at the designed location of a building's foundation, according to the base elevation and foundation dimensions. Commonly known as a foundation, it is used to reinforce the soil in situ for the building. During the excavation of the excavation pit, the continuous excavation and hollowing out of the soil causes soil loosening and deformation, changes in groundwater level, soil cracking and compression, and, combined with factors such as precipitation, can easily lead to settlement of the ground around the excavation pit (i.e., the ground surface).

[0003] To promptly understand soil displacement caused by foundation pit excavation and ensure the safety of the foundation pit, surrounding roads, and buildings, ground settlement around the foundation pit is monitored. A common method for monitoring foundation settlement around foundation pits involves selecting several fixed locations on the ground around the pit and placing settlement point markers (hemispherical stainless steel markers, such as those embedded with metal nails) at these locations. These markers record ground settlement and provide reference points. Outside the settlement boundary point where the foundation pit settlement is zero, and in a structurally stable location, three closely spaced elevation benchmarks are established. A precision level instrument of at least S1 is set up at one of these benchmarks, and the ground elevation of the settlement point markers is measured with second-order leveling accuracy. After each measurement, the measurement data is recorded, and the settlement amount at each settlement point is calculated. This method requires monitoring personnel to statistically analyze and calculate monitoring data, has low automation, and increases the workload of staff. Summary of the Invention

[0004] To address the aforementioned problems, this application provides a pit-edge foundation settlement monitoring device. This solves the problem of low intelligence in existing ground settlement monitoring technologies.

[0005] The technical solution for the pit edge foundation settlement monitoring device provided in this application is as follows: A pit-edge foundation settlement monitoring device, comprising A pile body, which is used to fix an elevation benchmark; The monitoring component includes multiple connecting rods, multiple monitoring rings that are rigidly connected to the connecting rods alternately, a trigger switch fixed on the monitoring ring, and an alarm light electrically connected to the trigger switch, wherein the connecting rods and the monitoring rings extend in a direction perpendicular to the pile body, and one end of the connecting rod is rigidly fixed to the pile body; A measuring target is movably inserted into the monitoring ring and is used to be buried in the ground. The measuring target triggers the trigger switch after the ground settlement reaches a set value, causing the warning light to illuminate.

[0006] By adopting the above technical solution, when monitoring the foundation at the edge of the pit is required, measuring markers are buried at ground settlement monitoring points, and the piles are fixed on the elevation benchmark until the connecting rod and monitoring ring of the monitoring component reach the set height for settlement monitoring. Subsequently, if settlement occurs at the edge of the pit and the settlement amount reaches the preset value, the measuring marker triggers the trigger switch on the monitoring ring, and the warning light starts to illuminate, promptly notifying staff to take appropriate action. This eliminates the need for staff to measure settlement data, calculate results, and then take action, making it more intelligent.

[0007] Optionally, it includes an auxiliary pile located around the pile body and fixed in a non-settlement position, and a support rod with a first end fixed to the auxiliary pile body, the second end of the support rod being connected to the connecting rod away from the pile body.

[0008] By adopting the above technical solution, the connecting rod and monitoring ring at the end furthest from the pile can be suspended in the air. The connecting rod closest to the pile is connected to the pile, while the connecting rod furthest from the pile is supported by a support rod. In this way, the downward tilting tendency of the connecting rod and monitoring ring furthest from the pile due to gravity is eliminated as much as possible, so that the connecting rod and monitoring ring are kept in a horizontal position as much as possible.

[0009] Optionally, the support rod is thicker in the middle and thinner at both ends.

[0010] By adopting the above technical solution, the support rod itself is less likely to deform due to gravity.

[0011] Optionally, the first end of the support rod is lower than the second end, and the support rod and the monitoring component form two sides of a triangle, with the imaginary line connecting the pile body and the auxiliary pile body forming the other side of the triangle.

[0012] By adopting the above technical solution, the support rod tilts upward from the auxiliary pile to support the monitoring component, forming two sides of a triangle with the monitoring component. The overall structure is stable, and the support rod plays a relatively stable fixing role for the connecting rod far away from the pile.

[0013] Optionally, it also includes a straightening assembly for straightening the pile body, the straightening assembly including a spirit level installed on the top of the pile body and a telescopic rod with its first end hinged to the pile body and located on the opposite side of the connecting rod, the second end of the telescopic rod being installed on the ground.

[0014] By adopting the above technical solution, when the verticality of the pile does not meet the requirements, i.e., the bubble level is not in the center position, the verticality of the pile can be adjusted by adjusting the length of the telescopic rod. The straightening component is used to center the bubble level, minimizing the risk of the pile tilting to one side due to a shift in the center of gravity after connection with the monitoring component. Furthermore, it forms two triangular support structures in different orientations with the support rod, maximizing the stability of the pile and the monitoring component.

[0015] Optionally, the straightening assembly further includes a counterweight hinged to the second end of the telescopic rod, the counterweight being placed on the ground.

[0016] By adopting the above technical solution, the structure is simple and the construction is convenient, which further improves the stability of the pit edge foundation settlement monitoring device.

[0017] Optionally, the trigger switch is fixed to the monitoring ring via a central rod, the central rod being located in the middle of the monitoring ring, and both ends of the central rod being fixed to the monitoring ring.

[0018] By adopting the above technical solution and placing the trigger switch inside the monitoring ring, false alarms caused by accidental triggering of the trigger switch due to the complex construction environment and numerous surrounding debris are avoided as much as possible.

[0019] Optionally, the measuring mark has a clearance groove that avoids and passes through the intermediate rod, and the clearance groove extends along the axial direction of the measuring mark.

[0020] By adopting the above technical solution, the pit-side foundation settlement monitoring device can be pre-assembled at the processing plant. During assembly, when installing the measuring marker and monitoring components, the measuring marker is first inserted into the monitoring ring, and then the intermediate rod is inserted into the clearance groove and fixed. This setup results in a simple, compact structure that is easy to use.

[0021] Optionally, the measuring mark is provided with scale lines, and the monitoring ring is provided with a baseline.

[0022] By adopting the above technical solution, when the measuring mark is buried, the burial depth can be determined by the scale line; when the foundation settles, the scale line moves downward with the measuring mark, and the position of the monitoring ring remains unchanged. Settlement data before reaching the critical point can be read at any time. When reading data manually, the use of a level instrument is eliminated, saving time and effort.

[0023] Optionally, the pile body is provided with a ground alignment line.

[0024] By adopting the above technical solution, when the pile body is aligned with the ground and is flush with or slightly buried in the ground, the installation of the pile body is stopped to ensure the installation height of the pile body and the stability of the foundation settlement monitoring device at the pit edge.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The pit edge foundation settlement monitoring device proposed in this application is equipped with a trigger switch and an alarm light electrically connected to the trigger switch in the monitoring ring. The measuring marker is inserted into the monitoring ring. After the measuring marker descends to a preset value with the foundation settlement, the measuring marker triggers the trigger switch on the monitoring ring, and the alarm light is activated. This can promptly notify the staff to take appropriate action, saving the staff from measuring settlement data, calculating the results, and then taking action, making it more intelligent.

[0026] 2. The pit edge foundation settlement monitoring device proposed in this application is equipped with auxiliary piles and support rods. The connecting rod closest to the pile is connected to the pile, and the connecting rod farther from the pile is supported by the support rod. This can keep the connecting rod and the monitoring ring in a horizontal position as much as possible. The support rod and the monitoring component form two sides of a triangle. A straightening component is set at the pile. By straightening the pile and the monitoring component, the problem of tilting to one side due to the shift of the center of gravity after the pile and the monitoring component are connected is avoided as much as possible. Moreover, it forms two triangular support structures in different orientations with the support rod, which can improve the stability of the pile and the monitoring component as much as possible.

[0027] 3. The pit-side foundation settlement monitoring device proposed in this application has a trigger switch located inside the monitoring ring, which minimizes the risk of false alarms caused by accidental triggering of the trigger switch due to the complex construction environment and numerous surrounding debris.

[0028] 4. The pit edge foundation settlement monitoring device proposed in this application has scale lines set on the measuring mark and a baseline set on the monitoring ring, which can read settlement data before reaching the critical point at any time. When reading data manually, the use of a level instrument is eliminated, saving time and effort. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the pit edge foundation settlement monitoring device of this application; Figure 2 for Figure 1 Enlarged view at point A; Figure 3 for Figure 2 A cross-sectional view; Figure 4 for Figure 1 Enlarged view at point B; Figure 5 for Figure 4 A cross-sectional view; Explanation of reference numerals in the attached drawings: 1. Pile body; 11. Ground alignment line; 12. Second ear plate; 2. Monitoring component; 21. Connecting rod; 22. Monitoring ring; 221. Warning light; 2211. Protective cover; 222. Trigger switch; 223. Intermediate rod; 224. Baseline; 3. Measuring mark; 31. Clearance groove; 32. Scale line; 4. Auxiliary pile body; 5. Support rod; 6. Straightening component; 61. Spirit level; 62. Telescopic rod; 621. Adjusting screw; 6211. First ear plate; 622. Sleeve; 6221. Third ear plate; 623. Adjusting nut; 624. Counterweight; 6241. Fourth ear plate. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0031] This application discloses a pit edge foundation settlement monitoring device. This settlement monitoring device differs from existing monitoring devices in that it provides more intelligent monitoring of pit edge foundation settlement. (Reference) Figure 1 The pit-side foundation settlement monitoring device includes a pile 1, a monitoring component 2, and a measuring marker 3.

[0032] Referring to 4, the pile body 1 is set as a solid round rod and can be made of stainless steel. The pile body 1 is fixedly buried at the position of the elevation benchmark around the foundation pit. The lower end of the pile body 1 can be set as a pointed shape to facilitate the burial of the pile body 1 on the ground. The ground height of the pile body 1 can be set to 50cm.

[0033] A ground alignment line 11 is set at one-third of the height of the pile body 1 at the bottom of the pile body 1. The ground alignment line 11 is a scribed line that surrounds the pile body 1. The width of the alignment line 11 can be set to 5mm. The ground alignment line 11 can ensure the burial height of the pile body 1 and ensure the stability of the pit edge foundation settlement monitoring device.

[0034] refer to Figures 1-3The monitoring component 2 includes multiple connecting rods 21, multiple monitoring rings 22, an alarm light 221 located on the monitoring ring 22, and a trigger switch 222 located on the monitoring ring 22. The connecting rods 21 are slender stainless steel tubes with a diameter of 20-30mm. The monitoring rings 22 are stainless steel rings with a hollow interior. The inner diameter of the monitoring rings 22 can be set to 20mm, and its outer diameter can be set to 5-6 times the inner diameter. The thickness of the monitoring rings 22 can be 1.2-1.5 times the diameter of the connecting rods 21. The monitoring rings 22 and the connecting rods 21 can be welded together. The first monitoring ring 22 can be set 10m from the edge of the foundation pit, positioned on the vertical line between the pile and the edge of the foundation pit, and alternately connected with the connecting rods 21. The distance between two monitoring rings 22 is set to 15-20m, extending along the direction of the pile 1. The last connecting rod 21 is welded to the pile 1 at one end near the pile. The height of the monitoring component can be located at 1 / 2 of the above-ground part of the pile 1, and the monitoring component 2 is in a suspended state.

[0035] refer to Figure 3 The warning light 221 can be set as a light strip that only emits light, or it can be set as a warning light 221 with an alarm bell. In this application, it is set as a ring-shaped light strip warning light 221 placed above the monitoring ring 22. The inner diameter of the warning light 221 is larger than the inner diameter of the monitoring ring 22 and can be set to 50mm. The width of the warning light 221 can be set to 25mm.

[0036] A transparent protective cover 2211 is provided above the warning light 221. The protective cover 2211 is arranged in a Z-shape above the warning light 221. The protective cover 2211 is connected to the monitoring ring 22 on both sides of the warning light 221. The protective cover 2211 is fixed to the monitoring ring 22 with screws.

[0037] The trigger switch 222 is set on the monitoring ring 22, and can be set inside or above the monitoring ring 22. In order to reduce the influence of the surrounding environment on the trigger switch 222, this application sets the trigger switch 222 inside the monitoring ring 22. Specifically, a middle rod 223 is set in the middle of the monitoring ring 22. The middle rod 223 is made of steel and is fixedly installed in the center of the monitoring ring 22. A mounting hole is opened on the middle rod 223 for the trigger switch 222 to be installed. The trigger switch 222 is electrically connected to the warning light 221. When the trigger switch 222 is triggered, the warning light 221 starts to warn.

[0038] refer to Figures 2-3 The measuring mark 3 is a stainless steel rod with the same diameter as the inner diameter of the monitoring ring 22. The lower end of the measuring mark 3 is pointed and is buried in the ground through the monitoring ring 22.

[0039] The measuring marker 3 has a clearance groove 31 in the middle, which fits with the intermediate rod 223 on the monitoring ring 22 and passes through the monitoring ring 22. Specifically, the measuring marker 3 has a clearance groove 31. The pit edge foundation settlement monitoring device can be pre-assembled in the processing plant. When assembling the measuring marker 3 and the monitoring component 2, first insert the measuring marker 3 with the clearance groove 31 into the monitoring ring 22, and then insert the intermediate rod 223 into the clearance groove 31 and fix the intermediate rod 223 in the center of the monitoring ring 22. When in use, the measuring marker 3 will descend with the settlement of the foundation, while the position of the monitoring ring 22 remains unchanged. When the settlement preset value is reached, the top of the clearance groove 31 will trigger the trigger switch 222 located on the intermediate rod 223. When the trigger switch 222 is triggered, the warning light 221 will be activated.

[0040] The measuring mark 3 has a relief groove 31 with scale lines 32 on both sides along the axial direction. The range of scale lines 32 can be equal to the length of relief groove 31. The top of the monitoring ring 22 has a reference line 224. Specifically, the reference line 224 is located on one side of the inner diameter of the monitoring ring 22 that slides with the measuring mark 3. The reference line 224 is painted red.

[0041] refer to Figures 4-5 The pit-side foundation settlement monitoring device also includes an auxiliary pile 4 and a support rod 5. The auxiliary pile 4 is installed next to the pile 1 and can be configured as a rod with the same structure as the pile 1. The distance between the auxiliary pile 4 and the pile 1 can be set to 10-15m. The line connecting the auxiliary pile 4 and the pile 1 is perpendicular to the axis of the connecting rod 21 on the monitoring component 2.

[0042] The support rod 5 is a shuttle-shaped stainless steel rod, thick in the middle and thin at both ends. The diameter of the middle part of the support rod 5 is twice the diameter of the two ends. The first end of the support rod 5 is fixed to the bottom of the auxiliary pile 4, and the second end is fixed to the connecting rod 21 away from the pile 1, close to the monitoring ring 22. The first end of the support rod 5 is lower than the second end.

[0043] The foundation settlement monitoring device also includes a straightening component 6. The straightening component 6 is located on one side of the pile 1, opposite to the direction of the monitoring component 2. Specifically, the straightening component 6 includes a level bubble 61 and a telescopic rod 62 installed on the top of the pile 1. An installation groove for the level bubble 61 is provided on the top of the pile 1; the level bubble 61 can be a circular acrylic bubble.

[0044] The telescopic rod 62 includes an adjusting screw 621, a sleeve 622 and an adjusting nut 623, as well as a counterweight 624 placed on the ground.

[0045] The adjusting screw 621 has a threaded rod at one end and a first ear plate 6211 at the second end. A second ear plate 12 is provided on the top of the pile body 1 in the direction opposite to the monitoring component 2. The second ear plate 12 is hinged to the first ear plate 6211.

[0046] The sleeve 622 is a tubular rod with a third lug 6221 at one end.

[0047] The counterweight 624 is set on the ground on one side of the pile 1, opposite to the monitoring component 2. The distance between the counterweight and the pile 1 can be set to 1-1.2 times the height of the pile 1 from the ground to the top.

[0048] The top of the counterweight 624 is provided with a fourth ear plate 6241, which is hinged to the third ear plate 6221 on the sleeve 622.

[0049] An adjusting nut 623 is located at the second end of the sleeve 622 and is rotatably connected to the sleeve 622. The outer side of the adjusting nut 623 is hexagonal, and the inner side is provided with a threaded tube that matches the threaded rod, and the outer diameter of the threaded tube is smaller than the inner diameter of the sleeve 622. By rotating the adjusting nut 623, the straightness of the pile 1 can be adjusted to prevent the pile 1 from tilting.

[0050] A straightening component 6 is also provided on one side of the auxiliary pile 4, and the direction of the straightening component 6 is consistent with that of the adjustment component at the location of the pile 1.

[0051] The implementation principle of this application embodiment is as follows: the pile body 1 is inserted at the position of the elevation benchmark point and will not change due to ground settlement. The monitoring component 2 is rigidly connected to the pile body 1 and is in a suspended state, and will not change due to ground settlement. The measuring mark 3 is buried at the settlement measurement point and passes through the monitoring ring 22. When the settlement reaches the preset value, the measuring mark 3 will touch the trigger switch 222 on the monitoring ring 22, triggering the warning light 221 to warn and promptly notify the staff to take appropriate action. Before the preset value is reached, because the measuring mark 3 has a scale and the monitoring ring 22 has a baseline 224, the staff can read the settlement data at any time.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for monitoring settlement of foundation at the edge of a pit, characterized in that: include: A pile body (1), which is used to fix the pile body (1) to an elevation benchmark; a monitoring component (2), which includes multiple connecting rods (21), multiple monitoring rings (22) that are rigidly connected to the connecting rods (21) alternately, a trigger switch (222) fixed on the monitoring rings (22), and a warning light (221) electrically connected to the trigger switch (222), wherein the connecting rods (21) and the monitoring rings (22) extend in a direction perpendicular to the pile body (1), and one end of the connecting rod (21) is rigidly fixed on the pile body (1); a measuring mark (3), which is movably inserted into the monitoring rings (22) and used to be buried in the ground, wherein the measuring mark (3) triggers the trigger switch (222) after the ground settlement reaches a set value, causing the warning light (221) to warn. The trigger switch (222) is fixed to the monitoring ring (22) by a middle rod (223). The middle rod (223) is located in the middle of the monitoring ring (22), and both ends of the middle rod (223) are fixed to the monitoring ring (22). The measuring mark (3) has a clearance groove (31) in the middle to allow the intermediate rod (223) to pass through. The clearance groove (31) extends along the axial direction of the measuring mark (3). The measuring mark (3) is provided with a scale line (32), and the monitoring ring (22) is provided with a baseline (224). The pile (1) is inserted at the elevation benchmark point and will not change due to ground settlement. The monitoring component (2) is rigidly connected to the pile (1) and is in a suspended state and will not change due to ground settlement. The measuring mark (3) is buried at the settlement measurement point and passes through the monitoring ring (22). When the settlement equivalent reaches the preset value, the measuring mark (3) will touch the trigger switch (222) on the monitoring ring (22), causing the warning light (221) to warn and promptly notify the staff to take appropriate action. Before the preset value is reached, the staff can read the settlement data at any time because the measuring mark (3) has a scale and the monitoring ring (222) has the benchmark line (224).

2. The pit-edge foundation settlement monitoring device according to claim 1, characterized in that: It also includes an auxiliary pile (4) located around the pile (1) and fixed in a non-settlement position, and a support rod (5) with its first end fixed to the auxiliary pile (4), the second end of which is connected to the connecting rod (21) away from the pile (1).

3. The pit-edge foundation settlement monitoring device according to claim 2, characterized in that: The support rod (5) is thick in the middle and thin at both ends.

4. The pit-edge foundation settlement monitoring device according to claim 2, characterized in that: The first end of the support rod (5) is lower than the second end, and the support rod (5) and the monitoring component (2) form two sides of a triangle, and the imaginary line connecting the pile body (1) and the auxiliary pile body (4) is the other side of the triangle.

5. The pit-edge foundation settlement monitoring device according to any one of claims 1-4, characterized in that: It also includes a straightening assembly (6) for straightening the pile body (1), the straightening assembly (6) including a spirit level (61) mounted on the top of the pile body (1) and a telescopic rod (62) with its first end hinged to the pile body (1) and located on the opposite side of the connecting rod (21), the second end of the telescopic rod (62) being mounted on the ground.

6. The pit-edge foundation settlement monitoring device according to claim 5, characterized in that: The straightening assembly (6) also includes a counterweight (624) hinged to the second end of the telescopic rod (62), the counterweight (624) being placed on the ground.

7. The pit-edge foundation settlement monitoring device according to claim 1, characterized in that: The pile body (1) is provided with a ground alignment line (11).

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