Pile foundation deformation monitoring device

Abstract

The invention provides a pile foundation deformation monitoring device, and belongs to the technical field of monitoring equipment.The pile foundation deformation monitoring device comprises a measuring pipe, a laser bending measuring assembly, a water level detecting assembly and a drainage assembly, the measuring pipe is used for being vertically buried in a pile, and a permeable structure is arranged on the pipe wall; the laser bending measuring assembly is arranged on the measuring pipe to detect the bending degree of the measuring pipe; the water level detection assembly is arranged on the measuring pipe to detect the water level in the measuring pipe; the drainage assembly is connected with the lower portion of the measuring pipe and used for draining water in the measuring pipe. During monitoring, water permeating into the measuring pipe is drained away through the drainage assembly, the bending degree of the measuring pipe is detected through the laser bending measuring assembly, and the bending degree is compared with previous data, so that the deformation amount of the pile foundation is judged; meanwhile, the rising speed of the water level in the measuring pipe is judged through the water level detection assembly, and therefore the crack condition of the pile foundation is judged; therefore, the deformation of the pile foundation can be monitored, and the safety of the pile foundation can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of monitoring equipment, and more specifically, relates to a pile foundation deformation monitoring device. Background Art

[0002] Pile foundation is a common foundation form in the construction of houses, roads and bridges, water conservancy projects, ports, etc. Concrete piles are a common form of pile foundation. Due to geological changes, pile foundations are prone to bending and deformation, and concrete piles are prone to cracks after deformation, causing the steel structure to corrode. Long-term accumulation will significantly reduce the bearing capacity of the pile foundation.

[0003] Therefore, it is necessary to design a pile foundation deformation monitoring device to monitor the deformation of the pile foundation. Summary of the invention

[0004] The purpose of the present invention is to provide a pile foundation deformation monitoring device to solve the above technical problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a pile foundation deformation monitoring device, including a measuring tube, a laser bending measurement component, a water level detection component and a drainage component, the measuring tube is used to be vertically buried in the pile, and a water-permeable structure is provided on the tube wall; the laser bending measurement component is arranged on the measuring tube to detect the bending degree of the measuring tube; the water level detection component is arranged on the measuring tube to detect the water level in the measuring tube; the drainage component is connected to the lower part of the measuring tube to discharge the water in the measuring tube.

[0006] In combination with the above technical solution, in a possible implementation, a top cover is provided on the top of the measuring tube, and the laser bending measurement component and the water level detection component are both connected to the top cover.

[0007] In combination with the above technical scheme, in a possible implementation method, the laser bending measurement assembly includes a hammer line position adjustment assembly, a plumb line, a weight seat, a laser angle adjustment assembly and a laser ranging assembly, the hammer line position adjustment assembly is arranged on the top cover; one end of the plumb line is connected to the hammer line position adjustment assembly; the weight seat is connected to the other end of the plumb line; the laser angle adjustment assembly is arranged on the weight seat; and the laser ranging assembly is connected to the laser angle adjustment assembly.

[0008] In combination with the above technical solution, in a possible implementation, the drainage assembly includes a drainage pipe, which is located outside the measuring pipe and has one end connected to the lower part of the measuring pipe.

[0009] In combination with the above technical solution, in a possible implementation, the water level detection component is a photoelectric water level detection module, a resistive water level detection module or an ultrasonic water level detection module.

[0010] In combination with the above technical solution, in a possible implementation, the water-permeable structure includes a water-permeable hole provided on the side wall of the measuring tube, and a filter assembly is also provided at the location of the water-permeable hole on the outside of the measuring tube.

[0011] In combination with the above technical solution, in a possible implementation, the measuring tube adopts a bellows, and the water-permeable holes and the filter assembly are located at the trough position outside the bellows.

[0012] In combination with the above technical solution, in a possible implementation method, the filter assembly includes a mesh sleeve, filter material, a closing plate and an outer restraining ring. The mesh sleeve is arranged in the trough outside the measuring tube; the filter material is filled in the mesh sleeve and contains water-swellable material; the closing plate is arranged on the side of the mesh sleeve facing away from the bottom of the trough, and the edges on both sides abut against the outer wall of the measuring tube to limit the mesh sleeve in the trough; the outer restraining ring is arranged on the closing plate to restrain the closing plate so that the edges on both sides of the closing plate contact the outer wall of the measuring tube.

[0013] In combination with the above technical solution, in a possible implementation method, the cross-section of the closing piece is arc-shaped, and the thickness gradually increases from the edges on both sides to the middle; a limiting groove for limiting the outer clamp ring is provided in the middle of the closing piece; a thorn cone is provided on the side of the closing piece facing the mesh sleeve, and a zinc droplet is provided at the end of the thorn cone; the outer clamp ring is a corrugated elastic structure; a tightening structure is provided on the outer clamp ring to tighten the closing piece; V-shaped notches are provided at intervals on the edges on both sides of the closing piece.

[0014] In combination with the above technical solution, in a possible implementation, the pile foundation deformation monitoring device also includes a data processor, and the data processor is respectively communicated with the laser bending measurement component and the water level detection component to receive data.

[0015] The beneficial effect of the pile foundation deformation monitoring device provided by the present invention is that, compared with the prior art, during monitoring, the present invention drains away the water that has seeped into the measuring tube through the drainage component, detects the bending degree of the measuring tube through the laser bending measuring component, and compares it with previous data, thereby determining the deformation amount of the pile foundation; at the same time, the rate at which the water level in the measuring tube rises is determined through the water level detection component, thereby determining the crack condition of the pile foundation; in this way, the deformation of the pile foundation can be monitored, which is beneficial to ensuring the safety of the pile foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1A schematic diagram of the installation position of the pile foundation deformation monitoring device provided by an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the upper structure of a pile foundation deformation monitoring device provided by an embodiment of the present invention;

[0019] Figure 3 A schematic structural diagram of the filter component portion of the pile foundation deformation monitoring device provided in an embodiment of the present invention.

[0020] Among them, the reference numerals in the figures are as follows:

[0021] 10. measuring tube; 11. top cover; 12. water permeable hole; 13. mesh; 14. filter material; 15. sealing piece; 151. limiting groove; 152. thorn cone; 153. zinc droplet; 16. outer restraining ring;

[0022] 20. Laser bending measurement assembly; 21. Hammer line position adjustment assembly; 22. Vertical line; 23. Heavy hammer seat; 24. Laser angle adjustment assembly; 25. Laser distance measurement assembly;

[0023] 30. Water level detection component; 40. Drainage component; 50. Pile foundation. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0025] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0026] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0027] The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. The directions or positional relationships indicated by the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0029] The pile foundation deformation monitoring device provided by the present invention is now described.

[0030] like Figure 1 As shown, the pile foundation deformation monitoring device provided by the first embodiment of the present invention includes a measuring tube 10, a laser bending measurement component 20, a water level detection component 30 and a drainage component 40. The measuring tube 10 is used to be vertically buried in the pile, and a water-permeable structure is provided on the tube wall; the laser bending measurement component 20 is arranged on the measuring tube 10 to detect the bending degree of the measuring tube 10; the water level detection component 30 is arranged on the measuring tube 10 to detect the water level in the measuring tube 10; the drainage component 40 is connected to the lower part of the measuring tube 10 to discharge the water in the measuring tube 10.

[0031] During construction, after the top and bottom of the measuring tube 10 are sealed, the entire device is buried in the pile foundation so that the measuring tube 10 can be wrapped by the concrete structure of the pile foundation. The laser bending measurement component 20, the water level detection component 30 and the drainage component 40 can be installed in the measuring tube 10 during or after the pile foundation construction.

[0032] Compared with the prior art, the pile foundation deformation monitoring device provided in this embodiment, when monitoring, drains away the water that has seeped into the measuring tube 10 through the drainage component 40, and detects the bending degree of the measuring tube 10 through the laser bending measuring component 20, and compares it with the previous data, so as to determine the deformation of the pile foundation; at the same time, the water level detection component 30 determines the rate of water level recovery in the measuring tube 10, so as to determine the crack condition of the pile foundation; in this way, the deformation of the pile foundation can be monitored, which is beneficial to ensure the safety of the pile foundation.

[0033] like Figures 1 to 3 As shown, a specific implementation mode provided by the present invention based on the first implementation mode is as follows:

[0034] A top cover 11 is provided on the top of the measuring tube 10 , the laser bending measuring assembly 20 and the water level detecting assembly 30 are both connected to the top cover 11 , and data wires of the laser bending measuring assembly 20 and the water level detecting assembly 30 extend from the top cover 11 to the outside.

[0035] like Figure 2 As shown, in some specific embodiments, the laser bending measurement assembly 20 includes a hammer line position adjustment assembly 21, a plumb line 22, a weight seat 23, a laser angle adjustment assembly 24 and a laser ranging assembly 25, wherein the hammer line position adjustment assembly 21 is disposed on the top cover 11; one end of the plumb line 22 is connected to the hammer line position adjustment assembly 21; the weight seat 23 is connected to the other end of the plumb line 22; the laser angle adjustment assembly 24 is disposed on the weight seat 23; and the laser ranging assembly 25 is connected to the laser angle adjustment assembly 24.

[0036] When the top cover 11 is installed after the pile foundation construction, the position of the vertical line 22 in the measuring tube 10 is adjusted by the hammer line position adjustment component 21, and the vertical line 22 is used to ensure that the laser ranging component 25 droops naturally. The angle of the laser ranging component 25 can also be fine-tuned by the laser angle adjustment component 24, so that the laser emitted by the laser ranging component 25 can overlap with the measuring tube 10 as much as possible to ensure the monitoring effect.

[0037] like Figure 1 As shown, in some specific embodiments, the drainage assembly 40 includes a drainage pipe, which is located outside the measuring tube 10, and one end of the drainage pipe is connected to the lower part of the measuring tube 10, and the other end extends outside the pile. This can facilitate drainage and avoid blocking the laser.

[0038] In some specific embodiments, the water level detection component 30 is a module in the form of a photoelectric water level detection module, a resistive water level detection module, or an ultrasonic water level detection module.

[0039] To facilitate automated management and control, the pile foundation deformation monitoring device also includes a data processor, which is respectively connected to the laser bending measurement component 20 and the water level detection component 30 for communication to receive data.

[0040] like Figure 3 As shown, in some specific embodiments, the water-permeable structure includes a water-permeable hole 12 provided on the side wall of the measuring tube 10, and a filter assembly is also provided at the location of the water-permeable hole 12 on the outside of the measuring tube 10. By providing the filter assembly, it can be ensured that the water-permeable hole 12 is not blocked by materials such as concrete during construction, and when cracks occur in the pile body during use, water can pass through the filter assembly and enter the water-permeable hole 12, thereby being detected.

[0041] The measuring tube 10 adopts a bellows to enhance the combination with the pile body material so that it can deform with the pile body and be more easily detected. During pile construction, in order to avoid bending, steel rods can be lined inside the bellows for support, and the steel rods can be pulled out after construction. Due to the corrugated structure of the bellows, the steel rods can be easily pulled out even if they are pressed tightly inside the bellows, and will not be difficult to pull out like a straight pipe. The water permeable holes 12 and the filter assembly are located at the trough position outside the bellows.

[0042] like Figure 3 As shown, in some specific embodiments, the filter assembly includes a mesh sleeve 13, a filter material 14, a closing piece 15 and an outer restraining ring 16. The mesh sleeve 13 is arranged in the trough outside the measuring tube 10; the filter material 14 is filled in the mesh sleeve 13 and contains water-swellable material; the closing piece 15 is arranged on the side of the mesh sleeve 13 facing away from the bottom of the trough, and the edges on both sides abut against the outer wall of the measuring tube 10 to limit the mesh sleeve 13 in the trough; the outer restraining ring 16 is arranged on the closing piece 15 to restrain the closing piece 15 so that the edges on both sides of the closing piece 15 contact the outer wall of the measuring tube 10.

[0043] In this way, the filter material 14 can be relatively well sealed and pressed in the trough to maintain the filterability of the filter material 14. During the pile foundation construction, the sealing piece 15 and the outer wall of the measuring tube 10 are sealed to prevent the concrete slurry from penetrating and blocking the gaps of the filter material 14; while in use, the water in the measuring tube 10 causes the filter material 14 to expand, and the cracks caused by the deformation of the pile foundation make it possible to have a relatively small gap between the sealing piece 15 and the outer wall of the measuring tube 10, so that water can penetrate through, but the filter material 14 will not pass through.

[0044] In actual use, a set of mesh sleeves 13, filter materials 14, sealing sheets 15 and outer restraining rings 16 can be arranged in any or every trough of the measuring tube 10 and inside and outside the measuring tube 10 as needed.

[0045] Specifically, the cross section of the closing piece 15 is arc-shaped, and the thickness gradually increases from the edges on both sides to the middle, so that the edges of the closing piece 15 are more easily deformed, so that a better seal is formed between the closing piece 15 and the outer wall of the measuring tube 10; at the same time, it is also convenient that during long-term use, the edge of the closing piece 15 and the measuring tube 10 are consumed first, and under the tightening action of the outer clamping ring 16, the unconsumed edge of the closing piece 15 is pressed against the measuring tube 10, avoiding the rapid loss of strength caused by the consumption of the middle part of the closing piece 15. In order to prevent the edges on both sides of the closing piece 15 from scratching the measuring tube 10, a curling structure can be set on the edges on both sides of the closing piece 15.

[0046] A limiting groove 151 is provided in the middle of the closing piece 15 for limiting the outer clamping ring 16 to prevent the outer clamping ring 16 from slipping.

[0047] The outer restraining ring 16 is a corrugated elastic structure so as to provide a relatively long-lasting elastic force to the closing piece 15 .

[0048] The outer clamping ring 16 is provided with a tightening structure to tighten the outer clamping ring 16 to tighten the closing piece 15. In some specific embodiments, the tightening structure includes a connecting ear provided on the outer clamping ring 16 and a bolt passing through the connecting ear.

[0049] The sealing piece 15 is provided with a spike cone 152 on the side facing the mesh sleeve 13, and a zinc droplet 153 is provided at the end of the spike cone 152. The zinc droplet 153 is spherical at the end of the spike cone 152, and can wrap the tip of the spike cone 152. The zinc droplet 153 will be gradually consumed during the long-term electrochemical corrosion process, thereby preventing corrosion of other parts; and during the installation process, the spike cone 152 and the zinc droplet 153 can lift a part of the mesh sleeve 13, so that the liquid gathers to form a stable electrochemical protection environment, and after the zinc droplet 153 is corroded, this space will be occupied by the filter material 14, so that the outer clamp ring 16 and the external pressure can press the sealing piece 15 tightly, so as to prevent the gap between the sealing piece 15 and the outer wall of the measuring tube 10 from becoming larger due to corrosion during the long-term use of the edge of the sealing piece 15, and it will always remain in a relatively small state.

[0050] Preferably, V-shaped notches are provided at intervals on both side edges of the closing piece 15 to facilitate bending the closing piece 15 into an arc-shaped structure and avoid bending and stacking of both side edges due to stress concentration.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pile foundation deformation monitoring device, characterized in that: include: A measuring pipe (10) is used to be buried vertically in the pile, and a water-permeable structure is provided on the pipe wall; A laser bending measurement assembly (20) is arranged on the measuring tube (10) to detect the bending degree of the measuring tube (10); A water level detection component (30) is arranged on the measuring tube (10) to detect the water level in the measuring tube (10); A drainage assembly (40) is connected to the lower portion of the measuring tube (10) and is used to drain water in the measuring tube (10).

2. The pile foundation deformation monitoring device according to claim 1, characterized in that: A top cover (11) is provided on the top of the measuring tube (10), and the laser bending measurement assembly (20) and the water level detection assembly (30) are both connected to the top cover (11).

3. The pile foundation deformation monitoring device according to claim 2, characterized in that: The laser bending measurement assembly (20) comprises: A hammer line position adjustment component (21) is arranged on the top cover (11); A vertical line (22), one end of which is connected to the hammer line position adjustment component (21); A weight seat (23) connected to the other end of the vertical line (22); A laser angle adjustment component (24) is arranged on the weight seat (23); A laser distance measuring component (25) is connected to the laser angle adjusting component (24).

4. The pile foundation deformation monitoring device according to claim 1, characterized in that: The drainage assembly (40) comprises a drainage pipe, which is located outside the measuring pipe (10) and has one end connected to the lower part of the measuring pipe (10).

5. The pile foundation deformation monitoring device according to claim 1, characterized in that: The water level detection component (30) is a photoelectric water level detection module, a resistance water level detection module or an ultrasonic water level detection module.

6. The pile foundation deformation monitoring device according to claim 1, characterized in that: The water-permeable structure comprises a water-permeable hole (12) arranged on the side wall of the measuring tube (10), and a filter assembly is also arranged at a location outside the measuring tube (10) where the water-permeable hole (12) is arranged.

7. The pile foundation deformation monitoring device according to claim 6, characterized in that: The measuring tube (10) is a corrugated tube, and the water permeable hole (12) and the filter assembly are located at the trough position outside the corrugated tube.

8. The pile foundation deformation monitoring device according to claim 7, characterized in that: The filter assembly comprises: A mesh sleeve (13) is arranged in the trough outside the measuring tube (10); A filter material (14) filled in the mesh sleeve (13) and containing a water-swellable material; A sealing sheet (15) is arranged on a side of the mesh sleeve (13) facing away from the bottom of the wave valley, and the edges on both sides thereof abut against the outer wall of the measuring tube (10) so as to limit the mesh sleeve (13) in the wave valley; An outer restraining ring (16) is arranged on the closing piece (15) to restrain the closing piece (15) so that the edges on both sides of the closing piece (15) are in contact with the outer wall of the measuring tube (10).

9. The pile foundation deformation monitoring device according to claim 8, characterized in that: The cross section of the closing piece (15) is arc-shaped, and the thickness gradually increases from the two side edges to the middle part; a limiting groove (151) for limiting the outer clamping ring (16) is provided in the middle part of the closing piece (15); a thorn cone (152) is provided on the side of the closing piece (15) facing the mesh sleeve (13), and a zinc droplet (153) is provided at the end of the thorn cone (152); the outer clamping ring (16) is a corrugated elastic structure; a tightening structure is provided on the outer clamping ring (16) to tighten the outer clamping ring (16) and tighten the closing piece (15); V-shaped notches are provided at intervals on the two side edges of the closing piece (15).

10. The pile foundation deformation monitoring device according to claim 1, characterized in that: The pile foundation deformation monitoring device also includes a data processor, which is respectively connected to the laser bending measurement component (20) and the water level detection component (30) for communication so as to receive data.

Images