Pile foundation settlement amount detection device for geotechnical engineering

Abstract

The invention discloses a pile foundation settlement amount detection device for geotechnical engineering, and relates to the technical field of pile foundation settlement amount detection. The device comprises a CCD camera, the surface of the CCD camera is fixedly connected with a mounting plate, the side, away from the CCD camera, of the mounting plate is fixedly connected with the top of a groove plate, a detection plate is arranged in a bent mode and is made of an elastic material, and a driving assembly is fixedly connected with the side, away from the bent center, of the detection plate. The side, away from the detection plate, of the driving assembly is fixedly connected to the top of the groove plate, the CCD camera monitors compression of the pile body in real time, and therefore compression deformation data of the pile body is measured, when the driving assembly drives the detection plate to be close to the pile body and not make contact with the pile body, the pile body and the detection plate generate relative displacement, and the detection plate can be used as a reference object to detect the pile body. And a more accurate detection result is obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation settlement detection, and particularly relates to a pile foundation settlement detection device for geotechnical engineering. Background Art

[0002] Pile foundation settlement detection is a key measure to evaluate the bearing capacity of pile foundations under vertical loads. By means of static load tests, high-strain methods, etc., vertical forces are applied to the piles on site, and data such as pile top settlement and pile body strain are monitored to accurately determine the settlement characteristics of the piles, so as to ensure the pile foundation design and construction quality of projects such as buildings and bridges. It usually includes pile body compression deformation, pile tip soil settlement, pile side soil settlement, etc. In the pile body compression deformation experiment, a vertical load needs to be applied to the pile top, and the load is transmitted to the pile body through equipment such as jacks. At the same time, displacement sensors and other measuring instruments are arranged on the pile top and around the pile to monitor the settlement deformation of the pile. During the experiment, heavy objects are gradually stacked on the bearing plate at the pile top to simulate the vertical stress state of the pile in actual work and obtain detection data. In the existing pile body compression deformation experiments, in order to obtain more accurate experimental data, multiple control groups are usually set up and multiple experiments are carried out, resulting in low detection efficiency. Therefore, we propose a pile foundation settlement detection device for geotechnical engineering. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a pile foundation settlement detection device for geotechnical engineering, including: A groove plate, a column is fixedly connected to the top of the groove plate, and a top plate is fixedly connected to the side of the column away from the groove plate; A settlement mechanism, which is fixedly connected to the side of the top plate close to the groove plate; A detection mechanism, which is fixedly connected to the side of the groove plate close to the top plate; Among them, the detection mechanism includes: A CCD camera, an installation plate is fixedly connected to the surface of the CCD camera, and the side of the installation plate away from the CCD camera is fixedly connected to the top of the groove plate; A detection plate, the detection plate is bent, and the detection plate is made of an elastic material; A driving component, the driving component is fixedly connected to the side of the detection plate away from the bending center, and the side of the driving component away from the detection plate is fixedly connected to the top of the groove plate; Place the pile foundation into the groove of the groove plate, and the settlement mechanism fixes the bottom of the pile foundation. Subsequently, the settlement mechanism applies pressure to the top of the pile foundation to cause the pile foundation to settle. The CCD camera monitors the compression of the pile body in real time, thereby measuring the data of the compression deformation of the pile body. When the driving component drives the detection plate to approach the pile body without contacting the pile body, a relative displacement is generated between the pile body and the detection plate, and a more accurate detection result can be obtained with the detection plate as a reference.

[0004] Further, the CCD cameras are symmetrically arranged on the top of the groove plate. Two detection plates are symmetrically arranged at the interval between the two CCD cameras, and the middle parts of the two detection plates are bent towards the mutually remote sides. The two CCD cameras can obtain two groups of detection data at one time. By cooperating with the control experiment, multiple detection data can be obtained. When excluding the error data, fewer control experiments need to be set, improving the detection efficiency. The two detection plates can clamp the pile body before fixing the pile foundation, playing a pre-fixing effect.

[0005] Further, the detection plate is provided with a hollow interior. A strip body is fixedly connected to the inner side surface of the detection plate. One side of the strip body close to the center of the groove plate extends to the outside of the detection plate. The part of the strip body located inside the detection plate is hydrophilic, and the side of the strip body located outside the detection plate is hydrophobic. The strip body is arranged in a quasi-folded line shape, and ball bearings are arranged at the corners of the folded line shape of the strip body. The ball bearings are rotatably connected to the strip body, and the ball bearings extend into the hydrophilic part of the strip body. The detection plate stores pigments. When estimating the timing, place the pile foundation at the interval between the two detection plates. The driving component drives the two detection plates to approach each other. The ball bearings on the detection plate contact the pile body. The detection plate is squeezed, and the pigments inside it overflow, drawing several points on the pile body. Subsequently, after the pile body is straightened, place the pile foundation and fix the pile foundation. When the pile foundation generates compression deformation, the conspicuous points drawn by the pigments can be used as references on the pile foundation to obtain more accurate detection data. And no matter where the points are, the CCD camera can capture them through wide-angle photography. At the same time, after the fixation is completed, drive the detection plate to contact the pile body again. As the pile foundation deforms, the ball bearings roll on the pile body, and the pigments overflow along with the rolling of the ball bearings. Several ball bearings draw several thin lines through the pigments as a rough reference for the detection result. When the compression data detected by the CCD camera deviates too much from the length of the drawn line, the error data can be excluded, improving the accuracy of the detection result. And the exclusion of the error data can further reduce the sample quantity required for accurate detection, improving the detection efficiency. The several ball bearings distributed on the folded line of the strip body in a folded line shape can obtain multiple drawn lines. By taking the average value, data closer to the accurate result can be obtained, which can better exclude the error data of the CCD camera. And for the ball bearings distributed in a folded line shape, the distance between the ball bearings is farther, and the pigments will not adhere due to bleeding on the pile foundation, and clearer points and drawn lines can be obtained.

[0006] Furthermore, sealing gaskets are symmetrically arranged in the cavity of the detection plate, and the two sealing gaskets respectively seal both sides of the hollow part of the detection plate. The surface of the sealing gasket is fixedly connected to the inner side surface of the detection plate, and the sealing gasket is made of an elastic material. The elastic sealing gasket can deform when the detection plate is pressed, ensuring the contraction of the cavity of the detection plate and ensuring the extrusion of the pigment.

[0007] Furthermore, the driving assembly includes a first telescopic rod, which is symmetrically arranged with the CCD camera as the center. A mounting seat is fixedly connected to the surface of the first telescopic rod. One side of the mounting seat away from the first telescopic rod is fixedly connected to the top of the groove plate. One end of the two first telescopic rods away from the mounting seat is fixedly connected to a mounting block. One side of the mounting block away from the first telescopic rod is fixedly connected to the side of the detection plate away from the ball. The two mounting blocks are respectively arranged at both ends of the detection plate. When the first telescopic rod is started, the first telescopic rod expands and contracts, driving the mounting block to move, and finally driving the two detection plates to approach each other to complete pre-fixing and the extrusion of the pile body during detection. The mounting blocks are arranged at both ends of the detection plate. When leaning against the pile body, the detection plate can be bent to make it completely attached to the pile body, ensuring that several balls are in contact with the pile body, ensuring the number of marked lines, and avoiding the interruption of the marked lines of the balls under the action of the extrusion force.

[0008] Furthermore, the settlement mechanism includes a hydraulic cylinder, which is arranged at the interval between the groove plate and the top plate. A bracket is fixedly connected to the surface of the hydraulic cylinder. The bracket is fixedly connected to one side of the top plate close to the groove plate. One side of the hydraulic cylinder away from the top plate is fixedly connected to a hydraulic rod, and the hydraulic rod is fixedly connected to the output end of the hydraulic cylinder. One end of the hydraulic rod away from the hydraulic cylinder is fixedly connected to a pressing plate. A protective component is fixedly connected to the surface of the hydraulic rod, and the protective component is sleeved outside the pressing plate. A fixing component is fixedly connected to the inside of the groove plate. When the hydraulic cylinder is started, the hydraulic cylinder drives the hydraulic rod to extend, driving the pressing plate to move and applying pressure to the top of the pile foundation, so that the pile body generates compressive deformation. Subsequently, the applied pressure is changed to make the pile body generate different degrees of deformation.

[0009] Furthermore, the protection component includes a protective cover. The inner side surface of the protective cover is fixedly connected to the surface of the hydraulic rod. The inner side surface of the protective cover is fixedly connected with a wire mesh cover, and the pressing plate is arranged inside the wire mesh cover. The wire mesh cover is arranged in a waveform and is made of an elastic material. A groove is formed on one side of the protective cover close to the groove plate, and a plurality of such grooves are evenly distributed along the circumferential direction of the protective cover. When the pressure applied by the pressing plate to the pile foundation is too large, the top of the pile foundation cracks and the crushed stones fly. The protective cover can protect against the flying crushed stones and prevent them from hurting people. Moreover, the elastic wire mesh cover can deform when impacted by the crushed stones, reducing the kinetic energy of the crushed stones and further preventing injury. The waveform-shaped wire mesh cover can obtain a larger deformation distance and a better buffering effect. The gap between the wire mesh cover and the protective cover further increases the deformation distance of the wire mesh cover. The formation of the groove can discharge the crushed stones that enter between the wire mesh cover and the protective cover, preventing the crushed stones from accumulating and jamming the wire mesh cover.

[0010] Furthermore, the outer side surface of the protective cover is fixedly connected with a sliding plate. The inner side surface of the sliding plate is slidably connected to the surface of the column. A sliding rod is arranged at the interval between the groove plate and the sliding plate. There are two groups of sliding rods symmetrically arranged, and each group of sliding rods has two symmetrically arranged ones. One end of the sliding rod far from the groove plate penetrates through the sliding plate, and the inner side surface of the sliding plate is slidably connected to the surface of the sliding rod. One end of the two sliding rods in the same group far from the groove plate is fixedly connected with an end plate, and the end plate is arranged on the side of the sliding plate far from the groove plate. A spring is sleeved on the outer part of the sliding rod, and both ends of the spring are fixedly connected to the mutually close sides of the groove plate and the sliding plate respectively. The hydraulic rod moves, driving the protective cover to move accordingly, and driving the sliding plate to slide on the surface of the column, thus playing a limiting role to prevent the pressing plate from shifting when contacting the pile foundation. The sliding plate slides on the surface of the sliding rod, further playing a limiting effect. The sliding plate compresses the spring, and the deformation of the spring buffers the sliding plate, thereby buffering the pressing of the pressing plate.

[0011] Furthermore, the fixing component includes a second telescopic rod. Three second telescopic rods are circumferentially distributed inside the groove plate. The surface of the second telescopic rod is fixedly connected to the inner side surface of the groove plate. One end of the second telescopic rod away from the groove plate is provided with a fixing plate. A bent groove is formed on the surface of the fixing plate. One end of the second telescopic rod away from the groove plate extends into the bent groove, and the surface of the second telescopic rod is slidably connected to the inner side surface of the fixing plate. One end of the second telescopic rod located inside the bent groove is fixedly connected to a bent plate. Both ends of the bent plate are fixedly connected to both ends of the inner side surface of the bent groove. When the second telescopic rod is started, the second telescopic rod moves, driving the bent plate to move, driving the fixing plate to move. The middle part of the fixing plate first contacts the pile body, and a depression is generated in the middle part of the fixing plate, so as to wrap the pile body and achieve a better fixing effect. The formation of the bent groove makes the middle part of the fixing plate more likely to deform and achieve a better wrapping effect. The bent groove deforms and squeezes the bent plate, the middle part of the bent plate deforms, driving its two ends to approach each other, and further driving the two ends of the fixing plate to approach each other, further realizing a better wrapping effect and obtaining a more stable fixing.

[0012] Furthermore, a friction strip is fixedly connected to one side of the fixing plate away from the second telescopic rod. The friction strips are evenly distributed on one side of the fixing plate away from the second telescopic rod, and the friction strips are made of an elastic material into a waveform. The friction strip made of rubber material can increase the friction between the fixing plate and the pile body and achieve a better fixing effect. The waveform friction strip can increase the frictional resistance between the axial directions of the pile foundation, and further obtain a better fixing effect.

[0013] The beneficial effects of the present invention are as follows: 1. By setting a detection mechanism in the present invention, when the driving component drives the detection plate to approach the pile body without contacting the pile body, a relative displacement is generated between the pile body and the detection plate. Taking the detection plate as a reference object, a more accurate detection result can be obtained. The two CCD cameras can obtain two groups of detection data at one time. With a control experiment, multiple detection data can be obtained. When excluding incorrect data, the number of control experiments to be set is less, improving the detection efficiency. The two detection plates can clamp the pile body before fixing the pile foundation and achieve a pre-fixing effect.

[0014] 2. The present invention sets a detection board to draw several points on the pile body. Subsequently, after the pile body is straightened, the pile foundation is lowered and fixed. When the pile foundation undergoes compressive deformation, the conspicuous points drawn by the pigment can serve as reference objects on the pile foundation to obtain more accurate detection data. Moreover, no matter where the points are located, the CCD camera can capture them through wide-angle photography. After fixation, several balls draw several thin lines through the pigment as a rough reference for the detection result. When the compression data detected by the CCD camera deviates too much from the length of the drawn line, incorrect data can be excluded, improving the accuracy of the detection result. And the exclusion of incorrect data can further reduce the sample quantity required for accurate detection, improving the detection efficiency. The several balls distributed on the strip of the broken line can obtain multiple drawn lines. By taking the average value, data closer to the accurate result can be obtained, which can better exclude the incorrect data of the CCD camera. Moreover, for the balls distributed in a broken line, the distance between the balls is farther, and the pigment will not adhere due to bleeding on the pile foundation, and clearer points and drawn lines can be obtained.

[0015] 3. The present invention sets a driving component. The mounting blocks are arranged at both ends of the detection board. When it abuts against the pile body, it can bend the detection board to make it completely adhere to the pile body, ensuring that several balls are all in contact with the pile body, guaranteeing the number of drawn lines, and under the action of the extrusion force, preventing the drawn lines of the balls from being interrupted.

[0016] 4. The present invention sets a protection component. The protective cover can protect against flying gravel and prevent the gravel from hurting people. Moreover, the elastic mesh cover can deform when impacted by the gravel, reducing the kinetic energy of the gravel and further preventing injury. The mesh cover with a corrugated shape can obtain a larger deformation distance and a better buffering effect. And the gap between the mesh cover and the protective cover further increases the deformation distance of the mesh cover. The opening of the groove can discharge the gravel that enters between the mesh cover and the protective cover, preventing the gravel from accumulating and jamming the mesh cover.

[0017] 5. The present invention sets a fixing component. A depression is formed in the middle of the fixing plate to wrap the pile body, achieving a better fixing effect. The opening of the bent groove makes the middle part of the fixing plate more likely to deform, achieving a better wrapping effect. The deformation of the bent groove squeezes the bent plate, and the middle part of the bent plate deforms, driving its two ends to approach each other, and further driving the two ends of the fixing plate to approach each other, further realizing a better wrapping effect and obtaining more stable fixation. The friction strips made of rubber can increase the friction between the fixing plate and the pile body, achieving a better fixing effect. The corrugated friction strips can increase the frictional resistance between the axial directions of the pile foundation, further obtaining a better fixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the pile foundation settlement detection device for geotechnical engineering of the present invention; Figure 2Another perspective schematic diagram of the pile foundation settlement detection device for geotechnical engineering of the present invention; Figure 3 Schematic diagram of the structure of the detection mechanism of the present invention; Figure 4 Schematic diagram of the sectional structure of the detection plate of the present invention; Figure 5 Schematic diagram of the hydraulic cylinder structure of the present invention; Figure 6 Schematic diagram of the structure of the protection component of the present invention; Figure 7 Schematic diagram of the structure of the sliding plate of the present invention; Figure 8 Schematic diagram of the structure of the fixing component of the present invention.

[0019] In the figure: 1, groove plate; 2, column; 3, top plate; 4, settlement mechanism; 41, hydraulic cylinder; 42, bracket; 43, hydraulic rod; 44, pressing plate; 45, protection component; 451, protective cover; 452, wire mesh cover; 453, groove body; 454, sliding plate; 455, sliding rod; 456, end plate; 457, spring; 46, fixing component; 461, second telescopic rod; 462, fixed plate; 463, friction strip; 464, curved groove; 465, curved plate; 5, detection mechanism; 51, CCD camera; 52, mounting plate; 53, detection plate; 54, driving component; 541, first telescopic rod; 542, mounting seat; 543, mounting block; 55, strip body; 56, sealing gasket; 57, ball. Detailed implementation manners

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0021] Example 1, please refer to Figures 1-4 , the present invention is a pile foundation settlement detection device for geotechnical engineering, including: Groove plate 1, a column 2 is fixedly connected to the top of the groove plate 1, and a top plate 3 is fixedly connected to the side of the column 2 away from the groove plate 1; Settlement mechanism 4, the settlement mechanism 4 is fixedly connected to the side of the top plate 3 close to the groove plate 1; Detection mechanism 5, the detection mechanism 5 is fixedly connected to the side of the groove plate 1 close to the top plate 3; Among them, the detection mechanism 5 includes: A CCD camera 51, a mounting plate 52 is fixedly connected to the surface of the CCD camera 51, and one side of the mounting plate 52 away from the CCD camera 51 is fixedly connected to the top of the groove plate 1; A detection plate 53, the detection plate 53 is bent and is made of an elastic material; A driving assembly 54, the driving assembly 54 is fixedly connected to the side of the detection plate 53 away from the bending center, and one side of the driving assembly 54 away from the detection plate 53 is fixedly connected to the top of the groove plate 1; Put the pile foundation into the groove of the groove plate 1, the settlement mechanism 4 fixes the bottom of the pile foundation, and then the settlement mechanism 4 applies pressure to the top of the pile foundation to cause the pile foundation to settle. The CCD camera 51 monitors the compression of the pile body in real time, so as to measure the data of the compression deformation of the pile body. When the driving assembly 54 drives the detection plate 53 to approach the pile body without contacting the pile body, a relative displacement is generated between the pile body and the detection plate 53, and a more accurate detection result can be obtained with the detection plate 53 as a reference.

[0022] The CCD cameras 51 are symmetrically arranged on the top of the groove plate 1. Two detection plates 53 are symmetrically arranged at the interval between the two CCD cameras 51, and the middle parts of the two detection plates 53 are bent away from each other. The two CCD cameras 51 can obtain two sets of detection data at one time. With the control experiment, multiple detection data can be obtained. When excluding the error data, fewer control experiments need to be set, improving the detection efficiency. The two detection plates 53 can clamp the pile body before fixing the pile foundation, playing a pre-fixing effect.

[0023] The detection plate 53 is hollow inside. A strip body 55 is fixedly connected to the inner side surface of the detection plate 53. One side of the strip body 55 close to the center of the groove plate 1 extends outside the detection plate 53. The part of the strip body 55 inside the detection plate 53 is hydrophilic, and the side of the strip body 55 outside the detection plate 53 is hydrophobic. The strip body 55 is arranged in a quasi-folded line shape, and ball bearings 57 are arranged at the corners of the folded line shape of the strip body 55. The ball bearings 57 are rotatably connected to the strip body 55, and the ball bearings 57 extend into the hydrophilic part of the strip body 55. The detection plate 53 contains pigments. When it is estimated and timed, the pile foundation is placed at the interval between the two detection plates 53. The driving assembly 54 drives the two detection plates 53 to approach each other. The ball bearings 57 on the detection plates 53 contact the pile body. The detection plate 53 is squeezed, and the pigments inside it overflow, drawing several points on the pile body. Then, after the pile body is straightened, the pile foundation is lowered and fixed. When the pile foundation undergoes compressive deformation, the conspicuous points drawn by the pigments can be used as reference objects on the pile foundation to obtain more accurate detection data. And no matter where the points are, the CCD camera 51 can capture them through wide-angle photography. At the same time, after fixation, the detection plate 53 is driven to contact the pile body again. As the pile foundation deforms, the ball bearings 57 roll on the pile body, and the pigments overflow along with the rolling of the ball bearings 57. Several ball bearings 57 draw several thin lines through the pigments, serving as a rough reference for the detection result. When the compression data detected by the CCD camera 51 deviates too much from the length of the drawn line, the wrong data can be excluded, improving the accuracy of the detection result. And the exclusion of the wrong data can further reduce the number of samples required for accurate detection, improving the detection efficiency. The several ball bearings 57 distributed on the folded line of the strip body 55 in a folded line shape can obtain multiple drawn lines. By taking the average value, data closer to the accurate result can be obtained, which can better exclude the wrong data of the CCD camera 51. And for the ball bearings 57 distributed in a folded line shape, the distance between the ball bearings 57 is farther, and the pigments will not adhere due to bleeding on the pile foundation, and clearer points and drawn lines can be obtained.

[0024] Sealing gaskets 56 are symmetrically arranged in the cavity of the detection plate 53, and the two sealing gaskets 56 respectively seal both sides of the hollow part of the detection plate 53. The surface of the sealing gasket 56 is fixedly connected to the inner side surface of the detection plate 53, and the sealing gasket 56 is made of an elastic material. The elastic sealing gasket 56 can deform when the detection plate 53 is pressed, ensuring the contraction of the cavity of the detection plate 53 and ensuring the extrusion of the pigments.

[0025] The driving assembly 54 includes a first telescopic rod 541, which is symmetrically arranged around the CCD camera 51. A mounting seat 542 is fixedly connected to the surface of the first telescopic rod 541. One side of the mounting seat 542 away from the first telescopic rod 541 is fixedly connected to the top of the groove plate 1. Mounting blocks 543 are fixedly connected to one ends of the two first telescopic rods 541 away from the mounting seat 542. One side of the mounting block 543 away from the first telescopic rod 541 is fixedly connected to one side of the detection plate 53 away from the ball 57. And the two mounting blocks 543 are respectively arranged at both ends of the detection plate 53. Start the first telescopic rod 541, the first telescopic rod 541 expands and contracts, drives the mounting block 543 to move, and finally drives the two detection plates 53 to approach each other, completing pre-fixation and the extrusion of the pile body during detection. The mounting blocks 543 are arranged at both ends of the detection plate 53. When leaning against the pile body, the detection plate 53 can be bent to make it fully attached to the pile body, ensuring that a plurality of balls 57 are all in contact with the pile body, guaranteeing the number of scribed lines, and under the action of the extrusion force, preventing the scribed lines of the balls 57 from being interrupted.

[0026] Embodiment 2, please refer to Figures 1-8 , the settlement mechanism 4 includes a hydraulic cylinder 41. The hydraulic cylinder 41 is arranged at the interval between the groove plate 1 and the top plate 3. A bracket 42 is fixedly connected to the surface of the hydraulic cylinder 41. The bracket 42 is fixedly connected to one side of the top plate 3 close to the groove plate 1. A hydraulic rod 43 is fixedly connected to one side of the hydraulic cylinder 41 away from the top plate 3. The hydraulic rod 43 is fixedly connected to the output end of the hydraulic cylinder 41. A pressing plate 44 is fixedly connected to one end of the hydraulic rod 43 away from the hydraulic cylinder 41. A protective component 45 is fixedly connected to the surface of the hydraulic rod 43, and the protective component 45 is sleeved outside the pressing plate 44. A fixing component 46 is fixedly connected to the inside of the groove plate 1. Start the hydraulic cylinder 41, the hydraulic cylinder 41 drives the hydraulic rod 43 to extend, drives the pressing plate 44 to move, and applies pressure to the top of the pile foundation, thereby causing the pile body to produce compressive deformation. Subsequently, change the applied pressure to cause the pile body to produce different degrees of deformation.

[0027] The protection component 45 includes a protective cover 451. The inner side surface of the protective cover 451 is fixedly connected to the surface of the hydraulic rod 43. A wire mesh cover 452 is fixedly connected to the inner side surface of the protective cover 451. And the pressing plate 44 is arranged inside the wire mesh cover 452. The wire mesh cover 452 is arranged in a waveform and is made of an elastic material. A groove 453 is formed on one side of the protective cover 451 close to the groove plate 1, and a plurality of the grooves 453 are uniformly distributed along the circumferential direction of the protective cover 451. When the pressure applied by the pressing plate 44 to the pile foundation is too large, the top of the pile foundation cracks and the crushed stones fly. The protective cover 451 can protect against the flying crushed stones and prevent the crushed stones from hurting people. And the elastic wire mesh cover 452 can deform when impacted by the crushed stones, reducing the kinetic energy of the crushed stones and further preventing injury. The waveform-set wire mesh cover 452 can obtain a larger deformation distance and a better buffering effect. And the gap between the wire mesh cover 452 and the protective cover 451 further increases the deformation distance of the wire mesh cover 452. The formation of the groove 453 can discharge the crushed stones that enter between the wire mesh cover 452 and the protective cover 451, preventing the crushed stones from accumulating and jamming the wire mesh cover 452.

[0028] The outer side surface of the protective cover 451 is fixedly connected to a sliding plate 454. The inner side surface of the sliding plate 454 is slidably connected to the surface of the column 2. A sliding rod 455 is arranged at the interval between the groove plate 1 and the sliding plate 454. There are two groups of the sliding rods 455 arranged symmetrically, and each group of the sliding rods 455 has two arranged symmetrically. One end of the sliding rod 455 away from the groove plate 1 penetrates through the sliding plate 454, and the inner side surface of the sliding plate 454 is slidably connected to the surface of the sliding rod 455. One end of the two sliding rods 455 in the same group away from the groove plate 1 is fixedly connected to an end plate 456, and the end plate 456 is arranged on the side of the sliding plate 454 away from the groove plate 1. A spring 457 is sleeved on the outer part of the sliding rod 455, and the two ends of the spring 457 are respectively fixedly connected to the sides of the groove plate 1 and the sliding plate 454 close to each other. When the hydraulic rod 43 moves, it drives the protective cover 451 to move accordingly, driving the sliding plate 454 to slide on the surface of the column 2, thus playing a limiting role to prevent the pressing plate 44 from shifting when contacting the pile foundation. The sliding plate 454 slides on the surface of the sliding rod 455, further playing a limiting effect. The sliding plate 454 compresses the spring 457, and the deformation of the spring 457 buffers the sliding plate 454, thus buffering the pressing of the pressing plate 44.

[0029] The fixing component 46 includes a second telescopic rod 461. Three second telescopic rods 461 are circumferentially distributed inside the groove plate 1. The surface of the second telescopic rod 461 is fixedly connected to the inner side surface of the groove plate 1. One end of the second telescopic rod 461 away from the groove plate 1 is provided with a fixing plate 462. A bent groove 464 is formed on the surface of the fixing plate 462. One end of the second telescopic rod 461 away from the groove plate 1 extends into the bent groove 464, and the surface of the second telescopic rod 461 is slidably connected to the inner side surface of the fixing plate 462. One end of the second telescopic rod 461 located inside the bent groove 464 is fixedly connected to a bent plate 465. Both ends of the bent plate 465 are fixedly connected to both ends of the inner side surface of the bent groove 464. When the second telescopic rod 461 is started, the second telescopic rod 461 moves, driving the bent plate 465 to move, driving the fixing plate 462 to move. The middle part of the fixing plate 462 first contacts the pile body, and a depression is generated in the middle part of the fixing plate 462, so as to wrap the pile body and achieve a better fixing effect. The formation of the bent groove 464 makes the middle part of the fixing plate 462 more likely to deform and achieve a better wrapping effect. The bent groove 464 deforms and squeezes the bent plate 465, and the middle part of the bent plate 465 deforms, driving its two ends to approach each other, and further driving the two ends of the fixing plate 462 to approach each other, further realizing a better wrapping effect and obtaining a more stable fixing.

[0030] One side of the fixing plate 462 away from the second telescopic rod 461 is fixedly connected with a friction strip 463. The friction strips 463 are evenly distributed on one side of the fixing plate 462 away from the second telescopic rod 461, and the friction strips 463 are made of an elastic material into a waveform. The friction strip 463 made of rubber material can increase the friction between the fixing plate 462 and the pile body and achieve a better fixing effect. The waveform friction strip 463 can increase the frictional resistance between the axial directions of the pile foundation, and further obtain a better fixing effect.

[0031] During use, place the pile foundation into the groove of the groove plate 1, start the first telescopic rod 541, the first telescopic rod 541 expands and contracts, drives the mounting block 543 to move, and finally drives the two detection plates 53 to approach each other to complete pre-fixing. Start the second telescopic rod 461, the second telescopic rod 461 moves, drives the bent plate 465 to move, drives the fixing plate 462 to move, the middle part of the fixing plate 462 first contacts the pile body, a depression is generated in the middle part of the fixing plate 462, so as to wrap the pile body, the bent groove 464 deforms and squeezes the bent plate 465, the middle part of the bent plate 465 deforms, drives its two ends to approach each other, and further drives the two ends of the fixing plate 462 to approach each other. Start the hydraulic cylinder 41, the hydraulic cylinder 41 drives the hydraulic rod 43 to extend, drives the pressing plate 44 to move, and applies pressure to the top of the pile foundation, so that the pile body generates compressive deformation. Subsequently, change the applied pressure to make the pile body generate different degrees of deformation. Start the first telescopic rod 541 again, the first telescopic rod 541 expands and contracts, drives the mounting block 543 to move, and finally drives the two detection plates 53 to approach each other to squeeze the pile body. The CCD camera 51 monitors the compression of the pile body in real time, so as to measure the data of the compressive deformation of the pile body. As the pile foundation deforms, the balls 57 roll on the pile body, and the pigment overflows as the balls 57 roll. A number of balls 57 draw a number of thin lines through the pigment, serving as a rough reference for the test results. When the pressure applied by the pressing plate 44 to the pile foundation is too large, the top of the pile foundation cracks and the crushed stones fly. The protective cover 451 can protect the flying crushed stones and prevent the crushed stones from hurting people. The crushed stones that enter between the mesh cover 452 and the protective cover 451 are discharged from the trough body 453.

[0032] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A pile foundation settlement detection device for geotechnical engineering, characterized in that: include: A groove plate (1), wherein a column (2) is fixedly connected to the top of the groove plate (1), and a top plate (3) is fixedly connected to a side of the column (2) away from the groove plate (1); A settling mechanism (4), the settling mechanism (4) being fixedly connected to a side of the top plate (3) close to the groove plate (1); A detection mechanism (5), the detection mechanism (5) being fixedly connected to a side of the groove plate (1) close to the top plate (3); Wherein, the detection mechanism (5) comprises: A CCD camera (51), wherein a mounting plate (52) is fixedly connected to the surface of the CCD camera (51), and a side of the mounting plate (52) away from the CCD camera (51) is fixedly connected to the top of the groove plate (1); A detection plate (53), the detection plate (53) being arranged in a bent manner, and the detection plate (53) being made of an elastic material; A driving assembly (54), wherein the driving assembly (54) is fixedly connected to a side of the detection plate (53) away from the bending center, and the side of the driving assembly (54) away from the detection plate (53) is fixedly connected to the top of the groove plate (1).

2. A pile foundation settlement detection device for geotechnical engineering according to claim 1, characterized in that: The CCD cameras (51) are symmetrically arranged on the top of the groove plate (1), and two detection plates (53) are symmetrically arranged at the interval between the two CCD cameras (51), and the middle parts of the two detection plates (53) are bent towards a side away from each other.

3. A pile foundation settlement detection device for geotechnical engineering according to claim 2, characterized in that: The detection plate (53) is hollow, and a strip body (55) is fixedly connected to the inner side surface of the detection plate (53); a side of the strip body (55) close to the center of the groove plate (1) extends to the outside of the detection plate (53); a portion of the strip body (55) located inside the detection plate (53) is hydrophilic, and a side of the strip body (55) located outside the detection plate (53) is hydrophobic; the strip body (55) is arranged in a quasi-fold line shape, and balls (57) are arranged at the corners of the fold line of the strip body (55); the balls (57) are rotatably connected to the strip body (55), and the balls (57) extend into the hydrophilic portion of the strip body (55).

4. A pile foundation settlement detection device for geotechnical engineering according to claim 3, characterized in that: Sealing pads (56) are symmetrically arranged in the cavity of the detection plate (53), and the two sealing pads (56) respectively seal the two sides of the hollow part of the detection plate (53), the surface of the sealing pad (56) is fixedly connected to the inner side surface of the detection plate (53), and the sealing pad (56) is made of elastic material.

5. A pile foundation settlement detection device for geotechnical engineering according to claim 4, characterized in that: The driving assembly (54) comprises a first telescopic rod (541), the first telescopic rod (541) being symmetrically arranged with the CCD camera (51) as the center, a mounting seat (542) being fixedly connected to the surface of the first telescopic rod (541), a side of the mounting seat (542) away from the first telescopic rod (541) being fixedly connected to the top of the groove plate (1), one end of the two first telescopic rods (541) away from the mounting seat (542) being fixedly connected to a mounting block (543), a side of the mounting block (543) away from the first telescopic rod (541) being fixedly connected to a side of the detection plate (53) away from the ball bearing (57), and the two mounting blocks (543) being respectively arranged at two ends of the detection plate (53).

6. A pile foundation settlement detection device for geotechnical engineering according to claim 5, characterized in that: The sinking mechanism (4) comprises a hydraulic cylinder (41), the hydraulic cylinder (41) being arranged at the interval between the groove plate (1) and the top plate (3), a bracket (42) being fixedly connected to the surface of the hydraulic cylinder (41), the bracket (42) being fixedly connected to a side of the top plate (3) close to the groove plate (1), a hydraulic rod (43) being fixedly connected to a side of the hydraulic cylinder (41) away from the top plate (3), the hydraulic rod (43) being fixedly connected to an output end of the hydraulic cylinder (41), an end of the hydraulic rod (43) away from the hydraulic cylinder (41) being fixedly connected to a pressing plate (44), a protective component (45) being fixedly connected to the surface of the hydraulic rod (43), and the protective component (45) being sleeved on the outside of the pressing plate (44), and a fixing component (46) being fixedly connected to the inside of the groove plate (1).

7. A pile foundation settlement detection device for geotechnical engineering according to claim 6, characterized in that: The protection component (45) comprises a shield (451), the inner side surface of the shield (451) is fixedly connected to the surface of the hydraulic rod (43), the inner side surface of the shield (451) is fixedly connected to a mesh cover (452), and the pressure plate (44) is arranged inside the mesh cover (452), the mesh cover (452) is arranged in a wave shape, and the mesh cover (452) is made of an elastic material, and a groove body (453) is provided on a side of the shield (451) close to the groove plate (1), and a plurality of groove bodies (453) are evenly distributed along the circumference of the shield (451).

8. A pile foundation settlement detection device for geotechnical engineering according to claim 7, characterized in that: The outer side surface of the shield (451) is fixedly connected to a slide plate (454), and the inner side surface of the slide plate (454) is slidably connected to the surface of the column (2). A slide bar (455) is provided at the interval between the groove plate (1) and the slide plate (454). The slide bars (455) are symmetrically provided in two groups, and each group of the slide bars (455) is symmetrically provided with two slide bars (455). One end of the slide bar (455) away from the groove plate (1) passes through the slide plate (454), and the inner side surface of the slide plate (454) is slidably connected to the surface of the slide bar (455). One end of the two slide bars (455) in the same group away from the groove plate (1) is fixedly connected to an end plate (456), and the end plate (456) is provided on a side of the slide plate (454) away from the groove plate (1). A spring (457) is sleeved on the outside of the slide bar (455), and two ends of the spring (457) are respectively fixedly connected to the sides of the groove plate (1) and the slide plate (454) close to each other.

9. A pile foundation settlement detection device for geotechnical engineering according to claim 8, characterized in that: The fixing assembly (46) comprises a second telescopic rod (461), three of which are distributed on the inner circumference of the groove plate (1), the surface of the second telescopic rod (461) is fixedly connected to the inner side surface of the groove plate (1), a fixing plate (462) is provided at one end of the second telescopic rod (461) away from the groove plate (1), a curved groove (464) is provided on the surface of the fixing plate (462), the end of the second telescopic rod (461) away from the groove plate (1) extends to the inside of the curved groove (464), and the surface of the second telescopic rod (461) is slidably connected to the inner side surface of the fixing plate (462), and one end of the second telescopic rod (461) located inside the curved groove (464) is fixedly connected to a curved plate (465), and two ends of the curved plate (465) are respectively fixedly connected to two ends of the inner side surface of the curved groove (464).

10. A pile foundation settlement detection device for geotechnical engineering according to claim 9, characterized in that: A friction strip (463) is fixedly connected to a side of the fixed plate (462) away from the second telescopic rod (461); the friction strips (463) are evenly distributed on the side of the fixed plate (462) away from the second telescopic rod (461); and the friction strips (463) are made of elastic material in a wave shape.

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