Foundation pile perpendicularity rapid detection device, method and system

Abstract

The invention discloses a foundation pile perpendicularity rapid detection device, method and system, and relates to the field of foundation pile construction quality detection.The foundation pile perpendicularity rapid detection device comprises a vertical positioning probe and a cable connected with the vertical positioning probe; the vertical positioning probe comprises a three-axis acceleration sensor and at least three positioning modules arranged on the outer wall of the three-axis acceleration sensor; the positioning module comprises positioning assemblies and positioning wheels which are in one-to-one correspondence, and the positioning assemblies are used for fixing the corresponding positioning wheels to the three-axis acceleration sensor and adjusting the distance between the corresponding positioning wheels and the outer wall of the three-axis acceleration sensor in real time. The orthographic projections of all the positioning wheels are distributed on the outer edge of the three-axis acceleration sensor at equal intervals under the condition that no external force is applied to the positioning wheels; the method has the advantage of improving the detection efficiency.

Description

Technical Field

[0001] This invention relates to the field of pile construction quality inspection, and in particular to a rapid pile verticality detection device, method and system. Background Technology

[0002] In the field of pile construction quality inspection, the verticality deviation of piles is a key factor affecting the bearing capacity of piles and the safety of the project. The verticality of piles during the construction process mainly relies on the level instrument on the pile driver. However, the current inspection methods for detecting the verticality of piles after construction have many shortcomings. Traditional detection methods, such as using inclinometers, require pre-embedding an inclinometer tube with a guide groove in the pile body. During the detection, the probe is slowly lowered along the guide groove to the bottom of the tube, and it is necessary to stop at each measurement point (usually at 0.5-meter intervals) and take two measurements in both directions. The process is cumbersome, and it often takes several hours to detect a 30-meter-deep foundation pile.

[0003] Furthermore, once the inclinometer tube is installed, it cannot be moved or its direction changed. The fixed direction of its guide groove determines that it can only measure the tilt component in a single direction, and cannot fully reflect the actual maximum deviation direction and maximum tilt value of the pile in three-dimensional space. Another detection method based on optics or lasers, although it does not require the installation of a tube, is easily affected by dust, water vapor, and light conditions inside the borehole, resulting in insufficient measurement stability and reliability. In addition, the equipment cost is high, making it difficult to widely apply in engineering sites.

[0004] This invention aims to solve these problems by developing a novel method for detecting the tilt rate of foundation piles using acceleration sensing equipment. This method enables rapid and accurate detection of pile borehole deviation, providing an efficient means for controlling the quality of foundation pile construction. It belongs to the field of engineering testing technology. Summary of the Invention

[0005] The problem to be solved by the present invention is to provide a rapid detection device, method and system for foundation pile verticality, which can realize efficient detection of foundation pile verticality.

[0006] To solve the above-mentioned technical problems, the present invention provides a rapid detection device for the verticality of foundation piles, which includes: a vertical positioning probe and a cable connected to the vertical positioning probe. The vertical positioning probe includes a triaxial accelerometer and at least three positioning modules disposed on the outer wall of the triaxial accelerometer. The positioning module includes a one-to-one corresponding positioning component and positioning wheel. The positioning component is used to fix the corresponding positioning wheel on the triaxial accelerometer and adjust the distance between the corresponding positioning wheel and the outer wall of the triaxial accelerometer in real time. Under the condition that no external force is applied, the orthographic projections of all positioning wheels are equidistantly distributed on the outer edge of the triaxial accelerometer.

[0007] As an improvement to the above solution, the positioning component includes a first fixing member, a second fixing member, and an elastic member; the first fixing member is disposed on the outer wall of the triaxial accelerometer, one end of the second fixing member is connected to the corresponding positioning wheel, the other end of the second fixing member is movably connected to the first fixing member, and the elastic member is disposed at the connection between the second fixing member and the first fixing member and is used to adjust the included angle between the second fixing member and the first fixing member in real time so as to adjust the distance between the corresponding positioning wheel and the outer wall of the triaxial accelerometer in real time.

[0008] As an improvement to the above solution, the first fixing member is fixed to the outer wall of the triaxial accelerometer by the clamping member.

[0009] Accordingly, the present invention also provides a detection method based on the pile verticality detection device described in any one of the above claims, comprising: uniformly lowering the vertical positioning probe into the pile borehole via the cable; during the lowering process, the positioning wheel contacts the borehole wall to generate resistance, and the positioning component deforms under the action of the resistance to adjust the distance between the positioning wheel and the outer wall of the triaxial accelerometer in real time, so that the vertical positioning probe can move normally in the pile borehole; during the movement, the triaxial accelerometer collects triaxial acceleration data at different depths in real time; and calculates the deviation parameters of the pile borehole based on the triaxial acceleration data at different depths.

[0010] As an improvement to the above scheme, the step of calculating the deviation parameters of the pile borehole based on the triaxial acceleration data at different depths includes: preprocessing the triaxial acceleration data; verifying the preprocessed triaxial acceleration data; calculating the tilt angle and azimuth angle of the triaxial acceleration sensor at different depths based on the verified triaxial acceleration data; and calculating the deviation parameters of the pile borehole based on the tilt angle and azimuth angle at different depths, wherein the deviation parameters include cumulative horizontal deviation, total deviation angle, and deviation direction.

[0011] As an improvement to the above scheme, the formula for preprocessing the triaxial acceleration data is as follows:

[0012] in, This represents the mean of the filtered triaxial acceleration data. Indicates the size of the sliding window. express Three-axis acceleration data over a time period.

[0013] As an improvement to the above scheme, the step of verifying the preprocessed triaxial acceleration data includes: calculating a verification check value based on the preprocessed triaxial acceleration data; comparing the verification check value with gravitational acceleration; and when the difference between the verification check value and gravitational acceleration is within a preset range, it indicates that the triaxial acceleration data corresponding to the verification check value is valid. The formula for calculating the verification value is:

[0014] in, express Mean value of on-axis filtered acceleration data express Mean value of on-axis filtered acceleration data express Mean value of on-axis filtered acceleration data This represents the value of gravitational acceleration. This indicates the verification value.

[0015] As an improvement to the above scheme, the formula for calculating the cumulative horizontal offset is:

[0016] in, Indicates the first The depth difference between two adjacent points on the segment Indicates the first The angle of inclination on the segment, Indicates the first paragraph to the second paragraph. The cumulative horizontal deviation of the segment.

[0017] As an improvement to the above scheme, the formula for calculating the total skew angle is:

[0018] in, This indicates the cumulative horizontal offset at the bottom of the hole. Indicates the total depth of the borehole. This indicates the total offset angle of the borehole.

[0019] As an improvement to the above scheme, the calculation step of the deflection direction includes: calculating the azimuth angle based on the verified acceleration data. The degree of deviation is determined based on the azimuth angle, wherein: when The direction of the slant is north-northeast. Spend; when The direction of the slant is east-southeast. -90) ; when The direction of the deflection is south by west ( -180) ; when The direction of the slant is west-northwest. -270) .

[0020] As an improvement to the above scheme, the calculation step of the deflection direction includes: calculating the azimuth angle based on the verified acceleration data. ; Accumulate the offset distance of the deepest point By azimuth Decomposed into north-south components and east-west component ,in:

[0021]

[0022] When the north-south component Positive values ​​indicate a northward deviation, while negative values ​​indicate a southward deviation. When the east-west component A positive value indicates a deviation to the east, while a negative value indicates a deviation to the west.

[0023] As an improvement to the above scheme, the formula for calculating the azimuth angle is:

[0024] in, express On-axis filtered mean acceleration express On-axis filtered mean acceleration Indicates the azimuth angle.

[0025] Accordingly, the present invention also provides a rapid pile verticality detection system, comprising: the pile verticality detection device and computer equipment as described in any of the above claims, wherein the computer equipment includes a storage device and a processor, the storage device stores a computer program, and the processor executes the computer program to implement a rapid pile verticality detection method as described in any of the above claims.

[0026] Implementing this invention has the following beneficial effects: The core of this invention lies in utilizing the principle of gravity vector sensing. Through an acceleration sensing probe with an anti-rotation positioning wheel structure, triaxial acceleration data is continuously collected at different depths during the uniform descent into the borehole. Continuous data acquisition is achieved through uniform descent, and vibration noise is processed by a moving average filtering algorithm, which greatly improves the detection efficiency.

[0027] Through a unique algorithm, the tilt angle and azimuth of the pile are directly calculated from the acceleration data, and then the cumulative horizontal offset, total tilt angle and precise tilt direction are synthesized and calculated. This automatically completes the entire process from data preprocessing and attitude calculation to tilt parameter calculation, without the need for manual intervention and complex calculations, thus reducing the operational threshold. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the first embodiment of the rapid detection device for the verticality of foundation piles according to the present invention; Figure 2 This is a structural diagram of the positioning component of a rapid pile verticality detection device according to the present invention; Figure 3 This is a structural diagram of the clamping component of a rapid pile verticality detection device according to the present invention; Figure 4 This is a schematic diagram of the second embodiment of the rapid detection device for the verticality of foundation piles according to the present invention; Figure 5 This is a flowchart of an embodiment of the rapid detection method for the verticality of foundation piles according to the present invention; Figure 6 This is a data processing flowchart of a rapid pile verticality detection method according to the present invention; Figure 7 This is a schematic diagram of the horizontal offset of a rapid detection method for the verticality of foundation piles according to the present invention; Figure 8 This is a schematic diagram of the tilt angle and depth difference in a rapid detection method for the verticality of foundation piles according to the present invention; Figure 9 This is a schematic diagram of an embodiment of the rapid detection system for the verticality of foundation piles according to the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0030] like Figure 1 As shown, Figure 1 The diagram shows a structural diagram of a first embodiment of a rapid pile verticality detection device of the present invention, which includes: a vertical positioning probe and a cable 4 connected to the vertical positioning probe. The vertical positioning probe includes a triaxial acceleration sensor 1 and at least three positioning modules disposed on the outer wall of the triaxial acceleration sensor 1. In this embodiment, four positioning modules can be provided.

[0031] The positioning module includes a one-to-one corresponding positioning component 2 and positioning wheel 8. The positioning component 2 is used to fix the corresponding positioning wheel 8 on the triaxial accelerometer 1 and adjust the distance between the corresponding positioning wheel 8 and the outer wall of the triaxial accelerometer 1 in real time. Under the condition that no external force is applied, the orthographic projections of all positioning wheels 8 are equally distributed on the outer edge of the triaxial accelerometer 1.

[0032] Specifically, the triaxial accelerometer 1 can employ a high-precision, low-noise MEMS (Micro-Electro-Mechanical Systems) accelerometer chip, capable of synchronously and continuously measuring the acceleration components in the three orthogonal directions (X, Y, and Z) at the probe's location. Its measurement range typically covers -5g to +5g, with a resolution of 0.001g, meeting the accuracy requirements of engineering testing. The sensor is rigidly fixed inside the probe housing, and its measurement axis has a clear correspondence with the geometric axis of the probe housing.

[0033] like Figure 2 As shown, the positioning component 2 includes a first fixing member 7, a second fixing member 5, and an elastic member 6; the first fixing member 7 is disposed on the outer wall of the triaxial accelerometer 1, one end of the second fixing member 5 is connected to the corresponding positioning wheel 8, and the other end of the second fixing member 5 is movably connected to the first fixing member 7; the elastic member 6 is disposed at the connection between the second fixing member 5 and the first fixing member 7 and is used to adjust the included angle between the second fixing member 5 and the first fixing member 7 in real time so as to adjust the distance between the corresponding positioning wheel 8 and the outer wall of the triaxial accelerometer 1 in real time.

[0034] This design enables the positioning wheel 8 to have radial elastic extension and contraction capabilities, thus allowing it to adaptively and tightly abut against the inner wall of the borehole 3 with different diameters or slight unevenness. By forming a stable constraint at at least four points in a plane perpendicular to the measurement axis, it effectively prevents the probe from rotating around its axis during the lowering process inside the borehole 3. This ensures that the orientation information measured by the accelerometer 1 (represented by X and Y axis data) maintains a stable correspondence with the geographic coordinate system, laying the foundation for accurate calculation of the deflection direction.

[0035] The cable 4 is used to transmit the raw triaxial acceleration data acquired by the vertical positioning probe to the computer device and simultaneously enable the vertical positioning probe to move at a constant speed within the borehole 3. Furthermore, the cable 4 is a tensile-resistant and waterproof special cable, and its length is designed according to the common foundation pile drilling depth, such as 50 meters or 100 meters. In addition, by setting precise length marks or integrating photoelectric encoders, the lowering depth of the vertical positioning probe within the borehole 3 can be known in real time and accurately.

[0036] Therefore, the present invention utilizes the sensitivity of the accelerometer 1 to the gravitational acceleration component to lower an accelerometer device with at least three positioning modules into the pile borehole 3. The positioning modules can effectively prevent the sensor from rotating in the hole, ensuring accurate detection of the pile's deviation direction and tilt value.

[0037] like Figure 3 As shown, the rapid detection device for the verticality of the foundation pile also includes a clamping member 9, which is used to fix the acceleration sensing device before it is lowered. The clamping member 9 is arc-shaped to adapt to the shape of the outer wall of the triaxial acceleration sensor 1 and the inner wall of the foundation pile borehole 3. like Figure 4 As shown, Figure 4 This diagram shows a structural diagram of a second embodiment of a rapid pile verticality detection device according to the present invention. Figure 1 Unlike the first embodiment shown, the rapid detection device for the verticality of the foundation pile in this embodiment also includes a cable reel 10, which is used to store the cable 4. Furthermore, the reel is equipped with a switch 11 and an indicator light 12. The switch 11 is used to control the power supply of the device, and the indicator light 12 can display the working status of the device.

[0038] During operation, the operator places the vertical positioning probe into the borehole and lowers it at a constant speed via cable 4. Under the action of gravity, the probe is guided by the anti-rotation positioning component 2 and descends stably along the wall of the borehole 3. It should be noted that when borehole 3 is deviated, the gravitational acceleration component sensed by accelerometer 1 at different depths of borehole 3 will change. By measuring the output data of accelerometer 1 at different depths, the variation law of gravitational acceleration component can be analyzed, and then the deviation angle and deviation direction of the pile borehole 3 can be calculated, so as to realize the detection of the deviation of borehole 3.

[0039] like Figure 5 As shown, the present invention also proposes a detection method for the pile verticality detection device based on the aforementioned rapid pile verticality detection device, which includes: S1, the vertical positioning probe is lowered into the pile borehole at a constant speed via the cable; Before testing, the accelerometer is calibrated to ensure its measurement accuracy. The status of the four mutually perpendicular positioning wheels on the accelerometer is checked to ensure they are working properly. At the same time, the accelerometer is fixed on the clamping device, and the connection between the cable and the reel is checked to ensure it is secure. The switch on the reel is turned on, and the indicator light is observed to show the device's working status normally. In addition, the corresponding computer device needs to be started to ensure that its wireless connection with the accelerometer is normal, in preparation for data acquisition and processing.

[0040] S2, during the lowering process, the positioning wheel contacts the hole wall of the pile borehole to generate resistance. The positioning component deforms under the action of the resistance to adjust the distance between the positioning wheel and the outer wall of the triaxial accelerometer in real time, so that the vertical positioning probe can move normally in the pile borehole. Specifically, the clamping device with the fixed acceleration sensor is slowly lowered into the pile borehole to ensure that the positioning component is in contact with the borehole wall and to prevent the sensor from rotating; at the same time, the lowering speed of the cable is controlled by the reel to maintain a uniform lowering speed within a suitable range. Typically, the estimated testing time for a 30m pile is about 5 minutes. The sampling interval of the measuring points can also be selected as needed to avoid affecting the testing efficiency and data stability due to issues such as the lowering speed, while ensuring the stability of the measurement data.

[0041] S3, During the movement, the triaxial accelerometer collects triaxial acceleration data at different depths in real time; Specifically, during the lowering process inside the borehole, the acceleration sensing device collects acceleration data at different depths in real time. Several sets of positioning components ensure that the sensor does not rotate, and can accurately detect the pile body's deviation direction and tilt value. The data is transmitted to a computer device via cable or wireless means; the computer device can record the collected data in real time, including depth information (which can be obtained through the length of the cable or the depth sensor built into the device) and the corresponding acceleration component data.

[0042] S4. Calculate the deviation parameters of the pile borehole based on the triaxial acceleration data at different depths.

[0043] like Figure 6 As shown, the calculation of the deviation parameters of the pile borehole 3 based on the triaxial acceleration data at different depths further includes the following steps: S41. Preprocess the triaxial acceleration data; Based on the actual working scenario, when the acceleration sensor descends in the borehole 3, there will be mechanical vibrations from the swaying of the cable, slight friction and collision with the borehole wall, and electronic noise from the inherent small random fluctuations in the sensor's circuitry and signal transmission process. These factors cause the raw acceleration signal collected by the sensor to be not a smooth straight line, but a fluctuating curve with "spiky" edges. If this data with "spiky" edges is used directly for calculation, the resulting tilt angle will also jump, leading to inaccurate and unreliable results.

[0044] Specifically, preprocessing is the process of filtering the noise, which can be based on the following formula:

[0045] in: This represents the mean of the three-axis (x / y / z) acceleration data after filtering; This indicates the size of the sliding window (5-10 is recommended to balance real-time performance and stability). express Three-axis acceleration data over a time period.

[0046] In each calculation, the above formula moves the window forward by one time point, discarding the earliest data point and adding the most recently collected data point. This ensures that a single abnormal "spurt" point at a certain moment (such as a momentary large value caused by vibration) will have its impact "diluted" by other normal values ​​within the window after participating in an average calculation, thus not causing a drastic impact on the final result.

[0047] S42. Verify the preprocessed triaxial acceleration data; The step of verifying the preprocessed triaxial acceleration data includes: (1) Calculate the verification value based on the preprocessed triaxial acceleration data; (2) Compare the verification value with the gravitational acceleration. When the verification value is approximately equal to the gravitational acceleration, the triaxial acceleration data corresponding to the verification value is deemed valid.

[0048] Specifically, the formula for calculating the verification value based on the preprocessed triaxial acceleration data is as follows:

[0049] in: express Mean value of on-axis filtered acceleration data; express Mean value of on-axis filtered acceleration data; express Mean value of on-axis filtered acceleration data; This represents the acceleration due to gravity (approximately 9.8 m / s²). This indicates the verification value.

[0050] In physics, when the sensor is basically stationary (only gravity is acting), the vector resultant of the accelerations along the three axes should be approximately equal to the gravitational acceleration g (approximately 9.8 m / s²). This concept is used to verify the validity of the data.

[0051] S43. Based on the verified triaxial acceleration data, calculate the tilt angle and azimuth angle of the triaxial acceleration sensor 1 at different depths; When the vertical positioning probe descends slowly and uniformly within borehole 3 or briefly remains stationary at a measurement point, the main external force acting on the probe is gravity. At this time, the probe is in a "quasi-static" state, and what the triaxial accelerometer 1 measures is essentially the component of the gravitational acceleration vector (g) along its three axes (X, Y, Z). However, when borehole 3 is deflected and the probe tilts by an angle θ, the gravitational vector (g) is no longer parallel to the probe's Z-axis sensor. That is, the gravitational acceleration g can be decomposed into two components, so the solution can be obtained based on the relationship between the tilt angle and the gravitational acceleration. Specifically, the tilt angle is calculated as follows:

[0052] in: express ; This represents the value of gravitational acceleration; Indicates the tilt angle.

[0053] The azimuth angle The tilt direction is determined by calculating the projection direction of the gravitational acceleration vector onto the sensor's horizontal plane (XY plane). Since the acceleration direction measured by the sensor is opposite to the direction of gravity, the filtered acceleration value... and Take the negative and reuse The function calculates the angle between the azimuth and true north; this angle is the azimuth angle. Its value range is from 0° to 360°, which can accurately reflect the tilt direction of borehole 3 on the horizontal plane; Specifically, the azimuth angle can be calculated using the following formula:

[0054] in: express Mean value of on-axis filtered acceleration data; express Mean value of on-axis filtered acceleration data; Indicates the azimuth angle.

[0055] S4. Calculate the deviation parameters of the pile borehole 3 based on the inclination angle and azimuth angle at different depths. Specifically, the skew parameters include cumulative horizontal offset, total skew angle, and skew direction. The calculation methods for cumulative horizontal offset, total skew angle, and skew direction are explained in detail below: I. Cumulative Horizontal Deviation like Figure 7 and Figure 8 As shown, the formula for calculating the horizontal offset is as follows:

[0056] in: Indicates the first The horizontal offset of the segment; Indicates the first The depth difference between two adjacent points on a segment; Indicates the first The angle of inclination on the segment; From the top of borehole 3 (depth) Starting from this point, the depth is [missing information]. , , ,… The depth difference between two adjacent measurement points is (i.e., "segment length"); The formula for calculating the cumulative horizontal offset using the depth difference and the tilt angle is as follows:

[0057] in: Indicates the first The horizontal offset of the segment; Indicates the first The depth difference between two adjacent points on a segment; Indicates the first The angle of inclination on the segment; Indicates the first paragraph to the second paragraph. The cumulative horizontal deviation of the segment.

[0058] II. Total Skew Angle The formula for calculating the total skew angle based on the cumulative horizontal offset is as follows:

[0059] in: Indicates the cumulative horizontal offset at the bottom of the hole; This indicates the total depth of borehole 3; This indicates the total offset angle of borehole 3.

[0060] III. Direction of Deviation Specifically, the method for calculating the deflection direction based on the azimuth angle includes: (1) Calculate the azimuth angle based on the verified acceleration data. ; (2) Determine the degree of deviation based on the azimuth angle value: when The direction of the slant is north-northeast. Spend; when The direction of the slant is east-southeast. -90) ; when The direction of the deflection is south by west ( -180) ; when The direction of the slant is west-northwest. -270) .

[0061] More preferably, when a more precise skew direction is required, the skew direction can be calculated using the following method: (1) Calculate the azimuth angle based on the verified acceleration data. ; (2) Based on the cumulative offset distance of the deepest point By azimuth Decomposed into north-south components and east-west component ;

[0062]

[0063] in: Indicates the cumulative horizontal offset at the bottom of the hole; Indicates the azimuth angle of the bottom of the hole; This indicates the northward offset of the bottom of the hole; This indicates the eastward offset of the bottom of the hole.

[0064] When the north-south component Positive values ​​indicate a northward deviation, while negative values ​​indicate a southward deviation. When the east-west component A positive value indicates a deviation to the east, while a negative value indicates a deviation to the west.

[0065] like Figure 9 As shown, the present invention also proposes a rapid pile verticality detection system, which includes the rapid pile verticality detection device and a computer device 13. The computer device 13 includes a storage unit and a processor. The storage unit stores a computer program. When the processor executes the computer program, it implements the detection method of the pile verticality detection device.

[0066] In summary, the present invention provides a rapid detection method for the verticality of foundation piles. By using an acceleration sensing probe with an anti-rotation positioning component and its algorithm, the detection time is reduced from several hours to a few minutes, achieving truly rapid detection and greatly meeting the requirements of construction schedule. At the same time, its unique anti-rotation structure combined with the azimuth angle calculation algorithm achieves accurate measurement of the true three-dimensional deviation direction of the foundation pile for the first time under a low-cost solution.

[0067] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A pile verticality testing device, characterized in that, It includes a vertical positioning probe and a cable connected to the vertical positioning probe. The vertical positioning probe includes a triaxial accelerometer and at least three positioning modules disposed on the outer wall of the triaxial accelerometer. The positioning module includes a one-to-one corresponding positioning component and positioning wheel. The positioning component is used to fix the corresponding positioning wheel on the triaxial accelerometer and adjust the distance between the corresponding positioning wheel and the outer wall of the triaxial accelerometer in real time. Under the condition that no external force is applied, the orthographic projections of all positioning wheels are equidistantly distributed on the outer edge of the triaxial accelerometer.

2. The pile verticality testing device as described in claim 1, characterized in that, The positioning component includes a first fixing member, a second fixing member, and an elastic member; The first fixing member is disposed on the outer wall of the triaxial accelerometer. One end of the second fixing member is connected to the corresponding positioning wheel, and the other end of the second fixing member is movably connected to the first fixing member. The elastic member is disposed at the connection between the second fixing member and the first fixing member and is used to adjust the included angle between the second fixing member and the first fixing member in real time so as to adjust the distance between the corresponding positioning wheel and the outer wall of the triaxial accelerometer in real time.

3. The pile verticality detection device as described in claim 2, characterized in that, It also includes a clamping member, through which the first fixing member is fixed to the outer wall of the triaxial accelerometer.

4. A method for detecting the verticality of foundation piles based on the pile verticality detection device according to any one of claims 1-3, characterized in that, include: The vertical positioning probe is lowered into the pile borehole at a constant speed using the cable. During the lowering process, the positioning wheel contacts the hole wall of the pile borehole to generate resistance. The positioning component deforms under the action of the resistance to adjust the distance between the positioning wheel and the outer wall of the triaxial accelerometer in real time, so that the vertical positioning probe can move normally in the pile borehole. During the movement, the triaxial accelerometer collects triaxial acceleration data at different depths in real time; The deviation parameters of the pile borehole are calculated based on the triaxial acceleration data at different depths.

5. The method for rapid detection of pile verticality as described in claim 4, characterized in that, The step of calculating the deviation parameters of the pile borehole based on the triaxial acceleration data at different depths includes: The triaxial acceleration data is preprocessed; The preprocessed triaxial acceleration data were then verified. Based on the verified triaxial acceleration data, the tilt angle and azimuth angle of the triaxial accelerometer at different depths are calculated. Based on the inclination angle and azimuth angle at different depths, the deviation parameters of the pile borehole are calculated. The deviation parameters include the cumulative horizontal deviation, the total deviation angle, and the deviation direction.

6. The method for rapid detection of pile verticality as described in claim 5, characterized in that, The formula for preprocessing the triaxial acceleration data is as follows: in, This represents the mean of the filtered triaxial acceleration data. Indicates the size of the sliding window. express Three-axis acceleration data over a time period.

7. The method for rapid detection of pile verticality as described in claim 5, characterized in that, The step of verifying the preprocessed triaxial acceleration data includes: The verification value is calculated based on the preprocessed triaxial acceleration data. The verification value is compared with the gravitational acceleration. If the difference between the verification value and the gravitational acceleration is within a preset range, it indicates that the triaxial acceleration data corresponding to the verification value is valid. The formula for calculating the verification value is: in, express Mean value of on-axis filtered acceleration data express Mean value of on-axis filtered acceleration data express Mean value of on-axis filtered acceleration data This represents the value of gravitational acceleration. This indicates the verification value.

8. The method for rapid detection of pile verticality as described in claim 5, characterized in that, The formula for calculating the cumulative horizontal offset is: in, Indicates the first The depth difference between two adjacent points on the segment Indicates the first The angle of inclination on the segment, Indicates the first paragraph to the second paragraph. The cumulative horizontal deviation of the segment.

9. The method for rapid detection of pile verticality as described in claim 5, characterized in that, The formula for calculating the total skew angle is: in, This indicates the cumulative horizontal offset at the bottom of the hole. Indicates the total depth of the borehole. This indicates the total offset angle of the borehole.

10. The method for rapid detection of pile verticality as described in claim 5, characterized in that, The steps for calculating the skew direction include: Calculate the azimuth angle based on the verified acceleration data. ; The degree of deviation is determined based on the azimuth angle, wherein: when The direction of the slant is north-northeast. Spend; when The direction of the slant is east-southeast. -90) ; when The direction of the deflection is south by west ( -180) ; when The direction of the slant is west-northwest. -270) .

11. The method for rapid detection of pile verticality as described in claim 5, characterized in that, The steps for calculating the skew direction include: azimuth angle is calculated based on the verified acceleration data. ; Accumulate the offset distance of the deepest point By azimuth Decomposed into north-south components and east-west component ,in: When the north-south component Positive values ​​indicate a northward deviation, while negative values ​​indicate a southward deviation. When the east-west component A positive value indicates a deviation to the east, while a negative value indicates a deviation to the west.

12. The method for rapid detection of pile verticality as described in claim 7, characterized in that, The formula for calculating the azimuth angle is: in, express On-axis filtered mean acceleration express On-axis filtered mean acceleration Indicates the azimuth angle.

13. A rapid detection system for the verticality of foundation piles, characterized in that, include: The pile verticality detection device and computer equipment according to any one of claims 1-3, wherein the computer equipment includes a storage device and a processor, the storage device stores a computer program, and the processor executes the computer program to implement the rapid pile verticality detection method according to any one of claims 5-11.

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