Static pressure pile perpendicularity detection method

Abstract

The invention discloses a static pressure pile perpendicularity detection method, which relates to the technical field of static pressure pile detection, and comprises the following steps: analyzing to obtain the horizontal offset between the upper and lower sections of a static pressure pile according to the circle center coordinates of the upper and lower sections of the static pressure pile; according to the horizontal offset between the upper section and the lower section of the static pressure pile and the circle center elevation of the upper section and the lower section, the slope rate between the upper section and the lower section of the static pressure pile is obtained through calculation, and the perpendicularity condition of the static pressure pile can be comprehensively evaluated through the two key parameters of the horizontal offset and the slope rate. The inclination rate comprehensively considers the height difference of the pile body in the vertical direction and the deviation of the pile body in the horizontal direction, the inclination degree of the pile body can be more visually reflected, a more comprehensive and accurate evaluation result is provided for static pressure pile perpendicularity detection, whether the pile body meets engineering requirements or not can be better judged, the measurement precision is improved, personal errors are reduced, and the accuracy of static pressure pile perpendicularity detection is improved. And the reliability and repeatability of the result are enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of static pressure pile detection, and in particular relates to a static pressure pile verticality detection method. Background Art

[0002] In construction projects, static piles are a commonly used foundation form, and their verticality is crucial to the structural stability and safety of the entire building. Static piles that do not meet the verticality requirements may cause serious problems such as uneven settlement of the building, structural tilting, and even collapse. Therefore, in order to ensure the quality of the project, an accurate and reliable static pile verticality detection method is required;

[0003] With the continuous development of measurement technology, the widespread application of advanced measuring instruments has provided new technical means for static pile verticality detection. The total station has high-precision angle and distance measurement functions, as well as powerful data processing capabilities, which can provide more accurate data support for static pile verticality detection. At the same time, the prism-free measurement function of the total station can also achieve non-contact measurement, improving measurement efficiency and safety. Based on these technical advantages, it is of great practical significance to develop a static pile verticality detection method based on the total station.

[0004] However, some traditional static pile verticality detection methods only rely on simple tools and visual inspection to judge the verticality of the pile body, which is difficult to accurately measure the slight inclination and cannot meet the high-precision requirements of modern construction projects. At the same time, some detection methods still require manual installation of measuring equipment on the pile body or close-range measurement operations. This measurement method is not only inefficient, but also requires surveyors to perform high-altitude operations around the pile body or operate in a complex construction environment during the measurement process, which poses a great safety risk. Based on this, a static pile verticality detection method is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an information interaction method for power field operations, which solves the technical problem that some traditional static pressure pile verticality detection methods only rely on simple tools and visual inspection to judge the verticality of the pile body, are difficult to accurately measure tiny inclinations, and cannot meet the high-precision requirements of modern construction projects.

[0006] A method for detecting the verticality of a static pressure pile comprises the following steps:

[0007] Step 1: Set known points A and B, and set up the total station at known point A;

[0008] Step 2: Establish a coordinate system based on the three-dimensional coordinates of known points A and B;

[0009] Step 3: Measure the eccentricity of the upper cross section and the lower cross section of the static pressure pile, and analyze and obtain the center coordinates of the upper and lower cross sections of the static pressure pile;

[0010] Step 4: Analyze and obtain the horizontal offset between the upper and lower sections of the static pressure pile according to the center coordinates of the upper and lower sections of the static pressure pile;

[0011] Step 5: Calculate the inclination rate between the upper and lower sections of the static pressure pile according to the horizontal offset between the upper and lower sections and the center elevation of the upper and lower cross sections;

[0012] Step 6: Compare the tilt rate with a preset standard value to determine whether a tilt signal is generated.

[0013] As a further solution of the present invention: the specific method of analyzing and obtaining the center coordinates of the upper and lower cross sections of the static pressure pile is:

[0014] Draw the connecting line L1 between known points A and B, and the tangent lines L4 and L2 between known point A and the circular contour line of the cross section on the static pressure pile in the coordinate system; define the connecting line between the center point of the circular contour line of the cross section on the static pressure pile and the known point A as L3, and obtain the angle β1 between L3 and L1 and the angle β2 between L3 and L1; calculate the direction angle θ of the center point of the static pressure pile through the angles β and β2, and after correcting the total station according to the direction angle θ of the center point of the static pressure pile, measure the slant distance S and zenith distance V from the total station to the surface of the static pressure pile, and mark the three-dimensional coordinates of the known point A as A (XA, YA, HA), and calculate the center coordinates P0 (X0, Y0, Z0) of the cross section on the static pressure pile according to the coordinates, slant distance and zenith distance of the known point A, and calculate the center coordinates P0′ (X0′, Y0′, Z0′) of the cross section below the static pressure pile in the same way.

[0015] As a further solution of the present invention: obtain the product of the sum of the projection distance S·sinV of the tangent point of the upper cross section in the axial direction relative to the total station and the radius R of the upper cross section multiplied by the cosine value of the coordinate azimuth αAP0 of the center of the cross section on the known point A, and then sum it with the abscissa HA of the known point A as the abscissa X0 of the coordinate of the center of the cross section on the static pressure pile;

[0016] Obtain the sum of the projection distance S·si nV of the tangent point of the upper cross section in the axial direction relative to the total station and the radius R of the upper cross section, multiply it by the sine value of the coordinate azimuth αAP0 from the known point A to the center of the upper cross section, and then sum it with the ordinate YA of the known point A as the ordinate Y0 of the center coordinate of the upper cross section of the static pressure pile;

[0017] The sum of the elevation HA of the known point A, the projection distance S·cosV from the total station to the tangent point of the lower cross section in the horizontal direction relative to the total station, and the correction parameter i is taken as the elevation H0 of the center coordinates of the cross section under the static pressure pile. The center coordinates of the cross section under the static pressure pile are calculated in the same way.

[0018] As a further solution of the present invention: the specific method of obtaining the horizontal offset between the upper and lower sections of the static pressure pile is:

[0019] The square root of the sum of the squares of the offsets of the center points of the upper and lower cross sections of the static pressure pile in the abscissa and ordinate directions is defined as the horizontal offset P0P0′ between the upper and lower cross sections of the static pressure pile.

[0020] As a further solution of the present invention: the specific method of obtaining the offset of the center of the upper and lower cross-sections of the static pressure pile in the horizontal coordinate direction is:

[0021] First, multiply the sum of the projection distance S·si nV of the tangent point of the upper cross section in the axial direction relative to the total station and the radius R of the upper cross section by the cosine value of the coordinate azimuth αAP0 related to the known point A to the center of the upper cross section, and then subtract the product of the sum of the projection distance S′·si nV′ of the tangent point of the lower cross section in the axial direction relative to the total station and the radius R′ of the lower cross section and the cosine value of the coordinate azimuth αAP0′ related to the known point A to the center of the lower cross section, and then obtain the offset △X of the center of the upper and lower cross sections of the static pressure pile in the horizontal direction.

[0022] As a further solution of the present invention: the specific method of obtaining the offset of the center of the upper and lower cross-sections of the static pressure pile in the ordinate direction is:

[0023] First, multiply the sum of the projection distance S·si nV of the tangent point of the upper cross section in the axial direction relative to the total station and the radius R of the upper cross section by the sine value of the coordinate azimuth αAP0 related to the known point A to the center of the upper cross section, and then subtract the product of the sum of S′·si nV′ of the tangent point of the lower cross section in the axial direction relative to the total station and the radius R′ of the lower cross section and the cosine value of the coordinate azimuth αAP0′ related to the known point A to the center of the lower cross section, and then obtain the offset △Y of the center of the upper and lower cross sections of the static pressure pile in the ordinate direction.

[0024] As a further solution of the present invention: the specific method of obtaining the inclination rate between the upper and lower sections of the static pressure pile is:

[0025] The inclination rate is equal to the horizontal offset between the upper and lower sections of the static pressure pile divided by the elevation difference between the centers of the upper and lower cross-sections of the static pressure pile, where the elevation difference is equal to the absolute value of the difference between the elevations of the centers of the upper and lower cross-sections.

[0026] As a further solution of the present invention: the specific method of determining the generation of the tilt signal is:

[0027] The tilt rate is compared with a preset standard value. When the tilt rate is greater than the preset standard value, a tilt signal is generated, otherwise no processing is performed.

[0028] As a further solution of the present invention: the displacement trend of the static pressure pile is determined according to the displacement of the center of the cross section in the horizontal and vertical coordinate directions, specifically in the following manner;

[0029] If the offset △X of the center of the upper and lower cross-sections of the static pressure pile in the horizontal coordinate direction is a positive value, it means that the static pressure pile has a tendency to deviate in the positive direction of the X-axis, and if △X is a negative value, it means that the static pressure pile has a tendency to deviate in the negative direction of the X-axis; if the offset △Y of the center of the upper and lower cross-sections of the static pressure pile in the vertical coordinate direction is a positive value, it means that the static pressure pile has a tendency to deviate in the positive direction of the Y-axis, and if △Y is a negative value, it means that the static pressure pile has a tendency to deviate in the negative direction of the Y-axis.

[0030] As a further solution of the present invention: the specific method of calculating the direction angle of the center point of the static pressure pile is:

[0031] Half of the difference between the angles β1 and β2 is taken as the direction angle θ of the center point of the static pressure pile. According to the angle corresponding to the direction angle θ of the center point of the static pressure pile, the total station is rotated to aim at the direction of the center point of the static pressure pile so that the deviation angle of the total station is zero, thereby realizing the deviation correction of the total station.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The present invention, by establishing a coordinate system based on known points A and B, can not only calculate the coordinates of the center of the upper and lower cross-sections of the static pile, but also further calculate the horizontal offset and inclination between the upper and lower sections. The verticality of the static pile can be comprehensively evaluated by the two key parameters of the horizontal offset and the inclination. The inclination comprehensively considers the height difference of the pile body in the vertical direction and the offset in the horizontal direction, and can more intuitively reflect the inclination of the pile body, providing a more comprehensive and accurate evaluation result for the verticality detection of the static pile, which helps to better judge whether the pile body meets the engineering requirements, improves the measurement accuracy, reduces human errors, and enhances the reliability and repeatability of the results.

[0034] (2) The present invention determines the inclination direction according to the offset of the center of the upper and lower cross-sections of the static pressure pile in the horizontal and vertical coordinate directions. According to the inclination direction of the static pressure pile, the position and angle of the pile driver can be adjusted in time during the construction process, avoiding re-construction due to the inclination of the pile body not meeting the requirements, and reducing the waste of static pressure pile materials. By timely correcting the inclination of the pile body, it can ensure that each pile can be effectively utilized, reduce material costs, ensure that the final verticality of the static pressure pile meets the engineering requirements, and improve construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the process of the present invention;

[0036] Figure 2A schematic diagram of a coordinate system of the present invention;

[0037] Figure 3 It is a schematic diagram of the horizontal offset between the upper and lower sections of the static pressure pile of the present invention. DETAILED DESCRIPTION

[0038] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] See also Figure 1-Figure 3 The present application provides a method for detecting the verticality of a static pile, comprising the following steps:

[0041] Step 1: Set known points A and B, set up a total station on known point A, accurately center and level the total station, ensure that the instrument is in a horizontal and vertical state, and use the total station to measure the upper and lower cross sections of the static pressure pile. The specific method is as follows:

[0042] Known points A and B are set on the ground in the static pressure pile measurement area to obtain the coordinates of the known points A and B. The coordinates of the known points A and B are accurately measured in advance. The coordinates of the known points A and B are usually determined by professional surveyors through higher-level measurement methods, such as GPS measurement, precision wire measurement, etc. The specific measurement methods are existing and mature technologies, so they are not described in detail here.

[0043] It should be noted that the selected known point B should satisfy good visibility with the known point A in the static pressure pile measurement area, that is, point B can be clearly seen when the total station is set up from point A, and the line of sight will not be blocked by obstacles when measuring the upper and lower cross sections of the static pressure pile.

[0044] The known point B provides reference coordinates so that these coordinates can be compared and corrected during the measurement process. By looking back at the known point B, the errors caused by improper instrument installation or environmental factors can be effectively eliminated or reduced, thereby improving the reliability and accuracy of the measurement results, providing the necessary calibration and reference for the measurement process, and ensuring the accuracy of the measurement results.

[0045] Step 2: Input the 3D coordinates of known points A and B into the total station and establish a coordinate system based on known points A and B. The specific method is as follows:

[0046] After setting up the total station on the known point A, enter the three-dimensional coordinates of the known points A and B in the total station. At the same time, you also need to enter the instrument height (the vertical distance from the center of the total station telescope to the ground point A) and the prism height (the vertical distance from the center of the prism to the measuring point on the static pressure pile). The accurate input of these parameters is crucial to the accuracy of the subsequent measurement data. After completing the parameter input, use the rear-view function of the total station to aim the telescope at the known point B. This is to eliminate the system error of the instrument itself and ensure the accuracy of the measurement data. At this time, the total station will automatically calculate the coordinate azimuth from A to B based on the input known points A and B coordinates and the instrument's own measurement principle, and orient the instrument's horizontal dial to that direction. In this way, the total station establishes a coordinate system based on the known points A and B, and the subsequent measurement data of the static pressure pile will be calculated and recorded based on this coordinate system.

[0047] By setting known points A and B and establishing a coordinate system, an accurate reference frame is provided for the measurement of static pressure piles. Measuring and calculating in this coordinate system can effectively reduce the impact of the measurement environment and the instrument's own errors. For example, the total station can determine the measurement direction more accurately by looking back at the known point B for orientation, which improves the measurement accuracy compared to some traditional relative measurement methods.

[0048] Step 3: Draw the upper cross section and lower cross section images of the static pressure pile in the coordinate system, and measure the eccentricity of the static pressure pile on the upper cross section and lower cross section of the static pressure pile, and then obtain the center coordinates of the upper cross section and lower cross section of the static pressure pile. The specific method is as follows:

[0049] Draw the known points A and B in the coordinate system, draw the connecting line L1 between the known points A and B, and the upper and lower tangent lines L4 and L2 between the known point A and the circular contour line of the cross section on the static pressure pile, and define the connecting line between the center point of the circular contour line of the cross section on the static pressure pile and the known point A as L3, and mark the upper and lower tangent points between the known point A and the circular contour line of the cross section on the static pressure pile as P1 and P2 respectively;

[0050] Point the total station at the target point on the surface of the static pressure pile, start the distance measurement function, record the measurement results, use the built-in distance measurement function of the total station to directly measure the straight-line distance from the total station to the surface of the static pressure pile, and mark it as the slope distance; point the total station at the cylindrical target point, ensure the vertical alignment, and then read the angle value, use the built-in angle measurement function of the total station to directly measure the angle between the total station telescope line of sight and the plumb line, and define it as the zenith distance. When measuring the lower cross section, the corresponding slope distance is S, and the zenith distance is V. When measuring the lower cross section, the corresponding slope distance is S', and the zenith distance is V';

[0051] The three-dimensional coordinates of the known point A are marked as A (XA, YA, HA), including the abscissa XA, ordinate YA and elevation HA. Through the total station static pressure pile eccentricity measurement program, based on the measured slant distance S, zenith distance V and the coordinates of the known point A (XA, YA, HA), the center point coordinates of the circular contour line of the cross section on the static pressure pile are calculated according to the following formula, and marked as the center coordinates P0 (X0, Y0, Z0) of the cross section on the static pressure pile;

[0052] The projection distance of the tangent point on the surface of the static pressure pile relative to the total station in the local coordinate system with the total station as the origin and the plumb line as the axis is marked as S·sinV, and the projection distance of the tangent point on the surface of the static pressure pile relative to the total station in the horizontal direction, i.e. perpendicular to the axis, is marked as S·cosV.

[0053] The upper cross-sectional radius R is calculated by the cross-sectional radius formula (S·sinV≠R) sinθ=R, and the upper and lower cross-sectional radius R′ is calculated in the same way;

[0054] The upper section center coordinates P0 (X0, Y0, Z0) are calculated by the formula: X0 = XA + (S·sinV + R) cosαAP0; Y0 = YA + (S·sinV + R) sinαAP0; H0 = HA + S·cosV + i; and the lower section center coordinates P0′ (X0′, Y0′, Z0′) of the static pressure pile are calculated in the same way, where i is a correction parameter related to the instrument height, prism height and relative position of the measuring point. In addition to the instrument height and prism height, i may also include other height correction factors caused by the different relative positions of the measuring points on the static pressure pile. For example, if the measuring point is not on the same horizontal plane of the static pressure pile due to the uneven surface of the pile body, it is necessary to correct the height difference of the measuring point relative to a certain reference plane, and this correction value will also be included in i.

[0055] When calculating the coordinates of the center of the circle of the upper and lower cross sections of the static pressure pile, multiple parameters such as the slant distance, zenith distance, and coordinate azimuth related to the known points are comprehensively considered, and these parameters are carefully measured and calculated. For example, through the principle of the tangent method, the direction angle of the center point of the cylinder is calculated using the left and right tangent direction angles measured by the total station, and then the coordinates of the center of the circle are accurately obtained. This multi-parameter comprehensive calculation method improves the accuracy of the calculation of the center coordinates, thereby providing a more accurate data basis for subsequent verticality detection.

[0056] Step 4: According to the coordinates of the center of the upper and lower sections of the static pressure pile, calculate the horizontal offset between the upper and lower sections of the static pressure pile. The horizontal offset refers to the horizontal distance between the center of the upper cross section and the lower cross section of the static pressure pile body. The specific method is as follows:

[0057] The center coordinates of the upper and lower sections of the static pile are P0 (X0, Y0, Z0) and P0′ (X0′, Y0′, Z0′), respectively. The formula is: Calculate and obtain the horizontal offset P0P0′ between the upper and lower sections of the static pressure pile;

[0058] Among them, △X=(S·sinV+R)cosαAP0-(S′·sinV′+R′)cosαAP0′, △Y=(S·sinV+R)sinαAP0-(S′·sinV′+R′)sinαAP0′; αAP0 is the coordinate azimuth from the known point A on the cross section of the static pressure pile to the center P0, which represents the direction in the spatial rectangular coordinate system, and αAP0′ is the coordinate azimuth from the known point A to the center P′ of the lower cross section involved in the measurement of the lower cross section.

[0059] First, the coordinate azimuth αAB of the line L1 between the known points A and B is calculated based on the coordinate calculation formula of the known points A and B using the coordinate difference of the two points. Then, it is calculated using the formula αAP0=αAB-β1+θ=αAB-1 / 2(β1+β2).

[0060] Step 5: According to the horizontal offset between the upper and lower sections of the static pile and the center elevation of the upper and lower cross sections of the static pile, calculate the inclination rate between the upper and lower sections of the static pile. The specific method is as follows:

[0061] Through △H=|H0-H0 + |Calculate the elevation difference △H between the upper and lower sections of the static pressure pile, where H0 is the center elevation of the upper cross section, and H0+ is the center elevation of the lower cross section. By the formula, H0=HA+S·cosV+i; calculate the center elevation H0 of the upper cross section, and by the formula H0 + =HA+S'·cosV'+i; calculate the center elevation H0 of the lower cross section + ;

[0062] By formula, Calculate the inclination F between the upper and lower sections of the static pressure pile;

[0063] Step 6: Compare the calculated inclination rate F with the preset standard value Z. If F is less than or equal to the preset standard value Z, it means that the verticality of the static pressure pile is within the allowable range, and it is considered that the static pressure pile construction meets the verticality requirements; if F is greater than the preset standard value Z, it is considered that the verticality of the static pressure pile does not meet the requirements, and a tilt signal is generated to remind relevant staff to take corresponding measures.

[0064] It should be noted that the specific value of the preset standard value Z is set according to the requirements of the engineering specifications or standards for the verticality of the static pressure pile.

[0065] When using a total station for measurement, you only need to use the angle and distance measurement functions of the total station and follow certain measurement steps to quickly obtain the required data. Compared with some contact measurement methods that require complex installation and operation, it can complete the verticality detection of static pressure piles more quickly, avoiding the safety risks caused by manually climbing the pile body to install the measuring equipment. At the same time, the installation of the measuring equipment and the accuracy of the measurement results will not be affected by the unevenness of the pile surface or other factors.

[0066] Not only can the coordinates of the center of the upper and lower cross-sections of the static pile be calculated, but also the horizontal offset and inclination between the upper and lower sections can be further calculated. The two key parameters of horizontal offset and inclination can be used to comprehensively evaluate the verticality of the static pile. The horizontal offset reflects the degree of displacement of the pile body in the horizontal direction, while the inclination comprehensively considers the height difference of the pile body in the vertical direction and the displacement in the horizontal direction, which can more intuitively reflect the inclination of the pile body. This multi-parameter analysis method provides a more comprehensive and accurate evaluation result for the verticality detection of static piles, which helps to better judge whether the pile body meets the engineering requirements. By using a total station and precise geometric calculations, the verticality of static piles can be effectively measured and analyzed. This method improves the accuracy of measurement, reduces human errors, and enhances the reliability and repeatability of the results. In addition, possible problems in the construction of static piles can be discovered in a timely manner, providing safety guarantees for subsequent projects. Total station measurement not only improves measurement efficiency, but also solves the safety problems caused by manual climbing of piles to install measurement equipment.

[0067] Embodiment 2

[0068] As the second embodiment of the present invention, when the present application is implemented, compared with the first embodiment, the difference between the technical solution of the present embodiment and the first embodiment is that in the present embodiment, the inclination direction of the static pressure pile is determined according to the horizontal offset between the upper and lower cross-sections of the static pressure pile, which involves the offset of the center of the upper and lower cross-sections of the static pressure pile in the horizontal coordinate and the vertical coordinate in the calculation process of the horizontal offset between the upper and lower cross-sections of the static pressure pile, and the specific method is:

[0069] If the offset △X of the center of the upper and lower cross-sections of the static pile in the horizontal coordinate direction is a positive value, it means that the static pile has a tendency to deviate in the positive direction of the X axis, and if △X is a negative value, it means that the static pile has a tendency to deviate in the negative direction of the X axis; if the offset △Y of the center of the upper and lower cross-sections of the static pile in the vertical coordinate direction is a positive value, it means that the static pile has a tendency to deviate in the positive direction of the Y axis, and if △Y is a negative value, it means that the static pile has a tendency to deviate in the negative direction of the Y axis;

[0070] By the inclination direction of the static pressure pile, the position and angle of the pile driver can be adjusted in time during the construction process. For example, if it is found that the static pressure pile has a tendency to deviate in the positive direction of the X-axis, the construction personnel can fine-tune the pile driver in the negative direction of the X-axis accordingly, thereby effectively correcting the inclination of the pile body and ensuring that the final verticality of the static pressure pile meets the engineering requirements, improving the construction quality, and facilitating a more comprehensive understanding of the inclination state of the static pressure pile. According to the deviation trend of the static pressure pile, the construction parameters can be adjusted according to the deviation trend during the static pressure pile construction process, and corrective measures can be taken in time, such as adjusting the position and angle of the pile driver.

[0071] Embodiment 3

[0072] As the third embodiment of the present invention, when the present application is implemented, the technical solution of this embodiment is different from that of the first embodiment and the second embodiment only in that before measuring the eccentricity of the static pressure pile on the upper cross section and the lower cross section of the static pressure pile, a correction process is required, and the specific method of the correction process is:

[0073] First, the angle β1 between L3 and L1 and the angle β2 between L3 and L1 are obtained through the angle measurement function of the total station, and the direction angle θ of the center point of the static pressure pile is calculated through the angles β1 and β2. The specific calculation formula is: θ = 1 / 2 (β1-β2);

[0074] Then, according to the angle corresponding to the direction angle θ of the center point of the static pressure pile, the total station is rotated to aim at the center point of the static pressure pile, so that the deviation angle of the total station is zero, ensuring that the line of sight of the total station accurately points to the center point of the static pressure pile, thereby realizing the deviation correction of the total station.

[0075] Embodiment 4

[0076] As the fourth embodiment of the present invention, the solutions of the first embodiment, the second embodiment and the third embodiment are combined and implemented in the specific implementation of the present application.

[0077] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters and thresholds in the formula are set by technicians in this field according to actual conditions.

[0078] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for detecting the verticality of a static pile, characterized in that: The following steps are involved: Step 1: Set known points A and B, and set up the total station at known point A; Step 2: Establish a coordinate system based on the three-dimensional coordinates of known points A and B; Step 3: Measure the eccentricity of the upper cross section and the lower cross section of the static pressure pile, and analyze and obtain the center coordinates of the upper and lower cross sections of the static pressure pile; Step 4: According to the center coordinates of the upper and lower sections of the static pressure pile, analyze and obtain the horizontal offset between the upper and lower sections of the static pressure pile; Step 5: Calculate the inclination rate between the upper and lower sections of the static pressure pile according to the horizontal offset between the upper and lower sections and the center elevation of the upper and lower cross sections; Step 6: Compare the tilt rate with a preset standard value to determine whether a tilt signal is generated.

2. A static pile verticality detection method according to claim 1, characterized in that: The specific method of analyzing and obtaining the center coordinates of the upper and lower cross sections of the static pressure pile is: Draw the connecting line L1 between known points A and B, and the tangent lines L4 and L2 between known point A and the circular contour line of the cross section on the static pressure pile in the coordinate system; define the connecting line between the center point of the circular contour line of the cross section on the static pressure pile and the known point A as L3, and obtain the angle β1 between L3 and L1 and the angle β2 between L3 and L1; calculate the direction angle θ of the center point of the static pressure pile through the angles β and β2, and after correcting the total station according to the direction angle θ of the center point of the static pressure pile, measure the slant distance S and zenith distance V from the total station to the surface of the static pressure pile, and mark the three-dimensional coordinates of the known point A as A (XA, YA, HA), and calculate the center coordinates P0 (X0, Y0, Z0) of the cross section on the static pressure pile according to the coordinates, slant distance and zenith distance of the known point A, and calculate the center coordinates P0′ (X0′, Y0′, Z0′) of the cross section below the static pressure pile in the same way.

3. A static pile verticality detection method according to claim 2, characterized in that: Obtain the product of the sum of the projection distance S·sinV of the tangent point of the upper cross section in the axial direction relative to the total station and the radius R of the upper cross section multiplied by the cosine value of the coordinate azimuth αAP0 of the center of the cross section on the known point A, and then sum it with the abscissa HA of the known point A as the abscissa X0 of the center coordinate of the cross section on the static pressure pile; Obtain the sum of the projection distance S·sinV of the tangent point of the upper cross section in the axial direction relative to the total station and the radius R of the upper cross section, multiply it by the sine value of the coordinate azimuth αAP0 from the known point A to the center of the upper cross section, and then sum it with the ordinate YA of the known point A as the ordinate Y0 of the center coordinate of the upper cross section of the static pressure pile; The sum of the elevation HA of the known point A, the projection distance S·cosV from the total station to the tangent point of the lower cross section in the horizontal direction relative to the total station, and the correction parameter i is taken as the elevation H0 of the center coordinates of the cross section under the static pressure pile. The center coordinates of the cross section under the static pressure pile are calculated in the same way.

4. A static pile verticality detection method according to claim 3, characterized in that: The specific method to obtain the horizontal offset between the upper and lower sections of the static pressure pile is: The square root of the sum of the squares of the offsets of the center points of the upper and lower cross sections of the static pressure pile in the abscissa and ordinate directions is defined as the horizontal offset P0P0′ between the upper and lower cross sections of the static pressure pile.

5. A static pile verticality detection method according to claim 4, characterized in that: The specific method for obtaining the offset of the center of the upper and lower cross-sections of the static pressure pile in the horizontal coordinate direction is: First, multiply the sum of the projection distance S·sinV of the tangent point of the upper cross section in the axial direction relative to the total station and the radius R of the upper cross section by the cosine value of the coordinate azimuth αAP0 related to the known point A to the center of the upper cross section, and then subtract the product of the sum of the projection distance S′·sinV′ of the tangent point of the lower cross section in the axial direction relative to the total station and the radius R′ of the lower cross section and the cosine value of the coordinate azimuth αAP0′ related to the known point A to the center of the lower cross section, and then obtain the offset △X of the center of the upper and lower cross sections of the static pressure pile in the horizontal coordinate direction.

6. A static pile verticality detection method according to claim 5, characterized in that: The specific method for obtaining the offset of the center of the upper and lower cross-sections of the static pressure pile in the ordinate direction is: First, multiply the sum of the projection distance S·sinV of the tangent point of the upper cross section in the axial direction relative to the total station and the radius R of the upper cross section by the sine value of the coordinate azimuth αAP0 related to the known point A to the center of the upper cross section, and then subtract the product of the sum of S′·sinV′ of the tangent point of the lower cross section in the axial direction relative to the total station and the radius R′ of the lower cross section and the cosine value of the coordinate azimuth αAP0′ related to the center of the lower cross section, and then obtain the offset △Y of the center of the upper and lower cross sections of the static pressure pile in the ordinate direction.

7. A method for detecting verticality of static piles according to claim 4, characterized in that: The specific method for obtaining the inclination rate between the upper and lower sections of the static pressure pile is: The inclination rate is equal to the horizontal offset between the upper and lower sections of the static pressure pile divided by the elevation difference between the centers of the upper and lower cross-sections of the static pressure pile, where the elevation difference is equal to the absolute value of the difference between the elevations of the centers of the upper and lower cross-sections.

8. A method for detecting verticality of static piles according to claim 7, characterized in that: The specific method of determining the generation of the tilt signal is: The tilt rate is compared with a preset standard value. When the tilt rate is greater than the preset standard value, a tilt signal is generated, otherwise no processing is performed.

9. A static pile verticality detection method according to claim 6, characterized in that: The displacement trend of the static pile is determined according to the displacement of the center of the cross section in the horizontal and vertical directions. The specific method is as follows; If the offset △X of the center of the upper and lower cross-sections of the static pressure pile in the horizontal coordinate direction is a positive value, it means that the static pressure pile has a tendency to deviate in the positive direction of the X-axis, and if △X is a negative value, it means that the static pressure pile has a tendency to deviate in the negative direction of the X-axis; if the offset △Y of the center of the upper and lower cross-sections of the static pressure pile in the vertical coordinate direction is a positive value, it means that the static pressure pile has a tendency to deviate in the positive direction of the Y-axis, and if △Y is a negative value, it means that the static pressure pile has a tendency to deviate in the negative direction of the Y-axis.

10. A static pile verticality detection method according to claim 2, characterized in that: The specific method for calculating the direction angle of the center point of the static pressure pile is: Half of the difference between the angles β1 and β2 is taken as the direction angle θ of the center point of the static pressure pile. According to the angle corresponding to the direction angle θ of the center point of the static pressure pile, the total station is rotated to aim at the direction of the center point of the static pressure pile so that the deviation angle of the total station is zero, thereby realizing the deviation correction of the total station.

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