A method and system for measuring the settlement of M-type portal piers

Abstract

This application relates to a method and system for measuring the settlement of an M-type portal pier, belonging to the field of pier settlement observation technology. The method includes: during pier settlement back-measurement, measuring the settlement observation marker on one of the side columns of the target portal pier to obtain a first measurement result; based on the first measurement result, using the settlement observation markers on adjacent portal piers as connection points to transfer elevation, to measure the settlement observation markers on other columns of the target portal pier; after all target portal piers have been measured, adjusting the back-measurement and previous measurement results of all target portal piers to obtain the adjustment result; and determining the settlement of each target portal pier based on the adjustment result. This application utilizes settlement observation points of adjacent piers as connection points to transfer elevation, appropriately skipping individual points on the same pier for portal pier settlement observation, thereby reducing the number of stations and transfer points, improving the accuracy of pier settlement observation, shortening observation time significantly, reducing personnel input, and improving measurement efficiency.

Description

Technical Field

[0001] This application relates to the field of pier settlement observation technology, and in particular to a method and system for measuring the settlement of an M-type portal pier. Background Technology

[0002] With the rapid development of the national economy, bridge construction technology is also advancing rapidly, and the M-type portal pier, suitable for both road and rail use, has gained widespread popularity. However, when conducting settlement monitoring on an M-type portal pier, the presence of three pier columns necessitates the installation of settlement monitoring markers on each column. The markers on the two outer pier columns are located on the outer side of the pier body, while the marker on the middle pier is located on the side of the pier at a lower mileage. This results in a lack of visual communication between the three monitoring markers on a single M-type portal pier. Consequently, using traditional second-order leveling, these markers cannot be observed from a single station but require continuous observation at different points, leading to excessively long monitoring times and reduced data accuracy with the increasing number of stations. Given the tight schedule, short observation period, and massive workload, finding a convenient, simple, and accurate monitoring method becomes essential.

[0003] Therefore, how to effectively improve the measurement efficiency of settlement observation and ensure measurement accuracy has become an urgent problem to be solved. Summary of the Invention

[0004] This application provides a method and system for measuring the settlement of an M-type portal pier, in order to solve the problems of low measurement efficiency and poor measurement accuracy caused by the need for continuous point-to-point observation during settlement monitoring in related technologies.

[0005] Firstly, a method for measuring the settlement of an M-type portal pier is provided, including the following steps:

[0006] When conducting the settlement back-measurement of the pier body, the settlement observation mark on one of the side pier columns of the target portal pier is measured to obtain the first measurement result;

[0007] Based on the first measurement result, and using the settlement observation marks on the adjacent portal piers as connection points to transfer the elevation, the settlement observation marks on other piers in the target portal pier are measured;

[0008] After all target portal piers have been measured, the back-measurement results and the forward measurement results of all target portal piers are adjusted to obtain the adjustment results.

[0009] The settlement of each target portal pier is determined based on the adjustment results.

[0010] In some embodiments, the step of measuring settlement observation points on other piers in the target portal pier based on the first measurement result and using settlement observation points on adjacent portal piers as connection points to transfer elevation includes:

[0011] Settlement observation markers on the side piers of adjacent portal piers that are located on the same side as one of the side piers of the target portal pier are measured to obtain the second measurement result;

[0012] Based on the first and second measurement results, the measured elevation of the side pier column of the adjacent portal pier that is located on the same side as one of the side pier columns of the target portal pier is obtained.

[0013] Based on the measured elevation, the settlement observation markers on other piers in the target portal pier were measured.

[0014] In some embodiments, prior to the step of performing settlement retesting of the pier, the method further includes:

[0015] During the settlement measurement of the pier, leveling measurements were performed based on only two control points in the monitoring and control network to obtain the measurement results.

[0016] In some embodiments, determining the settlement of each target portal pier based on the adjustment results includes:

[0017] Determine whether the adjustment result is less than or equal to the specified limit;

[0018] If so, the measured elevation obtained during the back-measurement process will be used as the actual elevation of the pier column in the target portal pier;

[0019] If not, then repeat the steps for measuring the settlement of the pier.

[0020] Secondly, an M-type portal pier settlement measurement system is provided, including:

[0021] The first measurement module is used to measure the settlement observation mark on one of the side columns of the target portal pier when performing settlement back measurement of the pier body, and obtain the first measurement result;

[0022] The second measurement module is used to measure the settlement observation points on other piers in the target portal pier based on the first measurement result and by using the settlement observation points on adjacent portal piers as connection points to transfer the elevation.

[0023] The calculation module is used to adjust the back-measurement results and past-measurement results of all target portal piers after all target portal piers have been measured, and to obtain the adjustment results; based on the adjustment results, the settlement of each target portal pier is determined.

[0024] In some embodiments, the second measurement module is specifically used for:

[0025] Settlement observation markers on the side piers of adjacent portal piers that are located on the same side as one of the side piers of the target portal pier are measured to obtain the second measurement result;

[0026] Based on the first and second measurement results, the measured elevation of the side pier column of the adjacent portal pier that is located on the same side as one of the side pier columns of the target portal pier is obtained.

[0027] Based on the measured elevation, the settlement observation markers on other piers in the target portal pier were measured.

[0028] In some embodiments, the system further includes a third measurement module, which is used for:

[0029] During the settlement measurement of the pier, leveling measurements were performed based on only two control points in the monitoring and control network to obtain the measurement results.

[0030] In some embodiments, the computing module is specifically used for:

[0031] Determine whether the adjustment result is less than or equal to the specified limit;

[0032] If so, the measured elevation obtained during the back-measurement process will be used as the actual elevation of the pier column in the target portal pier;

[0033] If not, then repeat the steps for measuring the settlement of the pier.

[0034] The beneficial effects of the technical solution provided in this application include: effectively improving the measurement efficiency and accuracy of settlement observation targets.

[0035] This application provides a method and system for measuring the settlement of an M-type portal pier, including measuring the settlement observation marker on one of the side columns of the target portal pier during the back-measurement of the pier body settlement, obtaining a first measurement result; based on the first measurement result, using the settlement observation markers on adjacent portal piers as connection points to transfer elevation, so as to measure the settlement observation markers on other columns of the target portal pier; after all target portal piers have been measured, adjusting the back-measurement results and previous measurement results of all target portal piers to obtain the adjustment result; and determining the settlement of each target portal pier based on the adjustment result. This application proposes a new method for monitoring the settlement of portal piers. Instead of measuring three points on the same pier before moving on to the next pier, the method utilizes settlement observation points on nearby piers as connections for elevation transfer. This allows for skipping individual points on the same pier, thus reducing the number of stations and point transfers. This not only avoids systematic errors caused by point transfers and improves the accuracy of pier settlement monitoring, but also significantly reduces observation time and personnel input, thereby increasing measurement efficiency and lowering measurement costs. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A flowchart illustrating a settlement measurement method for an M-type portal pier provided in this application embodiment;

[0038] Figure 2 A schematic diagram of the track for monitoring pier settlement using existing technology;

[0039] Figure 3 This is a front view of the location of the pier settlement observation points provided in the embodiments of this application;

[0040] Figure 4 A top view showing the location of the pier settlement observation points provided in this embodiment of the application;

[0041] Figure 5 This is a schematic diagram of the track plan for the settlement observation jump point of the M-type portal pier provided in the embodiments of this application. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] This application provides a method and system for measuring the settlement of an M-type portal pier, which can solve the problems of low measurement efficiency and poor measurement accuracy caused by the need for continuous point-to-point observation during settlement monitoring in related technologies.

[0044] Figure 1 This application provides a method for measuring the settlement of an M-type portal pier, comprising the following steps:

[0045] Step S10: When performing the settlement back measurement of the pier body, measure the settlement observation mark on one of the side pier columns of the target portal pier to obtain the first measurement result;

[0046] As an example, it should be understood that the M-type portal pier has three columns, each with a settlement observation point. The settlement observation points for the two outer columns (i.e., the two side columns) are embedded on the outer side of the pier, while the settlement observation point for the middle column is embedded on the side of the pier at a lower mileage. See also Figure 2 As shown, in the prior art, when conducting settlement observation of a portal pier at the station location, since the three settlement observation marks of a portal pier are not visible to each other, it is not possible to observe two settlement observation marks at the same station during leveling observation. This necessitates the corresponding point transfer during the measurement process, resulting in too many point transfers, which leads to low efficiency and a decrease in accuracy.

[0047] In this embodiment, while meeting the tolerance limits for each station in the national second-order leveling measurement specifications, the leveling elevation is transferred using the settlement observation markers on the central pier, thus eliminating the need for relocation points, improving measurement efficiency, and significantly reducing the impact of relocation points on measurement accuracy. Specifically, firstly, an independent monitoring and control network for settlement observation is established, and the corresponding leveling route (i.e., the pier settlement observation route) is edited and updated in the settlement observation section of the railway engineering management platform; secondly, see... Figure 3 and Figure 4 Select appropriate working benchmarks and sequentially set up corresponding pier settlement observation points (such as settlement observation marker 1, settlement observation marker 2, and settlement observation marker 3) within the line. The settlement observation point numbers must correspond to the actual pier numbers and mileages. Then confirm and save the data. Each pier settlement observation point needs to be edited sequentially according to the measured order.

[0048] Download the edited pier settlement observation route, benchmark points, and working benchmark information to the information management platform (such as a mobile terminal like a smartphone), and check the accuracy of the point locations, elevations, and other data before conducting on-site settlement observations. During on-site observations, it is preferable to use Bluetooth to connect the software on the mobile terminal to the measuring instrument, allowing the instrument data to be transmitted to the mobile terminal's software in real time.

[0049] It is understandable that in this embodiment, when conducting on-site settlement back-testing, the settlement observation mark on one of the side piers of the target portal pier is first measured to obtain the first measurement result. It should be noted that the first measurement result includes the height difference between the side pier and the control point in the target portal pier, so that the measured elevation of the side pier can be determined based on the height difference and the elevation of the control point.

[0050] Furthermore, prior to the step of conducting the pier settlement retest, the following steps are also included:

[0051] During the settlement measurement of the pier, leveling measurements were performed based on only two control points in the monitoring and control network to obtain the measurement results.

[0052] As an example, in this embodiment, during the forward measurement process, settlement observation targets will not be used. Instead, leveling measurements will be performed directly between two control points in the monitoring and control network (it should be noted that these control points can be benchmark points, working benchmark points, or a combination of benchmark and working benchmark points; the specific setting of the control points can be determined according to actual needs and is not limited here). This reduces the number of point changes and improves measurement efficiency. Therefore, when editing the pier settlement observation route, settlement observation targets will not be included in the forward measurement, so that settlement measurements are performed solely based on the two control points in the monitoring and control network during the forward measurement process.

[0053] Step S20: Based on the first measurement result, and using the settlement observation markers on adjacent portal piers as connection points to transfer the elevation, the settlement observation markers on other piers in the target portal pier are measured;

[0054] Specifically, the step of measuring the settlement observation points on other piers in the target portal pier by using the first measurement result as a connection point to transfer the elevation includes:

[0055] Settlement observation markers on the side piers of adjacent portal piers that are located on the same side as one of the side piers of the target portal pier are measured to obtain the second measurement result;

[0056] Based on the first and second measurement results, the measured elevation of the side pier column of the adjacent portal pier that is located on the same side as one of the side pier columns of the target portal pier is obtained.

[0057] Based on the measured elevation, the settlement observation markers on other piers in the target portal pier were measured.

[0058] As an example, in this embodiment, instead of measuring the three settlement observation points of the same pier before measuring the next pier, the settlement observation points of the piers close to it are used as connections to transfer the elevation, so as to appropriately skip individual points of the same pier, that is, to conduct portal pier settlement observation by skipping points.

[0059] For example, see Figure 5As shown, during the retest, the first station first observes the settlement observation marker on one side of the rear pier (i.e., rear pier 1), and then observes the settlement observation marker on the middle pier 1 on the same side as rear pier 1. This is to obtain the first elevation difference between the settlement observation markers on rear pier 1 and middle pier 1. Based on this first elevation difference and the known measured elevation corresponding to the settlement observation marker on rear pier 1, the measured elevation of the settlement observation marker on middle pier 1 is calculated, thus achieving a connection between the settlement observation markers on rear pier 1 and middle pier 1. The elevation transfer between settlement observation markers is achieved by: 1) observing the settlement observation markers on the rear pier 2 and the middle pier 1 at the second station to obtain the second elevation difference between the settlement observation markers on the middle pier 1 and the rear pier 2; and 2) calculating the measured elevation of the settlement observation markers on the rear pier 2 based on the second elevation difference and the measured elevation of the settlement observation markers on the middle pier 1, thus realizing the elevation transfer between the settlement observation markers on the middle pier 1 and the rear pier 2.

[0060] Next, at the third station, the settlement observation markers on the side pier (i.e., middle pier 3) and the rear pier 2 were observed, thus achieving the elevation transfer between the settlement observation markers on the rear pier 2 and the middle pier 3. At the fourth station, the settlement observation markers on the side pier (i.e., rear pier 3) on the same side as the middle pier 3 and the middle pier 3 were observed, thus achieving the elevation transfer between the settlement observation markers on the middle pier 3 and the rear pier 3. Then, at the fifth station, the settlement observation markers on the front pier 3 on the same side as the rear pier 3 and the rear pier 3 were observed, one pier away from the rear pier, thus achieving the elevation transfer between the settlement observation markers on the rear pier 3 and the front pier 3.

[0061] Next, at the sixth station, the settlement observation markers on the middle pier column 2 and the front pier column 3 of the middle pier were observed. Similarly, the elevation transfer between the settlement observation markers on the front pier column 3 and the middle pier column 2 was achieved. At the seventh station, the measurement was moved to the settlement observation markers on the other side pier column (i.e., the front pier column 1) and the middle pier column 2 of the front pier. Similarly, the elevation transfer between the settlement observation markers on the middle pier column 2 and the front pier column 1 was achieved. This process was continued until the measurement work of all settlement observation points in the line was completed, and the back measurement results were obtained, that is, the measured elevation of each pier column.

[0062] Therefore, this embodiment skips some points of the pier or crosses some points of a pier when conducting settlement observations on a certain pier based on the distribution of settlement observation points below, and then conducts observations on these points at appropriate times, so as to achieve a simple and quick effect, while improving accuracy and reducing the error rate.

[0063] Step S30: After all target portal piers have been measured, adjust the back measurement results and the forward measurement results of all target portal piers to obtain the adjustment results;

[0064] As an example, in this embodiment, after all the settlement observation points of the piers have been measured and the data has been returned to the control points, that is, after the settlement observation of the piers in this cycle of the line has been completed on site, the software will be used to perform adjustment calculations on the measured elevations of all the piers obtained from the past and back measurements to obtain the adjustment results.

[0065] Step S40: Determine the settlement of each target portal pier based on the adjustment results.

[0066] Specifically, determining the settlement of each target portal pier based on the adjustment results includes:

[0067] Determine whether the adjustment result is less than or equal to the specified limit;

[0068] If so, the measured elevation obtained during the back-measurement process will be used as the actual elevation of the pier column in the target portal pier;

[0069] If not, then repeat the steps for measuring the settlement of the pier.

[0070] As an example, in this embodiment, the validity of the settlement observation result is determined by calculating the relationship between the adjustment result and the specified limit (it should be noted that this limit will be determined through the observation results of the leveling route). Specifically, if the adjustment result is less than or equal to the limit, the adjustment result is considered valid, meaning the settlement observation result is valid. Therefore, the measured elevation calculated during the back-measurement process can be used as the actual elevation of the pier, and the relevant data can be uploaded to the information platform and the corresponding report can be downloaded, thus completing the task of this pier settlement observation. However, if the adjustment result is greater than the limit, the adjustment result is considered invalid, meaning the settlement observation result is invalid. In this case, the settlement observation result needs to be invalidated, and the pier settlement observation needs to be repeated.

[0071] Furthermore, it should be understood that before conducting forward settlement measurements of the piers, an independent monitoring and control network will be constructed based on preset control points (including benchmark points and / or working benchmark points) for joint measurements. When the accuracy meets the national second-order leveling standard, the data will be entered into the information management platform. For example, the standard elevation corresponding to each control point is determined through observation to evaluate whether the measured elevations obtained from subsequent forward and backward measurements are qualified. That is, if the difference between the measured elevation and the standard elevation of the first or last control point in the leveling line is within a certain allowable range, it means that the measured elevation of the piers in the leveling line based on that control point is qualified; if the difference between the measured elevation and the standard elevation is outside the allowable range, it means that the measured elevation of the piers in the leveling line based on that control point is unqualified, and the pier settlement observation needs to be started from the beginning.

[0072] Therefore, this embodiment does not select to measure three points on the same pier before measuring the next pier when observing the settlement of the portal pier. Instead, it uses the settlement observation points of the piers close to it as a connection to transfer the elevation, so as to appropriately skip some points on the same pier. That is, the portal pier settlement observation is carried out by skipping points. The core principle of this embodiment for portal pier settlement observation is to use the settlement observation mark of the middle pier column to transfer the leveling elevation on the basis of meeting the limit of error of each station in the national second-order leveling measurement specification, thereby eliminating the need for turning points and greatly reducing the impact of turning points on the measurement accuracy.

[0073] In summary, this embodiment significantly reduces the number of monitoring stations and relocation points, avoiding systematic errors caused by relocation, effectively improving the data accuracy of the pier settlement observation targets, and saving a considerable amount of observation time. This means that more pier settlement observation tasks can be completed in a relatively short time, and the personnel input per unit time is reduced, eliminating the labor costs of two teams observing simultaneously. This effectively improves measurement efficiency and reduces measurement costs, offering the advantages of convenience, speed, and accuracy. Furthermore, since the distance between the piers is fixed, the instrument position can be fixed during subsequent measurements, facilitating multiple observations over a long period.

[0074] This application also provides an M-type portal pier settlement measurement system, including:

[0075] The first measurement module is used to measure the settlement observation mark on one of the side columns of the target portal pier when performing settlement back measurement of the pier body, and obtain the first measurement result;

[0076] The second measurement module is used to measure the settlement observation points on other piers in the target portal pier based on the first measurement result and by using the settlement observation points on adjacent portal piers as connection points to transfer the elevation.

[0077] The calculation module is used to adjust the back-measurement results and past-measurement results of all target portal piers after all target portal piers have been measured, and to obtain the adjustment results; based on the adjustment results, the settlement of each target portal pier is determined.

[0078] Furthermore, the second measurement module is specifically used for:

[0079] Settlement observation markers on the side piers of adjacent portal piers that are located on the same side as one of the side piers of the target portal pier are measured to obtain the second measurement result;

[0080] Based on the first and second measurement results, the measured elevation of the side pier column of the adjacent portal pier that is located on the same side as one of the side pier columns of the target portal pier is obtained.

[0081] Based on the measured elevation, the settlement observation markers on other piers in the target portal pier were measured.

[0082] Furthermore, the system also includes a third measurement module, which is used for:

[0083] During the settlement measurement of the pier, leveling measurements were performed based on only two control points in the monitoring and control network to obtain the measurement results.

[0084] Furthermore, the calculation module is specifically used for:

[0085] Determine whether the adjustment result is less than or equal to the specified limit;

[0086] If so, the measured elevation obtained during the back-measurement process will be used as the actual elevation of the pier column in the target portal pier;

[0087] If not, then repeat the steps for measuring the settlement of the pier.

[0088] It should be noted that those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and each module described above can be referred to the corresponding process in the aforementioned embodiment of the M-type portal pier settlement measurement method, and will not be repeated here.

[0089] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0090] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0091] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for measuring the settlement of an M-type portal pier, characterized in that, Includes the following steps: When conducting the settlement back-measurement of the pier body, the settlement observation mark on one of the side pier columns of the target portal pier is measured to obtain the first measurement result; Based on the first measurement result, and using the settlement observation marks on the adjacent portal piers as connection points to transfer the elevation, the settlement observation marks on other piers in the target portal pier are measured; After all target portal piers have been measured, the back-measurement results and the forward measurement results of all target portal piers are adjusted to obtain the adjustment results. The settlement of each target portal pier is determined based on the adjustment results; The step of measuring the settlement observation points on other piers in the target portal pier by using the first measurement result as a connection point to transfer the elevation includes: Settlement observation markers on the side piers of adjacent portal piers that are located on the same side as one of the side piers of the target portal pier are measured to obtain the second measurement result; Based on the first and second measurement results, the measured elevation of the side pier column of the adjacent portal pier that is located on the same side as one of the side pier columns of the target portal pier is obtained. Based on the measured elevation, the settlement observation markers on other piers in the target portal pier were measured.

2. The settlement measurement method for M-type portal piers as described in claim 1, characterized in that, Before the step of conducting the pier settlement retest, the following is also included: During the settlement measurement of the pier, leveling measurements were performed based on only two control points in the monitoring and control network to obtain the measurement results.

3. The settlement measurement method for M-type portal piers as described in claim 2, characterized in that, The determination of the settlement of each target portal pier based on the adjustment results includes: Determine whether the adjustment result is less than or equal to the specified limit; If so, the measured elevation obtained during the back-measurement process will be used as the actual elevation of the pier column in the target portal pier; If not, then repeat the steps for measuring the settlement of the pier.

4. A settlement measurement system for an M-type portal pier, characterized in that, include: The first measurement module is used to measure the settlement observation mark on one of the side columns of the target portal pier when performing settlement back measurement of the pier body, and obtain the first measurement result; The second measurement module is used to measure the settlement observation points on other piers in the target portal pier based on the first measurement result and by using the settlement observation points on adjacent portal piers as connection points to transfer the elevation. The calculation module is used to adjust the back-measurement results and past-measurement results of all target portal piers after all target portal piers have been measured, and to obtain the adjustment results; based on the adjustment results, the settlement of each target portal pier is determined. Specifically, the second measurement module is used for: Settlement observation markers on the side piers of adjacent portal piers that are located on the same side as one of the side piers of the target portal pier are measured to obtain the second measurement result; Based on the first and second measurement results, the measured elevation of the side pier column of the adjacent portal pier that is located on the same side as one of the side pier columns of the target portal pier is obtained. Based on the measured elevation, the settlement observation markers on other piers in the target portal pier were measured.

5. The M-type portal pier settlement measurement system as described in claim 4, characterized in that, The system also includes a third measurement module, which is used for: During the settlement measurement of the pier, leveling measurements were performed based on only two control points in the monitoring and control network to obtain the measurement results.

6. The M-type portal pier settlement measurement system as described in claim 5, characterized in that, The calculation module is specifically used for: Determine whether the adjustment result is less than or equal to the specified limit; If so, the measured elevation obtained during the back-measurement process will be used as the actual elevation of the pier column in the target portal pier; If not, then repeat the steps for measuring the settlement of the pier.

Images