System and method for monitoring and analyzing reference point stability

Abstract

The invention relates to the technical field of datum point detection, and discloses a datum point stability monitoring and analyzing system and method, and the system comprises the following modules: a data collection module which is responsible for collecting observation data of each datum point and a working base point in real time through total station automation equipment, and the observation data comprise a horizontal angle H, a vertical angle V and a slope distance D; and the total station is erected on the working base point and performs periodic or continuous automatic monitoring on each reference point. According to the reference point stability monitoring and analyzing system and method, it can be ensured that deformation monitoring result data in each period are reliable, the reference point is continuously observed, and the change condition of the reference point is monitored.

Description

Technical Field

[0001] The present invention relates to the technical field of benchmark point detection, and in particular to a benchmark point stability monitoring and analysis system and method. Background Art

[0002] In pile foundation construction, benchmarks are very important, as they are the basis for measurement and positioning. Benchmarks are the basis and reference for deformation monitoring. The most basic requirement for benchmarks is that they should remain stable and reliable throughout the deformation monitoring process, so that we can accurately measure and analyze the deformation of other points relative to the benchmark, thereby completing the continuous monitoring of the deformation of the deformed body.

[0003] Due to changes in the natural environment and the influence of human factors, it is inevitable that some points may change. The displacement of the pile foundation reference point mainly occurs during the pile sinking process and is mainly caused by the following problems:

[0004] Large number of piles: When there are many piles, the soil layer is saturated and dense, and the distance between piles is small. When the piles are sunk, the soil is squeezed to the limit density and bulges upward, causing the adjacent piles to be lifted up together.

[0005] Soil conditions: When constructing on soft soil, the void pressure caused by pile sinking pushes the adjacent piles to one side or causes them to surge.

[0006] Construction errors: inaccurate pile position layout, large deviation, pile position markings lost or squeezed during construction, arbitrary positioning by construction workers, confusion between pile position markings and wall and column axis markings, etc., resulting in large pile position misalignment.

[0007] Improper construction methods: The selected driving route is unreasonable, and the earth excavation method and sequence are incorrect.

[0008] To this end, the present invention provides a benchmark stability monitoring and analysis system and method. Summary of the invention

[0009] In view of the above-mentioned deficiencies in the prior art, the present invention provides a benchmark stability monitoring and analysis system and method to ensure that the deformation monitoring results data of each period are reliable, continuously observe the benchmark points, and monitor the changes of the benchmark points.

[0010] The present invention provides the following technical solution: a benchmark stability monitoring and analysis system, comprising the following modules:

[0011] Data acquisition module: This module is responsible for collecting the observation data of each benchmark and working base point in real time through the total station automation equipment, including the horizontal angle H, vertical angle V and slope distance D;

[0012] The total station is set up at the working base point to conduct periodic or continuous automatic monitoring of each benchmark point;

[0013] Data processing module: Receives the original observation data from the data acquisition module, calculates the precise coordinates (x′, y′, z′) of the working base point using the least squares adjustment method, and reversely calculates the coordinates (x i ,y i ,z i );

[0014] This module can store and manage the initial coordinates of all benchmarks and the observation data of each measurement;

[0015] Stability judgment module: Use the current plane distance d between any two reference points to calculate i , and compare the current plane distance d i The absolute value ti of the difference from the initial plane distance d0 is determined according to the nominal accuracy E of the total station. i Whether it is qualified, so as to judge the stability of the benchmark, mark the unqualified ti value, and quickly identify the unstable benchmark;

[0016] Result output module: outputs the results of the stability judgment module in a graphical interface or other forms, displays the specific position of the unstable reference point, ti value, and the relative position relationship with other reference points, and provides data export function to facilitate subsequent data analysis and processing.

[0017] A benchmark stability monitoring and analysis method, the specific operations are as follows:

[0018] S1. First, the initial coordinates of all benchmark points are known. The total station is set up on the working base point. During each cycle of automated monitoring, the total station is controlled to observe. After obtaining the observation data of the benchmark point, the coordinates of the working base point (x′, y′, z′) are calculated by least squares adjustment. The total station observes the horizontal angle H, vertical angle V and slope distance D of the target point, and the coordinates of the target benchmark point (x ′, y ′, z ′) are calculated by the following formula. i ,y i ,z i );

[0019] x i =x′+D i ·sin(V i )·cos(H i );

[0020] y i =y′+D i ·sin(V i )·cos(H i );

[0021] z i =z′+D i ·cos(V i );

[0022] S2, according to the formula: Calculate the initial plane distance d0 between any two reference points, where (x0, y0) and (x′0, y′0) are the initial horizontal and vertical coordinates of any two reference points, respectively. After calculating the coordinates of all reference points, substitute the coordinates of any two reference points into the formula to calculate the plane distance d between the two reference points. i ;

[0023] S3. Calculate the plane distance d between any two reference points i The absolute value t of the difference between the initial plane distance d0 of these two reference points i ; Through the formula: t i =|d i -d i0 |, calculate all t i value, and the nominal accuracy of the total station is E = (Amm + Bppm × Dkm) mm, A represents the fixed error (error constant) of the total station, B represents the proportional error coefficient, ppm represents one millionth, and D represents the actual measurement distance of the total station. If t i is less than the value E of the total station accuracy, then t i is a qualified value. If it is greater than the value E of the total station accuracy, then t i is an unqualified value.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The benchmark point stability monitoring and analysis system and method can ensure the reliability of deformation monitoring results data in each period, continuously observe the benchmark points, and monitor the changes of the benchmark points. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the system flow of the present invention;

[0027] Figure 2 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of known functions and known components to avoid unnecessary confusion of the concepts of the present invention.

[0029] See also Figure 1 , a benchmark stability monitoring and analysis system, including the following modules:

[0030] Data acquisition module: This module is responsible for collecting the observation data of each benchmark and working base point in real time through the total station automation equipment, including the horizontal angle H, vertical angle V and slope distance D;

[0031] The total station is set up at the working base point to conduct periodic or continuous automatic monitoring of each benchmark point;

[0032] Data processing module: Receives the original observation data from the data acquisition module, calculates the precise coordinates (x′, y′, z′) of the working base point using the least squares adjustment method, and reversely calculates the coordinates (x i ,y i ,z i );

[0033] This module can store and manage the initial coordinates of all benchmarks and the observation data of each measurement;

[0034] Stability judgment module: Use the current plane distance d between any two reference points to calculate i , and compare the current plane distance d i The absolute value ti of the difference from the initial plane distance d0 is determined according to the nominal accuracy E of the total station. i Whether it is qualified, so as to judge the stability of the benchmark, mark the unqualified ti value, and quickly identify the unstable benchmark;

[0035] Result output module: outputs the results of the stability judgment module in a graphical interface or other forms, displays the specific position of the unstable reference point, ti value, and the relative position relationship with other reference points, and provides data export function to facilitate subsequent data analysis and processing.

[0036] See also Figure 2 , a benchmark stability monitoring and analysis method, the specific operations are as follows:

[0037] S1. First, the initial coordinates of all benchmark points are known. The total station is set up on the working base point. During each cycle of automated monitoring, the total station is controlled to observe. After obtaining the observation data of the benchmark point, the coordinates of the working base point (x′, y′, z′) are calculated by least squares adjustment. The total station observes the horizontal angle H, vertical angle V and slope distance D of the target point, and the coordinates of the target benchmark point (x ′, y ′, z ′) are calculated by the following formula. i ,y i ,z i );

[0038] x i =x′+D i·sin(V i )·cos(H i );

[0039] y i =y′+D i ·sin(V i )·cos(H i );

[0040] z i =z′+D i ·cos(V i );

[0041] S2, according to the formula: Calculate the initial plane distance d0 between any two reference points, where (x0, y0) and (x′0, y′0) are the initial horizontal and vertical coordinates of any two reference points, respectively. After calculating the coordinates of all reference points, substitute the coordinates of any two reference points into the formula to calculate the plane distance d between the two reference points. i ;

[0042] S3. Calculate the plane distance d between any two reference points i The absolute value t of the difference between the initial plane distance d0 of these two reference points i ; Through the formula: t i =|d i -d i0 |, calculate all t i value, and the nominal accuracy of the total station is E = (Amm + Bppm × Dkm) mm, A represents the fixed error (error constant) of the total station, B represents the proportional error coefficient, ppm represents one millionth, and D represents the actual measurement distance of the total station. If t i is less than the value E of the total station accuracy, then t i is a qualified value. If it is greater than the value E of the total station accuracy, then t i is an unqualified value.

[0043] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A reference point stability monitoring and analysis system, characterized in that: Includes the following modules: Data acquisition module: This module is responsible for collecting the observation data of each benchmark and working base point in real time through the total station automation equipment, including the horizontal angle H, vertical angle V and slope distance D; The total station is set up at the working base point to conduct periodic or continuous automatic monitoring of each benchmark point; Data processing module: Receives the original observation data from the data acquisition module, calculates the precise coordinates (x′, y′, z′) of the working base point using the least squares adjustment method, and reversely calculates the coordinates (x i ,y i ,z i ); This module can store and manage the initial coordinates of all benchmarks and the observation data of each measurement; Stability judgment module: Use the current plane distance d between any two reference points to calculate i , and compare the current plane distance d i The absolute value ti of the difference from the initial plane distance d0 is determined according to the nominal accuracy E of the total station. i Whether it is qualified, so as to judge the stability of the benchmark, mark the unqualified ti value, and quickly identify the unstable benchmark; Result output module: outputs the results of the stability judgment module in a graphical interface or other forms, displays the specific position of the unstable reference point, ti value, and the relative position relationship with other reference points, and provides data export function to facilitate subsequent data analysis and processing.

2. A reference point stability monitoring and analysis method, characterized in that: The reference point stability monitoring and analysis system described in claim 1 is used, and the specific operations are as follows: S1. First, the initial coordinates of all benchmark points are known. The total station is set up on the working base point. During each cycle of automated monitoring, the total station is controlled to observe. After obtaining the observation data of the benchmark point, the coordinates of the working base point (x′, y′, z′) are calculated by least squares adjustment. The total station observes the horizontal angle H, vertical angle V and slope distance D of the target point, and the coordinates of the target benchmark point (x ′, y ′, z ′) are calculated by the following formula. i ,y i ,z i ); x i =x′+D i ·sin(V i )·cos(H i ); and i =y′+D i ·sin(V i )·cos(H i ); z i =z′+D i ·cos(V i ); S2, according to the formula: Calculate the initial plane distance d0 between any two reference points, where (x0, y0) and (x′0, y′0) are the initial horizontal and vertical coordinates of any two reference points, respectively. After calculating the coordinates of all reference points, substitute the coordinates of any two reference points into the formula to calculate the plane distance d between the two reference points. i ; S3. Calculate the plane distance d between any two reference points i The absolute value t of the difference between the initial plane distance d0 of these two reference points i ; Through the formula: t i =|d i -d i0 |, calculate all t i value, and the nominal accuracy of the total station is E = (Amm + Bppm × Dkm) mm, A represents the fixed error (error constant) of the total station, B represents the proportional error coefficient, ppm represents one millionth, and D represents the actual measurement distance of the total station. If t i is less than the value E of the total station accuracy, then t i is a qualified value. If it is greater than the value E of the total station accuracy, then t i is an unqualified value.

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