Bridge settlement monitoring device and method

Abstract

The invention discloses a bridge settlement monitoring device and method.The bridge settlement monitoring device comprises a sensing unit and a settlement monitoring unit, and the sensing unit is used for obtaining bridge settlement parameters; the monitoring device further comprises a remote monitoring unit, and the monitoring unit is used for obtaining a risk level matching result and outputting the risk level matching result to a specified display window. According to the invention, risk assessment is carried out according to the settlement parameters of the bridge, quantitative grading and real-time early warning of the settlement risk of the bridge are realized, and data support is provided for maintenance decision.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge safety detection, and particularly to a bridge settlement monitoring device and method. Background Art

[0002] As a core component of transportation infrastructure, bridges are subject to multiple loads such as vehicle dynamic loads, environmental changes, and geological activities for a long time, which are likely to cause vertical settlement of the foundation or substructure and structural deformation, resulting in problems such as deviation of the bridge deck elevation, inclination of the bridge pier, and overall instability.

[0003] In the prior art, sensor and data transmission technologies have been widely applied to bridge settlement monitoring. For example, static level gauges or displacement sensors are arranged to collect settlement data in real time, and abnormal signals are analyzed through a remote monitoring center. However, such systems can only provide intuitive data on the basic settlement amount or deformation trend, lacking the ability to quantitatively evaluate the settlement risk. Summary of the Invention

[0004] Therefore, to address the above deficiencies, the present invention provides a bridge settlement monitoring device and method herein to perform risk assessment based on the settlement parameters of the bridge, realize quantitative grading and real-time warning of the bridge settlement risk, and provide data support for maintenance decision-making.

[0005] On the one hand, the present invention provides a bridge settlement monitoring device herein, which includes a sensing unit and a settlement monitoring unit. The sensing unit is used to obtain bridge settlement parameters. The settlement monitoring unit includes: A data receiving module, which is used to receive bridge settlement parameters. The bridge settlement parameters include the liquid level difference, horizontal displacement amount, pressure difference, and creep camber amount of each measuring point. A settlement accumulation calculation module, which is used to perform cumulative settlement calculation based on the liquid level difference to obtain a cumulative settlement calculation result. A settlement rate calculation module, which is used to perform settlement rate calculation based on the cumulative settlement calculation result to obtain a settlement rate calculation result. A settlement difference calculation module, which is used to perform differential settlement calculation based on the liquid level difference to obtain a differential settlement calculation result. A pressure difference calculation module, which is used to calculate the bearing pressure difference based on the pressure difference. A risk assessment module, which is used to perform risk score calculation based on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep camber amount, bearing pressure difference, and horizontal displacement amount to obtain a risk score calculation result. A risk level judgment module, which is used to perform risk level matching based on the risk level - risk score data table according to the risk score calculation result to obtain a risk level matching result. The monitoring device further includes a remote monitoring unit, which is used to obtain the risk level matching result and output the risk level matching result to a specified display window.

[0006] Further, the calculation method of the cumulative settlement includes: Calculate the single-point cumulative settlement amount to obtain the calculation result of the single-point cumulative settlement amount. The calculation method of the single-point cumulative settlement amount is as follows: ; Wherein, S in is the cumulative settlement amount of the monitoring point at the i th place after the n th liquid level difference measurement, in millimeters; n is the number of liquid level difference measurements; ∆h in is the liquid level difference change value of the monitoring point at the i th place at the n th measurement, in millimeters; K is the sensitivity coefficient of the sensing unit; i is the number of monitoring points; Calculate the overall cumulative settlement amount based on the single-point cumulative settlement amount calculation result to obtain the overall cumulative settlement calculation. The calculation method of the overall cumulative settlement calculation is: ; Wherein, S n is the cumulative settlement amount of the bridge after the n th liquid level difference measurement, in millimeters; w i is the weight of the monitoring point at the i th place.

[0007] Further, the liquid level difference change value of the n th measurement is determined by the following method: ; Wherein, h in is the liquid level difference of the monitoring point at the i th place at the n th measurement, in millimeters; h in0 is the initial liquid level difference calibrated by the system when the monitoring point at the i th place is measured for the n th liquid level difference, in millimeters.

[0008] Further, the calculation method of the settlement rate is as follows:

[0009] Among them, v n is the settlement rate after the n th liquid level difference measurement, with the unit of millimeters per hour; t n is the time at the n th liquid level difference measurement, with the unit of hours.

[0010] Furthermore, the differential settlement calculation includes: Calculating the settlement difference amount between adjacent monitoring points, and the calculation method is as follows: ; Among them, ∆S i（i+1） is the differential settlement amount between the monitoring point at the i th position and the monitoring at the i +1th position, with the unit of millimeters; ∆ h （i+1）n is the change value of the liquid level difference at the i +1th monitoring point at the n th measurement, with the unit of millimeters; Calculating the bridge inclination rate, and the calculation method is as follows: ; Among them, ε is the bridge inclination rate; L is the bridge span, with the unit of millimeters.

[0011] Furthermore, the calculation method of the bearing pressure difference is as follows: ; ∆P is the bearing pressure difference of the bridge, with the unit of Pa; ∆P i is the pressure difference between the monitoring point at the i th position and the reference point, with the unit of Pa; L is the total bridge span, with the unit of meters; L i is the horizontal distance between the monitoring point at the i th position and the reference point, with the unit of meters.

[0012] Furthermore, the risk score calculation based on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep camber, bearing pressure difference calculation result and horizontal displacement amount includes: Respectively performing standardized calculations on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep camber, bearing pressure difference and horizontal displacement amount to obtain standardized parameters; Calculate the risk score based on standardized parameters to obtain the risk score calculation result.

[0013] Furthermore, the method of the standardized calculation is as follows: ; wherein, X j is the standardized calculation result of the input parameter; X 0j is the input parameter; X jmin is the minimum specification threshold allowed for the parameter; X jmax is the minimum specification threshold allowed for the parameter; j is the parameter number for the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, support pressure difference, and horizontal displacement.

[0014] Furthermore, the method of the risk score calculation is as follows: ; wherein, R is the risk score; μ j is the weight of the parameter numbered j ;

[0015] On the other hand, the present application also provides a bridge settlement monitoring method. This monitoring method uses the above-mentioned bridge settlement monitoring device. The monitoring method includes: Obtain bridge settlement parameters, where the bridge settlement parameters include liquid level difference, horizontal displacement, support pressure difference, and creep upward deflection; Calibrate the bridge settlement parameters to obtain the data calibration result; Calculate the cumulative settlement based on the calibrated liquid level difference to obtain the cumulative settlement calculation result; Calculate the settlement rate based on the cumulative settlement calculation result to obtain the settlement rate calculation result; Calculate the differential settlement based on the calibrated liquid level difference to obtain the differential settlement calculation result; Calculate the risk score based on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, calibrated creep upward deflection, support pressure difference, and calibrated horizontal displacement to obtain the risk score calculation result; Based on the risk level - risk score data table, match the risk level according to the risk score calculation result to obtain the risk level matching result; The remote monitoring unit obtains the risk level matching result and outputs the risk level matching result to the specified display window; Specifically, the calculation method of the cumulative settlement includes: Calculate the single-point cumulative settlement amount to obtain the calculation result of the single-point cumulative settlement amount. The calculation method of the single-point cumulative settlement amount is as follows: ; Wherein, S in is the cumulative settlement amount of the monitoring point at the i after the n th liquid level difference measurement, with the unit of millimeter; n is the number of liquid level difference measurements; ∆h in is the change value of the liquid level difference of the monitoring point at the i for the n th measurement, with the unit of millimeter; K is the sensitivity coefficient of the sensing unit; i is the number of monitoring points; Calculate the overall cumulative settlement amount based on the calculation result of the single-point cumulative settlement amount to obtain the overall cumulative settlement calculation. The calculation method of the overall cumulative settlement calculation is: ; Wherein, S n is the cumulative settlement amount of the bridge after the n th liquid level difference measurement, with the unit of millimeter; w i is the weight of the monitoring point at the i ; Specifically, the change value of the liquid level difference of the n th measurement is determined by the following method: ; Wherein, h in is the liquid level difference of the monitoring point at the i for the n th measurement, with the unit of millimeter; h in0 is the initial liquid level difference calibrated by the system during the i th liquid level difference measurement of the monitoring point at the n th, with the unit of millimeter; Specifically, the calculation method of the settlement rate is as follows:

[0016] Wherein, v n is the settlement rate after the n th liquid level difference measurement, with the unit of millimeter per hour; t n is for then Time at the second liquid level difference measurement, in hours; Specifically, the differential settlement calculation includes: Calculate the settlement difference between adjacent monitoring points, and the calculation method is as follows: ; Wherein, ∆S i（i+1） is the differential settlement amount between the monitoring point at the i th position and the monitoring point at the i th + 1 position, in millimeters; ∆ h （i+1）n is the change value of the liquid level difference at the i th + 1 monitoring point at the n th measurement, in millimeters; Calculate the bridge inclination rate, and the calculation method is as follows: ; Wherein, ε is the bridge inclination rate; L is the bridge span, in millimeters; Specifically, the calculation method of the bearing pressure difference is as follows: ; ∆P is the bearing pressure difference of the bridge, in Pa; ∆P i is the pressure difference between the monitoring point at the i th position and the reference point, in Pa; L is the total bridge span, in meters; L i is the horizontal distance between the monitoring point at the i th position and the reference point, in meters; Specifically, the risk score calculation based on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep camber, bearing pressure difference calculation result, and horizontal displacement amount includes: Perform standardized calculations on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep camber, bearing pressure difference, and horizontal displacement amount respectively to obtain standardized parameters; Perform risk score calculation based on the standardized parameters to obtain the risk score calculation result; Specifically, the method of the standardized calculation is as follows: ; Wherein, X j is the standardized calculation result of the input parameter; X 0j is the input parameter;X jmin is the minimum specification threshold allowed for the parameter; X jmax is the minimum specification threshold allowed for the parameter; j is the parameter number for the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, support pressure difference, and horizontal displacement; Specifically, the method for calculating the risk score is as follows: ; Among them, R is the risk score; μ j is the weight of the parameter numbered j ; In this embodiment, the weight μ j and the weight w i are determined by the following method: ; Among them, E is the weight; F m is the information entropy of the m th parameter; m is the total number of parameters; Among them, the method for determining the information entropy is as follows: ; Among them, Q xm is the proportion of the m th parameter in the x th sample; x is the number of samples; In this embodiment, the F m is a monitoring point parameter or a risk scoring parameter, and the risk scoring parameters include cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, support pressure difference, and horizontal displacement.

[0017] The present invention has the following advantages: The present invention discloses a bridge settlement monitoring device and method. The bridge settlement monitoring device includes a sensing unit and a settlement monitoring unit. The sensing unit is used to obtain bridge settlement parameters. The monitoring device further includes a remote monitoring unit, which is used to obtain a risk level matching result and output the risk level matching result to a specified display window. The present invention conducts risk assessment based on the bridge settlement parameters, realizes the quantitative grading and real-time early warning of bridge settlement risks, and provides data support for maintenance decision-making. The present invention monitors the bridge settlement parameters, calculates the risk score according to the bridge settlement parameters, and matches the risk level based on the risk score, thereby realizing the quantitative grading and real-time early warning of bridge settlement risks and providing data support for maintenance decision-making. On the other hand, the present invention also provides a bridge settlement monitoring method, which adopts the above-mentioned bridge settlement monitoring device. The monitoring method includes: obtaining bridge settlement parameters, where the bridge settlement parameters include liquid level difference, horizontal displacement, support pressure difference, and creep camber; calculating the cumulative settlement according to the liquid level difference to obtain a cumulative settlement calculation result; calculating the settlement rate according to the cumulative settlement calculation result to obtain a settlement rate calculation result; calculating the differential settlement according to the liquid level difference to obtain a differential settlement calculation result; calculating the risk score according to the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep camber, support pressure difference, and horizontal displacement to obtain a risk score calculation result. Description of the Drawings

[0019] Figure 1 is a schematic logical structure diagram of the monitoring device; Figure 2 is Figure 1 a schematic logical structure diagram of the settlement monitoring unit in the shown monitoring device; In the figure: 10, sensing unit; 20, settlement monitoring unit; 30, remote monitoring unit; 40, database; 21, data receiving module; 22, data calibration module; 23, settlement cumulative calculation module; 24, settlement rate calculation module; 25, settlement difference calculation module; 26, risk assessment module; 27, risk level judgment module; 28, pressure difference calculation module. Detailed Embodiments

[0020] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, but should not be construed as limiting the present application.

[0021] In this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0022] As described in the background art, in the prior art, sensor and data transmission technologies have been widely applied to bridge settlement monitoring. For example, static level gauges or displacement sensors are arranged to collect settlement data in real time, and abnormal signals are analyzed by a remote monitoring center. However, such systems can only provide intuitive data on the basic settlement amount or deformation trend, lacking the ability to quantitatively evaluate the settlement risk.

[0023] Therefore, in order to solve the above technical problems of the prior art, the present invention provides the following embodiments herein: Embodiment 1: This embodiment provides a bridge settlement monitoring device, as Figure 1 shown. The monitoring device includes a sensing unit 10 and a settlement monitoring unit 20. The sensing unit is used to obtain bridge settlement parameters; As Figure 2 shown, the settlement monitoring unit includes: A data receiving module 21, which is used to receive bridge settlement parameters. The bridge settlement parameters include the liquid level difference, horizontal displacement amount, pressure difference, and creep camber amount of each measuring point; A settlement accumulation calculation module 23, which is used to perform cumulative settlement calculation based on the liquid level difference to obtain a cumulative settlement calculation result; A settlement rate calculation module 24, which is used to perform settlement rate calculation based on the cumulative settlement calculation result to obtain a settlement rate calculation result; A settlement difference calculation module 25, which is used to perform differential settlement calculation based on the liquid level difference to obtain a differential settlement calculation result; A pressure difference calculation module, which is used to calculate the bearing pressure difference based on the pressure difference; A risk assessment module 26, which is used to perform risk score calculation based on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep camber amount, bearing pressure difference, and horizontal displacement amount to obtain a risk score calculation result; A risk level judgment module 27, which is used to perform risk level matching based on the risk level - risk score data table according to the risk score calculation result to obtain a risk level matching result; The monitoring device further includes a remote monitoring unit 30, which is used to obtain the risk level matching result and output the risk level matching result to a specified display window.

[0024] In this embodiment, the monitoring device may further include a database 40 for storing a risk level - risk score data table, standard data, user input data, and the like.

[0025] In this embodiment, the sensing unit can be selected from a static level, a pressure sensor, etc.

[0026] Specifically, the calculation method of the cumulative settlement includes: Calculate the single - point cumulative settlement amount to obtain the calculation result of the single - point cumulative settlement amount. The calculation method of the single - point cumulative settlement amount is as follows: ; Among them, S in is the cumulative settlement amount of the monitoring point at the i position after the n th liquid level difference measurement, with the unit of millimeter; n is the number of liquid level difference measurements; ∆h in is the liquid level difference change value of the monitoring point at the i position at the n th measurement, with the unit of millimeter; K is the sensitivity coefficient of the sensing unit; i is the number of monitoring points; Calculate the overall cumulative settlement amount based on the calculation result of the single - point cumulative settlement amount to obtain the calculation of the overall cumulative settlement. The calculation method of the overall cumulative settlement calculation is: ; Among them, S n is the cumulative settlement amount of the bridge after the n th liquid level difference measurement, with the unit of millimeter; w i is the weight of the monitoring point at the i position.

[0027] Specifically, the liquid level difference change value of the n th measurement is determined by the following method: ; Among them, h in is the liquid level difference of the monitoring point at the i position at the n th measurement, with the unit of millimeter; h in0 is thei Initial liquid level difference after system calibration during the n th liquid level difference measurement at the monitoring point, in millimeters.

[0028] Specifically, the settlement rate is calculated as follows:

[0029] where v n is the settlement rate after the n th liquid level difference measurement, in millimeters per hour; t n is the time during the n th liquid level difference measurement, in hours.

[0030] Specifically, the differential settlement calculation includes: Calculating the settlement difference between adjacent monitoring points, the calculation method is as follows: ; where ∆S i（i+1） is the differential settlement between the monitoring point at the i th position and the monitoring point at the i +1th position, in millimeters; ∆ h （i+1）n is the change value of the liquid level difference at the i +1th monitoring point during the n th measurement, in millimeters; Calculating the bridge inclination rate, the calculation method is as follows: ; where ε is the bridge inclination rate; L is the bridge span, in millimeters.

[0031] Specifically, the calculation method of the bearing pressure difference is as follows: ; ∆P is the bearing pressure difference of the bridge, in pascals; ∆P i is the pressure difference between the monitoring point at the i th position and the reference point, in pascals; L is the total bridge span, in meters; L i is the horizontal distance between the monitoring point at the i th position and the reference point, in meters.

[0032] Specifically, the risk score calculation based on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, bearing pressure difference calculation result, and horizontal displacement amount includes: Performing standardized calculations on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, bearing pressure difference, and horizontal displacement amount respectively to obtain standardized parameters; Calculating the risk score based on the standardized parameters to obtain the risk score calculation result.

[0033] Specifically, the method of the standardized calculation is as follows: ; Wherein, X j Is the standardized calculation result of the input parameter; X 0j Is the input parameter; X jmin Is the minimum specification threshold allowed for the parameter; X jmax Is the minimum specification threshold allowed for the parameter; j Is the parameter number of the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, bearing pressure difference, and horizontal displacement amount.

[0034] Specifically, the method of the risk score calculation is as follows: ; Wherein, R Is the risk score; μ j Is for the parameter numbered j The weight of.

[0035] In this embodiment, the weights μ j And the weight w i Are determined by the following method: ; Wherein, E Is the weight; F m Is for the m The information entropy of the item parameter; m Is the total number of parameters.

[0036] Wherein the determination method of the information entropy is as follows: ; Wherein, Q xm Is for the m Item parameter at thex The proportion in the item sample; x is the number of samples.

[0037] In this embodiment, the F m is a monitoring point parameter or a risk score parameter, and the risk score parameter includes the cumulative settlement calculation result, the settlement rate calculation result, the differential settlement calculation result, the creep camber, the bearing pressure difference, and the horizontal displacement.

[0038] In this embodiment, by monitoring the bridge settlement parameters, calculating the risk score according to the bridge settlement parameters, and matching the risk level based on the risk score, the quantitative grading and real-time warning of the bridge settlement risk are realized, providing data support for the maintenance decision-making.

[0039] In this embodiment, the settlement monitoring unit may further include a data calibration module (22) for calibrating the data collected by the sensing unit according to the temperature parameter, thereby improving the accuracy of the risk assessment.

[0040] Embodiment 2: On the other hand, the present invention also provides a bridge settlement monitoring method, which adopts the above-mentioned bridge settlement monitoring device, and the monitoring method includes: Obtain bridge settlement parameters, where the bridge settlement parameters include liquid level difference, horizontal displacement, bearing pressure difference, creep camber; Perform data calibration on the bridge settlement parameters to obtain a data calibration result; Calculate the cumulative settlement according to the calibrated liquid level difference to obtain a cumulative settlement calculation result; Calculate the settlement rate according to the cumulative settlement calculation result to obtain a settlement rate calculation result; Calculate the differential settlement according to the calibrated liquid level difference to obtain a differential settlement calculation result; Perform risk score calculation according to the cumulative settlement calculation result, the settlement rate calculation result, the differential settlement calculation result, the calibrated creep camber, the bearing pressure difference, and the calibrated horizontal displacement to obtain a risk score calculation result; Based on the risk level - risk score data table, perform risk level matching according to the risk score calculation result to obtain a risk level matching result; The remote monitoring unit obtains the risk level matching result and outputs the risk level matching result to the specified display window.

[0041] Specifically, the calculation method of the cumulative settlement includes: Calculate the single-point cumulative settlement amount to obtain a single-point cumulative settlement amount calculation result, and the calculation method of the single-point cumulative settlement amount is as follows: ; Among them, S in is the cumulative settlement amount after the i th monitoring point has undergone the n th liquid level difference measurement, with the unit of millimeters; n is the number of liquid level difference measurements; ∆h in is the i th liquid level difference change value of the n th monitoring point, with the unit of millimeters; K is the sensitivity coefficient of the sensing unit; i is the number of monitoring points; According to the calculation result of the single-point cumulative settlement amount, the overall cumulative settlement amount is calculated to obtain the overall cumulative settlement calculation. The calculation method of the overall cumulative settlement calculation is: ; Among them, S n is the cumulative settlement amount of the bridge after the n th liquid level difference measurement, with the unit of millimeters; w i is the weight of the i th monitoring point.

[0042] Specifically, the liquid level difference change value of the n th measurement is determined by the following method: ; Among them, h in is the liquid level difference of the i th monitoring point at the n th measurement, with the unit of millimeters; h in0 is the initial liquid level difference after system calibration during the i th liquid level difference measurement of the n th monitoring point, with the unit of millimeters.

[0043] Specifically, the calculation method of the settlement rate is as follows:

[0044] Among them, v n is the settlement rate after the n th liquid level difference measurement, with the unit of millimeters per hour; t n is the time at the n th liquid level difference measurement, with the unit of hours.

[0045] Specifically, the differential settlement calculation includes: Calculate the settlement difference between adjacent monitoring points, and the calculation method is as follows: ; Among them, ∆S i（i+1） is the differential settlement between the monitoring point at the i th location and the monitoring point at the i +1th location, with the unit of millimeter; ∆ h （i+1）n is the change value of the liquid level difference at the i +1th monitoring point for the n th measurement, with the unit of millimeter; Calculate the bridge inclination rate, and the calculation method is as follows: ; Among them, ε is the bridge inclination rate; L is the bridge span, with the unit of millimeter.

[0046] Specifically, the calculation method of the bearing pressure difference is as follows: ; ∆P is the bearing pressure difference of the bridge, with the unit of Pa; ∆P i is the pressure difference between the monitoring point at the i th location and the reference point, with the unit of Pa; L is the total span of the bridge, with the unit of meter; L i is the horizontal distance between the monitoring point at the i th location and the reference point, with the unit of meter.

[0047] Specifically, the risk score calculation based on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep camber, bearing pressure difference calculation result, and horizontal displacement amount includes: Perform standardized calculations on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep camber, bearing pressure difference, and horizontal displacement amount respectively to obtain standardized parameters; Based on the standardized parameters, perform risk score calculation to obtain the risk score calculation result.

[0048] Specifically, the method of the standardized calculation is as follows: ; Among them, X j is the standardized calculation result of the input parameter; X 0j is the input parameter; Xjmin is the minimum specification threshold allowed for the parameter; X jmax is the minimum specification threshold allowed for the parameter; j is the parameter number for the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, support pressure difference, and horizontal displacement.

[0049] Specifically, the method for calculating the risk score is as follows: ; where R is the risk score; μ j is the weight of the parameter numbered j ;

[0050] In this embodiment, the weights μ j and the weight w i are determined by the following method: ; where E is the weight; F m is the information entropy of the m th parameter; m is the total number of parameters.

[0051] The method for determining the information entropy is as follows: ; where Q xm is the proportion of the m th parameter in the x th sample; x is the number of samples.

[0052] In this embodiment, the F m is a monitoring point parameter or a risk scoring parameter, and the risk scoring parameters include the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, support pressure difference, and horizontal displacement.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bridge settlement monitoring device, characterized in that, It includes a sensing unit and a settlement monitoring unit. The sensing unit is used to obtain bridge settlement parameters; The settlement monitoring unit includes: A data receiving module, which is used to receive bridge settlement parameters. The bridge settlement parameters include the liquid level difference, horizontal displacement, pressure difference, and creep upward deflection of each measuring point; A settlement accumulation calculation module, which is used to calculate the cumulative settlement according to the liquid level difference and obtain the cumulative settlement calculation result; A settlement rate calculation module, which is used to calculate the settlement rate according to the cumulative settlement calculation result and obtain the settlement rate calculation result; A settlement difference calculation module, which is used to calculate the differential settlement according to the liquid level difference and obtain the differential settlement calculation result; A pressure difference calculation module, which is used to calculate the bearing pressure difference according to the pressure difference; A risk assessment module, which is used to calculate the risk score according to the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, bearing pressure difference, and horizontal displacement, and obtain the risk score calculation result; A risk level judgment module, which is used to match the risk level based on the risk level - risk score data table according to the risk score calculation result and obtain the risk level matching result; The monitoring device further includes a remote monitoring unit, which is used to obtain the risk level matching result and output the risk level matching result to a specified display window.

2. The bridge settlement monitoring device according to claim 1, characterized in that, The calculation method of the cumulative settlement includes: Calculate the single - point cumulative settlement amount to obtain the single - point cumulative settlement amount calculation result. The calculation method of the single - point cumulative settlement amount is as follows: ； wherein, S in is the cumulative settlement amount after the i th liquid level difference measurement at the n th monitoring point, with the unit of millimeter; n is the number of liquid level difference measurements; ∆h in is the change value of the liquid level difference at the i th monitoring point for the n th measurement, with the unit of millimeter; K is the sensitivity coefficient of the sensing unit; i is the number of monitoring points; Calculate the overall cumulative settlement amount according to the single - point cumulative settlement amount calculation result to obtain the overall cumulative settlement calculation. The calculation method of the overall cumulative settlement calculation is: ； Among them, S n is the cumulative settlement after the n -th liquid level difference measurement of the bridge, in millimeters; w i is the weight of the monitoring point at i location.

3. The bridge settlement monitoring device according to claim 2, characterized in that, The n change value of the liquid level difference in the th measurement is determined by the following method: ； Among them, h in is the liquid level difference at the i th monitoring point for the n th measurement, in millimeters; h in0 is the initial liquid level difference after system calibration during the i th liquid level difference measurement at the n th monitoring point, in millimeters.

4. The bridge settlement monitoring device according to claim 2, characterized in that, The calculation method of the settlement rate is as follows: ； Among them, v n is the settlement rate after the n th liquid level difference measurement, with the unit of millimeters per hour; t n is the time at the n th liquid level difference measurement, with the unit of hours.

5. The bridge settlement monitoring device according to claim 3, characterized in that, The differential settlement calculation includes: Calculate the settlement difference amount between adjacent monitoring points. The calculation method is as follows: ； Among them, ∆S i（i+1） is the differential settlement between the monitoring point at the i th position and the monitoring at the i +(1)th position, with the unit of millimeter; ∆h （i+1）n is the change value of the liquid level difference at the i +(1)th monitoring point for the n th measurement, with the unit of millimeter; Calculate the bridge tilt rate. The calculation method is as follows: ； Among them, ε is the bridge inclination rate; L is the bridge span, in millimeters.

6. The bridge settlement monitoring device according to claim 2, wherein The calculation method of the bearing pressure difference is as follows: ； ∆P is the bearing pressure difference of the bridge, with the unit of Pascal; ∆P i is the pressure difference between the monitoring point at the i th position and the reference point, with the unit of Pascal; L is the total span of the bridge, in meters; L i is the i horizontal distance between the monitoring point at the and the reference point, in meters.

7. The bridge settlement monitoring device according to claim 1, characterized in that, The risk score calculation according to the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, bearing pressure difference calculation result, and horizontal displacement includes: Perform standardization calculations on the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, bearing pressure difference, and horizontal displacement respectively to obtain standardized parameters; Calculate the risk score based on the standardized parameters to obtain the risk score calculation result.

8. The bridge settlement monitoring device according to claim 6, characterized in that, The calculation method of the standardization calculation is as follows: ； Among them, X j is the standardized calculation result of the input parameter; X 0j is the input parameter; X jmin is the minimum specification threshold allowed for the parameter; X jmax is the minimum specification threshold allowed for the parameter; j is the parameter number for the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, support pressure difference, and horizontal displacement amount.

9. The bridge settlement monitoring device according to claim 7, characterized in that, The calculation method of the risk score calculation is as follows: ； Among them, R is the risk score; μ j is the weight of the parameter numbered j .

10. A bridge settlement monitoring method, characterized in that, This monitoring method uses a bridge settlement monitoring device as described in any one of claims 1 - 9 above. The monitoring method includes: Obtain bridge settlement parameters. The bridge settlement parameters include liquid level difference, horizontal displacement, bearing pressure difference, and creep upward deflection; Perform data calibration on the bridge settlement parameters to obtain the data calibration result; Calculate the cumulative settlement according to the calibrated liquid level difference to obtain the cumulative settlement calculation result; Calculate the settlement rate according to the cumulative settlement calculation result to obtain the settlement rate calculation result; Calculate the differential settlement according to the calibrated liquid level difference to obtain the differential settlement calculation result; Based on the cumulative settlement calculation results, settlement rate calculation results, differential settlement calculation results, calibrated creep camber, bearing pressure difference, and calibrated horizontal displacement, a risk score calculation is performed to obtain the risk score calculation results; Based on the risk level - risk score data table, a risk level matching is performed according to the risk score calculation results to obtain the risk level matching results; The remote monitoring unit obtains the risk level matching results and outputs the risk level matching results to the specified display window; Specifically, the calculation method of the cumulative settlement calculation includes: Calculate the single - point cumulative settlement amount to obtain the single - point cumulative settlement amount calculation result. The calculation method of the single - point cumulative settlement amount is as follows: ； Wherein, S in is the cumulative settlement at the i th monitoring point after the n th liquid level difference measurement, in millimeters; n is the number of liquid level difference measurements; ∆h in is the change value of the liquid level difference at the i th monitoring point for the n th measurement, in millimeters; K is the sensitivity coefficient of the sensing unit; i is the number of monitoring points; Based on the single - point cumulative settlement amount calculation result, calculate the overall cumulative settlement amount to obtain the overall cumulative settlement calculation. The calculation method of the overall cumulative settlement calculation is: ； Among them, S n is the cumulative settlement after the n th liquid level difference measurement of the bridge, with the unit of millimeter; w i is the weight of the monitoring point at i ; Specifically, the change value of the liquid level difference in the n nth measurement is determined by the following method: ； Among them, h in is the i liquid level difference at the n th measurement point, in millimeters; h in0 is the i initial liquid level difference after system calibration at the n th liquid level difference measurement, in millimeters; Specifically, the calculation method of the settlement rate is as follows: ； Among them, v n is the settlement rate after the n th liquid level difference measurement, with the unit of millimeters per hour; t n is the time at the n th liquid level difference measurement, with the unit of hours; Specifically, the differential settlement calculation includes: Calculate the settlement difference amount between adjacent monitoring points. The calculation method is as follows: ； Wherein, ∆S i（i+1） is the differential settlement amount monitored at the i th monitoring point and the i th + 1 monitoring point, in millimeters; ∆h （i+1）n is the change value of the liquid level difference measured at the i th + 1 monitoring point for the n th time, in millimeters; Calculate the bridge inclination rate. The calculation method is as follows: ； Among them, ε is the bridge inclination rate; L is the bridge span, in millimeters; Specifically, the calculation method of the bearing pressure difference is as follows: ； ∆P is the bearing pressure difference of the bridge, in Pa; ∆P i is the i pressure difference between the monitoring point and the reference point at location, in Pa; L is the total span of the bridge, in m; L i is the i horizontal distance between the monitoring point and the reference point at location, in m; Specifically, the risk score calculation based on the cumulative settlement calculation results, settlement rate calculation results, differential settlement calculation results, creep camber, bearing pressure difference calculation results, and horizontal displacement amount includes: Perform standardization calculations on the cumulative settlement calculation results, settlement rate calculation results, differential settlement calculation results, creep camber, bearing pressure difference, and horizontal displacement amount respectively to obtain standardized parameters; Based on the standardized parameters, perform a risk score calculation to obtain the risk score calculation results; Specifically, the calculation method of the standardization calculation is as follows: ； Among them, X j is the standardized calculation result of the input parameter; X 0j is the input parameter; X jmin is the minimum specification threshold allowed for the parameter; X jmax is the minimum specification threshold allowed for the parameter; j is the parameter number for the cumulative settlement calculation result, settlement rate calculation result, differential settlement calculation result, creep upward deflection, bearing pressure difference, and horizontal displacement amount; Specifically, the calculation method of the risk score calculation is as follows: ； Among them, R is the risk score; μ j is the weight of the parameter numbered j ; In this embodiment, the weight μ j and the weight w i are determined in the following manner: ； Among them, E is the weight; F m is the information entropy of the m th parameter; m is the total number of parameters; Among them, the determination method of the information entropy is as follows: ； Among them, Q xm is the proportion of the m th parameter in the x th sample; x is the number of samples; In implementation, the F m is a monitoring point parameter or a risk score parameter, and the risk score parameter includes a cumulative settlement calculation result, a settlement rate calculation result, a differential settlement calculation result, a creep upward deflection amount, a bearing pressure difference, and a horizontal displacement amount.

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