CN112762888B - Bridge space displacement monitoring method and system and readable storage medium - Google Patents
Bridge space displacement monitoring method and system and readable storage medium Download PDFInfo
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- CN112762888B CN112762888B CN202011599234.4A CN202011599234A CN112762888B CN 112762888 B CN112762888 B CN 112762888B CN 202011599234 A CN202011599234 A CN 202011599234A CN 112762888 B CN112762888 B CN 112762888B
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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Abstract
The invention relates to the technical field of bridge construction, in particular to a bridge space deflection monitoring method, a system and a readable storage medium. The device for monitoring the spatial deflection of the bridge is characterized in that through a combined monitoring method combining a GNSS and an inclinometer, the inclinometer and GNSS measuring points are reasonably arranged on a bridge girder, dynamic monitoring of the spatial deflection of the long-span bridge girder under the load action is realized through a core algorithm, and meanwhile, an automatic alarm device is also arranged, so that dynamic monitoring and intelligent monitoring of the spatial deflection of the long-span bridge girder can be realized.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a bridge space deflection monitoring method and system and a readable storage medium.
Background
In bridge engineering, deformation monitoring needs to be carried out on a bridge frequently in order to guarantee the safety of the bridge, including deformation monitoring in the construction period and the operation period of the bridge, so that the purpose of mastering the deformation condition of the bridge is achieved. The existing bridge deformation monitoring method comprises the following steps: displacement sensor method, laser total station method, acceleration sensor method, inclinometer method, hydrostatic level method, GNSS method, and the like.
The displacement sensor method is a monitoring method for measuring bridge deformation by using a displacement sensor. Because the displacement sensor is a contact type sensor, the displacement sensor can realize measurement only by directly contacting with a measuring point, the displacement sensor is difficult to install and even incapable of measuring the point which is difficult to access, and the displacement sensor has obvious defects in the measurement of a long-span bridge structure.
The laser total station method is that a reflector is fixed on a monitoring point during measurement, and a total station is erected at a base station. And after the target is manually aimed, the reflector is tracked by a total station, and the change of the distance between the monitoring point and the base station is measured. The method has the advantages of higher precision, but is difficult to capture a monitoring point when the structure swings or vibrates too much, and is difficult to track a target by laser particularly under the condition of severe atmosphere (such as typhoon, heavy rain or heavy fog, and the like) and poor in real-time performance. Therefore, the deformation of the bridge structure when the vehicle passes through cannot be measured.
The acceleration sensor method is that an acceleration sensor is installed on a structure during measurement, the acceleration of the structure during vibration is tested, and displacement is obtained through acceleration integration. The method has large displacement measurement error, and the amplitude of the whole vibration of the structure cannot be measured when the structure slowly vibrates. This method does not allow the static deformation due to the loading to be measured.
The inclinometer method is a method for calculating the bridge deformation by measuring the slope on the deflection line, and because the slopes at all positions on the bridge deflection line are not consistent, a large number of sensors are required to be arranged for obtaining the bridge deflection line, and meanwhile, a large transmission error exists in the calculation process of calculating the bridge deformation by the slope.
The static leveling method is to measure the deflection of a bridge by utilizing the principle of communicated tubes, and has the defects that the dynamic deformation under the action of load cannot be measured, leveling is needed when measuring points are arranged, and the construction of a large-span bridge is difficult due to the influence of longitudinal slopes.
The GNSS method is a rapid monitoring method in which a satellite positioning system adopts GPS/beidou and other satellite positioning + PTK technologies, but the method is high in cost.
In view of the above, it is necessary to provide a bridge space displacement monitoring method and system, and a readable storage medium to solve the above problems.
Disclosure of Invention
The invention aims to provide a bridge space deflection monitoring method and system and a readable storage medium, and a combined monitoring method combining a GNSS and an inclinometer.
In order to achieve the purpose, the invention provides a bridge space deflection monitoring method which comprises the following steps:
sampling first monitoring data acquired by a GNSS antenna according to a preset sampling frequency; the GNSS antenna is arranged at a GNSS survey point of the bridge;
sampling the inclination data collected by the inclinometer according to the preset sampling frequency; the inclinometer and the GNSS antenna are oppositely arranged on two sides of a preset section of the bridge girder;
sampling second monitoring data acquired by the base station according to the preset sampling frequency; wherein the base station is arranged at a fixed position near the GNSS measuring point;
resolving the first monitoring data and the second monitoring data to obtain position coordinate change data of the GNSS measuring point (X, Y, Z);
and calculating the position change data (X, Y, Z) of the GNSS measuring points and the inclination angle data according to a preset algorithm to obtain the position coordinate change data (X ', Y ', Z ') of the inclinometer.
Preferably, the method further comprises the steps of:
judging whether an automatic alarm triggering condition is met or not according to whether the position coordinate change data (X, Y, Z) of the GNSS measuring point and/or the position coordinate change data (X ', Y ', Z ') of the inclinometer exceed a preset threshold or not;
when at least one of the position coordinate change data (X, Y, Z) of the GNSS measuring point and/or the position coordinate change data (X ', Y ', Z ') of the inclinometer exceeds the preset threshold, judging that an automatic alarm triggering condition is met, and executing a preset automatic alarm instruction;
and when the position coordinate change data (X, Y, Z) of the GNSS measuring point and/or the position coordinate change data (X ', Y ', Z ') of the inclinometer do not exceed the preset threshold, judging that an automatic alarm triggering condition is not met, and maintaining the current state.
Preferably, the preset algorithm is: x ' = X, Y ' = Y, Z ' = Z + L × sin β; wherein L is the horizontal distance between the GNSS measuring point and the inclinometer, and β is the measurement value of the inclinometer.
Preferably, the algorithmic modification includes one or more of filtering, removing outliers.
Preferably, the preset sampling frequency is not lower than 10Hz.
Preferably, the first monitoring data collected by the GNSS antenna includes one or more of beidou, GPS, GLONASS, GALILEO navigation system data.
The invention also provides a bridge space deflection monitoring system, which comprises a bridge space deflection monitoring device and a control system arranged on the bridge space deflection monitoring device, wherein the control system comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor; the processor implements the steps of the bridge space displacement monitoring method according to any one of the above items when executing the computer program.
The invention further provides a readable storage medium, which stores the computer program, and preferably, the computer program, when executed by the processor, implements the steps of the bridge space displacement monitoring method.
Compared with the prior art, the bridge space deflection monitoring method, the bridge space deflection monitoring system and the readable storage medium have the following beneficial effects:
the invention provides a bridge space deflection monitoring method and system and a readable storage medium, which comprises the following steps: sampling first monitoring data acquired by a GNSS antenna according to a preset sampling frequency, sampling inclination data acquired by an inclinometer according to the preset sampling frequency, and sampling second monitoring data acquired by a base station according to the preset sampling frequency; the GNSS antenna is arranged at a GNSS measuring point of the bridge, the inclinometer and the antenna are oppositely arranged on two sides of a preset section of the bridge girder, and the base station is arranged at a fixed position near the GNSS measuring point; resolving the first monitoring data and the second monitoring data to obtain position coordinate change data of the GNSS measuring point (X, Y, Z); and calculating the position change data (X, Y, Z) of the GNSS measuring point and the inclination angle data according to a preset algorithm to obtain the position coordinate change data (X ', Y ', Z ') of the inclinometer. And meanwhile, an automatic alarm module is also arranged, and when at least one of the position coordinate change data (X, Y, Z) of the GNSS measuring point and/or the position coordinate change data (X ', Y ' and Z ') of the inclinometer exceeds a preset threshold, a preset alarm instruction can be automatically executed.
The bridge space deflection monitoring method and system and the readable storage medium have the advantages that multi-target measurement can be realized; the vertical deformation, the transverse deformation and the torsional deformation of the main beam of the long-span bridge can be measured; the monitoring cost is reduced; dynamic measurement under the load effect is realized, and the monitoring precision is improved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an application scenario diagram of a bridge space displacement monitoring method and system and a readable storage medium in an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a bridge space displacement monitoring method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a computer device of a bridge spatial displacement monitoring system according to an embodiment of the present invention;
FIG. 4 is a top view of a bridge spatial shift monitoring device according to an embodiment of the present invention;
fig. 5 is a torsional deformation diagram of a bridge girder of the bridge space displacement monitoring device according to an embodiment of the present invention under a load.
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
The reference numbers illustrate:
a processor 51; a memory 52; the computer program 53;
a bridge girder 100;
a GNSS antenna 110;
a base station 120;
an inclinometer 130;
a data gateway 140;
a backend server 150;
a mobile terminal 160;
and a computer terminal 170.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The bridge space deflection monitoring method and system and the readable storage medium provided by the invention can be applied to the application environment shown in figure 1. The application environment comprises a bridge space displacement monitoring device, a data gateway 140 in communication connection with the GNSS antenna 110, the inclinometer 130 and the base station 120, a background server 150 in limited or wireless connection with the data gateway 140, and a first terminal 160 and a second terminal 170, specifically, the background server 150 performs corresponding processing and storage on the monitored data and sends the result to the internet, the first terminal 160 may be a terminal used by a user, and the second terminal 170 may also be a terminal used by an operator. The terminal may be, but is not limited to, various smart phones, desktop computers, tablet computers, and portable wearable devices, and the server 150 may be implemented as an independent server or a server cluster composed of a plurality of servers.
The user can view the result through the mobile terminal 160 or the computer terminal 170 and perform corresponding treatment. If the monitoring data exceeds the preset threshold value, the background server 150 can automatically alarm in a sound-light or information sending mode, so that intelligent monitoring of the bridge space displacement is realized.
Referring to fig. 4-5, an embodiment of a bridge space displacement monitoring apparatus according to the present invention includes at least one GNSS antenna 110, at least one GNSS receiver corresponding to the GNSS antenna 110, at least one inclinometer 130, and at least one base station 120 corresponding to the GNSS antenna 110. The GNSS antenna 110 is disposed at a GNSS measurement point, the inclinometer 130 and the GNSS antenna 110 are disposed on two sides of a preset cross section of the bridge girder 100, and the base station 120 is disposed at a fixed position near the GNSS measurement point. Specifically, the GNSS antenna 110 and the base station 120 are configured to collect position coordinate data of a navigation system such as beidou, GPS, GLONASS, GALILEO, the GNSS receiver is configured to decode and convert monitoring data collected by the GNSS antenna 110, the inclinometer 130 is configured to collect an angle of lateral torsional deformation of the bridge girder 100, and the inclinometer 130 and the GNSS antenna 110 are disposed at left and right ends of a preset cross section of the bridge girder 100, typically, at an upper surface of the bridge at the left and right ends of the cross section of the bridge girder 100. Meanwhile, the position of the GNSS antenna 110 is set at the position of the GNSS measurement point, that is, the position change data acquired by the GNSS antenna 110 is the position change data of the GNSS measurement point. In addition, one or more base stations 120 are correspondingly arranged at fixed positions near GNSS measurement points, and it should be noted that the positions of the base stations 120 need to be fixed, so that the base stations 120 can be arranged at positions close to the ground around the bridge or piers, and the base stations 120 can be taken as the base stations 120 of the present invention as long as the positions of the base stations 120 are kept fixed and close to the GNSS measurement points, and the signal enhancement effect of the base stations 120 can greatly improve the accuracy of the final bridge space displacement monitoring data, so as to meet the measurement requirements.
Referring to fig. 2, a method for monitoring spatial displacement of a bridge according to an embodiment of the present invention includes:
the method comprises the following steps that S1, first monitoring data collected by a GNSS antenna are sampled according to a preset sampling frequency;
sampling the inclination angle data collected by the inclinometer according to a preset sampling frequency;
and sampling the second monitoring data acquired by the base station according to a preset sampling frequency.
The sampling frequencies of the GNSS antenna, the inclinometer and the base station are kept consistent, and the time is synchronous. Preferably, the sampling frequency in this embodiment is not lower than 10Hz, that is, the GNSS antenna, the inclinometer, and the base station simultaneously and synchronously perform sampling processing according to the sampling frequency not lower than 10Hz, so as to ensure that the first monitoring data, the second monitoring data, and the inclination data acquired each time are data at the same time, so as to perform subsequent analysis and calculation. It should be noted that the base station also needs to sample according to a preset sampling frequency, and since the second monitoring data collected by the base station changes correspondingly with changes of, for example, the atmosphere and the cloud layer, it is also necessary to analyze and calculate the monitoring collected by the base station. The first monitoring data collected by the GNSS antenna and the second monitoring data collected by the base station include, but are not limited to, one or more of beidou, GPS, GLONASS, and GALILEO navigation system data.
And S2, resolving the first monitoring data and the second monitoring data to obtain position coordinate change data (X, Y, Z) of the GNSS measuring points. Specifically, the first monitoring data acquired by the GNSS antenna and the second monitoring data acquired by the base station are resolved. The specific resolving process is to send first monitoring data acquired by the GNSS antenna and second monitoring data acquired by the base station to the background server in a wired or wireless mode, and the background server performs corresponding resolving and outputs position coordinate change data of the GNSS measuring points according to a resolving result (X, Y, Z). It is clear that the GNSS measurement points fluctuate in real time with factors such as load applied to the bridge and external wind, and especially fluctuate significantly when a large bus or a truck passes on the surface of a main beam of the bridge. Therefore, the position change data of the GNSS measuring points can be obtained through calculation, and if the position change data exceeds a preset threshold value, an automatic alarm device is arranged to automatically alarm for relevant technicians to analyze and dispose.
In addition, the result of settlement is the position of the GNSS antenna, so the GNSS antenna must be arranged at the position of the GNSS measuring point, and the position of the GNSS receiver does not affect the measurement result.
Further, in a preferred embodiment, the method further includes a step S3 of performing algorithm correction on the position coordinate change data (X, Y, Z) and the tilt angle data. Specifically, the algorithm correction mode includes, but is not limited to, performing conventional processing such as filtering and removing abnormal values on the acquired position coordinate change data (X, Y, Z) and the inclination angle data, for example, in the acquired data, if some data suddenly and abnormally increase or decrease or some data which do not meet a preset condition are removed, the accuracy of the final monitoring data can be improved through the algorithm correction.
And S4, calculating the position change data (X, Y, Z) of the GNSS measuring point and the inclination data according to a preset algorithm to obtain position coordinate change data (X ', Y ', Z ') of the inclinometer. Specifically, the position coordinate change data (X ', Y ', Z ') of the inclinometer can be calculated and obtained according to the corresponding preset algorithm and the position change data (X, Y, Z) of the GNSS measuring point and the inclination data. It should be clear that the purpose of introducing the inclinometer is to measure the position change data of the transverse torsion angle and the transverse torsion deformation of the main beam of the bridge, so as to be analyzed and disposed by the related technical personnel.
Specifically, the preset algorithm may specifically be: x ' = X, Y ' = Y, Z ' = Z + L X sin beta, wherein Z is the change of the GNSS measuring point in the vertical direction, L is the horizontal distance between the GNSS measuring point and the inclinometer measuring point, beta is the measurement value of the inclinometer, and the unit of beta is chosen to be radian. Because the bridge girder is mainly subjected to longitudinal load vertical to the surface of the bridge girder, the GNSS measuring point and the inclinometer are oppositely arranged on two sides of the same section of the bridge girder, the section is mainly deformed in the Z direction, and the deformation in the X direction and the Y direction is very small and can be ignored, so that X '= X and Y' = Y.
It is understood that the preset algorithm is related to the installation position of the inclinometer and the position of the GNSS measurement points, and since the embodiment adopts a symmetrical installation mode of the same cross section, X '= X, Y' = Y; in other embodiments, the preset algorithm may be reasonably set according to the position relationship before and after the bridge deformation.
And S5, judging whether an automatic alarm triggering condition is met. Specifically, the automatic alarm triggering condition is that whether at least one of the position coordinate change data (X, Y, Z) of the GNSS measurement point and/or the position coordinate change data (X ', Y ', Z ') of the inclinometer exceeds a preset threshold. And (3) introducing an automatic alarm module by setting a preset threshold value, judging whether at least one of the position coordinate change data (X, Y, Z) of the GNSS measuring point and/or the position coordinate change data (X ', Y ' and Z ') of the inclinometer exceeds the preset threshold value, if so, executing the step S6, otherwise, executing the step S7. Further, the preset threshold may be set according to an actual situation, that is, the preset thresholds of different bridges may be different, and are specifically set according to actual needs.
And S6, judging that the alarm meets the automatic alarm triggering condition, and executing a preset automatic alarm instruction. That is, if at least one of the position coordinate change data (X, Y, Z) of the GNSS measurement point and/or the position coordinate change data (X ', Y ', Z ') of the inclinometer exceeds a preset threshold, it is determined that it satisfies an automatic alarm triggering condition, and a preset automatic alarm instruction is executed. Specifically, the automatic alarm instruction includes, but is not limited to, an automatic alarm through sound and light or by sending information.
And S7, maintaining the current state when the automatic alarm triggering condition is not met. That is to say, neither the position coordinate change data (X, Y, Z) of the GNSS measurement point nor the position coordinate change data (X ', Y ', Z ') of the inclinometer exceeds a preset threshold, and it is determined that the automatic alarm triggering condition is not met, and the current normal monitoring state is maintained.
Referring to fig. 3, a control system includes a bridge space displacement monitoring device and a control system disposed on the bridge space displacement monitoring device, the control system includes a memory 52, a processor 51, and a computer program 53 stored in the memory 52 and capable of running on the processor 51, and the steps of the bridge space displacement monitoring method are implemented when the processor 51 executes the computer program 53.
An embodiment of the present invention provides a readable storage medium, where the computer program 53 is stored, and the computer program 53, when executed by the processor 51, implements the steps of the bridge space displacement monitoring method as described above. It is understood that the above-mentioned bridge space displacement monitoring method is implemented by the processor 51, and therefore all the embodiments of the above-mentioned method are applicable to the computer-readable storage medium, and can achieve the same or similar advantages.
The bridge space deflection monitoring device reasonably arranges the inclinometer 130 and GNSS measuring points on the bridge girder 100 through a combined monitoring method combining the GNSS and the inclinometer 130, realizes dynamic monitoring of the space deflection of the large-span bridge girder 100 under the load action through a corresponding core algorithm, and is also provided with an automatic alarm device, so that if the monitoring data of the bridge space deflection exceeds a preset threshold value, the alarm can be given for corresponding technicians to analyze and handle, and if the monitoring data does not exceed the preset threshold value, the normal monitoring state is maintained, and the bridge space deflection monitoring device and the system have the advantages that multi-target measurement can be realized; the vertical deformation, the transverse deformation and the torsional deformation of the main girder 100 of the long-span bridge can be measured; the monitoring cost is reduced; dynamic measurement under the load effect is realized, and the monitoring precision is improved.
As a specific embodiment of the present invention, the predetermined section is a cross section of the bridge girder 100. Specifically, the preset section of the bridge may be set according to actual conditions, that is, as long as the sections of the GNSS antenna 110 and the inclinometer 130 that are oppositely disposed at two ends of the section can be theoretically used as the preset section, preferably, in this embodiment, the preset section is a cross section of the bridge girder 100. The inclinometer 130 is introduced to measure the torsional deformation of the bridge girder 100, and according to the bridge space displacement monitoring step, the change data (X ', Y ', Z ') of the position coordinates of the inclinometer 130 can be obtained through a preset algorithm according to the change data (X, Y, Z) of the position coordinates of the GNSS measurement points and the inclination data monitored by the inclinometer 130, so that the torsional deformation of the cross section of the bridge girder 100 can be obtained. Since the bridge girder 100 is mainly subjected to vertical load perpendicular to the upper surface of the bridge girder 100, there is mainly a vertical deformation difference between the GNSS measurement point and the inclinometer 130 on the same cross section, and the deformation amounts of the two directions are considered to be identical in space. Specifically, the preset algorithm specifically comprises: x ' = X, Y ' = Y, Z ' = Z + L X sin beta, wherein Z is the change of the GNSS measuring point in the vertical direction, L is the horizontal distance between the GNSS measuring point and the inclinometer 130 measuring point, beta is the measured value of the inclinometer 130, and the unit of beta is radian.
In a preferred embodiment of the present invention, the number of the base stations 120 is 1 to 8. The base station 120 is equivalent to a signal amplification device to some extent, and the accuracy of the position coordinate data of the final bridge space displacement monitoring can be greatly improved by arranging the base station 120 near the GNSS measurement point. It should be noted that the base station 120 needs to be located at a fixed position near the GNSS measurement point, and for example, the base station 120 may be located on the ground around the GNSS measurement point or on a nearby pier. In addition, it is known from the bridge space displacement monitoring step that the base station 120 needs to sample according to a preset sampling frequency, because the data collected by the base station 120 may be affected by cloud layer changes, atmospheric changes, and the like, and the collected monitoring data may also change correspondingly, the sampling frequency of the base station 120 needs to be kept synchronous with the sampling frequency of the GNSS antenna 110 and the inclinometer 130, so as to ensure that the data used in the subsequent calculation is data at the same time. Referring to fig. 1 again, preferably, in the present embodiment, the number of the base stations 120 is set to 4.
Further, the measurement direction of the inclinometer 130 is a transverse torsion angle direction of the bridge girder 100. Specifically, the inclinometer 130 may measure the inclination angle of the bridge in a preset direction. Because the present invention needs to realize the change data of the transverse torsional deformation of the bridge girder 100, the measurement direction of the inclinometer 130 is the direction of the transverse torsional angle of the bridge girder 100, the acquired angle value is the value of the transverse torsional deformation of the bridge girder 100, and the change of the angle value is the change of the torsion of the bridge girder 100. Specifically, the unit of angle is in radians.
In a preferred embodiment of the present invention, the data collected by the GNSS antenna 110 and the base station 120 includes one or more of data of the beidou, GPS, GLONASS, and GALILEO navigation systems. The GNSS antenna 110 and the base station 120 continuously acquire data of a satellite navigation system, which includes but is not limited to beidou, GPS, GLONASS, GALILEO, and preferably, the data acquired by the GNSS antenna 110 and the base station 120 in this embodiment is data of the GPS navigation system.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A bridge space displacement monitoring method is characterized by comprising the following steps:
sampling first monitoring data acquired by a GNSS antenna according to a preset sampling frequency; the GNSS antenna is arranged at a GNSS survey point of the bridge;
sampling the inclination data collected by the inclinometer according to the preset sampling frequency; the inclinometer and the GNSS antenna are oppositely arranged on two sides of a preset section of the bridge girder; the measuring direction of the inclinometer is the transverse torsion angle direction of the bridge girder;
sampling second monitoring data acquired by the base station according to the preset sampling frequency; wherein the base station is arranged at a fixed position near the GNSS measuring point;
resolving the first monitoring data and the second monitoring data to obtain position coordinate change data of the GNSS measuring point (X, Y, Z);
calculating position change data (X, Y, Z) of the GNSS measuring points and the inclination data according to a preset algorithm to obtain position coordinate change data (X ', Y ' and Z ') of the inclinometer;
wherein the preset algorithm is as follows: x ' = X, Y ' = Y, Z ' = Z + L × sin β; wherein L is a horizontal distance between the GNSS measuring point and the inclinometer, and β is a measurement value of the inclinometer.
2. The method for monitoring the spatial displacement of the bridge according to claim 1, further comprising the steps of:
judging whether an automatic alarm triggering condition is met or not according to whether the position coordinate change data (X, Y, Z) of the GNSS measuring point and/or the position coordinate change data (X ', Y ', Z ') of the inclinometer exceed a preset threshold or not;
when at least one of the position coordinate change data (X, Y, Z) of the GNSS measuring point and/or the position coordinate change data (X ', Y ', Z ') of the inclinometer exceeds the preset threshold, judging that an automatic alarm triggering condition is met, and executing a preset automatic alarm instruction;
and when the position coordinate change data (X, Y, Z) of the GNSS measuring point and/or the position coordinate change data (X ', Y ', Z ') of the inclinometer do not exceed the preset threshold, judging that an automatic alarm triggering condition is not met, and maintaining the current state.
3. The method for monitoring the spatial displacement of the bridge according to claim 1, further comprising the steps of: and performing algorithm correction on the position coordinate change data (X, Y, Z) and the inclination angle data.
4. The method for monitoring the spatial shift of the bridge according to claim 3, wherein the algorithm correction comprises one or more of filtering and removing abnormal values.
5. The method for monitoring the spatial displacement of the bridge according to claim 1, wherein the preset sampling frequency is not lower than 10Hz.
6. The method for monitoring the spatial shift of the bridge according to claim 1, wherein the first monitoring data collected by the GNSS antenna includes one or more of beidou, GPS, GLONASS, GALILEO navigation system data.
7. A bridge space deflection monitoring system comprises a bridge space deflection monitoring device and a control system arranged on the bridge space deflection monitoring device, wherein the control system comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor; the processor, when executing the computer program, implements the steps of the bridge space displacement monitoring method according to any one of claims 1 to 6.
8. A readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of the bridge space shift monitoring method according to any one of claims 1 to 6.
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| CN113983954B (en) * | 2021-10-19 | 2023-08-11 | 中铁大桥科学研究院有限公司 | Method and device for measuring bridge deck line shape |
| CN113916179B (en) * | 2021-12-15 | 2022-04-12 | 北京讯腾智慧科技股份有限公司 | Highway and railway dual-purpose bridge line shape automatic measurement system and method |
| CN116067434B (en) * | 2023-03-07 | 2023-07-04 | 中铁大桥局集团有限公司 | Visual installation system and method for large-section bridge |
| CN116991108B (en) * | 2023-09-25 | 2023-12-12 | 四川公路桥梁建设集团有限公司 | Intelligent management and control method, system and device for bridge girder erection machine and storage medium |
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| KR101922176B1 (en) * | 2017-03-02 | 2018-11-26 | 인천대학교 산학협력단 | Measuring Method Of Structure Performance of A Bridge |
| CN211698207U (en) * | 2019-01-29 | 2020-10-16 | 北京讯腾智慧科技股份有限公司 | Railway bridge deformation monitoring system based on big dipper and multisensor |
| CN211285734U (en) * | 2019-11-12 | 2020-08-18 | 北京江云智能科技有限公司 | Intelligent deformed pile monitoring device |
| CN111561903B (en) * | 2020-07-14 | 2020-10-30 | 北京讯腾智慧科技股份有限公司 | Bridge deformation monitoring system and method |
| CN213061694U (en) * | 2020-07-20 | 2021-04-27 | 中铁大桥科学研究院有限公司 | Bridge space linear detection device based on fixed guide rail |
| CN215447745U (en) * | 2021-11-04 | 2022-01-07 | 北京瑞威工程检测有限公司 | Monitoring system for tunnel exit side slope |
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