Cable-stayed bridge tower deformation monitoring system based on Beidou navigation
By setting up the monitoring point unit and reference station of the Beidou navigation system on the cable-stayed bridge tower, three-dimensional displacement monitoring of the cable-stayed bridge tower is realized, solving the problem of insufficient accuracy of traditional monitoring methods and the inability to achieve all-weather continuous automatic monitoring. Suitable for deformation monitoring of cable-stayed bridges on large-span railways.
Patent Information
- Application Number
- CN202323496721.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-20
AI Technical Summary
It is difficult for the prior art to monitor the deformation of cable-stayed bridge towers in real time, especially in the case of long construction periods and great impact of climate change, the traditional method is insufficient in accuracy and cannot achieve all-weather continuous automatic monitoring.
The deformation monitoring system of cable-stayed bridge tower based on Beidou navigation is adopted, and the cable-stayed bridge tower body is set up through the Beidou reference station and three monitoring point units. The Beidou GNSS antenna and communication antenna are used to collect and calibrate data to achieve The three-dimensional displacement of the cable-stayed bridge tower is monitored, and data is transmitted to the data monitoring center through the 4G network for real-time processing and monitoring.
It realizes all-weather continuous automatic observation of cable-stayed bridge towers, improves monitoring accuracy and reliability, reduces manpower demand, and is suitable for the deformation monitoring needs of cable-stayed bridges on large-span railways.
Smart Images
Figure CN222144080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge tower monitoring, and in particular to a deformation monitoring system for a cable-stayed bridge tower based on Beidou navigation. Background Art
[0002] With the development of the rail transit industry, my country's demand for bridge spans is getting higher and higher. Cable-stayed bridges have become the preferred option for large-span bridges due to their beautiful appearance and strong spanning capacity. During the construction of cable-stayed bridges, in order to ensure the construction quality, the construction process needs to be scientifically monitored. Among them, since the stress conditions of the cable-stayed bridge towers are the most complex, and the towers of large-span railway cable-stayed bridges are high and the construction period is long, seasonal climate changes and meteorological disasters such as cold waves and heat waves will have a great impact on the construction line of the cable-stayed bridge towers. Therefore, real-time deformation monitoring of the bridge towers is particularly important.
[0003] At present, my country's BeiDou Navigation System (BDS) has been widely used in the fields of geodesy, natural disaster monitoring and engineering monitoring. The BeiDou system has also been applied and developed in bridge deformation monitoring, but its application in the deformation monitoring of railway cable-stayed bridge towers is relatively lacking. The traditional monitoring method relies on manpower to carry total stations and other distance measuring equipment, and prisms need to be installed on the bridge towers. For bridge towers with a long construction period, prism loss, climate change and human factors have a greater impact on the monitoring results. The observation accuracy is insufficient and real-time monitoring cannot be achieved, making it difficult to effectively monitor the health status of the bridge towers in a timely manner.
[0004] In view of this, it is necessary to propose a cable-stayed bridge tower deformation monitoring system based on Beidou navigation to solve or at least alleviate the above defects. Utility Model Content
[0005] The main purpose of the utility model is to provide a deformation monitoring system for a cable-stayed bridge tower based on Beidou navigation, aiming to solve the technical problem that it is difficult to monitor the bridge tower in real time in the prior art.
[0006] To achieve the above-mentioned purpose, the utility model provides a deformation monitoring system for a cable-stayed bridge tower based on Beidou navigation, comprising a Beidou reference station, a railway cable-stayed bridge tower body and three monitoring point units, the tower top of the railway cable-stayed bridge tower body having a first monitoring point position, the tower body of the cable-stayed bridge tower body having a second monitoring point position and a third monitoring point position, the first monitoring point position, the second monitoring point position and the third monitoring point position are respectively provided with monitoring point units; the monitoring point unit comprises a monitoring Beidou GNSS antenna, a monitoring communication antenna, a monitoring antenna mounting pole, a monitoring receiver and a monitoring power supply, the monitoring antenna mounting pole is fixed It is installed on the tower of the railway cable-stayed bridge, and the monitoring Beidou GNSS antenna is installed on the monitoring antenna mounting pole. The monitoring Beidou GNSS antenna and the monitoring communication antenna are respectively connected to the monitoring receiver for communication, and the monitoring power supply is used to supply power to the monitoring receiver. The Beidou reference station includes a reference Beidou GNSS antenna, a reference communication antenna, a reference antenna mounting pole, a reference receiver and a reference power supply. The reference Beidou GNSS antenna is installed on the reference antenna mounting pole. The reference Beidou GNSS antenna and the reference communication antenna are respectively connected to the monitoring receiver for communication, and the monitoring power supply is used to supply power to the monitoring receiver.
[0007] Furthermore, the tower body of the railway cable-stayed bridge is arranged in a right triangle, the top surface of the tower body of the railway cable-stayed bridge is a plane, the monitoring antenna mounting rod of the monitoring point unit at the top of the tower body of the railway cable-stayed bridge is a vertical extension rod, the bottom end of the vertical extension rod is fixed on the top of the tower, and the monitoring Beidou GNSS antenna is arranged on the top of the vertical extension rod through threaded fitting.
[0008] Furthermore, the monitoring antenna mounting pole of the monitoring point unit located on the tower body of the railway cable-stayed bridge tower includes a triangular mounting frame and a vertical extension pole, the first end of the triangular mounting frame is fixed on the tower body of the railway cable-stayed bridge tower, the second end of the triangular mounting frame is horizontally cantilevered outward, the vertical extension pole is vertically arranged on the second end of the triangular mounting frame, and the monitoring Beidou GNSS antenna is arranged on the monitoring antenna mounting pole through threaded fitting.
[0009] Furthermore, the triangular mounting frame is a right-angle mounting frame, a reinforcing rib is arranged inside the right-angle mounting frame, and the right-angle end of the right-angle mounting frame is fixedly connected to the tower body of the railway cable-stayed bridge tower body.
[0010] Furthermore, the first monitoring point, the second monitoring point and the third monitoring point are arranged in an isosceles triangle, and the distance between the first monitoring point and the second monitoring point is greater than the distance between the second monitoring point and the third monitoring point.
[0011] Furthermore, the second monitoring point is arranged close to the tower top, and the second monitoring point and the third monitoring point are arranged horizontally opposite to each other.
[0012] Furthermore, three monitoring receivers share one monitoring power supply, which is fixed on the tower body of the railway cable-stayed bridge and located between the three monitoring point units; or, the monitoring power supply of the monitoring point unit at the top of the tower body of the railway cable-stayed bridge is arranged close to the top of the tower and located on the inner wall surface of the tower body of the railway cable-stayed bridge, and the monitoring power supply of the monitoring point unit at the tower body of the railway cable-stayed bridge is arranged on the tower body and located on the inner wall surface of the tower body of the railway cable-stayed bridge.
[0013] Furthermore, the monitoring power supply includes a power supply battery and a solar power supply panel which is arranged separately from the tower body of the railway cable-stayed bridge, and the solar power supply panel and the power supply battery are electrically connected.
[0014] Furthermore, the reference antenna mounting pole includes a mounting column and an extended mounting pole. The bottom end of the mounting column is provided with a mounting flange. The top end of the mounting column is provided with a reference Beidou GNSS antenna through threaded fitting. The reference receiver is arranged on the outside of the mounting column.
[0015] Furthermore, the distance between the Beidou reference station and the railway cable-stayed bridge tower is 10 meters to 1000 meters.
[0016] Compared with the prior art, the cable-stayed bridge tower deformation monitoring system based on Beidou navigation provided by the utility model has the following beneficial effects:
[0017] The utility model provides a cable-stayed bridge tower deformation monitoring system based on Beidou navigation, comprising a Beidou reference station, a railway cable-stayed bridge tower body and three monitoring point units. The Beidou reference station is used as a basic station to calibrate Beidou data. The three monitoring point units are respectively arranged at a first monitoring point position, a second monitoring point position and a third monitoring point position of the railway cable-stayed bridge tower body. The Beidou data of each monitoring point unit is collected, calibrated and calculated by the method of the prior art, so that the deformation of the cable-stayed bridge tower can be monitored. Compared with the traditional monitoring of the deformation of the bridge tower, the all-weather continuous automatic observation of the deformation of the cable-stayed bridge tower is realized, which effectively makes up for the defect of the traditional bridge tower monitoring technology that requires a large amount of manpower. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0019] Figure 1 It is a structural schematic diagram of a cable-stayed bridge tower deformation monitoring system based on Beidou navigation in one embodiment of the utility model;
[0020] Figure 2 for Figure 1 The structural diagram at A in the middle;
[0021] Figure 3 for Figure 1 The structural diagram at B in the middle;
[0022] Figure 4 for Figure 1 Schematic diagram of the structure at C in the middle;
[0023] Figure 5 The present invention is a schematic diagram of the communication connection of a cable-stayed bridge tower deformation monitoring system based on Beidou navigation in one embodiment of the present invention.
[0024] Legend:
[0025] 100. Cable-stayed bridge tower deformation monitoring system based on Beidou navigation; 10. Beidou reference station; 11. Reference Beidou GNSS antenna; 12. Reference antenna mounting pole; 121. Mounting column; 122. Extension mounting pole; 20. Railway cable-stayed bridge tower; 30. Monitoring point unit; 31. Monitoring Beidou GNSS antenna; 32. Monitoring communication antenna; 33. Monitoring antenna mounting pole; 331. Triangle mounting frame; 332. Vertical extension pole; 34. Monitoring receiver; 35. Monitoring power supply.
[0026] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0027] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0031] Please refer to the attached Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 The utility model provides a Beidou navigation-based cable-stayed bridge tower deformation monitoring system 100, comprising a Beidou reference station 10, a railway cable-stayed bridge tower body 20 and three monitoring point units 30, the tower top of the railway cable-stayed bridge tower body 20 has a first monitoring point, the tower body of the cable-stayed bridge tower body has a second monitoring point and a third monitoring point, the first monitoring point, the second monitoring point and the third monitoring point are respectively provided with monitoring point units 30; the monitoring point unit 30 comprises a monitoring Beidou GNSS antenna 31, a monitoring communication antenna 32, a monitoring antenna mounting pole 33, a monitoring receiver 34 and a monitoring power supply 35, the monitoring antenna mounting pole 33 is fixedly arranged on the railway cable-stayed bridge On the tower body 20, the monitoring Beidou GNSS antenna 31 is arranged on the monitoring antenna mounting pole 33, the monitoring Beidou GNSS antenna 31 and the monitoring communication antenna 32 are respectively connected to the monitoring receiver 34 for communication, and the monitoring power supply 35 is used to supply power to the monitoring receiver 34. The Beidou reference station 10 includes a reference Beidou GNSS antenna 11, a reference communication antenna, a reference antenna mounting pole 12, a reference receiver and a reference power supply. The reference Beidou GNSS antenna 11 is arranged on the reference antenna mounting pole 12, the reference Beidou GNSS antenna 11 and the reference communication antenna are respectively connected to the monitoring receiver 34 for communication, and the monitoring power supply 35 is used to supply power to the monitoring receiver 34.
[0032] The utility model provides a Beidou navigation-based cable-stayed bridge tower deformation monitoring system 100, comprising a Beidou reference station 10, a railway cable-stayed bridge tower body 20 and three monitoring point units 30. The Beidou reference station 10 is used as a basic station for calibrating Beidou data. The three monitoring point units 30 are respectively arranged at a first monitoring point, a second monitoring point and a third monitoring point of the railway cable-stayed bridge tower body 20. The Beidou data of each monitoring point unit 30 is collected, calibrated and calculated by the method of the prior art, so that the deformation of the cable-stayed bridge tower can be monitored. Compared with the traditional monitoring of the deformation of the bridge tower, the all-weather continuous automatic observation of the deformation of the cable-stayed bridge tower is realized, which effectively makes up for the defect of the traditional bridge tower monitoring technology in requiring a large amount of manpower.
[0033] It can be understood that in the present invention, the monitoring Beidou GNSS antenna 31 and the monitoring communication antenna 32 can be respectively arranged on the monitoring antenna mounting pole 33. In order to reduce the vibration impact caused by the airflow and improve the accuracy of detection, the monitoring Beidou GNSS antenna 31 is arranged on the monitoring antenna mounting pole 33, and the monitoring communication antenna 32 is arranged on the tower body 20 of the railway cable-stayed bridge.
[0034] In the specific use of the Beidou navigation-based cable-stayed bridge tower deformation monitoring system 100 of the utility model, the Beidou reference station 10 is installed on the rooftop located in an area with stable geological conditions and an unobstructed surrounding environment; the second monitoring point and the third monitoring point are arranged at the tower columns on both sides of the railway cable-stayed bridge tower body 20, and the first monitoring point is installed at the top of the tower, and it is ensured that there are no obstructions around the monitoring Beidou GNSS antenna 31; integrated into the (communication antenna) 4G data transmission network and the data monitoring center, the bridge tower deformation data collected by the monitoring point unit 30 is transmitted to the data monitoring center via the 4G network, and the 4G data transmission network relies on the existing network of the communication operator to ensure Stable data transmission; the data monitoring center mainly processes and monitors deformation data based on the data of Beidou reference station 10. Users can monitor the deformation data of cable-stayed bridge towers in real time through the Web or mobile terminal; through the Beidou navigation system, the real-time three-dimensional relative displacement of Beidou reference station 10 and three monitoring point units 30 is collected, so as to realize high-precision three-dimensional displacement monitoring of cable-stayed bridge towers; combined with the 4G network, a data monitoring center is established to realize all-weather continuous automatic observation of cable-stayed bridge tower deformation. Users can view the deformation of bridge towers in real time through the Web or mobile terminal, which effectively makes up for the defect of traditional bridge tower monitoring technology in terms of large manpower demand. Due to the characteristics of large bridge tower height, long construction period, and difficult linear control of large-span railway cable-stayed bridge towers, the point position accuracy and time resolution requirements for deformation monitoring are relatively high. Compared with the traditional monitoring of bridge tower deformation, the data acquisition system of the utility model is more suitable for deformation monitoring of large-span railway cable-stayed bridge towers.
[0035] Please refer again Figure 1Furthermore, in order to ensure the accuracy of monitoring and reduce the amount of data processing, the railway cable-stayed bridge tower body 20 is arranged in a right triangle, the top surface of the railway cable-stayed bridge tower body 20 is a plane, and the monitoring antenna mounting rod 33 of the monitoring point unit 30 at the top of the railway cable-stayed bridge tower body 20 is a vertical extension rod 332, the bottom end of the vertical extension rod 332 is fixed on the top of the tower, and the monitoring Beidou GNSS antenna 31 is arranged on the top of the vertical extension rod 332 through threaded cooperation.
[0036] Please refer again Figure 3 Furthermore, the monitoring antenna mounting pole 33 of the monitoring point unit 30 located on the tower body of the railway cable-stayed bridge tower body 20 includes a triangular mounting frame 331 and a vertical extension pole 332. The first end of the triangular mounting frame 331 is fixed on the tower body of the railway cable-stayed bridge tower body 20, and the second end of the triangular mounting frame 331 is horizontally cantilevered outward. The vertical extension pole 332 is vertically arranged on the second end of the triangular mounting frame 331, and the monitoring Beidou GNSS antenna 31 is arranged on the monitoring antenna mounting pole 33 through threaded fitting.
[0037] It can be understood that in the present invention, the vertical extension rod 332 is arranged on the tower top surface of the railway cable-stayed bridge tower body 20 based on threaded cooperation; the first end of the triangular mounting frame 331 is fixed on the tower body of the railway cable-stayed bridge tower body 20 through threaded connection.
[0038] Furthermore, the triangular mounting frame 331 is a right-angle mounting frame, and a reinforcing rib is arranged inside the right-angle mounting frame, and the right-angle end of the right-angle mounting frame is fixedly connected to the tower body of the railway cable-stayed bridge tower body 20. In the present utility model, the reference receiver and the reference power supply of the monitoring point unit 30 located in the tower body of the railway cable-stayed bridge tower body 20 are accommodated in the right-angle mounting frame and are arranged close to the tower body, and the reference communication antenna is arranged on the outer wall surface of the right-angle mounting frame and is arranged close to the tower body.
[0039] Furthermore, the first monitoring point, the second monitoring point and the third monitoring point are arranged in an isosceles triangle, and the distance between the first monitoring point and the second monitoring point is greater than the distance between the second monitoring point and the third monitoring point.
[0040] Furthermore, the second monitoring point is arranged close to the tower top, and the second monitoring point and the third monitoring point are arranged horizontally opposite to each other.
[0041] Furthermore, the three monitoring receivers 34 share a monitoring power supply 35, which is fixed on the railway cable-stayed bridge tower body 20 and located between the three monitoring point units 30; or, the monitoring power supply 35 of the monitoring point unit 30 at the top of the railway cable-stayed bridge tower body 20 is arranged close to the top of the tower and located on the inner wall surface of the railway cable-stayed bridge tower body 20, and the monitoring power supply 35 of the monitoring point unit 30 at the tower body of the railway cable-stayed bridge tower body 20 is arranged on the tower body and located on the inner wall surface of the railway cable-stayed bridge tower body 20.
[0042] Furthermore, the monitoring power supply includes a power supply battery and a solar power supply panel which is arranged separately from the railway cable-stayed bridge tower body 20, and the solar power supply panel and the power supply battery are electrically connected.
[0043] Please refer to Figure 4 Further, the reference antenna mounting pole 12 includes a mounting column 121 and an extended mounting pole 122. The bottom end of the mounting column 121 is provided with a mounting flange. The top end of the mounting column 121 is provided with a reference Beidou GNSS antenna 11 through threaded matching. The reference receiver is arranged on the outside of the mounting column 121. In the present utility model, the reference Beidou GNSS antenna 11 and the reference communication antenna are respectively arranged on the extended mounting pole 122. In order to reduce the influence of vibration, the reference Beidou GNSS antenna 11 is arranged on the reference antenna mounting pole 12. The reference receiver, the reference power supply, and the reference communication antenna are arranged separately from the reference antenna mounting pole 12.
[0044] Furthermore, the distance between the BeiDou reference station 10 and the tower of the railway cable-stayed bridge is 10 meters to 1000 meters. It can be understood that the closer the BeiDou reference station 10 is arranged, the better. Generally, the reference station is installed a few hundred meters near the tower of the railway cable-stayed bridge, and an open environment is selected for arrangement within a distance of 10 meters to 1000. The closer the distance, the higher the accuracy.
[0045] Please refer to Figure 5 The monitoring Beidou GNSS antenna 31 and the monitoring communication antenna 32 are respectively connected to the monitoring receiver 34 for communication, and the monitoring power supply 35 is electrically connected to the monitoring receiver 34 .
[0046] Specifically, in the utility model, the monitoring receiver 34 is an AK6X dual-frequency receiver, which can simultaneously receive satellite signals of dual frequencies and process and solve the signals, so as to accurately calculate the position and time information of the monitoring point unit 30, and can ensure the reliability of the measurement results; three interfaces are provided, one interface is connected to the monitoring Beidou GNSS antenna 31 through a signal transmission line, one interface is connected to the 4G antenna (monitoring communication antenna 32), and the other interface is connected to the monitoring power supply 35; by setting the monitoring power supply 35 as an independent power supply, the stability of the power supply of the monitoring receiver 34 is ensured.
[0047] Specifically, referring to the Beidou GNSS antenna 11, the extended mounting rod 122 and the mounting column 121, they are bolted in pairs, which can not only facilitate installation and disassembly, but also ensure the rigidity and stability of the fixing device. At the same time, they have a certain height to avoid obstruction from the surrounding environment, thereby ensuring the stability of data collection and transmission; the triangular mounting frame 331 is fixedly set on the outer edge of the tower body, and the vertical extension rod 332 and the triangular mounting frame 331 are welded.
[0048] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A cable-stayed bridge tower deformation monitoring system based on Beidou navigation, characterized in that: It comprises a Beidou reference station, a railway cable-stayed bridge tower body and three monitoring point units, wherein the top of the railway cable-stayed bridge tower body has a first monitoring point, the tower body of the cable-stayed bridge tower body has a second monitoring point and a third monitoring point, and the first monitoring point, the second monitoring point and the third monitoring point are respectively provided with the monitoring point units; The monitoring point unit includes a monitoring Beidou GNSS antenna, a monitoring communication antenna, a monitoring antenna mounting pole, a monitoring receiver and a monitoring power supply. The monitoring antenna mounting pole is fixedly mounted on the tower body of the railway cable-stayed bridge. The monitoring Beidou GNSS antenna is mounted on the monitoring antenna mounting pole. The monitoring Beidou GNSS antenna and the monitoring communication antenna are respectively connected to the monitoring receiver for communication. The monitoring power supply is used to supply power to the monitoring receiver. The Beidou reference station includes a reference Beidou GNSS antenna, a reference communication antenna, a reference antenna mounting pole, a reference receiver and a reference power supply. The reference Beidou GNSS antenna is arranged on the reference antenna mounting pole. The reference Beidou GNSS antenna and the reference communication antenna are respectively communicatively connected to the monitoring receiver. The monitoring power supply is used to supply power to the monitoring receiver.
2. The cable-stayed bridge tower deformation monitoring system based on Beidou navigation according to claim 1 is characterized in that: The tower body of the railway cable-stayed bridge is arranged in a right triangle, and the tower top surface of the tower body of the railway cable-stayed bridge is a plane. The monitoring antenna mounting rod of the monitoring point unit at the top of the tower body of the railway cable-stayed bridge is a vertical extension rod, the bottom end of the vertical extension rod is fixed on the top of the tower, and the monitoring Beidou GNSS antenna is arranged on the top of the vertical extension rod through threaded fitting.
3. The cable-stayed bridge tower deformation monitoring system based on Beidou navigation according to claim 2 is characterized in that: The monitoring antenna mounting pole of the monitoring point unit located on the tower body of the railway cable-stayed bridge tower body includes a triangular mounting frame and a vertical extension pole, the first end of the triangular mounting frame is fixedly arranged on the tower body of the railway cable-stayed bridge tower body, the second end of the triangular mounting frame is horizontally cantilevered outward, the vertical extension pole is vertically arranged on the second end of the triangular mounting frame, and the monitoring Beidou GNSS antenna is arranged on the monitoring antenna mounting pole through threaded fitting.
4. The cable-stayed bridge tower deformation monitoring system based on Beidou navigation according to claim 3 is characterized in that: The triangular mounting frame is a right-angle mounting frame, and reinforcing ribs are arranged inside the right-angle mounting frame. The right-angle end of the right-angle mounting frame is fixedly connected to the tower body of the railway cable-stayed bridge tower body.
5. The cable-stayed bridge tower deformation monitoring system based on Beidou navigation according to any one of claims 1 to 4, characterized in that: The first monitoring point, the second monitoring point and the third monitoring point are arranged in an isosceles triangle, and the distance between the first monitoring point and the second monitoring point is greater than the distance between the second monitoring point and the third monitoring point.
6. The cable-stayed bridge tower deformation monitoring system based on Beidou navigation according to claim 5 is characterized in that: The second monitoring point is arranged close to the tower top, and the second monitoring point and the third monitoring point are arranged horizontally opposite to each other.
7. The cable-stayed bridge tower deformation monitoring system based on Beidou navigation according to any one of claims 1 to 4, characterized in that: The three monitoring receivers share one monitoring power supply, and the monitoring power supply is fixedly arranged on the tower of the railway cable-stayed bridge and is located between the three monitoring point units; or, The monitoring power supply of the monitoring point unit at the tower top of the railway cable-stayed bridge tower is arranged close to the tower top and on the inner wall surface of the railway cable-stayed bridge tower. The monitoring power supply of the monitoring point unit located in the tower body of the railway cable-stayed bridge tower is arranged on the tower body and on the inner wall surface of the railway cable-stayed bridge tower body.
8. The cable-stayed bridge tower deformation monitoring system based on Beidou navigation according to claim 7 is characterized in that: The monitoring power supply includes a power supply battery and a solar power supply panel which is arranged separately from the tower body of the railway cable-stayed bridge, and the solar power supply panel is electrically connected to the power supply battery.
9. The cable-stayed bridge tower deformation monitoring system based on Beidou navigation according to any one of claims 1 to 4, characterized in that: The reference antenna mounting rod comprises a mounting column and an extended mounting rod, the bottom end of the mounting column is provided with a mounting flange, and the top end of the mounting column is provided with the reference Beidou GNSS antenna through threaded fitting. The reference receiver is arranged on the outer side of the mounting column.
10. The cable-stayed bridge tower deformation monitoring system based on Beidou navigation according to any one of claims 1 to 4, characterized in that: The distance between the Beidou reference station and the railway cable-stayed bridge tower is 10 meters to 1000 meters.