Monitoring device and monitoring method for swivel beam of double-amplitude rigid frame bridge

Abstract

The invention discloses a monitoring device and a monitoring method for a double-amplitude rigid frame bridge swivel beam in the technical field of swivel beam monitoring, the monitoring device comprises a rotary traction seat and a rotary supporting seat, the rotary supporting seat is fixedly arranged at the lower end of a bridge supporting stand column of a rigid frame bridge, 360-degree prisms are installed at the end positions of the two sides of the upper portion of the rigid frame bridge, and the 360-degree prisms are connected with the rotary traction seat. An angular displacement sensor is installed at the position, coaxial with the rotating supporting base, of the upper plane of the rigid frame bridge, and a first universal gradienter and a second universal gradienter are symmetrically arranged on the two sides of the angular displacement sensor in the length direction of the rigid frame bridge. According to the swivel beam monitoring device, on the basis that the total station and the 360-degree prism are arranged, the universal gradienter and the angular displacement sensor are further arranged in a matched mode, the universal gradienter is matched with the visual camera, whether the upper plane of a rigid frame bridge is in a horizontal state or not in the swivel process can be monitored, and the swivel beam can be monitored. The angular displacement sensor can monitor whether the rotation angle of the upper plane of the rigid frame bridge is consistent with the rotation angle of the rotary supporting seat or not.

Description

Technical Field

[0001] The invention belongs to the technical field of swivel beam monitoring, and in particular, relates to a monitoring device and a monitoring method for a swivel beam of a double-span rigid frame bridge. Background Art

[0002] A rigid frame bridge refers to a bridge structure in which the span structure and the piers are integrally connected, while a double span refers to a rigid frame bridge structure consisting of two side-by-side bridges with separate lanes for incoming and outgoing traffic. A swivel beam is a special bridge construction technology that is mainly used when constructing bridges near railways, highways or other important traffic routes. In order to avoid interference with existing traffic routes during construction, the bridge structure is rotated during construction from a position perpendicular to the traffic route to the designed position, thereby achieving smooth closure of the bridge and keeping the traffic route unobstructed. This technology is particularly suitable for bridge construction above busy traffic routes because it can significantly reduce the impact of construction on traffic while ensuring construction safety and efficiency.

[0003] During the current bridge rotation construction, a system dedicated to monitoring the bridge rotation mechanism is often required to calculate the actual value and deviation of the rotation and the subsequent correction work. When monitoring the rotation mechanism, the operation range of the rotation is too large, and the stress and deformation at the root of the beam and the self-weight deflection of the beam will cause the rotation to produce vertical displacement and translational displacement. It is difficult to automatically measure and calculate the resulting offset, which reduces the stability of the monitoring system and the accuracy of the monitoring value. Application No.: CN202410605444.1 discloses a rotation measurement and control system and its measurement and control method for a rotating bridge. In the formal rotation stage, the angle to be rotated, the arc length to be rotated, the angular velocity, the linear velocity and the longitudinal and lateral directions are obtained in real time. The accumulated value of inclination is used to comprehensively and efficiently evaluate the state of the bridge and adjust the corresponding power system. After the rotation, a posture fine-tuning measurement and control scheme is set up to guide the adjustment of the bridge eccentricity with the accumulated values ​​of the longitudinal and lateral inclinations. The monitoring process mainly uses the total station and the 360° prism to collect data, and then uses the calculation module to analyze, calculate and share the data. This scheme has a certain measurement and control effect in actual use, but in the actual construction process, there will be a slight tilt of the beam in the length direction or the width direction. The analysis and calculation only rely on the detection data of the total station. The calculation workload is large, and it is impossible to adjust and compensate for the calculation error and measurement error. It takes a long time to adjust during the docking process. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a monitoring device and a monitoring method for a rotating beam of a double-span rigid frame bridge. To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is:

[0005] A monitoring device and a monitoring method for a rotating beam of a double-span rigid frame bridge, comprising a rotating traction seat and a rotating support seat, wherein the rotating support seat is fixedly arranged at the lower end of a bridge support column of the rigid frame bridge, 360° prisms are installed at the ends of both sides of the upper part of the rigid frame bridge, an angular displacement sensor is installed at the coaxial position of the upper plane of the rigid frame bridge and the rotating support seat, a universal level 1 and a universal level 2 are symmetrically arranged on both sides of the angular displacement sensor along the length direction of the rigid frame bridge, and visual cameras are respectively arranged above the universal level 1 and the universal level 2 One and two visual cameras, a main control console is arranged on the side of the rotating traction station, a mobile frame is arranged on the side of the main control console, a total station is installed on the mobile frame, a test stand one and a test stand two are symmetrically arranged at both ends of the bottom surface of the rigid frame bridge, a fixed connecting plate is fixedly arranged on the upper ends of the test stand one and the test stand two, the fixed connecting plate is fixedly connected to the bottom surface of the rigid frame bridge, ranging patches are fixedly installed on the surfaces of the test stand one and the test stand two corresponding to the bridge support columns, and rangefinders are correspondingly installed on the bridge support columns.

[0006] As a further solution of the present invention: four ranging patches are provided on the test stand 1 and the test stand 2, and the positions and quantities of the ranging patches correspond one to one with the rangefinder. The rangefinder cooperates with the ranging patches to monitor whether there is inclination between the rigid frame bridge and the bridge support column.

[0007] As a further solution of the present invention: an electric telescopic rod is fixedly installed on the mobile frame, a lifting platform is provided at the upper end of the electric telescopic rod, a rotating seat is fixedly installed on the lifting platform, a mounting plate is rotatably connected to the rotating seat, the total station is fixedly installed on the mounting plate, and the total station is used for monitoring in coordination with the 360° prism.

[0008] As a further solution of the present invention: a bearing is installed in the rotating seat to facilitate the angle adjustment of the total station, a moving wheel with a self-locking structure is arranged under the mobile frame, the support column above the moving wheel is an adjustable telescopic structure, and a level detector is installed on the mobile frame at a position on the side of the electric telescopic rod for adjusting the horizontal condition of the mobile frame.

[0009] As a further solution of the present invention: four 360° prisms are provided, and a mounting base is provided below the 360° prism. The mounting base is a U-shaped basket structure, which is clamped on the edges on both sides of the rigid frame bridge and locked and fixed by fixing screws.

[0010] As a further solution of the present invention: the monitoring bracket 1 and the monitoring bracket 2 are both Z-shaped structures, the visual camera 1 is located directly above the gimbal level 1, and the visual camera 2 is located directly above the gimbal level 2, and the changes of the gimbal level are monitored and observed by the visual cameras.

[0011] As a further solution of the present invention: moving wheels are arranged under the main control console to facilitate movement of the position, and the main control console, the total station, the visual camera 1, the visual camera 2, and the rangefinder are all electrically connected to an external power supply.

[0012] As a further solution of the present invention: the main control console is equipped with a wireless signal transceiver for receiving inspection data from the total station, the visual camera 1, the visual camera 2, and the rangefinder.

[0013] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0014] The swivel beam monitoring device of the present invention is provided with a set of universal level and angular displacement sensor in addition to the total station and 360° prism. The universal level cooperates with the visual camera to monitor whether the upper plane of the rigid frame bridge is in a horizontal state during the swivel process. The angular displacement sensor can monitor whether the rotation angle of the upper plane of the rigid frame bridge is consistent with the rotation angle of the swivel support seat.

[0015] The present invention is provided with test vertical plates at both ends of the bottom surface of the rigid frame bridge, and rangefinders are matchedly provided at both sides of the supporting columns of the rigid frame bridge. The distance between the rangefinder and the test vertical plates is detected to judge whether the rigid frame bridge is tilted. A group of four rangefinders is provided. According to the detection results of the four rangefinders, the tilt state of the rigid frame bridge can be judged, and then the counterweight is added for compensation to ensure the construction accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a front view of the present invention;

[0018] Figure 3 is a side view of the present invention;

[0019] Figure 4 It is a schematic diagram of the installation of the 360° prism of the present invention;

[0020] Figure 5 It is a schematic diagram of installation of the rangefinder of the present invention;

[0021] Figure 6 This is a connection block diagram of some components of the present invention.

[0022] In the figure: 1. Rotating traction seat; 2. Rotating support seat; 3. Main control console; 4. Mobile frame; 5. Electric telescopic rod; 6. Lifting platform; 7. Rotating seat; 8. Mounting plate; 9. Total station; 10. Level detector; 11. 360° prism; 12. Mounting bracket; 13. Fixing screws; 14. Monitoring bracket one; 15. Visual camera one; 16. Universal level one; 17. Angular displacement sensor; 18. Monitoring bracket two; 19. Visual camera two; 20. Universal level two; 21. Fixed connecting plate; 22. Test stand one; 23. Distance measuring patch; 24. Distance meter; 25. Test stand two. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0024] like Figures 1 to 6 As shown, a monitoring device and a monitoring method for a rotating beam of a double-span rigid frame bridge include a rotating traction seat 1 and a rotating support seat 2, wherein the rotating support seat 2 is fixedly arranged at the lower end of the bridge support column of the rigid frame bridge, 360° prisms 11 are installed at the ends of both sides of the upper part of the rigid frame bridge, an angular displacement sensor 17 is installed at the coaxial position of the upper plane of the rigid frame bridge and the rotating support seat 2, a universal level 16 and a universal level 20 are symmetrically arranged on both sides of the angular displacement sensor 17 along the length direction of the rigid frame bridge, and a visual camera 1 is correspondingly arranged above the universal level 16 and the universal level 20. 5 and visual camera 2 19, a main control console 3 is arranged on the side of the rotating traction station, a mobile frame 4 is arranged on the side of the main control console 3, a total station 9 is installed on the mobile frame 4, a test stand 1 22 and a test stand 2 25 are symmetrically arranged at both ends of the bottom surface of the rigid frame bridge, a fixed connecting plate 21 is fixedly arranged on the upper ends of the test stand 1 22 and the test stand 2 25, the fixed connecting plate 21 is fixedly connected to the bottom surface of the rigid frame bridge, a distance measuring patch 23 is fixedly installed on the surface of the test stand 1 22 and the test stand 25 corresponding to the bridge support column, and a distance meter 24 is correspondingly installed on the bridge support column.

[0025] Among them, there are four ranging patches 23 on the test stand 1 22 and the test stand 2 25. The positions and quantities of the ranging patches 23 and the rangefinders 24 correspond one to one. The rangefinder 24 cooperates with the ranging patches 23 to monitor whether there is inclination between the rigid frame bridge and the bridge support column.

[0026] An electric telescopic rod 5 is fixedly installed on the mobile frame 4, a lifting platform 6 is arranged on the upper end of the electric telescopic rod 5, a rotating seat 7 is fixedly installed on the lifting platform 6, a mounting plate 8 is rotatably connected to the rotating seat 7, and a total station 9 is fixedly set on the mounting plate 8. The total station 9 is used for monitoring in conjunction with the 360° prism 11.

[0027] A bearing is installed in the rotating seat 7 to facilitate the angle adjustment of the total station 9. A moving wheel with a self-locking structure is arranged below the mobile frame 4. The support column above the moving wheel is an adjustable telescopic structure. The support column is two sleeved tubular structures. A level detector 10 is installed on the mobile frame 4 at the side of the electric telescopic rod 5 for adjusting the level of the mobile frame 4.

[0028] Four 360° prisms 11 are provided, and a mounting base 12 is provided below the 360° prism 11 . The mounting base 12 is a U-shaped basket structure, which is clamped on the edges of both sides of the rigid frame bridge and is locked and fixed by fixing screws 13 .

[0029] Monitoring bracket 14 and monitoring bracket 2 18 are both Z-shaped structures. Visual camera 1 15 is located directly above universal level 16, and visual camera 2 19 is located directly above universal level 20. Changes of the universal level are monitored and observed through the visual cameras.

[0030] Moving wheels are provided below the main control console 3 to facilitate moving the position. The main control console 3, the total station 9, the visual camera 1 15, the visual camera 2 19, and the rangefinder 24 are all electrically connected to an external power supply.

[0031] The main control console 3 is equipped with a wireless signal transceiver for receiving inspection data from the total station 9, the visual camera 1 15, the visual camera 2 19, and the rangefinder 24.

[0032] The working principle of the present invention is as follows: first, a rotating support seat 2 and a rotating traction seat 1 are installed on the supporting piers of the rigid frame bridge, and a 360° prism 11 is installed at the two end positions of the rigid frame bridge. A universal level 16, a universal level 20, a monitoring bracket 14 and a monitoring bracket 2 18 are fixedly installed on the plane of the rigid frame bridge respectively. Then, a test stand 1 22 and a test stand 25 are symmetrically installed at both ends of the bottom surface of the rigid frame bridge, and a distance meter 24 is installed on the supporting pier at a position corresponding to the distance measuring patch 23 on the test stand 1 22 and the test stand 25. Then, the circuit and line are connected, and the preparation work for construction monitoring is done. Before the rotation, the preparation work such as weighing, counterweighting, and trial rotation will be carried out to ensure the smooth progress of the rotation process and the safety of the bridge.

[0033] The bridge body is rotated by using jacks and other equipment according to the millimeter error standard. During the rotation process, the speed and angle of the rotation need to be accurately controlled to ensure that the bridge can be accurately docked to the predetermined position. During the rotation process, the total station 9 cooperates with the 360° prism 11, and the observation data: slant distance, zenith distance, horizontal angle, etc. can be automatically displayed, and the horizontal distance, height difference and point coordinates can be obtained almost at the same time. The total station 9 is connected to the main control console 3 through the transmission interface. The main control console 3 is provided with a data processing module, a data storage module, a display module, and a parameter input module to monitor the rotation angle, the linear speed of the rotation, and the angular speed of the rotation;

[0034] For the inclination of the rigid frame bridge, the total station 9 will perform cumulative calculations based on the collected data, but there is a certain cumulative calculation error. The monitoring device uses the universal level 16 and the universal level 20 to intuitively monitor the horizontal inclination of the rigid frame bridge deck. The settings of the visual camera 15 and the visual camera 2 19 can intuitively view the results through the camera's monitoring screen; the settings of the rangefinder 24 and the rangefinder patch 23 can monitor the distance changes between the supporting piers of the rigid frame bridge and the test stand 1 22 and the test stand 25. According to the changes in the inspection data, the inclination of the rigid frame bridge relative to the supporting piers is calculated and compared with the calculation results of the total station 9 to ensure the monitoring accuracy, filter out abnormal data, take the average value, and perform corresponding weight compensation and rotation compensation;

[0035] An angular displacement sensor 17 coaxial with the rotating support seat 2 is provided on the upper plane of the rigid frame bridge to monitor the rotation of the rigid frame bridge. The inspection result of the angular displacement sensor 17 is compared with the rotation angle of the rotating support seat 2 to monitor whether there is a relative displacement between the bridge deck and the supporting piers of the rigid frame bridge.

[0036] The swivel beam monitoring device of the present invention is provided with a set of universal level and angular displacement sensor 17 on the basis of the total station 9 and the 360° prism 11. The universal level and the visual camera can be used to monitor whether the upper plane of the rigid frame bridge is in a horizontal state during the swivel process. The angular displacement sensor 17 can monitor whether the rotation angle of the upper plane of the rigid frame bridge is consistent with the rotation angle of the swivel support seat 2. Test vertical plates are provided at both ends of the bottom surface of the rigid frame bridge. Distance meters 24 are provided on both sides of the supporting columns of the rigid frame bridge. The distance between the distance meter 24 and the test vertical plates can be used to determine whether the rigid frame bridge is tilted. A set of four distance meters 24 is provided. According to the detection results of the four distance meters 24, the tilt state of the rigid frame bridge can be determined, and then the counterweight can be added for compensation to ensure the construction accuracy. The multi-directional and multi-faceted monitoring method can ensure the accuracy of the monitoring results.

[0037] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A monitoring device for a double-width rigid frame bridge swivel beam, comprising a swivel traction seat and a swivel support seat, characterized in that: The rotating support seat is fixedly arranged at the lower end of the bridge support column of the rigid frame bridge, 360° prisms are installed at the ends of both sides of the upper part of the rigid frame bridge, an angular displacement sensor is installed at the coaxial position of the upper plane of the rigid frame bridge and the rotating support seat, a universal level 1 and a universal level 2 are symmetrically arranged on both sides of the angular displacement sensor along the length direction of the rigid frame bridge, and a visual camera 1 and a visual camera 2 are respectively arranged above the universal level 1 and the universal level 2, a main control console is arranged on the side of the rotating traction station, a mobile frame is arranged on the side of the main control console, and a total station is installed on the mobile frame, a test stand 1 and a test stand 2 are symmetrically arranged at both ends of the bottom surface of the rigid frame bridge, and a fixed connecting plate is fixedly arranged on the upper ends of the test stand 1 and the test stand 2, and the fixed connecting plate is fixedly connected to the bottom surface of the rigid frame bridge, and a distance measuring patch is fixedly installed on the surface of the test stand 1 and the test stand 2 corresponding to the bridge support column, and a distance meter is correspondingly installed on the bridge support column.

2. The monitoring device for a double-span rigid frame bridge swivel beam according to claim 1, characterized in that: There are four ranging patches on each of the test stand 1 and the test stand 2, and the positions and quantities of the ranging patches correspond one to one with the rangefinder.

3. The monitoring device for a double-width rigid frame bridge swivel beam according to claim 2, characterized in that: An electric telescopic rod is fixedly mounted on the mobile frame, a lifting platform is arranged at the upper end of the electric telescopic rod, a rotating seat is fixedly mounted on the lifting platform, a mounting plate is rotatably connected to the rotating seat, and the total station is fixedly mounted on the mounting plate.

4. The monitoring device for a double-span rigid frame bridge swivel beam according to claim 3, characterized in that: A bearing is installed in the rotating seat, a moving wheel with a self-locking structure is arranged below the moving frame, the support column above the moving wheel is an adjustable telescopic structure, and a level detector is installed on the moving frame at a position on the side of the electric telescopic rod.

5. The monitoring device for a double-span rigid frame bridge swivel beam according to claim 4, characterized in that: There are four 360° prisms, and a mounting base is provided below the 360° prism. The mounting base is a U-shaped basket structure and is locked and fixed by fixing screws.

6. The monitoring device for a rotating beam of a double-span rigid frame bridge according to claim 5, characterized in that: The monitoring bracket 1 and the monitoring bracket 2 are both Z-shaped structures, the visual camera 1 is located directly above the universal level 1, and the visual camera 2 is located directly above the universal level 2.

7. The monitoring device for a rotating beam of a double-span rigid frame bridge according to claim 6, characterized in that: Moving wheels are arranged below the main control console, and the main control console, the total station, the visual camera 1, the visual camera 2, and the rangefinder are all electrically connected to an external power supply.

8. The monitoring device for a rotating beam of a double-span rigid frame bridge according to claim 7, characterized in that: The main control console is equipped with a wireless signal transceiver.

9. A monitoring method for a double-span rigid frame bridge swivel beam, using a monitoring device for a double-span rigid frame bridge swivel beam according to claims 1 to 8, characterized in that: First, install the rotating support seat and rotating traction seat on the supporting piers of the rigid frame bridge, install the 360° prism at the two end positions on the rigid frame bridge, and fix the universal level 1, universal level 2, monitoring bracket 1 and monitoring bracket 2 on the plane of the rigid frame bridge. Then, install the test stand 1 and test stand 2 symmetrically at both ends of the bottom surface of the rigid frame bridge, and install the distance meter on the supporting pier at the position corresponding to the distance measuring patch on the test stand 1 and test stand 2. Then, connect the circuit and line, and make preparations for construction monitoring. Before the rotation, preparatory work such as weighing and counterweighting, trial rotation, etc. will be carried out to ensure the smooth progress of the rotation process and the safety of the bridge. The bridge body is rotated by jacks and other equipment according to the millimeter error standard. During the rotation process, the speed and angle of the rotation need to be precisely controlled to ensure that the bridge can be accurately docked at the predetermined position. During the rotation process, the total station cooperates with the 360° edge, and the observation data: slant distance, zenith distance, horizontal angle, etc. can be automatically displayed, and the horizontal distance, height difference and point coordinates can be obtained almost at the same time. The total station is connected to the main control console through the transmission interface. The main control console is equipped with a data processing module, a data storage module, a display module, and a parameter input module to monitor the rotation angle, rotation linear speed, and rotation angular speed; For the inclination of the rigid frame bridge, the total station will perform cumulative calculations based on the collected data, but there is a certain cumulative calculation error. The monitoring device uses the universal level 1 and universal level 2 to intuitively monitor the horizontal inclination of the rigid frame bridge deck. The settings of the visual camera 1 and the visual camera 2 can intuitively view the results through the camera's monitoring screen; the settings of the rangefinder and the rangefinder patch can monitor the change in the distance between the supporting piers of the rigid frame bridge and the test stand 1 and the test stand 2. According to the changes in the inspection data, the inclination of the rigid frame bridge relative to the supporting piers is calculated and compared with the calculation results of the total station to ensure the monitoring accuracy, screen out abnormal data, take the average value, and perform corresponding weight compensation and rotation compensation; An angular displacement sensor coaxial with the rotating support seat is set on the upper plane of the rigid frame bridge to monitor the rotation of the rigid frame bridge. The inspection result of the angular displacement sensor is compared with the rotation angle of the rotating support seat to monitor whether there is relative displacement between the bridge deck of the rigid frame bridge and the supporting piers.

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