Deformation monitoring method and device for butt joint of cable tower reinforcement cages of cable-stayed bridge

By using deformation monitoring methods and devices during the docking process of cable-stayed bridge cable tower steel cages, the displacement, inclination and deformation of the steel cages are monitored and adjusted in real time, the problem of inability to monitor the docking process in real time in the prior art is solved, and construction safety and structural performance are improved.

CN120008686APending Publication Date: 2025-05-16ZHEJIANG COMM CONSTR GRP CO LTD +3

Patent Information

Application Number
CN202510175436.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-18
Publication Date
2025-05-16

AI Technical Summary

Technical Problem

The existing technology cannot monitor the docking process of cable-stayed bridge cable tower reinforced cages in real time, resulting in the inability to timely discover and solve problems that affect structural safety, which may lead to structural performance degradation or safety accidents.

Method used

A deformation monitoring method and device is adopted to ensure the docking accuracy and structural safety by setting up a data acquisition system, lifting equipment, level monitoring and adjustment mechanism and attitude adjustment mechanism.

Benefits of technology

Real-time monitoring and online attitude adjustment of the cable tower reinforced cage docking process are realized, ensuring structural performance and construction safety, and reducing the risk of safety accidents.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

A deformation monitoring method and device for butt joint of a cable-stayed bridge cable tower reinforcement cage comprises the following steps: step 1, setting a data acquisition system: setting an upper computer as the data acquisition system, connecting a sensor with hoisting equipment, and connecting the sensor with the data acquisition system to ensure normal signal transmission, then all sensors are calibrated to ensure the accuracy and consistency of data; compared with the prior art, real-time posture monitoring is carried out on the cable bent tower reinforcement cage in the hoisting and butting process in the cable bent tower reinforcement cage butting and hoisting process, online posture adjustment is carried out on the cable bent tower reinforcement cage through hoisting equipment, and therefore the problem that in the existing cable-stayed bridge cable bent tower reinforcement cage butting construction process, the cable bent tower reinforcement cage cannot be hoisted in real time is solved. The butt joint process of the reinforcement cage cannot be monitored in real time, the problem that the structure safety is affected cannot be found and solved in time, and the structural performance of the reinforcement cage after butt joint is guaranteed.
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Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a deformation monitoring method and device for connecting steel cages of cable towers of cable-stayed bridges. Background Art

[0002] The cable-stayed bridge is a common long-span bridge structure, which is characterized by transferring the load of the bridge deck to the tower column through the cable-stayed cable, thereby achieving long-distance span. As the main supporting structure of the cable-stayed bridge, the stability and accuracy of the tower are crucial to the safety and function of the entire bridge. In the construction process of the cable-stayed bridge, the docking of the steel cage of the tower is a key step, which directly affects the structural performance of the tower and the final form of the bridge.

[0003] The Chinese patent application number 202010920670.0 discloses a method and structure for hoisting the steel cage of a cable tower column segment. The above disclosed method and structure for hoisting the steel cage segment, divide the cable tower column of a suspension bridge or cable-stayed bridge into tower column segments as required, and the steel cage of each tower column segment is divided into 4 block steel cages. After the block steel cages are prefabricated, they are delivered to the designated position by rotating and hoisting at the bottom of the tower column, assembled on site and connected with the installed tower column segment steel cage below to obtain the tower column segment steel cage, repeat the above steps to complete the construction of the tower column segment steel cage. The Chinese patent application number 202010608432.6 discloses a cable anchoring method for a concrete beam cable-stayed bridge, the above disclosed cable anchoring method. The method comprises the following steps: S1, prefabricating an anchor plate, making the embedded steel plate into a wavy plate in the vertical direction, and opening a reserved hole on the embedded steel plate; S2, pouring a bridge, setting up a bridge formwork, arranging a steel cage in the bridge formwork, arranging the embedded steel plate of the anchor plate between the steel cages, installing threaded steel bars through the reserved holes, tying and fixing the threaded steel bars and the steel cage together, then installing a top formwork on the bridge formwork, fixing the top formwork to the outer periphery of the anchor plate, pouring concrete through the pouring port on the top formwork, and after the concrete solidifies, the embedded steel plate and the concrete bridge are formed as one piece; S3, anchoring the inclined cable, fixing the lower end of the inclined cable through the inclined cable anchor head, and connecting the inclined cable anchor head with the anchor pad at the lower end of the anchor pipe.

[0004] The above-mentioned prior art discloses a construction method for a cable tower steel cage. However, during the existing cable-stayed bridge cable tower steel cage docking construction process, it is impossible to monitor the docking process of the steel cage in real time, so that problems affecting the structural safety cannot be discovered and solved in time, which will not only lead to a decrease in structural performance after the steel cage is docked, but may even cause safety accidents. Summary of the invention

[0005] The present invention aims to overcome the defects in the above-mentioned prior art and provide a deformation monitoring method and device for the connection of steel cages of cable-stayed bridge towers, which can monitor the connection process of steel cages in real time, solve problems arising during the construction process, and ensure construction safety.

[0006] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: a deformation monitoring method for connecting steel cages of cable-stayed bridge towers, comprising the following steps: Step 1: Data acquisition system setup: Set up the host computer as the data acquisition system, connect the sensor to the lifting equipment, and connect the sensor to the data acquisition system to ensure normal signal transmission, and then calibrate all sensors to ensure data accuracy and consistency; Step 2: Connect the lifting equipment to the cable tower steel cage: Connect the lifting steel cable on the lifting equipment to the cable tower steel cage to be lifted; Step 3: Collecting hoisting data: hoist the cable tower steel cage a certain distance from the ground by hoisting equipment, and then suspend it, adjust the hoisted cable tower steel cage horizontally, and collect the hoisting data of the cable tower steel cage after the adjustment is completed; Step 4: Real-time data collection and transmission: The displacement and tilt data of the cable tower reinforcement cage during the hoisting and docking process are recorded in real time through the horizontal monitoring and adjustment mechanism, and then the data is transmitted to the monitoring center in real time through the wireless data transmission equipment; Step 5: Data analysis and early warning: Use data processing software to analyze the collected data in real time, identify abnormal deformation, and set a deformation threshold. Once the deformation exceeds the threshold, an early warning is immediately triggered to notify the construction personnel; Step 6: Construction adjustment and correction: According to the early warning information, timely adjust the position or posture of the cable tower steel cage through the posture adjustment mechanism, make necessary corrections, and monitor again after the adjustment to ensure the docking accuracy of the cable tower steel cage; Step 7. Record and report: Record all data and adjustments during the monitoring process in detail, and generate a monitoring report based on the monitoring results and construction adjustments; Step 8. Continuous monitoring and maintenance: During the entire construction period, continuous deformation monitoring is carried out to ensure the safety of the structure, and monitoring equipment is checked regularly to ensure its normal operation.

[0007] A deformation monitoring device for connecting steel cages of cable-stayed bridge towers comprises a hoisting device, on which a posture adjustment mechanism and a horizontal monitoring adjustment mechanism are provided; the posture adjustment mechanism comprises a fan and a driving component for adjusting the angle of the fan; the horizontal monitoring adjustment mechanism comprises a plurality of load-bearing cylinders, in which pressure-bearing pistons are slidably connected, and the upper and lower ends of the pressure-bearing pistons are respectively connected to a detection rod and a hoisting force rod.

[0008] As a preferred solution of the present invention, the lifting equipment includes a lifting beam and a plurality of connecting steel cables connected to the lifting beam, the plurality of connecting steel cables are connected to each corner of the lifting beam, and the plurality of connecting steel cables are provided with through-hole tension sensors.

[0009] As a preferred solution of the present invention, the hoisting beam frame is provided with a device controller and a wireless communication module, the wireless communication module is electrically connected to the device controller, and the through-type tension sensor is also electrically connected to the device controller.

[0010] As a preferred solution of the present invention, the posture adjustment mechanism is arranged at each corner of the lifting beam frame, and a mounting frame for mounting the fan and driving the fan to rotate is provided at the bottom of the fan.

[0011] As a preferred solution of the present invention, the drive assembly includes a reduction drive motor and a rotating column connected to the bottom of the mounting frame, the output end of the reduction drive motor is connected to a driving worm, and the rotating column is provided with a driving turbine meshing with the driving worm.

[0012] As a preferred solution of the present invention, a plurality of the load-bearing cylinders are evenly distributed on the hoisting beam frame, a pressure-bearing spring is provided in the load-bearing cylinder, and the pressure-bearing spring is sleeved on the hoisting force-bearing rod.

[0013] As a preferred solution of the present invention, the detection rod passes through and extends to the upper surface of the load-bearing cylinder, the lifting force rod passes through and extends to the lower surface of the load-bearing cylinder, and the end of the lifting force rod is hinged with a lifting cable.

[0014] As a preferred solution of the present invention, a grating ruler is provided at the upper end of the load-bearing cylinder, and a detection reading head of the grating ruler is fixedly connected to the detection rod.

[0015] As a preferred solution of the present invention, an oil inlet pipe and an oil outlet pipe are connected to the load-bearing cylinder, and a hydraulic pump station connected to the oil inlet pipe and the oil outlet pipe is provided on the lifting beam.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting steps 1 to 8, the real-time posture monitoring of the cable tower steel cage during the hoisting and docking process of the cable tower steel cage is realized, and the online posture adjustment of the cable tower steel cage is realized through the hoisting equipment, thereby solving the problem that the existing cable-stayed bridge cable tower steel cage docking construction process cannot monitor the steel cage docking process in real time and timely discover and solve the problems affecting the structural safety, ensuring the structural performance of the steel cage after docking, reducing the occurrence of safety accidents during the construction process, and improving the safety of the construction; 2. The weight, posture and deformation of the cable tower steel cage in hoisting are monitored by means of the horizontal monitoring and adjustment mechanism and the posture and deformation adjustment of the cable tower steel cage in hoisting are realized, thereby ensuring that the cable tower steel cage is always in a horizontal state, thereby ensuring the hoisting and assembly effect of the cable tower steel cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a monitoring flow chart of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention; Figure 3 It is a structural schematic diagram of the posture adjustment mechanism of the present invention; Figure 4 It is a structural schematic diagram of the level monitoring and adjusting mechanism; Figure 5 This is a schematic diagram of the internal structure of the load-bearing cylinder. Figure markings: lifting equipment 1, lifting beam 101, connecting steel cable 102, through-type tension sensor 1021, equipment controller 2, wireless communication module 3, posture adjustment mechanism 4, fan 401, mounting frame 4011, fan cylinder 4012, drive assembly 402, reduction drive motor 4021, rotating column 4022, drive worm 4023, drive turbine 4024, horizontal monitoring and adjustment mechanism 5, load-bearing cylinder 501, pressure-bearing piston 5011, detection rod 5012, lifting force rod 5013, pressure-bearing spring 502, lifting steel cable 503, grating scale 504, oil inlet pipe 505, oil outlet pipe 506, hydraulic pump station 507. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] like Figure 1-Figure 5 As shown, a deformation monitoring method for connecting steel cages of cable-stayed bridge towers comprises the following steps: Step 1: Data acquisition system setup: Set the host computer as the data acquisition system, connect the sensor to the lifting equipment 1, and connect the sensor to the data acquisition system to ensure normal signal transmission, and then calibrate all sensors to ensure the accuracy and consistency of the data; Step 2: Connect the hoisting equipment 1 to the cable tower steel cage: Connect the hoisting steel cable on the hoisting equipment 1 to the cable tower steel cage to be hoisted; Step 3: Collecting hoisting data: hoist the cable tower steel cage a certain distance from the ground by hoisting equipment 1 and then suspend it, adjust the hoisted cable tower steel cage horizontally, and collect the hoisting data of the cable tower steel cage after the adjustment is completed; Furthermore, the tower steel cage is suspended 50 centimeters above the ground.

[0020] Step 4: Real-time data collection and transmission: The displacement and tilt data of the cable tower reinforcement cage during the hoisting and docking process are recorded in real time through the horizontal monitoring and adjustment mechanism 5, and then the data is transmitted to the monitoring center in real time through the wireless data transmission equipment; Step 5: Data analysis and early warning: Use data processing software to analyze the collected data in real time, identify abnormal deformation, and set a deformation threshold. Once the deformation exceeds the threshold, an early warning is immediately triggered to notify the construction personnel; Step 6: Construction adjustment and correction: According to the early warning information, the position or posture of the cable tower steel cage is adjusted in time through the posture adjustment mechanism 4, and necessary corrections are made. After the adjustment, monitoring is performed again to ensure the docking accuracy of the cable tower steel cage; Step 7. Record and report: Record all data and adjustments during the monitoring process in detail, and generate a monitoring report based on the monitoring results and construction adjustments; Step 8. Continuous monitoring and maintenance: During the entire construction period, continuous deformation monitoring is carried out to ensure the safety of the structure, and monitoring equipment is checked regularly to ensure its normal operation.

[0021] Furthermore, after the project is completed, the monitoring data will be summarized and analyzed to summarize the lessons learned. The monitoring results will be fed back to the design and construction team for future project improvements. By setting steps one to eight, the real-time posture monitoring of the cable tower steel cage during the hoisting and docking process of the cable tower steel cage is realized, and the online posture adjustment of the cable tower steel cage is realized through the hoisting equipment 1, thereby solving the problem that the existing cable-stayed bridge cable tower steel cage docking construction process cannot monitor the docking process of the steel cage in real time and timely discover and solve the problems that affect the structural safety, ensuring the structural performance after the steel cage is docked, reducing the occurrence of safety accidents during the construction process, and improving the safety of the construction.

[0022] A deformation monitoring device for connecting steel cages of cable-stayed bridge towers comprises a hoisting device 1, on which a posture adjustment mechanism 4 and a horizontal monitoring adjustment mechanism 5 are provided; the posture adjustment mechanism 4 comprises a fan 401 and a driving component 402 for adjusting the angle of the fan 401; the horizontal monitoring adjustment mechanism 5 comprises a plurality of load-bearing cylinders 501, in which a pressure-bearing piston 5011 is slidably connected, and the upper and lower ends of the pressure-bearing piston 5011 are respectively connected to a detection rod 5012 and a hoisting force rod 5013.

[0023] By setting up the horizontal monitoring and adjustment mechanism 5 and the posture adjustment mechanism 4, the weight, posture and deformation of the cable tower steel cage in hoisting can be monitored, and the posture and deformation of the cable tower steel cage in hoisting can be adjusted, so as to ensure that the cable tower steel cage is always in a horizontal state, thereby ensuring the hoisting and assembly effect of the cable tower steel cage.

[0024] The hoisting device 1 includes a hoisting beam 101 and a plurality of connecting cables 102 connected to the hoisting beam 101. The plurality of connecting cables 102 are connected to the corners of the hoisting beam 101. Further, the hoisting beam 101 is a rectangular structure. Four connecting cables 102 are connected to the hoisting beam 101. The four connecting cables 102 are respectively hinged at the four corners of the hoisting beam 101, and the four connecting cables 102 are symmetrically distributed with the axis of the hoisting beam 101 as the center. A plurality of connecting steel cables 102 are provided with through-type tension sensors 1021 . Furthermore, four connecting steel cables 102 are sleeved with through-type tension sensors 1021 . The through-type tension sensors 1021 are used to monitor the tension of each connecting steel cable 102 .

[0025] In addition, the hoisting beam frame 101 is provided with an equipment controller 2 and a wireless communication module 3. The wireless communication module 3 is electrically connected to the equipment controller 2, and the through-type tension sensor 1021 is also electrically connected to the equipment controller 2. Furthermore, during the monitoring process, the tension of the connecting steel cable 102 is monitored by the through-type tension sensor 201, and the tension is fed back to the equipment controller 2. Then, the data is transmitted to the monitoring center in real time through the wireless communication module 3 to prevent the connecting steel cable 102 from being subjected to excessive force during the hoisting process, resulting in damage or breakage of the connecting steel cable 102, causing a hoisting safety accident.

[0026] At the corners of the hoisting beam 101, there are posture adjustment mechanisms 4, which include a fan 401 and a driving assembly 402 for adjusting the angle of the fan 401. A mounting frame 4011 for mounting the fan 401 and driving the fan 401 to rotate is provided at the bottom of the fan 401. Furthermore, the posture adjustment mechanism 4 is used to adjust the posture of the cable tower steel cage being hoisted and the fixed cable tower steel cage when docking, so as to ensure that the cable tower steel cage being hoisted can be quickly docked and installed. Specifically, four fans 401 are respectively arranged at the four corners of the hoisting beam 101, and mounting frames 4011 are arranged at the four corners of the hoisting beam 101. The fan 401 is fixedly arranged on the mounting frame 4011, and a fan cylinder 4012 is sleeved on the fan 401. When in use, the fan 401 is gathered by the circular fan cylinder 6012, thereby increasing the posture adjustment thrust for the hoisting beam 101 and the cable tower steel cage being hoisted.

[0027] The driving assembly 402 includes a reduction driving motor 4021 and a rotating column 4022 connected to the bottom of the mounting frame 4011. The output end of the reduction driving motor 4021 is connected to a driving worm 4023. The rotating column 4022 is provided with a driving turbine 4024 meshing with the driving worm 4023. Furthermore, the rotating column 4022 is rotatably connected to the lifting beam frame 101 through a bearing. The reduction driving motor 4021 is fixedly set on the lifting beam frame 101. Bearings are set at both ends of the driving worm 4023 and are set on the lifting beam frame 101 through a bearing seat. The reduction driving motor 4021 is electrically connected to the equipment controller 2. The reduction driving motor 4021 controls the rotation of the driving worm 4023, thereby driving the driving turbine 4024 and the rotating column 4022 to rotate synchronously, thereby realizing the adjustment of the angle of the fan 401.

[0028] Furthermore, when the posture of the lifting beam frame 011 and the tower steel cage being lifted is adjusted, a control signal is sent to the equipment controller 2 through the wireless communication module 3, and the equipment controller 2 controls the reduction drive motor 4021 to work, and the reduction drive motor 4021 drives the driving worm 4023 to rotate, and the driving worm 4023 drives the driving worm wheel 4024 to rotate, and the driving worm wheel 4024 drives the rotating column 4022 to rotate, thereby driving the mounting frame 4011 and the fan 401 to rotate, adjusting the thrust direction, and then through the thrust generated by the fan 401, the lifting beam frame 101 and the tower steel cage are pushed to adjust their postures.

[0029] A horizontal monitoring and adjusting mechanism 5 is provided on the lifting beam 101, and the horizontal monitoring and adjusting mechanism 5 includes a plurality of load-bearing cylinders 501 evenly distributed on the lifting beam 101, and a pressure-bearing piston 5011 is slidably connected in the load-bearing cylinder 501, and the upper and lower ends of the pressure-bearing piston 5011 are respectively connected to a detection rod 5012 and a lifting force rod 5013. Further, the horizontal monitoring and adjusting mechanism 5 is used to perform horizontal monitoring and adjustment on the steel cage of the cable tower during lifting. Specifically, a plurality of load-bearing cylinders 501 are distributed on the two long sides of the lifting beam 101, and a plurality of load-bearing cylinders 501 are evenly distributed along the length direction of the lifting beam 101, and the two ends of the load-bearing cylinders 501 extend to the upper and lower surfaces of the lifting beam 101, respectively, and an inner cavity is formed in the load-bearing cylinder 501, and the pressure-bearing piston 5011 is slidably arranged in the inner cavity, and the pressure-bearing piston 5011 drives the detection rod 5012 and the lifting force rod 5013 at the upper and lower ends to move in the inner cavity.

[0030] The detection rod 5012 passes through and extends to the upper surface of the load-bearing cylinder 501, the lifting force rod 5013 passes through and extends to the lower surface of the load-bearing cylinder 501, and the end of the lifting force rod 5013 is hinged with a lifting cable 503. Furthermore, the detection rod 5012 passes through and extends upward from the inside of the load-bearing cylinder 501 to the outside of the load-bearing cylinder 501, the lifting force rod 5013 passes through and extends downward from the inside of the load-bearing cylinder 501 to the outside of the load-bearing cylinder 501, and the lifting cable 503 is hinged at the bottom end of the lifting force rod 5013. The lifting cable 503 is used to connect with the cable tower steel cage to lift the cable tower steel cage.

[0031] A pressure spring 502 is provided in the load-bearing cylinder 501, and the pressure spring 502 is sleeved on the hoisting force rod 5013, and a grating ruler 504 is provided at the upper end of the load-bearing cylinder 501, and the detection reader of the grating ruler 504 is fixedly connected to the detection rod 5012. Further, the upper end of the pressure spring 502 abuts against the lower surface of the pressure piston 5011, and the lower end of the pressure spring 502 abuts against the bottom end of the inner cavity of the load-bearing cylinder 501. The grating ruler 504 is arranged on the load-bearing cylinder 50 1, the grating ruler 504 is electrically connected to the equipment controller 2. When in use, the detection reader on the grating ruler 504 follows the movement of the detection rod 5012 to detect the distance that the hoisting force rod 5013 extends out of the load-bearing cylinder 501, and the compression amount of the pressure spring 502 after hoisting is obtained, so as to calculate the weight of the cable tower steel cage in hoisting according to the relevant formula theorem, and ensure that during the hoisting movement, there will be no hoisting accidents due to overweight.

[0032] At the same time, after the cable tower steel cage is lifted off the ground, the length of each detection rod 5012 contracted into the load-bearing cylinder 501 is recorded. During the lifting and docking process, once data deviation occurs, the deformation degree of the cable tower steel cage during the lifting and docking process can be known, so as to facilitate timely adjustment of the cable tower steel cage during the lifting and docking process.

[0033] The load-bearing cylinder 501 is connected to an oil inlet pipe 505 and an oil outlet pipe 506, and the lifting beam 101 is provided with a hydraulic pump station 507 connected to the oil inlet pipe 505 and the oil outlet pipe 506. Furthermore, the hydraulic pump station 507 is fixedly installed on the lifting beam 101, and the hydraulic pump station 507 is electrically connected to the equipment controller 2. The oil inlet pipe 505 and the oil outlet pipe 506 are both connected to the hydraulic pump station 507 through an electromagnetic valve.

[0034] When in use, after the cable tower steel cage is lifted off the ground, it is suspended for a period of time, and the distance that the lifting force rod 5013 extends out of the load-bearing cylinder 501 is detected, and the weight of the cable tower steel cage in lifting is calculated by Hooke's law to ensure that no lifting accidents will occur due to overweight during the lifting and moving process, and the horizontal state of the lifted cable tower steel cage is recorded. When the bottom of the lifted cable tower steel cage is in a non-horizontal state, hydraulic oil is pumped into the corresponding load-bearing cylinder 501 through the hydraulic pump station 507, thereby pushing the pressure piston 5011 to move upward, adjusting the level of the cable tower steel cage, and recording the adjusted position of the detection rod 5012. During the lifting and docking process, after data changes, hydraulic oil is pumped into the load-bearing cylinder 501 or the return oil is released according to the initial record to adjust the shape of the cable tower steel cage, thereby achieving the effect of quickly lifting and docking the cable tower steel cage.

[0035] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0036] Although the following terms are used more frequently in this article: hoisting equipment 1, hoisting beam frame 101, connecting steel cable 102, through-type tension sensor 1021, equipment controller 2, wireless communication module 3, posture adjustment mechanism 4, fan 401, mounting frame 4011, fan cylinder 4012, drive assembly 402, reduction drive motor 4021, rotating column 4022, drive worm 4023, drive turbine 4024, level monitoring and adjustment mechanism 5, load-bearing cylinder 501, pressure-bearing piston 5011, detection rod 5012, hoisting force rod 5013, pressure-bearing spring 502, hoisting steel cable 503, grating ruler 504, oil inlet pipe 505, oil outlet pipe 506, hydraulic pump station 507, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A deformation monitoring method for connecting steel cages of cable-stayed bridge towers, characterized in that: The following steps are involved: Step 1: Data acquisition system setup: Set up the host computer as the data acquisition system, connect the sensor to the lifting equipment (1), and connect the sensor to the data acquisition system to ensure normal signal transmission, and then calibrate all sensors to ensure data accuracy and consistency; Step 2: connecting the lifting equipment (1) to the cable tower steel cage: connecting the lifting steel cable on the lifting equipment (1) to the cable tower steel cage to be lifted; Step 3, collecting lifting data: using the lifting equipment (1), the cable tower steel cage is lifted a certain distance from the ground and then suspended, and the lifted cable tower steel cage is adjusted horizontally. After the adjustment is completed, the lifting data of the cable tower steel cage is collected; Step 4: Real-time data collection and transmission: The displacement and tilt data of the cable tower reinforcement cage during the hoisting and docking process are recorded in real time through the horizontal monitoring and adjustment mechanism (5), and then the data is transmitted to the monitoring center in real time through the wireless data transmission equipment; Step 5: Data analysis and early warning: Use data processing software to analyze the collected data in real time, identify abnormal deformation, and set a deformation threshold. Once the deformation exceeds the threshold, an early warning is immediately triggered to notify the construction personnel; Step 6: Construction adjustment and correction: According to the early warning information, the position or posture of the cable tower steel cage is adjusted in time through the posture adjustment mechanism (4), and necessary corrections are made. After the adjustment, monitoring is performed again to ensure the docking accuracy of the cable tower steel cage; Step 7. Record and report: Record all data and adjustments during the monitoring process in detail, and generate a monitoring report based on the monitoring results and construction adjustments; Step 8. Continuous monitoring and maintenance: During the entire construction period, continuous deformation monitoring is carried out to ensure the safety of the structure, and monitoring equipment is checked regularly to ensure its normal operation.

2. A deformation monitoring device for connecting steel cages of cable-stayed bridge towers, characterized in that: The method for monitoring the deformation of the steel cage connection of the cable-stayed bridge tower as claimed in claim 1 comprises a hoisting device (1), wherein the hoisting device (1) is provided with a posture adjustment mechanism (4) and a horizontal monitoring adjustment mechanism (5); the posture adjustment mechanism (4) comprises a fan (401) and a drive assembly (402) for adjusting the angle of the fan (401); the horizontal monitoring adjustment mechanism (5) comprises a plurality of load-bearing cylinders (501), wherein a pressure-bearing piston (5011) is slidably connected in the load-bearing cylinder (501), and the upper and lower ends of the pressure-bearing piston (5011) are respectively connected to a detection rod (5012) and a hoisting force rod (5013).

3. The deformation monitoring device for connecting steel cages of cable-stayed bridge towers according to claim 2 is characterized in that: The hoisting equipment (1) comprises a hoisting beam frame (101) and a plurality of connecting steel cables (102) connected to the hoisting beam frame (101); the plurality of connecting steel cables (102) are connected to each corner of the hoisting beam frame (101), and each of the plurality of connecting steel cables (102) is provided with a through-type tension sensor (1021).

4. The deformation monitoring device for connecting steel cages of cable-stayed bridge towers according to claim 3 is characterized in that: The hoisting beam frame (101) is provided with a device controller (2) and a wireless communication module (3); the wireless communication module (3) is electrically connected to the device controller (2), and the through-type tension sensor (1021) is also electrically connected to the device controller (2).

5. The deformation monitoring device for connecting steel cages of cable-stayed bridge towers according to claim 2 is characterized in that: The posture adjustment mechanism (4) is arranged at each corner of the hanging beam frame (101), and a mounting frame (4011) for mounting the fan (401) and driving the fan (401) to rotate is provided at the bottom of the fan (401).

6. A deformation monitoring device for connecting steel cages of cable-stayed bridge towers according to claim 5, characterized in that: The driving assembly (402) comprises a reduction driving motor (4021) and a rotating column (4022) connected to the bottom of the mounting frame (4011); the output end of the reduction driving motor (4021) is connected to a driving worm (4023); and the rotating column (4022) is provided with a driving turbine (4024) meshing with the driving worm (4023).

7. The deformation monitoring device for connecting steel cages of cable-stayed bridge towers according to claim 3 is characterized in that: The plurality of load-bearing cylinders (501) are evenly distributed on the hoisting beam frame (101), and a pressure-bearing spring (502) is arranged in the load-bearing cylinder (501), and the pressure-bearing spring (502) is sleeved on the hoisting force-bearing rod (5013).

8. The deformation monitoring device for connecting steel cages of cable-stayed bridge towers according to claim 2 is characterized in that: The detection rod (5012) penetrates and extends to the upper surface of the load-bearing cylinder (501), and the lifting force rod (5013) penetrates and extends to the lower surface of the load-bearing cylinder (501), and the end of the lifting force rod (5013) is hinged with a lifting steel cable (503).

9. The deformation monitoring device for connecting steel cages of cable-stayed bridge towers according to claim 2 is characterized in that: A grating ruler (504) is provided at the upper end of the load-bearing cylinder (501), and a detection reader of the grating ruler (504) is fixedly connected to a detection rod (5012).

10. The deformation monitoring device for connecting steel cages of cable-stayed bridge towers according to claim 3, characterized in that: The load-bearing cylinder (501) is connected to an oil inlet pipe (505) and an oil outlet pipe (506), and the hoisting beam frame (101) is provided with a hydraulic pump station (507) connected to the oil inlet pipe (505) and the oil outlet pipe (506).

Citation Information

Patent Citations

  • Stay cable anchoring method of concrete beam cable-stayed bridge

    CN111877161A

  • Cable bent tower column section reinforcement cage block hoisting construction method and structure

    CN111996920A

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