Bridge rotation balance pressure monitoring system and jacking adjustment method

Abstract

The invention relates to a bridge rotation balance pressure monitoring system and a jacking adjustment method, and belongs to the technical field of bridge rotation. Comprising a bridge sensor, a GNSS receiver, a wireless data acquisition module and a BIM bridge three-dimensional simulation module, the monitoring equipment is provided with a base station and four monitoring stations, the base station is arranged on the top surface of an erected beam section, and the four monitoring stations are arranged at the middle points of the top surfaces of two swivel bridges and the end points away from the base station respectively. The GNSS receiver is used for acquiring real-time measurement point coordinates of a bridge and transmitting the coordinates to the wireless data acquisition system, the monitoring devices upload respective coordinate information to the processing module in real time, and the processing module processes the received data and then transmits the data to the BIM bridge three-dimensional simulation module to construct a swivel simulation model to monitor and early warn the swivel process in real time. The problem that in the existing swivel construction monitoring process, monitoring errors are prone to occurring, and consequently potential safety hazards occur in swivel construction is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge rotation, and in particular relates to a bridge rotation balance pressure monitoring system and a jacking adjustment method. Background Art

[0002] 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. However, when monitoring the rotation mechanism, the operating range of the rotation is too large, and the stress and deformation at the root of the beam and the deflection of the beam's own weight will cause the rotation to produce vertical and translational displacements. It is difficult to automatically measure and calculate the resulting offsets, which reduces the stability of the monitoring system operation and the accuracy of the monitoring values. In addition, when adjusting the balance of the rotation, it is not easy to automatically monitor the actual value of the counterweight required for the rotation, which increases the limitations of the rotation monitoring system.

[0003] Moreover, during the rotation construction of a large-span bridge, in order to avoid the impact of the rotation construction on the traffic under the bridge, it is usually necessary to carry out rotation construction on both bridge sections. During the rotation, the supports under the beam must be completely removed and left suspended in the air. Therefore, full monitoring and control are required to prevent the bridge from under-rotating or over-rotating, excessive displacement of the beam, or collapse accidents.

[0004] The existing rotation construction monitoring of the rotating bridge mainly measures the real-time posture changes of the beam through the cooperation of the total station and the standard circular prism. However, during the rotation process, the prism head will rotate with the bridge, resulting in changes in the horizontal and vertical directions of the prism relative to the fixed total station. Therefore, personnel are required to rotate it in the opposite direction continuously to align it with the total station for continuous observation. Since the rotation time is short and more prisms need to be rotated, the workload is large. Once a person accidentally touches the prism bracket, the monitoring point will fail. The existing 360° small prism itself has large errors and observation blind spots. When the beam is tilted, the prism cannot be automatically restored to a vertical state, resulting in new observation errors. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a bridge rotation balance pressure monitoring system and a jacking adjustment method, which solves the problem that monitoring errors are prone to occur during the existing rotation construction monitoring process, resulting in safety hazards in the rotation construction.

[0006] The purpose of the present invention can be achieved through the following technical solutions: a bridge rotation balance pressure monitoring system, including a bridge sensor, a GNSS receiver, a wireless data acquisition module and a BIM bridge three-dimensional simulation module, the bridge sensor is used to collect real-time stress and strain data of the bridge on-site force-bearing points, the rotation angular velocity, rotation traction and rotation angle of the bridge rotation structure, the wireless data acquisition module includes a monitoring device and a processing module, the monitoring device is provided with a base station and four monitoring stations, the base station is located on the top surface of the erected beam section, the four monitoring stations are respectively located at the midpoint of the top surface of the two rotating bridges and the end point away from the base station, the GNSS receiver is used to obtain the initial measuring point coordinates of the bridge end, the monitoring point, and the base point and the real-time measuring point coordinates within the set monitoring time interval and transmit them to the wireless data acquisition system, the monitoring device will upload their respective coordinate information to the processing module in real time, the processing module will process the received data and transmit it to the BIM bridge three-dimensional simulation module to build a rotation simulation model for real-time monitoring and early warning of the rotation process.

[0007] As a preferred technical solution of the present invention, the monitoring point of the base station is set to A, and the detection points on the two rotating bridges are set to B, C and D, E respectively. The monitoring point A forms two triangles with B, C and D, E respectively. The processing module calculates the length of each side of the two triangles according to the coordinate information uploaded by the base point and the monitoring point, and calculates the rotation angle, angular velocity and linear velocity according to the length of each side and the rotation radius of the beam. The processing module uploads the processed data to the BIM bridge three-dimensional simulation module for real-time monitoring.

[0008] As a preferred technical solution of the present invention, it also includes a jacking module, which jacks up the unbalanced bridge according to the monitoring results of the BIM bridge three-dimensional simulation module to restore the balance of the bridge, and the monitoring system continues to perform real-time monitoring.

[0009] As a preferred technical solution of the present invention, the BIM bridge three-dimensional simulation module constructs a monitoring standard model according to bridge size, connection relationship, construction sequence, monitoring data and a bridge rotation construction cluster library based on the Revit platform. The standard model displays safety graded color warnings according to the bridge posture, rotation speed and torque distribution.

[0010] As a preferred technical solution of the present invention, the safety graded color warning includes green warning, yellow warning, orange warning and red warning. When the BIM bridge three-dimensional simulation module presents an orange warning or a red warning, the rotation construction is stopped and the jacking module is allowed to jack up the unbalanced position until it returns to a green warning.

[0011] As a preferred technical solution of the present invention, the bridge sensor also monitors the beam end displacement and bridge body inclination parameters of the bridge.

[0012] Based on the above-mentioned bridge rotation balance pressure monitoring system, the present invention also proposes a jacking adjustment method of the bridge rotation balance pressure monitoring system, comprising the following steps:

[0013] S1: Extract control parameters according to the construction design drawing, determine the early warning value of the control parameters of the bridge rotation result and the final position of the bridge;

[0014] S2: The BIM bridge 3D simulation module builds a monitoring standard model based on bridge size, connection relationship, construction sequence, and monitoring data;

[0015] S3: Obtain real-time monitoring data through bridge sensors and compare it with GNSS receiver data to initialize data;

[0016] S4: The data based on the GNSS receiver and bridge sensors are processed through the wireless data acquisition module and transmitted to the BIM bridge 3D simulation module;

[0017] S5: The BIM bridge 3D simulation module monitors the rotation process based on the received data;

[0018] S6: According to the preset monitoring data warning threshold, the installation safety level is divided and real-time monitoring is carried out;

[0019] S7: When the warning signal appears, the bridge restores balance when the operating console operates the jacking module;

[0020] S8: When the bridge rotates to the predetermined position, the rotation is stopped and the bridge parameters are continuously monitored to facilitate subsequent maintenance and construction.

[0021] The beneficial effects of the present invention are as follows: the parameter changes of the bridge during the rotation process are detected by the bridge sensor, and the monitoring point position of the monitoring equipment is obtained by the GNSS receiver, and the data uploaded by the monitoring equipment is checked and initialized. Then, the processing module processes the monitored data to allow the BIM bridge three-dimensional simulation module to construct a rotation simulation model to obtain the position changes of each monitoring station during the rotation of the bridge. When the simulation model monitors the position data of the monitoring station and the bridge parameters collected by the bridge sensor during the rotation construction, timely early warning can be given, avoiding the occurrence of monitoring errors during the rotation process and causing safety hazards. At the same time, it solves the problem that when the total station and the standard circular prism are used to measure the real-time posture changes of the beam body, there are many rotating prisms, resulting in a large workload and prism monitoring failure, and solves the problem that monitoring errors are prone to occur in the existing rotation construction monitoring process, resulting in safety hazards in the rotation construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the monitoring system architecture of the present invention;

[0024] Figure 2 It is a flow chart of the construction method of the present invention;

[0025] Figure 3 It is a schematic diagram of the bridge rotation construction structure of the present invention. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0027] See also Figure 1-Figure 3 The present embodiment provides a bridge rotation balance pressure monitoring system, including a bridge sensor, a GNSS receiver, a wireless data acquisition module and a BIM bridge three-dimensional simulation module. The bridge sensor is used to collect real-time stress and strain data of the bridge on-site force-bearing points, the rotation angular velocity, rotation traction and rotation angle of the bridge rotation structure. The wireless data acquisition module includes a monitoring device and a processing module, wherein the monitoring device is provided with a base station and four monitoring stations, and the base station is located on the top surface of the completed beam section, and the four monitoring stations are respectively located at the midpoint of the top surface of the two rotating bridges and the end point far away from the base station. The GNSS receiver is used to obtain the initial measurement point coordinates of the bridge end, the monitoring point, and the base point and the real-time measurement point coordinates within the set monitoring time interval and transmit them to the wireless data acquisition system. The base station and the four monitoring stations in the monitoring device will upload their respective coordinate information to the processing module in real time. The processing module will process the received data and transmit it to the BIM bridge three-dimensional simulation module to build a rotation simulation model to monitor and warn the rotation process in real time.

[0028] The bridge sensor is used to detect the parameter changes of the bridge during the rotation process, and the GNSS receiver is used to obtain the monitoring point position of the monitoring equipment, and the data is checked with the uploaded data of the monitoring equipment to initialize the data. Then, the processing module processes the monitored data to allow the BIM bridge three-dimensional simulation module to construct a rotation simulation model to obtain the position changes of each monitoring station during the rotation of the bridge. When the simulation model monitors the position data of the monitoring station and the bridge parameters collected by the bridge sensor during the rotation construction, it can give a timely warning, avoiding the occurrence of monitoring errors during the rotation process and causing safety hazards. At the same time, it solves the problem that when the total station and the standard circular prism are used to measure the real-time posture changes of the beam body, there are many rotating prisms, resulting in a large workload and prism monitoring failure. It solves the problem that monitoring errors are prone to occur in the existing rotation construction monitoring process, resulting in safety hazards in the rotation construction.

[0029] In order to ensure the monitoring accuracy during the bridge rotation process, and to ensure that the bridge will not be under-rotated or over-rotated, the beam body will not be too displaced or collapse due to balance deviation during the rotation process, in this embodiment, the reference station monitoring point is set to A, and the detection points on the two rotating bridges are set to B, C and D, E respectively. The monitoring point A forms two triangles with B, C and D, E respectively. The processing module calculates the length of each side of the two triangles according to the coordinate information uploaded by the reference point and the monitoring point, and calculates the rotation angle, angular velocity and linear velocity according to each side length and the rotation radius of the beam body. The processing module uploads the processed data to the BIM bridge three-dimensional simulation module for real-time monitoring, where ABC forms a triangle, ∠ABC is the monitoring angle of one rotation, and ∠ADE is the monitoring angle of another rotation. During the rotation process, the five monitoring stations upload their respective coordinate information in real time, calculate the length of each side of the triangle according to the coordinate information, and then calculate the real-time angles of ∠ABC and ∠ADE according to the inverse cosine theorem, subtracting the initial angle θ of each rotation in advance, so as to obtain the true angle θi of the rotation. The arc length of rotation can be calculated according to the rotation radius R of the beam. L = θRπ / 180, the angular velocity is obtained according to the angle change within one minute, ω = θi-θ, and then the linear velocity V = ωR is obtained; the beam end displacement and the bridge body inclination parameters will be transmitted to the system in real time through the system, and the imbalance of the bridge rotation process will be monitored through the beam end displacement. When the beam end changes by 1-3cm, the monitoring data will be transmitted to the server, and the data will be converted into the data format required by the operating console and Revit through the C++ program, and the data will be distributed to the bridge rotation construction operating console. The data changes at each monitoring point can be used to obtain the change values ​​of each parameter of the bridge during the rotation process, so as to accurately monitor the parameter changes of the bridge during the rotation process, avoiding the problem of safety hazards caused by monitoring errors.

[0030] In order to improve the efficiency of the rotation construction process and reduce safety hazards, in one embodiment, it also includes a jacking module. The jacking module jacks up the unbalanced bridge according to the monitoring results of the BIM bridge three-dimensional simulation module to restore the balance of the bridge. The monitoring system continues to monitor in real time. During the rotation construction process, the bridge will deflect during the rotation process due to interference from the external environment and uneven weight at both ends of the bridge. Once the deflection exceeds the preset value during the rotation construction process, the construction needs to be stopped, the bridge needs to be monitored and adjusted, and the bridge needs to be restored to a balanced state to continue the rotation construction. Since the bridge needs to be configured to balance the weight at both ends of the bridge, Therefore, when the bridge is unbalanced, continuing to apply counterweights will not only affect the efficiency of construction, but also require precise control of the accuracy of the counterweights to avoid imbalance. Therefore, in order to improve construction efficiency while ensuring a stable posture of the bridge, when it is monitored that the parameters of the bridge during the rotation process reach the preset values, the rotation construction is stopped, and the jacking module is placed at the support point or pivot point to apply vertical force to the bridge to support the weight of the bridge and provide stability. Therefore, the bridge posture is adjusted through the jacking module to ensure the balance and stability of the bridge during the entire rotation process, thereby ensuring that the efficiency of the rotation construction process is improved while reducing the occurrence of safety hazards.

[0031] In order to ensure that the bridge can respond promptly to changes in bridge parameters during the rotation process and avoid the situation where construction is stopped for adjustment when parameter changes are within the preset range, in one embodiment, the BIM bridge three-dimensional simulation module builds a monitoring standard model based on bridge size, connection relationship, construction sequence, monitoring data, and a bridge rotation construction cluster library based on the Revit platform. The standard model displays safety graded color warnings according to the bridge posture, rotation speed, and moment distribution. By displaying safety graded color warnings according to the bridge posture, rotation speed, and moment distribution, the efficient operation of the rotation construction is guaranteed.

[0032] In order to further accurately control the safety threshold during the rotation construction process and ensure the efficiency of the construction, in one embodiment, the safety graded color warning includes green warning, yellow warning, orange warning and red warning. When the BIM bridge three-dimensional simulation module presents an orange warning or a red warning, the rotation construction is stopped and the jacking module is allowed to jack up the unbalanced position until it is restored to a green warning. The display of green monitoring points indicates that it is in a stable and safe state. At this time, daily patrol management can be carried out to check the data transmission situation and the deformation situation of BIM real-time simulation; when the rotation angular velocity, linear velocity, and horizontal rotation angular velocity are between 0.008 and 0.012 rad / min, the linear velocity of the cantilever end of the beam is greater than 1.2 to 1.4 m / min, and the continuous jack stroke difference is between 0.8 and 0.9 mm, the monitoring system sends a yellow warning instruction to the operating console, checks the on-site equipment, and records the warning information at the same time, and records the location and warning type of the warning. , warning value, normal value; when the angular velocity, linear velocity, and horizontal angular velocity are between 0.012 and 0.015 rad / min, the linear velocity of the cantilever end of the beam is between 1.4 and 1.5 m / min, and the continuous jack stroke difference is between 0.9 and 1.0 mm, the monitoring system sends a yellow warning command to the operating console, checks the on-site equipment, and records the warning information, as well as the location, type, value, and normal value of the warning; when the angular velocity, linear velocity, and horizontal angular velocity are greater than 0.015 rad / min, the linear velocity of the cantilever end of the beam is greater than 1.5 m / min, and the continuous jack stroke difference is greater than 1 m, the monitoring system sends a yellow warning command to the operating console, checks the on-site equipment, and records the warning information, as well as the location, type, value, and normal value of the warning. After receiving the notification from the internal team, the field team will arrive at the scene within 30 minutes with the equipment and immediately organize emergency repair work on the bridge. When an orange warning or above appears, the jacking system will lift the unbalanced position to restore it to a balanced state. At this time, the monitoring system enters a green warning, the jacking system stops working and continues to standby, and the monitoring system performs real-time monitoring. This process is repeated until the rotation is completed.

[0033] In order to improve the monitoring accuracy during the bridge rotation construction process, in one embodiment, the bridge sensor also monitors the bridge's beam end displacement and bridge body inclination parameters. By monitoring the displacement changes of the beam ends, this helps to detect potential structural abnormalities. For example, excessive displacement may indicate problems with the bridge support system or uneven settlement of the foundation, and monitoring the changes in the inclination angle of the bridge body to ensure the stability of the bridge during construction and use, and to ensure that the bridge remains within the designed safety range.

[0034] Based on the above-mentioned bridge rotation balance pressure monitoring system, the present invention also proposes a jacking adjustment method of the bridge rotation balance pressure monitoring system, comprising the following steps:

[0035] S1: Extract control parameters according to the construction design drawing, determine the early warning value of the control parameters of the bridge rotation result and the final position of the bridge;

[0036] S2: The BIM bridge 3D simulation module builds a monitoring standard model based on bridge size, connection relationship, construction sequence, and monitoring data;

[0037] S3: Obtain real-time monitoring data through bridge sensors and compare it with GNSS receiver data to initialize data;

[0038] S4: The data based on the GNSS receiver and bridge sensors are processed through the wireless data acquisition module and transmitted to the BIM bridge 3D simulation module;

[0039] S5: The BIM bridge 3D simulation module monitors the rotation process based on the received data;

[0040] S6: According to the preset monitoring data warning threshold, the installation safety level is divided and real-time monitoring is carried out;

[0041] S7: When the warning signal appears, the bridge restores balance when the operating console operates the jacking module;

[0042] S8: When the bridge rotates to the predetermined position, the rotation is stopped and the bridge parameters are continuously monitored to facilitate subsequent maintenance and construction.

[0043] By using BIM three-dimensional simulation models and sensor networks to provide precise real-time data, the construction process can be made more accurate and human errors can be reduced. Then, through sensors and GNSS technology, the bridge status can be monitored in real time, potential problems can be discovered and responded to in a timely manner, and construction safety can be improved. The early warning system prompts potential risks based on the set thresholds, and construction personnel can take immediate measures to reduce unexpected risks. At the same time, wireless transmission and automated processing of data reduce the complexity and time of manual operations and improve construction efficiency.

[0044] The above description 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 as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed 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 technical solution of the present invention.

Claims

1. A bridge rotation balance pressure monitoring system, characterized in that: It includes a bridge sensor, a GNSS receiver, a wireless data acquisition module and a BIM bridge three-dimensional simulation module. The bridge sensor is used to collect real-time stress and strain data of the on-site stress points of the bridge, the rotation angular velocity, rotation traction and rotation angle of the bridge rotation structure. The wireless data acquisition module includes a monitoring device and a processing module. The monitoring device is provided with a base station and four monitoring stations. The base station is located on the top surface of the erected beam section. The four monitoring stations are respectively located at the midpoint of the top surface of the two rotating bridges and the end points far away from the base station. The GNSS receiver is used to obtain the initial measuring point coordinates of the bridge end, the monitoring point, and the base point, and the real-time measuring point coordinates within the set monitoring time interval and transmit them to the wireless data acquisition system. The monitoring device will upload their respective coordinate information to the processing module in real time. The processing module will process the received data and transmit it to the BIM bridge three-dimensional simulation module to construct a rotation simulation model to monitor and warn the rotation process in real time.

2. A bridge rotation balance pressure monitoring system according to claim 1, characterized in that: The monitoring point of the base station is set to A, and the detection points on the two rotating bridges are set to B, C and D, E respectively. The monitoring point A forms two triangles with B, C and D, E respectively. The processing module calculates the length of each side of the two triangles according to the coordinate information uploaded by the base point and the monitoring point, and calculates the rotation angle, angular velocity and linear velocity according to the length of each side and the rotation radius of the beam. The processing module uploads the processed data to the BIM bridge three-dimensional simulation module for real-time monitoring.

3. A bridge rotation balance pressure monitoring system according to claim 1, characterized in that: It also includes a jacking module, which jacks up the unbalanced bridge according to the monitoring results of the BIM bridge three-dimensional simulation module to restore the balance of the bridge, and then the monitoring system continues to perform real-time monitoring.

4. A bridge rotation balance pressure monitoring system according to claim 3, characterized in that: The BIM bridge three-dimensional simulation module constructs a monitoring standard model based on bridge size, connection relationship, construction sequence, monitoring data and a bridge rotation construction cluster library based on the Revit platform. The standard model displays safety graded color warnings based on the bridge posture, rotation speed and torque distribution.

5. A bridge rotation balance pressure monitoring system according to claim 4, characterized in that: The safety graded color warning includes green warning, yellow warning, orange warning and red warning. When the BIM bridge three-dimensional simulation module presents an orange warning or a red warning, the rotation construction is stopped and the jacking module is allowed to jack up the unbalanced position until it returns to a green warning.

6. A bridge rotation balance pressure monitoring system according to claim 4, characterized in that: The bridge sensor also monitors the beam end displacement and bridge body inclination parameters of the bridge.

7. A lifting adjustment method for a bridge rotation balance pressure monitoring system, used in a bridge rotation balance pressure monitoring system according to any one of claims 4 to 6, characterized in that: The following steps are involved: S1: Extract control parameters according to the construction design drawing, determine the early warning value of the control parameters of the bridge rotation result and the final position of the bridge; S2: The BIM bridge 3D simulation module builds a monitoring standard model based on bridge size, connection relationship, construction sequence, and monitoring data; S3: Obtain real-time monitoring data through bridge sensors and compare it with GNSS receiver data to initialize data; S4: The data based on the GNSS receiver and bridge sensors are processed through the wireless data acquisition module and transmitted to the BIM bridge 3D simulation module; S5: The BIM bridge 3D simulation module monitors the rotation process based on the received data; S6: According to the preset monitoring data warning threshold, the installation safety level is divided and real-time monitoring is carried out; S7: When the warning signal appears, the bridge restores balance when the operating console operates the jacking module; S8: When the bridge rotates to the predetermined position, the rotation is stopped and the bridge parameters are continuously monitored to facilitate subsequent maintenance and construction.

Images