Segmental beam asynchronous eccentric installation intelligent cable adjustment system and method

Abstract

The application belongs to the technical field of bridge construction equipment, and specifically provides an intelligent cable adjustment system and method for segmental beam asynchronous eccentric installation, which comprises a plurality of reverse-pulling corbels, a plurality of steel strands, a plurality of carrying beams, a plurality of adjustment devices and a control device, the right part of the Y-shaped bent cap is connected with the carrying beam, the carrying beam is connected with the plurality of adjustment devices, the side of the T-shaped pier body away from the segmental beam is connected with the plurality of reverse-pulling corbels, and the adjustment devices and the reverse-pulling corbels are connected through the steel strands; the control device is electrically connected with the plurality of adjustment devices; the problems that the segmental beam installation flexibility of the whole large cantilever bent cap is poor, the eccentricity of the pier is prone to occurring during the installation process of the segmental beam, real-time monitoring and accurate control of the installation state of the segmental beam cannot be achieved, and the like are solved; the eccentricity of the pier is quickly and effectively corrected, the accuracy of the segmental beam installation is ensured, real-time accurate monitoring and control of the segmental beam installation process are achieved, and the construction efficiency and the installation quality are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of bridge construction equipment, specifically relating to an intelligent cable adjustment system and method for asynchronous eccentric installation of segmental beams. Background Technology

[0002] In bridge construction, monolithic cantilever piers, due to their unique structural characteristics, can effectively increase the span capacity and space utilization of bridges, and are widely used in urban viaducts, large-scale cross-river and cross-sea bridges, and other projects. However, the segmental beam construction of monolithic cantilever piers, especially when using asynchronous eccentric construction techniques, faces many challenges.

[0003] In existing technologies, segmental beam installation often employs conventional synchronous installation methods. However, for large cantilever bridge piers, this method lacks flexibility when facing complex terrain and structural stress conditions. Furthermore, due to the stress characteristics of large cantilever bridge piers, eccentricity issues can easily occur during segmental beam installation. If these issues are not addressed promptly and effectively, they can adversely affect the overall structural stability and safety of the pier. Moreover, traditional installation methods struggle to monitor and precisely control the installation status of segmental beams in real time, failing to meet the high precision and efficiency requirements of modern bridge construction. Therefore, developing an intelligent cable adjustment system and installation method for asynchronous eccentric installation of segmental beams suitable for integral large cantilever cap beams is of significant practical importance.

[0004] Chinese patent document CN205313986U discloses an eccentric lifting device for segmental beams, comprising an upper lifting and adjustment system and a lower segmental beam connection system. The upper lifting and adjustment system includes a pulley block assembly, a connector assembly, an upper hanging frame, and a transverse upper beam. A first transverse sliding track is provided on the upper beam, and the upper hanging frame moves horizontally along the first transverse sliding track. The lower segmental beam connection system includes a hanging beam and a balance beam. A second transverse sliding track is provided at the bottom of the hanging beam, and the balance beam can move horizontally along the second transverse sliding track. The segmental beam to be lifted is suspended and fixed at the bottom of the balance beam. The horizontal movement of the upper hanging frame along the first transverse sliding track and the horizontal movement of the balance beam along the second transverse sliding track ensure that the center of the segmental beam and the hook lifting point of the connector assembly of the upper lifting and adjustment system are on the same vertical line during lifting. This paper achieves eccentric lifting of segmental beams, which improves the efficiency and safety of eccentric segmental beam lifting operations as a whole; however, it does not solve the problems of poor installation flexibility of existing integral large cantilever cap beam segmental beams, difficulty in handling the eccentricity of bridge piers during the installation of segmental beams, and inability to monitor and control the installation status in real time. Summary of the Invention

[0005] The present invention provides an intelligent cable adjustment system and method for asynchronous eccentric installation of segmental beams. The purpose is to overcome the problems in the existing technology of poor installation flexibility of integral large cantilever cap beam segmental beams, difficulty in handling the problem of eccentricity of bridge piers during the installation of segmental beams, and inability to monitor and accurately control the installation status of segmental beams in real time, which cannot meet the requirements of high precision and high efficiency in modern bridge construction.

[0006] To address this, the present invention provides an asynchronous eccentric installation intelligent cable adjustment system for segmental beams. The TY composite pier includes a Y-shaped cap beam and a T-shaped pier body. The Y-shaped cap beam is connected to the T-shaped pier body. Segmental beams are installed on the upper left side of the Y-shaped cap beam. The intelligent cable adjustment system includes multiple anti-tension brackets, multiple steel strands, multiple spreader beams, multiple adjustment devices, and a control device. The spreader beams are connected to the upper right side of the Y-shaped cap beams. Multiple adjustment devices are connected to the spreader beams. Multiple anti-tension brackets are connected to the side of the T-shaped pier body away from the segmental beams. The adjustment devices and anti-tension brackets are connected by steel strands. The control device is electrically connected to the multiple adjustment devices.

[0007] Preferably, the intelligent cable adjustment system includes a monitor, which is connected to the TY composite pier, segmental beam, and steel strand, and the monitor is electrically connected to a control device.

[0008] Preferably, the adjusting device is an electro-hydraulic jack.

[0009] Preferably, the steel strand is epoxy-coated steel strand.

[0010] Preferably, the monitor includes a pressure sensor, a displacement sensor, a stress sensor, a tension sensor, and a total station.

[0011] Preferably, a tension sensor is connected to the steel strand.

[0012] Preferably, pressure sensors, displacement sensors, and stress sensors are connected to the TY composite piers and segmental beams.

[0013] An adjustment method based on the aforementioned segmental beam asynchronous eccentric installation intelligent cable adjustment system includes the following steps: S1. Install anti-tension brackets on the side of the T-shaped pier that is away from the segmental beam, and install a spreader beam on the Y-shaped cap beam that is away from the segmental beam. S2. Connect the spreader beam and the anti-tension bracket into a whole using steel strands; S3. Monitors are installed on the steel strands, Y-shaped cap beams and segmental beams. The monitors are used to monitor the tension of the steel strands and the stress of the TY composite piers, and transmit the acquired monitoring data to the control device. S4. Install an adjustment device on the spreader beam and connect the adjustment device to the steel strand; S5. The control device controls the adjustment device based on the acquired monitoring data. The adjustment device controls the adjustment steel strands to keep the pressure on both ends of the TY composite bridge pier balanced and prevent eccentricity.

[0014] Preferably, the construction data includes at least pressure data and displacement data.

[0015] Preferably, the adjustment device is used to adjust the tensioning of the steel strand.

[0016] The beneficial effects of this invention are: This invention provides an intelligent cable adjustment system and method for asynchronous eccentric installation of segmental beams. A monitor can monitor the eccentricity of the bridge piers during segmental beam installation in real time, and a control device controls an adjustment device to adjust the steel strands, quickly and effectively correcting the pier eccentricity and ensuring the accuracy of segmental beam installation. This improves the structural stability and safety of integral cantilever bridge piers. This invention can precisely adjust the tension of the steel strands. The coordinated work of the monitor and control device allows construction personnel to monitor the stress state of the bridge piers in real time. The control device can issue precise adjustment commands based on the monitoring data, achieving real-time and accurate monitoring and control of the segmental beam installation process, improving construction efficiency and installation quality. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Figure 1 This is the main structural view of the segmental beam asynchronous eccentric installation intelligent cable adjustment system; Figure 2 This is the right structural view of the segmental beam asynchronous eccentric installation intelligent cable adjustment system; Figure 3 This is the top structural main view of the segmental beam asynchronous eccentric installation intelligent cable adjustment system; Figure 4 This is a structural diagram of the segmental beam erection construction; Figure 5 This is a flowchart of the adjustment method for the intelligent cable adjustment system for asynchronous eccentric installation of segmental beams.

[0019] Explanation of reference numerals in the attached drawings: 1. Anti-tension bracket; 2. Steel strand; 3. Spreader beam; 4. Adjustment device; 5. Segmental beam; 6. Support leg of the bridge erecting machine; 7. Pressure sensor and displacement sensor; 8. Surface stress sensor; 9. TY composite pier; 9.1. Y-shaped cap beam; 9.2. T-shaped pier body. Detailed Implementation

[0020] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0021] Example 1: A segmental beam asynchronous eccentric installation intelligent cable adjustment system is disclosed. The TY composite pier 9 includes a Y-shaped cap beam 9.1 and a T-shaped pier body 9.2. The Y-shaped cap beam 9.1 is connected to the T-shaped pier body 9.2. The segmental beam 5 is installed on the upper left part of the Y-shaped cap beam 9.1. The intelligent cable adjustment system includes multiple anti-tension brackets 1, multiple steel strands 2, multiple spreader beams 3, multiple adjustment devices 4, and a control device. The spreader beams 3 are connected to the upper right part of the Y-shaped cap beam 9.1. Multiple adjustment devices 4 are connected to the spreader beams 3. Multiple anti-tension brackets 1 are connected to the side of the T-shaped pier body 9.2 away from the segmental beam 5. The adjustment devices 4 and the anti-tension brackets 1 are connected by steel strands 2. The control device is electrically connected to the multiple adjustment devices 4.

[0022] Specifically, the adjusting device 4 and the anti-tension bracket 1 are connected by steel strands 2 to ensure that the arrangement of the steel strands 2 meets the stress requirements of the segmental beam 5 installation. That is, when the segmental beam 5 is erected on the TY composite pier 9, the side of the TY composite pier 9 away from the segmental beam 5 generates an upward tension. The downward tension of the steel strands 2 on this side is greater than the upward tension generated by the TY composite pier 9. The adjusting device 4 is controlled by the control device, and the steel strands 2 are adjusted by the adjusting device 4 to quickly and effectively correct the eccentricity of the pier, ensure the accuracy of the segmental beam installation, and thus improve the structural stability and safety of the integral large cantilever pier.

[0023] Example 2: Based on Example 1, the intelligent cable adjustment system includes a monitor. The monitor is connected to the TY composite pier 9, the segmental beam 5, and the steel strand 2. The monitor is electrically connected to the control device.

[0024] Specifically, the monitor can monitor the eccentricity of the piers during the segmental beam installation in real time, and the control device controls the adjustment device 4, which in turn adjusts the steel strands 2 to quickly and effectively correct the pier eccentricity, ensuring the accuracy of the segmental beam installation and thus improving the structural stability and safety of the integral large cantilever pier. This invention can precisely adjust the tension of the steel strands 2. The coordinated work of the monitor and control device allows construction personnel to monitor the stress state of the piers in real time, and the control device can issue precise adjustment commands based on the monitoring data, achieving real-time and precise monitoring and control of the segmental beam installation process, improving construction efficiency and installation quality.

[0025] Preferably, the adjusting device 4 is an electric hydraulic jack.

[0026] Specifically, the tension of the two steel strands is adjusted by an electric hydraulic jack, which is precise, controllable, highly synchronized, safe, reliable, and compatible with intelligent monitoring.

[0027] Preferably, the steel strand 2 is an epoxy steel strand.

[0028] Specifically, epoxy steel strand has good corrosion resistance and durability, stable mechanical properties, and strong compatibility with electric hydraulic jacks.

[0029] Preferably, the monitor includes a pressure sensor, a displacement sensor, a stress sensor, a tension sensor, and a total station.

[0030] Specifically, pressure sensors, displacement sensors, stress sensors, tension sensors, and total stations are used to acquire the necessary relevant data. For example, pressure sensors monitor pressure data at the location, displacement sensors monitor displacement data at the location, stress sensors monitor stress data at the location, tension sensors monitor tension data at the location, and total stations are used for high-precision measurement of the axis of TY composite pier 9, the plane position of Y-shaped cap beam 9.1, the linearity of segmental beam 5, and the lateral eccentric load displacement, providing data support for construction safety.

[0031] Preferably, a tension sensor is connected to the steel strand 2.

[0032] Specifically, by installing a tension sensor on the steel strand 2, it is easy to measure the tension of the steel strand 2 and ensure measurement accuracy.

[0033] Preferably, pressure sensors, displacement sensors, and stress sensors are connected to the TY composite pier 9 and the segmental beam 5.

[0034] Specifically, pressure sensors, displacement sensors, and stress sensors facilitate real-time monitoring of the stress on TY composite pier 9.

[0035] Example 3: Based on Example 2, such as Figure 5 As shown, an adjustment method based on the aforementioned segmental beam asynchronous eccentric installation intelligent cable adjustment system includes the following steps: S1. Install anti-tension bracket 1 on the side of T-shaped pier 9.2 away from segmental beam 5, and install spreader beam 3 on Y-shaped cap beam 9.1 away from segmental beam 5; S2. Connect the spreader beam 3 and the anti-tension bracket 1 into a whole by using steel strand 2; S3. Monitors are installed on the steel strand 2, the Y-shaped cap beam 9.1 and the segmental beam 5. The monitors are used to monitor the tension of the steel strand 2 and the stress of the TY composite pier 9, and transmit the acquired monitoring data to the control device. Specifically, the total station is positioned near the bridge deck of the TY composite pier 9 to monitor the axis of the TY composite pier 9. The pressure sensor and displacement sensor 7 are positioned on the pier body below the support leg 6 of the bridge erecting machine. The surface stress sensor 8 is positioned on the Y-shaped cap beam 9.1 to measure the stress of the Y-shaped cap beam 9.1.

[0036] S4. Install the adjusting device 4 on the spreader beam 3, and connect the adjusting device 4 to the steel strand 2; S5. The control device controls the adjustment device 4 based on the acquired monitoring data. The adjustment device 4 controls the adjustment of the steel strand 2 to keep the pressure on both ends of the TY composite pier 9 balanced and prevent eccentricity.

[0037] The monitor and control device are connected remotely via wireless signal for data transmission testing. Based on the data fed back from the monitor, the control device adjusts the tension of the steel strand 2 through the adjustment device 4.

[0038] When the segmental beam 5 begins to be hoisted, the control device analyzes and processes the data transmitted by the monitor and sends an adjustment command to the adjustment device 4. Based on monitored data such as the magnitude of the force on the TY composite pier 9 (e.g., pressure sensors above the TY composite pier 9 detect upward tension on the side of the TY composite pier 9 furthest from the segmental beam 5, and displacement sensors detect displacement under these forces), the control device calculates the tension value of the steel strand 2 that needs adjustment. Based on this tension value, the control device sends a wireless communication command to the adjustment device 4. The adjustment device 4 responds quickly and precisely adjusts the tension of the steel strand 2 to ensure that the forces on both sides of the TY composite pier 9 are consistent and that eccentricity does not occur. The control device is an existing device; its structure and data analysis process will not be described in detail here.

[0039] Preferably, the adjustment device 4 is adjusted by tensioning the steel strand 2. This provides precise force control, rapid response, strong adaptability, and durability.

[0040] In the description of this invention, it should be understood that if terms such as "left," "inner," or "right" indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, it does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention.

[0041] The above examples are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A segmental beam asynchronous eccentric installation intelligent cable adjustment system, wherein the TY composite pier (9) includes a Y-shaped cap beam (9.1) and a T-shaped pier body (9.2), the Y-shaped cap beam (9.1) is connected to the T-shaped pier body (9.2), and a segmental beam (5) is installed on the left side of the upper part of the Y-shaped cap beam (9.1), characterized in that: The intelligent cable adjustment system includes multiple anti-pull brackets (1), multiple steel strands (2), multiple spreader beams (3), multiple adjustment devices (4), and a control device. The spreader beams (3) are connected to the right side of the Y-shaped cap beam (9.1), and multiple adjustment devices (4) are connected to the spreader beams (3). Multiple anti-pull brackets (1) are connected to the side of the T-shaped pier (9.2) away from the segment beam (5). The adjustment devices (4) and the anti-pull brackets (1) are connected by steel strands (2). The control device is electrically connected to multiple adjustment devices (4).

2. The segmental beam asynchronous eccentric installation intelligent cable adjustment system as described in claim 1, characterized in that: The intelligent cable adjustment system includes a monitor. The monitor is connected to the TY composite pier (9), the segmental beam (5) and the steel strand (2). The monitor is electrically connected to the control device.

3. The segmental beam asynchronous eccentric installation intelligent cable adjustment system as described in claim 1, characterized in that: The adjusting device (4) is an electric hydraulic jack.

4. The segmental beam asynchronous eccentric installation intelligent cable adjustment system as described in claim 1, characterized in that: The steel strand (2) is an epoxy steel strand.

5. The segmental beam asynchronous eccentric installation intelligent cable adjustment system as described in claim 2, characterized in that: The monitor includes a pressure sensor, a displacement sensor, a stress sensor, a tension sensor, and a total station.

6. The segmental beam asynchronous eccentric installation intelligent cable adjustment system as described in claim 5, characterized in that: A tension sensor is connected to the steel strand (2).

7. The segmental beam asynchronous eccentric installation intelligent cable adjustment system as described in claim 5, characterized in that: Pressure sensors, displacement sensors, and stress sensors are connected to the TY composite pier (9) and segmental beam (5).

8. A method for adjusting the segmental beam asynchronous eccentric installation intelligent cable adjustment system according to any one of claims 1-7, characterized in that: Includes the following steps: S1. Install anti-tension bracket (1) on the side of the T-shaped pier (9.2) away from the segmental beam (5), and install spreader beam (3) on the Y-shaped cap beam (9.1) away from the segmental beam (5). S2. Connect the spreader beam (3) and the anti-tension bracket (1) into a whole by means of steel strand (2); S3. Monitors are installed on the steel strand (2), Y-shaped cap beam (9.1) and segment beam (5). The monitors are used to monitor the tension of the steel strand (2) and the stress of the TY composite pier (9), and transmit the acquired monitoring data to the control device. S4. Install the adjusting device (4) on the spreader beam (3) and connect the adjusting device (4) to the steel strand (2). S5. The control device controls the adjustment device (4) based on the acquired monitoring data. The adjustment device (4) controls the adjustment steel strand (2) to keep the pressure on both ends of the TY composite pier (9) balanced and prevent eccentricity.

9. The method for adjusting the intelligent cable of asynchronous eccentric installation of segmental beams as described in claim 8, characterized in that: The adjustment device (4) is adjusted by tensioning the steel strand (2).

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