Swivel bridge counterweight effect real-time monitoring and corresponding adjustment method

Abstract

The present application relates to bridge rotation monitoring technical field, specifically relates to a kind of real-time monitoring and corresponding adjustment method of counterweight effect of swivel bridge, respectively install several groups of different sensors in different positions of swivel bridge, bridge inclination θ Real-time acquisition L And actual moment M of real-time position of bridge deck counterweight by sensor s , according to bridge inclination θ And pre-calibrated self-weight force arm function L (θ) Theoretical self-weight moment M 理论 , according to the theoretical self-weight moment M 理论 Unbalanced moment ΔM is calculated, the absolute value of ΔM obtained by calculation is taken, and the counterweight is dynamically adjusted according to the absolute value range of ΔM, the parameters after dynamic adjustment are updated in real time, and steps S2 to S3 are repeated until ΔM is maintained in M 理论 Limited error range, achieve the best counterweight effect, counterweight is more accurate, bridge reaches balanced state, swivel process is more stable, without additional re-calling work, thereby improve work efficiency, save time.

Description

Technical Field

[0001] This invention relates to the field of bridge rotation monitoring technology, specifically to a method for real-time monitoring and corresponding adjustment of the counterweight effect of a rotating bridge. Background Technology

[0002] During the rotation process, the swing bridge needs to rotate around a fixed point. The main function of the counterweight is to maintain the balance of the swing structure before and after the rotation by reasonably setting the weight distribution, so as to prevent instability such as tilting and overturning caused by the shift of the center of gravity of the structure, and ensure the safety and smooth progress of the rotation construction.

[0003] By setting counterweights at appropriate locations in the rotating structure, the center of gravity of the structure can be adjusted, reducing the torque required to overcome during rotation. This reduces the requirements for power equipment during rotation construction, decreases equipment power and traction, and lowers construction difficulty and cost. In the design and construction of rotating bridges, the reasonable setting of counterweights can make the structure more evenly and reasonably stressed during and after rotation, avoiding damage such as cracks and deformation caused by excessive local stress, improving the overall strength and stability of the bridge structure, and extending the service life of the bridge.

[0004] Traditional balancing methods for swing bridges often employ static calculation schemes, which cannot provide real-time feedback on dynamic changes during the balancing process, and the balancing effect cannot be reflected in real time. The traditional balancing method involves determining the balancing position on the bridge deck and balancing at that position based on experimental data. When the position is inaccurate or the weight of the balancing object varies, it is impossible to know whether the balancing effect is accurate. Therefore, a method for real-time monitoring and corresponding adjustment of the balancing effect of swing bridges is proposed. Summary of the Invention

[0005] To address the technical problems existing in the prior art, the present invention provides a method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge, comprising the following steps:

[0007] Step S1: Install several sets of sensors with different functions at different locations on the swing bridge, and collect the bridge tilt angle in real time through the sensors. Real-time position of bridge deck counterweight and actual torque ;

[0008] Step S2, based on the bridge inclination angle and the pre-calibrated gravitational lever arm function Calculate the theoretical moment of self-weight Then, based on the obtained theoretical self-weight torque Calculate unbalanced torque ;

[0009] Step S3, take the calculated result The absolute value, according to The absolute value range allows for dynamic adjustment of the counterweight;

[0010] Step S4: Update the dynamically adjusted parameters in real time and repeat steps S2 to S3 until... Maintain at Within the defined error range.

[0011] Preferably, in step S1, the sensors included are a high-precision tilt sensor, a displacement sensor, and a torque sensor. The high-precision tilt sensor is installed at the position of the rotating pier, the displacement sensor is installed on the surface of the bridge deck counterweight, and the torque sensor is installed at the position of the rotating bridge shaft.

[0012] Preferably, the high-precision tilt sensor has an accuracy of ±0.01°, a sampling frequency of ≥20Hz, and a data synchronization period between the high-precision tilt sensor and the torque sensor of ≤0.1 seconds.

[0013] Preferably, in step S2, the gravity arm function The gravity arm function is pre-calibrated using a BIM model or finite element analysis. This indicates the relationship between the inclination angle and the theoretical unbalanced load of a bridge. The expression is In the formula and For bridge structural parameters, and Calculated using a BIM model.

[0014] Preferably, the theoretical self-gravity torque The calculation formula is:

[0015] ;

[0016] Unbalanced torque The calculation formula is:

[0017] .

[0018] Preferably, in step S3, The absolute value range and the corresponding counterweight adjustment scheme are as follows:

[0019] when Maintain the current position of the counterweight and weight ;

[0020] when Adjust the position of the counterweight Maintain the weight of the counterweight ;

[0021] when Adjust the position of the counterweight and the weight of the counterweight .

[0022] Preferably, in step S3, the position of the counterweight is adjusted. and the weight of the counterweight When doing so, prioritize adjusting the weight of the counterweight. In the weight of the counterweight Adjust the position of the counterweight when the maximum volume is reached. .

[0023] Preferably, a slide rail is provided at the center of one end of the surface of the slewing bridge used for counterweight, and a tray for supporting the counterweight is provided on the surface of the slide rail, and the counterweight is placed on the tray and fixed.

[0024] Preferably, the slide rail surface has a through hole, and the tray is provided with a pin at the corresponding position of the slide rail. The tray maintains its relative position with the slide rail through the cooperation of the pin and the through hole.

[0025] Preferably, the counterweight consists of several sets of water storage tanks, which are connected to an external water supply pipeline.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. This invention can monitor the changes in bridge inclination data in real time during the counterweighting process, compare the changes in bridge inclination data with the theoretical model calculation data to obtain feedback after counterweight modification, and then adjust the counterweighting scheme in real time based on the feedback results to achieve the best counterweighting effect. The counterweighting is more accurate, the bridge reaches a balanced state, the rotation process is more stable, and no additional weighing work is required, thereby improving work efficiency and saving time. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the process of the present invention;

[0029] Figure 2 This is a schematic diagram of various parts of the rotating bridge of the present invention;

[0030] Figure 3 This is a schematic diagram comparing the change in tilt angle during the counterweighting process of the present invention with the theoretical value. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments, which illustrate the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0032] Example:

[0033] like Figures 1-3 As shown, the present invention provides a method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge, characterized by comprising the following steps:

[0034] Step S1: A counterweight is installed on the surface of the swing bridge. A slide rail is installed at the center of one end of the swing bridge surface used for the counterweight. A tray for supporting the counterweight is installed on the surface of the slide rail. The counterweight is placed on the tray and fixed. A through hole is opened on the surface of the slide rail. A pin is installed at the corresponding position of the tray and the slide rail. The tray maintains its relative position with the slide rail through the cooperation of the pin and the through hole. The counterweight consists of several sets of water storage tanks, which are connected to an external water supply pipeline. The weight of the counterweight... During adjustments, the external water supply pipeline injects water into the storage tank at a constant rate;

[0035] Several sets of sensors with different functions are installed at different locations on the swing bridge to collect the bridge's tilt angle in real time. Real-time position of bridge deck counterweight and actual torque The sensors included are a high-precision tilt sensor, a displacement sensor, and a torque sensor. The high-precision tilt sensor is installed at the position of the rotating pier, the displacement sensor is installed on the surface of the bridge deck counterweight, and the torque sensor is installed at the position of the rotating bridge shaft. The high-precision tilt sensor has an accuracy of ±0.01°, a sampling frequency of ≥20Hz, and a data synchronization period of ≤0.1 seconds between the high-precision tilt sensor and the torque sensor.

[0036] Step S2, based on the bridge inclination angle and the pre-calibrated gravitational lever arm function Calculate the theoretical moment of self-weight Then, based on the obtained theoretical self-weight torque Calculate unbalanced torque ;

[0037] The gravity arm function The gravity arm function is pre-calibrated using a BIM model or finite element analysis. This indicates the relationship between the inclination angle and the theoretical unbalanced load of a bridge. The expression is In the formula and For bridge structural parameters, and Calculated using a BIM model;

[0038] The theoretical self-gravity moment The calculation formula is:

[0039] ;

[0040] Unbalanced torque The calculation formula is:

[0041] .

[0042] Step S3, take the calculated result The absolute value, according to The absolute value range allows for dynamic adjustment of the counterweight;

[0043] The absolute value range and the corresponding counterweight adjustment scheme are as follows:

[0044] when Maintain the current position of the counterweight and weight ;

[0045] when Adjust the position of the counterweight Maintain the weight of the counterweight ;

[0046] when Adjust the position of the counterweight and the weight of the counterweight .

[0047] Step S4: Update the dynamically adjusted parameters in real time and repeat steps S2 to S3 until... Maintain at Within the defined error range.

[0048] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge, characterized in that, Includes the following steps: Step S1: Install several sets of sensors with different functions at different locations on the swing bridge, and collect the bridge tilt angle in real time through the sensors. Real-time position of bridge deck counterweight and actual torque ; Step S2, based on the bridge inclination angle and the pre-calibrated gravitational lever arm function Calculate the theoretical moment of self-weight Then, based on the obtained theoretical self-weight torque Calculate unbalanced torque ; Step S3: Obtain the calculated unbalanced torque. The absolute value, based on the unbalanced torque The absolute value range is used to dynamically adjust the counterweight object; Step S4: Update the dynamically adjusted parameters in real time and repeat steps S2 to S3 until the unbalanced torque is reached. Maintain at Within the defined error range.

2. The method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge as described in claim 1, characterized in that, In step S1, the sensors included a high-precision tilt sensor, a displacement sensor, and a torque sensor. The high-precision tilt sensor was installed at the position of the rotating pier, the displacement sensor was installed on the surface of the bridge deck counterweight, and the torque sensor was installed at the position of the rotating bridge shaft.

3. The method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge as described in claim 2, characterized in that, The high-precision tilt sensor has an accuracy of ±0.01°, a sampling frequency of ≥20Hz, and a data synchronization period between the high-precision tilt sensor and the torque sensor of ≤0.1 seconds.

4. The method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge as described in claim 1, characterized in that, In step S2, the gravity arm function The gravity arm function is pre-calibrated using a BIM model or finite element analysis. This indicates the relationship between the inclination angle and the theoretical unbalanced load of a bridge. The expression is In the formula and For bridge structural parameters, and Calculated using a BIM model.

5. The method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge as described in claim 1, characterized in that, The theoretical self-gravity moment The calculation formula is: ； Unbalanced torque The calculation formula is: 。 6. The method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge as described in claim 4, characterized in that, In step S3 The absolute value range and the corresponding counterweight adjustment scheme are as follows: when Maintain the current position of the counterweight and weight ; when Adjust the position of the counterweight Maintain the weight of the counterweight ; when Adjust the position of the counterweight and the weight of the counterweight .

7. The method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge as described in claim 6, characterized in that, In step S3, adjusting the position of the counterweight and the weight of the counterweight When doing so, prioritize adjusting the weight of the counterweight. In the weight of the counterweight Adjust the position of the counterweight when the maximum volume is reached. .

8. The method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge as described in claim 6, characterized in that, A slide rail is provided at the center of one end of the surface of the slewing bridge used for counterweight. A tray for supporting the counterweight is provided on the surface of the slide rail. The counterweight is placed on the tray and fixed.

9. The method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge as described in claim 8, characterized in that, The slide rail surface has through holes, and the tray is provided with a pin at the corresponding position of the slide rail. The tray maintains its relative position with the slide rail through the cooperation of the pin and the through hole.

10. The method for real-time monitoring and corresponding adjustment of the counterweight effect of a swing bridge as described in claim 8, characterized in that, The counterweight consists of several sets of water storage tanks, which are connected to an external water supply pipeline.

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