Real-time monitoring and corresponding adjusting method for balance weight effect of swivel bridge

Abstract

The invention relates to the technical field of bridge swivel monitoring, in particular to a swivel bridge counterweight effect real-time monitoring and corresponding adjusting method, which comprises the following steps of: respectively installing a plurality of groups of sensors with different functions at different positions of a swivel bridge, and acquiring a bridge inclination angle theta, a real-time position L of a bridge floor counterweight and an actual moment Ms in real time through the sensors; the method comprises the following steps: calculating a theoretical self-weight moment Mtheory according to a bridge inclination angle theta and a pre-calibrated self-weight moment arm function L (theta), calculating an unbalanced moment delta M according to the obtained theoretical self-weight moment Mtheory, taking an absolute value of the calculated delta M, dynamically adjusting a counterweight according to an absolute value range of the delta M, updating dynamically adjusted parameters in real time, and repeating the steps S2 to S3, and the best counterweight effect is achieved, counterweight is more accurate, the bridge reaches a balanced state, the rotating process is more stable, additional re-weighing work is not needed, and therefore the working efficiency is improved, and time is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge rotation monitoring, and in particular to a method for real-time monitoring and corresponding adjustment of the counterweight effect of a rotating bridge. Background Art

[0002] During the rotation process, the rotating bridge needs to rotate around a fixed point. The main function of the counterweight is to ensure that the rotating structure maintains a balanced state before and after the rotation by properly setting the weight distribution, preventing instability such as tilting and rollover caused by the shift of the center of gravity of the structure, and ensuring the safety and smooth progress of the rotation construction.

[0003] By setting counterweights at appropriate locations on the rotating structure, the center of gravity of the structure can be adjusted, reducing the rotational torque that needs to be overcome during rotation. This can reduce the requirements for power equipment during the rotation construction process, reduce the power and traction of the equipment, and reduce 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 the rotation process and in the use stage after the rotation is completed, avoiding damage such as cracks and deformation in the structure 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 rotating bridge counterweights mostly use static calculation counterweight solutions, which cannot provide real-time feedback on dynamic changes in the counterweight process, and the counterweight effect cannot be reflected in real time. The traditional counterweight method is to determine the counterweight position on the bridge deck and apply the counterweight at that position based on the test data. When the position is inaccurate or the weight of the counterweight varies, it is impossible to understand whether the counterweight effect is accurate. Therefore, a real-time monitoring and corresponding adjustment method for the counterweight effect of a rotating bridge is proposed. Summary of the Invention

[0005] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a method for real-time monitoring and corresponding adjustment of the counterweight effect of a rotating bridge.

[0006] To solve the above 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 rotating bridge, comprising the following steps:

[0007] Step S1: Install several sets of sensors with different functions at different positions of the rotating bridge, and use the sensors to collect the bridge inclination angle θ, the real-time position L of the bridge deck counterweight and the actual torque M in real time. s ;

[0008] Step S2: Based on the bridge inclination angle θ and the pre-calibrated self-weight arm function L (θ) Calculate the theoretical self-weight moment M 理论 , and then according to the theoretical self-weight moment M 理论 Calculate the unbalanced moment ΔM;

[0009] Step S3: Take the absolute value of the calculated ΔM, and dynamically adjust the counterweight according to the absolute value range of ΔM;

[0010] Step S4: Update the parameters after dynamic adjustment in real time, and repeat Steps S2 to S3 until ΔM is maintained within the error range defined by M. 理论

[0011] Preferably, in Step S1, the sensors set include a high-precision inclination sensor, a displacement sensor, and a torque sensor. The high-precision inclination 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 rotating shaft.

[0012] Preferably, the precision of the high-precision inclination sensor is ±0.01°, the sampling frequency of the high-precision inclination sensor is ≥20Hz, and the data synchronization period of the high-precision inclination sensor and the torque sensor is ≤0.1 second.

[0013] Preferably, in Step S2, the self-gravity arm function L (θ) is pre-calibrated through a BIM model or finite element analysis. The self-gravity arm function L (θ) represents the relationship between the inclination angle and the theoretical unbalanced weight of the bridge, and the expression of L (θ) is L (θ) = K1·sinθ + K2·θ, where K1 and K2 are bridge structure parameters and are calculated through the BIM model.

[0014] Preferably, the calculation formula for the theoretical self-gravity moment M 理论 is:

[0015] M 理论 = G·L (θ) Mg = G·L (θ) ;

[0016] The calculation formula for the unbalanced moment ΔM is:

[0017] ΔM = M s - M 理论 。

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

[0019] When |ΔM| ≤ 5%M 理论 maintain the current position L and weight w of the counterweight;

[0020] When 5% < |ΔM| ≤ 20%M 理论 adjust the position L of the counterweight and maintain the weight w of the counterweight;

[0021] When |ΔM| > 20%M​理论 Adjust the counterweight position L and the counterweight weight w at this time.

[0022] Preferably, in step S3, when adjusting the counterweight position L and the counterweight weight w, the counterweight weight w is preferentially adjusted, and the counterweight position L is adjusted when the counterweight weight w reaches the maximum amount.

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

[0024] Preferably, through holes are provided on the surface of the slide rail, pins are provided at the corresponding positions of the tray and the slide rail, and the tray maintains its relative position with the slide rail through the cooperation of the pins and the through holes.

[0025] Preferably, the counterweight consists of a plurality of groups of water storage tanks, and the water storage tanks 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] The present invention can monitor the change of the bridge inclination angle data in real time during the counterweight process, compare the change of the bridge inclination angle data with the calculation data of the theoretical model to obtain the feedback after the counterweight is modified, and then adjust the counterweight scheme in real time according to the feedback result to achieve the best counterweight effect. The counterweight is more accurate, the bridge reaches a balanced state, the rotating process is smoother, and there is no need for additional weighing work, thereby improving work efficiency and saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 [[ID=2�]]is a schematic flow chart of the present invention;

[0029] Figure 2 is a schematic diagram of each part of the rotating bridge of the present invention;

[0030] Figure 3 is a schematic diagram of the comparison between the inclination angle change during the counterweight process of the present invention and the theoretical value. DETAILED DESCRIPTION OF THE INVENTION

[0031] The following further elaborates the present invention in combination with the drawings and embodiments. The following embodiments are only the preferred embodiments of the present invention, not all of them.

[0032] Embodiment:

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

[0034] Step S1, set counterweights on the surface of the slewing bridge. A slide rail is arranged at the center position of one end of the surface of the slewing bridge for counterweight. A tray for supporting the counterweight is arranged on the surface of the slide rail. The counterweight is arranged on the tray and fixed. Through holes are formed in the surface of the slide rail. Bolts are arranged at the corresponding positions of the tray and the slide rail. The tray maintains its relative position with the slide rail through the cooperation of the bolts and the through holes. The counterweight consists of several groups of water storage tanks, and the water storage tanks are connected to an external water supply pipeline. When adjusting the weight w of the counterweight, the external water supply pipeline injects water into the water storage tanks at a constant amount.

[0035] Install several groups of sensors with different functions at different positions of the slewing bridge, and collect the bridge inclination angle θ, the real-time position L of the bridge deck counterweight, and the actual torque M in real time through the sensors. s , the sensors set include high-precision inclination sensors, displacement sensors, and torque sensors. The high-precision inclination sensors are installed at the positions of the slewing bridge piers, the displacement sensors are installed on the surface of the bridge deck counterweight, and the torque sensors are installed at the positions of the slewing bridge rotating shafts. The precision of the high-precision inclination sensors is ±0.01°, the sampling frequency of the high-precision inclination sensors is ≥20Hz, and the data synchronization period of the high-precision inclination sensors and the torque sensors is ≤0.1 second.

[0036] Step S2, according to the bridge inclination angle θ and the pre-calibrated self-gravity arm function L (θ) calculate the theoretical self-gravity torque M 理论 , and then calculate the unbalanced torque ΔM according to the obtained theoretical self-gravity torque M 理论 .

[0037] The self-gravity arm function L (θ) is pre-calibrated through a BIM model or finite element analysis. The self-gravity arm function L (θ) represents the relationship between the inclination angle and the theoretical unbalanced weight of the bridge. The expression of L (θ) is L (θ) =K1·sinθ + K2·θ, where K1 and K2 are bridge structure parameters, and K1 and K2 are calculated through the BIM model.

[0038] The calculation formula for the theoretical self-gravity torque M 理论 is:

[0039] M 理论 =G·L (θ) Mg = G·L (θ) ;

[0040] The calculation formula for the unbalanced torque ΔM is:

[0041] ΔM = M s -M 理论 .

[0042] Step S3: Take the absolute value of the calculated ΔM, and dynamically adjust the counterweight according to the range of the absolute value of ΔM;

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

[0044] When |ΔM| ≤ 5%M 理论 maintain the current position L and weight w of the counterweight;

[0045] When 5% < |ΔM| ≤ 20%M 理论 adjust the position L of the counterweight and maintain the weight w of the counterweight;

[0046] When |ΔM| > 20%M 理论 adjust the position L of the counterweight and the weight w of the counterweight.

[0047] Step S4: Update the parameters after dynamic adjustment in real time and repeat Steps S2 to S3 until ΔM is maintained within the error range defined by M 理论 specified.

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

Claims

1. A real-time monitoring and corresponding adjustment method for the counterweight effect of a swivel bridge, characterized in that It includes the following steps: Step S1, install several groups of sensors with different functions at different positions of the swing bridge, and collect the bridge inclination angle θ, the real-time position L of the bridge deck counterweight, and the actual torque M in real time through the sensors s ; Step S2, according to the bridge inclination angle θ and the pre-calibrated self-gravity arm function L (θ) calculate the theoretical self-gravity moment M 理论 , and then according to the obtained theoretical self-gravity moment M 理论 calculate the unbalanced moment ΔM; Step S3: Take the absolute value of the calculated unbalanced moment ΔM, and dynamically adjust the counterweight according to the absolute value range of the unbalanced moment ΔM. Step S4, update the parameters after dynamic adjustment in real time and repeat Steps S2 to S3 until the unbalanced torque ΔM is maintained within the error range defined by M. 理论 ​ 2. The real-time monitoring and corresponding adjustment method for the counterweight effect of a swivel bridge according to claim 1, characterized in that, In the said step S1, the sensors set include a high-precision inclination sensor, a displacement sensor, and a torque sensor. The high-precision inclination 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.

3. The real-time monitoring and corresponding adjustment method for the counterweight effect of a swivel bridge according to claim 2, characterized in that, The precision of the high-precision inclination sensor is ±0.01°, the sampling frequency of the high-precision inclination sensor is ≥20Hz, and the data synchronization period of the high-precision inclination sensor and the torque sensor is ≤0.1 second.

4. The real-time monitoring and corresponding adjustment method for the counterweight effect of a swivel bridge according to claim 1, characterized in that, In the step S2, the self-gravity arm function L (θ) is pre-calibrated through a BIM model or finite element analysis. The self-gravity arm function L (θ) represents the relationship between the inclination angle and the theoretical unbalanced weight of the bridge. The expression of L (θ) is L (θ) = K1·sinθ + K2·θ, where K1 and K2 are bridge structure parameters and are calculated through the BIM model.

5. The real-time monitoring and corresponding adjustment method for the counterweight effect of a swivel bridge according to claim 1, characterized in that The theoretical self-gravity moment M 理论 The calculation formula is as follows: M 理论 = G·L (θ) Mg = G·L (θ) ; The calculation formula of the unbalanced moment ΔM is: ΔM = M s -M 理论 。 6. The real-time monitoring and corresponding adjustment method for the counterweight effect of a swivel bridge according to claim 4, characterized in that, In the said step S3, the absolute value range of ΔM and the corresponding counterweight adjustment scheme are: When |ΔM| ≤ 5%M 理论 maintain the current position L and weight w of the counterweight; When 5% < |ΔM| ≤ 20%M 理论 adjust the position L of the counterweight and maintain the weight w of the counterweight; When |ΔM| > 20%M 理论 Adjust the counterweight position L and the counterweight mass w.

7. The real-time monitoring and corresponding adjustment method for the counterweight effect of a swivel bridge according to claim 6, characterized in that, In the said step S3, when adjusting the position L of the counterweight and the weight w of the counterweight, the weight w of the counterweight is adjusted preferentially, and when the weight w of the counterweight reaches the maximum amount, the position L of the counterweight is adjusted.

8. The real-time monitoring and corresponding adjustment method for the counterweight effect of a swivel bridge according to claim 6, characterized in that A slide rail is provided at the center position of one end of the surface of the rotating bridge for counterweight. A tray for supporting the counterweight is provided on the surface of the slide rail, and the counterweight is arranged and fixed on the tray.

9. The real-time monitoring and corresponding adjustment method for the counterweight effect of a swivel bridge according to claim 8, characterized in that, Through holes are provided on the surface of the slide rail. Bolts are provided at the corresponding positions of the tray and the slide rail. The tray maintains its relative position with the slide rail through the cooperation of the bolts and the through holes.

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

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