Multi-point force-bearing type bridge swivel system capable of achieving real-time monitoring and self-adaptive adjustment

Abstract

The invention relates to a multi-point bearing type bridge swivel system capable of real-time monitoring and self-adaptive adjustment, which comprises a spherical hinge, a plurality of bearing rotating devices and a traction system, the spherical hinge is used as a main support, the plurality of bearing rotating devices are used as bearing fulcrums capable of active bearing and automatic adjustment and a walking system, and the bearing rotating devices are distributed on the periphery of the spherical hinge. The traction system is used for driving the bridge swivel; the force-bearing rotating device comprises a self-adaptive force-bearing fulcrum, a safety fulcrum and a walking slide way, the safety fulcrum is used for auxiliary supporting, the walking slide way provides a motion track for the self-adaptive force-bearing fulcrum and the safety fulcrum, and a force-measuring sensor, a walking roller and a hydraulic device are arranged in the self-adaptive force-bearing fulcrum; the walking rollers enable the self-adaptive force bearing fulcrums to annularly rotate along the annular walking slideways, and the hydraulic devices are used for adjusting the supporting force of the self-adaptive force bearing fulcrums. By means of the innovative design of the multiple force-bearing rotating devices, the bearing capacity and stability of the bridge rotating system are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the field of bridge engineering, and particularly relates to a multi-point bearing bridge rotation system capable of real-time monitoring and adaptive adjustment. Background Art

[0002] With the rapid development of economy and technology, the number of bridge engineering projects has increased rapidly, and the number of cross-river and cross-existing line bridges has been increasing. The engineering demand for rotation construction bridges to cross high-grade highways or railways is rising continuously. In particular, large-scale overpass bridges are increasingly developing into super-large and super-heavy bridges. With the increase in the scale and complexity of bridge structures, higher requirements are put forward for rotation construction technology. For example, the maximum rotation tonnage of the Huizhao Expressway over-railway overpass is 49,300 tons, and it has broken through the single cantilever length of 200m and the rotation beam length of 350m for the first time, both of which are the highest in the world. The rotation construction technology of these new bridge structures faces severe challenges. How to select a safe and reliable rotation structure system and design an efficient equipment system has become a key issue.

[0003] At present, large-tonnage rotation bridges at home and abroad mostly adopt a single-point bearing spherical hinge rotation system, which mainly relies on the central spherical hinge for support and the peripheral insurance supports for auxiliary support. However, the existing spherical hinge rotation system has obvious defects: (1) The main weight of the rotation bridge is borne by the spherical hinge, and the vertical reaction force provided by the insurance support is extremely small, resulting in over-concentrated stress on the lower bearing platform; (2) When using the rigid displacement mutation method for rotation construction, a gap is required between the support and the slideway, resulting in vertical rotation of the bridge during rotation, affecting the safety of high-rise structure bridges; (3) After the rotation is completed, the bridge attitude needs to be adjusted, increasing the construction period and cost. Some domestic projects optimize the rotation process by adopting a multi-point support system with gear-rack transmission. Although its anti-overturning stability is significantly improved, this system still has the problem of passive force, and has high precision requirements, difficult maintenance and high cost. Therefore, the traditional spherical hinge rotation system is difficult to meet the requirements of anti-overturning safety and attitude maintenance under conditions such as super-large tonnage, long cantilever, large span and complex construction environment. Summary of the Invention

[0004] To meet the technical requirements of asymmetric cross-rotation, curved bridges, and high-rise bridge structures, and to ensure anti-overturning stability and smooth rotation under unbalanced loads such as sudden strong winds and falling of bridge deck equipment, the invention provides a multi-point bearing bridge rotation system capable of real-time monitoring and adaptive adjustment, so as to improve the safety, stability and construction efficiency of rotation construction.

[0005] To achieve the above object, the technical solution of the invention is as follows:

[0006] A multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment comprises a ball joint, a load-bearing rotating device and a traction system, wherein the ball joint serves as the main support and is located at the center of the bridge rotation system, and a plurality of the load-bearing rotating devices serve as load-bearing fulcrums and running systems that can be actively loaded and automatically adjusted and are distributed around the ball joint, and the traction system is used to drive the bridge rotation; the load-bearing rotating device comprises an adaptive load-bearing fulcrum, a safety fulcrum and a running slideway, the safety fulcrum is used for auxiliary support, the running slideway provides a motion track for the adaptive load-bearing fulcrum and the safety fulcrum, a force sensor, a running roller and a hydraulic device are arranged inside the adaptive load-bearing fulcrum, the force sensor is used to monitor the stress state of the adaptive load-bearing fulcrum in real time, the running roller enables the adaptive load-bearing fulcrum to rotate in a circle along the circular running slideway, and the hydraulic device is used to adjust the supporting force of the adaptive load-bearing fulcrum.

[0007] Preferably, the load-bearing rotating device further comprises a rubber pad and a pad, the hydraulic device is mounted on the pad, the rubber pad is mounted between the top of the walking roller and the pad, and the load of the walking roller is evenly distributed through the deformation of the rubber pad itself.

[0008] Preferably, the load-bearing rotating device further comprises a lower supporting leg and an upper supporting leg, the force sensor is arranged at the bottom of the lower supporting leg, and the upper supporting leg is fixedly arranged on the upper turntable.

[0009] Preferably, a gap t1 is provided between the upper supporting leg and the lower supporting leg, and the gap t1 is larger than the gap t2 between the safety fulcrum and the running slideway, so that the safety fulcrum and the adaptive load-bearing fulcrum are not subjected to force at the same time when the bridge is lowered.

[0010] Preferably, the travel roller is a conical structure.

[0011] Preferably, the hydraulic device is configured to automatically release pressure when the force on the adaptive load-bearing fulcrum exceeds the design value, and automatically increase pressure when the force is lower than the design value, so as to keep the force on the adaptive load-bearing fulcrum within the design range.

[0012] Preferably, during rotation, the hydraulic device is only subjected to vertical pressure and can only move up and down.

[0013] Preferably, the hydraulic device includes a plurality of jacks, and the jacks are lifted during rotation to make the lower support leg move upward and be fixed with the upper support leg.

[0014] Preferably, the force sensor is ultra-thin and has the functions of real-time pressure display and over-limit warning.

[0015] Preferably, 3-4 adaptive load-bearing fulcrums and safety fulcrums are provided, and each adaptive load-bearing fulcrum provides a vertical bearing force of 1000-2000 tons and bears 10%-20% of the total rotating tonnage of the bridge.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] The multi-point load-bearing bridge rotating system capable of real-time monitoring and adaptive adjustment described in the present invention significantly improves the bearing capacity and stability of the rotating system by introducing a load-bearing rotating device including an adaptive load-bearing fulcrum, a safety fulcrum, and a running slideway. Each adaptive load-bearing fulcrum provides a vertical bearing force of 1000 to 2000 tons and bears 10-20% of the total rotating tonnage of the bridge, and is evenly arranged on the slideway of the traditional central spherical hinge rotating system, thus greatly improving the stress of the upper and lower turntables of the rotation, and being able to meet the requirements of complex bridge structures such as super-large tonnage, long cantilever, large span, and asymmetric span rotation. In addition, the adaptive load-bearing fulcrum can achieve real-time monitoring and automatic adjustment, accurately adjust the attitude of the bridge body before rotation, and intelligently and automatically adjust during the rotation process to ensure the stability of the bridge attitude, be able to cope with unbalanced loads and emergencies, and ensure the safe rotation of the bridge. The adaptive load-bearing fulcrum rotates annularly along the running slideway and adopts a rolling friction method, reducing the frictional resistance and ensuring the smooth and stable rotation process. The setting of the safety fulcrum plays an auxiliary safety role and is adjusted according to the rotating tonnage, the size of the spherical hinge, the construction convenience, and the rotating force requirements, further improving the stability and safety of the system. Description of the Drawings

[0018] Figure 1 It is a three-dimensional schematic diagram of the multi-point load-bearing rotating system of this embodiment;

[0019] Figure 2 It is a three-dimensional schematic diagram of the load-bearing rotating device of the multi-point load-bearing rotating system of this embodiment;

[0020] Figure 3 It is a schematic structural diagram of the adaptive load-bearing fulcrum of the load-bearing rotating device of this embodiment.

[0021] Description of the reference numerals: 1-spherical hinge, 2-load-bearing rotating device, 3-traction system, 2-1-adaptive load-bearing fulcrum, 2-2-safety fulcrum, 2-3-running slideway, 2-1-1-force measuring sensor, 2-1-2-walking roller, 2-1-3-hydraulic device. Detailed Embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the present invention.

[0023] In addition, the described features, structures or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to give a full understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid obscuring aspects of the present application.

[0024] As Figure 1 shown, this embodiment discloses a multi-point bearing type bridge rotation system that can be monitored in real time and adjusted adaptively, including a spherical hinge 1, a bearing rotation device 2, and a traction system 3. The spherical hinge 1 serves as the main support and is located at the center of the bridge rotation system. A plurality of bearing rotation devices 2 serve as load-bearing supports and running systems that can actively bear loads and automatically adjust, and are distributed around the spherical hinge 1. The traction system 3 is used to drive the rotation of the bridge. In this embodiment, the spherical hinge 1 provides the main support at the center, the bearing rotation devices 2 arranged around realize active load bearing and automatic adjustment, and the traction system 3 is responsible for driving the entire rotation process, thereby ensuring the coordinated operation of the overall structure. The bearing rotation device 2 includes an adaptive load-bearing support 2-1, a safety support 2-2, and a running slideway 2-3. Among them, the safety support 2-2 is used for auxiliary support, and the running slideway 2-3 provides a movement track for the adaptive load-bearing support 2-1 and the safety support 2-2. The adaptive load-bearing support 2-1 is the main load-bearing unit, the safety support 2-2 serves as a safety supplement, and the running slideway 2-3 ensures the stable trajectory of the support during movement. Inside the adaptive load-bearing support 2-1, a force sensor 2-1-1, a walking roller 2-1-2, and a hydraulic device 2-1-3 are provided. The force sensor 2-1-1 is used to monitor the stress state of the adaptive load-bearing support 2-1 in real time. The walking roller 2-1-2 enables the adaptive load-bearing support 2-1 to rotate in a circular motion along the circular running slideway 2-3. The hydraulic device 2-1-3 is used to adjust the bearing force of the adaptive load-bearing support 2-1. By feeding back the stress situation in real time through the force sensor 2-1-1, the walking roller 2-1-2 ensures the smooth rotation of the adaptive load-bearing support 2-1 on the slideway 2-3, and the hydraulic device 2-1-3 automatically adjusts the bearing capacity according to the real-time data, thereby realizing precise control and safety guarantee during the bridge rotation process.

[0025] Furthermore, the load-bearing rotating device 2 further includes a rubber pad and a backing plate. The hydraulic device 2-1-3 is installed on the backing plate. The rubber pad is installed between the top of the traveling roller 2-1-2 and the backing plate, and the load of the traveling roller 2-1-2 is evenly distributed through the deformation of the rubber pad itself. The rubber pad can effectively buffer the force change of the traveling roller 2-1-2 on the traveling slideway 2-3, avoid local stress concentration, ensure the balanced force of each roller, and improve the overall stability. The load-bearing rotating device 2 further includes a lower support leg and an upper support leg. The force-measuring sensor 2-1-1 is arranged at the bottom of the lower support leg. The upper support leg is fixedly arranged on the upper turntable. The configuration of the lower support leg and the upper support leg can enhance the stability of the overall structure, enable the force-measuring sensor 2-1-1 to accurately capture the load change generated during the rotation process, and at the same time, the upper support leg on the upper turntable provides a reliable support and stable force transmission for the entire rotation system. There is a gap t1 between the upper support leg and the lower support leg, and the gap t1 is greater than the gap t2 between the insurance fulcrum 2-2 of the bridge rotation system and the traveling slideway 2-3, so that the insurance fulcrum 2-2 and the adaptive load-bearing fulcrum 2-1 do not bear force simultaneously when the bridge is jacked down, and their functions do not overlap, improving the safety and controllability of the construction.

[0026] Furthermore, the roller of the traveling roller 2-1-2 is of a conical structure. The roller of the conical structure is adapted to the annular slideway of the traveling slideway 2-3. The design of the conical roller enables the traveling roller 2-1-2 to roll stably along the annular slideway, provides better directivity in the radial direction, reduces rolling friction, improves the running smoothness of the traveling roller 2-1-2, and thus ensures the accurate alignment of the bridge during the rotation process, enhancing the safety and reliability of the construction.

[0027] In this embodiment, the hydraulic device 2-1-3 is configured to automatically release pressure when the force on the adaptive load-bearing fulcrum 2-1 exceeds the design value, and automatically increase pressure when the force is lower than the design value, so as to keep the force on the adaptive load-bearing fulcrum 2-1 within the design range. The hydraulic device 2-1-3 monitors the stress state of the adaptive load-bearing fulcrum 2-1 in real time and dynamically adjusts the internal pressure to ensure that the adaptive load-bearing fulcrum 2-1 can provide stable supporting force under various construction conditions, avoiding structural damage due to excessive force, or affecting the stability of the bridge rotation due to insufficient force. During the rotation, the hydraulic device 2-1-3 only bears pressure in the vertical direction and can only move up and down. The vertical force characteristics of the hydraulic device 2-1-3 ensure that the hydraulic device 2-1-3 will not generate lateral force during the jacking or falling process, thereby avoiding the adaptive load-bearing fulcrum 2-1 from tilting or offsetting during the force process, thereby improving the stability and safety of the system. The hydraulic device 2-1-3 includes multiple jacks. When rotating, the jacks are lifted to make the lower support leg move upward. Since the upper support leg is fixed on the upper turntable, the jacks of the hydraulic device 2-1-3 are lifted to make the lower support leg move upward and consolidate with the upper support leg. The hydraulic device 2-1-3 provides precise lifting force during the lifting process, so that the lower support leg gradually rises and finally makes firm contact with the upper support leg, thereby achieving precise positioning during the rotation of the bridge, reducing the need to adjust the bridge posture after rotation, and improving construction efficiency.

[0028] Furthermore, the force sensor 2-1-1 is ultra-thin and has real-time pressure display and over-limit warning functions. The real-time pressure display function of the force sensor 2-1-1 can dynamically feedback the force condition of the adaptive load-bearing support 2-1, so that the construction personnel can grasp the changes in the supporting force at any time during the rotation process, ensuring the safety of the rotation construction. The over-limit warning function enables the force sensor 2-1-1 to immediately send out an alarm signal when it detects that the force exceeds the design upper limit or is lower than the design lower limit, prompting the construction personnel to make adjustments or the system automatically adjusts the pressure of the hydraulic device 2-1-3, thereby ensuring the stability and safety of the bridge rotation construction.

[0029] In this embodiment, according to the force-bearing and construction requirements, the number of self-adaptive load-bearing supports 2-1 and safety supports 2-2 can be set to 3-4 according to the rotation tonnage, the size of the spherical hinge 1, the construction convenience, and the requirements of rotation force-bearing and stability. They are evenly arranged at intervals along the running slideway 2-3 of the bridge horizontal rotation system. The even arrangement makes the force-bearing of the entire rotation system more balanced, avoiding the problem of uneven bearing caused by single-point force-bearing in the traditional spherical hinge system, and improving the stability and safety of the bridge during the rotation process. Each self-adaptive load-bearing support 2-1 provides a vertical supporting force of 1000-2000 tons and bears 10%-20% of the total rotation tonnage of the bridge. The main force during the bridge rotation process is jointly borne by multiple load-bearing devices 3, greatly reducing the load on the central spherical hinge 1, thereby reducing the problem of concentrated force-bearing on the lower bearing platform, improving the load-bearing capacity of the entire system, and making the bridge rotation construction applicable to complex working conditions such as super-large tonnage, long cantilever, and large span, enhancing the safety and controllability of the construction.

[0030] In summary, the present invention discloses a multi-point load-bearing bridge rotation system that can be monitored in real time and adjusted adaptively. The key innovative structure of this system is the load-bearing rotation device 2 evenly arranged around the spherical hinge 1 in the center, which consists of three parts: the self-adaptive load-bearing support 2-1, the safety support 2-2, and the running slideway 2-3. The self-adaptive load-bearing support 2-1 includes a hydraulic device 2-1-3 and a force-measuring sensor 2-1-1. The hydraulic device 2-1-3 realizes the active adjustment of the supporting force of the load-bearing device by synchronously jacking up or falling back through multiple groups of jacks. The force-measuring sensor 2-1-1 can monitor and display the supporting force in real time and has an over-limit warning function; the safety support 2-2 plays an auxiliary safety insurance role, improving the safety and reliability of the overall structure; the bottom of the self-adaptive load-bearing support 2-1 on the running slideway 2-3 adopts a walking roller 2-1-2 with a conical structure and runs radially along the circular track, reducing the running resistance by using rolling friction and improving the smoothness and safety of the rotation system. The self-adaptive load-bearing support 2-1 has technical characteristics such as active load-bearing, adaptive regulation, real-time monitoring, and precise running, realizing fine adjustment of the beam body attitude before bridge rotation, ensuring intelligent automatic adjustment of the bridge attitude during the rotation process to cope with unbalanced loads and emergencies, and improving the safety of bridge rotation. A single self-adaptive load-bearing support 2-1 can provide a vertical supporting force of 1000 to 2000 tons and bear 10-20% of the total rotation tonnage of the bridge, effectively improving the force-bearing conditions of the upper and lower turntables during rotation and enhancing the load-bearing capacity of the entire rotation system.

[0031] The technical solution of the present invention breaks through the limitations of the traditional central spherical hinge 1 slewing system, realizes the construction requirements of slewing bridges with ultra-large tonnage (50,000 - 80,000 tons), long cantilever (150 - 300 m), large span (250 - 400 m), significant plane curve, asymmetric span slewing, wide bridge deck, high-rise structure, etc., and overcomes the problems of single force mode, complex construction regulation, insufficient anti-overturning ability, etc. under the demand of large tonnage in the traditional central spherical hinge 1 slewing system. Compared with the traditional central spherical hinge 1 slewing system, this system only increases the investment by about 30%, but can significantly enhance the anti-overturning safety and attitude maintaining ability of asymmetric span slewing, curved bridges, high-rise bridge structures and construction unbalanced loads (such as sudden strong winds, falling of bridge deck equipment, etc.). The present invention provides a multi-point bearing type bridge slewing system with both real-time monitoring and adaptive adjustment functions, which not only significantly improves the bearing capacity of the slewing system, but also realizes the intelligent and precise adjustment of the bridge attitude through the real-time monitoring and active adjustment of the supporting force, so as to ensure the safety and controllability of the bridge slewing process, has outstanding technical and economic advantages, and has broad engineering application prospects.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, and they are not provided in detail for the sake of simplicity; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment, characterized in that: The invention comprises a ball joint (1), a load-bearing rotating device (2) and a traction system (3), wherein the ball joint (1) is used as a main support and is located at the center of the bridge rotation system, and a plurality of the load-bearing rotating devices (2) are used as load-bearing fulcrums and running systems that can actively bear loads and automatically adjust, and are distributed around the ball joint (1), and the traction system (3) is used to drive the bridge rotation; the load-bearing rotating device (2) comprises an adaptive load-bearing fulcrum (2-1), a safety fulcrum (2-2) and a running slideway (2-3), wherein the safety fulcrum (2-2) is used for auxiliary support, and the running slideway (2-3) is used for the adaptive load-bearing The force fulcrum (2-1) and the safety fulcrum (2-2) provide a motion track. A force sensor (2-1-1), a walking roller (2-1-2) and a hydraulic device (2-1-3) are arranged inside the adaptive load-bearing fulcrum (2-1). The force sensor (2-1-1) is used to monitor the force state of the adaptive load-bearing fulcrum (2-1) in real time. The walking roller (2-1-2) enables the adaptive load-bearing fulcrum (2-1) to rotate in an annular shape along the circular running slideway (2-3). The hydraulic device (2-1-3) is used to adjust the supporting force of the adaptive load-bearing fulcrum (2-1).

2. The multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment according to claim 1 is characterized in that: The load-bearing rotating device (2) also includes a rubber pad and a pad, the hydraulic device (2-1-3) is installed on the pad, and the rubber pad is installed between the top of the walking roller (2-1-2) and the pad, so that the load of the walking roller (2-1-2) is evenly distributed through the deformation of the rubber pad itself.

3. The multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment according to claim 2 is characterized in that: The load-bearing rotating device (2) further comprises a lower support leg and an upper support leg, the force sensor (2-1-1) is arranged at the bottom of the lower support leg, and the upper support leg is fixedly arranged on the upper turntable.

4. The multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment according to claim 3 is characterized in that: A gap t1 is provided between the upper support leg and the lower support leg, and the gap t1 is larger than a gap t2 between the safety support point (2-2) and the running slideway (2-3), so that when the bridge is lowered, the safety support point (2-2) and the adaptive load-bearing support point (2-1) are not subjected to force at the same time.

5. The multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment according to claim 4 is characterized in that: The walking roller (2-1-2) is a conical structure.

6. The multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment according to claim 5 is characterized in that: The hydraulic device (2-1-3) is configured to automatically release pressure when the force applied to the adaptive load-bearing fulcrum (2-1) exceeds a design value, and to automatically increase pressure when the force applied is lower than a design value, so as to keep the force applied to the adaptive load-bearing fulcrum (2-1) within a design range.

7. The multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment according to claim 6 is characterized in that: During rotation, the hydraulic device (2-1-3) only bears pressure in the vertical direction and can only move up and down.

8. The multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment according to claim 7 is characterized in that: The hydraulic device (2-1-3) comprises a plurality of jacks, and when rotating, the jacks are lifted to make the lower support leg move upward and be fixed with the upper support leg.

9. The multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment according to claim 1 is characterized in that: The force sensor (2-1-1) is ultra-thin and has the functions of real-time pressure display and over-limit warning.

10. The multi-point load-bearing bridge rotation system capable of real-time monitoring and adaptive adjustment according to claim 1 is characterized in that: The adaptive load-bearing fulcrum (2-1) and the safety fulcrum (2-2) are both arranged in 3-4 numbers, and each adaptive load-bearing fulcrum (2-1) provides 1000-2000 tons of vertical supporting force, bearing 10%-20% of the total rotating tonnage of the bridge.

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