Intelligent repeatable swivel system and method for super-tonnage bridge

Abstract

This invention relates to an intelligent, reusable rotation system and method for ultra-large tonnage bridges, belonging to the field of bridge rotation technology. This rotation system miniaturizes the central ball joint structure, significantly reducing its diameter and arc dimensions, simplifying manufacturing, and lowering structural height and cost. The miniaturized central ball joint structure also avoids the need for transporting oversized components, significantly reducing transportation costs. The intelligent auxiliary support, employing an electronic control system, can be hoisted into place during the installation of the central ball joint structure without manual handling. The intelligent auxiliary support can share the load on the central ball joint structure, perform pre-rotation balance weighing tests, and monitor the bridge's balance during rotation in real time, greatly improving testing efficiency. Once the bridge is in place, the intelligent auxiliary support can assist in lifting and is reusable, avoiding the difficulties in posture adjustment caused by insufficient installation space for the outer lifting equipment and significantly reducing equipment costs.

Description

Technical Field

[0001] This invention belongs to the field of bridge rotation technology, specifically relating to an intelligent, repeatable rotation system and method for ultra-large tonnage bridges. Background Technology

[0002] Rotation construction refers to a construction method where a bridge structure is built on a location other than the designed axis and then rotated to bring the bridge to the designed axis position. Many bridge projects need to be built along railway lines to meet people's daily needs. To ensure that the safety of train traffic on the railway line is not disturbed, rotation construction is used when building bridges near them. Rotation construction has advantages such as convenience, economy, and no traffic disruption. It can also mitigate some of the risks associated with construction in challenging terrains such as crossing canyons. In recent years, rotation construction has been widely used.

[0003] Starting in 1970, the rotation construction technology began to be promoted in China. The Suining Construction Bridge in Sichuan, completed in 1977, was the first bridge in my country to use this rotation construction technology, with a main span of 70 meters. In the late 1970s and early 1980s, arch bridges constructed using the horizontal rotation method in my country all had spans under 100 meters and all involved rotation with counterweights. To address the issue of the large weight required for rotating large-span arch bridges, Chinese bridge experts proposed a counterweight-free rotation construction method and successfully implemented it in 1987 on the Longmen Bridge in Wushan, Sichuan, with a span of 122 meters. In 1988, the Wujiang Bridge in Fuling, Sichuan, successfully used this method for rotation, enabling the span of arch bridges in my country to exceed 200 meters for the first time.

[0004] With my country's rapid economic development, investment in infrastructure construction has continued to increase. The Beipanjiang Bridge, a steel pipe arch bridge built in Liupanshui, Guizhou in 2001, weighed 10,400 tons. The Dongping Bridge in Foshan, Guangdong, completed in 2006, achieved significant results in rotation construction technology. The main arch rib adopted a construction method combining horizontal splicing and vertical lifting with horizontal rotation, a first in domestic bridge construction; the main bridge's rotation weight reached 14,800 tons, setting a world record for the heaviest steel arch bridge rotated at that time. In 2009, the Shijiazhuang Ring Road cable-stayed bridge across the Shijiazhuang-Taiyuan Railway used a horizontal rotation method, with a rotation weight of 16,500 tons. In June 2010, the tied arch bridge across the Shanghai-Hangzhou High-Speed ​​Railway used a horizontal rotation method, with a rotation weight of 16,800 tons. On January 14, 2014, the Gusushu overpass across the railway in Hankou, Wuhan, successfully closed its box girder across the Beijing-Guangzhou Railway and the Hefei-Wuhan Railway after a counter-clockwise rotation, with a rotation tonnage reaching 17,300 tons. The Danyang Road overpass in Heze, built in 2016, has a rotating structure weighing 24,800 tons. In July 2019, the Lekai Avenue South Extension cable-stayed bridge in Baoding, which crosses the Beijing-Guangzhou Railway, was constructed using a horizontal rotation method, with a rotating weight of 46,500 tons.

[0005] Thanks to the joint efforts of countless bridge builders and designers, the bridge rotation construction method has been further promoted and developed, and its application scope has rapidly expanded in terms of regions, bridge types, and rotation technologies. Currently, the total number of bridges constructed using the bridge rotation method in China ranks first in the world, and the technology and processes used in this method are also at a world-leading level. However, some key technologies still constrain the further development of bridge rotation construction. The rotation length and tonnage of bridges are increasing year by year. As the tonnage continues to increase, the processing, shaping, transportation, and installation of the rotating hinges face numerous difficulties. At the same time, the balancing, weighing, and attitude adjustment of ultra-large tonnage bridges also present technical challenges. Therefore, solving the key technical problems restricting the development of ultra-large tonnage bridge rotation is particularly urgent.

[0006] Please refer to the invention patents CN202010685911.8, entitled "A Construction Device and Method for Horizontal Rotation of Extremely Asymmetrical Beams Without Weighing or Counterweight", CN201610023468.1, entitled "Construction Method of Unbalanced Weight Monitoring Device for the Entire Construction Process of Hanging Basket on the Upper Part of T-Structure for Horizontal Rotation", and CN201810424717.7, entitled "Construction Method of Low-Clearance Rotation Bridge Across Operating Lines". Bridge rotation systems typically include a lower abutment, an upper abutment, and a rotation structure. The lower abutment is cast on the ground. The rotation structure includes structures such as ball joints, support legs, sand boxes, and traction hydraulic presses. The ball joint structure includes an upper ball joint and a lower ball joint. The upper ball joint is fixed to the upper abutment, and the lower ball joint is fixed to the lower abutment. The pier and bridge are cast above the upper abutment.

[0007] The diameter of the ball joint structure is determined by the estimated weight of the bridge; the greater the weight of the bridge, the larger the diameter of the ball joint. The ultra-large ball joint structure is difficult to form and process, requiring specialized CNC lathes, milling machines, and other large precision equipment for production, resulting in extremely high costs. For example, a ball joint with a load-bearing capacity of 400MN has a central ball joint diameter of approximately 5.8 meters. Furthermore, to ensure the precision of the ball joint structure, it is usually manufactured in a factory and then transported to the construction site. This process typically occupies highways, and the approximately 5.8-meter diameter ball joint structure is considered an oversized component, requiring coordination with road transport departments, removal of toll booths, and road closures, leading to high transportation costs. Most importantly, before the bridge rotation, a balance and weighing test must be conducted, and counterweights must be added based on the test results. After the bridge rotation, longitudinal and transverse attitude adjustments and repeated joint measurements must be performed to meet the closing accuracy requirements. Generally, the balance and weighing and attitude adjustment process requires lifting from both sides in one direction, or even lifting in both longitudinal and transverse directions. Taking a 400MN rotating bridge as an example, the jacking force required on one side is approximately 4000t. Assuming the use of a single 500t jack, 8 jacks are needed for jacking one side in one direction, 16 jacks are needed for both sides, and 32 jacks are needed for jacking in two directions. The weight of the hydraulic jacks is very large, around several hundred kilograms. Due to the limited space at the bottom of the turntable (generally 0.8 to 1m), operation is difficult, and cranes cannot be used for hoisting. The jacks can only be moved manually. During the process of balancing, weighing, and adjusting the posture, the hydraulic jacks need to be moved multiple times, which is time-consuming, labor-intensive, and inefficient. Furthermore, during the bridge rotation process, the corresponding highway or railway must be closed. The closure time is limited, and the conventional method of monitoring the rotation balance is manual, which is time-consuming and labor-intensive, taking a long time and affecting the progress of the bridge rotation. At the same time, during the rotation process, the bridge structure is in a single-point supported cantilever state, and the beam is subject to many external interference factors, making it the most unstable stage of the beam. To ensure the safety of the rotation, the bridge's rotation balance needs to be monitored in real time. Data needs to be collected manually and then analyzed and processed to assess the structural safety status. This process takes a certain amount of time, during which the bridge has actually rotated to another state, and cannot reflect the current rotation status in real time, making it impossible to detect problems in time. Moreover, since the railway rotation window is generally at night, the manual measurement environment is limited, resulting in large measurement errors and potential safety hazards. Summary of the Invention

[0008] Therefore, the purpose of this invention is to provide an intelligent, repeatable rotation system and method for ultra-large tonnage bridges. This system miniaturizes the central ball joint structure, significantly reducing its diameter and arc dimensions, simplifying manufacturing, lowering structural height and cost. The miniaturized central ball joint structure also avoids the need for transporting oversized components, resulting in significantly reduced transportation costs. Furthermore, the intelligent auxiliary support using an electronically controlled system can be hoisted into place during the installation of the central ball joint structure, eliminating the need for manual handling. The intelligent auxiliary support can share the load on the central ball joint structure, perform pre-rotation balance weighing tests, and monitor the bridge's balance in real time, allowing for continuous adjustments and improving efficiency. Once the bridge is in place, the intelligent auxiliary support can also assist in jacking, enabling the central ball joint structure to rotate vertically, avoiding the difficulties in posture adjustment caused by insufficient installation space for the outer jacking equipment.

[0009] The embodiments of the present invention are implemented as follows:

[0010] This invention provides an intelligent, repeatable rotation system for ultra-large tonnage bridges, including a split ball joint, which comprises a central ball joint structure that shares the load and an intelligent auxiliary support using an electronic control system.

[0011] The central ball joint structure includes a lower ball joint, a pin, and an upper ball joint, with the lower ball joint and the upper ball joint being rotatably engaged by the pin.

[0012] The intelligent auxiliary support includes an auxiliary slide rail and several hydraulic supports, which are evenly distributed around the central ball joint structure. The auxiliary slide rail is annular and coaxially arranged with the pin shaft. The auxiliary slide rail is located on the upper bearing platform and the hydraulic supports are detachably located on the lower bearing platform, or the auxiliary slide rail is located on the lower bearing platform and the hydraulic supports are detachably located on the upper bearing platform. The hydraulic supports can be raised and lowered so that the auxiliary slide rail and the hydraulic supports can slide in contact. The intelligent auxiliary support is configured to share the force of the central ball joint structure, monitor the balance of the bridge in real time, and assist in jacking after the bridge is rotated into place.

[0013] This invention also provides an intelligent, repeatable rotation method for ultra-large tonnage bridges, using the aforementioned rotation system, including:

[0014] S1, release the bridge rotation constraint; step S1 includes: S11, adjust the height of the hydraulic support to be consistent with the height of the central ball joint structure; S12, adjust the force on the intelligent auxiliary support to the preset proportion of the design load; S12, symmetrically release the temporary pier and temporary sand box, so that the bridge gravity is gradually transferred to the split ball joint.

[0015] S2, balance adjustment of the bridge; step S2 includes: S21, real-time monitoring of the force at each support point through hydraulic bearings; S22, loading counterweights to balance the force at each support point of the bridge; S23, adjusting the force on the split ball joint to the design condition, wherein the intelligent auxiliary bearing bears a first preset weight threshold and the central ball joint structure bears a second preset weight threshold.

[0016] S3, rotate the bridge to the preset position; step S3 includes: S31, pull the bridge to rotate at a preset angle using traction equipment and observe the bridge's rotation parameters; S32, continue rotating the bridge, monitor the bridge's balance in real time using hydraulic supports, and adjust in real time according to the monitoring results until the bridge is rotated into position.

[0017] S4, After the bridge is rotated into place, its attitude is adjusted; Step S4 includes: Step S41, measuring and determining the longitudinal bridge attitude adjustment direction; Step S42, unloading the support force in the corresponding direction in stages, with the jacking system loading synchronously in the opposite direction to ensure that the sum of the jacking forces on the corresponding axis is not lower than the design value, until the central ball joint structure rotates vertically; Step S43, collecting support force and structural attitude data; Step S44, repeating steps S41 to S43 until precise closure; Step S45, adjusting the transverse bridge attitude in the same way.

[0018] S5, pouring and sealing; step S5 includes: S51, removing the hydraulic support; S52, pouring concrete at the connection between the upper and lower bearing platforms.

[0019] The beneficial effects of this invention are:

[0020] The intelligent, reusable rotation system and method for ultra-large tonnage bridges provided by this invention miniaturizes the central ball joint structure, significantly reducing its diameter and arc dimensions, simplifying manufacturing, and lowering structural height and cost. The miniaturized central ball joint structure also eliminates the need for transporting oversized components, drastically reducing transportation costs. Furthermore, the intelligent auxiliary support, employing an electronically controlled system, can be hoisted into place during the installation of the central ball joint structure, eliminating the need for manual handling. This intelligent auxiliary support can share the load on the central ball joint structure and perform intelligent balance and weighing tests before rotation, avoiding the difficulties in arranging and lifting equipment for longitudinal and transverse balance and weighing of ultra-large tonnage bridges under limited space on the upper and lower turntables. It also allows for real-time monitoring of the bridge's balance during rotation, enabling staff to make adjustments and significantly improving testing efficiency. Once the bridge is in place, the intelligent auxiliary support can assist in lifting, causing the central ball joint structure to rotate vertically. This avoids the difficulties in balance and weighing and attitude adjustment caused by insufficient installation space for the outer lifting equipment. Moreover, the intelligent auxiliary support can be disassembled and recycled after the rotation is completed, significantly reducing the cost of the rotation process equipment. The advantages of this invention are: it solves the technical problems of difficult hinge processing, transportation and rotation weighing in the process of developing swing bridges towards ultra-large tonnage. The swing system has a simple structure and can be recycled, thereby reducing the equipment and construction costs of the swing process.

[0021] Taking a 400MN rotating bridge as an example, this invention miniaturizes the central ball joint to approximately 3.8 meters in diameter, solving the problem of difficult processing and forming of ultra-large ball joint structures. After miniaturizing the central ball joint, the overall material and processing cost of the rotating joint system can be reduced by approximately 25%. Miniaturizing the central ball joint avoids the problem of transporting ultra-large components, and the overall transportation cost is reduced by approximately 60% compared to conventional large component solutions. In addition, the intelligent auxiliary support can significantly improve the efficiency of balance weighing and attitude adjustment, and significantly reduce the cost of measures, which can be reduced by approximately 65% ​​compared to conventional methods. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The above and other objects, features, and advantages of the present invention will become clearer through the drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the main points of the invention.

[0023] Figure 1 A schematic diagram of the rotating system provided in the first embodiment of the present invention. Figure 1 ;

[0024] Figure 2This is an elevation view of the rotating system provided in the first embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the rotating system provided in the first embodiment of the present invention. Figure 2 (Without upper support platform);

[0026] Figure 4 This is a schematic diagram of the split ball joint provided in the first embodiment of the present invention;

[0027] Figure 5 for Figure 4 Cross-section Figure 1 ;

[0028] Figure 6 for Figure 4 A diagram of the hydraulic and electrical control system of the rotating system provided in the first embodiment of the present invention;

[0029] Figure 7 for Figure 5 A magnified view of part A;

[0030] Figure 8 This is a partial structural schematic diagram provided for the second embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram illustrating the cooperation relationship between the transfer component and the hydraulic support provided in the second embodiment of the present invention. Figure 1 (Top view);

[0032] Figure 10 This is a schematic diagram illustrating the cooperation relationship between the transfer component and the hydraulic support provided in the second embodiment of the present invention. Figure 2 (Side view);

[0033] Figure 11 This is a schematic diagram of the structure of the hydraulic support provided in the second embodiment of the present invention;

[0034] Figure 12 A partial structural cross-section of the hydraulic support provided in the second embodiment of the present invention. Figure 1 ;

[0035] Figure 13 A partial structural cross-section of the hydraulic support provided in the second embodiment of the present invention. Figure 2 .

[0036] icon:

[0037] 10-Rotation system; 100-Split ball joint;

[0038] 11-Central ball joint structure; 110-Lower ball joint; 111-Pin; 112-Upper ball joint;

[0039] 12-Intelligent auxiliary support; 120-Auxiliary slide; 121-Hydraulic support; 122-Seat body; 123-Lifting component; 124-Hollow rubber plate; 125-Mounting ear; 126-Adjusting slide; 127-Locking gear ring;

[0040] 130-Fixed component; 131-Moving component; 132-First spherical surface; 133-Second spherical surface; 134-Support base; 135-Slide block; 136-Locking component; 137-Rotating part; 138-Locking head;

[0041] 140-Transfer assembly; 141-Steel frame; 143-Manual jack; 144-Lifting assembly; 145-First traveling frame; 146-Second traveling frame; 147-Fixing part; 148-Universal shaft; 149-Universal wheel; 150-Roller; 151-Swing arm; 152-Drive shaft; 153-First rotating arm; 154-Second rotating arm; 155-Drive arm; 156-Connecting rod; 157-Grab handle; 158-Reset spring;

[0042] 17-Supporting component; 170-Support frame; 171-Upper concrete cylinder;

[0043] 200-Lower bearing platform; 201-Upper bearing platform; 202-Annular slide rail; 203-Support leg; 204-Temporary sand box; 205-Traction reaction seat; 206-Traction hydraulic press; 207-Traction cable. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0048] First Embodiment

[0049] Please refer to Figure 1 As shown, the first embodiment of the present invention provides an intelligent reusable rotation system 10 for ultra-large tonnage bridges, which is used for rotation operations of ultra-large tonnage bridges.

[0050] First, let me explain the concept of super-large tonnage bridges. In bridge construction, super-large tonnage generally refers to around 30,000 tons or more. In this embodiment, the bridge weighs 40,000 tons. Of course, in other embodiments, the rotating system 10 can also be applied to bridges weighing more than 40,000 tons, such as 50,000 tons or 60,000 tons.

[0051] Construction environments requiring bridge rotation: When building highways, railways, or bridges, it is necessary to cross sections of existing operational roads, railways, rivers, or facilities. In such cases, directly constructing the bridge over these structures poses significant safety hazards, such as falling objects. Therefore, in these environments, it is necessary to first construct the bridge parallel to the existing route, and then rotate it to the designated location for closure. This process only requires a short road closure, such as two hours, minimizing safety risks.

[0052] A bridge typically includes pile foundations, a lower pile cap 200, an upper pile cap 201, piers, and the main bridge structure. The pile foundations generally consist of several vertical piles extending deep into the ground. The lower pile cap 200 is located at the top of the pile foundations, and the rotation system 10 is located between the lower pile cap 200 and the upper pile cap 201. The piers are located above the upper pile cap 201, and the main bridge structure is located above the piers and extends symmetrically to both ends. During bridge construction, the main bridge structure is parallel or substantially parallel to roads, etc. After the bridge is rotated, the main bridge structure intersects with roads and other non-parallel surfaces.

[0053] Currently, the processing, transportation, and balancing of ultra-large tonnage ball joints and rotating structures have become key technical issues restricting the development of ultra-large tonnage rotating bridges.

[0054] In this embodiment, the specific structure of the rotating system 10 is as follows: the rotating system 10 includes a split ball joint 100, a support structure, a traction structure, an auxiliary structure, etc.

[0055] The split-type ball joint 100 includes a receiving component 17, a central ball joint structure 11, and an intelligent auxiliary support 12. Both the central ball joint structure 11 and the intelligent auxiliary support 12 are mounted on the receiving component 17. The intelligent auxiliary support 12 is located around the central ball joint structure 11, and the two share the load. The central ball joint structure 11 is the primary load-bearing component, and the intelligent auxiliary support 12 is the secondary load-bearing component. For example, in this embodiment, the central ball joint structure 11 bears 2.8 tons of weight, and the intelligent auxiliary support 12 bears 1.2 tons of weight. Of course, in other embodiments, the load-bearing ratio of the central ball joint structure 11 and the intelligent auxiliary support 12 can be adjusted as needed, or the central ball joint structure 11 can be the secondary load-bearing component, and the intelligent auxiliary support 12 can be the primary load-bearing component.

[0056] The following is a detailed explanation of each structure.

[0057] The supporting component 17 mainly consists of a steel frame 141 and an upper concrete cylinder 171. The steel frame 141 can be a stainless steel frame structure, and it is embedded in the lower foundation 200. The upper concrete cylinder 171 is embedded in the upper foundation 201. The style of the steel frame 141 is not limited and can refer to existing technology. The steel frame 141 is equipped with fine-threaded bolts for adjusting the elevation.

[0058] The structure of the central ball joint structure 11 can refer to the existing technology. The central ball joint structure 11 mainly consists of a lower ball joint 110, a pin 111 and an upper ball joint 112. The lower ball joint 110 and the upper ball joint 112 are rotatably engaged by the pin 111.

[0059] Since the central ball joint structure 11 only bears a portion of the load on the bridge, its maximum load is reduced, and its diameter can be appropriately reduced. For example, in this embodiment, the diameter of the central ball joint structure 11 is approximately 3.8 meters. This miniaturization of the central ball joint facilitates manufacturing and transportation.

[0060] The central ball joint structure 11, which is about 3.8 meters long, is a large transport component, but not an oversized transport component. During transportation, the requirements for roads are relatively low, and there are more choices of transport vehicles. Compared with oversized transport components of about 5.8 meters, it can significantly reduce transportation costs. According to the inventor's practice, transportation costs can be reduced by 60%, saving hundreds of thousands of yuan.

[0061] Furthermore, the equipment used to produce ultra-large ball joint structures differs from that used to produce medium-to-large ball joint structures. Equipment for producing ultra-large ball joint structures typically costs tens of millions of dollars and can only be manufactured in certain specific factories, while equipment for producing medium-to-large ball joint structures only costs a few million dollars and can be manufactured in most factories that process ball joint structures.

[0062] The ultra-large ball joint structure is difficult to form and process. The diameter of the central ball joint structure 11 has been reduced from 5.8m to 3.8m, and the arc size has been greatly reduced, which significantly reduces the difficulty of processing and forming, and reduces the structural height and cost.

[0063] The lower ball joint 110 is supported on the steel frame 141. The top surface of the lower ball joint 110 is concave downwards and spherical. A polytetrafluoroethylene sliding plate and grease are placed on the spherical surface of the lower ball joint 110.

[0064] The height of the lower ball joint 110 needs to be finely adjusted. The adjustment method can refer to the existing technology and be adjusted using fine-threaded bolts on the steel frame 141. After adjustment, the height difference between any two points at the top of the lower ball joint 110 is less than or equal to 0.5mm. Of course, in other embodiments, the height difference between any two points at the top of the lower ball joint 110 is less than or equal to 0.5mm.

[0065] The lower ball joint 110 has a vertical through hole in the middle, and the pin 111 is inserted into the vertical through hole. The pin 111 can be directly inserted into the vertical through hole, and a steel sleeve can also be placed between the pin 111 and the vertical through hole.

[0066] The lower ball joint 110 can be constructed using a steel shell method combined with C150 steel fiber ultra-high performance concrete, which can significantly reduce costs by approximately 25%. Factory fabrication ensures the spherical accuracy of the structure, avoiding structural deformation caused by on-site casting.

[0067] The upper ball joint 112 can also adopt a steel shell method + C150 steel fiber ultra-high performance concrete composite structure. The upper ball joint 112 also has a vertical through hole in the middle, which is inserted and matched with the pin 111.

[0068] The bottom surface of the upper ball joint 112 protrudes downward in a spherical shape. The upper ball joint 112 and the lower ball joint 110 are matched. A polytetrafluoroethylene sliding plate can be placed between them, and butter or grease can be applied to allow the upper ball joint 112 and the lower ball joint 110 to rotate relative to each other.

[0069] The upper concrete cylinder 171 is located above the upper ball joint 112, and the upper concrete cylinder 171 and the upper ball joint 112 can be connected by bolts.

[0070] The diameter of the upper ball joint 112 in the horizontal direction is equal to or substantially equal to the diameter of the lower ball joint 110 in the horizontal direction. The diameter of the steel frame 141 and the diameter of the upper concrete cylinder 171 can be larger than the diameters of the upper ball joint 112 and the lower ball joint 110 in the horizontal direction. In this embodiment, the diameter of the steel frame 141 is equal to or substantially equal to the diameter of the upper concrete cylinder, and the axes of the steel frame 141, the lower ball joint 110, the pin 111, the upper ball joint 112, and the upper concrete cylinder 171 coincide.

[0071] The central ball joint structure 11 is surrounded by intelligent auxiliary supports. The intelligent auxiliary supports 12 include auxiliary slides 120 and several hydraulic supports 121.

[0072] The auxiliary slide 120 is annular, and its centerline coincides with the centerline of the pin 111. The auxiliary slide 120 can be a single structure or an assembled structure. In this embodiment, the auxiliary slide 120 is formed by splicing multiple auxiliary slide plates. Each auxiliary slide plate is fan-shaped, and the auxiliary slide plate can be connected to the steel frame 141 with bolts for easy assembly and disassembly.

[0073] The number of hydraulic supports 121 is not limited. In this embodiment, the intelligent auxiliary support 12 includes twelve hydraulic supports 121. The twelve hydraulic supports 121 are evenly distributed around the central ball joint structure 11. The hydraulic supports 121 are adjacent to the central ball joint structure 11, and the distance between them is small.

[0074] The hydraulic support 121 and the auxiliary slide rail 120 are slidably fitted together. They are respectively mounted on the steel frame 141 and the upper concrete cylinder 171. For example, the auxiliary slide rail 120 is mounted on the upper concrete cylinder 171 and the hydraulic support 121 is mounted on the steel frame 141, or the auxiliary slide rail 120 is mounted on the steel frame 141 and the hydraulic support 121 is mounted on the upper concrete cylinder 171. It should be noted that since the steel frame 141 is embedded within the lower bearing platform 200, the hydraulic support 121 being mounted on the steel frame 141 can also be considered as being mounted on the lower bearing platform 200. The same applies to other structures.

[0075] In this embodiment, the hydraulic support 121 is detachably connected to the steel frame 141. The connection method can be, but is not limited to, the following: mounting ears 125 are provided around the bottom of the hydraulic support 121, and the mounting ears 125 are fixed to the lower support 200 by bolts.

[0076] The hydraulic support 121 is capable of being raised and lowered so that the auxiliary slide rail 120 can slide in contact with the hydraulic support 121. The structure of the hydraulic support 121 can adopt, but is not limited to, the following:

[0077] The hydraulic support 121 includes a base 122, a lifting component 123, and a hollow rubber plate 124.

[0078] The seat 122 can be a cylindrical structure or other styles. The seat 122 is detachably mounted on the steel frame 141. The seat 122 is provided with an adjustment cavity with an opening at the top of the adjustment cavity. The adjustment space is a cylindrical cavity.

[0079] The lifting member 123 can be a cylindrical structure or other structures. The lifting member 123 is vertically and vertically disposed in the adjustment cavity, and the top end of the lifting member 123 extends out of the adjustment cavity.

[0080] A hollow rubber plate 124 is disposed in the adjustment cavity. Liquid can be injected into the hollow rubber plate 124 to expand it for lifting the lifting component 123.

[0081] When the lifting component 123 is lifted to a certain height, the top of the lifting component 123 slides into the auxiliary slide 120, and a polytetrafluoroethylene sliding plate, grease or silicone grease, etc. can be installed between them.

[0082] When the upper ball joint 112 and the upper concrete cylinder 171 rotate together, they can drive the auxiliary slide rail 120 to rotate around the pin 111. During this process, the lifting member 123 and the auxiliary slide rail 120 slide together, which can provide a certain support for the upper bearing platform 201.

[0083] The hydraulic bearing 121 and the central ball joint structure 11 jointly support the upper bearing platform 201, pier, bridge, etc., which allows the diameter of the central ball joint structure 11 to be relatively small. The hydraulic bearing 121 can be hoisted before the upper ball joint 112 or the upper concrete cylinder 171 is installed, without the need for manual handling and installation, saving time and effort.

[0084] The overall diameter of the split ball joint 100 is approximately 6.8 meters, which will not take up too much space and will not affect the installation of other structures.

[0085] Each hydraulic support 121 is connected to a hydraulic system and an electrical control system: the hydraulic system can inject liquid into the hollow rubber plate 124 to expand the hollow rubber plate 124 and lift the lifting member 123; the electrical control system is configured to monitor the pressure information of the hollow rubber plate 124 to monitor the balance of the bridge in real time.

[0086] Specifically, the hydraulic system may include a pump station, oil pump, shut-off valve, check valve, relief valve, etc. The oil pump injects liquid substances such as hydraulic oil or resin into the hollow rubber plate 124, causing the hollow rubber plate 124 to expand. Because the hollow rubber plate 124 is constrained by the seat 122, it can only expand vertically, thereby raising the lifting member 123. When the liquid pressure inside the hollow rubber plate 124 is too high, exceeding the relief valve's set value, the liquid flows out, and the height of the lifting member 123 decreases.

[0087] Each hydraulic support 121 can be interconnected and have its height adjusted simultaneously, or its individual shut-off valve can be closed to make the hydraulic supports 121 different from each other, thereby allowing for individual height adjustment.

[0088] A threaded hole is provided on the support, which communicates with the interior of the support. The pressure sensor is installed inside the threaded hole and is threadedly connected to it. The contact head of the pressure sensor contacts the hollow rubber plate 124. When the hollow rubber plate 124 is compressed and deformed, it expands outwards and is isotropic in all directions. The contact head of the pressure sensor is squeezed by the hollow rubber plate 124, thereby transmitting the pressure signal and allowing the operator to intuitively know the pressure information through the control system.

[0089] The split-type ball joint 100 has the following advantages: the intelligent auxiliary support 12 can share the force of the central ball joint structure 11, making the central ball joint structure 11 smaller while meeting the load-bearing capacity requirements; the intelligent auxiliary support 12 monitors the balance of the bridge in real time, so that the staff can know the various parameters during the bridge rotation process in a timely manner, which is convenient for timely adjustment; after the bridge is rotated into place, the intelligent auxiliary support 12 can serve as an auxiliary structure to lift the bridge together with the hydraulic jack, so that the central ball joint structure 11 rotates vertically, avoiding the problem of difficult posture adjustment caused by insufficient installation space for the outer lifting equipment; the intelligent auxiliary support 12 can significantly improve the efficiency of balance weighing and posture adjustment, and significantly reduce the cost of measures, which can be reduced by about 65% compared with conventional methods.

[0090] In addition, the support structure includes annular slide 202, support leg 203 and temporary sand box 204, etc. The support structure can refer to the existing technology. The annular slide 202 is set on the periphery of the split ball joint 100. The upper part of the support leg 203 is located inside the upper bearing platform 201 and its bottom end cooperates with the annular slide 202. The temporary sand box 204 is set between the lower bearing platform 200 and the upper bearing platform 201 and is removed before the bridge rotation begins.

[0091] The traction structure includes a traction reaction seat 205, a traction hydraulic press 206, and a traction cable 207. The traction reaction seat 205 is mounted on the lower bearing platform 200. The traction hydraulic press 206 is mounted on the traction reaction seat 205 and connected to the upper bearing platform 201 via the traction cable 207. The traction cable 207 is tangential to the upper bearing platform 201 and is wound circumferentially. When the traction hydraulic press 206 pulls the traction cable 207, it can traction the bridge to rotate.

[0092] For the construction and rotation methods of the bridge and the rotation system 10, please refer to the third embodiment.

[0093] Second Embodiment

[0094] Please refer to Figure 1 As shown, the second embodiment of the present invention provides an intelligent reusable rotating system 10 for ultra-large tonnage bridges, which is a further improvement on the first embodiment. The improvement points are:

[0095] During or after bridge construction, rotation, or completion, adjustments to the bridge's longitudinal attitude may be necessary due to construction errors or other reasons. This involves raising certain sections and lowering others to ensure precise closure of the bridge. During these adjustments, the upper ball joint 112 rotates. This causes a slight tilt to the bottom surface of the upper abutment 201. Although the tilt is very small, it still affects the contact surface between the auxiliary slide 120 and the lifting component 123. This results in some contact points having excessive pressure while others have insufficient pressure, leading to uneven stress on the hydraulic support 121 and impacting its service life.

[0096] Therefore, in this embodiment, the following technical solution is provided: the lifting member 123 includes a fixed member 130 and a movable member 131. The fixed member 130 is vertically and flexibly disposed within the adjustment cavity. Hollow rubber plates 124 abut against the bottom surface of the seat 122 and the fixed member 130, and the hollow rubber plates 124 can lift the fixed member 130. The movable member 131 is disposed at the top of the fixed member 130. When the fixed member 130 is raised or lowered, it can drive the movable member 131 to rise or fall. The movable member 131 is used for sliding cooperation with the auxiliary slide rail 120.

[0097] The fixed part 130 and the movable part 131 are in sliding engagement, and the direction and range of movement of the movable part 131 are limited. Specifically, the top surface of the fixed part 130 is a first spherical surface 132, which is concave downwards. The bottom surface of the movable part 131 is a second spherical surface 133, and the top surface is a plane that slides with the auxiliary slide rail 120. The first spherical surface 132 and the second spherical surface 133 are in sliding engagement. A polytetrafluoroethylene sliding plate or grease can be provided between the first spherical surface 132 and the second spherical surface 133.

[0098] With the first spherical surface 132 remaining stationary, the second spherical surface 133 can rotate moderately around the center of the sphere, that is, the second spherical surface 133 slides relative to the first spherical surface 132, and the centers and diameters of the first spherical surface 132 and the second spherical surface 133 are the same. No matter how the second spherical surface 133 rotates, the first spherical surface 132 and the second spherical surface 133 can be in close contact.

[0099] When adjusting the longitudinal attitude of the bridge, regardless of the direction in which the bridge deviates, the movable parts 131 corresponding to each hydraulic support 121 can rotate accordingly, ensuring that the top surface of the movable part 131 is always in close contact with the auxiliary slide rail 120. This ensures balanced force distribution at all points on the top surface of the movable part 131, preventing pressure concentration. Furthermore, even if the movable part 131 deflects, when the bridge turns, the first spherical surface 132 of the fixed part 130 will still prevent the movable part 131 from making circular motion around the pin 111, thus fixing the position of the hydraulic support 121.

[0100] Furthermore, after the upper foundation 201 and the pier body are poured, hoisting tools cannot be used to lift the various components, which weigh from a few kilograms to several hundred kilograms. These components must be moved manually. Moreover, the distance between the upper foundation 201 and the lower foundation 200 is very small, generally around one meter, making equipment movement extremely difficult in such a confined space. This is especially true for structures such as hydraulic jacks and hydraulic supports 121, which are quite heavy. Hydraulic supports 121 need to be recycled to save costs. Therefore, in this embodiment, the following improvement is provided: a transfer assembly 140 is installed on the hydraulic support 121. The transfer assembly 140 includes a support frame 170, a traveling frame, a manual jack 143, and a lifting assembly 144.

[0101] The hydraulic support 121 is generally cylindrical, and the support frame 170 has a U-shaped structure. The support frame 170 includes two support parts that are arranged relatively apart and a connecting part for connecting one end of the two support parts. The opening width of the U-shaped structure is greater than the diameter (or width) of the hydraulic support 121. The support frame 170 can be inserted into the hydraulic support 121, that is, the hydraulic support 121 can enter the interior of the U-shaped structure through the opening of the U-shaped structure.

[0102] The hydraulic support 121 has support seats 134 on both sides, and each support seat 134 has a lifting part that matches it. The support seats 134 can be raised and lowered. When the support seats 134 rise, the lifting parts can abut against the support seats 134 and lift the hydraulic support 121 through the support seats 134, so that the hydraulic support 121 is lifted off the ground. The matching relationship between the support seats 134 and the lifting parts is not limited. For example, the support seats 134 can adopt a block structure with a flat bottom, and the top surface of the lifting parts can adopt a plane that can contact the ground of the support seats 134. In other embodiments, the support seats 134 and the lifting parts can also be snapped together, etc.

[0103] The traveling frame is mounted on the support frame 170. Specifically, the traveling frame includes one first traveling frame 145 and two second traveling frames 146. The first traveling frame 145 is located at the rear end of the support frame 170, and a caster wheel 149 is provided at the bottom end of the first traveling frame 145. Specifically, in this embodiment, the first traveling frame 145 includes a fixed part 147 and a universal shaft 148. The universal shaft 148 is vertically arranged and can rotate around its own center line. The caster wheel 149 is rotatably mounted at the bottom end of the universal shaft 148. When the fixed part 147 remains stationary, when the universal shaft 148 rotates around its own axis, it can drive the caster wheel 149 to turn. Here, the caster wheel 149 can be a common roller 150, which works with the universal shaft 148 to achieve the functions of turning and traveling.

[0104] The second traveling member is pivotally connected to the support frame 170. The second traveling member can rotate relative to the support frame 170. The rotation center line of the second traveling member is set in the horizontal direction. The bottom end of the second traveling frame 146 is provided with a roller 150. When the second traveling frame 146 rotates, it can raise and lower the support frame 170.

[0105] The structure of the manual jack 143 is based on existing technology, which is relatively mature. It primarily lifts the jack by manually pressing up and down the pressure-applying part; to lower it, the pressure relief valve can be opened. The manual jack 143 is mounted on the fixed part 147 of the first traveling frame 145. The manual jack 143 is fixed to the fixed part 147, and the rotation of the universal joint 148 drives the manual jack 143 to rotate. The top of the manual jack 143 is rotatably engaged with the support frame 170, with the rotation center line set vertically or connected to the support frame 170 via a ball joint. When the manual jack 143 is raised or lowered, it can also raise or lower the rear end of the support frame 170.

[0106] The manual jack 143 is equipped with a swing arm 151 for applying pressure. By pressing the swing arm 151 up and down, the manual jack 143 can be raised. In addition, the swing arm 151 includes a connecting rod 156 and a grip handle 157. One end of the connecting rod 156 is hinged to the manual jack 143 and the other end is connected to the grip handle 157. The grip handle 157 is ring-shaped. A return spring 158 is provided between the connecting rod 156 and the first traveling frame 145. The return spring 158 causes the swing arm 151 to have an upward swing tendency.

[0107] While the manual jack 143 lifts the rear end of the support frame 170, the support frame 170 as a whole needs to be raised and lowered. The specific structure is as follows: the lifting assembly 144 includes a drive shaft 152, a first rotating arm 153, two second rotating arms 154 and two drive arms 155.

[0108] The drive shaft 152 is located at the rear end of the support frame 170. The drive shaft 152 is rotatably positioned in the horizontal direction and extends along the width direction of the support frame 170. The drive shaft 152 is rotatably supported on the support frame 170 and can rotate around its own axis. The first rotating arm 153 and the second rotating arm 154 extend radially along the drive shaft 152, respectively. When the drive shaft 152 rotates, it can drive the first rotating arm 153 and the second rotating arm 154 to swing simultaneously.

[0109] The two ends of the first rotating arm 153 are hinged to the first traveling frame 145 and the support frame 170, respectively. The first rotating arm 153 is the driving component and is telescopic, capable of driving the transmission shaft 152 to rotate, thereby causing the second rotating arm to swing synchronously. In this embodiment, the lifting assembly 144 includes two first rotating arms 153, which are respectively hinged to the fixed part 147, and the center lines of the two hinged parts coincide. The manual jack 143 is fixed to the universal joint 148. This arrangement ensures the stability between the fixed part 147 and the first rotating arm 153.

[0110] The two ends of the transmission arm 155 are respectively hinged to the second rotating arm 154 and the second traveling frame 146. When the second rotating arm 154 swings, it can drive the second traveling frame 146 to swing.

[0111] The working principle of the lifting assembly 144 is as follows: The manual jack 143, the first rotating arm 153, and the support frame 170 form a triangular structure. This triangular structure includes a first side (the line connecting the connection between the manual jack 143 and the support frame 170, and the hinge between the fixed part 147 and the first rotating arm 153), a second side (the line connecting the connection between the manual jack 143 and the support frame 170, and the hinge between the support frame 170 and the first rotating arm 153), and a third side (the line connecting the fixed part 147 and the first rotating arm 153). The hinge of arm 153, the line connecting the support frame 170 and the hinge of the first rotating arm 153, wherein the lengths of the first side and the third side are variable, the length of the second side is fixed, the angle between the first side and the second side is fixed, and the angles between the first side and the third side, as well as the angles between the second side and the third side, are variable. Therefore, when the manual jack 143 lifts, it drives the support frame 170 to rise as a whole, and the hinge between the support frame 170 and the first rotating arm 153 rises, and the first drive shaft 152 rotates.

[0112] The second rotating arm 154, the support frame 170, the second traveling frame 146, and the transmission arm 155 form a parallel four-bar linkage. When the first rotating arm 153 swings, it can drive the transmission shaft 152 to rotate. The transmission shaft 152 can drive the second rotating arm 154 to swing. The second rotating arm 154 drives the second traveling frame 146 to swing through the transmission arm 155, thereby changing the height of the support frame 170.

[0113] In summary, when the height of the manual jack 143 changes, the first rotating arm 153 swings and drives the second rotating arm 154 to swing through the transmission shaft 152, so that the second traveling frame 146 rotates and the front and rear ends of the support frame 170 rise and fall simultaneously.

[0114] To remove the hydraulic support 121, simply press the swing arm 151 up and down to raise the support frame 170 with the manual jack 143. The raised part will then abut against the support seat 134. As the support frame 170 continues to rise, the hydraulic support 121 will be lifted off the ground. Then, the hydraulic support 121 can be pulled out by gripping the handle 157. Conversely, to lower the hydraulic support 121, simply open the pressure relief valve of the manual jack 143. The top surface of the steel frame 141 may be provided with a recess for embedding the support seat 134 to ensure that the hydraulic support 121 does not rotate abnormally.

[0115] In some other embodiments, the following approach may also be adopted: Please refer to... Figures 11-13 As shown, the hydraulic support 121 is provided with an annular adjustment groove 126 and a locking tooth ring 127 in the circumferential direction, and the support base 134 includes a slide 135 and a locking element 136.

[0116] The slide block 135 is slidably disposed within the adjusting groove 126. The mating structure between the two is not limited. For example, in this embodiment, the adjusting groove 126 has a T-shaped cross-section, and one end of the slide block 135 has a T-shaped cross-section, matching each other. Of course, since the adjusting groove 126 is an annular groove, the side of the slide block 135 near the hydraulic support 121 can be cylindrical or other shapes. Because the slide block 135 can slide along the adjusting groove 126, the position of the adjusting groove 126 can be adjusted, allowing the slide block 135 to be supported by the steel frame 141.

[0117] The locking member 136 is movably disposed on the slide 135 for locking and unlocking the position of the slide 135. Specifically, the locking member 136 has a rotating part 137 and a locking head 138. The rotating part 137 is L-shaped, and the middle part of the rotating part 137 is rotatably disposed on the slide 135. The first end of the rotating part 137 protrudes from the lower surface of the slide. The reason for the rotating part 137 being protruding is that when the steel frame 141 supports the slide 135 from below, it can drive the first end of the rotating part 137 to rise, and the rotating part 137 can rotate.

[0118] The locking head 138 is fixedly disposed at the second end of the rotating part 137. The locking head 138 and the locking tooth ring 127 are respectively provided with mutually meshing limiting teeth. As the rotating part 137 rotates, the locking head 138 and the locking tooth ring 127 can mesh with each other or disengage from each other.

[0119] When using the transfer assembly 140 to transport the hydraulic support 121, the steel frame 141 is inserted under the slide 135, and then the steel frame 141 is gradually raised. The steel frame 141 first contacts the first end of the rotating part 137 and drives the rotating part 137 to rotate until the steel frame 141 contacts and supports the slide 135. The locking member 136 rotates until the locking head 138 engages with the locking gear ring 127. Please refer to [reference needed]. Figure 12 As shown. When the hydraulic support 121 needs to be lowered, the steel frame 141 is gradually lowered, and the steel frame 141 disengages from the slide block 135. Under its own weight, the locking member 136 rotates until the locking head 138 disengages from the locking gear ring 127. The slide block 135 can then rotate along the adjusting groove 126. Please refer to... Figure 13 As shown.

[0120] By adding the above structure, the position of the slide 135 can be adjusted to match the position of the transfer component 140 without adjusting the transfer component 140, saving time and effort. Furthermore, the position of the slide 135 is fixed during the transfer process, making it less likely for accidents to occur.

[0121] Third Embodiment

[0122] Please refer to Figure 1 As shown, the third embodiment of the present invention provides an intelligent and repeatable rotation method for ultra-large tonnage bridges, which uses the rotation system 10 in the first or second embodiment.

[0123] To more clearly describe the structure of each component, this embodiment provides a detailed description of the construction method of the rotation system 10 and the bridge. Based on the construction method, the rotation method can be made clearer and more understandable.

[0124] Construction methods include:

[0125] Protective construction: Pneumatic suspended piles are poured around the planned lower pier cap 200 or around other existing bridge piers, with a protective depth of 10m-20m. Due to the large excavation depth of the lower pier cap 200, the pneumatic suspended piles can prevent the construction of the lower pier cap 200 from having a significant impact on the surrounding terrain.

[0126] Drilled pile construction: Multiple drilled piles are cast at a distance of 200mm from the lower foundation. The number of drilled piles is determined as needed, for example, 16 piles in 4 rows and 4 columns. The diameter of the drilled piles can be 1.8m-2m, and the length can be 10m-50m. The construction process of the drilled piles can be as follows: drill holes at the predetermined locations using an impact drill, then place the reinforcing cage and pour concrete. In other embodiments, the above parameters can be adapted to other schemes.

[0127] Construction of the 200mm lower foundation: Excavate the 200mm foundation of the lower foundation. After the excavation is completed, set up drainage ditches, and then proceed with the following steps in sequence: breaking pile heads, leveling the base, pouring the cushion layer, tying reinforcing bars, installing the steel frame 141, installing prestressed steel strands (using single-end tensioning), arranging cooling water pipes, and pouring the first part (C40 concrete, etc. can be used).

[0128] Construction of the rotating system 10: Install the steel frame 141, level it, and weld it to the foundation reinforcement; then install the frame steel of the annular slide 202 and adjust it into place; tie the reinforcement and pour the second part of the lower foundation 200; hoist the lower ball joint 110 onto the mounting frame and hoist the annular slide 202 (split type) onto the frame steel; after adjustment, weld the lower ball joint 110 onto the mounting frame; place temporary locking I-beams, limiting I-beams, and reverse thrust I-beams, and pour the third part of the lower foundation 200; hoist the hydraulic supports 121 onto the mounting frame and fix them; hoist and install the pin 111; clean the concave surface of the lower ball joint 110 and install the PTFE sliding plate from the inside out, and apply grease or other lubricant; hoist and install the upper ball joint 112 and the upper concrete cylinder 171, and rotate and lubricate them.

[0129] Construction of upper foundation 201: pour traction reaction seat 205; install temporary sand box 204, formwork, support leg 203, etc., wherein the support leg 203 is located above the annular slide 202 and is poured to form the upper turntable; install traction hydraulic press 206 and traction cable 207; pour upper foundation 201.

[0130] Pier body casting construction: Casting the pier body.

[0131] Bridge pouring construction: pouring the zero beam segment; pouring the remaining beam segments symmetrically towards both ends in sections; constructing the bridge's ancillary structures.

[0132] After the bridge is completed, an application for road closure must be submitted to the department in charge of transportation. The closure period is generally limited to two hours. During this period, the road will be closed and vehicles or pedestrians will not be allowed to pass.

[0133] The twisting method includes the following steps:

[0134] S1, release the bridge rotation constraint, wherein step S1 includes:

[0135] S11, Adjust the height of the hydraulic support 121 to match the height of the central ball joint structure 11;

[0136] S12, adjust the force on the intelligent auxiliary support 12 to the preset proportion of the design load;

[0137] S12, symmetrically release the temporary support and temporary sand box 204, so that the bridge gravity is gradually transferred to the split ball joint 100.

[0138] S2, perform balance adjustment on the bridge, wherein step S2 includes:

[0139] S21, the force conditions of each support point are monitored in real time through hydraulic support 121;

[0140] S22, add counterweights to balance the forces at each support of the bridge;

[0141] S23, adjust the force on the split ball joint 100 to the design working condition. Among them, the intelligent auxiliary support 12 bears the first preset weight threshold, and the central ball joint structure 11 bears the second preset weight threshold.

[0142] S3, rotate the bridge to a preset position, wherein step S3 includes:

[0143] S31, the bridge is pulled by traction equipment to rotate at a preset angle for trial, and the rotation parameters of the bridge are observed;

[0144] S32, the bridge continues to rotate, and the balance of the bridge is monitored in real time by hydraulic support 121, and adjustments are made in real time according to the monitoring results until the bridge rotates into place.

[0145] S4, After the bridge is rotated into place, its attitude is adjusted. Step S4 includes:

[0146] Step S41: Measure and determine the longitudinal bridge attitude adjustment direction;

[0147] Step S42: The support force in the corresponding direction is unloaded in stages, and the jacking system loads synchronously in the opposite direction to ensure that the sum of the jacking forces on the axis is not lower than the design value, until the central ball joint structure 11 rotates vertically.

[0148] Step S43: Collect data on the support force and structural attitude;

[0149] Step S44: Repeat steps S41 to S43 until the closure is precise;

[0150] Step S45: Adjust the lateral posture using the same method.

[0151] S5, pouring and sealing, wherein step S5 includes:

[0152] S51, remove the hydraulic support 121;

[0153] S52, reinforced concrete is poured at the connection between the upper bearing platform 201 and the lower bearing platform 200.

[0154] In the invention patent application No. 2020112022986, entitled "Bridge Slewing System and Its Application in Bridge Slewing Construction" (hereinafter referred to as the prior art), although a height adjustment device is also mentioned, its applicable scenarios, the technical problems it solves, and its technical effects are completely different. Firstly, the height adjustment device in the bridge slewing system of the prior art is used for slewing construction, that is, when the bridge reaches its predetermined lifespan or needs to be dismantled for other reasons, it is used to replace the slewing bearing for slewing. It is not used during bridge construction and installation because the slewing bearing in the prior art can fully support the bridge, eliminating the need for a height adjustment device. The main significance of the height adjustment device is that, in the aging state of the slewing bearing, the height adjustment device replaces the slewing bearing for slewing, rather than providing joint support. As is well known, the service life of a bridge is several decades. If the slewing bearing and height adjustment device were exposed to the air according to the approach in the prior art, they would quickly rust and become unusable, making it impossible for them to reach a lifespan of several decades. Secondly, if the upper pier 201 and the lower pier 200 are supported only by the support legs 203, the slewing bearings, the height adjustment devices, etc., without the pouring of reinforced concrete, the strength of the pier will not meet the requirements at all. Furthermore, the support legs 203, the slewing bearings, the height adjustment devices, etc. are prone to corrosion, which will further reduce their strength.

[0155] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An intelligent, reusable rotation system for ultra-large tonnage bridges, characterized in that, It includes a split-type ball joint, which includes a central ball joint structure that shares the load and an intelligent auxiliary support using an electronic control system; The central ball joint structure includes a lower ball joint, a pin, and an upper ball joint, wherein the lower ball joint and the upper ball joint are rotatably engaged by the pin. The intelligent auxiliary support includes an auxiliary slide rail and several hydraulic supports, which are evenly distributed around the central ball joint structure. The auxiliary slide rail is annular and coaxially arranged with the pin shaft. The auxiliary slide rail is located on the upper bearing platform and the hydraulic supports are detachably located on the lower bearing platform, or the auxiliary slide rail is located on the lower bearing platform and the hydraulic supports are detachably located on the upper bearing platform. The hydraulic supports are capable of lifting and lowering so that the auxiliary slide rail and the hydraulic supports can slide in contact. The intelligent auxiliary support is configured to share the force of the central ball joint structure, monitor the balance of the bridge in real time, and assist in jacking after the bridge is rotated into place. The hydraulic support includes a base body, a lifting component, and a hollow rubber plate. The base body is detachably mounted on the lower bearing platform. The auxiliary slide rail is composed of multiple auxiliary sliding plates and is detachably mounted on the upper bearing platform. The base body has an adjustment cavity. The lifting component is vertically and vertically mounted within and extends from the adjustment cavity. The top end of the lifting component slides in conjunction with the auxiliary slide rail. The hollow rubber plate is located within the adjustment cavity and is used to lift the lifting component. Each hydraulic support is connected to a hydraulic system and an electrical control system. The hydraulic system is configured to inject a liquid substance into the hollow rubber plate to expand the hollow rubber plate and lift the lifting component. The electrical control system is configured to monitor the pressure information of the hollow rubber plate to monitor the balance of the bridge in real time. The hydraulic support is equipped with a transfer assembly, which includes a support frame, a traveling frame, a manual jack, and a lifting assembly. The support frame is U-shaped with an opening width greater than the diameter or width of the hydraulic support. Support seats are provided on both sides of the hydraulic support, and lifting parts matching the support seats are provided on the support seats. The traveling frame includes one first traveling frame and two second traveling frames. The first traveling frame is located at the rear end of the support frame and is equipped with casters. The second traveling frames are pivotally connected to the support frame and are equipped with rollers. The manual jack is located on the first traveling frame and is used to lift the support frame. The manual jack is equipped with a swing arm for applying pressure. The lifting assembly includes a drive shaft, a first rotating arm, two second rotating arms, and two drive arms. The drive shaft rotates horizontally and is supported on the support frame. The first and second rotating arms extend radially along the drive shaft. One end of the first rotating arm is hinged to the first traveling frame, and the other end is connected to the drive shaft. The first rotating arm is telescopic. Both ends of the drive arms are hinged to the second rotating arms and the second traveling frame, respectively. The manual jack, the first rotating arm, and the support frame form a triangular structure, while the second rotating arms, the support frame, the second traveling frame, and the drive arms form a parallel four-bar linkage. When the height of the manual jack changes, the first rotating arm swings and drives the second rotating arms to swing via the drive shaft, causing the second traveling frame to rotate. The front and rear ends of the support frame rise and fall simultaneously.

2. The system according to claim 1, characterized in that, The split ball joint also includes a support assembly, which includes a steel frame and an upper concrete cylinder. The steel frame is disposed on the lower support platform, the upper concrete cylinder is disposed on the upper support platform, the lower ball joint and the hydraulic support are disposed on the steel frame, and the upper ball joint and the auxiliary slide are disposed below the upper concrete cylinder. The lifting component includes a fixed component and a movable component. The fixed component is vertically and vertically disposed within the adjustment cavity, and the movable component is disposed at the top of the fixed component. The top surface of the fixed component is a first spherical surface, the bottom surface of the movable component is a second spherical surface, and the top surface of the movable component is a plane that slides with the auxiliary slide rail. The first spherical surface and the second spherical surface have the same center and diameter, and the first spherical surface slides with the second spherical surface.

3. The system according to claim 1, characterized in that, The first traveling frame includes a fixed part and a universal joint. The lifting assembly includes two first rotating arms, which are respectively hinged to the fixed part and the center lines of the two hinged parts coincide. The universal joint is arranged vertically and can rotate around its own center line. The manual jack is fixed to the universal joint.

4. The system according to claim 1, characterized in that, The swing arm includes a connecting rod and a gripping handle. One end of the connecting rod is hinged to the manual jack and the other end is connected to the gripping handle. The gripping handle is ring-shaped. A return spring is provided between the connecting rod and the first traveling frame. The return spring causes the swing arm to have an upward swinging tendency.

5. The system according to claim 1, characterized in that, The rotation system also includes an annular slide, support legs, a temporary sand box, and a traction structure; the annular slide is located around the split ball joint, the upper part of the support legs is located inside the upper bearing platform and its bottom end cooperates with the annular slide, and the temporary sand box is located between the lower bearing platform and the upper bearing platform and is configured to be removed before the bridge rotation begins; The traction structure includes a traction reaction seat, a traction hydraulic press, and a traction cable. The traction reaction seat is disposed on the lower bearing platform, and the traction hydraulic press is disposed on the traction reaction seat and connected to the upper bearing platform through the traction cable. The traction cable is tangential to the upper bearing platform and is wound around it in a circumferential direction. When the traction hydraulic press pulls the traction cable, it can traction the bridge to rotate.

6. The system according to claim 1, characterized in that, The intelligent auxiliary support includes twelve hydraulic supports, which are evenly distributed around the central ball joint structure and are adjacent to the lower ball joint.

7. The system according to claim 2, characterized in that, The hydraulic support has an annular adjusting groove and a locking gear ring in its circumferential direction. The support includes a slide and a locking element. The slide is slidably disposed in the adjusting groove. The locking element has a rotating part and a locking head. The rotating part is L-shaped, with its middle part rotatably disposed on the slide and its first end protruding from the lower surface of the slide. The locking head is fixedly disposed on the second end of the rotating part. The locking head and the locking gear ring are respectively provided with mutually meshing limiting teeth. When the steel frame contacts and supports the slide, the locking element rotates under the action of the steel frame until the locking head meshes with the locking gear ring. When the steel frame disengages from the slide block, the locking member rotates under its own weight until the locking head disengages from the locking tooth ring, and the slide block can rotate along the adjusting groove.

8. A method for intelligent, repeatable rotation of ultra-large tonnage bridges, characterized in that, Using the rotation system according to any one of claims 1-7, comprising: S1, release the bridge rotation constraint; step S1 includes: S11, adjust the height of the hydraulic support to be consistent with the height of the central ball joint structure; S12, adjust the force on the intelligent auxiliary support to the preset ratio of the design load; S12, symmetrically release the temporary support and temporary sand box, so that the bridge gravity is gradually transferred to the split ball joint. S2, balance adjustment of the bridge; step S2 includes: S21, real-time monitoring of the force at each support point through hydraulic bearings; S22, loading counterweights to balance the force at each support point of the bridge; S23, adjusting the force on the split ball joint to the design condition, wherein the intelligent auxiliary bearing bears the first preset weight threshold and the central ball joint structure bears the second preset weight threshold. S3, rotate the bridge to the preset position; step S3 includes: S31, pull the bridge to rotate at a preset angle using traction equipment and observe the bridge's rotation parameters; S32, continue rotating the bridge, monitor the bridge's balance in real time using hydraulic supports, and adjust in real time according to the monitoring results until the bridge is rotated into position. S4, After the bridge is rotated into place, its attitude is adjusted; Step S4 includes: Step S41, measuring and determining the longitudinal bridge attitude adjustment direction; Step S42, unloading the support force in the corresponding direction in stages, with the jacking system loading synchronously in the opposite direction to ensure that the sum of the jacking forces on the corresponding axis is not lower than the design value, until the central ball joint structure rotates vertically; Step S43, collecting support force and structural attitude data; Step S44, repeating steps S41 to S43 until precise closure; Step S45, adjusting the transverse bridge attitude in the same way; S5, pouring and sealing; step S5 includes: S51, removing the hydraulic support; S52, pouring concrete at the connection between the upper and lower bearing platforms.

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