A beam body large inclination attitude adjustment control swivel structure and a swivel construction method thereof

Abstract

A kind of beam body large inclination attitude adjustment control swivel structure and its swivel construction method, including upper bearing platform (1) and lower bearing platform (2), characterized by: rotating spherical hinge device is installed between the upper bearing platform (1) and lower bearing platform (2), the outer side of upper bearing platform (1) is fixedly provided with traction end embedded part (3), and one end of replaceable traction cable (5) is connected and fixed on traction end embedded part (3) by traction cable anchoring structure;The upper surface of lower bearing platform (2) is fixedly provided with the slide steel plate (9) of annular distribution, and the bottom of top drop adjustment support structure is provided with rolling device, the present application has reasonable structure, adopts anti-pulling and anti-overturning structure, and very good swivel rotation effect is achieved, simultaneously, it can cross barrier in the mode of vertically lifting swivel beam body single end, and can reduce swivel friction to the greatest extent, and bridge swivel safety performance is good.

Description

Technical Field

[0001] This invention relates to a bridge rotation structure, and more particularly to a bridge beam large-angle tilt attitude adjustment and control rotation structure and its rotation construction method, belonging to the field of bridge engineering technology. Background Technology

[0002] In recent years, bridge rotation construction has become a widely used method for crossing busy railways, highways, deep and fast-flowing canyons, and busy waterways. It provides a reliable guarantee for the safety, quality, and progress of bridge construction under special conditions. Rotation construction technology is increasingly favored by bridge builders due to its economic, convenient, and reliable characteristics. Currently, domestic bridge rotation ball joint devices can achieve beam rotation and small-angle vertical rotation. However, when adjusting the beam's attitude at large inclination angles and performing large-range vertical rotation, the gap between the upper and lower ball joints is used for rotation, making it difficult to achieve large-range adjustments to the bridge beam's attitude at large inclination angles. In actual engineering projects, some bridge rotations require crossing suddenly elevated obstacles, which cannot be moved or have their height changed. The only way to achieve rotation is to vertically raise the rotating beam to cross the obstacle at one end. Existing rotation structures cannot meet these construction requirements.

[0003] During bridge rotation construction, especially for asymmetrical rotating bridge structures such as curved bridges and bridges with variable cross-sections, uneven stress can occur on the upper and lower ball joints. The upper and lower ball joints are prone to relative sliding, causing cracks in the bridge abutment concrete and potentially leading to bridge overturning. The concrete ball joints also pose safety hazards due to strength issues. Existing bridge rotation ball joint devices have insufficiently firm connections between the upper and lower ball joints and the upper and lower concrete bearing platforms, resulting in poor pull-out and overturning resistance. During the rotation of asymmetrical rotating bridge structures, cracks can easily appear in the bridge abutment concrete, and in severe cases, bridge overturning may occur.

[0004] Existing bridge rotation structures also employ auxiliary support methods using supporting feet. These friction-based sliding mechanisms rely on contact with the sliding steel plates, resulting in high frictional resistance during rotation and requiring substantial traction force. Furthermore, the rotation process can easily damage the bridge structure. Additionally, current bridge rotation traction steel strands are pre-embedded in the upper abutment concrete, leading to complex protective measures, difficulties in installing the upper abutment formwork, and, more importantly, susceptibility to corrosion and rust. Under traction stress during rotation, these strands may even break, posing significant safety hazards. Existing bridge rotation structures have failed to effectively address these technical problems. There has been a lack of a structurally sound, easily installed, and adaptable rotation structure and construction method capable of handling large-angle beam inclination adjustments to solve these issues. Summary of the Invention

[0005] The first objective of this invention is to address the shortcomings of existing bridge rotation hinge devices, which suffer from simple structures, insufficiently robust connections between the upper and lower ball joints and the upper and lower concrete bearing platforms, poor pull-out and overturning resistance, unsuitability for asymmetric bridge rotation operations and large-angle beam rotation operations, excessive frictional resistance during rotation, and the inability to monitor load changes and load distribution of the ball joints in real time during actual rotation, resulting in weak risk control capabilities for bridge rotation. This invention provides a structurally sound system with pull-out and overturning resistance, optimized and strengthened connection and fixing methods with the upper and lower bridge bearing platforms. Through the rotational engagement of a conical sleeve and a conical pin, and the rotational engagement of a convex ball panel and a concave ball panel, it achieves excellent rotational performance. It also allows for vertically raising one end of the rotating beam to cross obstacles, minimizes rotational friction, and enables real-time monitoring of load changes and load distribution of the ball joints during actual rotation, resulting in a bridge rotation safety performance. This invention offers a beam large-angle attitude adjustment and control rotation structure.

[0006] The second objective of this invention is to address the shortcomings and deficiencies of existing bridge rotation structures, which are unable to adequately adapt to the construction requirements of asymmetric bridge rotation and large-angle beam rotation operations, have poor pull-out and overturning resistance, experience high frictional resistance during rotation, and are prone to corrosion and breakage of pre-embedded traction steel strands, posing significant safety hazards. This invention provides a rotation construction method that utilizes a beam large-angle attitude adjustment and control structure, offering convenient rotation construction, good pull-out and overturning resistance, well adaptability to the construction requirements of asymmetric bridge rotation and large-angle beam rotation operations, lower frictional resistance during rotation, and improved rotation safety.

[0007] To achieve the above-mentioned objectives, the technical solution of this invention is: a beam body large tilt angle attitude adjustment and control rotation structure, including an upper support platform and a lower support platform. An eccentric rotating ball joint device is installed between the upper support platform and the lower support platform. The rotating ball joint device includes a convex ball joint and a concave ball joint. A traction end embedded part is fixedly installed on the outer side of the upper support platform. The traction end embedded part is connected and fixed to one end of a replaceable traction cable through a traction cable anchoring structure. A ring-shaped sliding rail steel plate is fixedly installed on the upper surface of the lower support platform and around the eccentric rotating ball joint device. A jacking adjustment support structure is fixedly installed at the bottom of the upper support platform directly above the sliding rail steel plate. A rolling device is installed at the bottom of the jacking adjustment support structure. The jacking adjustment support structure is supported on the sliding rail steel plate by the rolling device.

[0008] Furthermore, the eccentric rotating ball joint device includes a tensile rib plate, an upper ball joint circumferential rib plate, a convex ball panel, a conical sleeve, a shear stud, a reinforcing bar hole, upper bearing reinforcement, a concave ball panel, a fan-shaped slide plate, and a conical pin. The bottom of the upper bearing is fixed to the convex ball panel via the tensile rib plate and the upper ball joint circumferential rib plate. The convex surface of the convex ball panel faces downwards and has a high surface finish. A conical sleeve is vertically fixed at the center of the upper surface of the convex ball panel. The outer wall of the lower small-mouth end of the conical sleeve is fixed to the tensile rib plate, and the outer wall of the upper large-mouth end of the conical sleeve is fixed to the shear stud. The tensile reinforcement plate and the upper spherical hinge circumferential rib plate are respectively provided with transversely distributed steel bar holes. The upper bearing plate steel bar is inserted and fixed in the steel bar holes. The tensile reinforcement plate, the upper spherical hinge circumferential rib plate, the upper bearing plate steel bar and the upper bearing plate are formed into a stable integral structure by concrete pouring. A concave spherical panel is provided on the lower bearing plate to match the convex surface of the convex spherical panel. The concave surface of the concave spherical panel has a high smoothness. A tapered pin is coaxially fixed at the center of the convex spherical panel. The lower end of the tapered pin is fixed on the lower bearing plate. The tapered pin is installed in the tapered sleeve and the tapered pin and the tapered sleeve are rotatably engaged.

[0009] Furthermore, the traction cable anchoring structure includes an anchor, a replaceable traction cable, a pressure plate, a clamping screw, and a clamping plate. The anchor is fixed on the pre-embedded part at the traction end, and a pressure plate is installed on the anchor through the clamping screw. One end of the replaceable traction cable is located between the anchor and the pressure plate, and the replaceable traction cable is clamped and fixed between the anchor and the pressure plate by the clamping plate.

[0010] Furthermore, the top-and-bottom adjustment support structure includes an upper support cylinder, a support plate, a lower support cylinder, a locking component, and a lifting device. The lower end of the upper support cylinder is fitted into the cylinder installed in the lower support cylinder. A support plate is fixedly installed on the upper outer circumference of the upper support cylinder. A lifting device is installed between the bottom inner side of the upper support cylinder and the bottom of the lower support cylinder. The outer walls of the upper support cylinder and the lower support cylinder are connected and locked together by the locking component.

[0011] Furthermore, multiple upper rectangular tie rods are vertically fixed on the upper support platform. The upper rectangular tie rods are welded and fixed to the upper support platform steel bars. An upper spherical outer peripheral plate is fixed on the outer edge of the convex spherical panel. Multiple mounting holes are evenly opened on the upper spherical outer peripheral plate. The lower end of the upper rectangular tie rod passes through the mounting hole and is fixed by a fastening nut. An anti-loosening nut is installed on the outside of the fastening nut at the lower end of the upper rectangular tie rod.

[0012] Furthermore, multiple hook-shaped reinforcing ribs and lower rectangular tie rods are pre-embedded on the lower support platform in a ring-shaped even distribution. The hook-shaped reinforcing ribs are fixed to the bottom of the concave ball panel, and the upper end of the lower rectangular tie rod passes through the mounting hole on the concave ball panel and is fixed by a lock nut.

[0013] Furthermore, a PTFE sleeve is installed on the inner wall of the conical sleeve, the PTFE sleeve is located between the conical sleeve and the conical pin, a gap is left between the conical sleeve and the PTFE sleeve and lubricated with oil, there is a certain movable swing angle between the inner wall of the conical sleeve and the PTFE sleeve, the swing angle is 1 to 2 degrees, and a protective cover is provided at the bottom of the conical pin.

[0014] Furthermore, the concave spherical panel has multiple annular grooves of different diameters coaxially arranged on its concave surface, and a fan-shaped slide plate is provided on its concave surface. The fan-shaped slide plate is fixed to the concave spherical panel by an annular clamping plate installed in the annular groove. The annular clamping plate is connected and fixed by screws. The concave spherical panel and the fan-shaped slide plate are provided with through-hole vibration holes and vent holes. The fan-shaped slide plate has multiple oil guide grooves arranged radially. The oil guide grooves are connected to an oil supply device located on the periphery through pipes. An electric oil pump is provided in the oil supply device.

[0015] Furthermore, the rolling device includes a rolling limiting plate and rolling rods. The rolling limiting plate is fixedly installed at the bottom of the top adjustment support structure. Multiple rolling rod mounting slots are equally spaced along the annular edge of the rolling limiting plate, and one rolling rod is installed in each rolling rod mounting slot.

[0016] To achieve the second objective mentioned above, the technical solution of this invention is: a construction method for controlling the rotation of a structure by adjusting the large inclination angle of the beam, characterized by comprising the following steps:

[0017] a. First, install the concave ball joint of the eccentric rotating ball joint device on the lower bearing platform. Adjust the center point and the elevation of the concave ball joint to meet the design requirements before fixing it.

[0018] b. Next, clean the dirt on the concave ball joint panel, polish the surface of the concave ball joint panel to a glossy state, and apply lubricant to maintain good lubrication;

[0019] c. Hoist the convex ball joint into the concave surface of the concave ball joint, adjust it to be coaxial and centered to complete the assembly, and apply lubricating oil to the mating surfaces of the convex and concave ball joints to temporarily fix the concave and convex ball joints.

[0020] d. Next, pour the concrete for the lower foundation, compact the concrete at the bottom of the concave spherical hinge, and then cure the concrete.

[0021] e. Then, a slide rail steel plate is fixedly installed on the upper surface of the lower support platform, and a top-drop adjustment support structure is fixedly installed at the bottom of the upper support platform, so that the slide rail steel plate is located directly below the bottom of the top-drop adjustment support structure. In addition, a rolling device that provides rolling support is installed at the bottom of the top-drop adjustment support structure.

[0022] f. Weld and fix the anti-tension rib plate to the upper ball hinge circumferential rib plate and the upper bearing plate steel reinforcement to form a stable integral structure with the upper bearing plate. Fix the traction end embedded part on the outside of the upper bearing plate and connect and fix one end of the replaceable traction cable to the traction end embedded part through the traction cable anchoring structure.

[0023] g. Finally, pour the concrete for the upper foundation, compact the concrete at the bottom of the convex ball hinge, and cure the concrete to complete the construction of the rotating structure and prepare for the rotation.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention employs an eccentric rotating ball joint device composed of a convex ball joint structure and a concave ball joint structure, and has anti-pull-out and anti-overturning structures. It optimizes and strengthens the connection and fixing form between the upper and lower bridge abutments, improves the stress condition of the rotating ball joint device, and constrains the upper and lower ball joint structures in both horizontal and vertical directions, thus avoiding the risk of overturning caused by unbalanced moments in the bridge.

[0026] 2. The upper ball joint structure of this invention uses a conical sleeve structure as a rotation constraint member, and adopts a three-dimensional fixing structure composed of anti-pull-out ribs and annular ribs of the upper ball joint to fix the conical sleeve, convex ball panel and other components into a stable integral structure. At the same time, the lower ball joint structure uses a conical pin that rotates with the conical sleeve and is fixed to the concave ball panel. Through the rotational engagement of the conical sleeve and the conical pin, as well as the rotational engagement of the convex ball panel and the concave ball panel, a very good rotational effect is achieved.

[0027] 3. The present invention adopts a jacking and adjusting support structure. When the bridge needs to cross a sudden height obstacle during rotation, one end of the beam can be jacked up by the jacking and adjusting support structure, so that the bridge abutment is in a non-operational bridge slope state, which can easily vertically raise one end of the rotating beam and perform the rotation.

[0028] 4. The present invention has an annular sliding steel plate on the upper surface of the lower support platform, and a rolling device is fixedly installed at the bottom of the top adjustment support structure. The rolling method is used instead of sliding friction, which avoids damage to the bridge structure during the rotation process. At the same time, a replaceable traction cable structure is also adopted, which avoids the disadvantages of traditional pre-embedded structures that are prone to corrosion, rust or even breakage.

[0029] 5. The present invention has a reasonable structure and optimizes and strengthens the connection and fixing form between the upper and lower bridge abutments. Through the rotational cooperation of the conical sleeve and the conical pin, as well as the rotational cooperation of the convex ball plate and the concave ball plate, a very good rotation effect is achieved. In addition, the load change and load distribution of the rotating ball joint can be monitored in real time during the actual rotation process. The bridge rotation safety performance is good, and the risk prevention and control capability of bridge rotation is effectively improved. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the rotating structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the rotating structure and the beam of the present invention.

[0032] Figure 3 This is a schematic diagram of the traction cable part of the present invention.

[0033] Figure 4 yes Figure 3 Sectional view of AA.

[0034] Figure 5 This is a schematic diagram of the traction cable anchoring structure of the present invention.

[0035] Figure 6 This is a schematic diagram of the eccentric rotating ball joint device of the present invention.

[0036] Figure 7 This is a top view of the convex ball joint of the present invention.

[0037] Figure 8 This is a cross-sectional schematic diagram of the convex ball joint and the concave ball joint of the present invention.

[0038] Figure 9 This is a bottom view of the concave ball joint of the present invention.

[0039] Figure 10 This is a top view of the concave ball joint of the present invention.

[0040] Figure 11 This is a schematic diagram of the rectangular pin structure of the present invention.

[0041] Figure 12 This is a cross-sectional view of the top-drop adjustment support structure of the present invention.

[0042] Figure 13 This is a schematic diagram of the top-drop adjustment support structure of the present invention.

[0043] In the diagram: 1. Upper bearing platform; 2. Lower bearing platform; 3. Traction end embedded part; 4. Anchor; 5. Replaceable traction cable; 6. Pressure plate; 7. Clamping screw; 8. Slide rail steel plate; 9. Anti-pull-out rib plate; 10. Upper ball hinge circumferential rib plate; 11. Convex ball face plate; 12. Conical sleeve; 13. PTFE sleeve; 14. Upper rectangular tie rod; 15. Upper spherical outer outer plate; 16. Fastening nut; 17. Anti-loosening nut; 18. Shear stud; 19. Rebar hole; 20. Upper... 21. Foundation reinforcement, 22. Upper cover plate, 23. Concave spherical panel, 24. Fan-shaped slide plate, 25. Annular clamping plate, 26. Conical pin, 27. Pin nut, 28. Protective cover, 29. Hook-shaped reinforcing bar, 30. Lower rectangular tie rod, 31. Oil guide groove, 32. Oil supply device, 33. Vibration hole, 34. Vent hole, 35. Upper support cylinder, 36. Support plate, 37. Lower support cylinder, 38. Locking element, 39. Rolling limit plate, 40. Rolling rod. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] See Figures 1 to 13 The present invention discloses a beam body large tilt angle attitude adjustment and control rotation structure, comprising an upper support platform 1 and a lower support platform 2, characterized in that: an eccentric rotating ball joint device is installed between the upper support platform 1 and the lower support platform 2, the rotating ball joint device including a convex ball joint and a concave ball joint; a traction end embedded part 3 is fixedly provided on the outer side of the upper support platform 1, and the traction end embedded part 3 is connected and fixed to one end of a replaceable traction cable 5 through a traction cable anchoring structure; a ring-shaped sliding rail steel plate 9 is fixedly provided on the upper surface of the lower support platform 2 and located around the eccentric rotating ball joint device; a top-drop adjustment support structure is fixedly provided at the bottom of the upper support platform 1 directly above the sliding rail steel plate 9; a rolling device is provided at the bottom of the top-drop adjustment support structure, and the top-drop adjustment support structure is supported on the sliding rail steel plate 9 by the rolling device.

[0046] The eccentric rotating ball joint device includes a tensile reinforcement plate 10, an upper ball joint circumferential rib plate 11, a convex ball panel 12, a conical sleeve 13, a shear stud 19, a reinforcing bar hole 20, an upper bearing plate reinforcing bar 21, a concave ball panel 23, a fan-shaped slide plate 24, and a conical pin 26. The bottom of the upper bearing plate 1 is fixed to the convex ball panel 12 via the tensile reinforcement plate 10 and the upper ball joint circumferential rib plate 11. The convex surface of the convex ball panel 12 faces downwards and has a high surface finish. A conical sleeve 13 is vertically fixed at the center of the upper surface of the convex ball panel 12. The outer wall of the lower small-mouth end of the conical sleeve 13 is fixed to the tensile reinforcement plate 10, and the outer wall of the upper large-mouth end of the conical sleeve 13 is fixed to the shear stud 19. The tensile reinforcement plate 10 and the upper ball joint circumferential rib plate 11 are respectively provided with transversely distributed steel bar holes 20. The upper bearing plate steel bar 21 is inserted and fixed in the steel bar holes 20. The tensile reinforcement plate 10, the upper ball joint circumferential rib plate 11, the upper bearing plate steel bar 21 and the upper bearing plate 1 are formed into a stable integral structure by concrete pouring. The lower bearing plate 2 is provided with a concave ball joint panel 23 that matches the convex surface of the convex ball joint panel 12. The concave surface of the concave ball joint panel 23 has a high smoothness. A tapered pin 26 is coaxially fixed at the center of the convex ball joint panel 12. The lower end of the tapered pin 26 is fixed on the lower bearing plate 2. The tapered pin 26 is installed in the tapered sleeve 13 and the tapered pin 26 and the tapered sleeve 13 are rotatably engaged.

[0047] The traction cable anchoring structure includes an anchor 4, a replaceable traction cable 5, a pressure plate 6, a clamping screw 7, and a clamping piece 8. The anchor 4 is fixed on the pre-embedded part 3 at the traction end. The pressure plate 6 is installed on the anchor 4 through the clamping screw 7. One end of the replaceable traction cable 5 is located between the anchor 4 and the pressure plate 6, and the replaceable traction cable 5 is clamped and fixed between the anchor 4 and the pressure plate 6 by the clamping piece 8.

[0048] The top-and-bottom adjustment support structure includes an upper support cylinder 35, a support plate 36, a lower support cylinder 37, a locking member 38, and a lifting device. The lower end of the upper support cylinder 35 is fitted into the cylinder of the lower support cylinder 37. The support plate 36 is fixedly installed on the upper outer circumference of the upper support cylinder 35. A lifting device is installed between the bottom inner side of the upper support cylinder 35 and the bottom of the lower support cylinder 37. The outer walls of the upper support cylinder 35 and the lower support cylinder 37 are connected and locked together by the locking member 38.

[0049] Multiple upper rectangular tie rods 15 are vertically fixed on the upper support plate 1. The upper rectangular tie rods 15 are welded and fixed to the upper support plate steel bars 21. An upper spherical outer peripheral plate 16 is fixed on the outer edge of the convex spherical panel 12. Multiple mounting holes are evenly opened on the upper spherical outer peripheral plate 16. The lower end of the upper rectangular tie rod 15 passes through the mounting hole and is fixed by a fastening nut 17. An anti-loosening nut 18 is installed on the outside of the fastening nut 17 at the lower end of the upper rectangular tie rod 15.

[0050] The lower support 2 is pre-embedded with a plurality of hook-shaped reinforcing ribs 29 and a lower rectangular tie rod 30 evenly distributed in a ring. The hook-shaped reinforcing ribs 29 are fixed to the bottom of the concave ball panel 23, and the upper end of the lower rectangular tie rod 30 passes through the mounting hole on the concave ball panel 23 and is fixed by an anti-loosening nut.

[0051] A PTFE sleeve 14 is installed on the inner wall of the conical sleeve 13. The PTFE sleeve 14 is located between the conical sleeve 13 and the conical pin 26. There is a gap between the conical sleeve 13 and the PTFE sleeve 14 and it is coated with lubricating oil. There is a certain movable swing angle between the inner wall of the conical sleeve 13 and the PTFE sleeve 14. The swing angle is 1 to 2 degrees. A protective cover 28 is provided at the bottom of the conical pin 26.

[0052] The concave spherical panel 23 has multiple annular grooves of different diameters coaxially arranged on its concave surface. A fan-shaped slide plate 24 is provided on the concave surface of the concave spherical panel 23. The fan-shaped slide plate 24 is fixed to the concave spherical panel 23 by an annular clamping plate 25 installed in the annular groove. The annular clamping plate 25 is fixed by screws. The concave spherical panel 23 and the fan-shaped slide plate 24 are provided with through-hole vibration holes 33 and vent holes 34. Multiple oil guide grooves 31 are provided radially on the fan-shaped slide plate 24. The oil guide grooves 31 are connected to the oil supply device 32 located on the periphery through pipes. An electric oil pump is provided in the oil supply device 32.

[0053] The rolling device includes a rolling limiting plate 39 and a rolling rod 40. The rolling limiting plate 39 is fixedly installed at the bottom of the top adjustment support structure. Multiple rolling rod mounting slots are opened at equal intervals along the annular edge of the rolling limiting plate 39, and a rolling rod 40 is installed in each rolling rod mounting slot.

[0054] A construction method for rotating a structure by adjusting the attitude of the beam at a large inclination angle is characterized by the following steps:

[0055] a. First, install the concave ball joint of the eccentric rotating ball joint device on the lower bearing 2. Adjust the center point and the elevation of the concave ball joint to meet the design requirements before fixing it.

[0056] b. Then clean the dirt on the concave ball panel 23 of the concave ball hinge, polish the surface of the concave ball panel 23 to a glossy state, and apply lubricant to maintain good lubrication;

[0057] c. The convex ball joint is hoisted and placed in the concave surface of the concave ball panel 23. It is adjusted to be coaxially aligned to complete the assembly. Lubricating oil is applied to the mating surfaces of the convex ball panel 12 and the concave ball panel 23 to temporarily fix the concave ball joint and the convex ball joint.

[0058] d. Next, pour the concrete for the lower foundation 2, compact the concrete at the bottom of the concave ball hinge, and then cure the concrete.

[0059] e. Then, a slide rail steel plate 9 is fixedly installed on the upper surface of the lower support platform 2, and a top-drop adjustment support structure is fixedly installed at the bottom of the upper support platform 1, so that the slide rail steel plate 9 is located directly below the bottom of the top-drop adjustment support structure. In addition, a rolling device that provides rolling support is installed at the bottom of the top-drop adjustment support structure.

[0060] f. Weld and fix the anti-tension rib plate 10 to the upper ball hinge circumferential rib plate 11 and the upper bearing plate steel bar 21 to form a stable integral structure with the upper bearing plate 1. Fix the traction end embedded part 3 on the outside of the upper bearing plate 1, and connect and fix one end of the replaceable traction cable 5 on the traction end embedded part 3 through the traction cable anchoring structure.

[0061] g. Finally, pour the concrete for the upper foundation 1, vibrate and compact the concrete at the bottom of the convex ball hinge, and carry out concrete curing to complete the construction of the rotating structure and prepare for the rotation.

[0062] Referring to the accompanying drawings, in order to resist unbalanced moments and solve the technical problem of crossing sudden height obstacles, this invention employs a jacking and adjusting support structure to provide rolling support. It also enables jacking operations within a certain height range. During bridge rotation, the jacking and adjusting support structure provides rolling support, greatly reducing resistance and decreasing the traction force required for rotation. The specific structure is as follows: A ring-shaped sliding steel plate 9 is fixedly installed on the upper surface of the lower bearing platform 2, surrounding the eccentric rotating ball joint device. A jacking and adjusting support structure is fixedly installed at the bottom of the upper bearing platform 1, directly above the sliding steel plate 9. A rolling device is installed at the bottom of the jacking and adjusting support structure, which is supported on the sliding steel plate 9 by the rolling device.

[0063] The adjustable support structure includes an upper support cylinder 35, a support plate 36, a lower support cylinder 37, a locking element 38, and a lifting device. The lower end of the upper support cylinder 35 is fitted into the cylinder of the lower support cylinder 37. The support plate 36 is fixedly installed on the upper outer circumference of the upper support cylinder 35. A lifting device is installed between the bottom inner side of the upper support cylinder 35 and the bottom of the lower support cylinder 37. The lifting device is a hydraulic lifting device. The outer walls of the upper support cylinder 35 and the lower support cylinder 37 are connected and locked together by the locking element 38. After the height of the upper support cylinder 35 and the lower support cylinder 37 is adjusted, the upper support cylinder 35 and the lower support cylinder 37 are locked and fixed by the locking element 38, so that the upper support cylinder 35 and the lower support cylinder 37 are fixed into a whole structure with good stability. When a bridge needs to cross a sudden obstacle during rotation, the beam at one end is lifted by adjusting the support structure, so that the bridge abutment is in a non-operational bridge slope state. This allows for easy vertical lifting of one end of the rotating beam and rotation, thus facilitating the crossing of obstacles without increasing the bridge height or changing the bridge structure, making the bridge construction cost the most economical.

[0064] In addition, the rolling device mainly includes a rolling limiting plate 39 and rolling rods 40. The rolling limiting plate 39 is fixedly installed at the bottom of the top-drop adjustment support structure. Multiple rolling rod mounting slots are equally spaced along the annular edge of the rolling limiting plate 39. Each rolling rod mounting slot contains one rolling rod 40 or multiple coaxial rolling elements, providing strong load-bearing capacity. This method changes the previous friction-dragging structure, using rolling instead of sliding friction to avoid damage to the bridge structure during rotation.

[0065] This invention features an eccentric rotating ball joint device installed between the upper bearing platform 1 and the lower bearing platform 2. This device consists of two main parts: an upper ball joint structure and a lower ball joint structure, which rotate in conjunction with each other. The upper ball joint structure is fixedly located at the bottom of the upper bearing platform 1, and the lower ball joint structure is fixedly located at the top of the lower bearing platform 2. Unlike existing technologies, this invention improves the upper and lower ball joint structures by incorporating anti-pull-out and anti-overturning features, and optimizes and strengthens the connection and fixing methods between the upper and lower bearing platforms 1 and 2. This improves the stress condition of the rotating ball joint device and provides horizontal and vertical constraints on the upper and lower ball joint structures, avoiding the risk of overturning due to unbalanced moments in the bridge. Furthermore, it prevents uneven stress and relative sliding between the upper and lower ball joint structures, thus avoiding localized damage such as cracks in the bridge bearing concrete during bridge rotation.

[0066] The eccentric rotating ball joint device comprises two parts: an upper convex ball joint and a lower concave ball joint. The convex ball joint includes a tensile stiffener 10, an upper ball joint circumferential rib 11, a convex ball face plate 12, a conical sleeve 13, a shear stud 19, a reinforcing bar hole 20, an upper bearing plate reinforcing bar 21, and other auxiliary fixing or connecting parts. The bottom of the upper bearing plate 1 is fixed to the convex ball face plate 12 via the tensile stiffener 10 and the upper ball joint circumferential rib 11. The convex surface of the convex ball face plate 12 faces downwards and has a high surface finish, with a roughness Ra less than or equal to 0.8. The tensile stiffener 10 is radially distributed along the upper surface of the convex ball face plate 12. Multiple tensile stiffeners 10 are symmetrically distributed with the center of the convex ball face plate 12 as the center of symmetry. The upper ball joint circumferential rib 11 consists of multiple metal annular ribs of different diameters, coaxially distributed with respect to the convex ball face plate 12. A rectangular through hole is provided at the intersection of the tension stiffener 10 and the upper ball-joint circumferential rib 11. The rectangular through hole can be made on the tension stiffener 10, and the upper ball-joint circumferential rib 11 can be welded and fixed after passing through the through hole; alternatively, a rectangular through hole can be made on the upper ball-joint circumferential rib 11, and the tension stiffener 10 can be welded and fixed after passing through the through hole. This fixing method can make the tension stiffener 10 and the upper ball-joint circumferential rib 11 form a stable three-dimensional structure, which is a centrally symmetrical structure and can bear and receive forces evenly.

[0067] Multiple upper rectangular tie rods 15 are vertically fixed on the upper bearing platform 1. The upper rectangular tie rods 15 are welded and fixed to the upper bearing platform reinforcing bars 21. An upper spherical outer plate 16 is fixed to the outer edge of the convex spherical panel 12. Multiple mounting holes are evenly opened on the upper spherical outer plate 16. The lower end of the upper rectangular tie rod 15 passes through the mounting hole and is fixed by a fastening nut 17. An anti-loosening nut 18 is installed on the outside of the fastening nut 17 at the lower end of the upper rectangular tie rod 15. The tensile reinforcement plate 10 and the upper spherical hinge circumferential rib plate 11 are respectively provided with transversely distributed reinforcing bar holes 20. The upper bearing platform reinforcing bars 21 are inserted and fixed in the reinforcing bar holes 20. The tensile reinforcement plate 10, the upper spherical hinge circumferential rib plate 11, the upper bearing platform reinforcing bars 21 and the upper bearing platform 1 are formed into a stable integral structure by concrete pouring.

[0068] A tapered sleeve 13 is vertically fixed at the center of the upper surface of the convex spherical panel 12. The upper diameter of the tapered sleeve 13 is larger, while the middle and bottom can be either straight or tapered. The outer diameter of the upper end of the tapered sleeve 13 is larger than the outer diameter of the middle and bottom. The lower end of the tapered pin 26 is a small end, which is locked to the bottom of the concave spherical panel 23 by a pin nut 27. A protective cover 28 is provided at the bottom of the tapered pin 26. The outer wall of the lower small end of the tapered sleeve 13 is fixed to the anti-pull-out rib plate 10, and the tapered sleeve 13 and the anti-pull-out rib plate 10 are fixed as one piece. The outer wall of the upper large end of the tapered sleeve 13 is fixed to the shear nail 19, which further improves the stability of the tapered sleeve 13 after it is fixed.

[0069] The lower ball joint structure mainly includes a concave ball panel 23, a fan-shaped slide plate 24, an annular clamping plate 25, a tapered pin 26, a hook-shaped reinforcing rib 29, a lower rectangular tie rod 30, and other auxiliary fixing or connecting parts. Multiple hook-shaped reinforcing ribs 29 and lower rectangular tie rods 30 are pre-embedded in a ring-shaped even distribution on the lower support 2. The hook-shaped reinforcing ribs 29 are fixed to the bottom of the concave ball panel 23, and the upper end of the lower rectangular tie rod 30 passes through the mounting hole on the concave ball panel 23 and is fixed by an anti-loosening nut. The convex surface of the convex ball panel 12 matches the concave surface of the concave ball panel 23. The concave surface of the concave ball panel 23 has a high smoothness, and the smooth surface can minimize the coefficient of friction. A tapered pin 26 is coaxially fixed at the center of the convex ball panel 12. The lower end of the tapered pin 26 is fixed to the lower support 2. The shape of the tapered pin 26 corresponds to the tapered cavity inside the tapered sleeve 13, and the upper diameter of the tapered pin 26 is also relatively large. The tapered pin 26 is installed inside the tapered sleeve 13, and the tapered pin 26 and the tapered sleeve 13 are rotatably engaged.

[0070] To improve the rotational accuracy between the tapered pin 26 and the tapered sleeve 13 and reduce rotational friction, this invention installs a PTFE sleeve 14 on the inner wall of the tapered sleeve 13. The PTFE sleeve 14 is located between the tapered sleeve 13 and the tapered pin 26. The PTFE material used in the sleeve 14 has self-lubricating properties. Furthermore, a gap is left between the tapered sleeve 13 and the PTFE sleeve 14, and lubricating oil is applied to minimize rotational friction. A certain movable swing angle, 1-2 degrees, exists between the inner wall of the tapered sleeve 13 and the PTFE sleeve 14. This swing angle is designed to accommodate the small-amplitude oscillation of the upper ball joint structure during rotation. The tapered structure of the tapered sleeve 13 and the tapered pin 26 also provides the conditions for setting the swing angle. In actual engineering applications, the swing angle is crucial. Without a swing angle, damage can easily occur between the tapered sleeve 13 and the tapered pin 26 during bridge rotation, potentially affecting normal rotation.

[0071] To avoid the drawbacks of traditional methods where traction steel strands are easily corroded, rusted, or even broken when pre-embedded in the concrete of the upper foundation 1, this invention provides a traction end embedded part 3 fixedly installed on the outside of the upper foundation 1. The traction end embedded part 3 is connected and fixed to one end of a replaceable traction cable 5 via a traction cable anchoring structure, allowing for easy replacement of the traction cable. The traction cable anchoring structure includes an anchor 4, a replaceable traction cable 5, a pressure plate 6, a clamping screw 7, and a clamping piece 8. The anchor 4 is fixed to the traction end embedded part 3, and the pressure plate 6 is installed on the anchor 4 via the clamping screw 7. One end of the replaceable traction cable 5 is located between the anchor 4 and the pressure plate 6, and the replaceable traction cable 5 is clamped and fixed between the anchor 4 and the pressure plate 6 by the clamping piece 8.

[0072] In addition, to reduce friction between the convex spherical panel 12 and the concave spherical panel 23 during rotation, this invention employs a lubrication system. Multiple annular grooves of different diameters are coaxially arranged on the concave surface of the concave spherical panel 23. A fan-shaped slide plate 24 is provided on the concave surface of the concave spherical panel 23. The fan-shaped slide plate 24 is fixed to the concave spherical panel 23 by an annular clamping plate 25 installed within the annular grooves. The annular clamping plate 25 is fixed by screws. After fixing, the upper surface of the fan-shaped slide plate 24 and the upper surface of the annular clamping plate 25 are on the same plane or arc surface. The fan-shaped slide plate 24 is made of non-metallic material. Preferably, the fan-shaped slide plate 24 is made of filled polytetrafluoroethylene, modified ultra-high molecular weight polyethylene, or high-performance polytetrafluoroethylene. Multiple oil guide grooves 31 are radially formed on the fan-shaped slide plate 24. The oil guide grooves 31 are connected to the oil supply device 32 located on the periphery through pipes. An electric oil pump is installed in the oil supply device 32. The electric oil pump provides lubricating oil to the oil guide grooves 31 through the oil supply pipe. The lubricating oil in the oil guide grooves 31 will cover the surface of the fan-shaped slide plate 24 and form a lubricating oil film. This will further reduce the friction coefficient of the convex ball panel 12 when it rotates. The friction coefficient is less than 0.08, which is beneficial to improving the smoothness of the bridge rotation and also reduces the wear of the rotating ball joint device during the rotation process.

[0073] To effectively monitor the bridge rotation process and record data such as stress in the jacking and adjusting support structure, ball joint force, friction, and beam tilt angle throughout the rotation, this invention employs multiple data acquisition systems to collect and gather data on force, load, conical friction, and tilt angle in real time. Specifically, stress sensors are installed on the jacking and adjusting support structure to monitor stress and avoid risks caused by unbalanced moments in the upper beam. A sensor mounting ring, coaxial with the conical pin 26, is provided on the lower outer surface of the pin 26. Multiple vertical load sensors are evenly mounted on this ring, distributed on the central hole support ring surface of the lower ball joint. The force-bearing surface of the vertical load sensors is the concave spherical panel of the upper ball joint, and they are evenly distributed concentrically along the bridge direction with the lower ball joint center as the center. The vertical load sensor is connected to the data acquisition unit outside the lower pier via a data cable and lead pipe. After the data acquisition unit collects the data, it transmits it to the server or other data devices for processing and analysis, realizing real-time data acquisition and monitoring. This provides effective data basis for bridge rotation weighing and can effectively improve the risk prevention and control capabilities of bridge rotation.

[0074] The installation method and usage process of this invention are as follows: First, install the concave ball joint of the eccentric rotating ball joint device on the lower bearing platform 2. Adjust the center point and surrounding elevation of the concave ball joint to meet the design requirements before fixing it. Then, clean the dirt on the concave ball panel 23 of the concave ball joint, polish the surface of the concave ball panel 23 to a glossy state, and apply lubricating oil to maintain good lubrication. Hoist the convex ball joint into the concave surface of the concave ball panel 23, adjust it to coaxial alignment to complete the assembly, and apply lubricating oil to the mating surfaces of the convex ball panel 12 and the concave ball panel 23 to temporarily fix the concave ball joint and the convex ball joint. Next, pour concrete for the lower bearing platform 2, vibrate and compact the concrete at the bottom of the concave ball joint, and perform concrete curing. Then, fix the sliding steel plate 9 on the upper surface of the lower bearing platform 2, and fix the top-drop adjustment support structure at the bottom of the upper bearing platform 1, so that the sliding steel plate 9 is located directly below the bottom of the top-drop adjustment support structure. In addition, install a rolling device to provide rolling support at the bottom of the top-drop adjustment support structure. The tensile reinforcement plate 10 is welded and fixed to the upper ball joint circumferential rib plate 11 and the upper bearing plate reinforcement 21, forming a stable integral structure with the upper bearing plate 1. A traction end embedded part 3 is fixedly installed on the outside of the upper bearing plate 1, and connected and fixed to one end of the replaceable traction cable 5 via a traction cable anchoring structure on the traction end embedded part 3. Finally, the concrete of the upper bearing plate 1 is poured, the concrete at the bottom of the convex ball joint is vibrated to compact it, and concrete curing is carried out, completing the construction of the rotating structure and preparing it for rotation.

[0075] The above description is a further detailed explanation of the present invention in conjunction with specific embodiments. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, any simple modifications and substitutions made without departing from the concept of the present invention should be considered to fall within the protection scope of the present invention.

Claims

1. A beam body large tilt angle attitude adjustment and control rotation structure, comprising an upper support platform (1) and a lower support platform (2), characterized in that: A rotating ball joint device is installed between the upper bearing platform (1) and the lower bearing platform (2). The rotating ball joint device includes a convex ball joint and a concave ball joint. A traction end embedded part (3) is fixedly installed on the outer side of the upper bearing platform (1). The traction end embedded part (3) is connected and fixed to one end of the replaceable traction cable (5) through the traction cable anchoring structure. A slide rail steel plate (9) distributed in a ring is fixedly installed on the upper surface of the lower bearing platform (2) and on the periphery of the rotating ball joint device. A top-drop adjustment support structure is fixedly installed at the bottom of the upper bearing platform (1) directly above the slide rail steel plate (9). A rolling device is installed at the bottom of the top-drop adjustment support structure. The top-drop adjustment support structure is supported on the slide rail steel plate (9) through the rolling device. The rotating ball joint device includes a tension rib plate (10), an upper ball joint circumferential rib plate (11), a convex ball plate (12), a conical sleeve (13), a shear stud (19), a reinforcing bar hole (20), an upper bearing plate reinforcing bar (21), a concave ball plate (23), a fan-shaped slide plate (24), and a conical pin (26). The bottom of the upper bearing plate (1) is fixed with the convex ball plate (12) by the tension rib plate (10) and the upper ball joint circumferential rib plate (11), respectively. The convex surface of the convex ball plate (12) Downward, a conical sleeve (13) is vertically fixed at the center of the upper surface of the convex spherical panel (12). The outer wall of the lower small end of the conical sleeve (13) is fixed to the pull-out reinforcement plate (10), and the outer wall of the upper large end of the conical sleeve (13) is fixed to the shear stud (19). The pull-out reinforcement plate (10) and the upper spherical hinge circumferential rib plate (11) are respectively provided with transversely distributed steel bar holes (20). The upper bearing plate steel bar (21) is inserted and fixed in the steel bar holes (20). The pull-out reinforcement plate (10) The upper ball joint circumferential rib plate (11), the upper bearing plate reinforcement (21), and the upper bearing plate (1) are formed into a stable integral structure by concrete pouring. The lower bearing plate (2) is provided with a concave ball plate (23) that matches the convex surface of the convex ball plate (12). A tapered pin (26) is coaxially fixed at the center of the convex ball plate (12). The lower end of the tapered pin (26) is fixed on the lower bearing plate (2). The tapered pin (26) is installed in the tapered sleeve (13). 6) Rotatably engages with the conical sleeve (13); a PTFE sleeve (14) is installed on the inner wall of the conical sleeve (13), the PTFE sleeve (14) is located between the conical sleeve (13) and the conical pin (26), there is a gap between the conical sleeve (13) and the PTFE sleeve (14) and it is coated with lubricating oil, there is a movable swing angle between the inner wall of the conical sleeve (13) and the PTFE sleeve (14), the swing angle is 1 to 2 degrees, and a protective cover (28) is provided at the bottom of the conical pin (26). The top-and-bottom adjustment support structure includes an upper support cylinder (35), a support plate (36), a lower support cylinder (37), a locking element (38), and a lifting device. The lower end of the upper support cylinder (35) is fitted into the cylinder installed in the lower support cylinder (37). A support plate (36) is fixedly installed on the upper outer circumference of the upper support cylinder (35). A lifting device is installed between the bottom inner side of the upper support cylinder (35) and the bottom of the lower support cylinder (37). The outer walls of the upper support cylinder (35) and the lower support cylinder (37) are connected and locked by the locking element (38). The traction cable anchoring structure includes an anchor (4), a replaceable traction cable (5), a pressure plate (6), a clamping screw (7), and a clamping piece (8). The anchor (4) is fixed on the traction end embedded part (3). The pressure plate (6) is installed on the anchor (4) through the clamping screw (7). One end of the replaceable traction cable (5) is located between the anchor (4) and the pressure plate (6), and the replaceable traction cable (5) is clamped and fixed between the anchor (4) and the pressure plate (6) through the clamping piece (8).

2. The beam body large tilt angle attitude adjustment and control rotation structure according to claim 1, characterized in that: Multiple upper rectangular tie rods (15) are vertically fixed on the upper support (1). The upper rectangular tie rods (15) are welded and fixed to the upper support reinforcement (21). An upper spherical outer plate (16) is fixed on the outer edge of the convex spherical panel (12). Multiple mounting holes are evenly opened on the upper spherical outer plate (16). The lower end of the upper rectangular tie rod (15) passes through the mounting hole and is fixed by a fastening nut (17). An anti-loosening nut (18) is installed on the outside of the fastening nut (17) at the lower end of the upper rectangular tie rod (15).

3. The beam body large tilt angle attitude adjustment and control rotation structure according to claim 1, characterized in that: The lower support (2) is pre-embedded with a plurality of hook-shaped reinforcing ribs (29) and a lower rectangular tie rod (30) evenly distributed in a ring. The hook-shaped reinforcing ribs (29) are fixed to the bottom of the concave ball panel (23), and the upper end of the lower rectangular tie rod (30) passes through the mounting hole on the concave ball panel (23) and is fixed by a lock nut.

4. The beam body large tilt angle attitude adjustment and control rotation structure according to claim 1, characterized in that: The concave spherical panel (23) has multiple annular grooves of different diameters coaxially arranged on its concave surface. A fan-shaped slide plate (24) is provided on the concave surface of the concave spherical panel (23). The fan-shaped slide plate (24) is fixed on the concave spherical panel (23) by an annular clamping plate (25) installed in the annular groove. The annular clamping plate (25) is fixed by screws. The concave spherical panel (23) and the fan-shaped slide plate (24) are provided with through-hole vibration holes (33) and vent holes (34). Multiple oil guide grooves (31) are provided radially on the fan-shaped slide plate (24). The oil guide grooves (31) are connected to the oil supply device (32) located on the periphery through pipes. An electric oil pump is provided in the oil supply device (32).

5. The beam body large tilt angle attitude adjustment and control rotation structure according to claim 1, characterized in that: The rolling device includes a rolling limiting plate (39) and a rolling rod (40). The bottom of the top-drop adjustment support structure is fixedly installed with the rolling limiting plate (39). Multiple rolling rod mounting slots are opened at equal intervals along the annular edge of the rolling limiting plate (39), and a rolling rod (40) is installed in each rolling rod mounting slot.

6. A method for constructing a rotating structure using the beam tilt angle attitude adjustment control method as described in claim 1, characterized in that... Includes the following steps: a. First, install the concave ball hinge of the rotating ball hinge device on the lower bearing platform (2), adjust the center point and the elevation of the concave ball hinge to meet the design requirements, and then fix it. b. Then clean the dirt on the concave ball panel (23) on the concave ball hinge, polish the surface of the concave ball panel (23) to a glossy state, and apply lubricant to maintain good lubrication; c. The convex ball joint is hoisted and placed in the concave surface of the concave ball panel (23). It is adjusted to be coaxially aligned to complete the assembly. Lubricating oil is applied to the mating surfaces of the convex ball panel (12) and the concave ball panel (23) to temporarily fix the concave ball joint and the convex ball joint. d. Next, pour the concrete for the lower foundation (2), compact the concrete at the bottom of the concave ball joint, and then cure the concrete. e. Then, a slide rail steel plate (9) is fixedly installed on the upper surface of the lower support platform (2), and a top-drop adjustment support structure is fixedly installed at the bottom of the upper support platform (1), so that the slide rail steel plate (9) is located directly below the bottom of the top-drop adjustment support structure. In addition, a rolling device that provides rolling support is installed at the bottom of the top-drop adjustment support structure. f. Weld and fix the anti-tension rib plate (10) to the upper ball hinge circumferential rib plate (11) and the upper bearing plate reinforcement (21) to form a stable overall structure with the upper bearing plate (1). Fix the traction end embedded part (3) on the outside of the upper bearing plate (1) and connect and fix one end of the replaceable traction cable (5) on the traction end embedded part (3) through the traction cable anchoring structure. g. Finally, pour the concrete of the upper foundation (1), vibrate and compact the concrete at the bottom of the convex ball hinge, and carry out concrete curing to complete the construction of the rotating structure and prepare for the rotation.

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