Swivel device for steel box girder pier top swivel

Abstract

The utility model provides a swivel device for steel box girder pier top swivel, which relates to the technical field of bridge construction, and comprises a pier cross beam, a turntable structure, a steel box girder and a swivel support structure, the turntable structure is a cylinder, the turntable structure is provided with a radial plate and at least two annular plates, the radial plate and the annular plates are arranged on the turntable structure, and the swivel support structure is arranged on the steel box girder. Each annular plate is arranged to be annular, the circle center of each annular plate is the same as the circle center of the rotary disc structure, the radial plates are connected to the inner side wall of the rotary disc structure from the outer side wall, closest to the center point of the cylinder, of the annular plate, and the steel box girder is arranged over the rotary disc structure. The lower bottom surface of the steel box girder is fixedly connected with the upper top surface of the turntable structure; and the upper top surface of the rotating body supporting structure is connected with the rotating body supporting structure. Through the optimization of the structure, the complexity of manual operation is reduced, the construction efficiency is improved, and meanwhile, the service life of the device is also prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, more particularly, relate to a kind of swivel device for steel box girder pier top swivel. BACKGROUND

[0002] Traditional bridge swivel construction usually adopts pier bottom swivel, and swivel system is closed in pile cap after swivel in place.Pier top swivel is provided with ball hinge between pier top and beam bottom, and pier top swivel has the advantage of light swivel weight.In existing bridge construction, pier top swivel technology is widely used, and swivel device is arranged at beam bottom, wherein supporting foot, upper turntable and traction cable can be embedded in beam bottom.But the existing swivel device is generally only applicable to concrete beam, unlike cast-in-place construction of concrete bridge, steel box girder construction mode is mostly used to splice to form a whole after factory processing, therefore, the existing rotating device is not applicable to steel box girder pier top swivel construction.

[0003] Therefore, there is an urgent need for a swivel device for steel box girder pier top swivel to solve the problem that the existing rotating device is not applicable to steel box girder pier top swivel construction. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of swivel device for steel box girder pier top swivel to improve the problem described above.In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

[0005] The present application provides a kind of swivel device for steel box girder pier top swivel, including: bridge pier beam, turntable structure, steel box girder and swivel support structure, the turntable structure is set as cylinder, the turntable structure is provided with radial plate and annular plate, the annular plate is provided with at least two, each the annular plate is set as annular, the center of all the annular plate is same with the center of the turntable structure, the radial plate is connected to the inner side wall of turntable structure from the outer side wall of the nearest annular plate to the center point of cylinder, all radial plate is set to divide the turntable structure, each the radial plate and annular plate are connected by welding at the junction, the lower bottom surface of the annular plate and the radial plate is connected by welding with the turntable structure;The steel box girder is set in the upper of the turntable structure, and the lower bottom surface of the steel box girder is fixedly connected with the upper top surface of the turntable structure;The upper top surface of the swivel support structure is connected with the turntable structure, and the lower bottom surface of the swivel support structure is connected with the bridge pier beam.

[0006] Optionally, the swivel support structure comprises a swivel support base and support legs, the support legs are provided with at least four, the upper top surface of each support leg is fixedly connected with the rotating disc structure, the lower bottom surface of each support leg is connected with the pier beam, the swivel support base is arranged directly below the center point of the rotating disc structure, the swivel support base is arranged between the rotating disc structure and the pier beam, the upper top surface of the swivel support base is fixedly connected with the rotating disc structure, and the lower bottom surface of the swivel support base is fixedly connected with the pier beam.

[0007] Optionally, the bottom of the rotating disc structure is provided with a bottom sealing plate, the upper top surface of the bottom sealing plate is fixedly connected with the radial plate and the annular plate respectively, and the lower bottom surface of the bottom sealing plate is fixedly connected with the rotating disc structure.

[0008] Optionally, the bottom sealing plate is provided with support leg anchoring steel bars, and the support leg anchoring steel bars fixedly connect the bottom sealing plate and the support legs.

[0009] Optionally, the steel box girder is provided with swivel support base anchor bolts, and the swivel support base anchor bolts pass through the rotating disc structure to fixedly connect the upper top surfaces of the steel box girder and the swivel support base.

[0010] Optionally, the steel box girder is further provided with swivel support base anchoring steel bars, the swivel support base anchoring steel bars are arranged in a C-shaped form, the swivel support base anchoring steel bars are provided with at least two groups, each group of swivel support base anchoring steel bars is provided with at least four, and each swivel support base anchoring steel bar is fixedly arranged on the corresponding swivel support base anchor bolt.

[0011] Optionally, the steel box girder and the rotating disc structure are both provided with self-compacting concrete, and the self-compacting concrete fixedly connects the steel box girder and the rotating disc structure.

[0012] Optionally, the rotating disc structure is provided with a rotating traction cable, one end of the rotating traction cable is fixedly arranged on the self-compacting concrete in the rotating disc structure, and the other end of the rotating traction cable is arranged to pass through the side wall of the rotating disc structure and be connected with the outside.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model introduces the improved rotating disc structure and combines with the self-compacting concrete, improves the bearing capacity and rotation stability of the overall structure, avoids the structural deformation problem caused by uneven stress. In addition, the multi-level structure design of the annular plate and the radial plate effectively disperses the weight of the steel box girder and ensures uniform stress in the rotation process. The utility model optimizes the structure, reduces the complexity of manual operation, improves the construction efficiency, prolongs the service life of the device, and has the advantages of simple structure, convenient operation and the like.

[0015] The other features and advantages of the present application will be described in the following description, and become apparent from the description, or can be learned from the practice of the present application. The objectives and other advantages of the present application can be achieved and obtained by the structure particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 A front view of a turntable device for a steel box girder pier top turntable according to the present application;

[0018] Figure 2 A perspective view of a turntable device for a steel box girder pier top turntable according to the present application;

[0019] Figure 3 A sectional view of a turntable device for a steel box girder pier top turntable according to the present application;

[0020] Figure 4 A zoomed-in view of position A in FIG. Figure 3 A zoomed-in view of position B in FIG.

[0021] Figure 5 A zoomed-in view of position C in FIG. Figure 3 A zoomed-in view of position D in FIG.

[0022] Markings in the figure: 1, bridge pier beam; 2, radial plate; 3, ring plate; 4, steel box girder; 5, turntable support; 6, support leg; 7, bottom sealing plate; 8, support leg anchoring steel bar; 9, turntable support anchor bolt; 10, turntable support anchoring steel bar; 11, self-compacting concrete; 12, rotating traction cable. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0024] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the utility model, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0025] As Figure 1 shown, the embodiments provide a rotating body device for steel box girder pier top rotating body, which comprises a bridge pier beam 1, a rotating disc structure, a steel box girder 4 and a rotating body support structure, the rotating disc structure is provided as a cylinder, the rotating disc structure is provided with radial plates 2 and annular plates 3, the annular plates 3 are provided with at least two, each of the annular plates 3 is provided as an annular plate, the centers of all the annular plates 3 are the same as the center of the rotating disc structure, the radial plates 2 are connected from the outer side wall of the closest annular plate 3 to the inner side wall of the rotating disc structure, all the radial plates 2 divide the rotating disc structure, each of the radial plates 2 is connected with the annular plate 3 at the connecting position by welding, the lower bottom surfaces of the annular plates 3 and the radial plates 2 are connected with the rotating disc structure by welding; the steel box girder 4 is arranged above the rotating disc structure, the lower bottom surface of the steel box girder 4 is fixedly connected with the upper top surface of the rotating disc structure; the upper top surface of the rotating body support structure is connected with the rotating disc structure, and the lower bottom surface of the rotating body support structure is connected with the bridge pier beam 1.

[0026] It can be understood that the utility model discloses a cylindrical turntable structure, which is provided with radial plates 2 and annular plates 3. The design of this structure can ensure the mechanical stability and rotation stability of the whole. The annular plates 3 are at least two and are all annular. The centers of all annular plates 3 coincide with the center of the cylindrical body, which ensures the uniformity of stress distribution and the symmetry of the structure during the whole rotation. The radial plates 2 are connected to the inner side wall of the turntable structure from the outer side wall of the annular plates 3. The radial plates 2 divide the turntable structure, so that the whole turntable structure obtains more uniform support. This design is crucial for the rotation construction of large steel box girders, because it can effectively disperse the weight of the girder and the torque generated during rotation, avoiding the structural instability caused by local stress concentration. The connection between each radial plate 2 and annular plate 3 is by welding, making the connection more stable, and the distribution of welding points further enhances the overall rigidity of the turntable structure. This welding design is particularly important in the application of heavy steel structures, especially in high-strength construction environments, and can resist deformation or damage caused by uneven load or accidental torsion. The steel box girder 4 is arranged directly above the turntable structure, and its lower bottom surface is tightly connected to the upper top surface of the turntable structure by welding or other fixing methods. This vertical connection not only improves the rotation accuracy, but also avoids lateral sliding and instability of the girder during rotation. It also improves the stability and torsional resistance performance during the rotation construction of the steel box girder, providing an important guarantee for subsequent construction accuracy and safety.

[0027] The turntable support structure includes a turntable support 5 and support legs 6. Each support leg 6 is fixedly connected to the upper top surface of the turntable structure, and the lower bottom surface of each support leg 6 is connected to the pier beam 1. The support legs 6 are arranged on the pier beam 1 along the side wall of the turntable structure. The turntable support 5 is arranged directly below the center point of the turntable structure and is arranged between the turntable structure and the pier beam 1. The upper top surface of the turntable support 5 is fixedly connected to the turntable structure, and the lower bottom surface of the turntable support 5 is fixedly connected to the pier beam 1.

[0028] It can be understood that the multi-point support structure formed by the support legs 6 and the turntable support 5 can significantly improve the overall stability of the device, especially during the rotation of the steel box girder 4. They can effectively disperse the huge pressure generated during rotation and prevent damage caused by excessive local stress. At the same time, the support legs 6 and the turntable support 5 can provide uniform support force in all directions, so that the whole device can remain balanced and stable when bearing multi-directional load. In addition, the design of the turntable support 5 at the center point further enhances the load-bearing capacity of the structure and effectively avoids the deviation or inclination caused by unstable center of gravity.

[0029] The bottom of the rotating disc structure is provided with a bottom sealing plate 7, the upper top surface of the bottom sealing plate 7 is fixedly connected with the radial plate 2 and the annular plate 3 respectively, and the lower bottom surface of the bottom sealing plate 7 is fixedly connected with the rotating disc structure.

[0030] It can be understood that the firm connection of the bottom sealing plate 7 with the radial plate 2 and the annular plate 3 in the utility model makes the whole rotating disc structure better resist various stresses generated in the rotating process of the steel box girder 4, and ensures the stability and safety of the structure. Secondly, the closed design of the bottom sealing plate 7 reduces the influence of the external environment on the internal structure, especially for the engineering structure exposed to the natural environment for a long time, this design can effectively prolong the service life and reduce the maintenance cost. At the same time, the bottom sealing plate 7 tightly fixes the rotating disc structure and the rotating body device, further enhances the overall carrying capacity of the rotating disc structure, and makes it stable under high load and complex stress conditions.

[0031] The bottom sealing plate 7 is fixedly connected with the supporting leg 6 through the supporting leg anchoring steel bars 8 arranged on the bottom sealing plate 7.

[0032] It can be understood that the supporting leg anchoring steel bars 8 in the utility model can bear greater tensile stress and shear stress, and ensure that the bottom sealing plate 7 and the supporting leg 6 will not separate or loosen under high load conditions. Secondly, this reinforcing design makes the whole rotating disc structure more stable during the rotating body process, avoids the displacement or rotating deviation caused by the unfirm connection of the structure, and thus guarantees the accuracy and safety of the whole rotating body device. In addition, the arrangement of the supporting leg anchoring steel bars 8 makes the whole structure have better fatigue resistance, can cope with long-term and high-frequency stress changes, and prolongs the service life of the device.

[0033] The upper top surface of the steel box girder 4 and the rotating body support 5 is fixedly connected through the rotating body support anchor bolt 9 arranged on the steel box girder 4.

[0034] It can be understood that the rotating body support anchor bolt 9 in the utility model ensures the firm connection between the steel box girder 4 and the rotating body support 5, thereby improving the stability and reliability of the whole structure.

[0035] The rotating body support anchoring steel bars 10 are arranged on the steel box girder 4, the rotating body support anchoring steel bars 10 are arranged in a C shape, at least two groups of rotating body support anchoring steel bars 10 are arranged, at least four rotating body support anchoring steel bars 10 are arranged in each group, and each rotating body support anchoring steel bar 10 is fixedly arranged on the corresponding rotating body support anchor bolt 9.

[0036] It can be understood that the utility model discloses, the joining of the rotation body support anchoring steel bar 10 provides additional structural support between the steel box girder 4 and the rotation body support 5, significantly improves the mechanical properties of the connecting point, and ensures that the stress distribution of each part is uniform during the rotation process.Especially under long-term, repetitive loading, this enhanced structure can effectively reduce the risk of fatigue failure and prolong the service life of the entire system.

[0037] The steel box girder 4 and the rotation disc structure are both provided with self-compacting concrete 11.

[0038] It can be understood that the application of the self-compacting concrete 11 makes the connection between the steel box girder 4 and the rotation disc structure more compact and stable, significantly improving the shear, tensile and bending resistance of the entire structure.Furthermore, it can effectively disperse the load borne by the rotation disc structure during rotation, ensure uniform stress distribution between parts, and reduce the possibility of local failure.

[0039] The rotation disc structure is provided with a rotation traction cable 12, one end of the rotation traction cable 12 is fixedly arranged on the self-compacting concrete 11 in the rotation disc structure, and the other end of the rotation traction cable 12 is arranged to pass through the side wall of the rotation disc structure and be connected with the outside.

[0040] It can be understood that the application of the rotation traction cable 12 enhances the dynamic response capability of the rotation disc structure, ensuring that the structure can operate efficiently and stably in a complex environment.

[0041] In the description of the utility model, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second", "third" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0042] In the description of the utility model, it should also be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection" and "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be connected inside two elements.The specific meaning of the terms in the utility model can be understood according to the specific circumstances by those skilled in the art.

[0043] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0044] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotating device for rotating a steel box girder pier top, characterized by: Bridge pier beam (1); A turntable structure, wherein the turntable structure is configured as a cylinder, and radial plates (2) and annular plates (3) are provided on the turntable structure, and at least two annular plates (3) are provided, each of the annular plates (3) is configured as annular, and the centers of all the annular plates (3) are the same as the center of the turntable structure, and the radial plates (2) are connected to the inner side wall of the turntable structure from the outer side wall of the annular plate (3) closest to the center point of the cylinder, and all the radial plates (2) divide the turntable structure into equal parts, and each of the radial plates (2) is welded to the annular plate (3) at the connection point, and the lower bottom surfaces of the annular plate (3) and the radial plates (2) are welded to the turntable structure; A steel box girder (4), wherein the steel box girder (4) is arranged directly above the turntable structure, and the lower bottom surface of the steel box girder (4) is fixedly connected to the upper top surface of the turntable structure; A swivel support structure, wherein the upper surface of the swivel support structure is connected to the turntable structure, and the lower surface of the swivel support structure is connected to the bridge pier crossbeam (1).

2. The rotating device for rotating the top of a steel box girder according to claim 1, characterized in that: The swivel support structure includes a swivel support (5) and a support leg (6), at least four of the support legs (6) are provided, the upper top surface of each support leg (6) is fixedly connected to the turntable structure, the lower bottom surface of each support leg (6) is connected to the bridge pier beam (1), the support legs (6) are circumferentially arranged on the bridge pier beam (1) along the side wall of the turntable structure, the swivel support (5) is arranged directly below the center point of the turntable structure, the swivel support (5) is arranged between the turntable structure and the bridge pier beam (1), the upper top surface of the swivel support (5) is fixedly connected to the turntable structure, and the lower bottom surface of the swivel support (5) is fixedly connected to the bridge pier beam (1).

3. The rotating device for rotating the top of a steel box girder according to claim 2, characterized in that: A bottom sealing plate (7) is provided at the bottom of the turntable structure, the upper top surface of the bottom sealing plate (7) is fixedly connected to the radial plate (2) and the annular plate (3), respectively, and the lower bottom surface of the bottom sealing plate (7) is fixedly connected to the turntable structure.

4. The rotating device for rotating the top of a steel box girder according to claim 3, characterized in that: The bottom sealing plate (7) is provided with a support foot anchoring steel bar (8), and the support foot anchoring steel bar (8) fixes the bottom sealing plate (7) and the support foot (6) together.

5. The rotating device for rotating the top of a steel box girder according to claim 1, characterized in that: The steel box girder (4) is provided with a swivel support anchor bolt (9), and the swivel support anchor bolt (9) passes through the turntable structure to fix the steel box girder (4) and the upper top surface of the swivel support (5) in connection.

6. The rotating device for rotating the top of a steel box girder according to claim 5, characterized in that: The steel box girder (4) is also provided with a swivel support anchoring steel bar (10), the swivel support anchoring steel bar (10) is arranged in a C shape, at least two groups of the swivel support anchoring steel bars (10) are provided, each group of swivel support anchoring steel bars (10) is provided with at least four swivel support anchoring steel bars (10), and each swivel support anchoring steel bar (10) is fixedly arranged on its corresponding swivel support anchor bolt (9).

7. The rotating device for rotating the top of a steel box girder according to claim 1, characterized in that: Self-compacting concrete (11) is provided on both the steel box beam (4) and the turntable structure.

8. The rotating device for rotating the top of a steel box girder according to claim 7, characterized in that: A rotating traction rope (12) is provided in the turntable structure, one end of the rotating traction rope (12) is fixedly provided on the self-compacting concrete (11) in the turntable structure, and the other end of the rotating traction rope (12) is provided through the side wall of the turntable structure and connected to the outside.

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