Asymmetric T-structure bridge swivel structure

Abstract

The utility model discloses an asymmetric T-shaped bridge swivel structure which comprises a spherical hinge pile foundation, a spherical hinge lower bearing platform, a horizontal rotating spherical hinge, a spherical hinge upper bearing platform and a spherical hinge pier column which are located below the junction of a T-shaped bridge and sequentially arranged from bottom to top. The junction pier pile foundation, the junction pier pile bearing platform, the junction pier column and the junction pier support are located below the end of the long-arm side main beam of the T-shaped bridge and are sequentially arranged from bottom to top. The balance weight assembly is located on a short arm side main beam of the T-shaped bridge, and the upper ends of the multiple swivel supporting feet are fixedly arranged in the upper bearing platform at the spherical hinge; the bottom end of the end, close to the junction pier support, of the T-shaped bridge long arm side main beam is higher than the top end of the junction pier support. On one hand, a closure section is not arranged any more, the long-arm side main beam of the T-shaped bridge directly falls on the junction pier support by means of the self weight, and the construction period and investment are saved; and on the other hand, the balance weight assembly is arranged on the main beam on the short arm side of the T-shaped structure bridge, so that the moment balance in the rotating process is ensured.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to an asymmetric T-shaped bridge rotation structure. Background Art

[0002] Currently, when building bridges over rivers, railways, highways, and water channels with special functional protections, the property management authorities generally require that no piers be built within a certain protected area, nor that construction be carried out for extended periods above the cleared area. Within the protected area, only the bridge's projection remains, virtually guaranteeing that the bridge must span the protected area in a single span. There are also special requirements for construction techniques. In the past, single-span bridges across protected areas typically employed arch bridge designs. When rotational construction is required, the bridge typically adopts a continuous beam bridge with a counterweight span, a continuous rigid frame bridge, a twin-tower cable-stayed bridge, a T-shaped bridge with symmetry about the piers and towers, or a single-tower cable-stayed bridge structure.

[0003] The structural diagram of the existing rotating bridge is as follows: Figure 9 As shown, both sides of the horizontal spherical joint need to be provided with connecting piers 1', and a separate closing section needs to be provided, which results in a large amount of engineering construction and increases the construction cost.

[0004] Therefore, it is urgent to propose a new solution to solve the above problems. Summary of the Invention

[0005] The utility model provides an asymmetric T-shaped bridge rotation structure to solve the problem in the prior art that both sides of the horizontal rotating ball joint need to be provided with connecting piers and a separate closing section needs to be provided, which leads to a large amount of engineering construction and increases construction costs.

[0006] The utility model provides an asymmetric T-shaped bridge rotation structure, comprising a ball joint pile foundation, a ball joint lower bearing platform, a horizontal spherical joint, a ball joint upper bearing platform and a ball joint pier column located below the intersection of the T-shaped bridge and arranged in sequence from bottom to top, and a junction pier pile foundation, a junction pier pile bearing platform, a junction pier pier column and a junction pier support located below the end of the main beam on the long arm side of the T-shaped bridge and arranged in sequence from bottom to top;

[0007] It also includes a counterweight assembly located on the short arm side main beam of the T-girder bridge, and the counterweight assembly is used to ensure the moment balance between the short arm side main beam of the T-girder bridge and the long arm side main beam of the T-girder bridge on both sides of the T-girder bridge junction;

[0008] A plurality of swivel support legs are arranged between the lower support platform at the spherical joint and the upper support platform at the spherical joint. The upper ends of the swivel support legs are fixedly arranged in the upper support platform at the spherical joint. Under normal rotation conditions, the swivel support legs do not contact the lower support platform at the spherical joint.

[0009] The height of the bottom end of the long arm side main beam of the T-shaped bridge close to one end of the junction pier support is higher than the height of the top end of the junction pier support.

[0010] Furthermore, the counterweight assembly includes a beam top counterweight and a beam inner counterweight. The beam top counterweight is arranged on the beam top of the main beam on the short arm side of the T-girder bridge, and the beam inner counterweight is arranged inside the main beam on the short arm side of the T-girder bridge.

[0011] Furthermore, a plurality of the swivel support legs are arranged at equal angles along the circumferential direction of the flat-rotating ball joint.

[0012] Furthermore, the swivel structure also includes a ball joint sealing support platform arranged between the lower support platform at the ball joint and the upper support platform at the ball joint. The ball joint sealing support platform is made of concrete and is used to cast the lower support platform at the ball joint and the upper support platform at the ball joint into a whole. The swivel support legs and the flat ball joint are buried in the ball joint sealing support platform.

[0013] Furthermore, the upper bearing platform at the spherical joint and the boundary pier column are both provided with a protective structure and an isolation structure on the side close to the spanned structure.

[0014] Furthermore, the main beam on the long arm side of the T-shaped bridge includes at least one cavity, and the counterweights in the beam are evenly arranged in the cavity.

[0015] Furthermore, a traction mechanism for providing rotational power for the T-shaped bridge is provided on the flat-rotating ball joint.

[0016] Furthermore, the height of the bottom end of the long arm side main beam of the T-structure bridge close to one end of the junction pier support is 4 to 8 cm greater than the height of the top end of the junction pier support.

[0017] Furthermore, under normal rotation conditions, the lower end of the swivel support leg is 2 to 3 cm away from the upper surface of the lower support platform at the ball joint.

[0018] Compared with the existing technology, the present invention, on the one hand, no longer sets up a joint section, and directly uses the deadweight of the main beam on the long arm side of the T-structure bridge to fall on the junction pier support, saving construction time and investment; on the other hand, by setting a counterweight assembly on the main beam on the short arm side of the T-structure bridge, the torque balance during the rotation process is ensured, so that only the junction pier needs to be set on one side of the horizontal spherical joint, and the counterweight assembly can be recycled and reused after disassembly, further reducing investment costs and saving construction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the front view of the asymmetric T-shaped bridge rotating structure of the utility model;

[0020] Figure 2 for Figure 1 A in the middle is an enlarged schematic diagram;

[0021] Figure 3Schematic diagram of moment balance of the asymmetric T-shaped bridge swivel structure of the utility model;

[0022] Figure 4 This is a top view of the asymmetric T-shaped bridge rotating structure of the utility model;

[0023] Figure 5 This is a top view dynamic process diagram of the asymmetric T-shaped bridge rotation structure of the utility model;

[0024] Figure 6 This is the cross-section form of the single-box double-chamber main beam of the asymmetric T-shaped bridge rotation structure of the utility model;

[0025] Figure 7 This is the double-box double-chamber main beam cross-section form of the asymmetric T-shaped bridge rotation structure of the utility model;

[0026] Figure 8 This is the cross-section form of the single-box three-chamber main beam of the asymmetric T-shaped bridge rotation structure of the utility model;

[0027] Figure 9 This is a schematic diagram of the rotation structure of an existing T-shaped bridge;

[0028] Figure numerals: 1', junction pier; 11, pile foundation at spherical joint; 12, lower pedestal at spherical joint; 13, horizontal spherical joint; 14, upper pedestal at spherical joint; 15, pier column at spherical joint; 16, support leg for rotation; 17, traction mechanism; 18, spherical joint sealing pedestal; 21, junction pier pile foundation; 22, junction pier pile pedestal; 23, junction pier pier column; 24, junction pier support; 31, T-shaped bridge junction; 32, main beam on the long arm side of T-shaped bridge; 33, main beam on the short arm side of T-shaped bridge; 4, counterweight assembly; 41, beam top counterweight; 42, beam internal counterweight; 51, enclosure structure; 52, isolation structure. DETAILED DESCRIPTION

[0029] In order to further understand the content, features and effects of the present invention, the following examples are given in conjunction with the attached Figures 1 to 8 Detailed instructions are as follows.

[0030] like Figures 1 to 8 The present invention provides an asymmetric T-shaped bridge rotation structure, comprising a spherical hinge pile foundation 11, a spherical hinge lower bearing platform 12, a horizontal spherical hinge 13, a spherical hinge upper bearing platform 14, and a spherical hinge pier 15, which are located below the junction 31 of the T-shaped bridge and are arranged in sequence from bottom to top; and a junction pier pile foundation 21, a junction pier pile bearing platform 22, a junction pier pier column 23, and a junction pier support 24, which are located below the end of the long arm side main beam 32 of the T-shaped bridge and are arranged in sequence from bottom to top.

[0031] The structure also includes a counterweight assembly 4 located on the short arm side main beam 33 of the T-girder bridge. The counterweight assembly 4 is used to ensure moment balance between the short arm side main beam 33 of the T-girder bridge and the long arm side main beam 32 of the T-girder bridge on both sides of the T-girder bridge junction 31. The long arm side main beam 32 of the T-girder bridge and the short arm side main beam 33 of the T-girder bridge are cast in sequence using full-span supports.

[0032] The weight of the long-arm side main beam 32 of the T-bridge is greater than the weight of the short-arm side main beam 33 of the T-bridge. The side projection shape of the long-arm side main beam 32 of the T-bridge is approximately a right-angled trapezoid, and the side projection shape of the short-arm side main beam 33 of the T-bridge is a rectangle. The height of the intersection of the two is the same. The T-bridge intersection 31 is located at the bottom end of the short-arm side main beam 33 of the T-bridge close to the long-arm side main beam 32 of the T-bridge.

[0033] A plurality of swivel supports 16 are provided between the lower support platform 12 and the upper support platform 14 at the spherical joint. The upper ends of the swivel supports 16 are fixedly provided in the upper support platform 14 at the spherical joint. Under normal rotation conditions, the swivel supports 16 do not contact the lower support platform 12 at the spherical joint, thereby ensuring normal rotation.

[0034] The height of the bottom end of the long arm side main beam 32 of the T-shaped bridge close to one end of the junction pier support 24 is higher than the height of the top end of the junction pier support 24.

[0035] On the one hand, the utility model no longer needs to set up a joint section, and directly uses the deadweight of the main beam on the long arm side of the T-structure bridge to fall on the intersection pier support, saving construction time and investment; on the other hand, by setting a counterweight assembly on the main beam on the short arm side of the T-structure bridge, the torque balance during the rotation process is guaranteed, so that only the intersection pier needs to be set on one side of the horizontal spherical joint, and the counterweight assembly block can be recycled and reused after disassembly, further reducing investment costs and saving construction time.

[0036] In this embodiment, Figure 1 As shown, the counterweight assembly 4 includes a top counterweight 41 and an inner counterweight 42. The top counterweight 41 is installed on the top of the main beam 33 on the short arm side of the T-girder bridge, and the inner counterweight 42 is installed inside the main beam 33 on the short arm side of the T-girder bridge. By distributing the top counterweight 41 and the inner counterweight 42, the space of the main beam 33 on the short arm side of the T-girder bridge is more fully utilized.

[0037] In this embodiment, Figure 4As shown, the above-mentioned counterweight assembly must satisfy the following balance formula G11×A11+G12×A12+G13×A13=G2×A2, wherein G11 is the deadweight of the main beam 33 on the short arm side of the T-frame bridge, A11 is the distance from the center of gravity of the main beam 33 on the short arm side of the T-frame bridge to the center of the pier 15 at the spherical joint, G2 is the deadweight of the main beam 32 on the long arm side of the T-frame bridge, A2 is the distance from the center of gravity of the main beam 32 on the long arm side of the T-frame bridge to the center of the pier 15 at the spherical joint, Gl2 is the weight of the counterweight 42 in the beam, Al2 is the distance from the center of gravity of the counterweight 42 in the beam to the center of the pier 15 at the spherical joint, Gl3 is the weight of the counterweight 41 on the top of the beam, and Al3 is the distance from the center of gravity of the counterweight 41 on the top of the beam to the center of the pier 15 at the spherical joint.

[0038] In this embodiment, Figure 4 As shown, the six swivel legs 16 are arranged at equal angles along the circumferential direction of the flat spherical joint 13 to ensure overall stability. The number of swivel legs 16 can also use other values.

[0039] In this embodiment, Figure 1 and 2 As shown, the swivel structure also includes a ball joint sealing platform 18 arranged between the lower platform 12 at the ball joint and the upper platform 14 at the ball joint. The ball joint sealing platform 18 is made of concrete and is used to cast the lower platform 12 at the ball joint and the upper platform 14 at the ball joint into a whole. The swivel support leg 16 and the flat ball joint 13 are buried in the ball joint sealing platform 18.

[0040] In this embodiment, Figure 1 As shown, the upper support platform 14 at the spherical joint and the junction pier column 23 are both provided with a protective structure 51 and an isolation structure 52 on the side close to the spanned structure, thereby protecting the spanned structure.

[0041] In this embodiment, Figures 6-8 As shown, the cross-section forms of a single box with two chambers, a double box with two chambers and a single box with three chambers are respectively given, and the counterweights 42 in the beam are evenly arranged in the caverns, so that it can adapt to T-structured bridges of different shapes.

[0042] In this embodiment, Figure 4 As shown, a traction mechanism 17 for providing power for the rotation of the T-bridge is provided on the horizontal spherical joint 13. The traction mechanism 17 can be a hydraulic traction machine to realize the rotation of the long arm side main beam 32 of the T-bridge and the short arm side main beam 33 of the T-bridge.

[0043] In this embodiment, the height of the bottom end of the long arm side main beam 32 of the T-structure bridge near the junction pier support 24 is 4 to 8 cm greater than the height of the top end of the junction pier support 24. A certain gap is reserved to facilitate assembly. In addition, after the counterweight assembly is removed, the long arm side main beam 32 of the T-structure bridge uses gravity to fall directly on the junction pier column 23.

[0044] In this embodiment, under normal rotation conditions, the lower end of the swivel support leg 16 is 2 to 3 cm away from the upper surface of the lower support platform 12 at the ball joint, ensuring normal rotation. When an unbalanced load occurs, the upper support platform 14 at the ball joint tilts to one side, causing one or more of the swivel support legs 16 to abut against the lower support platform 12 at the ball joint, causing the entire body to stop rotating; after the influence of the unbalanced load is eliminated, the swivel support leg 16 is no longer in contact with the lower support platform 12 at the ball joint, and normal rotation continues.

[0045] The above-described utility model merely expresses the implementation methods of the embodiments of the utility model and should not be construed as limiting the scope of the utility model patent, nor does it impose any formal limitation on the structure of the embodiments of the utility model. It should be noted that a person skilled in the art can make a number of changes and improvements without departing from the concept of the embodiments of the utility model, and these are all within the scope of protection of the embodiments of the utility model.

Claims

1. An asymmetric T-bridge rotating structure, characterized by: The invention comprises a ball joint pile foundation (11), a ball joint lower bearing platform (12), a horizontal ball joint (13), a ball joint upper bearing platform (14) and a ball joint pier column (15) located below the junction (31) of the T-structure bridge and arranged in sequence from bottom to top, and a junction pier pile foundation (21), a junction pier pile bearing platform (22), a junction pier column (23) and a junction pier support (24) located below the end of the long arm side main beam (32) of the T-structure bridge and arranged in sequence from bottom to top; The invention also includes a counterweight assembly (4) located on the short arm side main beam (33) of the T-shaped bridge, wherein the counterweight assembly (4) is used to ensure the moment balance of the short arm side main beam (33) of the T-shaped bridge and the long arm side main beam (32) of the T-shaped bridge on both sides of the T-shaped bridge junction (31); A plurality of swivel support legs (16) are arranged at intervals between the lower support platform (12) at the spherical joint and the upper support platform (14) at the spherical joint. The upper ends of the swivel support legs (16) are fixedly arranged in the upper support platform (14) at the spherical joint. Under normal rotation conditions, the swivel support legs (16) do not contact the lower support platform (12) at the spherical joint. The height of the bottom end of the long arm side main beam (32) of the T-shaped bridge close to one end of the junction pier support (24) is higher than the height of the top end of the junction pier support (24).

2. The asymmetric T-bridge rotating structure according to claim 1, characterized in that: The counterweight assembly (4) comprises a beam top counterweight (41) and a beam inner counterweight (42), wherein the beam top counterweight (41) is arranged on the beam top of the main beam (33) on the short arm side of the T-shaped bridge, and the beam inner counterweight (42) is arranged inside the main beam (33) on the short arm side of the T-shaped bridge.

3. The asymmetric T-bridge rotating structure according to claim 1, characterized in that: The plurality of rotating support legs (16) are arranged at equal angles along the circumferential direction of the flat rotating ball joint (13).

4. The asymmetric T-bridge rotating structure according to claim 3, characterized in that: The swivel structure also includes a ball joint sealing support (18) arranged between the lower support (12) at the ball joint and the upper support (14) at the ball joint. The lower support (12) at the ball joint and the upper support (14) at the ball joint are integrally connected through the ball joint sealing support (18). The swivel support leg (16) and the parallel swivel ball joint (13) are embedded in the ball joint sealing support (18).

5. The asymmetric T-bridge rotating structure according to claim 1, characterized in that: The upper support platform (14) at the spherical joint and the boundary pier column (23) are both provided with a protective structure (51) and an isolation structure (52) on the side close to the spanned structure.

6. The asymmetric T-bridge rotating structure according to claim 2, characterized in that: The long arm side main beam (32) of the T-shaped bridge comprises at least one cavity, and the internal counterweights (42) of the beam are evenly arranged in the cavity.

7. The asymmetric T-bridge rotating structure according to claim 1, characterized in that: The flat-rotating ball joint (13) is provided with a traction mechanism (17) for providing power for the rotation of the T-shaped bridge.

8. The asymmetric T-bridge rotating structure according to claim 1, characterized in that: The height of the bottom end of the long arm side main beam (32) of the T-shaped bridge close to one end of the junction pier support (24) is 4 to 8 cm greater than the height of the top end of the junction pier support (24).

9. The asymmetric T-bridge rotating structure according to claim 1, characterized in that: Under normal rotation conditions, the lower end of the swivel support leg (16) is 2 to 3 cm away from the upper surface of the lower support platform (12) at the ball joint.

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