Suspended bolt device for temporary support of bridge rotation

Abstract

The utility model relates to the technical field of bridge rotation, in particular to a suspended bolt device for temporary support of bridge rotation, which comprises a lower bearing platform, supporting legs arranged on the lower bearing platform, an upper turntable arranged on the supporting legs, a plurality of I-shaped steel II arranged on the lower bearing platform, and a plurality of I-shaped steel I arranged on the upper turntable. The upper rotating disc and the I-shaped steel are connected through a suspended bolt device, and a connecting assembly is arranged on the upper rotating disc. The suspended bolt device is arranged, the settlement height caused by the dead weight of the beam body and the construction period can be offset by adjusting the height of the upper nut and the height of the lower nut, and the gap between the upper I-shaped steel and the lower I-shaped steel can also reduce vertical transmission of disturbance such as vibration and friction generated by influences of uneven construction, natural factors and the like; in addition, on-site welding and cutting are not needed, beam body disturbance caused by cutting is avoided, only the bolts need to be detached before rotation, a gap is reserved between the I-shaped steel and the II-shaped steel after detachment, and rotation of the beam body is not affected at all.

Description

Technical Field

[0001] This utility model relates to the field of bridge rotation technology, specifically to a suspended bolt device for temporary support during bridge rotation. Background Technology

[0002] Bridge rotation technology is a very mature bridge construction technology. However, due to the limitations of the construction process, the spherical hinge rotation generally takes about a year from installation to the start of rotation. During this period, factors such as beam construction and wind and snow loads can affect the safety of the beam structure. Therefore, it is often necessary to pre-embed temporary supports between the turntable and the abutment to maintain the safety and stability of the bridge structure.

[0003] Traditional temporary supports are stabilized by pre-embedding multiple sets of single H-beams or I-beams. After being pre-embedded, these temporary supports form a rigid connection between the upper and lower structures of the bridge. They cannot offset the settlement and deformation of the bridge during the construction period on their own. Moreover, the steel sections need to be cut during the rotation. The rotation structure will generate huge stress release at the moment of cutting, which will cause potential safety hazards to the structure.

[0004] Based on this, a suspended bolt device for temporary support of bridge rotation is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] To address the aforementioned problems, a suspended bolt device for temporary support during bridge rotation is provided, which solves the current issues.

[0006] To address the existing technical problems, this utility model provides a suspended bolt device for temporary support of bridge rotation, including a lower bearing platform, a support leg on the lower bearing platform, an upper turntable on the support leg, a plurality of No. II I-beams on the lower bearing platform, a plurality of No. I I-beams on the upper turntable, the upper turntable and the No. I I-beams being connected by a suspended bolt device, and a connecting component on the upper turntable.

[0007] Preferably, the suspended bolt device includes stiffening rib steel plates, an upper connecting plate, a lower connecting plate, bolts, a polytetrafluoroethylene sliding plate, a limiting support, and grooves. The other end of the No. I I-beam is welded to the upper connecting plate, and the other end of the No. II I-beam is welded to the lower connecting plate. The surfaces of the upper and lower connecting plates are symmetrically provided with a plurality of grooves and corresponding bolt holes. Bolts pass through the bolt holes. Limiting supports are provided in the grooves between the upper and lower connecting plates. Stiffening rib steel plates are welded between the upper connecting plate and the No. I I-beam and between the lower connecting plate and the No. II I-beam.

[0008] Preferably, the No. I and No. II I-beams are of the same specification.

[0009] Preferably, both ends of the limiting top support are fixed with polytetrafluoroethylene sliding plates.

[0010] Preferably, the upper connecting plate and the lower connecting plate are of the same specification, and the bolt consists of a long threaded rod and multiple sets of nuts. The long threaded rod and the combination of nuts connect the upper connecting plate and the lower connecting plate, making the No. I I-beam and the No. II I-beam a whole.

[0011] The advantages of this utility model compared to the prior art are:

[0012] 1. This utility model, by setting up a suspended bolt device, provides a connection method with high compressive and shear strength, ensuring that the temporary support remains firmly connected under external forces. It also has the advantages of being easy to install, adjust, and maintain. By adjusting the height of the upper and lower nuts, the settlement height caused by the beam's self-weight and construction period can be offset. The gap between the upper and lower I-beams can also reduce the vertical transmission of disturbances such as vibration and friction caused by uneven construction and natural factors, thereby improving the overall stability and safety.

[0013] 2. Before the rotation, the temporary support needs to be removed. The temporary support with this bolt connection does not need to be welded or cut on site, and will not cause any disturbance to the beam due to cutting. The bolts can be removed before the rotation, which is convenient and quick. After removal, there is still a gap between the No. I and No. II I-beams, which will not affect the rotation of the beam. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a suspended bolt device used for temporary support during bridge rotation.

[0015] Figure 2 This is a schematic diagram of a suspended bolt device used for temporary support during bridge rotation.

[0016] Figure 3 A suspended bolt device for temporary support during bridge rotation. Figure 2 Schematic diagram of the cross section of section aa.

[0017] Figure 4 A suspended bolt device for temporary support during bridge rotation. Figure 2 Schematic diagram of the cross section of the middle section.

[0018] The following are the labels in the diagram: 1. Upper turntable; 2. Support leg; 3. Lower support platform; 4. No. I I-beam; 5. Suspension bolt device; 51. Stiffening rib steel plate; 52. Upper connecting plate; 53. Lower connecting plate; 54. Bolt; 55. PTFE sliding plate; 56. Limiting top support; 57. Groove; 6. Connecting assembly; 7. No. II I-beam. Detailed Implementation

[0019] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0020] Reference Figures 1-4 A suspended bolt device for temporary support of bridge rotation includes a lower bearing platform 3, a support leg 2 on the lower bearing platform 3, an upper turntable 1 on the support leg 2, a plurality of No. II I-beams 7 on the lower bearing platform 3, a plurality of No. I I-beams 4 on the upper turntable 1, the upper turntable 1 and the No. I I-beams 4 are connected by a suspended bolt device 5, and a connecting component 6 is provided on the upper turntable 1.

[0021] The suspended bolt device 5 can offset its settlement height, and the temporary support under such a connection structure does not require on-site welding or cutting. The bolt 54 can be removed before rotation, which is convenient and quick.

[0022] Reference Figures 1-4 The suspended bolt device 5 includes stiffening rib steel plates 51, upper connecting plate 52, lower connecting plate 53, bolts 54, polytetrafluoroethylene sliding plate 55, limiting support 56, and grooves 57. The other end of the No. I I-beam 4 is welded to the upper connecting plate 52, and the other end of the No. II I-beam 7 is welded to the lower connecting plate 53. The surfaces of the upper connecting plate 52 and the lower connecting plate 53 are symmetrically provided with a number of grooves 57 and corresponding bolt holes. Bolts 54 are inserted through the bolt holes. Limiting support 56 is provided in the grooves 57 between the upper connecting plate 52 and the lower connecting plate 53. Stiffening rib steel plates 51 are welded between the upper connecting plate 52 and the No. I I-beam 4 and the lower connecting plate 53 and the No. II I-beam 7.

[0023] The suspended bolt device 5 provides a buffering characteristic for the connection between the upper turntable 1 and the lower bearing platform 3. The vibration and friction caused by uneven construction and natural factors on the upper turntable 1 are transmitted to the suspended bolt device 5 below the No. I I-beam 4. The gap between the No. I I-beam 4 and the No. II I-beam 7 can offset the disturbance. When the ground vibrates slightly, the suspended bolt device 5 can also offset the disturbance. The setting of the limiting top support 56 effectively prevents the structural settlement from exceeding the design allowable value.

[0024] Reference Figures 1-4 The No. I I-beam 4 and No. II I-beam 7 are of the same specification.

[0025] I-beam 4 (No. I) and I-beam 7 (No. II) are used to connect the upper turntable 1 and the lower bearing platform 2.

[0026] Reference Figures 2-3 The limiting top support 56 is fixedly provided with polytetrafluoroethylene sliding plates 55 at both ends.

[0027] PTFE skateboard 55 is a very smooth material with an extremely low coefficient of friction. This characteristic allows PTFE skateboards to significantly reduce friction during use.

[0028] Reference Figures 2-4 The upper connecting plate 52 and the lower connecting plate 53 are of the same specification. The bolt 54 is composed of a long screw and multiple sets of nuts. The long screw and the combination of nuts connect the upper connecting plate 52 and the lower connecting plate 53 to make the No. I I steel 4 and the No. II I steel 7 into a whole.

[0029] Its height can be freely adjusted by the upper and lower nuts, so the settlement height can be offset by adjusting the bolts 54. The multiple sets of bolts 54 set between the upper connecting plate 52 and the lower connecting plate 53 can also better ensure its horizontality and verticality. The temporary support needs to be removed before rotation. The temporary support connected by the suspended bolt device 5 does not need to be welded or cut on site. The bolts 54 only need to be removed before rotation, which is convenient and quick.

[0030] Working Principle: After the bridge rotation device is installed, it needs to undergo a considerable period before rotation. During this period, the beam will inevitably settle. Since the temporary support is connected in the middle by a suspended bolt device 5, its height can be freely adjusted by the upper and lower nuts. Therefore, the settlement height can be offset by adjusting the bolts 54. The multiple sets of bolts 54 set between the upper connecting plate 52 and the lower connecting plate 53 can also better ensure its horizontality and verticality. The temporary support needs to be removed before rotation. The temporary support connected by the suspended bolt device 5 does not require on-site welding or cutting. It is only necessary to remove the bolts 54 before rotation, which is convenient and quick. There is still a gap between the No. 1 I-beam 4 and the No. 2 I-beam 7, which does not affect the rotation of the beam. The temporary support connected by the suspended bolt device 5 has better stability and safety. The suspended bolt device 5 provides better stability and safety for the upper turntable 1 and the lower turntable 2. The connection between the lower piers 3 provides a buffering effect. Vibrations and friction caused by uneven construction and natural factors on the upper turntable 1 are transmitted to the suspended bolt device 5 below the No. I I-beam 4. The gap between the No. I I-beam 4 and the No. II I-beam 7 can offset this disturbance. When the ground experiences minor vibrations, the suspended bolt device 5 can also offset the disturbance. The setting of the limiting top support 56 effectively prevents the structural settlement from exceeding the design allowable value. Such a temporary support structure for bridge rotation has the advantages of convenient installation, strong adaptability, and high safety. In practical applications, the design of the suspended bolt device 5 can further enhance stability and prevent the nuts from loosening by fixing with double nuts. Therefore, it has high compressive strength and shear strength, which can ensure that the temporary support remains firmly connected under the action of external forces. At the same time, it has the advantages of easy installation, adjustment and maintenance.

[0031] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A suspended bolt device for temporary support of a bridge turnkey, characterized in that, Includes a lower support platform (3), on which a support leg (2) is provided, on which an upper turntable (1) is provided, on which a number of No. II I-beams (7) are provided on the lower support platform (3), on which a number of No. I I-beams (4) are provided on the upper turntable (1), and the upper turntable (1) and the No. I I-beams (4) are connected by a suspension bolt device (5), and on which a connecting component (6) is provided on the upper turntable (1).

2. The suspended bolt device for temporary support of a bridge swing according to claim 1, wherein The suspended bolt device (5) includes stiffening rib steel plate (51), upper connecting plate (52), lower connecting plate (53), bolt (54), polytetrafluoroethylene sliding plate (55), limiting support (56) and groove (57). The other end of the No. I I-beam (4) is welded to the upper connecting plate (52), and the other end of the No. II I-beam (7) is welded to the lower connecting plate (53). The upper connecting plate (52) and the lower connecting plate (53) are symmetrically provided with a number of grooves (57) and corresponding bolt holes. Bolts (54) are provided through the bolt holes. Limiting support (56) is provided in the grooves (57) between the upper connecting plate (52) and the lower connecting plate (53). Stiffening rib steel plate (51) is welded between the upper connecting plate (52) and the No. I I-beam (4) and the lower connecting plate (53) and the No. II I-beam (7).

3. The suspended bolt device for temporary support of a bridge swing according to claim 1, wherein The No. I I-beam (4) and No. II I-beam (7) are of the same specification.

4. The suspended bolt device for temporary support of a bridge swing according to claim 2, wherein Both ends of the limiting top support (56) are fixed with polytetrafluoroethylene sliding plates (55).

5. The suspended bolt device for temporary support of a bridge swing according to claim 2, wherein The upper connecting plate (52) and the lower connecting plate (53) are of the same specification. The bolt (54) is composed of a long screw and multiple sets of nuts. The long screw and the nuts connect the upper connecting plate (52) and the lower connecting plate (53) to make the No. I I-beam (4) and the No. II I-beam (7) a whole.

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