CN220117003U

CN220117003U - Inclined steel bridge anti-spin device

Info

Publication number: CN220117003U
Application number: CN202321419755.6U
Authority: CN
Inventors: 张立明; 颜亮; 眭封云; 彭杰; 张涛; 李春宝
Original assignee: Zhongyifeng Construction Group Co Ltd
Current assignee: Zhongyifeng Construction Group Co Ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-12-01
Anticipated expiration: 2033-06-06

Abstract

The utility model relates to an anti-spin device for an inclined steel bridge, which comprises a bridge abutment embedded member and a steel box welding member, wherein a U-shaped groove of the bridge abutment embedded member is spliced with a plugboard at one end of the steel box welding member, the top end of the steel box welding member is fixedly connected with a steel box, the bridge abutment embedded member is fixed to a bridge abutment cap, a plurality of elastic rubber cushion blocks are crimped between the steel box and the bridge abutment embedded member, a bridge abutment support is arranged at the top end of the bridge abutment cap, the top end of the bridge abutment support is provided with the steel box, and bending steel bars of the bridge abutment embedded member are fixedly connected with the bridge abutment cap through concrete. The anti-spin device for the inclined steel bridge has the advantages of preventing spin, being convenient to construct, improving universality and the like.

Description

Inclined steel bridge anti-spin device

Technical Field

The utility model relates to the technical field of inclined steel bridges, in particular to an anti-spin device of an inclined steel bridge.

Background

Some skew bridges present some unique problems during construction and operation that differ from orthogonal bridges.

1. And (5) bending and twisting coupling. When a force acts on the beam axis, a torque is generated in addition to an internal force bending moment.

2. The reaction force is unevenly distributed. The obtuse angle counter force is big, and the acute angle counter force is little, appears the negative counter force even.

3. The mid-span bending moment is reduced.

4. In-plane displacement. When external factors (temperature changes, automobile braking forces, etc.) change, the inclined bridge will have strain at various points in the plane of the traffic lane, and displacement will occur at various supporting points, namely constraint counter-force (parallel to the traffic lane) is generated on the supporting points, and the forces may generate an unbalanced rotation moment, so that the inclined bridge is caused to creep. On the other hand, when external loads (wind force, seismic force) are applied to the inclined bridge, if these forces do not pass through the rotation center, unbalanced moment and resultant force are generated at the rotation center, and rotation and translation, i.e., spinning, of the inclined bridge in the plane thereof are caused.

At present, the built inclined steel bridge has the phenomena of support cross bridge dislocation and stop block shearing damage, and is difficult to repair. The abutment stop block is transversely limited. In extreme cases the stop is broken by shear. And a special basin-type anti-seismic support is selected, so that the transverse deformation allowance is increased.

It is urgently needed to provide an anti-spin measure for transverse constraint and longitudinal release of an inclined steel bridge, so as to ensure the service life of the bridge. For this purpose we have developed an anti-spin device for a beveled steel bridge to solve the above problems.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the anti-spin device for the inclined steel bridge, which has the advantages of spin prevention, convenience in construction, improvement of universality and the like.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a device is prevented spinning by oblique steel bridge, includes a bridge abutment pre-buried component and a steel case welding member, the bridge abutment pre-buried component with one end of steel case welding member is pegged graft, a steel case of top fixed connection of steel case welding member, the bridge abutment pre-buried component is fixed to the bridge abutment cap, the steel case with a plurality of elasticity rubber cushion of crimping between the bridge abutment pre-buried component, the top department of bridge abutment cap is equipped with a bridge abutment support, the top of bridge abutment support is erect the steel case.

Preferably, the abutment embedded member is provided with a supporting plate, a hook is arranged at the top end of the supporting plate, and a plurality of bending steel bars are arranged at the bottom end of the supporting plate.

Preferably, a short end is arranged at one end of the hook, a long end is arranged at the other end of the hook, and a U-shaped groove is arranged between the short end and the long end.

Preferably, a plug board is arranged at the bottom end of the steel box welding component, and the plug board is spliced with the U-shaped groove.

Preferably, a first support plate and a second support plate are arranged in parallel at the top end of the plugboard, and the heights of the first support plate and the second support plate are the same.

Preferably, the bending steel bar is of a shape like a Chinese character 'ji', a U-shaped hook is respectively arranged at two ends of the bending steel bar, and the bending steel bar is fixedly connected with the abutment cap through concrete.

Preferably, the number of the bending steel bars is 3.

Preferably, a steel box base is arranged at the bottom end of the steel box, and the steel box base is fixedly connected with the first support plate and the second support plate respectively.

Preferably, the abutment support is provided with a support plate, and the bottom end of the support plate, the top end of the support plate and the top end of the abutment cap are arranged on the same horizontal plane.

Preferably, a abutment body is arranged at one end of the abutment cap, and the top end of the abutment body is higher than the top end of the steel box welding member.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1. according to the utility model, spin phenomenon can occur in the inclined bridge theoretically according to the inclined bridge calculation theory, and a special device is needed to solve the spin phenomenon, so that the transverse constraint of the bridge is enhanced by the steel box welding component and the bridge abutment embedded component.

2. The resistance effect of the welded steel structure is remarkable, and the spin and overturning of the bridge can be avoided.

3. The construction is convenient, all components can be customized in a factory, and the method is environment-friendly.

4. The manufacturing cost is low, the applicability is good, and any inclined steel bridge can be adopted.

Drawings

FIG. 1 is a schematic diagram of the structure of the anti-spin device of the inclined steel bridge.

Fig. 2 is a schematic structural view of the anti-spin device of the inclined steel bridge.

Fig. 3 is a schematic structural view of the anti-spin device of the inclined steel bridge.

Detailed Description

The utility model will be described in further detail with reference to the accompanying drawings and specific examples.

In fig. 1 to 3, an anti-spin device for an inclined steel bridge comprises a bridge abutment pre-buried member 20 and a steel box welding member 10, wherein a U-shaped groove 23 of the bridge abutment pre-buried member 20 is inserted into a plug board 11 at one end of the steel box welding member 10, a steel box 60 is fixedly connected to the top end of the steel box welding member 10, the bridge abutment pre-buried member 20 is fixed to a bridge abutment cap 40, a plurality of elastic rubber cushion blocks 30 are crimped between the steel box 60 and the bridge abutment pre-buried member 20, namely, a plurality of elastic rubber cushion blocks 30, preferably 4 elastic rubber cushion blocks are crimped between a short end 221 and a steel box base 61, a bridge abutment support 50 is arranged at the top end of the bridge abutment cap 40, and the steel box 60 is erected at the top end of the bridge abutment support 50.

A abutment body 41 is provided at one end of the abutment cap 40, the abutment support 50 is provided with a support plate 51, and a steel box base 61 is provided at the bottom end of the steel box 60. The top end of the table body 41 is disposed higher than the top end of the steel box welding member 10. The bottom end of the support plate 51, the top end of the support plate 21 and the top end of the abutment cap 40 are disposed on the same horizontal plane. The steel box base 61 is fixedly connected with the first bracket plate 13 and the second bracket plate 12 respectively.

The bottom end of the steel box welding member 10 is provided with a plug board 11, the top end of the plug board 11 is provided with a first support plate 13 and a second support plate 12 in parallel, and the plug board 11 is spliced with the U-shaped groove 23. The first bracket plate 13 is the same height as the second bracket plate 12.

The abutment embedded member 20 is provided with a supporting plate 21, a hook piece 22 is welded at the top end of the supporting plate 21, a short end 221 is arranged at one end of the hook piece 22, a long end 222 is arranged at the other end of the hook piece 22, the short end 221 is arranged on the upper side of the long end 222, and a plurality of bending steel bars 26 which are arranged in parallel are welded at the bottom end of the supporting plate 21. The number of bent bars 26 is preferably 3. The bending steel bar 26 is of a shape like a Chinese character 'ji', a U-shaped hook 27 is respectively arranged at two ends of the bending steel bar 26, and the bending steel bar 26 is fixedly connected with the abutment cap 40 through concrete. A U-shaped slot 23 is provided between the short end 221 and the long end 222.

The oblique steel bridge Liang Zixuan starts from the transverse deformation of the upper part of the bridge steel box 60 at the abutment, and the special device is adopted to tighten the lower part of the upper part to restrict the transverse deformation capacity of the upper part, namely one end of the plug board 11 is inserted into the U-shaped groove 23, and the forward deformation capacity of the plug board is not restricted. So that the upper part of the bridge cannot spin. The bridge abutment embedded member 20 is embedded on the bridge abutment, the steel box welding member 10 is welded at the corresponding position of the bottom of the steel box girder, the elastic rubber cushion block 30 is filled between the bridge abutment embedded member 20, the combined member of the steel box welding member 10 and the steel box 60, namely, the short end 221 of the hook piece 22, the elastic rubber cushion block 30 is filled between the steel box girder steel box base 61 and the first support plate 13, and the combined member can provide the bridge anti-spin capability.

The foregoing is merely a specific application example of the present utility model, and the protection scope of the present utility model is not limited in any way. All technical schemes formed by equivalent transformation or equivalent substitution fall within the protection scope of the utility model.

Claims

1. The utility model provides a device is prevented spinning by oblique steel bridge which characterized in that: including a bridge abutment pre-buried component (20) and a steel case welding component (10), bridge abutment pre-buried component (20) with one end grafting of steel case welding component (10), a steel case (60) of top fixed connection of steel case welding component (10), bridge abutment pre-buried component (20) are fixed to bridge abutment cap (40), steel case (60) with a plurality of elastic rubber cushion (30) of crimping between bridge abutment pre-buried component (20), the top department of bridge abutment cap (40) is equipped with a bridge abutment support (50), the top of bridge abutment support (50) is erect steel case (60).

2. The anti-spin device of the oblique steel bridge according to claim 1, wherein the abutment embedded member (20) is provided with a supporting plate (21), a hook (22) is arranged at the top end of the supporting plate (21), and a plurality of bending steel bars (26) are arranged at the bottom end of the supporting plate.

3. The anti-spin device of a diagonal steel bridge according to claim 2, wherein a short end (221) is provided at one end of the hook member (22), a long end (222) is provided at the other end of the hook member (22), and a U-shaped groove (23) is provided between the short end (221) and the long end (222).

4. A tilting steel bridge anti-spin device according to claim 3, characterized in that a plug board (11) is provided at the bottom end of the steel box welding member (10), said plug board (11) being plugged into the U-shaped groove (23).

5. The anti-spin device for the inclined steel bridge according to claim 4, wherein a first support plate (13) and a second support plate (12) are arranged in parallel at the top end of the plug board (11), and the heights of the first support plate (13) and the second support plate (12) are the same.

6. The anti-spin device of the inclined steel bridge according to claim 2, wherein the bending steel bars (26) are of a shape like a Chinese character 'ji', two ends of the bending steel bars (26) are respectively provided with a U-shaped hook (27), and the bending steel bars (26) are fixedly connected with the bridge abutment cap (40) through concrete.

7. The anti-spin device of the inclined steel bridge according to claim 6, wherein the number of the bending steel bars (26) is 3.

8. The anti-spin device for the inclined steel bridge according to claim 5, wherein a steel box base (61) is arranged at the bottom end of the steel box (60), and the steel box base (61) is fixedly connected with the first support plate (13) and the second support plate (12) respectively.

9. The tilting steel bridge anti-spin device according to claim 2, wherein the abutment support (50) is provided with a support plate (51), the bottom end of the support plate (51), the top end of the support plate (21) and the top end of the abutment cap (40) being arranged on the same horizontal plane.

10. The anti-spin device of the inclined steel bridge according to claim 1, wherein a stand body (41) is arranged at one end of the abutment cap (40), and the top end of the stand body (41) is higher than the top end of the steel box welding member (10).