CN213571599U

CN213571599U - Bridge jacking limiting device

Info

Publication number: CN213571599U
Application number: CN202022223104.2U
Authority: CN
Inventors: 刘振川; 周旭; 刘金伟; 班盛钧; 班鹏辉; 李炯余
Original assignee: Road and Bridge International Co Ltd; Road and Bridge South China Engineering Co Ltd
Current assignee: Road and Bridge International Co Ltd; Road and Bridge South China Engineering Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-29
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to a bridge jacking stop device, include: set up in the same direction as the bridge vertical stop device between the roof beam body and abutment cap to and set up in horizontal stop device between the roof beam body and the bent cap, vertical stop device includes jack and backing plate, the jack top is tight the backing plate makes the backing plate with abutment cap top is tight, the jack with the roof beam body top is tight. Set up vertical stop device between the roof beam body and the abutment cap in this application, still be provided with horizontal stop device between the roof beam body and the bent cap, avoid raising the bridge floor in-process, because existence, environmental factor and the operating equipment of expansion joint for the bridge floor is difficult vertical or lateral displacement at the lifting in-process, has guaranteed the line type behind the bridge lifting.

Description

Bridge jacking limiting device

Technical Field

The utility model relates to a building technical field, concretely relates to bridge jacking stop device.

Background

With the mass construction of highways in China, more original roads reach or exceed the design service life, and the original roads need to be renovated. The common form of road renovation is mainly to pave an asphalt pavement after the disease treatment is carried out on the original concrete pavement. Therefore, in the road sections with elevated road surface elevations, the upper structures of some built bridges still in service life need to be heightened synchronously so as to be smoothly connected with newly-repaired roads. In the process of lifting the bridge deck, longitudinal or transverse displacement of the bridge deck is easy to occur in the lifting process due to the existence of expansion joints and the influence of environmental factors and operating equipment.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problems, particularly the problems that the bridge deck is easy to longitudinally and/or transversely displace in the lifting process due to the existence of expansion joints and the influence of environmental factors and operating equipment, the following technical scheme is proposed:

the embodiment of the application provides a bridge jacking stop device, include: set up in the same direction as the bridge vertical stop device between the roof beam body and abutment cap to and set up in horizontal stop device between the roof beam body and the bent cap, vertical stop device includes jack and backing plate, the jack top is tight the backing plate makes the backing plate with abutment cap top is tight, the jack with the roof beam body top is tight.

Optionally, the backing plate is a stainless steel plate.

Optionally, the bridge further comprises a base for mounting the jack, wherein the base is connected with the bridge coping through a chemical anchor bolt.

Optionally, when the jack is located between the beam body and the abutment cap, an axis of the jack is parallel to a horizontal line.

Optionally, the longitudinal limiting device is arranged at an expansion joint of the abutment with a lower height of the integral bridge.

Optionally, the capping beam comprises a stopper located at an outer side of a transverse end of the beam body, and the transverse limiting device is disposed between the beam body and the stopper.

Optionally, the beam body comprises a web, and the lateral limiting device is disposed between the web and the stopper.

Optionally, the transverse limiting device is a square wood block.

Compared with the prior art, the utility model, following beneficial effect has:

the embodiment of the application provides a bridge jacking stop device, include: set up in the same direction as the bridge vertical stop device between the roof beam body and abutment cap to and set up in horizontal stop device between the roof beam body and the bent cap, vertical stop device includes jack and backing plate, the jack top is tight the backing plate makes the backing plate with abutment cap top is tight, the jack with the roof beam body top is tight. Set up vertical stop device between the roof beam body and the abutment cap in this application, still be provided with horizontal stop device between the roof beam body and the bent cap, avoid raising the bridge floor in-process, because existence, environmental factor and the operating equipment of expansion joint for longitudinal or lateral displacement's the difficult condition of appearing in the lifting in-process of bridge floor.

According to the bridge jacking limiting device provided by the embodiment of the application, the base plate is the stainless steel plate, the longitudinal limiting device is arranged at the bridge abutment expansion joint with the lower height of the integral bridge, so that the friction force between the jack and the bridge abutment cap is reduced, the jack can be easily placed in the expansion joint of the bridge abutment, meanwhile, the stainless steel base plate can also disperse the pressure applied to the bridge abutment cap by the jack, and the jack is prevented from damaging the concrete surface of the bridge abutment cap in the jacking process; the base of jack pass through chemical crab-bolt with the abutment bent cap is connected, guarantees jack and to the tight effect in top between the bridge deck body and the abutment cap, avoids the whole lifting process of bridge floor longitudinal displacement to appear, and chemical crab-bolt has reduced the damage to old bridge abutment bent cap simultaneously.

The bridge jacking limiting device provided by the embodiment of the application borrows the bent cap stop block, and the limit on the transverse displacement of the bridge is realized by filling the square wood block between the stop block and the beam body, so that the waste of materials is reduced, prefabrication in a factory is not needed, and the cost is reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a longitudinal limiting device in the bridge jacking limiting device of the utility model;

fig. 2 is the utility model discloses among the bridge jacking stop device horizontal stop device's the schematic structure diagram.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, but do not preclude the presence or addition of one or more other features, integers, steps, operations, and/or groups thereof.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The embodiment of the application provides a bridge jacking stop device, as shown in fig. 1 and fig. 2, include: a longitudinal limiting device 3 arranged between the beam body 1 and the abutment cap 2 along the bridge direction, and a transverse limiting device 5 arranged between the beam body 1 and the cover beam 4. In an embodiment that this application provided, the jacking stop device that this application provided can avoid bridge whole lifting in-process bridge to take place vertically and lateral shifting for the bridge line type changes lessly, and the bridge whole jacking in-process avoids raising the bridge floor in-process, because existence, environmental factor and the operating equipment at the expansion joint, makes the bridge floor be difficult for taking place vertically or lateral shifting at the lifting in-process.

The application provides a jacking stop device mainly is applied to the whole jacking in-process of bridge of hollow slab roof beam, as shown in fig. 1, optionally, vertical stop device 3 sets up in the lower abutment expansion joint department of whole bridge elevation. In the embodiment provided by the application, the longitudinal limiting device 3 comprises a jack 31 and a base plate 32, the jack 31 tightly pushes the base plate 32, so that the base plate 32 tightly pushes the abutment cap 2, and the jack 31 tightly pushes the beam body 1. When the longitudinal limiting device 3 is placed in the expansion joint, the backing plate 32 can reduce the friction force between the jack 31 and the bridge cap 2, and optionally, the backing plate 32 is a stainless steel plate. When reducing frictional force, backing plate 32 can also guarantee the planarization of jack contact surface, and then can firmly push up in the expansion joint between roof beam body 1 and abutment cap 2. Because the expansion joint clearance is less, optionally, in the embodiment that this application provided, the jack adopts ultra-thin jack. After the expansion joint of the bridge abutment is broken and before formal jacking, a jack and a stainless steel plate are plugged between the beam end and the abutment back in the expansion joint, then the jack is pressurized and stressed by a hand pressure pump, and the jack abuts against the beam end and the abutment back so as to limit the longitudinal displacement of the bridge in the jacking process.

Because the jacking stop device that this application provided mainly is applied to the whole jacking in-process of bridge of hollow slab roof beam, and then the roof beam body of jacking is the roof beam body of old bridge, and the abutment cap that corresponds also is the structure on the old bridge abutment, and the surface is eroded for the surface appears damaging when receiving the pressure that enlarges easily. However, in the jacking process of the jack, a large pressure can be applied to the abutment cap, so that the surface of the abutment cap is easily damaged, the stainless steel base plate can disperse the pressure applied to the abutment cap by the jack, and the concrete surface of the abutment cap is prevented from being damaged in the jacking process of the jack.

Optionally, as shown in fig. 1, in order to ensure that the jack can firmly jack the bridge body and the bridge cap, the bridge cap further comprises a base for installing the jack, wherein the base is connected with the bridge cap through a chemical anchor bolt, and the chemical anchor bolt reduces damage to the old bridge cap. Alternatively, the jack 31 is located between the girder 1 and the abutment cap 2, and the axis of the jack 31 is parallel to the horizontal line. The base guarantees that the jack can horizontal installation between the roof beam body 1 and abutment block, and at the bridge jacking in-process, the jack can not take place to shift, guarantees that the jack can be tight in the top between the roof beam body and abutment block, avoids the bridge floor whole lifting in-process longitudinal displacement to appear.

Alternatively, as shown in fig. 2, the position of the transverse limiting device at one end of the bridge in the transverse bridge direction between the cover beam and the beam body is shown in fig. 2. The bent cap 4 comprises a stop block 41 positioned outside the transverse end part of the beam body 1, and the transverse limiting device 5 is arranged between the beam body 1 and the stop block 41. The reasonable utilization of the existing bent cap structure is realized, and meanwhile, the bridge cannot generate transverse displacement in the integral jacking process of the bridge, so that the waste of materials is reduced, the site construction is facilitated, and the cost is saved. Optionally, the beam body in the embodiment of the present application is a hollow slab beam, the beam body 1 includes a web 11, and the transverse limiting device 5 is disposed between the web 11 and the stopper 41. Make and have great area of contact between horizontal stop device 5 and the roof beam body 1, the tight area in top is big more, and horizontal stop device is more firm at bridge jacking in-process, guarantees that whole bridge jacking in-process, and the bridge can not take place lateral displacement.

Optionally, horizontal stop device 5 is square billet, and the billet is convenient easily obtained, in the discarded woodwork alright of job site with the preparation, be convenient for simultaneously construct, after the jacking was accomplished, the billet is convenient for retrieve, and is less to environmental pollution. In addition, the billet has better elasticity and plasticity for other steel, when filling in the gap between roof beam body web and the bent cap dog, can fill in the width and be a bit bigger than the billet of gap interval to guarantee that the billet can push up tight roof beam body web and bent cap, and then guarantee that whole bridge jacking in-process, the bridge can not take place lateral displacement.

To sum up, the bridge jacking stop device that this application provided includes following beneficial effect:

the embodiment of the application provides a bridge jacking stop device, include: set up in the same direction as the bridge vertical stop device between the roof beam body and abutment cap to and set up in horizontal stop device between the roof beam body and the bent cap, vertical stop device includes jack and backing plate, the jack top is tight the backing plate makes the backing plate with abutment cap top is tight, the jack with the roof beam body top is tight. Set up vertical stop device between the roof beam body and the abutment cap in this application, still be provided with horizontal stop device between the roof beam body and the bent cap, avoid raising the bridge floor in-process, because existence, environmental factor and the operating equipment of expansion joint for the bridge floor is difficult vertical or lateral displacement at the lifting in-process.

The above are only some embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a bridge jacking stop device which characterized in that includes: set up in the same direction as the bridge vertical stop device between the roof beam body and abutment cap to and set up in horizontal stop device between the roof beam body and the bent cap, vertical stop device includes jack and backing plate, the jack top is tight the backing plate makes the backing plate with abutment cap top is tight, the jack with the roof beam body top is tight.

2. The bridge jacking limiting device of claim 1, wherein the backing plate is a stainless steel plate.

3. The bridge jacking limiting device of claim 1, further comprising a base for mounting the jack, the base being connected to the abutment capping beam by a chemical anchor.

4. The bridge jacking limiting device of claim 1, wherein when the jack is positioned between the beam body and the abutment cap, an axis of the jack is parallel to a horizontal line.

5. The bridge jacking limiting device of claim 1, wherein the longitudinal limiting device is arranged at an abutment expansion joint with a lower height of the integral bridge.

6. The bridge jacking limiting device of claim 1, wherein the capping beam comprises a stop block located outside a lateral end of the beam body, the lateral limiting device being disposed between the beam body and the stop block.

7. The bridge jacking limiting device of claim 6, wherein the beam body includes a web, the lateral limiting device being disposed between the web and the stop.

8. The bridge jacking limiting device of claim 1, wherein the lateral limiting device is a square wood block.