CN219992219U - Pushing construction device for inclined bottom steel box girder and bridge construction structure - Google Patents
Pushing construction device for inclined bottom steel box girder and bridge construction structure Download PDFInfo
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- CN219992219U CN219992219U CN202321489617.5U CN202321489617U CN219992219U CN 219992219 U CN219992219 U CN 219992219U CN 202321489617 U CN202321489617 U CN 202321489617U CN 219992219 U CN219992219 U CN 219992219U
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- 241000276694 Carangidae Species 0.000 description 4
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Abstract
The utility model discloses a pushing construction device of an inclined bottom steel box girder and a bridge construction structure, relating to the technical field of bridge girder construction, comprising the following steps: a support beam arranged along the forward bridge direction; two temporary buttresses vertically arranged on the top surface of the supporting beam, and a first wedge-shaped steel backing plate is arranged on the top of the temporary buttresses; the vertical big jack subassembly that sets up in the middle of two interim buttress, and can follow bridge to the removal relative supporting beam, its top sets up the second wedge steel backing plate, the top surface of first wedge steel backing plate and second wedge steel backing plate all matches in the sloping plate of sloping bottom steel box girder. The utility model also discloses a bridge construction structure comprising the pushing construction device. The pushing construction device and the bridge construction structure effectively solve the problem that pushing construction cannot be carried out on the inclined bottom plate of the inclined bottom steel box girder in the prior art.
Description
Technical Field
The utility model relates to the technical field of bridge beam construction, in particular to a pushing construction device and a bridge construction structure of an inclined bottom steel box beam.
Background
At present, when a bridge spans a river, a lake, a sea, a road and a railway, a large-span box girder is mostly adopted, and is influenced by terrain and geology, the box girder is installed in a pushing mode, namely, the box girder is lifted to a designated height and then is pushed to a designated position along the bridge.
With the continuous progress of technology, wind tunnel tests are mostly needed before the section of the box girder is determined, so that adverse effects caused by later wind vibration are reduced. Through wind tunnel tests, the cross section of the box girder is mostly designed into a form of a tuyere or an inclined bottom plate; however, the box girder in the form of a tuyere or an inclined bottom plate brings great difficulty to pushing construction.
In the related art, the pushing construction often avoids the inclined bottom plate position, and a pushing point is arranged in the middle of the box girder, so that the structural strength of the middle part of the box girder is required to be integrally reinforced, and a large amount of reinforcing materials are wasted. The pushing support is unreasonable in stress due to the fact that the pushing support cannot be balanced in transverse arrangement, resources are wasted seriously, and meanwhile the pushing construction efficiency is affected.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a pushing construction device of an inclined bottom steel box girder and a bridge construction structure, which effectively solve the problem that pushing construction cannot be carried out on an inclined bottom plate of the inclined bottom steel box girder in the prior art.
In order to achieve the above purpose, the technical scheme adopted is as follows: an incremental launching construction device of an inclined bottom steel box girder, comprising: a support beam arranged along the forward bridge direction;
two temporary buttresses vertically arranged on the top surface of the supporting beam, and a first wedge-shaped steel backing plate is arranged on the top of the temporary buttresses;
the vertical big jack subassembly that sets up in the middle of two interim buttress, and can follow bridge to the removal relative supporting beam, its top sets up the second wedge steel backing plate, the top surface of first wedge steel backing plate and second wedge steel backing plate all matches in the sloping plate of sloping bottom steel box girder.
On the basis of the technical scheme, the rubber backing plates for increasing friction force are paved on the top surfaces of the first wedge-shaped steel backing plate and the second wedge-shaped steel backing plate.
On the basis of the technical scheme, a small jack is further arranged between the temporary buttress and the first wedge-shaped steel backing plate.
On the basis of the technical scheme, the top circumference of the temporary buttress is provided with an outer bearing platform, the circumference of the first wedge-shaped steel backing plate is provided with an auxiliary platform, and the small jack is arranged between the outer bearing platform and the auxiliary platform.
On the basis of the technical scheme, the large jack assembly comprises a sliding rail and more than one large jack body, the sliding rail is arranged between two temporary buttresses along the forward bridge direction, and the bottom surface of the sliding rail is fixed on the supporting beam; the bottom of big jack body slidable matches in the slide rail.
On the basis of the technical scheme, the number of the large jack bodies is two, and the two large jack bodies are connected into a whole through the fixed connecting rod.
The utility model also discloses a bridge construction structure which comprises a plurality of bridge brackets, wherein the pushing construction device is arranged at the top end of the bridge bracket positioned below the side of the inclined bottom steel box girder, and the first wedge-shaped steel backing plate and/or the second wedge-shaped steel backing plate of the pushing construction device are/is propped against the inclined bottom plate of the inclined bottom steel box girder.
On the basis of the technical scheme, the rubber backing plates for increasing friction force are paved on the top surfaces of the first wedge-shaped steel backing plate and the second wedge-shaped steel backing plate.
On the basis of the technical scheme, a small jack is further arranged between the temporary buttress and the first wedge-shaped steel backing plate; the top circumference of interim buttress sets up outer cushion cap, the circumference of first wedge steel backing plate sets up auxiliary table, little jack sets up between outer cushion cap and auxiliary table.
On the basis of the technical scheme, the large jack assembly comprises a sliding rail and more than one large jack body, the sliding rail is arranged between two temporary buttresses along the forward bridge direction, and the bottom surface of the sliding rail is fixed on the supporting beam; the bottom end of the large jack body is slidably matched with the sliding rail; the number of the large jack bodies is two, and the two large jack bodies are connected into a whole through the fixed connecting rod.
The technical scheme provided by the utility model has the beneficial effects that:
according to the pushing construction device and the bridge construction structure, the position of the inclined bottom plate is not required to be avoided in the pushing construction process, when the pushing construction device and the bridge construction structure are used, the inclined bottom plate of the inclined bottom steel box girder falls on the front temporary buttress and the rear temporary buttress, when the pushing construction is required, the middle large jack assembly jacks up the inclined bottom steel box girder after jacking, the inclined bottom plate of the inclined bottom steel box girder and the temporary buttress are separated, the first wedge-shaped steel base plate 4 and the second wedge-shaped steel base plate adapt to the inclined bottom plate of the inclined bottom steel box girder, and the friction force between the wedge-shaped steel cushion block and the inclined bottom plate is increased by the rubber base plate. Compared with the prior art, the pushed inclined bottom steel box girder does not need to be structurally reinforced at the middle part, the steel girder pushing reinforcement measures are simplified, in the pushing process, the stress of the inclined bottom steel box girder is reasonable, the site operation difficulty is reduced, the working efficiency of pushing construction is greatly improved, the engineering quality is improved, the construction cost is reduced, and the problem that walking pushing cannot be carried out on an inclined bottom plate of the inclined bottom steel box girder in the prior art is effectively solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a portion of a pusher of a steel box girder with an inclined bottom according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a pushing construction device according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
reference numerals: 1. a support beam; 2. temporary buttresses; 21. an outer bearing platform; 3. a large jack assembly; 4. a first wedge-shaped steel backing plate; 41. an auxiliary table; 5. a second wedge steel shim plate; 6. a rubber backing plate; 7. a small jack; 8. a bridge support; 9. inclined bottom steel box girder; 31. a slide rail; 32. a large jack body; 100. pushing the construction device.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 to 3, the present utility model discloses an embodiment of a pushing construction device for an inclined bottom steel box girder, wherein the pushing construction device 100 comprises a support beam 1, two temporary buttresses 2 and a large jack assembly 3.
The support beam 1 is arranged along the forward bridge direction, two temporary buttresses 2 are vertically arranged on the top surface of the support beam 1, and the two temporary buttresses 2 are arranged at intervals. The top of the temporary buttress 2 is provided with a first wedge-shaped steel backing plate 4.
The large jack assembly 3 is vertically arranged between the two temporary buttresses 2 and can move along the forward bridge direction relative to the support beam 1. A second wedge-shaped steel backing plate 5 is arranged at the top of the large jack assembly 3. The top surfaces of the first wedge-shaped steel backing plate 4 and the second wedge-shaped steel backing plate 5 are matched with the inclined bottom plate of the inclined bottom steel box girder 9. Specifically, the top surfaces of the first wedge-shaped steel backing plate 4 and the second wedge-shaped steel backing plate 5 are inclined surfaces.
Compared with the prior art, the pushing construction device 100 does not need to avoid the position of the inclined bottom plate in the pushing construction process, the structure of the pushed inclined bottom steel box girder does not need to be reinforced in the middle part, and the inclined bottom steel box girder is reasonably stressed in the pushing process, so that the working efficiency of pushing construction is greatly improved, and the problem that walking pushing cannot be performed on the inclined bottom plate of the inclined bottom steel box girder in the prior art is effectively solved.
Further, the top surfaces of the first wedge-shaped steel backing plate 4 and the second wedge-shaped steel backing plate 5 are paved with rubber backing plates 6 for increasing friction force. The rubber backing plate 6 can greatly increase the friction force between the steel backing plate and the inclined bottom plate of the inclined bottom steel box girder, and realizes the conduction of internal force of the structure.
In one embodiment, a small jack 7 is also provided between the temporary buttress 2 and the first wedge-shaped steel pad 4. The small jack 7 can continuously correct the height of the temporary buttress according to the elevation after the bridge is formed. Specifically, when needed, the small jack 7 jacks up the inclined bottom steel box girder, and a shoveling material is added between the temporary buttress 2 and the first wedge-shaped steel backing plate 4, so that the inclined bottom steel box girder is prevented from being manually carried.
Further, an outer bearing platform 21 is circumferentially arranged at the top of the temporary buttress 2, an auxiliary platform 41 is circumferentially arranged on the first wedge-shaped steel backing plate 4, and the small jack 7 is arranged between the outer bearing platform 21 and the auxiliary platform 41. The bottom of the small jack 7 is fixed on the outer bearing platform 21, the top of the small jack is propped against the auxiliary platform 41, and the height of the inclined bottom steel box girder is lifted from the side surface of the temporary buttress 2.
Further, the large jack assembly 3 comprises a sliding rail 31 and more than one large jack body 32, the sliding rail 31 is arranged between the two temporary piers 2 along the forward bridge direction, and the bottom surface of the sliding rail 31 is fixed on the supporting beam 1. The bottom end of the large jack body 32 is slidably matched with the slide rail 31.
In the actual pushing process, the working steps of the pushing construction device are sequentially divided into jacking, pushing and falling, wherein jacking refers to jacking the inclined bottom steel box girder, so that an inclined bottom plate of the inclined bottom steel box girder is separated from the temporary buttress 2. The pushing means that the large jack body 32 slides along the forward bridge relative to the sliding rail 31. The falling of the roof refers to shortening of the large jack body 32 so that the sloping floor of the sloping bottom steel box girder is placed on the first wedge-shaped steel backing plate 4 of the temporary buttress 2.
Specifically, the number of the large jack bodies 32 is two, and the two large jack bodies 32 are connected into a whole through a fixed connecting rod. When sliding, the two large jack bodies 32 slide along the slide rail 31 at the same time.
As shown in fig. 1, the utility model also discloses an embodiment of a bridge construction structure, which comprises a plurality of bridge brackets 8, wherein the pushing construction device 100 is arranged at the top end of the bridge bracket 8 positioned below the side of the inclined bottom steel box girder 9, and the first wedge-shaped steel backing plate 4 and/or the second wedge-shaped steel backing plate 5 of the pushing construction device 100 are propped against the inclined bottom plate of the inclined bottom steel box girder 9.
Specifically, a conventional pushing device is arranged at the top end of the bridge bracket 8 positioned at the middle of the inclined bottom steel box girder 9. The pushing construction device 100 and the conventional pushing device are matched with each other, so that gradual pushing translation of the inclined bottom steel box girder 9 is realized.
With respect to the bridge construction structure, further, the top surfaces of the first wedge-shaped steel shim plate 4 and the second wedge-shaped steel shim plate 5 are each laid with a rubber shim plate 6 for increasing friction. The rubber backing plate 6 can greatly increase the friction force between the steel backing plate and the inclined bottom plate of the inclined bottom steel box girder, and realizes the conduction of internal force of the structure.
With respect to the bridge construction structure, in one embodiment, a small jack 7 is also provided between the temporary buttress 2 and the first wedge-shaped steel pad 4. The small jack 7 can continuously correct the height of the temporary buttress according to the elevation after the bridge is formed. Specifically, when needed, the small jack 7 jacks up the inclined bottom steel box girder, and a shoveling material is added between the temporary buttress 2 and the first wedge-shaped steel backing plate 4, so that the inclined bottom steel box girder is prevented from being manually carried.
Further, an outer bearing platform 21 is circumferentially arranged at the top of the temporary buttress 2, an auxiliary platform 41 is circumferentially arranged on the first wedge-shaped steel backing plate 4, and the small jack 7 is arranged between the outer bearing platform 21 and the auxiliary platform 41. The bottom of the small jack 7 is fixed on the outer bearing platform 21, the top of the small jack is propped against the auxiliary platform 41, and the height of the inclined bottom steel box girder is lifted from the side surface of the temporary buttress 2.
Regarding the bridge construction structure, further, the large jack assembly 3 includes a slide rail 31 and more than one large jack body 32, the slide rail 31 is disposed between the two temporary buttresses 2 along the forward bridge direction, and the bottom surface of the slide rail 31 is fixed on the support beam 1. The bottom end of the large jack body 32 is slidably matched with the slide rail 31.
In the actual pushing process, the working steps of the large jack assembly 3 are sequentially divided into jacking, pushing and falling, wherein jacking refers to jacking the inclined bottom steel box girder, so that an inclined bottom plate of the inclined bottom steel box girder is separated from the temporary buttress 2. The pushing means that the large jack body 32 slides along the forward bridge relative to the sliding rail 31. The falling of the roof refers to shortening of the large jack body 32 so that the sloping floor of the sloping bottom steel box girder is placed on the first wedge-shaped steel backing plate 4 of the temporary buttress 2.
Specifically, the number of the large jack bodies 32 is two, and the two large jack bodies 32 are connected into a whole through a fixed connecting rod. When sliding, the two large jack bodies 32 slide along the slide rail 31 at the same time.
According to the pushing construction device 100 and the bridge construction structure, the position of the inclined bottom plate is not required to be avoided in the pushing construction process, when the pushing construction device is used, the inclined bottom plate of the inclined bottom steel box girder falls on the front temporary buttress 2 and the rear temporary buttress 2, when the pushing construction is required, the middle large jack assembly 3 jacks up the inclined bottom steel box girder after jacking, the inclined bottom plate of the inclined bottom steel box girder and the temporary buttress 2 are separated, the first wedge-shaped steel base plate 4 and the second wedge-shaped steel base plate 5 adapt to the inclined bottom plate of the inclined bottom steel box girder, and the friction force between the wedge-shaped steel cushion block and the inclined bottom plate is increased by the rubber base plate 6. Compared with the prior art, the pushed inclined bottom steel box girder does not need to be structurally reinforced at the middle part, the steel girder pushing reinforcement measures are simplified, in the pushing process, the stress of the inclined bottom steel box girder is reasonable, the site operation difficulty is reduced, the working efficiency of pushing construction is greatly improved, the engineering quality is improved, the construction cost is reduced, and the problem that walking pushing cannot be carried out on an inclined bottom plate of the inclined bottom steel box girder in the prior art is effectively solved.
The working principle of the pushing construction device of the utility model is as follows:
and (3) a jacking step: the large jack assembly 3 pushes the inclined bottom steel box girder 9 upwards, so that an inclined bottom plate of the inclined bottom steel box girder 9 is separated from the first wedge-shaped steel backing plate 4;
the pushing step comprises the following steps: the large jack assembly 3 drives the inclined bottom steel box girder 9 to move along the forward bridge direction relative to the supporting girder 1;
a step of roof falling: the large jack assembly 3 is retracted downwards so that the sloping floor of the sloping floor steel box girder 9 falls onto the first wedge steel backing plate 4.
The working principle is divided into jacking, pushing and falling in sequence, wherein the jacking is to jack up the inclined bottom steel box girder, so that the inclined bottom plate of the inclined bottom steel box girder is separated from the temporary buttress 2. The large jack body 32 slides along the forward bridge direction relative to the sliding rail 31. The landing is the shortening of the large jack body 32 so that the sloping floor of the sloping bottom steel box girder is placed on the first wedge-shaped steel backing plate 4 of the temporary buttress 2.
Specifically, the plurality of bridge supports 8 are arranged at intervals along the forward direction of the bridge, as shown in fig. 1, the pushing construction device 100 can enable the inclined bottom steel box girder to move for a certain distance along the forward direction of the bridge, the next group of pushing construction devices continue to enable the inclined bottom steel box girder to move for a certain distance along the forward direction of the bridge, the pushing construction devices gradually move, walking pushing is achieved, and the inclined bottom steel box girder is continuously pushed forwards until the inclined bottom steel box girder reaches a designated position.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present utility model, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The pushing construction device for the inclined bottom steel box girder is characterized by comprising:
a supporting beam (1) arranged along the forward bridge direction;
two temporary buttresses (2) vertically arranged on the top surface of the supporting beam (1), and a first wedge-shaped steel backing plate (4) is arranged on the top of each temporary buttress;
the vertical large jack assembly (3) that sets up in the middle of two interim buttress (2) and can follow bridge to removal relative supporting beam (1), its top sets up second wedge steel backing plate (5), the sloping plate of sloping bottom steel case roof beam (9) is all matchd to the top surface of first wedge steel backing plate (4) and second wedge steel backing plate (5).
2. The pushing construction device for the inclined bottom steel box girder according to claim 1, wherein: rubber backing plates (6) for increasing friction force are paved on the top surfaces of the first wedge-shaped steel backing plate (4) and the second wedge-shaped steel backing plate (5).
3. The pushing construction device for the inclined bottom steel box girder according to claim 1, wherein: a small jack (7) is further arranged between the temporary buttress (2) and the first wedge-shaped steel base plate (4).
4. A pushing construction device for inclined bottom steel box girders as set forth in claim 3, wherein: the top circumference of interim buttress (2) sets up outer cushion cap (21), the circumference of first wedge steel backing plate (4) sets up auxiliary stand (41), little jack (7) set up between outer cushion cap (21) and auxiliary stand (41).
5. The pushing construction device for the inclined bottom steel box girder according to claim 1, wherein: the large jack assembly (3) comprises a sliding rail (31) and more than one large jack body (32), the sliding rail (31) is arranged between two temporary buttresses (2) along the forward bridge direction, and the bottom surface of the sliding rail (31) is fixed on the supporting beam (1); the bottom end of the large jack body (32) is slidably matched with the sliding rail (31).
6. The pushing construction device for the inclined bottom steel box girder according to claim 5, wherein: the number of the large jack bodies (32) is two, and the two large jack bodies (32) are connected into a whole through the fixed connecting rod.
7. The bridge construction structure is characterized by comprising a plurality of bridge supports (8), wherein the pushing construction device (100) as claimed in claim 1 is arranged at the top end of the bridge supports (8) below the side of the inclined bottom steel box girder (9), and the first wedge-shaped steel backing plate (4) and/or the second wedge-shaped steel backing plate (5) of the pushing construction device (100) are/is propped against the inclined bottom plate of the inclined bottom steel box girder (9).
8. A bridge construction structure according to claim 7, wherein: rubber backing plates (6) for increasing friction force are paved on the top surfaces of the first wedge-shaped steel backing plate (4) and the second wedge-shaped steel backing plate (5).
9. A bridge construction structure according to claim 7, wherein: a small jack (7) is further arranged between the temporary buttress (2) and the first wedge-shaped steel base plate (4); the top circumference of interim buttress (2) sets up outer cushion cap (21), the circumference of first wedge steel backing plate (4) sets up auxiliary stand (41), little jack (7) set up between outer cushion cap (21) and auxiliary stand (41).
10. A bridge construction structure according to claim 7, wherein: the large jack assembly (3) comprises a sliding rail (31) and more than one large jack body (32), the sliding rail (31) is arranged between two temporary buttresses (2) along the forward bridge direction, and the bottom surface of the sliding rail (31) is fixed on the supporting beam (1); the bottom end of the large jack body (32) is slidably matched with the sliding rail (31); the number of the large jack bodies (32) is two, and the two large jack bodies (32) are connected into a whole through the fixed connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321489617.5U CN219992219U (en) | 2023-06-12 | 2023-06-12 | Pushing construction device for inclined bottom steel box girder and bridge construction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321489617.5U CN219992219U (en) | 2023-06-12 | 2023-06-12 | Pushing construction device for inclined bottom steel box girder and bridge construction structure |
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| Publication Number | Publication Date |
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| CN219992219U true CN219992219U (en) | 2023-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321489617.5U Active CN219992219U (en) | 2023-06-12 | 2023-06-12 | Pushing construction device for inclined bottom steel box girder and bridge construction structure |
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| Country | Link |
|---|---|
| CN (1) | CN219992219U (en) |
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2023
- 2023-06-12 CN CN202321489617.5U patent/CN219992219U/en active Active
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