CN209873548U - Box girder end part structure convenient for pier mounting - Google Patents
Box girder end part structure convenient for pier mounting Download PDFInfo
- Publication number
- CN209873548U CN209873548U CN201920390536.7U CN201920390536U CN209873548U CN 209873548 U CN209873548 U CN 209873548U CN 201920390536 U CN201920390536 U CN 201920390536U CN 209873548 U CN209873548 U CN 209873548U
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- China
- Prior art keywords
- box girder
- temporary support
- girder
- supporting
- end part
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- Withdrawn - After Issue
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- 238000005096 rolling process Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 5
- 238000003892 spreading Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to a bridge construction technical field specifically indicates a case roof beam tip structure convenient to pier. Comprises a box girder and a guide girder; the nose girder is for fixing the guide structure that end surface is higher than the lower terminal surface of case roof beam under the case beam-ends portion, its characterized in that: the temporary support structure is movably connected to the end part of the box girder; the temporary support structure can be collected and expanded from the end part of the box girder to support the temporary support on the pier stud when the end part of the box girder moves to be close to the pier stud, and the lower end surface of the temporary support structure is flush with the lower end surface of the box girder when the temporary support structure is expanded. The utility model discloses an increase interim bearing structure at case roof beam tip, form the leading structure of mound on the case roof beam before the mound on the case roof beam, the mound is gone up fast to the case roof beam of being convenient for, and whole interim bearing structure is simple, and convenient operation can used repeatedly, has simplified the mound process flow of going up, has very big spreading value.
Description
Technical Field
The utility model relates to a bridge construction technical field specifically indicates a case roof beam tip structure convenient to pier.
Background
Incremental launching construction is a common bridge construction technology, and in incremental launching construction, a guide beam is often required to be arranged for increasing the arrangement distance of temporary piers and reducing the stress of box girders. Because the span of the temporary pier is large, the rigidity of the guide beam is small, and the front section of the guide beam is greatly downwarped. The upper pier of the guide beam becomes a serious difficulty in the design of the guide beam in the pushing process design. Like the chinese utility model patent of a name "a continuous steel case roof beam is led to walking top and crosses mound composite set" of patent number "CN 201620903403.1, this patent has introduced a nose girder structure, including tertiary inverted ladder type nose girder, walking top thruster and cushion, walking top thruster sets up and corresponds the position at tertiary inverted ladder type nose girder below second level ladder, the cushion corresponds the position including setting up at tertiary inverted ladder type nose girder below first level ladder respectively, height-adjustable's first cushion corresponds the position with setting up at tertiary inverted ladder type nose girder below third level ladder, height-adjustable's second cushion, be provided with screw jack between first cushion and the tertiary inverted ladder type nose girder. The scheme adopts a combined structure of the inverted stepped guide beam and the screw jack, and can ensure that the front end of the three-level inverted stepped guide beam stably passes through the pier under the adverse working condition of generating downwarp due to the dead weight and linear comprehensive influence. However, the guide beam designed into the ladder shape needs to be provided with the polytetrafluoroethylene sliding plate guide beam upper pier device on the temporary pier, the device is complex in structure, large in manufacturing difficulty and inconvenient to operate, and the guide beam cannot smoothly go up the pier for a pushing system with large downwarping.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects of the prior art and providing a box girder end structure convenient for pier installation.
The technical scheme of the utility model is that: a box girder end structure convenient for pier mounting comprises a box girder and a guide girder; the nose girder is for fixing the guide structure that end surface is higher than the lower terminal surface of case roof beam under the case beam-ends portion, its characterized in that: the temporary support structure is movably connected to the end part of the box girder; the temporary support structure can be collected and expanded from the end part of the box girder to support the temporary support on the pier stud when the end part of the box girder moves to be close to the pier stud, and the lower end surface of the temporary support structure is flush with the lower end surface of the box girder when the temporary support structure is expanded.
And one end of the temporary support structure can be rotatably hinged to the end part of the box girder around a horizontal axis, and the other end of the temporary support structure is supported at the upper end of the pier stud when being unfolded.
Further said temporary support structure comprises support beams; one end of the supporting beam is rotatably hinged to the end part of the box girder through a bailey pin penetrating through the box girder, the other end of the supporting beam is supported at the upper end of the pier stud when the supporting beam is unfolded, and the lower end face of the supporting beam is flush with the lower end face of the box girder when the supporting beam is unfolded.
The temporary supporting structure further comprises a diagonal brace; when the supporting beam is unfolded, one end of the inclined strut is fixed at the end part of the box girder, and the other end of the inclined strut is fixed on the supporting beam.
The device further comprises a sliding device arranged on the pier stud; the sliding device comprises a bottom plate fixed at the upper end of the pier stud and a plurality of groups of rolling structures arranged on the bottom plate at intervals along the bridge direction, and each group of rolling structures comprises two fixed bosses arranged at intervals and a rotatable rotating shaft arranged between the two fixed bosses; the temporary support structure is supported on the rotating shaft when being unfolded.
A box girder pier mounting method is characterized in that: and pushing the box girder to advance to the guide beam along the bridge direction until the guide beam passes through the pier stud of the pier to be erected, jacking the guide beam on one side of the pier stud opposite to the box girder to enable the box girder to ascend to the lower end face higher than the upper end of the pier stud, unfolding the temporary supporting structure to enable the supporting structure to be supported at the upper end of the pier stud, and pushing the box girder to advance along the bridge direction until the box girder moves onto the pier stud to finish the pier erecting process.
The further method for unfolding the temporary support structure comprises the following steps: and rotating and lowering the support beam in the temporary support structure onto the pier stud, and supporting the inclined strut in the temporary support structure on the support beam and the box girder end part to fix the support beam.
The utility model discloses an increase interim bearing structure at case roof beam tip, form the leading structure of mound on the case roof beam before the mound on the case roof beam, the mound is gone up fast to the case roof beam of being convenient for, and whole interim bearing structure is simple, and convenient operation can used repeatedly, has simplified the mound process flow of going up, has very big spreading value.
Drawings
FIG. 1: a structural schematic diagram of the support beam when unfolded;
FIG. 2: a schematic structural diagram of the support beam when being bundled;
wherein: 1-box girder; 2, a guide beam; 3, supporting the beam; 4-bailey pins; 5, bracing; 6-pier stud; 7-a bottom plate; 8, fixing a boss; 9-a rotating shaft; 10-jacking jack.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1-2, in the present embodiment, a guide beam 2 is disposed at an end of a box girder 1, and the guide beam 2 is a conventional guide structure, which is fixed at the end of the box girder 1 and arranged along a bridge direction, and a lower end surface of the guide beam 2 is higher than a lower end surface of the box girder 1.
In order to facilitate the upper pier of the box girder 1, a temporary supporting structure is arranged at the end of the box girder 1 in the embodiment, as shown in fig. 1-2, the temporary supporting structure is below the guide beam 2 and comprises a supporting beam 3, one end of the supporting beam 3 is rotatably hinged to the end of the box girder 1 through a bailey pin 4 penetrating through the box girder 1, the other end of the supporting beam is supported at the upper end of a pier stud 6 when being unfolded, and the lower end face of the supporting beam 3 is flush with the lower end face of the box girder 1 when being unfolded. The temporary support structure further comprises a diagonal brace 5, wherein one end of the diagonal brace 5 is fixed at the end part of the box girder 1, and the other end is fixed on the support girder 3 when the support girder 3 is unfolded.
In practical applications, the support beam 3 may be deployed by extending or other means, as long as the purpose of the present embodiment is achieved.
In order to facilitate quick forward-bridge sliding, the sliding device is arranged on the pier stud 6 in the embodiment, as shown in fig. 1, the sliding device comprises a bottom plate 7 fixed at the upper end of the pier stud 6 and a plurality of groups of rolling structures arranged on the bottom plate 7 at intervals along the forward-bridge direction, each group of rolling structures comprises two fixed bosses 8 arranged at intervals and a rotatable rotating shaft 9 arranged between the two fixed bosses 8, and the temporary supporting structure is supported on the rotating shaft 9 when being unfolded.
The pier mounting process flow in the embodiment is as follows: 1. pushing the box girder 1 to move along the forward direction until the guide girder 2 passes through a pier stud 6 of the pier to be erected;
2. arranging a jacking jack 10 on one side of the pier stud 6 opposite to the box girder 1, jacking the guide girder 2 through the jacking jack 10, and enabling the guide girder 2 to be communicated with the box girder 1 to vertically move until the lower end face of the box girder 1 is not lower than the rotating shaft 9, as shown in fig. 2;
3. rotating the support beam 3 below the support beam 3 to the rotating shaft 9, and then fixedly supporting the support beam 3 through the inclined strut 5, as shown in fig. 1;
4. and pushing the box girder 1 to move along the bridge direction until the box girder 1 completely moves to the pier stud 6, thereby completing the pier loading process.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A box girder end structure convenient for pier mounting comprises a box girder (1) and a guide beam (2); guide beam (2) are for fixing the guide structure who is higher than the lower terminal surface of case roof beam (1) at case roof beam (1) tip lower terminal surface, its characterized in that: the temporary supporting structure is movably connected to the end part of the box girder (1); the temporary support structure is a temporary support which can be folded and supported on the pier stud (6) from the end part of the box girder (1) when the end part of the box girder (1) moves to be close to the pier stud (6), and the lower end face of the temporary support structure is flush with the lower end face of the box girder (1) when the temporary support structure is unfolded.
2. A box girder end structure for facilitating upper erection according to claim 1, wherein: one end of the temporary supporting structure can be hinged to the end part of the box girder (1) in a manner of rotating around a horizontal axis, and the other end of the temporary supporting structure is supported at the upper end of the pier stud (6) when being unfolded.
3. A box girder end structure for facilitating upper erection according to claim 2, wherein: the temporary support structure comprises a support beam (3); one end of the supporting beam (3) is rotatably hinged to the end part of the box girder (1) through a bailey pin (4) penetrating through the box girder (1), the other end of the supporting beam is supported at the upper end of a pier stud (6) when the supporting beam is unfolded, and the lower end face of the supporting beam (3) is flush with the lower end face of the box girder (1) when the supporting beam is unfolded.
4. A box girder end structure for facilitating upper erection according to claim 3, wherein: the temporary support structure further comprises a diagonal brace (5); and one end of the inclined strut (5) is fixed at the end part of the box girder (1) when the supporting girder (3) is unfolded, and the other end of the inclined strut is fixed on the supporting girder (3).
5. A box girder end structure for facilitating upper erection according to claim 1, wherein: the device also comprises a sliding device arranged on the pier stud (6); the sliding device comprises a bottom plate (7) fixed at the upper end of the pier stud (6) and a plurality of groups of rolling structures arranged on the bottom plate (7) at intervals along the bridge direction, wherein each group of rolling structures comprises two fixed bosses (8) arranged at intervals and a rotatable rotating shaft (9) arranged between the two fixed bosses (8); the temporary supporting structure is supported on the rotating shaft (9) when being unfolded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390536.7U CN209873548U (en) | 2019-03-26 | 2019-03-26 | Box girder end part structure convenient for pier mounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390536.7U CN209873548U (en) | 2019-03-26 | 2019-03-26 | Box girder end part structure convenient for pier mounting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209873548U true CN209873548U (en) | 2019-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920390536.7U Withdrawn - After Issue CN209873548U (en) | 2019-03-26 | 2019-03-26 | Box girder end part structure convenient for pier mounting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209873548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868722A (en) * | 2019-03-26 | 2019-06-11 | 中交武汉港湾工程设计研究院有限公司 | A kind of pier method on box beam end construction and box beam convenient for upper pier |
-
2019
- 2019-03-26 CN CN201920390536.7U patent/CN209873548U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868722A (en) * | 2019-03-26 | 2019-06-11 | 中交武汉港湾工程设计研究院有限公司 | A kind of pier method on box beam end construction and box beam convenient for upper pier |
| CN109868722B (en) * | 2019-03-26 | 2023-12-12 | 中交武汉港湾工程设计研究院有限公司 | Box girder end structure convenient for pier loading and box girder pier loading method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191231 Effective date of abandoning: 20231212 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20191231 Effective date of abandoning: 20231212 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |