CN204370486U - Bridge pier underpinning device - Google Patents
Bridge pier underpinning device Download PDFInfo
- Publication number
- CN204370486U CN204370486U CN201420817453.9U CN201420817453U CN204370486U CN 204370486 U CN204370486 U CN 204370486U CN 201420817453 U CN201420817453 U CN 201420817453U CN 204370486 U CN204370486 U CN 204370486U
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- bridge pier
- tunnel
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Abstract
The utility model discloses a kind of bridge pier underpinning device, solve the equipment investment existed when bridge pile foundation is blocked large, the problem of long in time limit and poor stability.Comprise bridge pier (1), bridge pier (1) is provided with bridge pier bent cap (2), at pre-cut bridge pier (3) place through there being construction subway tunnel (4), the vault of construction subway tunnel (4) is provided with soil stabilization layer (6), the top of soil stabilization layer (6) is provided with underpinned pile (5), two underpinned piles (5) are the both sides being separately positioned on pre-cut bridge pier (3), the stake top of underpinned pile (5) by jack together with bridge pier bent cap (2) apical grafting.The utility model construction method is simple and practical, ensure that existing bridge in constructing tunnel process and construction terminate after safety and stability.
Description
Technical field
The utility model relates to a kind of underpinning device of existing bridge pier, and particularly a kind of subway work tunnel is through the underpinning device to pre-cut bridge pier during existing bridge pile foundation.
Background technology
Construct below existing bridge subway tunnel time, when tunnel construction tunnel face runs into existing bridge pile foundation, need block bridge pile foundation, to ensure carrying out continuously of construction of tunnel.In constructing tunnel process, block the stability that existing pile foundation can have influence on existing bridge, need reinforce bridge pile foundation.General reinforcement means installs temporary support on the ground on pre-cut pile foundation side, after constructing tunnel completes, then removed.It is large to there is equipment investment in this construction method, and the shortcoming of long in time limit and poor stability, in addition, after constructing tunnel completes, leave potential safety hazard also can to the stability of bridge.
Summary of the invention
The utility model provides a kind of bridge pier underpinning device, solves the equipment investment existed when blocking bridge pile foundation large, the technical problem of long in time limit and poor stability.
The utility model solves above technical problem by the following technical programs:
A kind of bridge pier underpinning device, comprise bridge pier, bridge pier is provided with bridge pier bent cap, at pre-cut bridge pier place through there being construction subway tunnel, the vault of construction subway tunnel is provided with soil stabilization layer, above soil stabilization layer, be provided with underpinned pile, two underpinned piles are the both sides being separately positioned on pre-cut bridge pier, the stake top of underpinned pile by jack together with bridge pier bent cap apical grafting.
The side of the pre-cut bridge pier in construction subway tunnel is provided with tunnel, side and just serves as a contrast bracing frame, and the opposite side of the pre-cut bridge pier in construction subway tunnel is provided with opposite side tunnel and just serves as a contrast bracing frame.
The utility model solves construction subway tunnel through the problem easily causing existing bridge instability during existing bridge pile foundation, and construction method is simple and practical, ensure that existing bridge in constructing tunnel process and construction terminate after safety and stability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail:
A kind of bridge pier underpinning device, comprise bridge pier 1, bridge pier 1 is provided with bridge pier bent cap 2, at pre-cut bridge pier 3 place through there being construction subway tunnel 4, the vault of construction subway tunnel 4 is provided with soil stabilization layer 6, above soil stabilization layer 6, be provided with underpinned pile 5, two underpinned piles 5 are the both sides being separately positioned on pre-cut bridge pier 3, the stake top of underpinned pile 5 by jack together with bridge pier bent cap 2 apical grafting.Underpinned pile 5 is steel concrete placing stakes.
The side of the pre-cut bridge pier 3 in construction subway tunnel 4 is provided with tunnel, side and just serves as a contrast bracing frame 7, and the opposite side of the pre-cut bridge pier 3 in construction subway tunnel 4 is provided with opposite side tunnel and just serves as a contrast bracing frame 8.By the supporting of the initial stage lining in construction subway tunnel 4 is ensured follow-up pre-cut stake is blocked time have the stable of bridge.
Claims (2)
1. a bridge pier underpinning device, comprise bridge pier (1), bridge pier (1) is provided with bridge pier bent cap (2), it is characterized in that, at pre-cut bridge pier (3) place through there being construction subway tunnel (4), the vault of construction subway tunnel (4) is provided with soil stabilization layer (6), the top of soil stabilization layer (6) is provided with underpinned pile (5), two underpinned piles (5) are the both sides being separately positioned on pre-cut bridge pier (3), the stake top of underpinned pile (5) by jack together with bridge pier bent cap (2) apical grafting.
2. a kind of bridge pier underpinning device according to claim 1, it is characterized in that, the side of the pre-cut bridge pier (3) in construction subway tunnel (4) is provided with tunnel, side and just serves as a contrast bracing frame (7), and the opposite side of the pre-cut bridge pier (3) in construction subway tunnel (4) is provided with opposite side tunnel and just serves as a contrast bracing frame (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420817453.9U CN204370486U (en) | 2014-12-22 | 2014-12-22 | Bridge pier underpinning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420817453.9U CN204370486U (en) | 2014-12-22 | 2014-12-22 | Bridge pier underpinning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204370486U true CN204370486U (en) | 2015-06-03 |
Family
ID=53326718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420817453.9U Active CN204370486U (en) | 2014-12-22 | 2014-12-22 | Bridge pier underpinning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204370486U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019075770A1 (en) * | 2017-10-17 | 2019-04-25 | 青岛静力工程股份有限公司 | Inner arched underpinning beam device |
| CN109914456A (en) * | 2019-03-20 | 2019-06-21 | 广州市市政工程设计研究总院有限公司 | A kind of bridge and subway tunnel adjoin newly-built or with design and construction method when building |
| CN110847206A (en) * | 2019-11-14 | 2020-02-28 | 中建八局轨道交通建设有限公司 | Construction method for newly-built subway tunnel to penetrate existing bridge piles |
| CN111254843A (en) * | 2020-01-21 | 2020-06-09 | 南京铁道职业技术学院 | Bridge pile foundation uplifting structure and construction method thereof |
-
2014
- 2014-12-22 CN CN201420817453.9U patent/CN204370486U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019075770A1 (en) * | 2017-10-17 | 2019-04-25 | 青岛静力工程股份有限公司 | Inner arched underpinning beam device |
| CN109914456A (en) * | 2019-03-20 | 2019-06-21 | 广州市市政工程设计研究总院有限公司 | A kind of bridge and subway tunnel adjoin newly-built or with design and construction method when building |
| CN110847206A (en) * | 2019-11-14 | 2020-02-28 | 中建八局轨道交通建设有限公司 | Construction method for newly-built subway tunnel to penetrate existing bridge piles |
| CN110847206B (en) * | 2019-11-14 | 2021-03-12 | 中建八局轨道交通建设有限公司 | Construction method for newly-built subway tunnel to penetrate existing bridge piles |
| CN111254843A (en) * | 2020-01-21 | 2020-06-09 | 南京铁道职业技术学院 | Bridge pile foundation uplifting structure and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |