CN102477738A - Device for supporting bridge pile after removal of surface concrete - Google Patents
Device for supporting bridge pile after removal of surface concrete Download PDFInfo
- Publication number
- CN102477738A CN102477738A CN2010105619113A CN201010561911A CN102477738A CN 102477738 A CN102477738 A CN 102477738A CN 2010105619113 A CN2010105619113 A CN 2010105619113A CN 201010561911 A CN201010561911 A CN 201010561911A CN 102477738 A CN102477738 A CN 102477738A
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- China
- Prior art keywords
- grid
- removal
- bridge pier
- bridge pile
- top layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a device for supporting a bridge pile after removal of surface concrete. The device is composed of a grid, an L-shaped steel bar and a longitudinal connecting bar, wherein the grid is welded with a main bar of the grid through the L-shaped steel bar, and the longitudinal connecting bar is fixedly connected at the arch part of the grid. The device disclosed by the invention has a simple structure, is convenient to use, and can be used for effectively supporting a bridge pile after roughening so as to ensure the carrying capacity of a pile foundation.
Description
Technical field:
The invention belongs to a kind of construction implement, the bearing device behind particularly a kind of bridge pier top layer concrete chisel removal that in the metro engineering pile foundation underpinning construction, uses.
Background technology:
The situation of intersecting with bridge, channel establishment generation space in the present municipal underground construction or being close to away is very many; The schemes that great majority adopt are to tear down and reconstruct existing bridge, logical facility, and this method work progress complicacy, poor stability, investment are greatly and have a strong impact on surrounding environment.Need at first pedestrian overcrossing to be carried out rest and carry out the ground reinforcing, carry out then reinforcing in the hole, and the first step of reinforcing in the hole is exactly the concrete that will cut the bridge pier top layer with steel pipe scaffold; But because the excavation of the tunnel earthwork; Pile foundation is exposed, and the suffered frictional force of stake reduces, and causes the pile foundation bearing capacity to seriously undermine; Therefore bridge pier is at every turn through just carrying out support behind the concrete chisel removal of top layer, with the bearing capacity of card pile foundation.
Summary of the invention:
The object of the invention just is to provide the bearing device behind the concrete chisel removal of a kind of bridge pier top layer, and this apparatus structure is simple, easy to use, can be effectively to carrying out support through the bridge pier behind the cutter hair, to guarantee the bearing capacity of pile foundation.
As above design, technical scheme of the present invention is: the bearing device behind the concrete chisel removal of a kind of bridge pier top layer is characterized in that: be made up of grid, " L " shape reinforcing bar and vertical dowel; Grid is connected with vertical dowel in the grid arch simultaneously through " L " shape reinforcing bar and the welding of grid master muscle.
The diameter of above-mentioned " L " shape reinforcing bar adopts φ 22.
The present invention is simple in structure, easy to use, can be effectively to carrying out support through the bridge pier behind the cutter hair, to guarantee the bearing capacity of pile foundation.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A sectional drawing of Fig. 1.
The specific embodiment:
As shown in the figure: the bearing device behind the concrete chisel removal of a kind of bridge pier top layer, form by grid 1, φ 22 " L " shape reinforcing bar 2 and vertical dowel 3.Grid is through " L " shape reinforcing bar and the welding of grid master muscle; Simultaneously being connected with vertical dowel in the grid arch encrypts; Encrypt dowel and form the longitudinal beam body, be transferred on the Continuous Grid-structures pile foundation is stressed, form continuous rigid structures by grid pile foundation is underpined.
Use of the present invention is: if certain section tunnel adopts the construction of " CD " method, cubic metre of earth arc excavation of topping bar is reserved core soil, sharply descends because of soil excavation pile foundation friction bearing capacity for fear of bridge pier, must guarantee core soil length 2～3m simultaneously.When last section soil excavation to bridge pier place; According to field condition, at first hang net and spray the thick concrete of 4cm, then vault excavation outline line scope pile body top layer concrete is cut a hole hair; Make and expose bridge pier master muscle; And the timely upright grid 1 of frame, with φ 22 " L " shaped steel muscle 2 (two edge lengths are not less than 10d) bridge pier master muscle and this Pin grid master's muscle and last Pin grid master muscle, vertical dowel 3 being welded, pneumatically placed concrete seals.
Claims (2)
1. the bearing device behind the bridge pier top layer concrete chisel removal is characterized in that: be made up of grid, " L " shape reinforcing bar and vertical dowel; Grid is connected with vertical dowel in the grid arch simultaneously through " L " shape reinforcing bar and the welding of grid master muscle.
2. the bearing device behind the concrete chisel removal of bridge pier according to claim 1 top layer is characterized in that: the diameter of above-mentioned " L " shape reinforcing bar adopts φ 22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105619113A CN102477738A (en) | 2010-11-25 | 2010-11-25 | Device for supporting bridge pile after removal of surface concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105619113A CN102477738A (en) | 2010-11-25 | 2010-11-25 | Device for supporting bridge pile after removal of surface concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102477738A true CN102477738A (en) | 2012-05-30 |
Family
ID=46090509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105619113A Pending CN102477738A (en) | 2010-11-25 | 2010-11-25 | Device for supporting bridge pile after removal of surface concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102477738A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61109826A (en) * | 1984-11-02 | 1986-05-28 | Nikken Sekkei:Kk | Reinforcing metal fitting for pile-foundation connection |
| CN101187210A (en) * | 2007-10-17 | 2008-05-28 | 中铁十八局集团有限公司 | Metro engineering pile foundation underpinning construction method |
| CN201915402U (en) * | 2010-11-25 | 2011-08-03 | 中铁十八局集团有限公司 | Supporting device of bridge pier with concrete on surface layer being chiseled off |
-
2010
- 2010-11-25 CN CN2010105619113A patent/CN102477738A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61109826A (en) * | 1984-11-02 | 1986-05-28 | Nikken Sekkei:Kk | Reinforcing metal fitting for pile-foundation connection |
| CN101187210A (en) * | 2007-10-17 | 2008-05-28 | 中铁十八局集团有限公司 | Metro engineering pile foundation underpinning construction method |
| CN201915402U (en) * | 2010-11-25 | 2011-08-03 | 中铁十八局集团有限公司 | Supporting device of bridge pier with concrete on surface layer being chiseled off |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120530 |