CN201394887Y - Dedicated hole-making rubber tube for high-iron prefabricated bridge - Google Patents
Dedicated hole-making rubber tube for high-iron prefabricated bridge Download PDFInfo
- Publication number
- CN201394887Y CN201394887Y CN200920089430XU CN200920089430U CN201394887Y CN 201394887 Y CN201394887 Y CN 201394887Y CN 200920089430X U CN200920089430X U CN 200920089430XU CN 200920089430 U CN200920089430 U CN 200920089430U CN 201394887 Y CN201394887 Y CN 201394887Y
- Authority
- CN
- China
- Prior art keywords
- rubber tube
- hole
- sebific duct
- prefabricated bridge
- making
- Prior art date
- 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.)
- Expired - Fee Related
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model relates to a dedicated hole-making rubber tube for a high-iron prefabricated bridge. The inner hole of the prefabricated bridge is a square hole, so that a certain gap is reserved between the inner wall of the rubber tube and a steel strand when a rubber tube is pulled; vacuum is difficult to from in the reserved opening channel to enable the rubber tube to normally deform and smoothly come out of the hole when stressed, thereby thoroughly solving the problems that the service life hole-making rubber tube is influenced since the prior hole-making tube can form vacuum easily.
Description
Technical field
The utility model is specifically related to the special-purpose drilling sebific duct of a kind of high ferro precast bridge.
Background technology
In the technology of present railway prefabricated bridge, " preformed hole " about prestress wire, two kinds of ways are arranged: a kind of is the bellows that turns to steel coil strip, directly prefabricated in pontic, but bellows is disposable input, can't reclaim, the fund waste is big, and in concrete placement, vibrating head bumps brokenly bellows easily and causes spillage, thereby the duct is stopped up; Another kind is prefabricated to Liang Tizhong the drilling sebific duct, after the concrete initial solidification finishes, will bundle good rubber tube with the hoist engine steel wire rope and pull out.These the two kinds of employed drilling sebific duct of way endoporus are circular hole (general diameter of bore is 25mm), sebific duct behind the steel strand wires that penetrate (diameter is 15.24mm) (purpose that penetrates steel strand wires be for fear of the drilling sebific duct when colligation is in the bridge reinforcement cage, avoid the sebific duct bending, play and guarantee that the sebific duct track is level and smooth), in the process of drilling sebific duct withdrawing, external diameter attenuated when sebific duct portalled, also corresponding the attenuating of endoporus of while sebific duct, steel strand wires and sebific duct inwall are closely sticked together, make easily and produce vacuum in the preformed hole, strengthen the resistance of tube drawing, thereby influence the withdrawing effect, shorten the service life of drilling sebific duct.
Summary of the invention
The utility model provides the special-purpose drilling sebific duct of a kind of high ferro precast bridge that can reduce the tube drawing resistance, increase the service life.
The technical solution adopted in the utility model is: the special-purpose drilling sebific duct of a kind of high ferro precast bridge, the endoporus of described drilling sebific duct is a square opening.
The beneficial effects of the utility model are: the endoporus of drilling sebific duct is a square opening, can make sebific duct by withdrawing the time, leave certain space between inwall and the steel strand wires, reserving hole channel is difficult for forming vacuum, assurance sebific duct stressed back normal deformation is also portalled smoothly, thoroughly solve intrinsic drilling pipe and easily produced vacuum, influenced the problem in its life-span.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, the endoporus of drilling sebific duct 1 is a square opening 2, can make sebific duct 1 leave certain space between inwall and the steel strand wires like this by withdrawing the time, and reserving hole channel is difficult for forming vacuum, guarantee sebific duct stressed back normal deformation and portal the service life of prolongation drilling sebific duct 1 smoothly.
Claims (1)
1, the special-purpose drilling sebific duct of a kind of high ferro precast bridge, it is characterized in that: the endoporus of described drilling sebific duct is a square opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920089430XU CN201394887Y (en) | 2009-04-07 | 2009-04-07 | Dedicated hole-making rubber tube for high-iron prefabricated bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920089430XU CN201394887Y (en) | 2009-04-07 | 2009-04-07 | Dedicated hole-making rubber tube for high-iron prefabricated bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201394887Y true CN201394887Y (en) | 2010-02-03 |
Family
ID=41617383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920089430XU Expired - Fee Related CN201394887Y (en) | 2009-04-07 | 2009-04-07 | Dedicated hole-making rubber tube for high-iron prefabricated bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201394887Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773947A (en) * | 2019-03-01 | 2019-05-21 | 中交第二航务工程勘察设计院有限公司 | The folder steel wire rubber strip reeled tubing and application method of a kind of presstressed reinforcing steel hole pore-forming |
-
2009
- 2009-04-07 CN CN200920089430XU patent/CN201394887Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773947A (en) * | 2019-03-01 | 2019-05-21 | 中交第二航务工程勘察设计院有限公司 | The folder steel wire rubber strip reeled tubing and application method of a kind of presstressed reinforcing steel hole pore-forming |
| CN109773947B (en) * | 2019-03-01 | 2023-09-22 | 中交第二航务工程勘察设计院有限公司 | Steel wire rubber strip winding pipe with prestressed tendon hole forming function and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20170407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |