CN201459718U - Flexible pull rod for construction bearing platform - Google Patents
Flexible pull rod for construction bearing platform Download PDFInfo
- Publication number
- CN201459718U CN201459718U CN2009201089712U CN200920108971U CN201459718U CN 201459718 U CN201459718 U CN 201459718U CN 2009201089712 U CN2009201089712 U CN 2009201089712U CN 200920108971 U CN200920108971 U CN 200920108971U CN 201459718 U CN201459718 U CN 201459718U
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- CN
- China
- Prior art keywords
- jackscrew
- draw bar
- collar
- flexible draw
- pull rod
- 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 - Lifetime
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Abstract
The utility model relates to a flexible pull rod for a construction bearing platform, which comprises the flexible pull rod, a template spacer and an end part fixing device. The flexible pull rod is characterized in that the flexible pull rod is a steel strand; the template spacer is a steel plate; the end part fixing device comprises a fixture, a jackscrew and a sleeving ring, wherein the fixture is arranged on the outermost side of the end part of the flexible pull rod and comprises an anchor ring and a clamping piece; a hole is formed in the middle of the jackscrew and a nut is assembled in the hole; the sleeving ring and the jackscrew are arranged between the fixture and the template spacer; the sleeving ring is sleeved on the jackscrew; the inner diameter of the sleeving ring is larger than the outer diameter of the jackscrew; and the jackscrew can freely move in the sleeving ring. By utilizing a tension and extension principle in the prestressing tension construction technology, the flexible pull rod for the construction bearing platform provided by the utility model not only can ensure the engineering construction quality, but also has the characteristics of good operability, economy and the like, and has higher promotion and application values.
Description
Technical field
The utility model relates to a kind of construction cushion cap flexible draw bar, belongs to the prestress anchoraging technical field of construction.
Background technology
In bearing platform construction, for fixed form, prevent the concrete mould that rises, usually use pull bar to carry out fixedly connected, according to conventional method, the general I level round steel (push-and-pull rod) that uses is at two ends car silk, place pad in the end of pull bar then, fastening nut is fixed, but because bearing platform construction is to operate in foundation ditch, foundation pit side-wall is about 1m to the distance of cap mold panel edges, and pull bar is longer usually, when concreting finishes form removal, is subjected to stopping of foundation pit side-wall, pull bar is difficult to extract usually, promptly allow to extract, the very easy quilt of pull bar is broken bending off with the fingers and thumb and is sustained damage, and therefore adopts push-and-pull rod to have pull bar turnover rate not high (being generally 3-5 time), shortcomings such as personnel's work holdup, operability are not strong.
As everyone knows, steel strand property has flexible preferably, can well be crooked, be easy to extract; Steel strand have stronger rigidity and intensity again after giving certain pulling force simultaneously, can resist template deformation.But its shortcoming be can not be directly at the steel strand silk of getting on the bus, need fixed end is carried out special disposal for this reason.
The utility model content
In order to overcome the problems referred to above, the utility model proposes a kind of construction cushion cap flexible draw bar, it makes full use of the stretch-draw in the tensioning construction technology and puts Zhang Yuanli, not only can guarantee engineering construction quality, and have characteristics such as better operability and economy, have higher popularization and application values.
Its concrete technical scheme is as follows:
A kind of construction cushion cap flexible draw bar of the present utility model comprises flexible draw bar, template pad and end fastening devices, and it is characterized in that: described flexible draw bar is steel strand; Described template pad is a steel plate; Described end fastening devices comprises anchor clamps, jackscrew and the collar; Described anchor clamps are arranged on the outermost of flexible draw bar end, are made up of anchor ring and intermediate plate; With holes in the middle of the described jackscrew, and dispose nut; Between anchor clamps and template pad, the described collar and jackscrew are set; The described collar is enclosed within on the jackscrew, and collar internal diameter is greater than the external diameter of jackscrew, and jackscrew can be free movable in the collar.
Described construction cushion cap flexible draw bar is characterized in that: described steel strand are φ 15.24mm steel strand.
Described construction cushion cap flexible draw bar is characterized in that: described template pad is the A3 steel plate, and thickness is not less than 1cm.
Described construction cushion cap flexible draw bar is characterized in that: the material of described anchor clamps must meet " use for tendon ground tackle, anchor clamps and connector " GB/T 14370-2007 requirement.
Described construction cushion cap flexible draw bar, it is characterized in that: the aperture of described jackscrew is greater than 16mm, and wall thickness is more than or equal to 4mm.
Described construction cushion cap flexible draw bar is characterized in that: the described collar is the A3 steel collar, and its wall thickness is more than or equal to 3mm.
Description of drawings
Fig. 1 is that a kind of construction cushion cap flexible draw bar of the present utility model clamps the front complement assembling section.
Among the figure: 1---steel strand; 2---template; 3---the template pad; 4---the collar; 5---nut; 6---jackscrew; 7---anchor ring; 8---intermediate plate; 9---butter or paraffin are smeared.
The specific embodiment
Below in conjunction with accompanying drawing to the utility model to specifying:
A kind of construction cushion cap flexible draw bar, it uses in the Beijing-Shanghai High-Speed Railway bearing platform construction, comprises steel strand 1, template pad 3 and end fastening devices; The end fastening devices comprises anchor clamps, jackscrew 6 and the collar 4; Anchor clamps are arranged on the outermost of flexible draw bar end, are made up of anchor ring 7 and intermediate plate 8, draw tighter and tighter under the effect of pulling force, and its material and technical requirements must meet " use for tendon ground tackle, anchor clamps and connector " GB/T 14370-2007; With holes in the middle of the described jackscrew 6, jackscrew 6 length customize according to the construction needs, and dispose nut 5, and the material of nut 5 is not less than the A3 steel; The described collar 4 and jackscrew 6 are set between anchor clamps and template pad 3; The collar 4 is enclosed within on the jackscrew 6, and the collar 4 internal diameters are greater than the external diameter of jackscrew 6, and jackscrew 6 can be free movable in the collar 4, and the collar 4 length are according to the customization of construction needs; Steel strand 1 diameter phi 15.24mm, template pad 3 is the steel plate material pad, and the aperture of jackscrew 6 is greater than 16mm, and wall thickness should be calculated according to stressed inspection, generally more than or equal to 4mm.The collar 4 is the A3 steel collar, and its wall thickness is more than or equal to 3mm.
During construction, its operating principle is: anchor clamps are installed in the end of steel strand 1, and these anchor clamps draw tighter and tighter under the condition of tension, play the effect of anchoring; The collar 4 and jackscrew 6 are installed between anchor clamps and template pad 3, during construction, utilize spanner to turn nut 5 on the jackscrew, along with turning of spanner, jackscrew 6 can hold out against anchor clamps, and the nut 5 on the jackscrew 6 can hold out against the collar 4, and the collar 4 is delivered to power on the template pad 3, steel strand 1 can draw tighter and tighter like this, up to meeting design requirement; When template 2 is removed, nut 5 is fallen to twist, along with relaxing of steel strand 1, the intermediate plate in the anchor clamps can come off automatically, can remove fixing.
Through using, adopt the lateral displacement of flexible draw bar template to compare with the rigidity pull bar not than big difference, detect through off normal cushion cap, can satisfy the requirement of Line for Passenger Transportation construction related specifications; Adopt flexible draw bar, every pull bar can both be extracted out, and adopts the rigidity pull bar, and the situation that then has indivedual pull bars can not take out along with the corrosion of reinforcing bar, just forms the corrosion passage in the cushion cap easily, causes hidden danger of quality; Flexible draw bar then can not.Obviously, adopt flexible draw bar to be easier to guarantee engineering construction quality.
In sum, adopt flexible draw bar not only can guarantee engineering construction quality, and have the preferably characteristics such as operability and economy, have higher application value.
Claims (6)
1. a construction cushion cap flexible draw bar comprises flexible draw bar, template pad and end fastening devices, it is characterized in that: described flexible draw bar is steel strand; Described end fastening devices comprises anchor clamps, jackscrew and the collar; Described anchor clamps are arranged on the outermost of flexible draw bar end, are made up of anchor ring and intermediate plate; With holes in the middle of the described jackscrew, and dispose nut; Between anchor clamps and template pad, the described collar and jackscrew are set; The described collar is enclosed within on the jackscrew, and collar internal diameter is greater than the external diameter of jackscrew, and jackscrew can be free movable in the collar.
2. construction cushion cap flexible draw bar as claimed in claim 1 is characterized in that: described steel strand are φ 15.24mm steel strand.
3. construction cushion cap flexible draw bar as claimed in claim 2 is characterized in that: described template pad is the A3 steel plate, and thickness is not less than 1cm.
4. construction cushion cap flexible draw bar as claimed in claim 3 is characterized in that: the material of described anchor clamps must meet " use for tendon ground tackle, anchor clamps and connector " GB/T 14370-2007 requirement.
5. construction cushion cap flexible draw bar as claimed in claim 4 is characterized in that: the aperture of described jackscrew is greater than 16mm, and wall thickness is more than or equal to 4mm, and material is not less than the A3 steel.
6. construction cushion cap flexible draw bar as claimed in claim 5 is characterized in that: the described collar is the A3 steel collar, and its wall thickness is more than or equal to 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201089712U CN201459718U (en) | 2009-06-05 | 2009-06-05 | Flexible pull rod for construction bearing platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201089712U CN201459718U (en) | 2009-06-05 | 2009-06-05 | Flexible pull rod for construction bearing platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201459718U true CN201459718U (en) | 2010-05-12 |
Family
ID=42387071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201089712U Expired - Lifetime CN201459718U (en) | 2009-06-05 | 2009-06-05 | Flexible pull rod for construction bearing platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201459718U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498589A (en) * | 2013-08-20 | 2014-01-08 | 青岛中天斯壮科技有限公司 | Striding type flexible pull rod hydraulic tensioning device |
| CN109642403A (en) * | 2016-05-12 | 2019-04-16 | Fdh基础设施服务有限责任公司 | Bar relaxation device and its operating method |
| CN110409827A (en) * | 2019-08-15 | 2019-11-05 | 中国建筑第八工程局有限公司 | For fixed form to drawing device and its construction method |
-
2009
- 2009-06-05 CN CN2009201089712U patent/CN201459718U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498589A (en) * | 2013-08-20 | 2014-01-08 | 青岛中天斯壮科技有限公司 | Striding type flexible pull rod hydraulic tensioning device |
| CN109642403A (en) * | 2016-05-12 | 2019-04-16 | Fdh基础设施服务有限责任公司 | Bar relaxation device and its operating method |
| CN109642403B (en) * | 2016-05-12 | 2021-05-11 | Fdh基础设施服务有限责任公司 | Rod relaxing device and method of operating the same |
| CN110409827A (en) * | 2019-08-15 | 2019-11-05 | 中国建筑第八工程局有限公司 | For fixed form to drawing device and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |