CN201250403Y - Clip-type anchor with low withdrawal value - Google Patents
Clip-type anchor with low withdrawal value Download PDFInfo
- Publication number
- CN201250403Y CN201250403Y CNU2008201484098U CN200820148409U CN201250403Y CN 201250403 Y CN201250403 Y CN 201250403Y CN U2008201484098 U CNU2008201484098 U CN U2008201484098U CN 200820148409 U CN200820148409 U CN 200820148409U CN 201250403 Y CN201250403 Y CN 201250403Y
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- CN
- China
- Prior art keywords
- anchor
- ring
- clip
- prestressed
- anchor ring
- 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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Abstract
A clip-type anchor with low withdrawal value comprises an anchor ring and a clip arranged in an anchor ring taper hole. The clip-type anchor with low withdrawal value is characterized in that the rear portion of a small end of the taper hole of the anchor ring is provided with a support ring, the support ring is composed of two semi-circular ring shims, which enables the clip-type anchor to bear stretching force of a prestressed reinforcement through the support ring arranged between the anchor ring and an anchor bearing plate when the prestressed reinforcement is stretched for the second time through a special tool in the project construction, thereby eating up the withdrawal value of the anchor. A screw thread is arranged outside the anchor ring, which enables a special stretching tool to be connected with the anchor ring through the screw thread arranged on the special stretching tool for stretching when an ultra-short prestressed component is constructed, and the prestressed stretching of the ultra-short prestressed component whose elongation value of the prestressed reinforcement is smaller than the withdrawal value of a common anchor can be possible. The clip-type anchor with low withdrawal value has simple structure and convenient use, the clip-type anchor with low withdrawal value is a component which is applicable to anchoring the prestressed reinforcement in construction of short prestressed components and ultra-short prestressed components in highroads, railroads and hydroelectric projects.
Description
Technical field
The utility model relates to the ground tackle that uses in a kind of pre-stress construction, particularly a kind of low retraction value strand tapered anchorage.
Background technology
At present the common strand tapered anchorage that uses in the engineering is to be made of anchor ring and the intermediate plate that is arranged in the anchor ring taper hole, be to make its elastic stretching distortion under the effect of stretching force in the engineering construction, make in the taper hole of intermediate plate at anchor ring at the retraction that utilizes presstressed reinforcing steel under the effect of limiting plate and realize anchoring to being retracted into certain distance (that is: retraction value) by moveable anchor, jack tension presstressed reinforcing steel.Its retraction value of the ground tackle of said structure is generally 5mm, be applicable to that presstressed reinforcing steel surpasses 20m, prestressed member has sufficient length, presstressed reinforcing steel to use under the situation that the elastic stretching deflection is enough big under the effect of stretching force, but for short prestressed member or ultrashort prestressed member, the deflection of presstressed reinforcing steel elastic stretching under the effect of stretching force is less, the ratio of the retraction value of 5mm and deflection is bigger by contrast, even greater than deflection, the requirement that makes above-mentioned common strand tapered anchorage can't satisfy the member proof stress maybe can't realize the anchoring of presstressed reinforcing steel.
The utility model content
The utility model is the deficiency that exists in the above-mentioned background technology, provides a kind of simple to operate, easy to use, is applicable to the low retraction value strand tapered anchorage that in the construction of short-and-medium prestressed member of engineering and ultrashort prestressed member presstressed reinforcing steel is carried out anchoring.
Its concrete solution is: the taper hole small end rear portion of anchor ring is provided with a gasket ring, and this gasket ring is to be made of two semi-circular ring pads, when making it in engineering construction, carry out two times tensioning to presstressed reinforcing steel by special tool, by being arranged on the pulling force that gasket ring between anchor ring and the anchor plate bears presstressed reinforcing steel, eat up part of the original retraction value of ground tackle with this.
In addition then, the outer setting of anchor ring has screw thread, so that in ultrashort prestressed member construction, special-purpose stretch-draw instrument directly can be connected with anchor ring by the screw thread that is provided with on it and carry out stretch-draw, the stretch value that makes presstressed reinforcing steel becomes possibility less than the stretch-draw of the ultrashort prestressed member of common ground tackle retraction value.
The utility model is provided with a gasket ring and adopts it to be provided with the anchor ring of screw thread owing to anchor ring one end, make it not only can bear the pulling force of presstressed reinforcing steel by gasket ring, reduce the retraction value of ground tackle effectively, and, can satisfy in the construction of ultrashort prestressed member related specifications requirement to the presstressed reinforcing steel anchoring, it is simple to operate, easy to use, real is a kind of parts that are applicable in highway, railway, the short prestressed member of hydroelectric project and the construction of ultrashort prestressed member the presstressed reinforcing steel anchoring.
Description of drawings
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is an anchor ring structural representation among the embodiment 1.
Fig. 3 is a gasket ring structural representation among the embodiment 1.
Fig. 4 is the structural representation of embodiment 2.
The specific embodiment
Embodiment 1
Among Fig. 1, Fig. 2, Fig. 3, wedge shape intermediate plate 1 is arranged in the taper hole of anchor ring 2, and is arranged on the rear portion of anchor ring 2 by the gasket ring 3 that two semi-circular ring pads constitute.
In the construction, when adopting this ground tackle that the presstressed reinforcing steel in the prestressed member preformed hole 5 is carried out stretch-draw anchor, need special tools such as tool using anchor, jack that presstressed reinforcing steel is carried out two times tensioning, in first time stretch-draw anchor process, presstressed reinforcing steel can be out of shape by elastic stretching under the effect of stretching force, makes in the taper hole of intermediate plate 1 at anchor ring at the retraction that utilizes presstressed reinforcing steel under the effect of limiting plate and realizes anchoring to being retracted into certain distance.When second time stretch-draw, anchor ring 2 will leave anchor plate 4, and gasket ring 3 is encased inside between anchor ring 2 and the anchor plate 4, be used to bear the pulling force of presstressed reinforcing steel, effectively eat up part of the retraction value of ground tackle.
Embodiment 2
Among Fig. 4, anchor ring 2 is provided with for the external screw thread that connects special-purpose stretch-draw instrument, all the other structures are identical with embodiment 1. and adopt special-purpose stretch-draw instrument to connect the external screw thread that is provided with on the anchor ring 2 in the construction and directly anchor ring 2 is carried out stretch-draw, intermediate plate 1 is in follow-up realization anchoring in the taper hole of anchor ring 2 under the effect of stretching force.Anchor ring 2 will leave anchor plate 4 this moment, and gasket ring 3 is encased inside between anchor ring 2 and the anchor plate 4, be used to bear the pulling force of presstressed reinforcing steel.It is applicable in the ultrashort prestressed member carries out anchoring to presstressed reinforcing steel.
Claims (2)
1, a kind of low retraction value strand tapered anchorage comprises anchor ring and is arranged on intermediate plate in the anchor ring taper hole, it is characterized in that the taper hole small end rear portion of anchor ring (2) is provided with a gasket ring (3), and this gasket ring (3) is to be made of two semi-circular ring pads.
2, low retraction value strand tapered anchorage according to claim 1 is characterized in that the outer setting of anchor ring (2) has screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201484098U CN201250403Y (en) | 2008-07-30 | 2008-07-30 | Clip-type anchor with low withdrawal value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201484098U CN201250403Y (en) | 2008-07-30 | 2008-07-30 | Clip-type anchor with low withdrawal value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250403Y true CN201250403Y (en) | 2009-06-03 |
Family
ID=40746075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201484098U Expired - Fee Related CN201250403Y (en) | 2008-07-30 | 2008-07-30 | Clip-type anchor with low withdrawal value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250403Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182183A (en) * | 2011-04-26 | 2011-09-14 | 苏州市能工基础工程有限责任公司 | Porous anchor device and using method thereof |
| CN113404302A (en) * | 2021-06-28 | 2021-09-17 | 中国建筑第八工程局有限公司 | Tensioning device and tensioning method for carbon fiber prestressed rod piece |
-
2008
- 2008-07-30 CN CNU2008201484098U patent/CN201250403Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182183A (en) * | 2011-04-26 | 2011-09-14 | 苏州市能工基础工程有限责任公司 | Porous anchor device and using method thereof |
| CN113404302A (en) * | 2021-06-28 | 2021-09-17 | 中国建筑第八工程局有限公司 | Tensioning device and tensioning method for carbon fiber prestressed rod piece |
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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: 20090603 Termination date: 20140730 |
|
| EXPY | Termination of patent right or utility model |