CN201273060Y - Pre-stress spherical anchorage - Google Patents
Pre-stress spherical anchorage Download PDFInfo
- Publication number
- CN201273060Y CN201273060Y CNU2008200724183U CN200820072418U CN201273060Y CN 201273060 Y CN201273060 Y CN 201273060Y CN U2008200724183 U CNU2008200724183 U CN U2008200724183U CN 200820072418 U CN200820072418 U CN 200820072418U CN 201273060 Y CN201273060 Y CN 201273060Y
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- Prior art keywords
- anchor
- plate
- stressed
- spherical
- bar
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- Expired - Fee Related
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Abstract
The utility model discloses a pre-stressed spherical anchor device, comprising an anchor stool plate, an anchor plate, a clamp plate, a pre-stressed bar and a spiral bar, wherein a steel strand is positioned by the clamp plate to penetrate through the pre-stressed hole on the anchor plate; the spiral bar is mounted at the outer side of the lower excircle surface of the anchor stool plate. The pre-stressed spherical anchor device is characterized in that the anchor plate and the anchor stool plate have spherical fit contact, to improve the bearing state on the pre-stressed bar and the anchor device, avoid stress concentration, reduce the effect of obliquity caused by construction error on pre-stress direction, and make the force direction on the pre-stressed bar consistent to the axis line, thereby effectively improving the bearing state on the pre-stressed bar, avoiding stress concentration, reducing installment accuracy demand, and reducing pre-stress loss.
Description
Technical field
The utility model belongs to construction engineering technical field, is to the improvement of existing prestress anchorage system, relates in particular to a kind of prestressing force sphere ground tackle, is applicable to the construction pre-stress anchoring.
Background technology
Existing post-stressed anchoring system is made up of anchor slab and anchor plate, and construction pre-stress is realized prestress anchoraging by anchor slab and anchor plate, and by anchor slab and anchor plate prestressing force is applied on the structure; For reaching desirable stress, require anchor plate and prestress square to vertical.But in practice of construction, certainly exist construction deviation, be difficult to guarantee that anchor plate and prestress square are to vertical.
In anchoring system, nut is divided into two kinds of plane nut and tapered cup nuts, and anchor plate also correspondingly uses plane backing plate and taper backing plate, and tapered cup nut cooperates by the taper hole of cone with the taper backing plate, is convenient to the correct centering of presstressed reinforcing steel.The original intention of tapered slope contact is that the stretching force on the nut is angled to distributing all around, enlarge contact surface, concrete local stress under the diffusion anchor, but there is a significant disadvantages in the contact of this tapered slope: anchoring nut, prestressed thick reinforcement, anchor plate three installation accuracy require quite high, otherwise cause when putting the anchoring nut to twist not in place.The box girder bridge concrete is branch base plate, web and the moulding of top board two-step pouring, moves owing to multiple reason all might cause reinforcing bar in construction; During stretch-draw, jack is installed and is also caused a deviation easily, does not reach desirable installation accuracy in addition.
Summary of the invention
The utility model discloses a kind of prestressing force sphere ground tackle, and purpose is intended to solve the presstressed reinforcing steel discontinuity that exists in the prior art, easily breaks, installation accuracy requires problems such as high, that loss of prestress is big.
Prestressing force sphere ground tackle of the present utility model comprises anchor slab, anchor plate, it is characterized in that: anchor slab is that the sphere cooperation contacts with the anchor plate contact surface.
Described prestressing force sphere ground tackle, anchor slab are a spherical nut, and spherical nut contacts by the sphere cooperation with a spherical anchor plate.
Good effect of the present utility model is: anchor slab adopts sphere to cooperate with anchor plate and contacts the stress of having improved presstressed reinforcing steel and ground tackle, avoid stress to concentrate, can reduce non-perpendicularity that construction deviation causes to prestress square to influence, make presstressed reinforcing steel be subjected to force direction with its axis unanimity, can effectively improve the stress of presstressed reinforcing steel, avoid stress to concentrate, the reduction installation accuracy requires, loss of prestress is little.
Description of drawings
Fig. 1 is the utility model structure chart;
Fig. 2 is the utility model anchor slab, anchor plate assembly structure schematic diagram.
1 intermediate plate; 2 anchor slabs; 3 anchor plates; 4 spiral bars; 5 bellowss; 6 steel hinge lines.
The specific embodiment
As shown in Figure 1, the utility model is made of intermediate plate 1, anchor slab 2, anchor plate 3, spiral bar 4, bellows 5, steel hinge line 6, steel hinge line 6 passes anchor slab 2 steel twist line holes by intermediate plate 1 location, spiral bar 4 is installed on the outer round surface outside, bottom of anchor plate 3, bellows 5 is installed between the bottom internal circular surfaces of steel hinge line 6 and anchor plate 3, and anchor slab 2 contacts with the cooperation of anchor plate 3 contact surface spheres.
In this patent embodiment, referring to Fig. 2, anchor slab 2 is made spherical nut, and the surface of anchor plate 3 is a spherical, and spherical nut anchor slab 2 contacts by the sphere cooperation with the anchor plate 3 of spherical fitting face.
Claims (2)
1, a kind of prestressing force sphere ground tackle, comprise anchor plate, anchor slab, intermediate plate, presstressed reinforcing steel and spiral bar, steel hinge line passes the anchor slab prestress hole by the intermediate plate location, and spiral bar is installed on the outer round surface outside, bottom of anchor plate, it is characterized in that: anchor slab is that the sphere cooperation contacts with the anchor plate contact surface.
2, according to the described prestressing force sphere of claim 1 ground tackle, it is characterized in that: anchor slab is a spherical nut, and anchor plate has a spherical fitting face, and spherical nut contacts by the sphere cooperation with anchor plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200724183U CN201273060Y (en) | 2008-09-12 | 2008-09-12 | Pre-stress spherical anchorage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200724183U CN201273060Y (en) | 2008-09-12 | 2008-09-12 | Pre-stress spherical anchorage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273060Y true CN201273060Y (en) | 2009-07-15 |
Family
ID=40883408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200724183U Expired - Fee Related CN201273060Y (en) | 2008-09-12 | 2008-09-12 | Pre-stress spherical anchorage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201273060Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839823A (en) * | 2012-09-21 | 2012-12-26 | 铁煤集体企业联合发展有限公司 | Prestressed anchorage device |
| CN103572970A (en) * | 2013-11-12 | 2014-02-12 | 中建三局建设工程股份有限公司 | Limiting device capable of automatically adjusting expansion and contraction quantity of clamping piece and use method thereof |
| CN115450209A (en) * | 2022-10-09 | 2022-12-09 | 中建八局装饰工程有限公司 | Mounting device for prestressed anchor rod spiral rib |
-
2008
- 2008-09-12 CN CNU2008200724183U patent/CN201273060Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839823A (en) * | 2012-09-21 | 2012-12-26 | 铁煤集体企业联合发展有限公司 | Prestressed anchorage device |
| CN103572970A (en) * | 2013-11-12 | 2014-02-12 | 中建三局建设工程股份有限公司 | Limiting device capable of automatically adjusting expansion and contraction quantity of clamping piece and use method thereof |
| CN103572970B (en) * | 2013-11-12 | 2016-02-24 | 中建三局建设工程股份有限公司 | The stopping means of automatic adjustment intermediate plate stroke and using method thereof |
| CN115450209A (en) * | 2022-10-09 | 2022-12-09 | 中建八局装饰工程有限公司 | Mounting device for prestressed anchor rod spiral rib |
| CN115450209B (en) * | 2022-10-09 | 2023-10-13 | 中建八局装饰工程有限公司 | Installation device for spiral rib of prestressed anchor rod |
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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: 20090715 Termination date: 20150912 |
|
| EXPY | Termination of patent right or utility model |