CN203821247U - Low-retraction anchorage device capable of being conveniently connected to hanging basket - Google Patents
Low-retraction anchorage device capable of being conveniently connected to hanging basket Download PDFInfo
- Publication number
- CN203821247U CN203821247U CN201420244978.8U CN201420244978U CN203821247U CN 203821247 U CN203821247 U CN 203821247U CN 201420244978 U CN201420244978 U CN 201420244978U CN 203821247 U CN203821247 U CN 203821247U
- Authority
- CN
- China
- Prior art keywords
- low
- anchor
- hanging basket
- hole
- plate
- 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
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000010276 construction Methods 0.000 abstract description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- 238000004873 anchoring Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 239000011440 grout Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a low-retraction anchorage device capable of being conveniently connected to a hanging basket. The low-retraction anchorage device comprises an anchor backing plate, wherein the anchor backing plate is of an inverted round tower structure, and the outside of the anchor backing plate is provided with two layers of bosses. Spiral ribs are arranged on the outer side of the anchor backing plate in a sleeved mode. A big-end-up conical inner bore is formed in the anchor backing plate in the axis direction. A corrugated pipe is installed on the lower portion of the conical inner bore. A low-retraction nut is embedded in a spigot in the upper end face of the anchor backing plate. A working anchor plate is screwed inside the low-retraction nut. A plurality of conical through holes are formed in the working anchor plate. Clamping sheets are arranged in the conical through holes. A threaded through hole is formed in the center of the working anchor plate. A finish rolling threaded connection reinforcing steel bar is screwed in the threaded through hole. The low-retraction anchorage device has the advantages of being simple in structure, connection between the low-retraction anchorage device and the construction hanging basket can be well realized, after tensioning is completed, the reinforcing steel bar is removed from the working hanging basket and screwed out of the working anchor plate, the threaded through hole can also be used as a grouting hole, no grouting hole needs to be formed additionally, and therefore the practical application value of the low-retraction anchorage device is improved.
Description
Technical field
The utility model relates to bridge construction prestressed anchor, especially relates to a kind of low retraction ground tackle of being connected with Hanging Basket be convenient to.
Background technology
Low retraction ground tackle is a kind of relatively new prestressed anchor, conventionally adopt twice tension construction technology: for the first time according to conventional prestressing force drawing process tension steel strand, make the intermediate plate in anchor cup clamp prestress wire, now the amount of recovery of steel strand is generally 6mm; Stretch-draw anchor cup for the second time, reach after the design stretching force of steel strand, the nut of tightening outside anchor cup is fixed, make the retraction loss of prestressed stretch-draw reach minimum, the amount of recovery of steel strand can be controlled to 1mm, thereby having realized high accuracy stretch-draw, is a kind of ground tackle that is suitable for short-and-medium length prestressed strand, can be used for substituting the finish rolling deformed bar that tradition is used.
The advantage of low retraction ground tackle is that amount of recovery is little, be particularly suitable for adopting beam bridge and the cable stayed bridge of short-and-medium vertical prestressing steel bundle, shortcoming is conventionally to adopt Hanging Basket method Cantilever Casting Construction due to beam bridge and cable stayed bridge, execute man-hour requirement by temporary fixed to Hanging Basket and beam body, traditional technique generally adopts reinforcing bar connector to connect Hanging Basket and finish rolling deformed bar, if use existing low retraction ground tackle, can not realize ground tackle and be connected with the direct of Hanging Basket, the actual application value of low retraction ground tackle is reduced.
Summary of the invention
The purpose of this utility model is to provide a kind of low retraction ground tackle of being connected with Hanging Basket be convenient to.
For achieving the above object, the utility model can be taked following technical proposals:
The low retraction ground tackle that is connected with Hanging Basket be convenient to described in the utility model, comprise the outside anchor plate that is rounding tower structure with two-layer boss, be set with spiral bar in described anchor plate outside, offer up big and down small cone-shaped inner hole along the axis direction of described anchor plate, the bottom of described cone-shaped inner hole is equiped with bellows; Described anchor plate upper surface seam is embedded with low retraction nut, and its inward turning is screwed with work anchor slab, on described work anchor slab, offers multiple conical through-holes, in described conical through-hole, is provided with intermediate plate; The circle centre position of described work anchor slab offers tapped through hole, and its inward turning is screwed with the finish rolling reinforcing bar that is threaded.
For ensuring enough anchored force, a taper platform is extended in described work anchor slab bottom surface centre downwards, makes the T-shaped structure in longitudinal section of described work anchor slab.
The utility model has the advantage of simple in structurely, can well solve the connectivity problem between existing low retraction ground tackle and construction hanging basket, improved the actual application value of existing low retraction ground tackle.The utility model is by being opened in the tapped through hole of work anchor slab circle centre position, with and the stubborn finish rolling of the inward turning reinforcing bar that is threaded, while making to construct, be connected with work Hanging Basket very easily, simultaneously after stretch-draw completes, what finish rolling was threaded to reinforcing bar and work Hanging Basket is connected dismounting, and by its from work anchor slab screw out after, tapped through hole can double as again grout hole use, without offering in addition grout hole.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, the low retraction ground tackle that is connected with Hanging Basket be convenient to described in the utility model, comprise the outside anchor plate 1 that is rounding tower structure with two-layer boss, be set with spiral bar 2 in anchor plate 1 outside, spiral bar 2 is filled to the large end in top from the bottom small end of anchor plate 1, offer up big and down small cone-shaped inner hole 3 along the axis direction of anchor plate 1, the bottom of cone-shaped inner hole is equiped with bellows 4; Anchor plate 1 upper surface seam is embedded with low retraction nut 5, and its inward turning is screwed with work anchor slab 6, and the taper platform that 1 ~ 5cm is high is extended in work anchor slab 6 bottom surface centres downwards, makes the T-shaped structure in longitudinal section of work anchor slab 6; On work anchor slab 6, offer multiple conical through-holes, the number of conical through-hole is determined by the reinforcing bar number of steel strand; In conical through-hole, be provided with intermediate plate 7, the inner side of intermediate plate 7 is with barb-shaped teeth, and teeth interlock steel strand are inserted in the conical through-hole of work anchor slab 6; Circle centre position at work anchor slab 6 offers tapped through hole, and its inward turning is screwed with the finish rolling reinforcing bar 8 that is threaded.
Steel wire bundle penetrates by bellows 4 in the cone-shaped inner hole 3 of anchor plate 1, and the single steel strand 9 respectively conical through-hole from work anchor slab 6 is clamped and inserted in conical through-hole by intermediate plate 7 after passing.
Stretch-draw at twice when construction: stretch-draw for the first time, starting oil pump starts after stretch-draw to jack fuel feeding, splicing sleeve withstands work anchor slab 6, jack clamps steel strand and carries out backward stretch-draw, and now, steel strand 9 leave work anchor slab 6, stretch-draw reaches after design stress, start pressing device, compression bar by work clip sheet 7 jacking work anchor slabs 6, is realized anchoring forward.Then, off-load oil return, completes anchoring, and now steel strand 9 bounce back, thereby larger stress loss occurs, and then carries out stretch-draw for the second time, and now support set no longer withstands work anchor slab 6, but withstands anchor plate 1 by top anchor cover, and jack is clamped steel strand and carried out stretch-draw.After stretch-draw starts, steel strand 9, low retraction nut 5 leave backward anchor plate 1 together with work anchor slab 6, make low retraction nut 5 have certain interval with anchor plate 1.Stretch-draw, after design load, is threaded to low retraction nut 5 with anchor plate 1 closely connected, and oil return anchoring, completes stretch-draw.Reach by primary stretching single steel strand anchoring and secondary whole bundle steel strand tension anchoring two step operations the effect that reduces amount of recovery like this.
After stretch-draw completes, when work Hanging Basket is while marching to this place, be threaded one end of reinforcing bar 8 of finish rolling is anchored to Hanging Basket top, the other end screws in its bottom from the default tapped through hole of work anchor slab 6.Finish rolling be threaded reinforcing bar 8 diameter according to required anchored force determine, length according to actual Hanging Basket size determine.Default tapped through hole is positioned at the center of work anchor slab 6, and the spacing of internal whorl is fixed, and the external screw thread of the reinforcing bar 8 that is threaded with finish rolling matches.Work anchor slab 6 bottom surfaces extend the taper platform that 1 ~ 5cm is high, ensure that anchorage length is to provide enough anchored force.
When work Hanging Basket is need move on time, by finish rolling be threaded dismountings that be connected of reinforcing bar 8 and work Hanging Basket back-out from the anchor slab 6 of working.Now, the tapped through hole that is preset in work anchor slab 6 centers can double as grout hole and use, and cement mortar grouting is entered in bellows 4.After filling, for preventing the materials such as cement mortar is corroded by external environment, available epoxy sealing.Meanwhile, work Hanging Basket is connected with the low retraction ground tackle at next beam section place by the finish rolling reinforcing bar 8 that is threaded, and moves in circles until the end of constructing with this.
Claims (2)
1. be convenient to the low retraction ground tackle being connected with Hanging Basket for one kind, comprise the outside anchor plate (1) that is rounding tower structure with two-layer boss, be set with spiral bar (2) in described anchor plate (1) outside, offer up big and down small cone-shaped inner hole (3) along the axis direction of described anchor plate (1), the bottom of described cone-shaped inner hole is equiped with bellows (4); Described anchor plate (1) upper surface seam is embedded with low retraction nut (5), and its inward turning is screwed with work anchor slab (6), on described work anchor slab (6), offers multiple conical through-holes, is provided with intermediate plate (7) in described conical through-hole; It is characterized in that: the circle centre position of described work anchor slab (6) offers tapped through hole, its inward turning is screwed with the finish rolling reinforcing bar (8) that is threaded.
2. the low retraction ground tackle that is connected with Hanging Basket be convenient to according to claim 1, is characterized in that: a taper platform is extended in described work anchor slab (6) bottom surface centre downwards, makes the T-shaped structure in longitudinal section of described work anchor slab (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244978.8U CN203821247U (en) | 2014-05-14 | 2014-05-14 | Low-retraction anchorage device capable of being conveniently connected to hanging basket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244978.8U CN203821247U (en) | 2014-05-14 | 2014-05-14 | Low-retraction anchorage device capable of being conveniently connected to hanging basket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203821247U true CN203821247U (en) | 2014-09-10 |
Family
ID=51476764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420244978.8U Expired - Lifetime CN203821247U (en) | 2014-05-14 | 2014-05-14 | Low-retraction anchorage device capable of being conveniently connected to hanging basket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203821247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763105A (en) * | 2015-04-17 | 2015-07-08 | 柳州市桥厦工程管材有限公司 | Prestressed plastic corrugated pipe with anchor bearing plate inserting opening |
-
2014
- 2014-05-14 CN CN201420244978.8U patent/CN203821247U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763105A (en) * | 2015-04-17 | 2015-07-08 | 柳州市桥厦工程管材有限公司 | Prestressed plastic corrugated pipe with anchor bearing plate inserting opening |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Longhai Road 450052 Henan city of Zhengzhou province No. 70 Patentee after: HENAN PROVINCIAL COMMUNICATIONS PLANNING & DESIGN INSTITUTE Co.,Ltd. Address before: Longhai Road 450052 Henan city of Zhengzhou province No. 70 Patentee before: HENAN PROVINCIAL COMM PLANNING SURVEY & DESIGN INST Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |