CN205134746U - Both ends area screwed prestressing steel - Google Patents
Both ends area screwed prestressing steel Download PDFInfo
- Publication number
- CN205134746U CN205134746U CN201520930496.2U CN201520930496U CN205134746U CN 205134746 U CN205134746 U CN 205134746U CN 201520930496 U CN201520930496 U CN 201520930496U CN 205134746 U CN205134746 U CN 205134746U
- Authority
- CN
- China
- Prior art keywords
- nut
- screw thread
- screwed
- indented bars
- bar
- 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
The utility model discloses a both ends area screwed prestressing steel, the both ends of reinforcing rod all are equipped with the spiral head, the top outer wall of spiral head has cup jointed the nut, the bottom of nut is provided with the insulating pad, the bottom of insulating pad is equipped with the deflation nut, the bottom of reduceing the nut is equipped with the insulating pad, the bottom of insulating pad is equipped with triangle anchor backing plate, the bottom of triangle anchor backing plate is equipped with the conical body nut that cup joints in spiral head bottom, the outer wall parcel of spiral head has last screw thread strip and lower screw thread strip, and goes up screw thread strip and the outer wall formation a pair of position relative thread profile groove of lower screw thread strip at the spiral head, it has the aperture to open on the deflation nut, and aperture inner chamber spiro union has fastening screw, this both ends area screwed prestressing steel, the effectual stress state in advance who subtracts the loss of short prestressing steel tip stress, protection reinforcing bar.
Description
Technical field
The utility model relates to prestressed reinforcement technical field, is specially the screwed prestressed reinforcement in a kind of two ends.
Background technology
Prestressed reinforcement is before structural element uses, by pre-tensioning system or post stretching in advance to the compressive stress that concrete members applies, use very general in concrete construction, reinforced concrete structure, component tension has crack, although do not affect safety, but sense organ is bad, adopt and first apply pulling force to reinforcing bar, then concreting, treat that intensity reaches requirement and unclamps reinforcing bar, reinforcing bar is bounced back, offset with the pulling force of normal service load, the reinforcing bar by pulling force is added after shaping, then component two is anchored at apparatus, during stretch-draw, prestressed reinforcement has the elongation of 3 percent 6 percent, elongation stress is utilized to set up pretightning force, restrained reinforcement is reached the globality of concrete component and is improved load resistant power, in concrete curing process, the surface of reinforcing bar and the concrete after hardening form natural anchoring bond, during application in the place that reinforcing bar screw thread is adjacent a preset backing metal being greater than diameter and being greater than bar diameter more than one times, strengthen concrete and rebar tension and compression area, the temperature physics of confined concrete and reinforcing bar is crept, shorten end and transmit stress loss, the concrete component that prior art all inevitably makes prestressed reinforcement head expose after curing is outside, cause the corrosion of concrete component be full of cracks and prestressed reinforcement head, and prestressing force comparatively fast loses, for this reason, we propose the screwed prestressed reinforcement in a kind of two ends.
Utility model content
The purpose of this utility model is to provide a kind of two ends screwed prestressed reinforcement, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme: the screwed prestressed reinforcement in a kind of two ends, comprise reinforcement bar, the two ends of described reinforcement bar are equipped with indented bars head, the top exterior walls of described indented bars head is socketed with nut, the bottom of described nut is provided with insulation spacer, the bottom of described insulation spacer is provided with deflation nut, the bottom of described deflation nut is provided with insulation spacer, the bottom of described insulation spacer is provided with triangle anchor plate, the bottom of described triangle anchor plate is provided with the bullet nut be socketed in bottom indented bars head, the outer wall of described indented bars head is enclosed with screw thread bar and lower screw thread bar, and upper screw thread bar and lower screw thread bar form the relative thread profile groove in a pair position at the outer wall of indented bars head, described deflation nut has aperture, and aperture inner chamber is bolted with fastening screw.
Preferably, described fastening screw is relative two groups in position, and the inwall of the section and thread profile groove of often organizing screw rod is fitted.
Preferably, described triangle anchor plate is equilateral triangle, and diameter is greater than the diameter more than one times of indented bars head.
Preferably, described upper screw thread bar and lower screw thread bar are flat thread bar.
Preferably, the outer wall of described nut scribbles carbon fiber synthetic resin.
Compared with prior art, the beneficial effects of the utility model are: the screwed prestressed reinforcement in these two ends, put tensile stress when can effectively prevent from suddenly putting impact concrete contact area and occur losing anchor phenomenon, reduce the loss of prestress of concrete component, the anchor plate of equilateral triangle increases concrete and rebar tension and compression area, the better prestressed performance of protection can be provided, tighten nut and fastening screw with the use of also making positive triangle anchor plate have better steadiness, the end face of fastening screw is fitted in the inwall of thread profile groove, on prevention indented bars head, secure component loosens, and the flat thread structure of screw thread bar also makes indented bars head have better fastening performance up and down, the nut scribbling carbon fiber synthetic resin prevents the indented bars head exposed to be corroded, insulation spacer serves the effect of the electric isolution protection of indented bars head.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is deflation nut structure schematic diagram of the present utility model;
Fig. 3 is indented bars header structure schematic diagram of the present utility model;
Fig. 4 is indented bars head sectional view of the present utility model.
In figure: on 1 reinforcement bar, 2 indented bars heads, 21, screw thread bar, 22 times screw thread bars, 23 thread profile grooves, 3 nuts, 4 triangle anchor plates, 5 bullet nuts, 6 insulation spacers, 7 fastening screws, 8 tighten nut.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-4, the utility model provides a kind of technical scheme: the screwed prestressed reinforcement in a kind of two ends, comprise reinforcement bar 1, the two ends of reinforcement bar 1 are equipped with indented bars head 2, the top exterior walls of indented bars head 2 is socketed with nut 3, the outer wall of nut 3 scribbles carbon fiber synthetic resin, effectively can slow down the outer indented bars head 2 being exposed at the concrete component outside of sclerosis to be corroded phenomenon, the bottom of nut 3 is provided with insulation spacer 6, double thread steel bar end 2 plays electric isolution protective action, the bottom of insulation spacer 6 is provided with tightens nut 8, the bottom tightening nut 8 is provided with insulation spacer 6, the bottom of insulation spacer 6 is provided with triangle anchor plate 4, triangle anchor plate 4 is equilateral triangle, and diameter is greater than the diameter more than one times of indented bars head 2, strengthen concrete and rebar tension and compression area, make uniform force, effectively decrease the loss of prestress of Bar Anchorage, the bottom of triangle anchor plate 4 is provided with the bullet nut 5 be socketed in bottom indented bars head 2, be conducive to increasing reinforcing bar and concrete adhesion strength, the outer wall of indented bars head 2 is enclosed with screw thread bar 21 and lower screw thread bar 22, and upper screw thread bar 21 and lower screw thread bar 22 form the relative thread profile groove 23 in a pair position at the outer wall of indented bars head 2, upper screw thread bar 21 and lower screw thread bar 22 are flat thread bar, better fastening performance is provided, tighten on nut 8 and have aperture, and aperture inner chamber is bolted with fastening screw 7, fastening screw 7 is relative two groups in position, and often the group section of screw rod 7 and the inwall of thread profile groove 23 are fitted, slow down loosening of the securing member on indented bars head 2, reduce loss of prestress.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.
Claims (5)
1. the screwed prestressed reinforcement in two ends, comprise reinforcement bar (1), it is characterized in that: the two ends of described reinforcement bar (1) are equipped with indented bars head (2), the top exterior walls of described indented bars head (2) is socketed with nut (3), the bottom of described nut (3) is provided with insulation spacer (6), the bottom of described insulation spacer (6) is provided with tightens nut (8), the bottom of described deflation nut (8) is provided with insulation spacer (6), the bottom of described insulation spacer (6) is provided with triangle anchor plate (4), the bottom of described triangle anchor plate (4) is provided with the bullet nut (5) being socketed in indented bars head (2) bottom, the outer wall of described indented bars head (2) is enclosed with screw thread bar (21) and lower screw thread bar (22), and upper screw thread bar (21) and lower screw thread bar (22) form the relative thread profile groove (23) in a pair position at the outer wall of indented bars head (2), described deflation nut (8) has aperture, and aperture inner chamber is bolted with fastening screw (7).
2. the screwed prestressed reinforcement in a kind of two ends according to claim 1, it is characterized in that: described fastening screw (7) is relative two groups in position, and the inwall of the section and thread profile groove (23) of often organizing screw rod (7) is fitted.
3. the screwed prestressed reinforcement in a kind of two ends according to claim 1, is characterized in that: described triangle anchor plate (4) is equilateral triangle, and diameter is greater than the diameter more than one times of indented bars head (2).
4. the screwed prestressed reinforcement in a kind of two ends according to claim 1, is characterized in that: described upper screw thread bar (21) and lower screw thread bar (22) are flat thread bar.
5. the screwed prestressed reinforcement in a kind of two ends according to claim 1, is characterized in that: the outer wall of described nut (3) scribbles carbon fiber synthetic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520930496.2U CN205134746U (en) | 2015-11-20 | 2015-11-20 | Both ends area screwed prestressing steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520930496.2U CN205134746U (en) | 2015-11-20 | 2015-11-20 | Both ends area screwed prestressing steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205134746U true CN205134746U (en) | 2016-04-06 |
Family
ID=55620553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520930496.2U Expired - Fee Related CN205134746U (en) | 2015-11-20 | 2015-11-20 | Both ends area screwed prestressing steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205134746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108517765A (en) * | 2018-04-13 | 2018-09-11 | 重庆交通大学 | Deformed bar anchor |
-
2015
- 2015-11-20 CN CN201520930496.2U patent/CN205134746U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108517765A (en) * | 2018-04-13 | 2018-09-11 | 重庆交通大学 | Deformed bar anchor |
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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: 20160406 Termination date: 20161120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |