CN220725535U - Prestressed concrete steel bar - Google Patents
Prestressed concrete steel bar Download PDFInfo
- Publication number
- CN220725535U CN220725535U CN202322453627.XU CN202322453627U CN220725535U CN 220725535 U CN220725535 U CN 220725535U CN 202322453627 U CN202322453627 U CN 202322453627U CN 220725535 U CN220725535 U CN 220725535U
- Authority
- CN
- China
- Prior art keywords
- steel bar
- bar body
- prestressed concrete
- concrete
- concrete steel
- 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.)
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Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 4
- 239000004567 concrete Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000004873 anchoring Methods 0.000 abstract 1
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a prestressed concrete steel bar, which aims to solve the problem that the use of a prestressed component is affected by poor fatigue resistance of the concrete steel bar when the prestressed concrete steel bar is used. The conical holes are processed at the threaded screwed ends of the two-end anchoring nuts, and the arc ending is performed at the threaded ending part of the steel rod body, so that the stress concentration of the threaded ending part is reduced, the inclined roller straightening machine is adopted for straightening, the surface smoothness is improved after rolling, the steel rod is in contact with concrete to generate relative displacement more easily, and the concrete is prevented from being damaged in the tensioning process.
Description
Technical Field
The utility model relates to the technical field of concrete steel bars, in particular to a prestressed concrete steel bar.
Background
The concrete steel bar has the characteristics of high strength and toughness, low relaxation, strong bond strength with concrete, good weldability, upsetting property, material saving and the like, and has been widely applied to prestressed components such as high-strength prestressed concrete centrifugal pipe piles, electric poles, overhead piers, railway sleeper and the like in abroad.
When the existing concrete steel bar is used, the fatigue resistance performance is poor, and the use of a prestress component is influenced.
Disclosure of Invention
The utility model aims to provide a prestressed concrete steel bar, which aims to solve the problems that the prior concrete steel bar is poor in fatigue resistance and influences the use of a prestressed component when being used.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a prestressed concrete steel bar, includes steel bar body, anchor nut, protective sheath and tears the guide line, the screw thread has been seted up to the surface of steel bar body, the surface threaded connection of steel bar body has two anchor nuts, two anchor nuts are located the left and right sides both ends of steel bar body respectively, the surface cover of steel bar body is equipped with the protective sheath, the surface of steel bar body is provided with two guide lines of tearing.
In a further embodiment, the protective sleeve is made of PE.
In a further embodiment, the threaded end of each of the anchor nuts is provided with a taper.
In a further embodiment, the left and right end screw thread ends of the steel bar body are provided with circular arcs.
In a further embodiment, the outer surface of the steel bar body is sprayed with an anti-corrosion material.
Compared with the prior art, the utility model has the beneficial effects that:
according to the device, chamfering is carried out in the inner threaded holes of the anchor nuts at the two ends, and circular arc ending is carried out at the thread ending part of the steel bar body, so that stress concentration of the thread ending part is reduced, the inclined roll straightening machine is adopted for straightening, the surface smoothness is improved after rolling, the steel bar is enabled to be in contact with concrete to generate relative displacement more easily, and the concrete is prevented from being damaged in the tensioning process.
Drawings
Fig. 1 is an elevation view of a prestressed concrete steel rod.
Fig. 2 is a cross-sectional view of a protective sheath elevation of a prestressed concrete steel rod.
Fig. 3 is an elevation view of the steel bar body of the prestressed concrete steel bar.
FIG. 4 is a cross-sectional view of a side view of an anchor nut of a prestressed concrete steel rod.
In the figure: 1. a steel bar body; 2. an anchor nut; 3. a protective sleeve; 4. tearing the guide line.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, in the present utility model, a prestressed concrete steel bar includes a steel bar body 1, anchor nuts 2, a protecting sleeve 3 and a tearing guide line 4, wherein the outer surface of the steel bar body 1 is provided with threads, the outer surface of the steel bar body 1 is in threaded connection with two anchor nuts 2, the two anchor nuts 2 are respectively located at the left end and the right end of the steel bar body 1, the protecting sleeve 3 is sleeved on the outer surface of the steel bar body 1, and the outer surface of the steel bar body 1 is provided with two tearing guide lines 4.
The protective sleeve 3 adopts the PE material, adopts protective sleeve 3 can prevent effectively that steel bar body 1 external screw thread from suffering the damage, and the screw in end of every anchor nut 2 all is provided with certain tapering, and the tapering of here is not conventional chamfer, can let prestressing force concentrate.
Both ends screw thread end of controlling of steel bar body 1 all are provided with the circular arc, have reduced the profitability of screw thread end portion and have concentrated, and the surface spraying of steel bar body 1 has anticorrosive material, can effectually prevent that steel bar body 1 outside from appearing corroding.
The working principle of the utility model is as follows: the steel bar body 1 can generate certain bending after being subjected to medium-frequency quenching and tempering, and therefore, a special inclined roller straightener is adopted to straighten after the medium-frequency quenching and tempering, the steel bar body 1 can be rotated and moved forward in the straightening process, corrosion-resistant oxide skin can be removed from the surface of the steel bar body 1, after the steel bar body 1 is rolled in a full-length mode, positive pressure is generated on the surface of the steel bar body 1, the integral fatigue resistance is effectively improved, meanwhile, the surface smoothness is improved after rolling, the steel bar body 1 is enabled to be in contact with concrete to generate relative displacement more easily, the concrete is prevented from being damaged in the tensioning process, after the steel bar body 1 is subjected to medium-frequency quenching and tempering treatment and straightening rolling, waste heat blackening treatment or epoxy spraying is carried out, the steel bar body 1 is enabled to be subjected to effective bottom corrosion-resistant treatment, the steel bar body 1 is sleeved into the protective sleeve 3 in a full-length mode, threads of the steel bar body 1 can be effectively protected from being damaged in the storage and transportation processes, meanwhile, the tearing guide lines 4 are arranged at two ends, and the protective sleeve 3 can be torn at two ends by the tearing guide lines 4 before use.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a prestressed concrete steel bar which characterized in that: including steel bar body (1), anchor nut (2), protective sheath (3) and tear guide line (4), the screw thread has been seted up to the surface of steel bar body (1), the surface threaded connection of steel bar body (1) has two anchor nuts (2), two anchor nuts (2) are located both ends about steel bar body (1) respectively, the surface cover of steel bar body (1) is equipped with protective sheath (3), the surface of steel bar body (1) is provided with two guide lines (4) of tearing.
2. A prestressed concrete steel bar according to claim 1, wherein: the protective sleeve (3) is made of PE.
3. A prestressed concrete steel bar according to claim 1, wherein: the threaded screwing-in end of each anchor nut (2) is provided with a certain taper.
4. A prestressed concrete steel bar according to claim 1, wherein: the left end and the right end of the steel bar body (1) are provided with circular arcs.
5. A prestressed concrete steel bar according to claim 1, wherein: the outer surface of the steel bar body (1) is sprayed with an anti-corrosion material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322453627.XU CN220725535U (en) | 2023-09-11 | 2023-09-11 | Prestressed concrete steel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322453627.XU CN220725535U (en) | 2023-09-11 | 2023-09-11 | Prestressed concrete steel bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220725535U true CN220725535U (en) | 2024-04-05 |
Family
ID=90496432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322453627.XU Active CN220725535U (en) | 2023-09-11 | 2023-09-11 | Prestressed concrete steel bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220725535U (en) |
-
2023
- 2023-09-11 CN CN202322453627.XU patent/CN220725535U/en active Active
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| GR01 | Patent grant |