CN201809902U - Novel-structure prestressed concrete steel strand - Google Patents
Novel-structure prestressed concrete steel strand Download PDFInfo
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- CN201809902U CN201809902U CN2010205270004U CN201020527000U CN201809902U CN 201809902 U CN201809902 U CN 201809902U CN 2010205270004 U CN2010205270004 U CN 2010205270004U CN 201020527000 U CN201020527000 U CN 201020527000U CN 201809902 U CN201809902 U CN 201809902U
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Abstract
The utility model belongs to the technical field of building materials, in particular to a novel-structure prestressed concrete steel strand, and solves the technical problems of low mechanical strength, high manufacturing difficulty and the like of the conventional prestressed concrete steel strand. The novel-structure prestressed concrete steel strand comprises a stranded wire stranded by a plurality of steel wires and also comprises at least one peripheral wire made of steel, wherein the peripheral wire is spirally wound at the periphery of the stranded wire. The novel-structure prestressed concrete steel strand has the advantages that: 1, because the peripheral wire is wound at the periphery of the stranded wire, namely an uneven structure is formed on the surface of the stranded wire, and the uneven structure is high in uneven degree, so the prestressed concrete steel strand cannot longitudinally move; 2, the peripheral wire is tightly wound at the periphery of the stranded wire and also can be tightly combined with concrete in the process of casting concrete; 3, the peripheral wire has a certain strength, so the integral strength of a concrete member is improved in two aspects; and 4, the steel strand is simple in structure, easy to process and manufacture and low in production cost.
Description
Technical field
The utility model belongs to building material technical field, especially relates to a kind of new structure prestressed concrete steel strand.
Background technology
In order to improve the intensity of concrete structure, in concrete, generally all be filled with prestress wire.The intensity size of concrete structure also depends on prestress wire and concrete adhesion except outside the Pass having with steel strand strength.The ordinary construction of prestress wire is 3 strands, 7 strands and 19 strands, and cross section is circular.When the concrete structure bearing load, be easy to generate moving of prestress wire, adhesion is not enough, has reduced the intensity of concrete structure.In order to improve prestress wire and concrete adhesion, people are provided with indentation in Steel Wire Surface.This rough indentation has stoped prestress wire moving in concrete structure.But because this rough degree is lower, effect is not fine, and the processing technology complexity, need carry out indentation to steel wire.
For this reason, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of steel strand for prestressed concrete [application number: 200820012235.2], it is characterized in that: described steel strand for prestressed concrete are formed by 3～18 strands strand system, and described strand is made the outside of whole steel strand integral body for prestressed concrete and/or the space between each strand all has corrosion-resistant finishes.This scheme has improved Corrosion Protection to a certain extent, but also not obvious to the raising of structural strength.The somebody has invented a kind of indented steel stranded wire for prestressed concrete [application number: 200820075206.0], main by 7 and 19 steel strand that indented wire is twisted into, indented wire wherein has 3 indentation or regular impression or grooves along the steel wire length direction for the surface.Thereby solved core silk slippage retraction problems, strengthened steel strand and concrete bond stress, improved the mechanical property of steel strand.Yet this scheme remains and adopts the mode of indentation to improve structural strength, different only be the quantity of indentation.
Therefore, prior art does not all fundamentally solve existing technical problem, demands urgently improving.
Summary of the invention
The purpose of this utility model is at the problems referred to above, provides a kind of reasonable in design, simple in structure, easy to implement, low cost of manufacture, the new structure prestressed concrete steel strand that mechanical performance obviously promotes.
For achieving the above object, the utility model has adopted following technical proposal: this new structure prestressed concrete steel strand, comprise by the some stranded twisted wires that form of steel wire, it is characterized in that, these steel strand also comprise at least one object-line of being made by steel, and this object-line shape in the shape of a spiral is wound on the periphery of described twisted wire.
Object-line closely is wrapped in the periphery of twisted wire, when casting concrete, can combine closely with concrete again.Because object-line is wound on the twisted wire periphery, is equivalent to form rough structure on the twisted wire surface.The concavo-convex degree of this uneven structure is very high, the prestressed concrete steel strand can not produced vertically move.On the other hand, object-line has certain intensity, has therefore all improved the bulk strength of concrete structure both ways.Process of the present utility model is also fairly simple, after common prestress steel (being twisted wire) stress moulding, twines an object-line again and gets final product.
In above-mentioned new structure prestressed concrete steel strand, the external surface of described steel wire is a shiny surface; Perhaps the external surface of described steel wire is provided with cut.
In above-mentioned new structure prestressed concrete steel strand, described object-line external surface is a shiny surface; Perhaps the external surface of described object-line is provided with cut.
In above-mentioned new structure prestressed concrete steel strand, the quantity of described steel wire is any one in 3,7 or 19.
In above-mentioned new structure prestressed concrete steel strand, the quantity of described object-line is one.
Compared with prior art, the advantage of this new structure prestressed concrete steel strand is: 1, because object-line is wound on the twisted wire periphery, be equivalent to form rough structure on the twisted wire surface.The concavo-convex degree of this uneven structure is very high, the prestressed concrete steel strand can not produced vertically move.2, object-line closely is wrapped in the periphery of twisted wire, when casting concrete, can combine closely with concrete again.3, object-line has certain intensity, has therefore all improved the bulk strength of concrete structure both ways.4, simple in structure, be easy to processing and manufacturing, cost of production is lower.
Description of drawings
Fig. 1 is the cross section structure for amplifying schematic diagram that the utility model provides.
Fig. 2 is the processing and manufacturing procedure structure schematic diagram that the utility model provides.
Among the figure, steel wire 1, twisted wire 2, object-line 3, stranding device 4.
The specific embodiment
As shown in Figure 1, this new structure prestressed concrete steel strand comprise by the some steel wires 1 stranded twisted wire that forms 2.These steel strand also comprise at least one object-line of being made by steel 3, and this object-line 3 shape in the shape of a spiral is wound on the periphery of described twisted wire 2.In the present embodiment, the quantity of steel wire 1 is any one in 3,7 or 19.The quantity of object-line 3 is one.
The external surface of the steel wire 1 here is a shiny surface, and the external surface of steel wire 1 can also be provided with cut certainly.Object-line 3 external surfaces here are shiny surface; Certainly the external surface of object-line 3 can also be provided with cut.
Because object-line 3 is wound on twisted wire 2 peripheries, is equivalent to form rough structure on twisted wire 2 surfaces.The concavo-convex degree of this uneven structure is very high, the prestressed concrete steel strand can not produced vertically move.Object-line 3 closely is wrapped in the periphery of twisted wire 2, when casting concrete, can combine closely with concrete again.Object-line 3 has certain intensity, has therefore all improved the bulk strength of concrete structure both ways.As shown in Figure 2, adopt stranding device 4 that some steel wires 1 are twisted together and form twisted wire 2, at the peripheral helical form coiling object-line 3 of twisted wire 2, can obtain this new structure prestressed concrete steel strand simultaneously.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as steel wire 1, twisted wire 2, object-line 3, stranding device 4 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (5)
1. new structure prestressed concrete steel strand, comprise by the stranded twisted wires that form of some steel wires (1) (2), it is characterized in that these steel strand also comprise at least one object-line of being made by steel (3), this object-line (3) shape in the shape of a spiral is wound on the periphery of described twisted wire (2).
2. new structure prestressed concrete steel strand according to claim 1 is characterized in that the external surface of described steel wire (1) is a shiny surface; The external surface of perhaps described steel wire (1) is provided with cut.
3. new structure prestressed concrete steel strand according to claim 1 and 2 is characterized in that, described object-line (3) external surface is a shiny surface; The external surface of perhaps described object-line (3) is provided with cut.
4. new structure prestressed concrete steel strand according to claim 3 is characterized in that, the quantity of described steel wire (1) is any one in 3,7 or 19.
5. new structure prestressed concrete steel strand according to claim 3 is characterized in that the quantity of described object-line (3) is one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205270004U CN201809902U (en) | 2010-09-13 | 2010-09-13 | Novel-structure prestressed concrete steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205270004U CN201809902U (en) | 2010-09-13 | 2010-09-13 | Novel-structure prestressed concrete steel strand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201809902U true CN201809902U (en) | 2011-04-27 |
Family
ID=43892843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205270004U Expired - Fee Related CN201809902U (en) | 2010-09-13 | 2010-09-13 | Novel-structure prestressed concrete steel strand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201809902U (en) |
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2010
- 2010-09-13 CN CN2010205270004U patent/CN201809902U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou people industry & Trade Co., Ltd. Assignor: Xie Jianqiang Contract record no.: 2013330000363 Denomination of utility model: Novel-structure prestressed concrete steel strand Granted publication date: 20110427 License type: Exclusive License Record date: 20131210 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20140913 |
|
| EXPY | Termination of patent right or utility model |