CN201901794U - Ultra low relaxation prestress steel strand with multi-layer wires - Google Patents
Ultra low relaxation prestress steel strand with multi-layer wires Download PDFInfo
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- CN201901794U CN201901794U CN2010202390019U CN201020239001U CN201901794U CN 201901794 U CN201901794 U CN 201901794U CN 2010202390019 U CN2010202390019 U CN 2010202390019U CN 201020239001 U CN201020239001 U CN 201020239001U CN 201901794 U CN201901794 U CN 201901794U
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Abstract
The utility model provides an ultra low relaxation prestress steel strand with multi-layer wires. The section of the ultra low relaxation prestress steel strand comprises three layers of steel wires, wherein a large-diameter steel wire is arranged at the center of the inner layer; a circle of small-diameter steel wire is arranged at the outer part of the large-diameter steel wire at the center of the inner layer; and a circle of medium-diameter steel wire is arranged at the outer circle of the small-diameter steel wire. The ultra low relaxation prestress steel strand is a large-specification low relaxation prestress steel strand with the structure of 1*19S(1+9+9); the product has high tensile strength and large bearing load; the ultra low relaxation prestress steel strand is used as an efficient and energy-saving steel, 30% steel can be saved compared with ordinary steel; the section of a structural component can be reduced; the use quantity of concrete is reduced; the span, the standard width and the stability of a building structure are increased; the ultra low relaxation prestress steel strand with the structure is in wire contact; and the state of force is more reasonable; therefore, the fatigue performance of the steel strand is improved; the ultra low relaxation prestress steel strand is applied to the field of the rock-stratum reinforcement of a mine or a coal mine, has the characteristics of high strength, high breaking force, high extensibility and low supporting cost, and plays a good role for increasing the anchoring force and improving the safety coefficient in the field of coal mines and rock-stratum reinforcement.
Description
Technical field
The utility model belongs to steel strand wires, the super low relaxed prestress steel strand of particularly a kind of multilayer silk.
Background technology
Generally use 1 * 7 structure, the prestress wire of specification below ф 17.8mm in fields such as bridge, ground anchorage, mine timberings at present, along with the construction of Longspan Bridge and large-scale water conservancy dykes and dams and the raising of mine support technology, 1 * 7 structural steel twisted wire is difficult to adapt to new demand at aspects such as tensile strength, rupture pull forces.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of multilayer silk super low relaxed prestress steel strand.For meeting the need of market, it is the big specification low relaxed prestress steel strand of a kind of 1 * 19S (1+9+9) structure, and specification is 17.8,19.3,20.3,21.8,28.6mm series of products (representing specification is ф 21.8mm),
The technical solution of the utility model is:
The super low relaxed prestress steel strand of a kind of multilayer silk, it is characterized in that: its section is made up of the compound steel line: the internal layer center is big footpath steel wire, steel wire outside, big footpath around the internal layer center is a circle path steel wire, is footpath steel wire in the circle in the outer ring of a circle path steel wire.
The internal layer center is a big footpath steel wire, is 9 path steel wires of a circle around the steel wire outside, big footpath at internal layer center, is footpath steel wire in 9 on the circle in the outer ring of a circle path steel wire.
The super low relaxed prestress steel strand of multilayer silk, its specification have Φ 17.8, Φ 19.3, Φ 20.3, Φ 21.8, Φ 28.6mm.
(1) the big directly specification of steel wire has the specification of Φ 5.16mm, path steel wire to have the specification of Φ 2.49mm, middle footpath steel wire that Φ 4.46mm is arranged.
(2) the big directly specification of steel wire has the specification of Φ 5.60mm, path steel wire to have the specification of Φ 2.70mm, middle footpath steel wire that Φ 4.80mm is arranged.
(3) the big directly specification of steel wire has the specification of Φ 5.89mm, path steel wire to have the specification of Φ 2.80mm, middle footpath steel wire that Φ 5.08mm is arranged.
(4) the big directly specification of steel wire has the specification of Φ 6.30mm, path steel wire to have the specification of Φ 3.06m, middle footpath steel wire that Φ 5.46mm is arranged.
(5) the big directly specification of steel wire has the specification of Φ 8.40mm, path steel wire to have the specification of Φ 4.20mm, middle footpath steel wire that Φ 7.15mm is arranged.
The utility model effect is:
The technical characterstic of the big specification low relaxed prestress steel strand of technical characterstic: 1 * 19S (1+9+9) structure is, it is formed by a core wire, nine steel wire of internal layer, nine cover wire primary twistings, be the line contact between the steel wire, through the stabilization processes under certain tension force, make steel strand wires reach the requirement of underrelaxation again.
This product tensile strength height, bearing load are big; Can save 30% steel as a kind of energy-efficient steel and common iron ratio; Can make that the structural elements cross section reduces, concrete amount reduces, and increases span, the standard width of a room in an old-style house and the stability of building structure.This structure low relaxed prestress steel strand is the line contact, and the steel wire stress more becomes rationally, thereby has improved the fatigue behaviour of steel strand wires.
The important technological parameters of the super low relaxed prestress steel strand of 1 * 19S-ф 21.8mm multilayer silk is:
1, tensile strength 〉=1810MPa;
2, whole steel strand wires maximum, force 〉=567KN;
3, (the Lo 〉=600mm) 〉=3.5% of percentage of total elongation under the maximum, force;
4, stress relaxation rate (70% nominal maximum, force 1000h)≤2.5%.
Be applied in the rock improvement field in mine, colliery, it has high strength, high Fracture Force, the high extension and the low characteristics of support cost, and good action is played in colliery and rock improvement field increase anchor force raising safety coefficient.
Description of drawings
Fig. 1 is the super low relaxed prestress steel strand section structure of a multilayer silk schematic diagram
The specific embodiment
Its section of the super low relaxed prestress steel strand 1 * 19S of a kind of multilayer silk (1+9+9) as shown in the figure is made up of the compound steel line: internal layer center 1 is big footpath steel wire, steel wire outside, big footpath around the internal layer center is a circle path steel wire 2, is footpath steel wire 3 in the circle in the outer ring of a circle path steel wire.
The internal layer center is a big footpath steel wire, is 9 path steel wires of a circle around the steel wire outside, big footpath at internal layer center, is footpath steel wire in 9 on the circle in the outer ring of a circle path steel wire.
The super low relaxed prestress steel strand of multilayer silk has following specification:
(1) the big directly specification of steel wire has the specification of Φ 5.16mm, path steel wire to have the specification of Φ 2.49mm, middle footpath steel wire that Φ 4.46mm is arranged.
(2) the big directly specification of steel wire has the specification of Φ 5.60mm, path steel wire to have the specification of Φ 2.70mm, middle footpath steel wire that Φ 4.80mm is arranged.
(3) the big directly specification of steel wire has the specification of Φ 5.89mm, path steel wire to have the specification of Φ 2.80mm, middle footpath steel wire that Φ 5.08mm is arranged.
(4) the big directly specification of steel wire has the specification of Φ 6.30mm, path steel wire to have the specification of Φ 3.06m, middle footpath steel wire that Φ 5.46mm is arranged.
(5) the big directly specification of steel wire has the specification of Φ 8.40mm, path steel wire to have the specification of Φ 4.20mm, middle footpath steel wire that Φ 7.15mm is arranged.
Claims (8)
1. super low relaxed prestress steel strand of multilayer silk, it is characterized in that: its section is made up of the compound steel line: the internal layer center is big footpath steel wire, steel wire outside, big footpath around the internal layer center is a circle path steel wire, is footpath steel wire in the circle in the outer ring of a circle path steel wire.
2. the super low relaxed prestress steel strand of multilayer silk according to claim 1, it is characterized in that: the internal layer center is a big footpath steel wire, around the steel wire outside, big footpath at internal layer center is 9 path steel wires of a circle, is footpath steel wire in 9 on the circle in the outer ring of a circle path steel wire.
3. the super low relaxed prestress steel strand of multilayer silk according to claim 1 is characterized in that: its specification is following a kind of in several: Φ 17.8, Φ 19.3, Φ 20.3, Φ 21.8, Φ 28.6mm.
4. the super low relaxed prestress steel strand of multilayer silk according to claim 1 is characterized in that: the specification of described big footpath steel wire has the specification of Φ 5.16mm, path steel wire to have the specification of Φ 2.49mm, middle footpath steel wire that Φ 4.46mm is arranged.
5. the super low relaxed prestress steel strand of multilayer silk according to claim 1 is characterized in that: the specification of described big footpath steel wire has the specification of Φ 5.60mm, path steel wire to have the specification of Φ 2.70mm, middle footpath steel wire that Φ 4.80mm is arranged.
6. the super low relaxed prestress steel strand of multilayer silk according to claim 1 is characterized in that: the specification of described big footpath steel wire has the specification of Φ 5.89mm, path steel wire to have the specification of Φ 2.80mm, middle footpath steel wire that Φ 5.08mm is arranged.
7. the super low relaxed prestress steel strand of multilayer silk according to claim 1 is characterized in that: the specification of described big footpath steel wire has the specification of Φ 6.30mm, path steel wire to have the specification of Φ 3.06m, middle footpath steel wire that Φ 5.46mm is arranged.
8. the super low relaxed prestress steel strand of multilayer silk according to claim 1 is characterized in that: the specification of described big footpath steel wire has the specification of Φ 8.40mm, path steel wire to have the specification of Φ 4.20mm, middle footpath steel wire that Φ 7.15mm is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202390019U CN201901794U (en) | 2010-06-28 | 2010-06-28 | Ultra low relaxation prestress steel strand with multi-layer wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202390019U CN201901794U (en) | 2010-06-28 | 2010-06-28 | Ultra low relaxation prestress steel strand with multi-layer wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201901794U true CN201901794U (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202390019U Expired - Lifetime CN201901794U (en) | 2010-06-28 | 2010-06-28 | Ultra low relaxation prestress steel strand with multi-layer wires |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911893A (en) * | 2014-04-14 | 2014-07-09 | 江苏法尔胜技术开发中心有限公司 | Steel wire rope for conveying belt |
| CN108252133A (en) * | 2017-12-08 | 2018-07-06 | 天津冶金集团中兴盛达钢业有限公司 | Super large-scale low relaxed prestress steel strand and its manufacturing method |
| CN109518499A (en) * | 2018-12-11 | 2019-03-26 | 天津冶金集团中兴盛达钢业有限公司 | A kind of 1860MPa grades of prestress wire and its manufacturing method |
-
2010
- 2010-06-28 CN CN2010202390019U patent/CN201901794U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911893A (en) * | 2014-04-14 | 2014-07-09 | 江苏法尔胜技术开发中心有限公司 | Steel wire rope for conveying belt |
| CN103911893B (en) * | 2014-04-14 | 2017-02-15 | 江苏法尔胜技术开发中心有限公司 | Steel wire rope for conveying belt |
| CN108252133A (en) * | 2017-12-08 | 2018-07-06 | 天津冶金集团中兴盛达钢业有限公司 | Super large-scale low relaxed prestress steel strand and its manufacturing method |
| CN109518499A (en) * | 2018-12-11 | 2019-03-26 | 天津冶金集团中兴盛达钢业有限公司 | A kind of 1860MPa grades of prestress wire and its manufacturing method |
| CN109518499B (en) * | 2018-12-11 | 2022-04-29 | 天津市新天钢中兴盛达有限公司 | 1860 MPa-level prestressed steel strand and manufacturing method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110720 |
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| CX01 | Expiry of patent term |