CN104164949A - Twisted steel with nominal diameter of not more than 20mm for preventing warping during hoop manufacturing - Google Patents
Twisted steel with nominal diameter of not more than 20mm for preventing warping during hoop manufacturing Download PDFInfo
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- CN104164949A CN104164949A CN201410419856.2A CN201410419856A CN104164949A CN 104164949 A CN104164949 A CN 104164949A CN 201410419856 A CN201410419856 A CN 201410419856A CN 104164949 A CN104164949 A CN 104164949A
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- reinforcing bar
- cross rib
- cross
- bar body
- nominal diameter
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Abstract
The invention discloses twisted steel with nominal diameter of not more than 20mm for preventing warping during hoop manufacturing. The twisted steel comprises a steel body, wherein transverse ribs are arranged on the surface of the steel body; a cross section of the steel body is a square of which four angles are in circular arc connection with one another; multiple transverse ribs which are uniformly and regularly distributed are respectively arranged on four side faces of the steel body; an included angle between the transverse ribs and an axis of the steel body is 35-75 degrees; at least two parallel transverse ribs are arranged in the transverse ribs on each side face; the center distance between two adjacent transverse ribs on each side face is between 0.5d and 0.8d, wherein d refers to the nominal diameter of the steel; a transverse rib is optionally selected from each side face of the steel body; axial projections of the four transverse ribs and the steel body form a circle of which the diameter deviation does not exceed 0.5mm. According to the twisted steel disclosed by the invention, the mechanical strength of the steel can be enhanced, and the steel is prevented from warping during hoop manufacturing, so that a stirrup in an expected shape is manufactured.
Description
Technical field
The present invention relates to the structure field of reinforcing bar, be specifically related to a kind ofly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm.
Background technology
At present, what system hoop generally adopted with indented bars is symmetrically arranged two sides Rib Reinforced shape reinforcing bar, between two row's crescent cross ribs, is provided with axial vertical rib, and the cross section projection approximation of this kind of reinforcing bar is oval.Two sides Rib Reinforced steel bar is being made rectangle or comparatively during the stirrup of complicated shape, because the projection approximation of its cross section is oval, so reinforcing bar on hoop bender during bending hoop each stress point be subject to the uneven center of circle of pointing to of force direction, make discontinuity, after causing system hoop, reinforcing bar produces warpage, make stirrup not in one plane and the two ends of stirrup can not overlap, finally can not get the stirrup of anticipated shape.After stirrup goes wrong, nominal diameter is no more than 10mm, 400MPa level still can be corrected by artificial with the reinforcing bar of interior intensity, but nominal diameter surpasses 10mm, the above high strength cast iron of 500MPa level is difficult to artificial rectification, thereby stirrup is scrapped, and has affected engineering construction progress.
Summary of the invention
Technical problem to be solved by this invention is: the hoop indented bars processed that provides a kind of nominal diameter to be no more than 20mm, it can prevent reinforcing bar warpage when system hoop, thereby can make the stirrup of anticipated shape.
For solving the problems of the technologies described above, the technical solution used in the present invention is: while preventing system hoop, the nominal diameter of warpage is no more than the indented bars of 20mm, comprise reinforcing bar body, on the surface of reinforcing bar body, be provided with cross rib, be characterized in: the cross section of reinforcing bar body is that four angles are all the square that circular arc connects, on four sides of reinforcing bar body, be respectively arranged with some cross ribs of even regular distribution, the angle of cross rib and reinforcing bar body axis is 35 °～75 °, and in the cross rib on each side, be at least provided with two parallel cross ribs, center to center distance on each side between the adjacent cross rib of any two-phase is all in the scope of (0.5d～0.8d), d is the nominal diameter of reinforcing bar, on each side of reinforcing bar body, select arbitrarily a cross rib, diameter deviation of the common composition of axis projection of these four cross ribs and reinforcing bar body is no more than the circle of 0.5mm, the implication that circular diameter deviation is no more than 0.5mm refers to that any two diameters differ on circle and is no more than 0.5mm.
Further, aforesaidly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, wherein: the shape of cross section of cross rib is trapezoidal, the height of cross rib peak is 0.05d～0.15d, the top width of cross rib is 0.05d～0.25d, and the formed angle of cross rib dual-side is≤90 °.
Further, aforesaidly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, wherein: on each side arbitrarily the center to center distance between the adjacent cross rib of two-phase all in the scope of (0.5d～0.7d).
Further, aforesaidly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, wherein: the cross rib on each side of reinforcing bar body is parallel distribution.
Further, aforesaidly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, wherein: between the adjacent cross rib on each side, distribute at an angle, this angle is not less than 10 °.
Further, aforesaidly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, wherein: the setting party of the cross rib on reinforcing bar body on relative two sides is to being contrary.
Advantage of the present invention is: use indented bars of the present invention, can make reinforcing bar when system hoop, on reinforcing bar, arbitrfary point is subject to force direction substantially all towards the center of circle of reinforcing steel bar bear face, make reinforcing steel bar bear become even, reinforcing bar warpage while preventing system hoop, thereby the stirrup that makes is kept in one plane and the two ends of stirrup can overlap, finally can make the stirrup of anticipated shape.
Accompanying drawing explanation
Fig. 1 is the be parallel to each other structural representation of the indented bars that distributes of the cross rib on reinforcing bar body of the present invention side.
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Fig. 3 is the structural representation of the indented bars that distributes at an angle between adjacent cross rib on reinforcing bar body of the present invention side.
Fig. 4 is the plan structure schematic diagram of Fig. 3.
Fig. 5 selects arbitrarily the structural representation of the axis projection of a cross rib and this four cross ribs and reinforcing bar body on each side of reinforcing bar body.
Fig. 6 is the structural representation of the cross section of cross rib of the present invention.
The specific embodiment
Below by specific embodiments and the drawings, the present invention is described in further detail.
Embodiment 1
As shown in Figure 1 and Figure 2, the indented bars that while preventing system hoop, the nominal diameter of warpage is 10mm, its nominal cross-sectional area is 78.5mm
2comprise reinforcing bar body 1, on the surface of reinforcing bar body 1, be provided with cross rib 2, be characterized in: the cross section of reinforcing bar body 1 is that four angles are all the square that circular arc connects, on four sides of reinforcing bar body 1, be respectively arranged with even parallel distribution and the identical some cross ribs 2 of shape, cross rib 2 is 67 ° with the angle β of reinforcing bar body 1 axis, and the maximum on each side between two adjacent parallel cross ribs 2 or minimum range are within the scope of (5～7) mm; As shown in Figure 5, Figure 6, the shape of cross section of cross rib 2 is trapezoidal, and the height h of cross rib 2 peaks is 0.7mm, and the top width L of cross rib 2 is 1.6mm, the formed angle α of cross rib 2 dual-side is 85 °, and the setting party of the cross rib 2 on reinforcing bar body 1 on relative two sides is to being contrary; As shown in Figure 5, select arbitrarily a cross rib 2 on reinforcing bar body 1 each side, diameter deviation of the common composition of axis projection of these four cross ribs 2 and reinforcing bar body 1 is not more than the circle of 0.22mm.
Embodiment 2
As shown in Figure 1 and Figure 2, the indented bars that while preventing system hoop, the nominal diameter of warpage is 13mm, its nominal cross-sectional area is 133mm
2comprise reinforcing bar body 1, on the surface of reinforcing bar body 1, be provided with cross rib 2, be characterized in: the cross section of reinforcing bar body 1 is that four angles are all the square that circular arc connects, on four sides of reinforcing bar body 1, be respectively arranged with even parallel distribution and the identical some cross ribs 2 of shape, cross rib 2 is 67 ° with the angle β of reinforcing bar body 1 axis, and the maximum on each side between two adjacent parallel cross ribs 2 or minimum range are within the scope of (6.5～9.1) mm; As shown in Figure 5, Figure 6, the shape of cross section of cross rib 2 is trapezoidal, and the height h of cross rib 2 peaks is 0.92mm, and the top width L of cross rib 2 is 1.7mm, the formed angle α of cross rib 2 dual-side is 85 °, and the setting party of the cross rib 2 on reinforcing bar body 1 on relative two sides is to being contrary; As shown in Figure 5, select arbitrarily a cross rib 2 on reinforcing bar body 1 each side, diameter deviation of the common composition of axis projection of these four cross ribs 2 and reinforcing bar body 1 is not more than the circle of 0.28mm.
Embodiment 3
As shown in Figure 1 and Figure 2, the indented bars that while preventing system hoop, the nominal diameter of warpage is 16mm, its nominal cross-sectional area is 201mm
2comprise reinforcing bar body 1, on the surface of reinforcing bar body 1, be provided with cross rib 2, be characterized in: the cross section of reinforcing bar body 1 is that four angles are all the square that circular arc connects, on four sides of reinforcing bar body 1, be respectively arranged with even parallel distribution and the identical some cross ribs 2 of shape, cross rib 2 is 67 ° with the angle β of reinforcing bar body 1 axis, and the maximum on each side between two adjacent parallel cross ribs 2 or minimum range are within the scope of (8～11.2) mm; As shown in Figure 5, Figure 6, the shape of cross section of cross rib 2 is trapezoidal, and the height h of cross rib 2 peaks is 1.14mm, and the top width L of cross rib 2 is 2.2mm, the formed angle α of cross rib 2 dual-side is 85 °, and the setting party of the cross rib 2 on reinforcing bar body 1 on relative two sides is to being contrary; As shown in Figure 5, select arbitrarily a cross rib 2 on reinforcing bar body 1 each side, diameter deviation of the common composition of axis projection of these four cross ribs 2 and reinforcing bar body 1 is not more than the circle of 0.38mm.
Embodiment 4
As shown in Figure 3, Figure 4, the indented bars that while preventing system hoop, the nominal diameter of warpage is 10mm, its nominal cross-sectional area is 78.5mm
2, comprise reinforcing bar body 1, the cross section of reinforcing bar body 1 is that four angles are all the square that circular arc connects, on four sides of reinforcing bar body 1, be respectively arranged with some first cross ribs 21 of even parallel distribution, and on each side, between adjacent the first cross rib 21, be also provided with second cross rib 22, on each side, all the second cross ribs 22 are also even parallel distributions, the first cross rib 21 is 50 ° with the angle β 1 of reinforcing bar body 1 axis, the second cross rib 22 is 65 ° with the angle β 2 of reinforcing bar body 1 axis, angle γ on each side between the first cross rib 21 and the second cross rib 22 is 15 °, minimum and maximum distance on each side between adjacent the first cross rib 21 of any two-phase and the second cross rib 22 is all between (5～7) mm, as shown in Figure 5, Figure 6, the shape of cross section of first, second cross rib 21,22 is trapezoidal, the height h of the peak of first, second cross rib 21,22 is 0.7mm, the top width L of first, second cross rib 21,22 is 1.6mm, the formed angle α of first, second cross rib 21,22 dual-side is 85 °, and the setting party of first, second cross rib 21,22 on reinforcing bar body 1 on relative two sides is to being contrary, as shown in Figure 5, select arbitrarily first cross rib 21 or the second cross rib 22 on reinforcing bar body 1 each side, diameter deviation of the common composition of axis projection of these four cross ribs and reinforcing bar body 1 is not more than the circle of 0.22mm.
Embodiment 5
As shown in Figure 3, Figure 4, the indented bars that while preventing system hoop, the nominal diameter of warpage is 13mm, its nominal cross-sectional area is 133mm
2, comprise reinforcing bar body 1, the cross section of reinforcing bar body 1 is that four angles are all the square that circular arc connects, on four sides of reinforcing bar body 1, be respectively arranged with some first cross ribs 21 of even parallel distribution, and on each side, between adjacent the first cross rib 21, be also provided with second cross rib 22, on each side, all the second cross ribs 22 are also even parallel distributions, the first cross rib 21 is 50 ° with the angle β 1 of reinforcing bar body 1 axis, the second cross rib 22 is 66 ° with the angle β 2 of reinforcing bar body 1 axis, angle γ on each side between the first cross rib 21 and the second cross rib 22 is 16 °, minimum and maximum distance on each side between adjacent the first cross rib 21 of any two-phase and the second cross rib 22 is all between (6.5～9.1) mm, as shown in Figure 5, Figure 6, the shape of cross section of first, second cross rib 21,22 is trapezoidal, the height h of the peak of first, second cross rib 21,22 is 0.92mm, the top width L of first, second cross rib 21,22 is 1.7mm, the formed angle α of first, second cross rib 21,22 dual-side is 85 °, and the setting party of first, second cross rib 21,22 on reinforcing bar body 1 on relative two sides is to being contrary, as shown in Figure 5, select arbitrarily first cross rib 21 or the second cross rib 22 on reinforcing bar body 1 each side, diameter deviation of the common composition of axis projection of these four cross ribs and reinforcing bar body 1 is not more than the circle of 0.28mm.
Embodiment 6
As shown in Figure 3, Figure 4, the indented bars that while preventing system hoop, the nominal diameter of warpage is 16mm, its nominal cross-sectional area is 201mm
2, comprise reinforcing bar body 1, the cross section of reinforcing bar body 1 is that four angles are all the square that circular arc connects, on four sides of reinforcing bar body 1, be respectively arranged with some first cross ribs 21 of even parallel distribution, and on each side, between adjacent the first cross rib 21, be also provided with second cross rib 22, on each side, all the second cross ribs 22 are also even parallel distributions, the first cross rib 21 is 52 ° with the angle β 1 of reinforcing bar body 1 axis, the second cross rib 22 is 67 ° with the angle β 2 of reinforcing bar body 1 axis, angle γ on each side between the first cross rib 21 and the second cross rib 22 is 15 °, minimum and maximum distance on each side between adjacent the first cross rib 21 of any two-phase and the second cross rib 22 is all between (8.0～11.2) mm, as shown in Figure 5, Figure 6, the shape of cross section of first, second cross rib 21,22 is trapezoidal, the height h of the peak of first, second cross rib 21,22 is 1.14mm, the top width L of first, second cross rib 21,22 is 2.2mm, the formed angle α of first, second cross rib 21,22 dual-side is 85 °, and the setting party of first, second cross rib 21,22 on reinforcing bar body 1 on relative two sides is to being contrary, as shown in Figure 5, select arbitrarily first cross rib 21 or the second cross rib 22 on reinforcing bar body 1 each side, diameter deviation of the common composition of axis projection of these four cross ribs and reinforcing bar body 1 is not more than the circle of 0.38mm.
Beneficial effect of the present invention is: the cross section of reinforcing bar body is that four angles are all the square that circular arc connects, and is conducive to design and the production of reinforcing bar; On four sides of reinforcing bar body, be all provided with cross rib, well the mechanical strength of reinforcing steel bar, improve flexural deformation performance and fabrication weldability energy, and increased reinforcing bar and concrete adhesion stress, what make that reinforcing bar is connected with concrete is more firm; Control the angle of inclination of cross rib and the distance between cross rib, long-pending in order to obtain suitable relative finned surface on the one hand, tightr for what cross rib was arranged on the other hand, prevent when system hoop, the bending wheel of hoop bender is directly pressed on reinforcing bar body 1, and make reinforcing steel bar bear inhomogeneous, cause reinforcing bar warpage; On each side of reinforcing bar body, select arbitrarily a cross rib, diameter deviation of the common composition of axis projection of these four cross ribs and reinforcing bar body is no more than the circle of 0.5mm, arrange like this and make reinforcing bar when system hoop, on reinforcing bar, arbitrfary point is subject to force direction substantially all towards the center of circle of reinforcing steel bar bear face, make reinforcing steel bar bear become even, reinforcing bar warpage while preventing system hoop, thereby the stirrup that makes is kept in one plane and the two ends of stirrup can overlap, finally can make the stirrup of anticipated shape.
Claims (7)
1. while preventing system hoop, the nominal diameter of warpage is no more than the indented bars of 20mm, comprise reinforcing bar body, on the surface of reinforcing bar body, be provided with cross rib, it is characterized in that: the cross section of reinforcing bar body is that four angles are all the square that circular arc connects, on four sides of reinforcing bar body, be respectively arranged with some cross ribs of even regular distribution, the angle of cross rib and reinforcing bar body axis is 35 °～75 °, and in the cross rib on each side, be at least provided with two parallel cross ribs, center to center distance on each side between the adjacent cross rib of any two-phase is all in the scope of (0.5d～0.8d), d is the nominal diameter of reinforcing bar, on each side of reinforcing bar body, select arbitrarily a cross rib, diameter deviation of the common composition of axis projection of these four cross ribs and reinforcing bar body is no more than the circle of 0.5mm.
2. according to claim 1ly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, it is characterized in that: the shape of cross section of cross rib is trapezoidal, the height of cross rib peak is 0.05d～0.15d, the top width of cross rib is 0.05d～0.25d, and the formed angle of cross rib dual-side is≤90 °.
3. according to claim 1 and 2ly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, is characterized in that: on each side arbitrarily the center to center distance between the adjacent cross rib of two-phase all in the scope of (0.5d～0.7d).
4. according to claim 1 and 2ly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, is characterized in that: the cross rib on each side of reinforcing bar body is parallel distribution.
5. according to claim 1 and 2ly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, is characterized in that: between the adjacent cross rib on each side, distribute at an angle, this angle is not less than 10 °.
6. according to claim 4ly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, is characterized in that: the setting party of the cross rib on reinforcing bar body on relative two sides is to being contrary.
7. according to claim 5ly prevent that the nominal diameter of when hoop system warpage is no more than the indented bars of 20mm, is characterized in that: the setting party of the cross rib on reinforcing bar body on relative two sides is to being contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410419856.2A CN104164949A (en) | 2014-08-25 | 2014-08-25 | Twisted steel with nominal diameter of not more than 20mm for preventing warping during hoop manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410419856.2A CN104164949A (en) | 2014-08-25 | 2014-08-25 | Twisted steel with nominal diameter of not more than 20mm for preventing warping during hoop manufacturing |
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| Publication Number | Publication Date |
|---|---|
| CN104164949A true CN104164949A (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410419856.2A Pending CN104164949A (en) | 2014-08-25 | 2014-08-25 | Twisted steel with nominal diameter of not more than 20mm for preventing warping during hoop manufacturing |
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| CN (1) | CN104164949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130739A (en) * | 2017-06-12 | 2017-09-05 | 姚圣法 | Suitable for the reinforcing bar of concrete |
| RU2814133C1 (en) * | 2023-11-07 | 2024-02-22 | Акционерное Общество "Евраз Объединенный Западно-Сибирский Металлургический Комбинат" | Periodic profile reinforcing bar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191114063A (en) * | 1911-06-13 | 1911-09-28 | Albert Mitrani | Improvements in and relating to Metal Bars for use in Ferro-concrete Construction. |
| AU5042285A (en) * | 1984-12-07 | 1986-06-12 | Societe Des Acieries De Montereau | Deformed metal reinforcement for reinforced concrete |
| CN2529934Y (en) * | 2002-03-13 | 2003-01-08 | 吴英剑 | High strength cold rolled reinforced bar with rib |
| CN101942887A (en) * | 2010-09-09 | 2011-01-12 | 天津市建科机械制造有限公司 | Four-side ribbed bar |
| CN204152087U (en) * | 2014-08-25 | 2015-02-11 | 江苏永钢集团有限公司 | When preventing from making hoop, the nominal diameter of warpage is no more than the indented bars of 20mm |
-
2014
- 2014-08-25 CN CN201410419856.2A patent/CN104164949A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191114063A (en) * | 1911-06-13 | 1911-09-28 | Albert Mitrani | Improvements in and relating to Metal Bars for use in Ferro-concrete Construction. |
| AU5042285A (en) * | 1984-12-07 | 1986-06-12 | Societe Des Acieries De Montereau | Deformed metal reinforcement for reinforced concrete |
| CN2529934Y (en) * | 2002-03-13 | 2003-01-08 | 吴英剑 | High strength cold rolled reinforced bar with rib |
| CN101942887A (en) * | 2010-09-09 | 2011-01-12 | 天津市建科机械制造有限公司 | Four-side ribbed bar |
| CN204152087U (en) * | 2014-08-25 | 2015-02-11 | 江苏永钢集团有限公司 | When preventing from making hoop, the nominal diameter of warpage is no more than the indented bars of 20mm |
Non-Patent Citations (1)
| Title |
|---|
| 中国人民共和国国家质量监督检验检疫总局等: "《GB/T 20065-2006 预应力混凝土用螺纹钢筋》", 5 February 2006, article "《GB/T 20065-2006 预应力混凝土用螺纹钢筋》" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130739A (en) * | 2017-06-12 | 2017-09-05 | 姚圣法 | Suitable for the reinforcing bar of concrete |
| RU2814133C1 (en) * | 2023-11-07 | 2024-02-22 | Акционерное Общество "Евраз Объединенный Западно-Сибирский Металлургический Комбинат" | Periodic profile reinforcing bar |
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Application publication date: 20141126 |