CN103104068A - Super-large diameter high-strength prestressed steel bar with spiral ribs - Google Patents
Super-large diameter high-strength prestressed steel bar with spiral ribs Download PDFInfo
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- CN103104068A CN103104068A CN2012105298395A CN201210529839A CN103104068A CN 103104068 A CN103104068 A CN 103104068A CN 2012105298395 A CN2012105298395 A CN 2012105298395A CN 201210529839 A CN201210529839 A CN 201210529839A CN 103104068 A CN103104068 A CN 103104068A
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Abstract
The invention provides a super-large diameter high-strength prestressed steel bar with spiral ribs. The super-large diameter high-strength prestressed steel bar comprises a bar body and the continuously bulged spiral ribs which are arranged on the surface of the bar body, wherein the nominal diameter of the bar body is 16mm-25mm, and the surface of the bar body is provided with the four continuously bulged spiral ribs, the four continuously bulged spiral ribs are at right angles to each other on the cross section of the bar body, the width of a single rib of each spiral rib is 3.5-7.0mm, the lead of each spiral rib is 65-130mm, and the dip angle of each spiral rib is 32 degrees to 35 degrees. The base circle diameter and deviation of the bar body are (15.75-24.53)mm and +/-(0.05-0.12)mm. The diameter and deviation of the outer contour of the bar body are (16.70-25.93)mm and +/-(0.10-0.22)mm. The super-large diameter high-strength prestressed steel bar has the beneficial effects of breaking through the limitation of the national standard nominal diameter 13mm, having very high tensile strength and yield strength and ideal performance indexes and being capable of meeting performance requirements under various construction conditions.
Description
Technical field
The present invention relates to a kind of prestressed steel bar, especially relate to a kind of super-large diameter high strength helical rib prestressed steel bar.
Background technology
The prestressed spiral rib steel muscle is owing to having higher tensile strength and yield strength, and China just succeeded in developing from the initial stage nineties, and was widely used in railway transportation and bridge construction.But the maximum nominal diameter of the GB of carrying out now is 13mm, tensile strength and yield strength or limited, along with the development of national high-speed railway and heavy haul railway transportation rock bolting, more and more higher to the performance requirement of spiral ribbed reinforced bar, be badly in need of a kind of larger diameter, more high-intensity spiral ribbed reinforced bar.
Summary of the invention
The purpose of this invention is to provide a kind of super-large diameter high strength helical rib prestressed steel bar.
Technical scheme of the present invention is: a kind of super-large diameter high strength helical rib prestressed steel bar, comprise the continuous protruding spiral ribs in barred body and described barred body surface, the nominal diameter of described barred body is 16mm～25mm, its surface is with the spiral ribs of four continuous projections, and described four spiral ribs are mutually 90 ° in the cross-section of described barred body.
Preferably, the single rib width of described spiral ribs is 3.5～7.0mm, and described spiral ribs helical pitch is 65～130mm, and described spiral ribs inclination angle is 32 °～35 °.
Preferably, the material of described barred body is 45Si
2Cr.
Preferably, the base circle diameter (BCD) of described barred body and deviation are (15.75～24.53) mm ± (0.05～0.12) mm.
Preferably, the outline diameter of described barred body and deviation are (16.70～25.93) mm ± (0.10～0.22) mm.
Preferably, the nominal diameter of described barred body is 16mm, and the single rib width of described spiral ribs is 3.5～4.5mm, and described spiral ribs helical pitch is 65～75mm, and described spiral ribs inclination angle is 35 °.
Preferably, the nominal diameter of described barred body is 18mm, and the single rib width of described spiral ribs is 4.0～5.0mm, and described spiral ribs helical pitch is 80～90mm, and described spiral ribs inclination angle is 33 °.
Preferably, the nominal diameter of described barred body is 20mm, and the single rib width of described spiral ribs is 4.5～5.5mm, and described spiral ribs helical pitch is 90～100mm, and described spiral ribs inclination angle is 33 °.
Preferably, the nominal diameter of described barred body is 22mm, and the single rib width of described spiral ribs is 5.0～6.0mm, and described spiral ribs helical pitch is 100～110mm, and described spiral ribs inclination angle is 33 °.
Preferably, the nominal diameter of described barred body is 25mm, and the single rib width of described spiral ribs is 6.0～7.0mm, and described spiral ribs helical pitch is 120～130mm, and described spiral ribs inclination angle is 32 °.
Advantage and good effect that the present invention has are:
Owing to adopting technique scheme, the present invention has broken through the limitation of GB nominal diameter 13mm, adopts larger diameter, has high tensile strength and yield strength, and property indices is desirable, can satisfy the performance requirement under various execution conditions.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is sectional view of the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and the specific embodiments.
Embodiment 1:
As depicted in figs. 1 and 2, the present invention includes by 45Si
2The barred body 1 that Cr makes and described barred body 1 four continuous protruding spiral ribs 2 in surface, described four spiral ribs 2 are mutually 90 ° in the cross-section of described barred body 1, and the base circle diameter (BCD) of described barred body 1 and deviation are (15.75～24.53) mm ± (0.05～0.12) mm.The outline diameter of described barred body 1 and deviation are (16.70～25.93) mm ± (0.10～0.22) mm.The nominal diameter of described barred body 1 is 16mm, and the single rib width of described spiral ribs 2 is 3.5～4.5mm, and described spiral ribs 2 helical pitches are 65～75mm, and described spiral ribs 2 inclination angles are 35 degree.Mechanical property of the present invention is as follows: tensile strength is at 1230～1570MPa, regulation plastic elongation intensity is at 1100～1420MPa, knee flawless in the time of crooked 160 °-180 °, bending diameter is 10 times of described barred body 1 nominal diameter, primary strength is 70% of nominal tensile strength, the 1000h relaxation rate is not more than 2.0%, and under maximum, force, percentage of total elongation is not less than 3.5%, and elongation after fracture is not less than 10%.
The present invention has broken through the limitation of GB nominal diameter 13mm, adopts larger diameter, has high tensile strength and yield strength, and yield tensile ratio is not less than 90%, and property indices is desirable, can satisfy the performance requirement under various execution conditions.
Embodiment 2:
The nominal diameter of described barred body 1 is 18mm, and the single rib width of described spiral ribs 2 is 4.0～5.0mm, and described spiral ribs 2 helical pitches are 80～90mm, and described spiral ribs 2 inclination angles are 33 °.Other are with embodiment 1.
Embodiment 3:
The nominal diameter of described barred body 1 is 20mm, and the single rib width of described spiral ribs 2 is 4.5～5.5mm, and described spiral ribs 2 helical pitches are 90～100mm, and described spiral ribs 2 inclination angles are 33 °.Other are with embodiment 1.
Embodiment 4:
The nominal diameter of described barred body 1 is 22mm, and the single rib width of described spiral ribs 2 is 5.0～6.0mm, and described spiral ribs 2 helical pitches are 100～110mm, and described spiral ribs 2 inclination angles are 33 °.Other are with embodiment 1.
Embodiment 5:
The nominal diameter of described barred body 1 is 25mm, and the single rib width of described spiral ribs 2 is 6.0～7.0mm, and described spiral ribs 2 helical pitches are 120～130mm, and described spiral ribs 2 inclination angles are 32 °.Other are with embodiment 1.
Above embodiment has been described in detail the present invention, but described content is only preferred embodiment of the present invention, can not be considered to be used to limiting practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., within all should still belonging to patent covering scope of the present invention.
Claims (10)
1. super-large diameter high strength helical rib prestressed steel bar, comprise the continuous protruding spiral ribs (2) in barred body (1) and described barred body (1) surface, it is characterized in that: the nominal diameter of described barred body (1) is 16mm～25mm, its surface is with the spiral ribs (2) of four continuous projections, and described four spiral ribs (2) are mutually 90 ° in the cross-section of described barred body (1).
2. super-large diameter high strength helical rib prestressed steel bar according to claim 1, it is characterized in that: the single rib width of described spiral ribs (2) is 3.5～7.0mm, described spiral ribs (2) helical pitch is 65～130mm, and described spiral ribs (2) inclination angle is 32 °～35 °.
3. super-large diameter high strength helical rib prestressed steel bar according to claim 1, it is characterized in that: the material of described barred body (1) is 45Si
2Cr.
4. super-large diameter high strength helical rib prestressed steel bar according to claim 1 is characterized in that: the base circle diameter (BCD) of described barred body (1) and deviation are (15.75～24.53) mm ± (0.05～0.12) mm.
5. super-large diameter high strength helical rib prestressed steel bar according to claim 1 is characterized in that: the outline diameter of described barred body (1) and deviation are (16.70～25.93) mm ± (0.10～0.22) mm.
6. any described super-large diameter high strength helical rib prestressed steel bar according to claim 1-5, it is characterized in that: the nominal diameter of described barred body (1) is 16mm, the single rib width of described spiral ribs (2) is 3.5～4.5mm, described spiral ribs (2) helical pitch is 65～75mm, and described spiral ribs (2) inclination angle is 35 °.
7. any described super-large diameter high strength helical rib prestressed steel bar according to claim 1-5, it is characterized in that: the nominal diameter of described barred body (1) is 18mm, the single rib width of described spiral ribs (2) is 4.0～5.0mm, described spiral ribs (2) helical pitch is 80～90mm, and described spiral ribs (2) inclination angle is 33 °.
8. any described super-large diameter high strength helical rib prestressed steel bar according to claim 1-5, it is characterized in that: the nominal diameter of described barred body (1) is 20mm, the single rib width of described spiral ribs (2) is 4.5～5.5mm, described spiral ribs (2) helical pitch is 90～100mm, and described spiral ribs (2) inclination angle is 33 °.
9. any described super-large diameter high strength helical rib prestressed steel bar according to claim 1-5, it is characterized in that: the nominal diameter of described barred body (1) is 22mm, the single rib width of described spiral ribs (2) is 5.0～6.0mm, described spiral ribs (2) helical pitch is 100～110mm, and described spiral ribs (2) inclination angle is 33 °.
10. any described super-large diameter high strength helical rib prestressed steel bar according to claim 1-5, it is characterized in that: the nominal diameter of described barred body (1) is 25mm, the single rib width of described spiral ribs (2) is 6.0～7.0mm, described spiral ribs (2) helical pitch is 120～130mm, and described spiral ribs (2) inclination angle is 32 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105298395A CN103104068A (en) | 2012-12-07 | 2012-12-07 | Super-large diameter high-strength prestressed steel bar with spiral ribs |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105298395A CN103104068A (en) | 2012-12-07 | 2012-12-07 | Super-large diameter high-strength prestressed steel bar with spiral ribs |
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| CN103104068A true CN103104068A (en) | 2013-05-15 |
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| CN2012105298395A Pending CN103104068A (en) | 2012-12-07 | 2012-12-07 | Super-large diameter high-strength prestressed steel bar with spiral ribs |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2235467Y (en) * | 1995-11-06 | 1996-09-18 | 周越辉 | Spiral ribs steel bar used for prestressed concrete |
| CN2778523Y (en) * | 2005-04-20 | 2006-05-10 | 谢志峰 | Spiral rib prestressed steel rod with screw threads on two ends |
| CN201339271Y (en) * | 2008-12-26 | 2009-11-04 | 天津市银龙预应力钢材集团有限公司 | High-strength pre-stress heat-treatment steel bar for high-speed railway track system |
| CN201560532U (en) * | 2009-07-17 | 2010-08-25 | 天津市银龙预应力钢材集团有限公司 | Large-diameter high-intensity prestress spiral rib steel wire for high-speed railway track |
| CN101818545A (en) * | 2010-04-29 | 2010-09-01 | 天津市银龙预应力钢材集团有限公司 | Prestressed spiral rib steel wire with large diameter and high strength and manufacturing method thereof |
| CN201924514U (en) * | 2011-01-19 | 2011-08-10 | 河北景鹏预应力钢绞线有限公司 | Large-diameter spiral ribbed steel wire |
| CN202299132U (en) * | 2011-09-28 | 2012-07-04 | 天津银龙预应力材料股份有限公司 | Helical rib steel wire for medium-strength prestressed concrete |
-
2012
- 2012-12-07 CN CN2012105298395A patent/CN103104068A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2235467Y (en) * | 1995-11-06 | 1996-09-18 | 周越辉 | Spiral ribs steel bar used for prestressed concrete |
| CN2778523Y (en) * | 2005-04-20 | 2006-05-10 | 谢志峰 | Spiral rib prestressed steel rod with screw threads on two ends |
| CN201339271Y (en) * | 2008-12-26 | 2009-11-04 | 天津市银龙预应力钢材集团有限公司 | High-strength pre-stress heat-treatment steel bar for high-speed railway track system |
| CN201560532U (en) * | 2009-07-17 | 2010-08-25 | 天津市银龙预应力钢材集团有限公司 | Large-diameter high-intensity prestress spiral rib steel wire for high-speed railway track |
| CN101818545A (en) * | 2010-04-29 | 2010-09-01 | 天津市银龙预应力钢材集团有限公司 | Prestressed spiral rib steel wire with large diameter and high strength and manufacturing method thereof |
| CN201924514U (en) * | 2011-01-19 | 2011-08-10 | 河北景鹏预应力钢绞线有限公司 | Large-diameter spiral ribbed steel wire |
| CN202299132U (en) * | 2011-09-28 | 2012-07-04 | 天津银龙预应力材料股份有限公司 | Helical rib steel wire for medium-strength prestressed concrete |
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Application publication date: 20130515 |