CN2526386Y - End hook type steel fibre - Google Patents
End hook type steel fibre Download PDFInfo
- Publication number
- CN2526386Y CN2526386Y CN 02232883 CN02232883U CN2526386Y CN 2526386 Y CN2526386 Y CN 2526386Y CN 02232883 CN02232883 CN 02232883 CN 02232883 U CN02232883 U CN 02232883U CN 2526386 Y CN2526386 Y CN 2526386Y
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- CN
- China
- Prior art keywords
- steel fibre
- end hook
- soffit
- interlude
- indenture
- 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.)
- Expired - Lifetime
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The utility model relates to an end hook type steel fibre, which is strip shape. The characteristics of the utility model are that: the central of the steel fiber is straight shape and the two ends of the steel fiber are respectively provided with a cockup end hook; the upper surfaces and the lower surfaces of the cockup end hooks are respectively positioned in a plane; and the upper surface of the cockup end hooks are higher than the upper surface of the central steel fiber and the lower surfaces of the cockup end hooks are higher than the lower surface of the central steel fiber. Examinations show that: by using the steel fiber concrete of the utility model, pressing strength and incipient crack bending resistant strength are increased by more than 27 percent, ultimate bending strength is increased by 67.7 percent, tensile splitting strength is enhanced by 92.6 percent and shear strength is enhanced by 101.6 percent.
Description
The utility model relates to a kind of steel fibre, more particularly, the utility model relate to a kind of have given shape, can be uniformly distributed in randomly in the concrete to increase the end hook shape steel fibre of concrete strength.In International Patent Classification (IPC), should be divided into the E04C group.
At present, along with the development of Foundation Design construction with to the going deep into of concrete research, steel fibrous concrete is widely used.Because the advantage of steel fibrous concrete is significant, so steel fibre manufacturer is many, but shortcoming is arranged also: steel fibre and the concrete bonding effect is undesirable, anchored force is poor, the steel fibre kind is aging, single, and performance is difficult to satisfy the requirement that engineering construction order benefit improves.
The purpose of this utility model is to overcome the deficiency of prior art, provides a kind of performance more superior special steel fiber, more particularly provides the more good end hook shape steel fibre of a kind of performance.
The purpose of this utility model is achieved through the following technical solutions: described steel fibre is a fine strip shape, and main feature is: the interlude of described steel fibre is a linearity, at the two ends of steel fibre an end hook that is upturned is arranged respectively respectively.
In specific embodiment, upper surface of the end hook that described two ends are upturned respectively (1) and upper surface (4) are positioned on the same horizontal plane, soffit of the end hook that described two ends are upturned respectively (5) and soffit (8) are positioned on the same horizontal plane, upper surface of the end hook that described two ends are upturned respectively (1) and upper surface (4) are higher than the upper surface (2) of the interlude of steel fibre, soffit of the end hook that described two ends are upturned respectively (5) and soffit (8) are higher than the soffit (7) of the interlude of steel fibre, and the upper surface of the interlude of described steel fibre (2) is higher than the soffit (5) and the soffit (8) of the end hook that described two ends are upturned respectively.
On the upper surface (2) of described steel fibre interlude, be provided with indenture (3).
On the soffit (7) of described steel fibre interlude, be provided with indenture (6).
Described indenture (3) and upper and lower being interspersed of indenture (6).
Upper surface of the end hook that described two ends are upturned respectively (1 ') and upper surface (4 ') are positioned on the same horizontal plane, soffit of the end hook that described two ends are upturned respectively (5 ') and soffit (8 ') are positioned on the same horizontal plane, upper surface of the end hook that described two ends are upturned respectively (1 ') and upper surface (4 ') are higher than the upper surface (2 ') of the interlude of steel fibre, soffit of the end hook that described two ends are upturned respectively (5 ') and soffit (8 ') are higher than the soffit (7 ') of the interlude of steel fibre, and the upper surface of the interlude of described steel fibre (2 ') is lower than the soffit (5 ') and the soffit (8 ') of the end hook that described two ends are upturned respectively.
On the upper surface (2 ') of described steel fibre interlude, be provided with indenture (3 ').
On the soffit (7 ') of described steel fibre interlude, be provided with indenture (6 ').
Described indenture (3 ') and upper and lower being interspersed of indenture (6 ').
The nominal length of described steel fibre is respectively 20mm, 25mm, 30mm, 35mm, 40mm, the diameter of described steel fibre or equivalent diameter d
fBe 0.3～0.6mm, the draw ratio l of described steel fibre
f/ d
fBe 50～80, described steel fibre comprises carbon structure steel fibre, alloy structure steel fibre and stainless steel fibre.
Below in conjunction with drawings and Examples the utility model is further specified, wherein:
Accompanying drawing 1 is the elevation of first embodiment of the present utility model of amplification.
Accompanying drawing 2 is elevations of second embodiment of the present utility model of amplification.
Accompanying drawing 3 is elevations of the 3rd embodiment of the present utility model of amplification.
Accompanying drawing 4 is elevations of the 4th embodiment of the present utility model of amplification.
Below in conjunction with first embodiment also is that most preferred embodiment of the present utility model is introduced design feature of the present utility model in detail: can see that from accompanying drawing 1 interlude of described steel fibre is a linearity, at two ends of the interlude of linearity an end hook that is upturned be arranged respectively respectively.
Can see that from accompanying drawing 1 upper surface (1) and the upper surface (4) of the end hook that is upturned respectively at described two ends are positioned on the same horizontal plane.Soffit of the end hook that described two ends are upturned respectively (5) and soffit (8) equally also are positioned on the same horizontal plane.In addition, also can see: upper surface of the end hook that described two ends are upturned respectively (1) and upper surface (4) are higher than the upper surface (2) of the interlude of steel fibre.Soffit of the end hook that described two ends are upturned respectively (5) and soffit (8) are higher than the soffit (7) of the interlude of steel fibre.At last, also be even more important, exactly: the upper surface of the interlude of described steel fibre (2) is higher than the soffit (5) and the soffit (8) of the end hook that described two ends are upturned respectively.This means just benefit of described two end hooks design ground: described steel fibre has two end hooks, but described end hook should not be agley too far! Its purpose is: first will guarantee the ideal tensile strength of steel fibre self, guarantees further on this good basis that then the steel fibrous concrete of realizing use side hook-type steel fibre obtains best every mechanical property.
Particularly point out, it is the of paramount importance technical characterictic of the utility model that an end hook respectively is set respectively at two ends, and the major function of described two end hooks has been anchoring effects.The concrete of use side hook-type steel fibre, its every mechanical property has all had significant raising.
In addition, in accompanying drawing 1, can also see, on the upper surface (2) of described steel fibre interlude, be provided with indenture (3).Described indenture (3) is that of the present utility model assisting adds technical characterictic, and indenture (3) also plays the anchoring effect, can further improve every mechanical property of steel fibrous concrete whereby.In addition, also be provided with indenture (6) on the soffit (7) of described steel fibre interlude, its effect is the same with indenture (3), repeats no more herein.Above-mentioned indenture (3) and indenture (6) are suitable shallow unsuitable dark, and should lack should not be many, and its quantity is less than or equals 5.Can also see described indenture (3) and upper and lower being interspersed of indenture (6) in the figure, can guarantee like this under the condition that realizes steel fibre self suitable strength, to realize better every performance of steel fibrous concrete.In other words, take this structure design, can guarantee under the performance indications of same steel fibrous concrete, the volume volume of steel fibre is minimum, just saves material most, and cost is minimum in other words; Also we can say, under the same condition of the volume volume of steel fibre, can realize the optimum value of the performance of steel fibrous concrete.
Accompanying drawing 2 is second embodiment of the present utility model.Omitted indenture (3) and indenture (6) in this embodiment, other architectural feature all is same as first embodiment, and its function is identical with principle, repeats no more.
Accompanying drawing 4 is the 4th embodiment of the present utility model.The difference of present embodiment and the 3rd embodiment just is: omitted indenture (3 ') and indenture (6 ') in this embodiment.Other architectural feature is all identical.Because function and principle are similar, also repeat no more.
The nominal length that is noted that steel fibre is respectively 20mm, 25mm, 30mm, 35mm, 40mm, the diameter of described steel fibre or equivalent diameter d
fBe 0.3～0.6mm, the draw ratio l of described steel fibre
f/ d
fBe 50～80.Above-mentioned parameter is the general status of criterion.But,, can produce the product of other specifications and models fully according to designing requirement.
Point out that in passing the raw material of steel fibre should meet the requirement of national respective steel product, this is the basis.Raw material of the present utility model can be steel bands, also can be steel wires.For different raw material, its requirement is different, if use steel band, its tensile strength 〉=550MPa; If the use steel wire, its tensile strength is greater than 1000MPa.
Experimental results show that, use steel fibrous concrete of the present utility model, its compressive strength, incipient crack flexural strength have improved more than 27% respectively, and ultimate bending strength has improved 67.7%, splitting tensile strength has improved 92.6%, shear strength has improved 101.6%.
Claims (10)
1. end hook shape steel fibre, described steel fibre is a fine strip shape, it is characterized in that: the interlude of described steel fibre is a linearity, at the two ends of steel fibre an end hook that is upturned is arranged respectively respectively.
2. end hook shape steel fibre according to claim 1, it is characterized in that: upper surface of the end hook that described two ends are upturned respectively (1) and upper surface (4) are positioned on the same horizontal plane, soffit of the end hook that described two ends are upturned respectively (5) and soffit (8) are positioned on the same horizontal plane, upper surface of the end hook that described two ends are upturned respectively (1) and upper surface (4) are higher than the upper surface (2) of the interlude of steel fibre, soffit of the end hook that described two ends are upturned respectively (5) and soffit (8) are higher than the soffit (7) of the interlude of steel fibre, and the upper surface of the interlude of described steel fibre (2) is higher than the soffit (5) and the soffit (8) of the end hook that described two ends are upturned respectively.
3. end hook shape steel fibre according to claim 1 is characterized in that: be provided with indenture (3) on the upper surface (2) of described steel fibre interlude.
4. end hook shape steel fibre according to claim 1 is characterized in that: be provided with indenture (6) on the soffit (7) of described steel fibre interlude.
5. according to claim 3,4 described end hook shape steel fibres, it is characterized in that: described indenture (3) and upper and lower being interspersed of indenture (6).
6. end hook shape steel fibre according to claim 1, it is characterized in that: upper surface of the end hook that described two ends are upturned respectively (1 ') and upper surface (4 ') are positioned on the same horizontal plane, soffit of the end hook that described two ends are upturned respectively (5 ') and soffit (8 ') are positioned on the same horizontal plane, upper surface of the end hook that described two ends are upturned respectively (1 ') and upper surface (4 ') are higher than the upper surface (2 ') of the interlude of steel fibre, soffit of the end hook that described two ends are upturned respectively (5 ') and soffit (8 ') are higher than the soffit (7 ') of the interlude of steel fibre, and the upper surface of the interlude of described steel fibre (2 ') is lower than the soffit (5 ') and the soffit (8 ') of the end hook that described two ends are upturned respectively.
7. end hook shape steel fibre according to claim 6 is characterized in that: be provided with indenture (3 ') on the upper surface (2 ') of described steel fibre interlude.
8. end hook shape steel fibre according to claim 6 is characterized in that: be provided with indenture (6 ') on the soffit (7 ') of described steel fibre interlude.
9. according to claim 7,8 described end hook shape steel fibres, it is characterized in that: described indenture (3 ') and upper and lower being interspersed of indenture (6 ').
10. end hook shape steel fibre according to claim 1, it is characterized in that: the nominal length of described steel fibre is respectively 20mm, 25mm, 30mm, 35mm, 40mm, the diameter of described steel fibre or equivalent diameter d
fBe 0.3～0.6mm, the draw ratio l of described steel fibre
f/ d
fBe 50～80, described steel fibre comprises carbon structure steel fibre, alloy structure steel fibre and stainless steel fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02232883 CN2526386Y (en) | 2002-05-23 | 2002-05-23 | End hook type steel fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02232883 CN2526386Y (en) | 2002-05-23 | 2002-05-23 | End hook type steel fibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2526386Y true CN2526386Y (en) | 2002-12-18 |
Family
ID=33708159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02232883 Expired - Lifetime CN2526386Y (en) | 2002-05-23 | 2002-05-23 | End hook type steel fibre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2526386Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459776A (en) * | 2009-06-12 | 2012-05-16 | 贝卡尔特公司 | High elongation fibre with good anchorage |
| CN107716790A (en) * | 2017-10-26 | 2018-02-23 | 吉林建筑大学 | A kind of method of manufacturing side hook steel fibre |
-
2002
- 2002-05-23 CN CN 02232883 patent/CN2526386Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459776A (en) * | 2009-06-12 | 2012-05-16 | 贝卡尔特公司 | High elongation fibre with good anchorage |
| CN102459776B (en) * | 2009-06-12 | 2016-08-10 | 贝卡尔特公司 | There is the high elongation fibre of good anchorage |
| CN107716790A (en) * | 2017-10-26 | 2018-02-23 | 吉林建筑大学 | A kind of method of manufacturing side hook steel fibre |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120523 Granted publication date: 20021218 |