CN2526385Y - Dumbbell type steel fibre - Google Patents
Dumbbell type steel fibre Download PDFInfo
- Publication number
- CN2526385Y CN2526385Y CN 02232882 CN02232882U CN2526385Y CN 2526385 Y CN2526385 Y CN 2526385Y CN 02232882 CN02232882 CN 02232882 CN 02232882 U CN02232882 U CN 02232882U CN 2526385 Y CN2526385 Y CN 2526385Y
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- China
- Prior art keywords
- steel fibre
- indenture
- dumb
- dumbbell
- interlude
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- Reinforcement Elements For Buildings (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The utility model relates to a dumbbell 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 dumbbell terminator which can be wedge shape or triangle shape; and the central section of the steel fiber has a dent. Examinations show that: by using the steel fiber of the utility model, pressive strength, incipient crack bending resistant strength, ultimate bending strength, tensile splitting strength and shear strength are significantly enhanced.
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 dumb-bell 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 improves day by day.
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 dumb-bell 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 a dumbbell terminal (1) and (4) is arranged respectively respectively.
In specific embodiment, described dumbbell terminal (1) and (4) are the flared wedge shape dumbbell of the end points terminal from two ends of the interlude of linearity.
On the upper surface (2) of described steel fibre interlude, be provided with indenture (3).
On the soffit (5) of described steel fibre interlude, be provided with indenture (6).
Described indenture (3) and upper and lower being interspersed of indenture (6).
Dumbbell terminal (1 ') and (4 ') are the flared triangle dumbbell of the end points terminal from two ends of the interlude of linearity.
On the upper surface (2 ') of described steel fibre interlude, be provided with indenture (3 ').
On the soffit (5 ') 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 from accompanying drawing 1, the interlude of described steel fibre is a linearity, end points from two ends of the interlude of linearity, form with broken line is outwards launched, the last dumbbell end that forms a wedge shape at the two ends of steel fibre respectively.The dumbbell end of described wedge shape is a primary structure feature of the present utility model.In steel fibrous concrete, utilize this architectural feature to take on the effect of anchoring, and improve the performance of every mechanical index of steel fibrous concrete with this.
In addition, from accompanying drawing 1, can also see, on the interlude upper surface (2) of described steel fibre, be provided with indenture (3).Described indenture (3) should lack unsuitable many, and suitable shallow unsuitable dark, quantity≤5 of general indenture (3) (indenture (6) that comprises the back) its objective is the intensity that will guarantee steel fibre self.But special circumstances will make an exception, and the quantity of indenture when steel fibre is longer (3) can be slightly some more.It is additional structural features of the present utility model that indenture (3) is set, and described indenture (3) can further play the anchoring effect, can further improve the performance of every mechanical index of steel fibrous concrete whereby.Can see also that in this accompanying drawing be provided with indenture (6) on the interlude soffit (5) of described steel fibre, its reason is the same, repeats no more.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 mechanical property 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.Saved indenture (3) and indenture (6) in the present embodiment, other architectural feature is identical with first embodiment, repeats no more herein.
Accompanying drawing 3 is the 3rd embodiment of the present utility model.Only be with the first embodiment difference; Present embodiment changes wedge shape dumbbell terminal into triangle dumbbell terminal.Described triangle dumbbell terminal also plays the anchoring effect.Here it may be noted that described triangle dumbbell terminal laterally more elongated, both material-saving also can be brought into play enough anchorage effects.Because other architectural feature is identical with first embodiment, also repeat no more.
Shown in the accompanying drawing 4 is the 4th embodiment of the present utility model.Compare with the 3rd embodiment, its difference only is that present embodiment has saved indenture (3 ') and indenture (6 ').So also repeat no more at this.
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.
Experiment showed, and use steel fibrous concrete of the present utility model, its compressive strength, incipient crack flexural strength, ultimate bending strength, splitting tensile strength, shear strength have all had significant raising.
Claims (10)
1. dumb-bell 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 a dumbbell terminal (1) and (4) is arranged respectively respectively.
2. dumb-bell shape steel fibre according to claim 1 is characterized in that: described dumbbell terminal (1) and (4) are the flared wedge shape dumbbell of the end points terminal from two ends of the interlude of linearity.
3. dumb-bell 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. dumb-bell shape steel fibre according to claim 1 is characterized in that: be provided with indenture (6) on the soffit (5) of described steel fibre interlude.
5. according to claim 3,4 described dumb-bell shape steel fibres, it is characterized in that: described indenture (3) and upper and lower being interspersed of indenture (6).
6. dumb-bell shape steel fibre according to claim 1 is characterized in that: dumbbell terminal (1 ') and (4 ') are the flared triangle dumbbell of the end points terminal from two ends of the interlude of linearity.
7. dumb-bell 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. dumb-bell shape steel fibre according to claim 6 is characterized in that: be provided with indenture (6 ') on the soffit (5 ') of described steel fibre interlude.
9. according to claim 7,8 described dumb-bell shape steel fibres, it is characterized in that: described indenture (3 ') and upper and lower being interspersed of indenture (6 ').
10. dumb-bell shape steel fibre according to claim 1 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 02232882 CN2526385Y (en) | 2002-05-23 | 2002-05-23 | Dumbbell type steel fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02232882 CN2526385Y (en) | 2002-05-23 | 2002-05-23 | Dumbbell type steel fibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2526385Y true CN2526385Y (en) | 2002-12-18 |
Family
ID=33708158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02232882 Expired - Fee Related CN2526385Y (en) | 2002-05-23 | 2002-05-23 | Dumbbell type steel fibre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2526385Y (en) |
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 |
| CN102803629A (en) * | 2009-06-12 | 2012-11-28 | 贝卡尔特公司 | High elongation fibres |
| CN108316560A (en) * | 2018-03-30 | 2018-07-24 | 上海市城市建设设计研究总院（集团）有限公司 | Steel fibre for improving ultra-high performance concrete tensile property |
-
2002
- 2002-05-23 CN CN 02232882 patent/CN2526385Y/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| CN102803629A (en) * | 2009-06-12 | 2012-11-28 | 贝卡尔特公司 | High elongation fibres |
| CN102803629B (en) * | 2009-06-12 | 2016-05-18 | 贝卡尔特公司 | High percentage of elongation fiber |
| CN102459776B (en) * | 2009-06-12 | 2016-08-10 | 贝卡尔特公司 | There is the high elongation fibre of good anchorage |
| CN108316560A (en) * | 2018-03-30 | 2018-07-24 | 上海市城市建设设计研究总院（集团）有限公司 | Steel fibre for improving ultra-high performance concrete tensile property |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20021218 Termination date: 20110523 |