CN203008234U - SCS (steel concrete structure) square concrete-filled steel tube column based on CFRP (carbon fiber reinforced plastic) fabric reinforcement - Google Patents
SCS (steel concrete structure) square concrete-filled steel tube column based on CFRP (carbon fiber reinforced plastic) fabric reinforcement Download PDFInfo
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- CN203008234U CN203008234U CN 201220734237 CN201220734237U CN203008234U CN 203008234 U CN203008234 U CN 203008234U CN 201220734237 CN201220734237 CN 201220734237 CN 201220734237 U CN201220734237 U CN 201220734237U CN 203008234 U CN203008234 U CN 203008234U
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Abstract
The utility model discloses an SCS (steel concrete structure) square concrete-filled steel tube column based on CFRP (carbon fiber reinforced plastic) reinforcement. The SCS square concrete-filled steel tube column comprises a square steel tube, a round steel tube, and an external integral reinforcement layer which is formed by a concrete structure filled between the square steel tube and the round steel tube and a CFRP fabric winding the outer side wall of the square steel tube, wherein the square steel tube and the round steel tube are coaxial; and the wall thicknesses of both the square steel tube and the round steel tube are 4-100 mm. The ratio of A1 to A2 is equal to 1: (0.6-0.8), wherein A1 is equal to a1+b1, a1 is the cross section of the square steel tube, and b1 is the cross section of a hollow part of the inner side of the square steel tube; and A2 is equal to pi*r2, and r is the outer diameter of the round steel tube. The SCS square concrete-filled steel tube column is simple in structure, reasonable in design, convenient to construct, relatively low in construction cost, excellent in mechanical property and excellent in using effect, and can solve the problems of high dead weight, poor connecting property between a steel tube and concrete, poor hoop function of the steel tube to the concrete, poor endurance and the like in existing square concrete-filled steel tube columns.
Description
Technical field
The utility model relates to a kind of steel core concrete column, especially relates to a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth.
Background technology
Concrete filled steel tube refers to the structure formed after fill concrete in steel pipe.Steel and concrete bi-material make up weakness each other mutually, give full play to strong point each other, make concrete filled steel tube have very high bearing capacity, and have good mechanical property.Nowadays, encased structures ocean platform with greatly across structures such as, heavy duty, light bridges in an increasingly wide range of applications, and the encased structures adopted mainly contains circle, square, square equal cross-section form.But the defects such as current used encased structures part ubiquity dead load is large, construction inconvenience, thereby limited to a great extent the development and application of encased structures.
Wherein, Concrete Filled Square Steel Tubular has the following advantages: the first, square steel tube concrete beam post joint form is simple, is easy to construction, and especially, in frame construction, the advantage of this node can be brought into play well; The second, the relative inertness square in cross section is larger, resistance to overturning and bending-resistant better performances; Three, there is good anti-seismic performance and ductile performance.But square steel pipe is poor to the effect of contraction of core concrete, cripling easily occurs, and steel using amount is larger, dead load is large, thereby makes the development and application of Concrete-Filled Square Steel Tube be restricted.
To sum up, the several problems of concrete-filled steel square tubular column ubiquity that nowadays adopted: the first, square steel pipe to concrete cuff effect a little less than, cripling easily occurs, and the globality of combining structure is inadequate; The second, the deadweight of concrete-filled steel square tubular column is bigger than normal, thereby has limited the physical dimension of cylinder; Three, the fire resistance of steel is poor.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth is provided, it is simple in structure, reasonable in design, easy construction and construction cost is lower, good mechanical performance, result of use are good, the problems such as switching performance is poor between great, steel pipe and concrete, steel pipe is little to concrete cuff effect, durability is poor that can solve that existing rectangular steel tube coagulation post exists.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth, it is characterized in that: comprise rectangular steel tube, be set in the round steel pipe of rectangular steel tube inside, by the concrete structure that is filled in the concreting moulding in cavity between rectangular steel tube and round steel pipe and the external overall back-up coat that formed by the CFRP cloth be wrapped on described rectangular steel tube lateral wall, between the lateral wall of described external overall back-up coat and described rectangular steel tube, with bonding way, be fastenedly connected, and described round steel pipe is laid in the middle inside of rectangular steel tube, described rectangular steel tube and round steel pipe are coaxial laying, the external diameter of described round steel pipe is Ф 102mm～Ф 2000mm, the wall thickness of described rectangular steel tube and round steel pipe is 4mm～100mm, and A1 ︰ A2=1 ︰ (0.6～0.8), A1=a1+b1 wherein, the cross-sectional area that the cross-sectional area that a1 is rectangular steel tube and b1 are the inboard hollow bulb of rectangular steel tube, A2=π r
2and the external diameter that r is round steel pipe.
Above-mentioned a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth, it is characterized in that: described concrete structure is carbon fiber reinforced concrete.
Above-mentioned a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth, it is characterized in that: the wall thickness of described rectangular steel tube and round steel pipe all is preferably 18mm～25mm, and A1 is preferably 4m
2～10m
2.
Above-mentioned a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth is characterized in that: the cross section of described rectangular steel tube is square.
Above-mentioned a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth, it is characterized in that: described rectangular steel tube and round steel pipe all are vertically to laying.
The utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and construction cost is lower.
2, the slim and graceful and antidetonation of structure and torsional property are good.
3, easy construction and result of use are good, and the mechanical property of the SCS rectangular steel tube coagulation post of institute's construction molding is good and structure is slim and graceful, passes through poured into a mould concrete between inside and outside two-layer steel pipe and connects into as a whole.During actual the use, the utility model can substantially improve encased structures from defects such as great, construction inconvenience, its utilize sectional area that rectangular steel tube is larger provide larger cross section antitorque with the bending resistance moment of inertia, utilize round steel pipe to effectively reduce volume of concrete and alleviate deadweight, and sandwich concrete is linked to be integral body in the three dimension stress state and by interior rectangular steel tube.Thereby, the utility model can give full play to the form that Concrete Filled Square Steel Tubular has simple, be easy to the advantage such as construction, the relative inertness square in cross section is larger, antidetonation, torsional property are good, can effectively overcome that switching performance between steel pipe and its inner concrete is poor, outside steel pipe is to the shortcoming such as the concrete cuff effect in inside is little, the utility model utilizes built-in round steel pipe to strengthen concrete cuff effect, and utilizes the effective volume of concrete of round steel pipe to alleviate the purpose of deadweight.
4, the concrete of pouring into a mould between interior rectangular steel tube both can adopt ordinary concrete, also can adopt carbon fiber reinforced concrete.And, the content that adds carbon fiber in the carbon fiber reinforced concrete adopted be the quality percentage composition in 0.6% left and right, concrete tensile strength and tension ductility can be improved respectively to 30% and 25%.Carbon fiber is to be formed through chopped mechanical cutting by carbon fiber filament, length generally be take mm as unit, the suede that profile is certain-length must, there is lightweight, high-strength, Gao Mo, corrosion-resistant, conduction, advantages of good shielding performance, wave absorbtion high, and have and be uniformly dispersed, feeding manner is various, the simple advantage of technique.Add appropriate chopped carbon fiber in concrete, can improve concrete tensile strength, anti-intensity and shock resistance, reduce drying shrinkage, improve anti-wear performance, and this concrete is light than the ordinary concrete quality, has certain heat-proof quality and damping performance.
5, adopt the steel core concrete column load larger, member section is larger.Cause steel using amount bigger than normal.Based on the CFRP(carbon fibre composite) after cloth carries out integral reinforcing to encased structures, it is the combined sleeve that CFRP cloth and inwall are steel that outer steel cylinder just forms outer wall, this combined sleeve can make the intensity of its inner institute fluid concrete be given full play to, especially the turnover of the high strength characteristics of fiber in fibrous concrete can be given full play to, the CFRP cloth adopted can effectively reduce the wall thickness of outside steel pipe, thereby can effectively alleviate the weight of encased structures, also can play antisepsis, further improved the durability of concrete filled steel tube simultaneously.
6, applied widely, can effectively be suitable for to the construction such as bridge, building construction and later stage reinforcing process.
In sum, the utility model is simple in structure, reasonable in design, easy construction and construction cost is lower, good mechanical performance, result of use are good, the various problems such as switching performance is poor between great, steel pipe and concrete, steel pipe is little to concrete cuff effect, durability is poor that can effectively solve that existing rectangular steel tube coagulation post exists.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is top structure schematic diagram of the present utility model.
Description of reference numerals:
1-rectangular steel tube; 2-round steel pipe; 3-concrete structure;
4-external overall back-up coat.
The specific embodiment
As shown in Figure 1 and Figure 2, the utility model comprises rectangular steel tube 1, is set in the round steel pipe 2 of rectangular steel tube 1 inside, by the concrete structure 3 that is filled in the concreting moulding in cavity between rectangular steel tube 1 and round steel pipe 2 and the external overall back-up coat 4 that formed by the CFRP cloth be wrapped on described rectangular steel tube 1 lateral wall, between the lateral wall of described external overall back-up coat 4 and described rectangular steel tube 1, with bonding way, be fastenedly connected, and described round steel pipe 2 is laid in the middle inside of rectangular steel tube 1.Described rectangular steel tube 1 and round steel pipe 2 are coaxial laying; The external diameter of described round steel pipe 2 is Ф 102mm～Ф 2000mm, the wall thickness of described rectangular steel tube 1 and round steel pipe 2 is 4mm～100mm, and A1 ︰ A2=1 ︰ (0.6～0.8), A1=a1+b1 wherein, the cross-sectional area that the cross-sectional area that a1 is rectangular steel tube 1 and b1 are rectangular steel tube 1 inboard hollow bulb, A2=π r
2and the external diameter that r is round steel pipe 2.
In the present embodiment, described concrete structure 3 is carbon fiber reinforced concrete.
The external diameter of described round steel pipe 2 is that Ф 200mm and its wall thickness are 15mm.During actual the use, can according to specific needs, the external diameter of described round steel pipe 2 be adjusted accordingly in the scope of Ф 102mm～Ф 2000mm, and the wall thickness of round steel pipe 2 is adjusted accordingly in the scope of 4mm～100mm.
Actually add man-hour, the wall thickness of described rectangular steel tube 1 and round steel pipe 2 all is preferably 18mm～25mm, and A1 is preferably 4m
2～10m
2.
In the present embodiment, the cross-sectional area of described rectangular steel tube 1 is 6m
2, the wall thickness of described rectangular steel tube 1 is 20mm.
During actual the use, can be according to specific needs by A1 at 4m
2～10m
2scope in adjust accordingly, and the wall thickness of rectangular steel tube 1 is adjusted accordingly in the scope of 4mm～100mm.
In the present embodiment, A1 ︰ A2=1 ︰ 0.7.During actual the use, can according to specific needs, the ratio value of A1 ︰ A2 be adjusted accordingly in the scope of 1 ︰ (0.6～0.8).
In the present embodiment, the cross section of described rectangular steel tube 1 is square.That is to say A1=D
2, the lateral wall length of side that wherein D is described rectangular steel tube 1.
During actual the use, the cross section of described rectangular steel tube 1 can be also rectangle.
In the present embodiment, described rectangular steel tube 1 and round steel pipe 2 all are vertically to laying.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solutions of the utility model.
Claims (5)
1. a SCS square steel tube concrete column of reinforcing based on CFRP cloth, it is characterized in that: comprise rectangular steel tube (1), be set in the inner round steel pipe (2) of rectangular steel tube (1), by the concrete structure (3) that is filled in the concreting moulding in cavity between rectangular steel tube (1) and round steel pipe (2) and the external overall back-up coat (4) formed by the CFRP cloth be wrapped on described rectangular steel tube (1) lateral wall, between the lateral wall of described external overall back-up coat (4) and described rectangular steel tube (1), with bonding way, be fastenedly connected, and described round steel pipe (2) is laid in the middle inside of rectangular steel tube (1), described rectangular steel tube (1) and round steel pipe (2) are coaxial laying, the external diameter of described round steel pipe (2) is Ф 102mm～Ф 2000mm, the wall thickness of described rectangular steel tube (1) and round steel pipe (2) is 4mm～100mm, and A1 ︰ A2=1 ︰ (0.6～0.8), A1=a1+b1 wherein, the cross-sectional area that the cross-sectional area that a1 is rectangular steel tube (1) and b1 are the inboard hollow bulb of rectangular steel tube (1), A2=π r
2and the external diameter that r is round steel pipe (2).
2. according to a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth claimed in claim 1, it is characterized in that: described concrete structure (3) is carbon fiber reinforced concrete.
3. according to the described a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth of claim 1 or 2, it is characterized in that: the wall thickness of described rectangular steel tube (1) and round steel pipe (2) all is preferably 18mm～25mm, and A1 is preferably 4m
2～10m
2.
4. according to the described a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth of claim 1 or 2, it is characterized in that: the cross section of described rectangular steel tube (1) is square.
5. according to the described a kind of SCS square steel tube concrete column of reinforcing based on CFRP cloth of claim 1 or 2, it is characterized in that: described rectangular steel tube (1) and round steel pipe (2) all are vertically to laying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734237 CN203008234U (en) | 2012-12-27 | 2012-12-27 | SCS (steel concrete structure) square concrete-filled steel tube column based on CFRP (carbon fiber reinforced plastic) fabric reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734237 CN203008234U (en) | 2012-12-27 | 2012-12-27 | SCS (steel concrete structure) square concrete-filled steel tube column based on CFRP (carbon fiber reinforced plastic) fabric reinforcement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203008234U true CN203008234U (en) | 2013-06-19 |
Family
ID=48599843
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734237 Expired - Fee Related CN203008234U (en) | 2012-12-27 | 2012-12-27 | SCS (steel concrete structure) square concrete-filled steel tube column based on CFRP (carbon fiber reinforced plastic) fabric reinforcement |
Country Status (1)
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|---|---|
| CN (1) | CN203008234U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593003A (en) * | 2016-12-23 | 2017-04-26 | 武汉大学 | Method for reinforcing steel pipe column through external-sleeving square steel pipe concrete |
| CN106677552A (en) * | 2016-12-23 | 2017-05-17 | 武汉大学 | Method for solidifying steel pipe column through external sleeveing of circular steel pipe concrete |
| CN110376033A (en) * | 2019-07-10 | 2019-10-25 | 东北石油大学 | A kind of high intensity fracture hole type rock core and preparation method thereof |
-
2012
- 2012-12-27 CN CN 201220734237 patent/CN203008234U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593003A (en) * | 2016-12-23 | 2017-04-26 | 武汉大学 | Method for reinforcing steel pipe column through external-sleeving square steel pipe concrete |
| CN106677552A (en) * | 2016-12-23 | 2017-05-17 | 武汉大学 | Method for solidifying steel pipe column through external sleeveing of circular steel pipe concrete |
| CN110376033A (en) * | 2019-07-10 | 2019-10-25 | 东北石油大学 | A kind of high intensity fracture hole type rock core and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |