CN202831403U - FRP (fiber reinforce plastic) pipe-concrete-steel pipe combination column - Google Patents
FRP (fiber reinforce plastic) pipe-concrete-steel pipe combination column Download PDFInfo
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- CN202831403U CN202831403U CN 201220530164 CN201220530164U CN202831403U CN 202831403 U CN202831403 U CN 202831403U CN 201220530164 CN201220530164 CN 201220530164 CN 201220530164 U CN201220530164 U CN 201220530164U CN 202831403 U CN202831403 U CN 202831403U
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- pipe
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 68
- 239000010959 steel Substances 0.000 title claims abstract description 68
- 239000000835 fiber Substances 0.000 title abstract description 7
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 101100042630 Caenorhabditis elegans sin-3 gene Proteins 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000011376 self-consolidating concrete Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 239000009798 Shen-Fu Substances 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to a novel combination component and aims to provide an FRP (fiber reinforce plastic) pipe-concrete-steel pipe combination column (a double-pipe combination column for short). The double-pipe combination column comprises a steel pipe which is arranged in an FRP pipe, wherein the direction of the steel pipe is as same as the central axial line of the FRP pipe, and concrete is filled in a cavity between the steel pipe and the FRP pipe. The utility model fully exerts the characteristics of an FRP composite material, concrete and a steel material, and has some characteristics which can not be matched by those of other components; for example, the FRP pipe is unlikely to generate local buckling and has a function of preventing a component from generating brittle failure, and also has strong corrosion resistance; due to the steel pipe in the component so that the component can bear partial load during the construction and connection of a beam column joint and a foundation is more convenient; the hollow part of the component can serve as a pipe channel, and the section hollow ratio (namely the ratio of partial internal diameter to external diameter of concrete) can generally be in a range of 0.6-0.8 so that the self mass of the component is greatly reduced.
Description
Technical field
The utility model relates to a kind of new structural members.More particularly, the utility model relates to FRP pipe-concrete-steel pipe zygostyle (being called for short two-tube coupled column).
Background technology
Along with the development of science and technology and the continuous progress of building trade, the combined member that takes full advantage of new type FRP (fibre reinforced plastics, Fiber Reinforced Plastics) composite material and traditional building material (such as concrete) characteristics has become a kind of trend of engineering in using.FRP is a kind of Novel advanced composite material, good mechanical performance, and chemical stability is better.The tensile strength of FRP is very high, is the twice of structural steel at least, wherein CFRP(carbon fibre reinforced composite commonly used) can be up to ten times or more than; The density of FRP only has 1/5th of steel; The resistance to corrosion of FRP is strong, can intercept electromagnetic radiation, good endurance.The anti-fatigue ability of CFRP also is better than structural steel.Therefore, in concrete component, has more obvious advantage in conjunction with other traditional materials such as utilizing new type FRP composite material ratio employing steel pipe.
Utility model Inner holds
The purpose of this utility model is to provide a kind of method of making new type FRP pipe-concrete-steel pipe zygostyle and simply designing this combined member.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions.
The utility model provides a kind of FRP pipe-concrete-steel pipe zygostyle, comprises steel pipe, and this steel pipe is located at the inside of FRP pipe, and steel pipe is identical with the central axial direction of FRP pipe, fill concrete in the cavity between steel pipe and the FRP pipe.
As a kind of improvement, the cross section of described steel pipe and FRP pipe is circle.
As a kind of improvement, the cross section of described steel pipe and FRP pipe is rectangle, the corresponding limit layout that is parallel to each other between two rectangles.
As a kind of improvement, the cross section of described steel pipe is rounded, and the cross section of FRP pipe is rectangular.
As a kind of improvement, described steel pipe overlaps with the central axis of FRP pipe.
As a kind of improvement, the radius-thickness ratio of described FRP pipe is not more than 200.
As a kind of improvement, the radius-thickness ratio of described steel pipe is less than 70.
The beneficial effects of the utility model are:
In the utility model, the cross section of member can have according to the actual loading situation multiple multi-form.Owing to giving full play to FRP composite material, concrete, steel separately, this two-tube coupled column has the incomparable characteristics of some other members.Be difficult for occuring cripling such as the FRP pipe, its effect of contraction makes member have better ductility, can be used as shear reinforcement under geological process, and the effect that prevents member generation brittle fracture is arranged, the FRP pipe has stronger decay resistance simultaneously, can be used as the permanent template of concreting in construction; The existence of the steel pipe of component inside makes member can receiving portion give the load in man-hour, also more be convenient to bean column node or with being connected of basis; The member cavity can be used as pipeline passway, and the ratio of external diameter (the concrete part internal diameter with) is usually desirable 0.6 ~ 0.8 because the cross section hollow rate, has greatly alleviated the quality of member self.Existing test shows, the confined concrete bearing capacity of axial compression member can improve 3 ~ 4 times.The simple bending member is in the situation that depression of bearing force is very little, and mid-span deflection can reach 1/15 of span.These advantages show that this two-tube coupled column has extraordinary application prospect.
Description of drawings
Fig. 1 is the schematic cross-section of concentric circles coupled column.
Fig. 2 is that outer tube is the schematic cross-section of foursquare coupled column.
Fig. 3 is that inner and outer pipes all is the schematic cross-section of foursquare coupled column.
Fig. 4 is the two-tube coupled column schematic cross-section of non-concentric circles.
Fig. 5 is the making flow chart of FRP pipe-concrete-steel pipe zygostyle.
Fig. 6 is for being groined type yoke and member mutual alignment schematic diagram.
Fig. 7 is the block diagram of the present invention's detailed process of being used to design.
Reference numeral among the figure is: 1 FRP pipe; 2 concrete; 3 steel pipes; 4 well cabinet frames; 5 timber wedges; 6 pull bars; 7 carbon cloths; 8 node welds.
The specific embodiment
With reference to the accompanying drawings, the below is described in detail the utility model.
FRP pipe 1-concrete 2-steel pipe 3 coupled columns in the utility model comprise being sheathed on the steel pipe 3 that FRP manages 1 inside that steel pipe 3 is identical with the central axial direction of FRP pipe 1, fill concrete 2 in the cavity between steel pipe 3 and the FRP pipe 1.
The two-tube coupled column that the utility model relates to, FRP pipe 1 and steel pipe 3 are arranged in concentric circles, FRP pipe 1 is the prefabricated pipe of various different fibers, inner steel pipe 3 is seamless steel pipe or welded steel pipe, and middle concrete 2 can be selected ordinary concrete or the contour performance concrete of self-compacting concrete according to space size.Make two-tube coupled column, must strictly control the relative position between outside FRP pipe 1 and the inner steel pipe 3, reduce the error of structure manufacture, need to make the accessories such as a series of pull bar 6, template for this reason.Design the built-in fitting that connects for node at interior steel pipe 3 during making also extremely important for construction.In view of dual string may all be short column in application mostly, the utility model provides the Simple Method for Design that can be used for calculating the dual string short composite columns based on the analysis result of fibre section method.
Two-tube coupled column manufacturing process is as follows: at first utilize built-in fitting and steel pipe 3 welding on the base, make steel pipe 3 axially and base plane maintenance vertical relation; Then externally put prefabricated FRP pipe 1, regulate the relative position with inner steel pipe 3, make both be concentric circles, utilization is fixed on the base, FRP pipe 1 temporary fixed parts are all around fixed member one end, the clear spacing of controlling mutually perpendicular both direction FRP pipe 1 and steel pipe 3 at the top achieves the goal, make groined type yoke (in twos parallel batten spacing equal respectively steel pipe 3 and FRP manages 1 external diameter) and be installed in the top, make batten block respectively FRP pipe 1, steel pipe 3, direction clear distance of recycling timber wedge 5 controls.Vertical direction mixes up first two tube pitch with it, frictional force is controlled the clear distance between two pipes between the batten that produces with the pulling force of 4 pull bars 6 between bight and the base and FRP, this side is because be difficult for taking out before the form removal afterwards without timber wedge 5, base pressure is larger when considering concreting 2 simultaneously, FRP pipe 1 as be not held down the concrete 2 that is probably overflowed by the bottom and lift; Then concreting 2, size according to clear distance between FRP pipe 1 and the steel pipe 3, can adopt commercial concrete or self-compacting concrete, and cause itself and FRP to manage the disengagement of 1 inwall for preventing that concrete 2 from shrinking, can mix the microdilatancy Admixture, because may there be the slit at FRP pipe 1 position that contacts with base, can adopt glass cement to be sealed before building in addition, build rear maintenance with general concrete component; Next form removal, because FRP manages 1 cutting, the end easily shifted to an earlier date failure when load was larger, should adopt carbon cloth 7 materials such as grade that component ends is reinforced; The connector that last steel pipe 3 welding outstanding in inside and beam etc. are connected should carry out certain reinforcement at the position of joints of connection.
Describe the parameter of two-tube coupled column in analysis, usually represent with L such as length, FRP manages 1 internal-and external diameter and is respectively D and D
f, axial, elastic modulus in circular direction is respectively E
Xc, eff, E
θ t, eff, actual rings is to breaking strain ε
Ru Middle concrete 2 is without constraint and retrain respectively f of lower peak strength
Co, f
Cc, be ε without lower strain corresponding to peak strength of constraint
Co, initial elastic modulus is E
c, the limit compressive strain under the simple bending is ε
Cu, b Inner steel pipe 3 external diameters and thickness are respectively D
s, t
s, yield strength is f
y, modulus of elasticity is E
sMember two ends eccentricity of loading is respectively e
1, e
2, and agreement e
2Forever get on the occasion of and absolute value greater than e
1For the requirement of sectional dimension, common outside FRP manages 1 radius-thickness ratio (D
f/ t
f) get and be not more than 200, the hollow rate χ (D of cross section concrete 2
s/ D) value in 0.6 ~ 0.8 scope, the radius-thickness ratio (D of steel pipe 3
s/ t
s) should be less than 70.
In order to take full advantage of the binding effect of FRP pipe 1, may be short column mostly when using in the engineering, the utility model suggestion adopts following method to calculate the compressive load-carrying capacity of normal cross section of two-tube coupled column.
M in the formula
u, N
uBe eccentric distance e
2The time ultimate bearing capacity, R and R
sBe corresponding D and D
sSection radius, A=π R
2, A
f, A
sBe respectively the section area of FRP pipe 1, steel pipe 3.2 π θ, 2 π θ ＇ are respectively the central angle of the corresponding FRP pipe 1 of pressure zone concrete 2 equivalent rectangular stress block height and steel pipe 3, other parameter alpha
1, θ
c, θ
t, σ
f, θ
f, m
fBe respectively calculated as follows
α
1=1.16-0.18f
cc,ec/f
co
0≤θ
c=1.25(θ-0.50)/χ
0≤θ
t=-1.42(θ-0.44)/χ+0.53≤1
σ
f=E
xc,effε
cu,ec
θ
f=0.75θ+0.03
m
f=sin(πθ
f)
ε in the formula
Cu, b, f
Cc, ecBeing respectively eccentric throw is e
2The time confined concrete 2 limit compressive strain and ultimate strength.
The Beams Oblique Section Carrying Capacity of two-tube coupled column can calculate the bearing capacity V of inner steel pipe 3 and concrete 2 parts according to the relevant regulations of standard GB50608
CsCan be by concrete 2 standard conservative estimations, the shear-carrying capacity V of prefabricated FRP pipe 1
fCan be calculated as follows:
V≤V
cs+V
f
γ in the formula
iFor FRP manages 1 i layer fiber and members shaft to the clockwise angle that is, E
Ft, t
FtBe respectively i layer machine direction apparent elastic modulus and thickness, ε
FaFor fiber allows stretching strain.When known internal force or known members size, can calculate two-tube coupled column comparatively simply according to said method, but concrete steps Shenfu figure.
Claims (7)
1. FRP pipe-concrete-steel pipe zygostyle comprises steel pipe, it is characterized in that, this steel pipe socket is located at the inside of FRP pipe, and steel pipe is identical with the central axial direction of FRP pipe, fill concrete in the cavity between steel pipe and the FRP pipe.
2. FRP pipe-concrete according to claim 1-steel pipe zygostyle is characterized in that, the cross section of described steel pipe and FRP pipe is circle.
3. FRP pipe-concrete according to claim 1-steel pipe zygostyle is characterized in that, the cross section of described steel pipe and FRP pipe is rectangle, the corresponding limit layout that is parallel to each other between two rectangles.
4. FRP pipe-concrete according to claim 1-steel pipe zygostyle is characterized in that, the cross section of described steel pipe is rounded, and the cross section of FRP pipe is rectangular.
5. according to claim 1 to the FRP pipe-concrete described in 4 any one-steel pipe zygostyle, it is characterized in that, described steel pipe overlaps with the central axis of FRP pipe.
6. FRP pipe-concrete according to claim 5-steel pipe zygostyle is characterized in that, the radius-thickness ratio of described FRP pipe is not more than 200.
7. FRP pipe-concrete according to claim 5-steel pipe zygostyle is characterized in that, the radius-thickness ratio of described steel pipe is less than 70.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220530164 CN202831403U (en) | 2012-10-16 | 2012-10-16 | FRP (fiber reinforce plastic) pipe-concrete-steel pipe combination column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220530164 CN202831403U (en) | 2012-10-16 | 2012-10-16 | FRP (fiber reinforce plastic) pipe-concrete-steel pipe combination column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202831403U true CN202831403U (en) | 2013-03-27 |
Family
ID=47943147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220530164 Expired - Fee Related CN202831403U (en) | 2012-10-16 | 2012-10-16 | FRP (fiber reinforce plastic) pipe-concrete-steel pipe combination column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202831403U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453092A (en) * | 2014-12-02 | 2015-03-25 | 深圳大学 | Novel FRP pipe-lightweight concrete-structural steel combined member |
| CN105003027A (en) * | 2015-07-29 | 2015-10-28 | 温州大学 | FRP restrained pipe regenerated mixed concrete combination column |
| CN105442755A (en) * | 2015-07-30 | 2016-03-30 | 孙晓林 | Recycled concrete column |
| CN105507456A (en) * | 2016-01-29 | 2016-04-20 | 广东工业大学 | Composite shear wall with FRP (fiber reinforced polymer) tubes and metal tubes arranged inside |
| CN106013615A (en) * | 2016-06-21 | 2016-10-12 | 大连理工大学 | Self-stressing-concrete-FRP-pipe-constrained combination column |
| CN106481024A (en) * | 2016-11-29 | 2017-03-08 | 南昌大学 | A kind of FRP pipe and half prefabricated half cast-in-place construction refuse regenerated concrete combination column and preparation method |
| CN106836642A (en) * | 2017-01-20 | 2017-06-13 | 天津大学 | A kind of concrete filled steel tube combined special-shaped column of anti-buckling cant timber connection |
| CN107178180A (en) * | 2017-07-20 | 2017-09-19 | 广东工业大学 | The concrete column that a kind of FRP pipes are combined with steel pipe |
| CN110528779A (en) * | 2019-08-09 | 2019-12-03 | 太原理工大学 | A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness |
| CN112609564A (en) * | 2020-12-25 | 2021-04-06 | 福州大学 | CFRP-UHPC double-limb thin-wall high pier column |
| CN116241016A (en) * | 2022-12-08 | 2023-06-09 | 广州大学 | FRP pipe-high-strength rubber concrete-high-strength steel pipe double-pipe combined column and preparation method thereof |
-
2012
- 2012-10-16 CN CN 201220530164 patent/CN202831403U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453092A (en) * | 2014-12-02 | 2015-03-25 | 深圳大学 | Novel FRP pipe-lightweight concrete-structural steel combined member |
| CN105003027A (en) * | 2015-07-29 | 2015-10-28 | 温州大学 | FRP restrained pipe regenerated mixed concrete combination column |
| CN105442755A (en) * | 2015-07-30 | 2016-03-30 | 孙晓林 | Recycled concrete column |
| CN105442755B (en) * | 2015-07-30 | 2018-04-10 | 广城建设集团有限公司 | Regeneration concrete post |
| CN105507456A (en) * | 2016-01-29 | 2016-04-20 | 广东工业大学 | Composite shear wall with FRP (fiber reinforced polymer) tubes and metal tubes arranged inside |
| CN106013615A (en) * | 2016-06-21 | 2016-10-12 | 大连理工大学 | Self-stressing-concrete-FRP-pipe-constrained combination column |
| CN106481024A (en) * | 2016-11-29 | 2017-03-08 | 南昌大学 | A kind of FRP pipe and half prefabricated half cast-in-place construction refuse regenerated concrete combination column and preparation method |
| CN106836642A (en) * | 2017-01-20 | 2017-06-13 | 天津大学 | A kind of concrete filled steel tube combined special-shaped column of anti-buckling cant timber connection |
| CN107178180A (en) * | 2017-07-20 | 2017-09-19 | 广东工业大学 | The concrete column that a kind of FRP pipes are combined with steel pipe |
| CN110528779A (en) * | 2019-08-09 | 2019-12-03 | 太原理工大学 | A kind of excellent stainless steel outer packed hollow sandwich concrete-filled circular steel tube column of crash-worthiness |
| CN112609564A (en) * | 2020-12-25 | 2021-04-06 | 福州大学 | CFRP-UHPC double-limb thin-wall high pier column |
| CN116241016A (en) * | 2022-12-08 | 2023-06-09 | 广州大学 | FRP pipe-high-strength rubber concrete-high-strength steel pipe double-pipe combined column 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: 20130327 Termination date: 20161016 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |