CN206635633U - A kind of outsourcing FRP steel pipe arch structures - Google Patents
A kind of outsourcing FRP steel pipe arch structures Download PDFInfo
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- CN206635633U CN206635633U CN201720321160.5U CN201720321160U CN206635633U CN 206635633 U CN206635633 U CN 206635633U CN 201720321160 U CN201720321160 U CN 201720321160U CN 206635633 U CN206635633 U CN 206635633U
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Abstract
A kind of outsourcing FRP steel pipe arch structures, the utility model is related to a kind of arch structure, to solve the problems, such as that conventional steel arch structure is easily surrendered, makes that difficult, steel using amount is big, welding job is heavy, perishable and service life.The utility model includes steel flanged beam arch rib and two bases, and two bases are symmetricly set on the both ends of steel flanged beam arch rib, and the steel flanged beam arch rib includes steel pipe and FRP layers, and FRP layers are coated on the outer layer of steel pipe, and FRP layers with steel pipe by resin-bonded into multiple tube.The utility model is applied to science of bridge building, Metro Tunnel and large-span structure engineering under corrosive environment etc..
Description
Technical field
It the utility model is related to a kind of arch structure, and in particular to a kind of outsourcing FRP steel pipe arch structures.
Background technology
Steel pipe arch structure, especially Steel-pipe Arch Truss structure, because its have reasonable stress, from heavy and light, intensity is high, construction just
The advantages that prompt, handsome in appearance, obtains extensively should in the large-span structure such as science of bridge building and airport, gymnasium, industrial premises
With.But in steel pipe arch structure, local buckling easily occurs for thin-wall steel tube, causes the decline of structural bearing capacity.Therefore in order to
Improve structural bearing capacity, delay steel pipe that flexing, the steel pipe that arch rib generally use is relatively large in diameter, wall thickness is thicker, and in pipe occurs
Multiple tracks ribbed stiffener is set, but at the same time can also produce the problems such as steel pipe manufacturing is difficult, steel using amount is big, welding job is heavy.
Conventional steel arch structure is also faced with the problems such as perishable, poor fatigue properties simultaneously.Because steel pipe is exposed to air
In, chemistry, the electrochemical action of the moisture that is vulnerable in air and other pollutants and cause corrosion, influence steel pipe arch structure
Security and service life.In order to meet the requirement of tubular arch aseptic technic, anticorrosive coating, hot-dip are typically used in Practical Project
Steel pipe is protected Deng measure, but it is incident be great number anti-corrosion and maintenance cost, therefore the susceptibility-to-corrosion of steel
So that this preferably arch component is seldom applied in the environment of high corrosion.
Utility model content
The utility model easily surrenders to solve conventional steel arch structure, makes difficult, steel using amount greatly, welding job
The problem of heavy, perishable and service life is short, and propose a kind of outsourcing FRP steel pipe arch structures.
A kind of outsourcing FRP steel pipe arch structures of the present utility model, it, which is formed, includes steel flanged beam arch rib and two bases, two
Basis is symmetricly set on the both ends of steel flanged beam arch rib, and the steel flanged beam arch rib includes steel pipe and FRP layers, and FRP layers are coated on steel pipe
Outer layer, and FRP layers and steel pipe by resin-bonded into multiple tube.
The utility model has the advantages that compared with prior art：
First, due to FRP material (fibre reinforced composites) have tensile strength height, corrosion resistance and good, from heavy and light, resist
FRP layers are pasted on outside steel pipe by the features such as fatigue behaviour is strong, easy for construction, the utility model so that outsourcing FRP tubular archs have
The effect of additional constraint, so as to delay or avoid steel pipe from surrendering, the stability bearing capacity of structure is improved, steel pipe is added and bends
Plastic deformation ability after song.
2nd, FRP material combination steel pipe use can substitute a part of steel pipe, not only alleviate the overall weight of structure, subtract
The wall thickness of thin large diameter steel pipe, reduce the steel using amount and cost of arch rib, moreover it is possible to by the high epistasis phase of the non-linear and FRP material of steel
With reference to improving the stress performance of tubular arch.
3rd, FRP layers chemical property is stable, is not easy burn into good endurance, the problem of can solve the problem that ordinary steel pipeline overhead lifting corrosion.
FRP stress relaxations are small simultaneously, anti-fatigue performance is strong so that outsourcing FRP tubular archs have good endurance quality.
4th, steel pipe can be used as Wound Dies in the taping process of FRP fibers, easy for construction, can save mould
Manufacturing cost and knockout course, production cost is reduced, shorten the construction period.
Brief description of the drawings
Fig. 1 is the schematic diagram of outsourcing FRP steel pipe arch structures of the present utility model；
Fig. 2 is that the cross sectional shape of steel flanged beam arch rib 2 is circular configuration schematic diagram；
Fig. 3 is that the cross sectional shape of steel flanged beam arch rib 2 is square structure schematic diagram；
Fig. 4 is that the cross sectional shape of steel flanged beam arch rib 2 is rectangular configuration schematic diagram；
Fig. 5 is the structural representation that arch rib of the present utility model is purlin formula arch；
Fig. 6 be steel flanged beam arch rib 2 quantity be three when, purlin formula arch cross sectional shape be triangular structure schematic diagram；
Fig. 7 be steel flanged beam arch rib 2 quantity be three when, purlin formula arch cross sectional shape be inverted triangular structure schematic diagram；
Fig. 8 be steel flanged beam arch rib 2 quantity be four when, purlin formula arch cross sectional shape be rectangular configuration schematic diagram；
Fig. 9 be steel flanged beam arch rib 2 quantity be four when, purlin formula arch cross sectional shape be inverted trapezoidal structure schematic diagram.
Embodiment
Embodiment one：Illustrate present embodiment with reference to Fig. 1, present embodiment includes steel flanged beam arch rib 2 and two
Basis 1, two bases 1 are symmetricly set on the both ends of steel flanged beam arch rib 2, and the both ends of steel flanged beam arch rib 2 respectively with both sides basis 1
Affixed, steel flanged beam arch rib 2 includes steel pipe 4 and FRP layers 3, and FRP layers 3 are coated on the outer layer of steel pipe 4, and FRP layers 3 pass through with steel pipe 4
It is resin-bonded into multiple tube.Steel pipe 4 is welded into tubular arch by straight steel pipe simmering and bending or steel plate, and steel flanged beam arch rib 2 is using steel pipe as winding
FRP layers 3 continuously along the ring of steel pipe 4 and are axially located at steel tube surface by mould, be made one or more layers FRP pipe, each layer fiber it
Between also using resin-bonded.In order to ensure the bond effect between FRP layers 3 and steel pipe 4, strengthen sticking strength and durability,
Before pasting FRP fibers, steel pipe 4 should be surface-treated or blasting treatment, remove the iron rust, coating and oil of outer surface of steel tube
Paint, and cleaned.FRP fibers should be pasted in time after the completion of surface treatment, otherwise can reduce adhesion strength.It can lead to simultaneously
Cross using equipment such as electric blanket or heaters to improve the maintenance speed of binding agent.FRP is fibre reinforced plastics.Steel flanged beam arch rib
2 line form is that parabola shaped, circular arc or stretched wire are linear.
Steel flanged beam arch rib 2 is assembled by rib-lifting section, before rib-lifting section processing, should according to Theoretical Design arch axis coordinate and
Arch rise left in advance value carries out setting-out, determines rib-lifting section number and segmental length.Rib-lifting section is welded into by straight steel pipe simmering and bending or steel plate
Pipe, carries out assembly welding, all welding qualities should meet code requirement after physical dimension passed examination.
The FRP fibers of outer layer can be divided into ring fiber and axial direction fibre according to the stickup direction of fibre bundle.When outsourcing FRP steel
When pipeline overhead lifting starts to bear external load effect, fiber is in hoop tension state, with the increase of load, close to ultimate bearing capacity
When, ring fiber regional area initially enters pressured state because roach gives birth to bending deformation, but before roach gives birth to unstability, it is overall
Still based on hoop tension, the influence of the stress check calculation of ring fiber to bearing capacity can be neglected.Therefore circumferentially paste
Fiber mainly produces hoop constraint to steel pipe by hoop tension, and then limits the development of steel pipe bending deformation, improves component
Stability bearing capacity and ductility.And axial direction fibre is completely in pressured state before test specimen reaches stability bearing capacity, due to loading
Starting stage deformation is smaller, and axial direction fibre forms the tubular structure for depending on steel tube surface, and this allows it to undertake partial pressure.
With the generation of arch structure unstability, part axial direction fibre is gradually converted to tension state, Jin Erqi due to the bending deformation of steel pipe
To the effect of limitation test piece deformation development, it is possible to increase the initial post-buckling behavior of arch.
FRP layers 3 in present embodiment are one or more layers fibrous material, and fibrous material is moulded for glass fiber reinforcement
One or more in material, carbon fibre reinforced plastic, Basalt fiber reinforced plastic and aromatic polyamide fiber reinforced plastics, which mix, to be formed.
Described fibrous material is fiberglass reinforced plastics, carbon fibre reinforced plastic, Basalt fiber reinforced plastic and aramid fiber
It is any ratio when several specific admixtures in reinforced plastics form, between each composition.
Resin in present embodiment is epoxy resin, unsaturated polyester resin, vinylite or phenolic resin.
Embodiment two：Illustrate present embodiment, the steel flanged beam arch rib 2 of present embodiment with reference to Fig. 2, Fig. 3 and Fig. 4
Cross sectional shape be circular, square or rectangle.Other compositions and annexation are identical with embodiment one.
Embodiment three：Illustrate present embodiment, present embodiment and specific embodiment party with reference to Fig. 5, Fig. 6 and Fig. 7
It, which also increases, unlike formula four several web member supports 5, and the quantity of steel flanged beam arch rib 2 is three, in terms of section：Three real abdomens
Formula arch rib 2 is arranged by triangle or del, and several web members support 5, and web member are provided between every adjacent steel flanged beam arch rib 2
The both ends of support 5 are affixed with both sides steel flanged beam arch rib 2 respectively.Present embodiment is encircleed for purlin formula.It is other composition and annexation with
Embodiment two is identical.
Embodiment four：Illustrate present embodiment, present embodiment and specific embodiment party with reference to Fig. 5, Fig. 6 and Fig. 7
It, which also increases, unlike formula four several web member supports 5, and the quantity of steel flanged beam arch rib 2 is four, in terms of section：Four real abdomens
Formula arch rib 2 is arranged by rectangle or inverted trapezoidal, several web members support 5 is provided between every adjacent steel flanged beam arch rib 2, and web member supports
5 both ends are affixed with both sides steel flanged beam arch rib 2 respectively.Present embodiment is encircleed for purlin formula.Other compositions and annexation with it is specific
Embodiment two is identical.
Embodiment five：Illustrate present embodiment with reference to Fig. 5~Fig. 9, present embodiment web member support 5 is steel pipe.
Other compositions and annexation are identical with embodiment three or four.
Embodiment six：Illustrate present embodiment with reference to Fig. 5~Fig. 9, the web member support 5 of present embodiment is steel pipe
The multiple tube that 4 and FRP layers 3 are combined.Other compositions and annexation are identical with embodiment five.
Claims (6)
- A kind of 1. outsourcing FRP steel pipe arch structures, it is characterised in that：The outsourcing FRP steel pipes arch structure includes steel flanged beam arch rib (2) With two bases (1), two bases (1) are symmetricly set on the both ends of steel flanged beam arch rib (2), and the steel flanged beam arch rib (2) includes Steel pipe (4) and FRP layers (3), FRP layers (3) are coated on the outer layer of steel pipe (4), and FRP layers (3) with steel pipe (4) by resin-bonded Into multiple tube.
- A kind of 2. outsourcing FRP steel pipe arch structures according to claim 1, it is characterised in that：The steel flanged beam arch rib (2) Cross sectional shape is circular, square or rectangle.
- A kind of 3. outsourcing FRP steel pipe arch structures according to claim 2, it is characterised in that：The outsourcing FRP tubular arch knots Structure also includes several web members support (5), and the quantity of steel flanged beam arch rib (2) is three, in terms of section：Three steel flanged beam arch ribs (2) Arranged by triangle or del, several web members support (5) is provided between every adjacent steel flanged beam arch rib (2).
- A kind of 4. outsourcing FRP steel pipe arch structures according to claim 2, it is characterised in that：The outsourcing FRP tubular arch knots Structure also includes several web members support (5), and the quantity of steel flanged beam arch rib (2) is four, in terms of section：Four steel flanged beam arch ribs (2) Arranged by rectangle or inverted trapezoidal, several web members support (5) is provided between every adjacent steel flanged beam arch rib (2).
- A kind of 5. outsourcing FRP steel pipe arch structures according to claim 3 or 4, it is characterised in that：The web member supports (5) For steel pipe.
- A kind of 6. outsourcing FRP steel pipe arch structures according to claim 5, it is characterised in that：The web member support (5) is steel The multiple tube that pipe (4) and FRP layers (3) are combined.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720321160.5U CN206635633U (en) | 2017-03-29 | 2017-03-29 | A kind of outsourcing FRP steel pipe arch structures |
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| CN201720321160.5U CN206635633U (en) | 2017-03-29 | 2017-03-29 | A kind of outsourcing FRP steel pipe arch structures |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835935A (en) * | 2017-03-29 | 2017-06-13 | 哈尔滨工业大学 | A kind of outsourcing FRP steel pipe arch structures |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835935A (en) * | 2017-03-29 | 2017-06-13 | 哈尔滨工业大学 | A kind of outsourcing FRP steel pipe arch structures |
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