AU2019456680B2 - Textile-reinforced concrete-steel pipe-FRP composite pipe and manufacturing method therefor - Google Patents
Textile-reinforced concrete-steel pipe-FRP composite pipe and manufacturing method therefor Download PDFInfo
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- AU2019456680B2 AU2019456680B2 AU2019456680A AU2019456680A AU2019456680B2 AU 2019456680 B2 AU2019456680 B2 AU 2019456680B2 AU 2019456680 A AU2019456680 A AU 2019456680A AU 2019456680 A AU2019456680 A AU 2019456680A AU 2019456680 B2 AU2019456680 B2 AU 2019456680B2
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- pipe
- frp
- steel pipe
- textile
- reinforced concrete
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Abstract
A textile-reinforced concrete-steel pipe-FRP composite pipe, comprising an FRP round pipe (4), a thin-wall steel pipe (2), and textile-reinforced concrete arranged coaxially from the inside to the outside, wherein fine-grained concrete (3) is poured between the FRP round pipe (4) and the thin-wall steel pipe (2), a steel sleeve ring (5) is provided on an outer surface of a connection portion by means of pegs (6), and a seal rubber gasket is provided below the steel sleeve ring (5). The inner layer of the pipe uses a resin fiber-reinforced material, and has the advantages of corrosion resistance, fatigue resistance, and light weight; the formed pipe features a smooth inner wall, no growth of microorganisms, a large water flow amount, and a long service life, such that subsequent maintenance costs are reduced; due to the use of a steel pipe as an interlayer, the composite pipe has a strong pressure bearing capability and high rigidity; the textile-reinforced concrete of the outer layer has a further constraint effect on the internal steel pipe and FRP, thereby further improving the pressure bearing capability and pressure resistance capability of the pipe; in addition, the textile-reinforced concrete has good corrosion resistance and permeability resistance, thereby implementing a long service life of the pipe.
Description
Description
Technical field
The present invention relates to a textile-reinforced concrete-steel pipe-FRP composite pipe and a manufacturing method therefor, and belongs to the technical field of pipelines.
Background Art
As cities are developed continuously and the environmental protection requirements are increased continuously, buried water supply pipelines and water drainage and sewage pipelines are extensively applied in underground pipe networks in the cities. Traditional reinforced concrete pipelines have rough pipe walls, to which polluting liquids may adhere easily; consequently, the flow area of the pipelines will be reduced and the liquid flow resistance will be increased during long-time service. In addition, the concrete pipelines are prone to water seepage and have poor leak-tightness; moreover, the concrete pipelines involve a corrosion problem during the service time, and the corrosion belongs to chronic corrosion that is difficult to detect by the inspectors; the concrete pipelines also involve a problem of stress corrosion cracking, which is a cracking phenomenon of the pipelines caused by the simultaneous action of corrosion, tension and stress, and is extremely harmful.
Most composite pipelines are formed by using the steel pipes as base pipes, which are wrapped with a thermal insulation material or elastomeric material. Buried composite pipelines may crack or the cracks may be enlarged owing to excessive pressure under the load of vehicles during service, which affects the normal use of the pipelines and thereby affects people's daily life. In addition, this type of pipelines also involves technical problems such as corrosion problem, poor corrosion resistance and short service life, etc.
Contents of the Invention
Object of the Invention: to overcome the drawbacks in the prior art, the present invention provides a textile-reinforced concrete-steel pipe-FRP composite pipe and a manufacturing method therefor. The textile-reinforced concrete-steel pipe-FRP composite pipe has advantages including corrosion resistance, high pressure bearing capacity, and excellent sealing performance, and has a thin pipe wall, light weight, and a smooth inner wall with low resistance, and is convenient and easy to construct and install.
Technical Solution: to attain the object described above, the present invention employs the following technical solution:
A textile-reinforced concrete-steel pipe-FRP composite pipe, comprising an FRP round pipe, a thin-wall steel pipe, and textile-reinforced concrete, which are coaxially arranged from inside to outside;
wherein the FRP round pipe is formed by winding multiple strands of continuous fibers treated with a resin material, and the two ends of the FRP round pipe are respectively provided with a spigot and a socket; the thin-wall steel pipe is shorter than the FRP round pipe at one end and longer than the .I .
FRP round pipe at the other end, and fine-grain concrete is poured between the FRP round pipe and the thin-wall steel pipe; textile-reinforced concrete that has high corrosion resistance and high bearing capacity is poured outside the thin-wall steel pipe, a steel collar is provided on the outer surface of the textile-reinforced concrete via pegs at the interface, and a sealing rubber gasket is provided under the steel collar.
Furthermore, the resin material used in the forming process of the FRP round pipe comprises polyamide resin, polyvinyl resin, phenolic resin, and epoxy resin, etc.
Furthermore, the winding angle of fiber yarns in the forming process of the FRP round pipe is 80 to 90°.
Furthermore, the continuous fibers used in the forming process of the FRP round pipe comprise aramid fibers, carbon fibers, glass fibers, basalt fibers, PBO fibers, and hybrid fibers.
Furthermore, the thin-wall steel pipe is a seamless steel pipe.
Furthermore, the textile-reinforced concrete is composed of a woven fabric net and fine-grain concrete.
Furthermore, the woven fabric net comprises woven carbon fiber net, woven glass fiber net, woven PBO fiber net, woven basalt fiber net, woven aramid fiber net and woven hybrid fiber net.
Furthermore, the fine-grain concrete is composed of cement, fly ash, silica fume, quartz sand and water reducer, wherein the water to binder ratio is 0.38 to 0.40, the mass of the water reducer is 1.5~2.5% of the mass of the cement, the mass of the fly ash is 20% to 25% of the total mass of the cementing materials, the mass of the silica fume is 5% to 7.5% of the total mass of the cementing materials, the mass of the quartz sand is 1,000kg to 1,400kg (the ratio of sands grains in 0 to 0.6mm grain size to sand grains in 0.6mm to 1.2mm grain size is 2:1).
Furthermore, the steel collar is welded to the surface of the steel pipe via the pegs.
A manufacturing method of a textile-reinforced concrete-steel pipe-FRP composite pipe, comprising the following steps:
1) winding and processing a fiber reinforced composite material - fiber yarns to form a corrosion-resistant FRP round pipe as an inner layer, with a spigot and a socket arranged at two ends of the FRP round pipe respectively;
2) arranging a thin-wall steel pipe at the outer side of the FRP round pipe according to design requirements, with the central axis of the steel pipe coinciding with the central axis of the FRP round pipe, wherein the steel pipe is shorter than the FRP round pipe at one end and longer than the FRP round pipe at the other end, and the shortened length and extended length of the steel pipe at the two ends are determined according to engineering requirements;
3) pouring fine-grain concrete between the FRP round pipe and the thin-wall steel pipe;
4) arranging pegs circumferentially at an even internal on the outer surface of the thin-wall steel pipe, and welding the pegs to a steel collar;
5) pouring textile-reinforced concrete that has high corrosion resistance and high bearing capacity outside the thin-wall steel pipe, wherein the number of layers of the woven fabric net is determined according to the actual engineering requirements; • 2 •
6) arranging a sealing rubber gasket under the steel collar to provide a sealing function during pipeline assembly.
Beneficial effects: compared with the prior art, the textile-reinforced concrete-steel pipe-FRP composite pipe and the manufacturing method therefor provided by the present invention have the following advantages:
1) High corrosion resistance: since the inner layer of the pipes employs an FRP material that is resistant to acids and alkalis, the service life of the pipe is long, the subsequent maintenance and service cost is reduced, and the scope of application of the pipes is widened to include corrosive liquid transportation; moreover, the application of the textile-reinforced concrete avoids corrosion of the sandwiched steel pipe and further prolongs the service life of the pipes.
2) High pressure bearing capacity: the FRP material has high tensile strength, the FRP pipe formed by winding has high pressure bearing capacity, and the sandwiched steel pipe also has high pressure bearing capacity; besides, the outer textile-reinforced concrete has a further constraining effect on the inner steel pipe and FRP pipe; thus, pipe cracking is greatly avoided, and the risk of pipe cracking owing to inadequate pressure bearing capacity during service is decreased.
3) High leak tightness: a socket and a reserved spigot are provided at the pipe interface, and a steel collar is provided at the interface; thus, the leak tightness of the pipe is greatly improved by the multiple measures.
4) The pipe has a thin pipe wall, light weight, and a smooth inner wall with low flow resistance, and is convenient and easy to construct and install.
Description of Drawings
Fig. 1 is a schematic structural diagram of the textile-reinforced concrete-steel pipe-FRP composite pipe proposed by the present invention;
Fig. 2 is a sectional view A-A of the structure shown in Fig. 1;
Fig. 3 is a structural view of the composite pipe A and composite pipe B in Fig. 2 at the interface;
In the figures: 1 - woven fabric net; 2 - thin-wall steel pipe; 3 - fine-grain concrete; 4 - FRP round pipe; 5 - steel collar; 6 - peg.
Embodiments
Hereunder the present invention will be further detailed, with reference to the accompanying drawings.
As shown in Figs. 1-3, a textile-reinforced concrete-steel pipe-FRP composite pipe, comprising an FRP round pipe 4, a thin-wall steel pipe 2, and textile-reinforced concrete, which are coaxially arranged from inside to outside, wherein,
the FRP round pipe 4 is formed by winding multiple strands of continuous fibers treated with a resin material, and the two ends of the FRP round pipe 4 are respectively provided with a spigot and a socket; the thin-wall steel pipe 2 is shorter than the FRP round pipe 4 at one end and longer than the FRP round pipe 4 at the other end, and fine-grain concrete 3 is poured between the FRP round pipe 4 and the thin-wall steel pipe 2; a steel collar 5 is provided on the outer surface of the •3• textile-reinforced concrete via pegs 6 at the interface, and a sealing rubber gasket is provided under the steel collar 5. The resin material used in the forming process of the FRP round pipe 4 comprises polyamide resin, polyvinyl resin, phenolic resin, and epoxy resin, etc. The continuous fibers used in the forming process of the FRP round pipe 4 comprise aramid fibers, carbon fibers, glass fibers, basalt fibers, PBO fibers, and hybrid fibers, and the winding angle of fiber yams is 800 to 90°. The thin-wall steel pipe 2 is a seamless steel pipe; the steel collar 5 is welded to the surface of the steel pipe via the pegs 6. The textile-reinforced concrete is composed of a woven fabric net 1 and fine-grain concrete 3, wherein the woven fabric net 1 comprises woven carbon fiber net, woven glass fiber net, woven PBO fiber net, woven basalt fiber net, woven aramid fiber net and woven hybrid fiber net. The fine-grain concrete 3 is composed of cement, fly ash, silica fume, quartz sand and water reducer, wherein the water to binder ratio is 0.38 to 0.40, the mass of the water reducer is 1.5~2.5% of the mass of the cement, the mass of the fly ash is 20% to 25% of the total mass of the cementing materials, the mass of the silica fume is 5% to 7.5% of the total mass of the cementing materials and the mass of the quartz sand is 1,000kg to 1,400kg (the ratio of sands grains in 0 to 0.6mm grain size to sand grains in 0.6 to 1.2mm grain size is 2:1). A manufacturing method of a textile-reinforced concrete-steel pipe-FRP composite pipe, comprising the following steps: 1) winding and processing a fiber reinforced composite material - fiber yarns to form a corrosion-resistant FRP round pipe as an inner layer, with a spigot and a socket arranged at two ends of the FRP round pipe respectively; 2) arranging a thin-wall steel pipe at the outer side of the FRP round pipe according to design requirements, with the central axis of the steel pipe coinciding with the central axis of the FRP round pipe, wherein the steel pipe is shorter than the FRP round pipe at one end and longer than the FRP round pipe at the other end, and the shortened length and extended length of the steel pipe at the two ends are determined according to engineering requirements; 3) pouring fine-grain concrete between the FRP round pipe and the thin-wall steel pipe; 4) arranging pegs circumferentially at an even internal on the outer surface of the steel pipe, and welding the pegs to a steel collar; 5) pouring textile-reinforced concrete that has high corrosion resistance and high bearing capacity outside the thin-wall steel pipe, wherein the number of layers of the woven fabric net is determined according to the actual engineering requirements; 6) arranging a sealing rubber gasket under the steel collar to provide a sealing function during pipe assembly. In the present invention, the inner layer of the pipes employs a resinfiber reinforced material, which has the advantages of high corrosion resistance, high fatigue resistance, and light weight, etc.; the formed pipes have a smooth inner wall, that can inhibit the growth of microorganisms, a large water
.4.
flow amount, and a long service life, such that subsequent maintenance cost are reduced; due to the use of a steel pipe as a sandwiched layer, the novel composite pipe provided by the present invention has higher pressure bearing capacity and higher rigidity; the outer textile-reinforced concrete has a further constraining effect on the inner steel pipe and FRP pipe, thereby further increases the pressure bearing capacity and pressure resistance capability of the pipe; moreover, the textile-reinforced concrete has high corrosion resistance and permeability resistance, thus increases the service life of the pipe. In addition, since a socket and a reserved spigot are provided at the pipe interface and a steel collar is provided at the interface, the leak tightness of the pipe is greatly improved. While the present invention is described above in some preferred embodiments, it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and those improvements and modifications should be deemed as falling in the scope of protection of the present invention.
. 5.
Claims (7)
- Claims1 A textile-reinforced concrete-steel pipe-Fiber Reinforced Plastic (FRP) composite pipe, comprising an FRP round pipe (4), a thin-wall steel pipe (2), and textile-reinforced concrete, which are coaxially arranged from inside to outside, wherein,the FRP round pipe (4) is formed by winding multiple strands of continuous fibers treated with a resin material, and the two ends of the FRP round pipe (4) are respectively provided with a spigot and a socket; the thin-wall steel pipe (2) is shorter than the FRP round pipe (4) at one end and longer than the FRP round pipe (4) at the other end, and fine-grain concrete (3) is poured between the FRP round pipe (4) and the thin-wall steel pipe (2); a steel collar (5) is provided on the outer surface of the textile-reinforced concrete via pegs (6) at the interface, and a sealing rubber gasket is provided under the steel collar (5), wherein the winding angle of fiber yams in the forming process of the FRP round pipe (4) is 80 to 90°;wherein the textile-reinforced concrete is composed of a woven fabric net (1) andfine-grain concrete (3), andwherein the fine-grain concrete (3) is composed of cement, fly ash, silica fume, quartz sand and a water reducer, wherein the water to binder ratio is 0.38 to 0.40, the mass of the water reducer is 1.5~2.5% of the mass of the cement, the mass of the fly ash is 20% to 25% of the total mass of the cementing materials, the mass of the silica fume is 5% to 7.5% of the total mass of the cementing materials, and the mass of the quartz sand is 1,000kg to 1,400kg.
- 2. The textile-reinforced concrete-steel pipe-FRP composite pipe according to claim 1, wherein the resin material used in the forming process of the FRP round pipe (4) comprises polyamide resin, polyvinyl resin, phenolic resin, and epoxy resin.
- 3. The textile-reinforced concrete-steel pipe-FRP composite pipe according to claim 1, wherein the continuous fibers used in the forming process of the FRP round pipe (4) comprise aramid fibers, carbon fibers, glass fibers, basalt fibers, PBO fibers, and hybrid fibers.
- 4. The textile-reinforced concrete-steel pipe-FRP composite pipe according to claim 1, wherein the thin-wall steel pipe (2) is a seamless steel pipe.
- 5. The textile-reinforced concrete-steel pipe-FRP composite pipe according to claim 1, wherein the woven fabric net (1) comprises woven carbon fiber net, woven glass fiber net, woven PBO fiber net, woven basalt fiber net, woven aramid fiber net, and woven hybrid fiber net.
- 6. The textile-reinforced concrete-steel pipe-FRP composite pipe according to claim 1, wherein the steel collar (5) is welded to the surface of the steel pipe via the pegs (6).
- 7. A manufacturing method of the textile-reinforced concrete-steel pipe- Fiber Reinforced Plastic (FRP) composite pipe according to claim 1, comprising the following steps:1) winding and processing a fiber reinforced composite material - fiber yams to form an FRP round pipe (4) as an inner layer, with a spigot and a socket provided at two ends of the FRP round pipe (4) respectively;2) arranging a thin-wall steel pipe (2) at the outer side of the FRP round pipe (4), with the central axis of the thin-wall steel pipe (2) coinciding with the central axis of the FRP round pipe (4), wherein the thin-wall steel pipe (2) is shorter than the FRP round pipe (4) at one end and longer than the FRP round pipe (4) at the other end;3) pouring fine-grain concrete (3) between the FRP round pipe (4) and the thin-wall steel pipe (2);4) arranging pegs (6) circumferentially at an even interval on the outer surface of the thin-wall steel pipe (2), and welding a steel collar (5) at the outer side of the pegs (6);5) pouring textile-reinforced concrete at the outer side of the thin-wall steel pipe (2);6) arranging a sealing rubber gasket at the inner side of the steel collar (5).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910621527.9 | 2019-07-10 | ||
| CN201910621527.9A CN110319281B (en) | 2019-07-10 | 2019-07-10 | A fabric-reinforced concrete-steel-steel-FRP composite pipe and its manufacturing method |
| PCT/CN2019/109876 WO2021003861A1 (en) | 2019-07-10 | 2019-10-08 | Textile-reinforced concrete-steel pipe-frp composite pipe and manufacturing method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2019456680A1 AU2019456680A1 (en) | 2021-05-13 |
| AU2019456680B2 true AU2019456680B2 (en) | 2022-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| AU2019456680A Active AU2019456680B2 (en) | 2019-07-10 | 2019-10-08 | Textile-reinforced concrete-steel pipe-FRP composite pipe and manufacturing method therefor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110319281B (en) |
| AU (1) | AU2019456680B2 (en) |
| WO (1) | WO2021003861A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555523A (en) * | 2020-12-18 | 2021-03-26 | 沈阳建筑大学 | High-strength anti-corrosion infusion pipeline with adjustable anti-permeability function and manufacturing method thereof |
| CN115012586A (en) * | 2022-04-20 | 2022-09-06 | 辽宁工程技术大学 | Novel GFRP pipe-thin steel plate-concrete column |
| CN115538555A (en) * | 2022-08-16 | 2022-12-30 | 成都城投城建科技有限公司 | Perfusion type UHPC prefabricated oval drainage pipeline structure and manufacturing method |
| CN115897571A (en) * | 2022-12-16 | 2023-04-04 | 山东科技大学 | A metal-fiber reinforced resin matrix composite material and its manufacturing method |
| CN121246029B (en) * | 2025-12-04 | 2026-03-03 | 河北省多基复合材料产业技术研究院有限公司 | A crack-resistant glass fiber reinforced concrete composite pipe and its manufacturing process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588684A (en) * | 2011-01-11 | 2012-07-18 | 深圳市吉凌复合材料科技股份有限公司 | Novel fiber reinforced plastic concrete composite pipe |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3671852B2 (en) * | 2001-03-27 | 2005-07-13 | 株式会社豊田自動織機 | Filament winding equipment |
| CN201436433U (en) * | 2009-03-17 | 2010-04-07 | 武汉理工大学 | Composite pipe structure of FRP and prestressed steel cylinder concrete |
| KR101102299B1 (en) * | 2009-08-31 | 2012-01-03 | (주) 삼정디씨피 | Fiberglass cladding |
| CN103707523B (en) * | 2013-12-17 | 2016-01-20 | 哈尔滨玻璃钢研究院 | A kind of method using knitting skill to strengthen FRP drawing and extruding section bar transverse strength |
| CN105221859B (en) * | 2015-10-22 | 2020-01-10 | 盘锦建硕管业有限公司 | Fiber-reinforced thermal-insulation thermoplastic composite pipe and preparation method thereof |
| CN205716069U (en) * | 2016-04-08 | 2016-11-23 | 司五庆 | A kind of FRP compound pipeline complex pipeline |
| CN208041355U (en) * | 2018-04-17 | 2018-11-02 | 吉林电力管道工程有限公司 | A kind of modified Prestressed concrete cylinder pipe |
-
2019
- 2019-07-10 CN CN201910621527.9A patent/CN110319281B/en active Active
- 2019-10-08 AU AU2019456680A patent/AU2019456680B2/en active Active
- 2019-10-08 WO PCT/CN2019/109876 patent/WO2021003861A1/en not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588684A (en) * | 2011-01-11 | 2012-07-18 | 深圳市吉凌复合材料科技股份有限公司 | Novel fiber reinforced plastic concrete composite pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110319281A (en) | 2019-10-11 |
| WO2021003861A1 (en) | 2021-01-14 |
| CN110319281B (en) | 2021-01-08 |
| AU2019456680A1 (en) | 2021-05-13 |
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