CN109989526A - FRP pipe profile sea sand fast hardening concrete circular group zygostyle - Google Patents
FRP pipe profile sea sand fast hardening concrete circular group zygostyle Download PDFInfo
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- CN109989526A CN109989526A CN201910302333.2A CN201910302333A CN109989526A CN 109989526 A CN109989526 A CN 109989526A CN 201910302333 A CN201910302333 A CN 201910302333A CN 109989526 A CN109989526 A CN 109989526A
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- China
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- frp
- sea sand
- concrete
- section bar
- fast hardening
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Classifications
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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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
- E04C5/073—Discrete reinforcing elements, e.g. fibres
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Artificial Fish Reefs (AREA)
Abstract
It the present invention relates to a kind of FRP pipe profile sea sand fast hardening concrete circular group zygostyle, is managed by the FRP of outer layer, internal FRP drawing and extruding section bar and sea sand fast hardening concrete therebetween form.FRP pipe provides hoop constraint for concrete, so that concrete is in three dimension stress state, improves the bearing capacity and ductility of column；FRP drawing and extruding section bar provides axis pressure, bending drag, reduces the contraction distortion of concrete, prevents the buckling of coupled column, improves the bending stiffness and overall stability of coupled column.Furthermore, due to the good corrosion resistance of FRP and durability, the concrete as made of the marine materials such as seawater, sea sand or coral sand, corallite and cement, accelerator mix can be used in the coupled column, greatly improve the utilization rate of marine resources, especially for ocean islands and reefs engineering, the coupled column be able to satisfy gather materials on the spot, the requirement that rapid construction, durability are good.
Description
Technical field
The present invention relates to technical field of buildings, in particular to a kind of FRP pipe profile sea sand fast hardening concrete circular group zygostyles.
Background technique
China has a vast territory, there is very long coastline, in wide ocean, there is marine resources abundant.Such as exist
Civil construction industry, available seawater, sea sand and the coral reef scale of construction are huge, and cost of transporting by sea is lower than land transportation cost.But
It can lead to steel bar corrosion due to containing a large amount of chloride ion in seawater, seriously affect the structural bearing capacity and durability of concrete.
Although engineering circles propose the anti-corrosions measures such as sea sand desalting method, addition corrosion inhibitor method, reinforcing bar processing, due to technology and cost
The use of problem, these methods is still restricted.Especially for the ocean islands and reefs engineering for lacking goods and materials, machinery, excessively complicated
Treatment process and expensive cost are simultaneously unrealistic.
In order to fundamentally solve steel bars corrosion problem, material replacement is an effective method.Fiber-reinforced composite material
Expect that (FRP) is used as a kind of high-performance novel structural material, there is high-strength light, corrosion resistance and very strong designability, by it
It is fabricated to the diversified forms such as cloth, plate, muscle, grid, pipe and Combined concrete, has both adapted to severe marine environment, moreover it is possible on the spot
Materials, using untreated seawater, sea sand, corallite, substantially reduce the freight volume of raw material, are be suitable for islands and reefs exploitation one
Kind mode.
FRP pipe has preferable binding character to concrete, so that concrete is in triaxial stress state, can greatly improve carrying energy
Power, ductility and anti-seismic performance.Normal concrete is mostly used in existing research achievement in FRP pipe, and to full coral seawater coagulation
Soil studies have shown that tensile splitting strength, the flexural strength of full coral seawater coagulation soil are all larger than identical cubic compressive strength
The normal concrete of grade and common light aggregate concrete, and axial compressive strength is then between normal concrete and common light-weight aggregate
Between concrete；In addition, the static modulus of elasticity of full coral seawater coagulation soil is slightly below normal concrete, but it is higher than common light-weight aggregate
Concrete；The Poisson's ratio of full coral concrete is 0.25~0.28.And for marine sand concrete, existing research shows by simple
For the marine sand concrete of physically screening processing relative to river sand concrete, mechanical property does not have apparent difference, and sea sand with
The concrete additives such as flyash, slag have certain compatibility.And for ocean islands and reefs engineering, construction requires lightweight, fast
It is fast and corrosion-resistant, and the usual building height of islands and reefs engineering is little, bearing capacity is not required for very high-strength.In consideration of it, completely on the spot
The corallite of materials, sea sand (or coral sand) can be used as the coarse-fine aggregate in concrete, marine sand concrete made of thus pouring
Under the constraint of FRP pipe, requirement for bearing capacity can be reached.In addition, a certain amount of accelerator is added when preparing marine sand concrete,
The condensation firm time that marine sand concrete can be greatly shortened meets marine environment speed of application requirement.
It is embedded in FRP profile in FRP pipe, is remarkably improved the resistance to compression, bending resistance and stability of component, in current research
FRP profile mostly uses cross, I-shaped and H-shaped, and profile is also needed before casting concrete there is no being connected with FRP pipe
The positioning for carrying out profile, when FRP pipe is connected with profile, section is divided into several parts, can reduce the early-age shrinkage of concrete,
Keep binding effect more preferable.
Summary of the invention
The purpose of the present invention is designing a kind of FRP pipe profile sea sand fast hardening concrete circular group zygostyle, to solve ocean island
In reef engineering the problem of materials inconvenience, constructional difficulties, durability difference and Lack of support.
To achieve the above object, FRP pipe profile sea sand fast hardening concrete circular group zygostyle provided by the invention, feature exist
In: it is managed by the FRP of outer layer, internal FRP drawing and extruding section bar and sea sand fast hardening concrete therebetween form；The FRP pipe is circle
FRP winding pipe；The longitudinal fiber for accounting for outer layer FRP tube outer surface product 20%-30% is disposed in the FRP pipe；The FRP pultrusion
Profile uses cross drawing and extruding section bar, and the cross drawing and extruding section bar is along FRP pipe cross sectional arrangement and four of cross drawing and extruding section bar
Endpoint is connect with FRP inside pipe wall；The FRP pipe using prefabrication and is bolted together with FRP drawing and extruding section bar, collectively forms sea
The formwork for placing of sand concrete；The sea sand fast hardening concrete is filled in the gap in formwork for placing.
Preferably, the FRP pipe and FRP drawing and extruding section bar are that single GFRP, CFRP, AFRP or assorted fibre are compound
It is any in material, and fiber volume fraction is not less than 50%.
Further, the sea sand fast hardening concrete is mixed by seawater, sea sand or coral sand, corallite, cement and accelerator
It closes, each component mass ratio is seawater: sea sand: corallite: sulphate aluminium cement: accelerator=235:685:
1680:550:14；Or are as follows: seawater: coral sand: corallite: sulphate aluminium cement: accelerator=235:685:1680:550:
14。
It advantages of the present invention and has the beneficial effect that:
(1) coupled column is available locally, and makes full use of the marine resources such as sea sand.In addition to cement in core marine sand concrete
Outside accelerator, seawater, sea sand (or coral sand) and corallite are available locally, greatly reduction transportation cost.
(2) construction is quick.FRP pipe and FRP profile are prefabrication assembling, light high-strength, are readily transported；And the two is total
With concrete-pouring template is constituted, along with the use of accelerator, speed of application will be greatly improved.
(3) coupled column has preferable durability and bearing capacity.Due to the good durability of FRP, and in the coupled column
Without using reinforcing bar and steel pipe, so that coupled column has preferable durability；In addition, FRP pipe and FRP profile can provide concrete constraint
It acts on and as resistance to side pressure template, enough section rigidities is provided, the bearing capacity and stability of structure are greatly promoted.
Detailed description of the invention
Fig. 1 is cross section structure schematic diagram of the present invention；
In figure: round FRP winding pipe 1, FRP drawing and extruding section bar 2, marine sand concrete 3.
Specific embodiment
The present invention is done below in conjunction with attached drawing and is further described in detail:
FRP pipe profile sea sand fast hardening concrete circular group zygostyle as shown in the figure, it is characterised in that: managed by the FRP of outer layer
1, internal FRP drawing and extruding section bar 2 and sea sand fast hardening concrete 3 therebetween form；FRP pipe 1 is circle FRP winding pipe；FRP pipe 1
In be disposed with the longitudinal fiber for accounting for 1 external surface area 20%-30% of outer layer FRP pipe；FRP drawing and extruding section bar 2 uses cross pultruded
Material, cross drawing and extruding section bar are connect along four endpoints of 1 cross sectional arrangement of FRP pipe and cross drawing and extruding section bar with 1 inner wall of FRP pipe；FRP
Pipe 1 and FRP drawing and extruding section bar 2 is using prefabrication and is bolted together, and collectively forms the formwork for placing of marine sand concrete 3；Sea sand
Fast hardening concrete 3 is filled in the gap in formwork for placing.
FRP pipe 1 and FRP drawing and extruding section bar 2 are any in single GFRP, CFRP, AFRP or fiber hybrid composite, and
Fiber volume fraction is not less than 50%.Sea sand fast hardening concrete 3 is by seawater, sea sand or coral sand, corallite, cement and accelerator
Mix forms, and each component mass ratio is seawater: sea sand: corallite: sulphate aluminium cement: accelerator=235:685:1680:
550:14；Or are as follows: seawater: coral sand: corallite: sulphate aluminium cement: accelerator=235:685:1680:550:14.
The preparation method of FRP pipe profile sea sand fast hardening concrete circular group zygostyle of the present invention, mainly comprises the steps that
1) coral reef is crushed, processed, filter out corallite, coral sand with certain granules gradation；
2) light materials such as the shell in sea sand are removed with the roller screen that sieve pore is 10mm；
3) corallite, sea sand (or coral sand), cement, seawater and accelerator are placed on FRP pipe and FRP profile through mix
Between, sea sand fast hardening concrete is formed through maintenance.
FRP pipe profile sea sand fast hardening concrete circular group zygostyle obtained is 6mm in outer layer CFRP thickness of pipe wall, and internal diameter is
220mm, a height of 800mm, internal CFRP profile thickness pour sea sand fast hardening concrete in the template for 10mm composition.First by coral
Coral stone is crushed, and the corallite of partial size 20-40mm is filtered out, and sieve pore is then used to remove the shellfish in sea sand for the roller screen of 10mm
The light materials such as shell class are equipped with seawater, cement, accelerator and carry out mix, and wherein ratio of mud control is between 0.4-0.5, accelerator
Volume is 3% -5%.In casting process, Yao Jinhang vibrates closely knit to guarantee.The sea sand rapid hardening coagulation prepared by the method
The native presetting period is 3-5 minutes, and final setting time is 8-10 minutes, is able to satisfy the requirement of rapid construction under marine environment.
Claims (3)
1. a kind of FRP pipe profile sea sand fast hardening concrete circular group zygostyle, it is characterised in that: (1) is managed by the FRP of outer layer, it is internal
FRP drawing and extruding section bar (2) and therebetween sea sand fast hardening concrete (3) composition；The FRP pipe (1) is circle FRP winding pipe；Institute
State the longitudinal fiber for being disposed in FRP pipe (1) and accounting for outer layer FRP pipe (1) external surface area 20%-30%；The FRP drawing and extruding section bar
(2) cross drawing and extruding section bar is used, the cross drawing and extruding section bar manages the four of (1) cross sectional arrangement and cross drawing and extruding section bar along FRP
A endpoint is connect with FRP pipe (1) inner wall；The FRP pipe (1) and FRP drawing and extruding section bar (2) is using prefabrication and is assembled in one
It rises, collectively forms the formwork for placing of marine sand concrete (3)；The sea sand fast hardening concrete (3) is filled in the sky in formwork for placing
In gap.
2. FRP pipe profile sea sand fast hardening concrete circular group zygostyle according to claim 1, it is characterised in that: the FRP
(1) and FRP drawing and extruding section bar (2) are managed to be any in single GFRP, CFRP, AFRP or fiber hybrid composite, and corpus fibrosum
Product content is not less than 50%.
3. FRP pipe profile sea sand fast hardening concrete circular group zygostyle according to claim 1 or 2, it is characterised in that: described
Sea sand fast hardening concrete (3) is formed by seawater, sea sand or coral sand, corallite, cement and accelerator mix, each group sub-prime
Amount ratio is seawater: sea sand: corallite: sulphate aluminium cement: accelerator=235:685:1680:550:14；Or are as follows: sea
Water: coral sand: corallite: sulphate aluminium cement: accelerator=235:685:1680:550:14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302333.2A CN109989526A (en) | 2019-04-16 | 2019-04-16 | FRP pipe profile sea sand fast hardening concrete circular group zygostyle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910302333.2A CN109989526A (en) | 2019-04-16 | 2019-04-16 | FRP pipe profile sea sand fast hardening concrete circular group zygostyle |
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| CN109989526A true CN109989526A (en) | 2019-07-09 |
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| CN201910302333.2A Pending CN109989526A (en) | 2019-04-16 | 2019-04-16 | FRP pipe profile sea sand fast hardening concrete circular group zygostyle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900748A (en) * | 2021-01-25 | 2021-06-04 | 江南大学 | Prefabricated assembly type square steel tube honeycomb steel rib concrete combined column and manufacturing method thereof |
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| US5599599A (en) * | 1995-07-06 | 1997-02-04 | University Of Central Florida | Fiber reinforced plastic ("FRP")-concrete composite structural members |
| CN101177966A (en) * | 2007-12-06 | 2008-05-14 | 合肥工业大学 | Hollow double-layer FRP pipe concrete combination structure |
| CN201598776U (en) * | 2010-01-06 | 2010-10-06 | 哈尔滨工业大学深圳研究生院 | FRP pipe sea sand concrete column |
| CN106149872A (en) * | 2016-07-05 | 2016-11-23 | 中国京冶工程技术有限公司 | A kind of advanced composite material (ACM) and coral concrete structural system and construction method thereof |
| CN205857147U (en) * | 2016-07-05 | 2017-01-04 | 中国京冶工程技术有限公司 | A kind of FRP composite and coral concrete foundation structure system |
| CN106836649A (en) * | 2017-03-30 | 2017-06-13 | 韦灼彬 | Coral concrete combining structure post is filled out in fiber cloth outside steel pipe |
| CN107503470A (en) * | 2017-05-26 | 2017-12-22 | 广东工业大学 | A kind of pre-stress FRP sleeve FRP tendons sea sand seawater expansive concrete coupled column |
-
2019
- 2019-04-16 CN CN201910302333.2A patent/CN109989526A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5599599A (en) * | 1995-07-06 | 1997-02-04 | University Of Central Florida | Fiber reinforced plastic ("FRP")-concrete composite structural members |
| CN101177966A (en) * | 2007-12-06 | 2008-05-14 | 合肥工业大学 | Hollow double-layer FRP pipe concrete combination structure |
| CN201598776U (en) * | 2010-01-06 | 2010-10-06 | 哈尔滨工业大学深圳研究生院 | FRP pipe sea sand concrete column |
| CN106149872A (en) * | 2016-07-05 | 2016-11-23 | 中国京冶工程技术有限公司 | A kind of advanced composite material (ACM) and coral concrete structural system and construction method thereof |
| CN205857147U (en) * | 2016-07-05 | 2017-01-04 | 中国京冶工程技术有限公司 | A kind of FRP composite and coral concrete foundation structure system |
| CN106836649A (en) * | 2017-03-30 | 2017-06-13 | 韦灼彬 | Coral concrete combining structure post is filled out in fiber cloth outside steel pipe |
| CN107503470A (en) * | 2017-05-26 | 2017-12-22 | 广东工业大学 | A kind of pre-stress FRP sleeve FRP tendons sea sand seawater expansive concrete coupled column |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900748A (en) * | 2021-01-25 | 2021-06-04 | 江南大学 | Prefabricated assembly type square steel tube honeycomb steel rib concrete combined column and manufacturing method thereof |
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Application publication date: 20190709 |