CN108331257A - A kind of FRP pipe concrete coupled columns and preparation method thereof with reinforcing rib - Google Patents
A kind of FRP pipe concrete coupled columns and preparation method thereof with reinforcing rib Download PDFInfo
- Publication number
- CN108331257A CN108331257A CN201810051506.3A CN201810051506A CN108331257A CN 108331257 A CN108331257 A CN 108331257A CN 201810051506 A CN201810051506 A CN 201810051506A CN 108331257 A CN108331257 A CN 108331257A
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- China
- Prior art keywords
- frp
- reinforcing rib
- concrete
- cloth
- coupled columns
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
Abstract
The invention discloses a kind of FRP pipe concrete coupled columns with reinforcing rib, including FRP tube bodies, and the concrete core in filling FRP tube bodies, further include through concrete core, both ends be pierced by the tube wall of FRP tube bodies respectively after wing expansion be anchored in the reinforcing ribs of FRP tube walls.The invention also discloses the preparation methods of the concrete combination column, and using the concrete column of the pipe.The present invention improves tube wall stability, lateral projection bending stiffness and the effect of restraint of FRP pipes by reinforcing rib, concrete column can be formed directly into pipe by casting concrete, concrete core lateral expansion under xial feed effect, it is in three dimension stress stress state by FRP pipe lateral spacings, not only axial compressive strength can be improved, but also the brittleness of concrete can be improved；And difficulty of construction can be greatly reduced, improve speed of application, moreover it is possible to building waste be greatly decreased, keep construction site cleaner and tidier, reduce building cost.
Description
Technical field
The present invention relates to architectural engineering, science of bridge building and hydraulic engineering fields, and in particular to a kind of FRP with reinforcing rib
Pipe concrete coupled column and preparation method thereof.
Background technology
Fibre reinforced composites（Referred to as：FRP）With the excellent spy such as high-strength light, antifatigue, corrosion-resistant, endurance
Property, the application in concrete structure is furtherd investigate and is paid close attention to.
Since soft FRP cloth can not form skeleton, it is currently used primarily in armored concrete（Referred to as：RC）Structure
It repairs, reinforce and enhancing, have quick construction convenient, rapidly and efficiently, unobvious change structure size, and it is excellent that maintenance cost is low etc.
Point can not only significantly increase the bearing capacity of structure, can also preferably improve concrete structure member non-deformability and
Fatigue performance；Especially FRP can also improve the ductility and energy of reinforced column to the effect of contraction of concrete core
Absorbability, when bearing seismic loading, the rigidity of pillar will not significantly decrease.
Inventor discloses concrete in the Chinese utility model patent that Authorization Notice No. is 202730951 U and exempts to tear open
Except composite concrete placement template, including polyvinyl chloride（Referred to as：PVC）Internal mold layer and winding or at least one layer pasted in its outer surface are fine
Dimension enhancing composite layer；By the molding internal model for pouring internal model and providing winding for FRP or pasting of PVC materials, FRP is again
The internal model that pours of PVC materials provides protective layer, avoids PVC directly exposures and causes weathering and buckling deformation etc..
Invention content
The invention discloses a kind of FRP pipe concrete coupled columns and preparation method thereof with reinforcing rib, are made of FRP cloth
FRP is managed, it is no longer necessary to is molded internal model, FRP pipes while the formwork for placing as core concrete, overturned traditional concrete and poured
Building technology.
The invention is realized by the following technical scheme：
A kind of concrete core in FRP pipe concrete coupled columns with reinforcing rib, including FRP tube bodies, and filling FRP tube bodies
The heart, further include through concrete core, both ends be pierced by the tube wall of FRP tube bodies respectively after wing expansion be anchored in FRP tube walls
Reinforcing rib.
The further scheme of the present invention is that the FRP tube walls are also wrapped on FRP protective layers.
The further scheme of the present invention is the positioning that the reinforcing rib is covered by FRP, and is unfolded from FRP set both ends wings
Edge strip forms, and the positioning edge strip is adhered to the outer wall of FRP tube bodies.
The further scheme of the present invention is to be provided with core bar in the FRP sets.
The further scheme of the present invention is that the FRP sets are entwined by FRP cloth, and the positioning edge strip is from FRP sets two
Hold the FRP cloth item of wing expansion.
A kind of preparation method of the FRP pipe concrete coupled columns with reinforcing rib, includes the following steps：
1）The FRP cloth for being impregnated with resin glue is wound on mold, FRP tube bodies are made；
2）FRP sets are made with FRP cloth winding, FRP sets both ends are cut into several FRP cloth items along its length；In FRP tube bodies two
Side perforating, by FRP cover both ends FRP cloth item distinguish punched out, in wing expansion be anchored in FRP tube walls, become with plus
The FRP of strengthening tendons is managed；
3）To the inner cavity casting concrete of the FRP pipes of reinforcing rib, the FRP pipe concrete coupled columns with reinforcing rib are obtained.
The further scheme of the present invention is step 2）It is that the dipping part for the FRP cloth that middle part is impregnated with resin glue is wrapped in core
On bar, after dipping part is solidified into FRP sets, retain or take out core bar, FRP is covered to the non-dipping part of the FRP cloth at both ends along long
Degree direction is cut into several FRP cloth items.
The further scheme of the present invention is to further include in the FRP pipe outer walls cladding FRP protective layers with reinforcing rib.
The further scheme of the present invention is step 1）Has plastic film in die surface.
The advantages of the present invention over the prior art are that：
One, tube wall stability, lateral projection bending stiffness and the effect of restraint that FRP pipes are improved by reinforcing rib, can be direct
Into pipe, casting concrete forms concrete column, concrete core lateral expansion under xial feed effect, at FRP pipe lateral spacings
In three dimension stress stress state, axial compressive strength can be not only improved, but also the brittleness of concrete can be improved；And it can be substantially
Difficulty of construction is reduced, improves speed of application, moreover it is possible to building waste be greatly decreased, keep construction site cleaner and tidier, reduction is built into
This；
Two, by increasing the columns of reinforcing rib, the width of FRP pipes can be made to be extended, section ruler is made after casting concrete
The coupled column or diaphragm wall of very little bigger greatly improve speed of application, and the intensity of this coupled column has better design,
Relevant parameter is more easily calculated according to demand, keeps construction materials more accurate, reduces building cost, expands application range.
Description of the drawings
Fig. 1 is the concrete column schematic cross-section of embodiment 1.
Fig. 2 is the FRP pipe dimensional structure diagrams of embodiment 1.
Fig. 3 is the FRP tube section schematic diagrames of embodiment 2.
Fig. 4 is the FRP tube section schematic diagrames of embodiment 3.
Fig. 5 is the FRP tube section schematic diagrames of embodiment 4.
Specific implementation mode
Embodiment 1
A kind of FRP pipe concrete coupled columns with reinforcing rib as shown in Figure 1, including as depicted in figs. 1 and 2 by FRP tube bodies 1
The FRP pipes formed with FRP protective layers 2, and the interior concrete core 3 of FRP pipes is filled, the cross section of the FRP pipes is chamfering
Rectangle, chamfer radius are typically no less than 25mm, and interior chamber size is 150mm*300mm, further include a row through concrete core 3,
Wing is unfolded to be anchored in the reinforcing rib of 1 outer wall of FRP tube bodies after both ends are pierced by the tube wall of FRP tube bodies 1 respectively；The reinforcing rib is by core
Bar 5, the FRP being coated on core bar 5 sets 4, and the positioning edge strip 6 being unfolded from 4 both ends wing of FRP sets form, the positioning side
Item 6 is adhered to the outer wall of FRP tube bodies 1, and the FRP sets 4 are entwined by FRP cloth, and the positioning edge strip 6 is to cover 4 both ends from FRP
The FRP cloth item of wing expansion.The solid hopkinson bar or hollow pipe of metal or plastic material may be used in core bar 5, such as reinforcing bar, pvc pipe.
The preparation method of the FRP pipe concrete coupled columns with reinforcing rib includes the following steps：
1）The FRP cloth for first one layer being impregnated with resin glue is wound on mold, and the cross section of the mold is chamfering rectangle, outer wall dimension
Have layer of plastic film for ease of demoulding for 150mm*300mm in die surface, wait for resin glue hardening about after five minutes, then
One layer of FRP cloth for being impregnated with resin glue is wound, three layers of FRP cloth of winding is so repeated and FRP tube bodies is made, the FRP cloth of adjacent layer is taken
Get along at least 150mm that is staggered at the place of connecing, to ensure FRP tube body integral strengths；Wait for that the resin glue on FRP tube bodies surface layer hardens about 5 minutes
Afterwards, it in one layer of resin compound protective layer of FRP tube surfaces brushing, shields to the fiber on FRP tube bodies surface layer, waits for that resin glue is protected
Sheath curing and demolding；In the present embodiment, FRP cloth is using CFRP（Carbon fibre reinforced composite）Cloth, this field skill
Art personnel can also use GFRP（Glass fibre reinforced composion）Or AFRP（Aramid fiber enhances composite material）Or BFRP
（Basalt fiber reinforced plastic/composite material）Or in which at least two combination；Resin glue is given birth to using current FRP cloth
The resin glue product that manufacturer provides together with FRP cloth is produced, mostly adhesive and curing agent is mixed in a certain ratio, wherein setting
Fat includes mainly epoxy resin, unsaturated polyester resin, vinylite, phenolic resin etc.；
2）The dipping part that middle part is impregnated with to the FRP cloth of resin glue is wrapped on core bar, to ensure the structural intergrity of FRP sets,
Its surface winds one layer tape again, and after dipping part is solidified into FRP sets, FRP is covered to the non-dipping part of the FRP cloth at both ends along long
Degree direction is cut into four FRP cloth items；It is punched in FRP tube two sides, after the difference punched out of FRP sets both ends, is in by FRP cloth item
Wing expansion is bonded in FRP tube walls with resin glue, then in one layer of resin compound protective layer of FRP tube surfaces brushing, to FRP
The fiber on tube body surface layer shields；
3）Use be impregnated with the FRP cloth of resin glue FRP tube walls continuous winding several as FRP protective layers, obtain with reinforcing
The FRP of muscle is managed, and waits for that the resin glue on FRP protective layers surface layer hardens about after five minutes, in one layer of resin glue of FRP protective layers brushing
Protective layer shields to the fiber on FRP protective layers surface layer, by the FRP pipes obtained with reinforcing rib under room temperature environment
Conserve 7 days or more；
4）In the FRP tube cavity concretings in lifts with reinforcing rib, the compactness requirement of mode and concrete core is poured
Meet associated construction standard, top surface is struck off, the obtained FRP pipe concrete coupled columns with reinforcing rib.
Oolemma has the performance advantage of the FRP pipe concrete coupled columns of reinforcing rib, pair cross-section basic size as evidence：150*
300mm, height：600mm, concrete material：The rectangular section of C25 without CFRP pipe concrete columns, without reinforcing rib CFRP pipe coagulations
The axial compression intensity of the CFRP Guan Ning local soil types zygostyle of local soil type's zygostyle and interval 50mm arrangement reinforcing ribs is tested respectively, is obtained
Following correction data：
As it can be seen that under identical chamfer radius, ultimate strength, the limit of the CFRP Guan Ning local soil types zygostyle of interval 50mm arrangement reinforcing ribs are answered
Change, ductility factor are substantially improved compared with no CFRP pipe concrete columns, with no reinforcing rib CFRP pipe concretes coupled column phase
Than also there is promotion by a relatively large margin, and the increase of chamfer radius can also further increase the CFRP pipes of interval 50mm arrangement reinforcing ribs
The various performance parameters of solidifying local soil type zygostyle.
Embodiment 2
A kind of FRP pipe concrete coupled columns with reinforcing rib as shown in Figure 3, including interior chamber size are 200mm*600mm's
FRP tube bodies 1 further include the lateral reinforcing rib of two row interval 200mm.
In preparation method, FRP protections are not arranged for 200mm*600mm for the outer mold wall size used outside FRP tube bodies 1
Layer, the core bar during FRP covers take out after FRP cloth is solidified into FRP sets.
Remaining implements such as embodiment 1.
Embodiment 3
A kind of FRP pipe concrete coupled columns with reinforcing rib as shown in Figure 4, including interior chamber size are the FRP of 300mm*300mm
Tube body 1 further includes two row lateral cross, longitudinally staggered reinforcing rib.
In preparation method, the outer mold wall size used is 200mm*200mm.
Remaining implements such as embodiment 1.
Embodiment 4
A kind of FRP pipe concrete coupled columns with reinforcing rib as shown in Figure 5, including the cross section that internal diameter is 200mm is round
FRP tube bodies 1, further include the reinforcing rib of two row right-angled intersections.
In preparation method, the mold outer diameter used is 200mm.
Remaining implements such as embodiment 1.
According to the internal diameter of FRP tube bodies 1, the reinforcing rib that groined type can also be used to intersect, adjacent two layers reinforcing rib can be with
The certain angle that is staggered is arranged.
Claims (9)
1. a kind of FRP pipe concrete coupled columns with reinforcing rib, it is characterised in that：Including FRP tube bodies（1）, and filling FRP
Tube body（1）Interior concrete core（3）, further include running through concrete core（3）, both ends be pierced by FRP tube bodies respectively（1）Tube wall
Wing expansion afterwards is anchored in FRP tube bodies（1）The reinforcing rib of outer wall.
2. a kind of FRP pipe concrete coupled columns with reinforcing rib as described in claim 1, it is characterised in that：The FRP pipes
Body（1）Outer wall is also wrapped on FRP protective layers（2）.
3. a kind of FRP pipe concrete coupled columns with reinforcing rib as claimed in claim 1 or 2, it is characterised in that：It is described to add
Strengthening tendons are covered by FRP（4）, and from FRP cover（4）The positioning edge strip of both ends wing expansion（6）Composition, the positioning edge strip（6）It is viscous
It is connected to FRP tube bodies（1）Outer wall.
4. a kind of FRP pipe concrete coupled columns with reinforcing rib as claimed in claim 3, it is characterised in that：The FRP sets
（4）In be provided with core bar（5）.
5. a kind of FRP pipe concrete coupled columns with reinforcing rib as claimed in claim 3, it is characterised in that：The FRP sets
（4）It is entwined by FRP cloth, the positioning edge strip（6）It is to be covered from FRP（4）The FRP cloth item of both ends wing expansion.
6. a kind of preparation method of the FRP pipe concrete coupled columns with reinforcing rib, it is characterised in that include the following steps：
1）The FRP cloth for being impregnated with resin glue is wound on mold, FRP tube bodies are made；
2）FRP sets are made with FRP cloth winding, FRP sets both ends are cut into several FRP cloth items along its length；In FRP tube bodies two
Side perforating, by FRP cover both ends FRP cloth item distinguish punched out, in wing expansion be anchored in FRP tube walls, become with plus
The FRP of strengthening tendons is managed；
3）To the inner cavity casting concrete of the FRP pipes of reinforcing rib, the FRP pipe concrete coupled columns with reinforcing rib are obtained.
7. a kind of preparation method of the FRP pipes with reinforcing rib as claimed in claim 6, it is characterised in that：Step 2）Being will
The dipping part that middle part is impregnated with the FRP cloth of resin glue is wrapped on core bar, after dipping part is solidified into FRP sets, is retained or is taken out
Core bar, the non-dipping part that FRP is covered to the FRP cloth at both ends are cut into several FRP cloth items along its length.
8. a kind of preparation method of the FRP pipes with reinforcing rib as claimed in claim 6, it is characterised in that：Further include in band
There are the FRP pipe outer walls cladding FRP protective layers of reinforcing rib.
9. a kind of preparation method of the FRP pipes with reinforcing rib as claimed in claim 6, it is characterised in that：Step 1）In mould
Have surface and has plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810051506.3A CN108331257A (en) | 2018-01-19 | 2018-01-19 | A kind of FRP pipe concrete coupled columns and preparation method thereof with reinforcing rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810051506.3A CN108331257A (en) | 2018-01-19 | 2018-01-19 | A kind of FRP pipe concrete coupled columns and preparation method thereof with reinforcing rib |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108331257A true CN108331257A (en) | 2018-07-27 |
Family
ID=62926295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810051506.3A Pending CN108331257A (en) | 2018-01-19 | 2018-01-19 | A kind of FRP pipe concrete coupled columns and preparation method thereof with reinforcing rib |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108331257A (en) |
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| CN103485481A (en) * | 2013-09-16 | 2014-01-01 | 北京工业大学 | Hybrid fiber winding steel tube internally-installed reactive powder concrete member and preparation method |
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| CN204456618U (en) * | 2015-02-02 | 2015-07-08 | 保定市华锐方正机械制造有限公司 | The special tension member of composite heat insulation block |
| CN205077712U (en) * | 2015-11-04 | 2016-03-09 | 王宇晨 | Foaming concrete compound insulation block |
| CN205894730U (en) * | 2016-06-21 | 2017-01-18 | 广东省建筑科学研究院集团股份有限公司 | Carbon cloth reinforced structure is pasted to reinforced concrete roof beam |
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2018
- 2018-01-19 CN CN201810051506.3A patent/CN108331257A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343950A (en) * | 2006-10-24 | 2009-01-14 | 菲尔（香港）有限公司 | Anchoring piece for reinforcing concrete structure, manufacturing method and using method thereof |
| CN201103240Y (en) * | 2007-10-26 | 2008-08-20 | 长业建设集团有限公司 | Expansion type drawknot screw |
| CN104015374A (en) * | 2009-01-21 | 2014-09-03 | 藤仓橡胶工业株式会社 | Method for producing FRP cylinder and FRP cylinder |
| CN202831378U (en) * | 2012-02-17 | 2013-03-27 | 交通运输部公路科学研究所 | Lightweight concrete combined member for FRP (fiber reinforce plastic) pipe |
| CN103195211A (en) * | 2013-04-25 | 2013-07-10 | 湖南大学 | FRP-RC (fiber reinforced polymer-reinforced concrete) combined beam partially constrained by fiber sleeve and construction method of combined beam |
| CN103485481A (en) * | 2013-09-16 | 2014-01-01 | 北京工业大学 | Hybrid fiber winding steel tube internally-installed reactive powder concrete member and preparation method |
| CN104005567A (en) * | 2014-05-07 | 2014-08-27 | 北京工业大学 | Ultra-high-performance concrete reinforced concrete column with fiber reinforced polymers wound around steel pipe |
| CN204456618U (en) * | 2015-02-02 | 2015-07-08 | 保定市华锐方正机械制造有限公司 | The special tension member of composite heat insulation block |
| CN205077712U (en) * | 2015-11-04 | 2016-03-09 | 王宇晨 | Foaming concrete compound insulation block |
| CN205894730U (en) * | 2016-06-21 | 2017-01-18 | 广东省建筑科学研究院集团股份有限公司 | Carbon cloth reinforced structure is pasted to reinforced concrete roof beam |
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Application publication date: 20180727 |
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| RJ01 | Rejection of invention patent application after publication |