CN114775910A - SFCB (reinforced plastic plate) reinforcement material anchoring device for SFCB concrete member - Google Patents
SFCB (reinforced plastic plate) reinforcement material anchoring device for SFCB concrete member Download PDFInfo
- Publication number
- CN114775910A CN114775910A CN202210273928.1A CN202210273928A CN114775910A CN 114775910 A CN114775910 A CN 114775910A CN 202210273928 A CN202210273928 A CN 202210273928A CN 114775910 A CN114775910 A CN 114775910A
- Authority
- CN
- China
- Prior art keywords
- sfcb
- sleeve
- wedge block
- block section
- concrete
- Prior art date
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000004873 anchoring Methods 0.000 title claims abstract description 33
- 239000004567 concrete Substances 0.000 title claims abstract description 27
- 230000002787 reinforcement Effects 0.000 title claims abstract description 13
- 239000002990 reinforced plastic Substances 0.000 title description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 15
- 239000004917 carbon fiber Substances 0.000 claims abstract description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004744 fabric Substances 0.000 claims abstract description 14
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- 239000004576 sand Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 5
- 210000002435 tendon Anatomy 0.000 claims 5
- 239000004593 Epoxy Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 238000002791 soaking Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract 1
- 229920001821 foam rubber Polymers 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an SFCB (reinforced form-factor band) reinforcement material anchoring device for a steel-continuous fiber composite reinforcement (SFCB for short) concrete member. Wherein the device material comprises: a wedge segment; grouting material; the sleeve is used for accommodating the wedge block section and the grouting material; and the carbon fiber cloth layer is used for wrapping the sleeve. In order to prevent the SFCB from slipping in the stress process, the end part of the SFCB is bonded into a wedge block by using epoxy resin and is embedded into the sleeve to form the mechanical anchorage. And filling grouting material into the accommodating cavity formed by the sleeve and the SFCB to form the bonding type anchorage device, and integrating the advantages of the mechanical anchorage device and the bonding type anchorage device. Meanwhile, the defects that a fiber layer is easy to clamp and break and the traditional mechanical anchor and a bonding anchor are easy to slide are overcome, and the safe and reliable bonding between the SFCB interface and the concrete and the end anchoring are ensured. The material used by the device is non-metallic material, can be used for SFCB concrete members serving in high-temperature, high-humidity and high-fog salt environments, also avoids the corrosion of the steel core at the end part of the SFCB, and can fully solve the problem of the durability of the marine concrete structure.
Description
Technical Field
The invention discloses an SFCB (reinforced plastic plate) reinforcement material anchoring device for an SFCB concrete member, and belongs to the field of composite material anchoring.
Background
The steel-continuous fiber composite rib (SFCB) is a novel composite rib which takes a steel bar as an inner core and wraps a continuous fiber on the outer layer, and combines the advantages of high elastic modulus, good ductility, high FRP rib strength and good corrosion resistance of the steel bar. For the marine damp and hot environment and the saline-alkali area engineering, the SFCB is an ideal corrosion-resistant substitute material for the steel bar. However, the shear strength of the fibers of the outer layer of the SFCB is low, if the conventional anchoring measures are adopted for the SFCB, the fiber layer is easy to shear and difficult to anchor, so that the slippage occurs between the SFCB and the concrete, and finally the bearing capacity of the member is early failed, so that the performance of the SFCB cannot be fully exerted. More importantly, the traditional anchoring device is mostly composed of a metal sleeve, a steel gasket and the like, and cannot protect the steel core of the end section of the SFCB from being corroded and be applied to a high corrosion-resistant environment; moreover, the mechanical properties of the novel composite material SFCB are greatly different from those of steel stranded wires and FRP bars, and the existing anchoring technology cannot meet the anchoring requirement of an SFCB concrete structure. Therefore, it is necessary to develop an SFCB reinforcement anchoring device which is matched with the characteristics of the SFCB material and can be used in the marine damp and hot environment and saline-alkali areas.
Disclosure of Invention
The invention aims to provide an SFCB reinforcement material anchoring device for an SFCB concrete member, which solves the defect that the existing device is not suitable for anchoring the SFCB reinforcement material, effectively improves the anchoring performance of the SFCB, and aims to solve the problems of anchoring and durability mentioned in the technical background.
In order to achieve the purpose, the invention provides the following technical scheme: an anchoring device for an SFCB concrete element, characterized in that: including wedge section, grout material, sleeve and carbon fiber cloth layer, wedge section embedding sleeve, the grout material is filled between SFCB and sleeve, the sleeve is used for holding wedge section and grout material, the carbon fiber cloth layer is used for wrapping up the sleeve.
The sleeve is formed by carbon fiber reinforced active powder concrete casting, the appearance characteristic of the sleeve is a combination of a quadrangular frustum and a cube, an axial inner cavity of the sleeve is sequentially provided with two circular truncated cone-shaped through holes with different sizes, the circular truncated cone through hole at the tail part is embedded with the wedge block section, and the circular truncated cone through hole at the end part is used for containing grouting materials.
The wedge block section is formed by pouring epoxy resin into a special die fixed at the end part of the SFCB, is characterized by being a circular table, is attached with fine sand on the outer surface, is embedded into the through hole of the circular table at the tail part of the sleeve in the claim 2 and is attached to the inner surface of the sleeve.
A layer of foam rubber is filled between the wedge block section of the embedded sleeve and the grouting material through the wedge block, so that the wedge block section is prevented from contacting with the grouting material, the wedge block is stressed to be tightened, and a certain displacement space exists.
The grouting material is filled in an accommodating cavity formed by the sleeve and the SFCB, and the used filling material is epoxy resin and is used for bonding the SFCB and the inner surface of the sleeve.
Compared with the prior art, the invention has the beneficial effects that:
1. the SFCB reinforcement material anchoring device integrates the advantages of a mechanical anchorage device and a bonding anchorage device, has simple structure and reasonable design, and can effectively solve the problem of premature failure of the bearing capacity of an SFCB concrete flexural member due to insufficient anchoring.
2. The material used by the anchoring device is carbon fiber reinforced active powder concrete, epoxy resin and carbon fiber cloth, which are all non-metallic materials, so that the anchoring device has good corrosion resistance, and can solve the problem of anchoring failure of the SFCB concrete member caused by corrosion of the metal anchoring device.
3. Utilize carbon cloth to wrap up the sleeve, satisfying under the prerequisite of required bond stress, can reduce sleeve size, in actual work progress, can bury anchor in the component.
Drawings
Fig. 1 is a schematic structural view of an SFCB reinforcement anchoring device of the present invention.
FIG. 2 is an enlarged view of I in FIG. 1.
Fig. 3 is a perspective view and three views of the sleeve.
Fig. 4 is a schematic structural view of a wedge segment.
FIG. 5 is a schematic view of the wedge segments and sleeve insert.
Fig. 6 is a perspective view and three views of a wedge segment mold.
In the figure: 1 part of sleeve, 2 parts of wedge block, 3 parts of grouting material, 4 parts of SFCB, 5 parts of carbon fiber cloth layer, 6 parts of fillet, 7 parts of foam rubber and 8 parts of attached sand layer
Detailed Description
The technical scheme of the invention will be further explained in detail with reference to the attached drawings.
Referring to fig. 1, the present invention provides a technical solution: the device comprises a sleeve (1), a wedge block section (2), grouting materials (3), an SFCB (4) and a carbon fiber cloth layer (5).
The sleeve (1) is formed by pouring carbon fiber reinforced active powder concrete into a special die, the appearance characteristic of the sleeve (1) is a combination of a quadrangular frustum pyramid and a cube, an axial inner cavity of the sleeve is sequentially provided with two round platform through holes with different sizes, the round platform through hole at the tail part is used for embedding a wedge block section (2), and the round platform through hole at the end part is used for containing grouting material (3).
The wedge block section (2) is formed by pouring epoxy resin into a special die fixed at the end part of the SFCB, the shape of the wedge block section is characterized by being a circular truncated cone, fine sand (8) is attached to the outer surface of the wedge block section and is attached to a through hole of the circular truncated cone at the tail part of the sleeve (1), and when the SFCB is stressed, in order to avoid stress concentration generated at the end part of the wedge block, the end part of the wedge block section is chamfered (7), as shown in figure 2.
The grouting material (3) is filled in a containing cavity formed by the sleeve (1) and the SFCB (4), and the used filling material is epoxy resin and is used for bonding the SFCB and the inner surface of the sleeve (1).
And the carbon fiber cloth layer (5) is used for wrapping the sleeve (1) to enhance the bond strength.
The invention discloses an installation method of an SFCB reinforcement anchoring device, which comprises the following steps:
the method comprises the following steps: preparing carbon fiber reinforced active powder concrete, pouring the newly-mixed carbon fiber reinforced active powder concrete into a special sleeve mold, vibrating, demolding after 24 hours, placing the mold in a curing pool, and curing for 7 days to obtain the sleeve (1) applied to the high-corrosion-resistant environment, disclosed by the claim 2, and shown in the figure 3.
Step two: fixing the special wedge block mold, shown in figure 6, on the end of the SFCB, pouring epoxy resin, and removing the mold after the epoxy resin is solidified, shown in figure 4.
Step three: glue is smeared on the outer surface of the wedge block section (3), fine sand is attached to the outer surface of the wedge block section (3), and the wedge block section (3) with the outer surface attached with the fine sand (8) is embedded into the circular truncated cone through hole at the tail part of the sleeve (1), as shown in figure 5.
Step four: and (3) coating foam rubber (7) on the wedge block section loading end embedded into the sleeve to avoid the contact of the wedge block section (2) and the grouting material (3), as shown in figure 2.
Step five: and filling the grouting material into a circular truncated cone-shaped through hole accommodating cavity formed by the sleeve (1) and the SFCB (4), wherein the filling material is epoxy resin.
Step six: and (3) wrapping the sleeve (1) by using the carbon fiber cloth soaked with the epoxy resin, and finishing the installation of the anchoring device after the epoxy resin is completely cured.
Step seven: and repeating the second step to the sixth step to complete the arrangement of the anchoring device at the other end of the SFCB, and binding the reinforcement cage of the SFCB subjected to anchoring treatment to pour the raw concrete of the component.
Claims (6)
1. An SFCB reinforcement anchoring device for an SFCB concrete member, characterized in that: including wedge block section (2), grout material (3), sleeve (1) and carbon cloth layer (5), wedge block section (2) closely bond with SFCB (4) tip, grout material (3) are filled between SFCB (4) and sleeve (2), the sleeve is used for holding wedge block section and bonding section, carbon cloth layer (5) are used for wrapping up the sleeve.
2. An SFCB tendon anchoring device for SFCB concrete elements as claimed in claim 1, characterised in that: the sleeve (1) is formed by pouring carbon fiber reinforced active powder concrete, and the compressive strength of the concrete 7d exceeds 200 MPa; the sleeve appearance is tailor-made to be the combination of four prismatic table and cubes, and sleeve (2) axial inner chamber is two circular table type through-holes that the size is different in proper order.
3. An SFCB tendon anchoring device for SFCB concrete members as claimed in claim 1 in which: carbon fiber cloth layer (5) are right by epoxy's carbon cloth of soaking the sleeve is wrapped up and is formed, utilize carbon cloth to wrap up sleeve (1), under the prerequisite that satisfies required bond strength, reduce sleeve size.
4. An SFCB tendon anchoring device for SFCB concrete elements as claimed in claim 1, characterised in that: the wedge block section (2) is formed by pouring epoxy resin into a special die fixed at the end part of the SFCB (4), is characterized by being a circular table in appearance, is tightly bonded with the SFCB (4) at the inner surface and is embedded into a circular table through hole at the tail part of the sleeve (1) in the claim 2.
5. An SFCB tendon anchoring device for SFCB concrete elements as claimed in claim 1, characterised in that: and the grouting material (3) is filled in a containing cavity formed by the sleeve and the SFCB and used for bonding the SFCB (4) and the inner surface of the sleeve (1).
6. An SFCB tendon anchoring device for SFCB concrete elements as claimed in claim 1, characterised in that: fine sand is smeared on the outer surface of the wedge block section (2), so that the wedge block section (2) attached with the fine sand (8) is embedded into the circular truncated cone through hole at the tail part of the sleeve (1); the outer surface of the wedge block section (2) is attached to the inner surface of the sleeve (1); the wedge block section (2) attached with the fine sand (8) can reduce the friction force between the outer surface of the wedge block section and the inner surface of the sleeve, and the bond wrapping effect of the sleeve (1) on the wedge block section (2) is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210273928.1A CN114775910A (en) | 2022-03-19 | 2022-03-19 | SFCB (reinforced plastic plate) reinforcement material anchoring device for SFCB concrete member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210273928.1A CN114775910A (en) | 2022-03-19 | 2022-03-19 | SFCB (reinforced plastic plate) reinforcement material anchoring device for SFCB concrete member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114775910A true CN114775910A (en) | 2022-07-22 |
Family
ID=82424596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210273928.1A Pending CN114775910A (en) | 2022-03-19 | 2022-03-19 | SFCB (reinforced plastic plate) reinforcement material anchoring device for SFCB concrete member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114775910A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2573772Y (en) * | 2002-07-19 | 2003-09-17 | 东南大学 | Prestressed FRP reinforcement adhering fastening body device |
| CN104372745A (en) * | 2014-11-25 | 2015-02-25 | 江苏法尔胜泓昇集团有限公司 | Anchoring method of carbon-fiber composite inhaul cable |
| CN112942685A (en) * | 2021-02-07 | 2021-06-11 | 哈尔滨工业大学 | Novel anchoring system and anchoring method for fiber reinforced resin composite material rod |
| CN113737787A (en) * | 2021-08-23 | 2021-12-03 | 哈尔滨工业大学 | Extrusion-bonding type anchoring system and anchoring method for FRP rod body |
-
2022
- 2022-03-19 CN CN202210273928.1A patent/CN114775910A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2573772Y (en) * | 2002-07-19 | 2003-09-17 | 东南大学 | Prestressed FRP reinforcement adhering fastening body device |
| CN104372745A (en) * | 2014-11-25 | 2015-02-25 | 江苏法尔胜泓昇集团有限公司 | Anchoring method of carbon-fiber composite inhaul cable |
| CN112942685A (en) * | 2021-02-07 | 2021-06-11 | 哈尔滨工业大学 | Novel anchoring system and anchoring method for fiber reinforced resin composite material rod |
| CN113737787A (en) * | 2021-08-23 | 2021-12-03 | 哈尔滨工业大学 | Extrusion-bonding type anchoring system and anchoring method for FRP rod body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107575257B (en) | The anchoring process of anchor tool system for fibre-reinforced high molecular material bar | |
| Nanni et al. | Performance of FRP tendon-anchor systems for prestressed concrete structures | |
| US9322172B2 (en) | Concrete structure member strengthened with prestressed FRP elements | |
| CN101503881B (en) | Method for reinforcing underwater structure by fiber-reinforced composite material grid ribs | |
| CN109797910B (en) | Clamping piece for anchoring FRP (fiber reinforced Plastic) rib, machining method and anchoring method | |
| CN110469056B (en) | Combined anchorage device for fiber reinforced composite material inhaul cable and preparation method | |
| Hao et al. | Bond strength improvement of GFRP rebars with different rib geometries | |
| CN114775910A (en) | SFCB (reinforced plastic plate) reinforcement material anchoring device for SFCB concrete member | |
| CN110725547A (en) | Compact steel strand inhaul cable and manufacturing method thereof | |
| CN112942685B (en) | Novel anchoring system and anchoring method for fiber reinforced resin composite material rod | |
| CN111070735B (en) | Preparation and application method of prestressed shape memory alloy-continuous fiber composite bar | |
| CN115094754B (en) | CFRP (carbon fiber reinforced plastic) cold cast group anchor inhaul cable added with Fe-SMA (shape memory alloy) sleeve and anchor method | |
| CN116290888A (en) | Structure and method for prolonging service life of reinforced concrete building | |
| CN113338543B (en) | Prestressed anchoring system and anchoring method for FRP (fiber reinforced Plastic) rod | |
| CN206529968U (en) | A kind of attachment means of the multiple material muscle of fiber | |
| JP7085539B2 (en) | Manufacturing method and equipment for concrete components | |
| CN208219389U (en) | Based on short-line prefabrication assembly girder construction | |
| CN205975361U (en) | FRP cable ground tackle | |
| CN217871405U (en) | Slow-bonding prestress rib bundle, tensioning end anchorage device and fixing end anchorage device | |
| CN205976542U (en) | Glass fiber reinforced prestressing force anti -floating anchor rod loading device | |
| CN117780020A (en) | Wedge SFCB anchor | |
| CN113200707B (en) | Low-temperature curing chill casting filler for carbon fiber cable chill casting anchorage device and manufacturing method thereof | |
| Safan | Mechanical properties of locally produced hybrid FRP bars as concrete reinforcement | |
| CN118166969A (en) | FRP rib anchoring system with non-cured end part and anchoring method | |
| CN217027755U (en) | Anchoring system for fiber reinforced composite material rib |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220722 |