CN107060852A - A kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires - Google Patents
A kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires Download PDFInfo
- Publication number
- CN107060852A CN107060852A CN201710053887.4A CN201710053887A CN107060852A CN 107060852 A CN107060852 A CN 107060852A CN 201710053887 A CN201710053887 A CN 201710053887A CN 107060852 A CN107060852 A CN 107060852A
- Authority
- CN
- China
- Prior art keywords
- frp
- steel strand
- strand wires
- bolts
- hollow
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 206010039509 Scab Diseases 0.000 claims abstract description 7
- 238000005260 corrosion Methods 0.000 claims abstract description 7
- 230000007797 corrosion Effects 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 12
- 238000013007 heat curing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 229920002748 Basalt fiber Polymers 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 33
- 239000011151 fibre-reinforced plastic Substances 0.000 description 33
- 238000001723 curing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0013—Protection against corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires, the hollow grouting anchoring-bolt includes the hollow thread body of rod, nut, backing plate, stop grouting plug, adapter sleeve, anchor head；The screw thread body of rod includes steel strand wires, the sand of FRP layers and FRP layer surfaces.Thin steel strand wires are embedded in FRP hollow anchor bars, FRP and the respective advantage of steel strand wires can be comprehensively utilized, the problem of fundamentally solving steel strand wires easy-to-rust, poor durability and big quality in underground engineering, and improve the mechanical characteristic that FRP modulus of elasticity is low, deform greatly and be in brittle break.Prepare the FRP hollow grouting anchoring-bolts for the advantages of taking into account lightweight, high intensity, high elastic modulus, high ductility, high performance-price ratio and excellent corrosion resistance.Using filament by the surface wrap of FRP hollow grouting anchoring-bolts into shape of threads and in its surface scab, it is ensured that the reliable bond between anchor pole and concrete.The hollow grouting anchoring-bolt to mechanical property and decay resistance suitable for requiring high underground engineering support system that application prospect is extensive.
Description
Technical field
Researched and developed the invention belongs to the composite in the fields such as building, traffic, water conservancy, new construction, and in particular to be used for one kind
The FRP hollow grouting anchoring-bolts of the embedded steel strand wires of underground engineering support system, its feature is lightweight, high intensity, high resiliency mould
Amount, high ductility and excellent decay resistance.
Background technology
Hollow grouting anchoring-bolt is one of support form for commonly using in underground engineering, and it is excellent that flexible modulus is high, ductility is good etc.
Point.Hollow grouting anchoring-bolt is often by the part as underground engineering permanent support, and this requires the anchor pole to have well durable
Property.Because of underground water enrichment, bad environments, the problem of hollow grouting anchoring-bolt has easy corrosion, poor durability in underground engineering.
Fibre reinforced plastics (FRP) are by the continuous tow with drawing-resistant function and the polymeric matrix with cementation
Two parts are constituted.FRP anchor poles are suitable in terms of Service Environment, durability as a kind of new construction material for having development potentiality
It is required that high important engineering structure, such as underground structure, ocean structure.But FRP anchor poles are still suffered from, and modulus of elasticity is low, deformation is big,
Price is high and the problem of in brittle break.
Thin steel strand wires are embedded in FRP hollow anchor bars, FRP and the respective advantage of thin steel strand wires can be comprehensively utilized, from basic
The problem of upper solution steel strand wires corrosion, and improve FRP mechanical property, prepare take into account lightweight, high intensity, high elastic modulus,
The FRP hollow grouting anchoring-bolts of the advantages of high ductility, high performance-price ratio and excellent corrosion resistance；Reliably arranged, it is necessary to take in practice
Apply the reliable bond between guarantee anchor pole and concrete.Based on above mentioned problem, the FRP that the present invention proposes a kind of embedded steel strand wires is empty
Heart grouted anchor bar.
The content of the invention
The purpose of the present invention is that there is provided a kind of corrosion resistance and good, cost performance height, ductility in view of the shortcomings of the prior art
The FRP hollow grouting anchoring-bolts of good, modulus of elasticity and the high embedded steel strand wires of intensity.
To achieve these goals, the technical solution adopted in the present invention is：A kind of FRP drain castings of embedded steel strand wires
Anchor pole, the hollow grouting anchoring-bolt includes the hollow thread body of rod, nut, backing plate, stop grouting plug, adapter sleeve, anchor head；Anchor head is arranged on spiral shell
The head of rasp bar body, is connected two screw thread bodies of rod by adapter sleeve, and stop grouting plug is fixed on the screw thread body of rod with backing plate by nut
Afterbody.
The described screw thread body of rod includes steel strand wires, the sand of FRP layers and FRP layer surfaces；Thin steel strand wires are evenly distributed on FRP layers
In, thin steel strand wires are combined with each other with FRP layers by pultrusion molding process, and its surface then is wound in into shape of threads with filament
And in its surface scab.
Described adapter sleeve, stop grouting plug, backing plate and anchor head is FRP material.
Described FRP layers are composited by continuous fiber and thermosetting resin, and fiber selects basalt fibre, glass fibers
Dimension, carbon fiber or aramid fiber.
According to required mechanical performance index, the volume ratio of FRP material and steel strand wires is calculated according to composite theory.
The mould of pultrusion is the forming hollow element mould with interior external mold.
A kind of preparation technology of the FRP hollow grouting anchoring-bolt bodies of embedded steel strand wires is：Send yarn and steel strand wires → fiber impregnation
→ the collection of filaments → by mould pultrusion → surface is wound in shape of threads → heat cure shaping → surface scab through fiber.
A kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires of the present invention, are twisted thin steel by pultrusion heat cure moulding process
Line and FRP material are solidified togather, and enable steel strand wires and the common stress of FRP, it is ensured that the anchor pole has good ductility.
FRP layers are protected internal steel strand wires from environmental corrosion.The FRP hollow grouting anchoring-bolts surface is shape of threads and is stained with sand, it is ensured that
Its effective bonding with concrete.The hollow grouting anchoring-bolt is applied to require high underground to mechanical property and decay resistance
In engineering support system.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the FRP hollow grouting anchoring-bolt bodies of embedded steel strand wires；
Fig. 2 is Fig. 1 element cross-section figures.
Embodiment
Below in conjunction with the accompanying drawings and technical scheme is explained in detail embodiment.
As depicted in figs. 1 and 2, this example provides a kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires, and the structure is by screw thread
The body of rod 1, nut 2, adapter sleeve 5, stop grouting plug 4, backing plate 3 and anchor head 6 are constituted.Anchor head 6 is arranged on the head of the screw thread body of rod 1, passes through
Adapter sleeve 5 connects two screw thread bodies of rod 1, and stop grouting plug 4 is fixed on the afterbody of the screw thread body of rod 1 with backing plate 3 by nut 2.
The described screw thread body of rod 1 is made up of the sand 13 of thin steel strand wires 11, FRP layers 12 and FRP surfaces.Described nut 2, even
Female connector 5, stop grouting plug 4, backing plate 3 and anchor head 6 are FRP material.
The thin steel strand wires 11 and fibre bundle of infiltrating epoxy resin are sent into ring mould together according to a certain percentage to be drawn
The volume ratio of extrusion forming, fibre bundle and the epoxy resin-base after being heating and curing is 2~3；Then carried out using heat curing process
Curing molding, prepares the screw thread body of rod 1 of embedded steel strand wires.The sectional area of described FRP layers 12 accounts for the screw thread body of rod total sectional area
35~40%.Then the surface of the screw thread body of rod 1 is wound in shape of threads with filament and in its surface scab 13.
A kind of preparation technology of the FRP hollow grouting anchoring-bolt bodies of embedded steel strand wires is：Send yarn and thin 11 → fiber of steel strand wires
Impregnation → the collection of filaments → by mould pultrusion → surface through fiber be wound in shape of threads → heat cure shaping → surface glue
Sand 13.
The present invention is using traditional pultrusion heat cure moulding process, and scrap build requirement is little, and application prospect is extensive.
Claims (5)
1. a kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires, it is characterised in that：The hollow grouting anchoring-bolt includes hollow thread bar
Body, nut, backing plate, stop grouting plug, adapter sleeve, anchor head；Anchor head is arranged on the head of the screw thread body of rod, by adapter sleeve by two screw threads
The body of rod is connected, and stop grouting plug is fixed on the afterbody of the screw thread body of rod with backing plate by nut；
The described hollow thread body of rod includes steel strand wires, FRP layers and scab；Thin steel strand wires pass through pultrusion heat cure with FRP material
Moulding process is combined with each other, and thin steel strand wires are evenly distributed in FRP layers, then with filament FRP layers surface wrap into
Shape of threads simultaneously carries out scab on its surface；
Described adapter sleeve, stop grouting plug, backing plate and anchor head is FRP material；
Described FRP layers is composited by continuous fiber and thermosetting resin, and continuous fiber is basalt fibre, glass fibre, carbon
Fiber or aramid fiber.
2. a kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires according to claim 1, it is characterised in that：According to required
Mechanical performance index, the volume ratio of FRP material and steel strand wires is calculated according to composite theory.
3. a kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires according to claim 1, it is characterised in that：It is described into
Pattern tool is the hollow unit mould with interior external mold.
4. a kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires according to claim 1, it is characterised in that：Described sky
The preparation technology of the heart screw thread body of rod is：Send yarn and steel strand wires → fiber impregnation → collection of filaments → by mould pultrusion → table
Face is wound in shape of threads → heat cure shaping → surface scab through fiber.
5. a kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires according to claim 1, it is characterised in that：Pass through pultrusion
Thin steel strand wires and FRP material are solidified togather by heat cure moulding process, enable steel strand wires and the common stress of FRP, it is ensured that should
Anchor pole has good ductility；FRP layers are protected internal steel strand wires from environmental corrosion；The FRP hollow grouting anchoring-bolts surface is spiral shell
Line shape is simultaneously stained with sand, it is ensured that its effective bonding with concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710053887.4A CN107060852A (en) | 2017-01-22 | 2017-01-22 | A kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710053887.4A CN107060852A (en) | 2017-01-22 | 2017-01-22 | A kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107060852A true CN107060852A (en) | 2017-08-18 |
Family
ID=59598583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710053887.4A Pending CN107060852A (en) | 2017-01-22 | 2017-01-22 | A kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107060852A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101988A (en) * | 2020-02-17 | 2020-05-05 | 天地科技股份有限公司 | Anchor rod cable support system and method for coal mine impact mine pressure or large deformation roadway |
| CN113513518A (en) * | 2021-04-16 | 2021-10-19 | 海盐欣远科技股份有限公司 | Implanted connecting dental strip for tunnel wall |
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|---|---|---|---|---|
| CN102021886A (en) * | 2009-09-09 | 2011-04-20 | 柳州欧维姆机械股份有限公司 | Mixed type fiber reinforced polymer (FRP) rib for bridge cable and manufacture method of FRP rib |
| CN104060768A (en) * | 2014-06-19 | 2014-09-24 | 四川航天五源复合材料有限公司 | Industrial preparation method of steel-continuous-fiber composite bar with rib texture |
| CN204419218U (en) * | 2015-01-16 | 2015-06-24 | 安徽理工大学 | A kind of novel combination type steel strand anchor rod |
| CN204475327U (en) * | 2015-02-28 | 2015-07-15 | 安徽理工大学 | A kind of novel fabricated anchor pole with cage of reinforcement |
| CN204511480U (en) * | 2015-02-28 | 2015-07-29 | 安徽理工大学 | A kind of Novel hollow grouted anchor bar with multistage branch |
| CN104842569A (en) * | 2015-05-27 | 2015-08-19 | 郑州大学 | Composite FRP bar, preparation process and preparation device |
| CN105252689A (en) * | 2015-10-19 | 2016-01-20 | 江苏中南建筑产业集团有限责任公司 | Manufacturing method for environment-friendly fiber reinforced plastic (FRP) iron wire compound type anchor rod |
| CN205259457U (en) * | 2015-12-21 | 2016-05-25 | 郑州大学 | Novel compound FRP muscle |
| CN205255540U (en) * | 2015-12-21 | 2016-05-25 | 郑州大学 | Compound FRP muscle preparation equipment |
-
2017
- 2017-01-22 CN CN201710053887.4A patent/CN107060852A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021886A (en) * | 2009-09-09 | 2011-04-20 | 柳州欧维姆机械股份有限公司 | Mixed type fiber reinforced polymer (FRP) rib for bridge cable and manufacture method of FRP rib |
| CN104060768A (en) * | 2014-06-19 | 2014-09-24 | 四川航天五源复合材料有限公司 | Industrial preparation method of steel-continuous-fiber composite bar with rib texture |
| CN204419218U (en) * | 2015-01-16 | 2015-06-24 | 安徽理工大学 | A kind of novel combination type steel strand anchor rod |
| CN204475327U (en) * | 2015-02-28 | 2015-07-15 | 安徽理工大学 | A kind of novel fabricated anchor pole with cage of reinforcement |
| CN204511480U (en) * | 2015-02-28 | 2015-07-29 | 安徽理工大学 | A kind of Novel hollow grouted anchor bar with multistage branch |
| CN104842569A (en) * | 2015-05-27 | 2015-08-19 | 郑州大学 | Composite FRP bar, preparation process and preparation device |
| CN105252689A (en) * | 2015-10-19 | 2016-01-20 | 江苏中南建筑产业集团有限责任公司 | Manufacturing method for environment-friendly fiber reinforced plastic (FRP) iron wire compound type anchor rod |
| CN205259457U (en) * | 2015-12-21 | 2016-05-25 | 郑州大学 | Novel compound FRP muscle |
| CN205255540U (en) * | 2015-12-21 | 2016-05-25 | 郑州大学 | Compound FRP muscle preparation equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101988A (en) * | 2020-02-17 | 2020-05-05 | 天地科技股份有限公司 | Anchor rod cable support system and method for coal mine impact mine pressure or large deformation roadway |
| CN111101988B (en) * | 2020-02-17 | 2021-05-14 | 天地科技股份有限公司 | Anchor rod cable support system and method for coal mine impact mine pressure or large deformation roadway |
| CN113513518A (en) * | 2021-04-16 | 2021-10-19 | 海盐欣远科技股份有限公司 | Implanted connecting dental strip for tunnel wall |
| CN113513518B (en) * | 2021-04-16 | 2023-02-28 | 海盐欣远科技股份有限公司 | Implanted connecting dental strip for tunnel wall |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170818 |