CN108149848A - The composite anchorage and its installation method of FRP presstressed reinforcing steels - Google Patents
The composite anchorage and its installation method of FRP presstressed reinforcing steels Download PDFInfo
- Publication number
- CN108149848A CN108149848A CN201810149465.1A CN201810149465A CN108149848A CN 108149848 A CN108149848 A CN 108149848A CN 201810149465 A CN201810149465 A CN 201810149465A CN 108149848 A CN108149848 A CN 108149848A
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- China
- Prior art keywords
- presstressed reinforcing
- reinforcing steels
- anchor ring
- frp
- frp presstressed
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
Abstract
The present invention relates to a kind of composite anchorages and its installation method of FRP presstressed reinforcing steels, belong to anchorage technology field.FRP presstressed reinforcing steels and anchor including interconnection, the anchor includes fixing end and stretching end, the fixing end includes anchor ring, intermediate plate, soft metal casing, FRP presstressed reinforcing steels pass through binding agent and soft metal casing connection, intermediate plate is clipped in outside the casing of soft metal, and the stretching end includes anchor ring, intermediate plate, soft metal casing, tensioning bolt, adjustable nut；In the end of anchor ring, adjustable nut is adjusted four tensioning bolt weldings on tensioning bolt.The present invention is suitable for the FRP presstressed reinforcing steels of various section forms, combine mechanical anchorage and bond type anchorage, and high capacity, simple structure, easy for construction, speed of application are fast, good economical benefit, avoid the problem of FRP presstressed reinforcing steels are cut easy fracture in anchoring procedure, reduce cost.
Description
Technical field
The invention belongs to anchorage technology field, composite anchorage and its installation more particularly to a kind of FRP presstressed reinforcing steels
Method.
Background technology
The development of overwood engineering discipline is largely dependent upon the new diseases haveing excellent performance and development.It is such as right
In traditional reinforcing bar, the new material that a kind of intensity is high, light-weight and durability is good should be found to substitute adding for existing structure
Gu, repair and transformation, should be the excellent properties such as to significantly improve with structural bearing capacity after specific strength height, quick construction, construction
Material is replaced.Therefore, the excellent composite material of utility, which is updated traditional material, is transformed into century wood engineering neck
The great research topic of domain sustainable development.
Bond type anchorage includes resin bushing anchorage and resin-encapsulated anchorage.Sleeve anchorage be inner surface it is threaded or warp
Resin sand or cement is perfused in the metal of machining deformation or nonmetallic sleeve and is made.This kind of form anchorage shortcoming is that anchorage is long
Degree is big, impact resistance is poor, creep and anti humid heat endurance issues.Experimental study and finite element analysis show, anchoring resin
The rigidity of filler becomes larger from anchoring front end to rear end, can obtain satisfied anchoring effect.Based on this, it is firm that Japan develops change
Spending resin-encapsulated anchorage, static(al) and the fine European Company of Fatigue Anchorage Property will be bonded for analysing bridge intermediate plate similar to anchorage
Intermediate plate with fat formula anchorage with reference to and the anchorage developed, such anchorage can be used for the anchoring of more FRP tendons.
FRP, fibre-reinforced plastics are English（Fiber Reinforced Plastics ）Abbreviation, it is existing
CFRP, GFRP, AFRP, BFRP etc..That fiberglass refers in Chinese is exactly GFRP.FRP composite materials are by fibrous material and matrix
The high-performance section bar material that material is formed after mixing according to a certain percentage.Wherein GFRP has according to used resin variety difference
The types such as organic toughened glass, fiber glass epoxy, phenolic fiberglass reinforced plastics.General FRP has light and hard, non-conductive, high mechanical strength,
Recycle few, the characteristics such as corrosion-resistant.
FRP is with its excellent mechanical property and adapts to modern project structure to greatly across the need of, towering, heavily loaded, lightweight development
It asks, is just applied in science of bridge building, all kinds of civil buildings, ocean engineering, underground engineering more and more widely, by structure
Engineering circles extensive concern.
The tensile strength of FRP is high, and the tensile strength of FRP is obviously higher than reinforcing bar, with high tensile steel wire tensile strength difference not
More, usually 2 times of reinforcing bar are even up to 10 times；Coefficient of thermal expansion is close with concrete, in this way when environment temperature changes
When, FRP and concrete co-ordination will not generate big temperature stress between the two；Compared with steel, most of FRP products
Elasticity modulus is small；It is polymerized because FRP is fiber by matrix, intensity is determined by matrix between fiber（Intensity is generally weaker than fibre
Dimension）, so weaker perpendicular to machine direction intensity；FRP material is anticorrosive, anti-fatigue performance is good, can acid, alkali, villaumite and
It is used for a long time in moist environment, thus the service life of structure can be improved, this is that structural material hardly matches.
FRP tendons tensile strength is high, is well suited for for prestressed concrete, but lateral shear resistance not as good as steel it is good.It is and same
When working tension and the composite stress state of transverse pressure be but present in the anchor tool system of anchoring prestress muscle.When principal stress surpasses
When crossing the critical value of muscle and being broken, the tensile strength for making muscle is not in full use.Bond type anchorage and strand tapered anchorage
There is the limitation of its own.Bond type anchorage due to needing larger anchorage length, and strand tapered anchorage be in for a long time it is larger
Cause the FRP tendons sensitive to damage that fatigue rupture easily occurs since the rigidity of intermediate plate small end is larger under Fatigue Stress Amplitude state, because
This, needs to design novel anchorage.
Invention content
In order to solve above-mentioned technical problem, the present invention provide a kind of FRP presstressed reinforcing steels composite anchorage and its
Installation method, it is pre- mainly for developing a kind of clear and definite power transmission, simple structure, safe and reliable, saving material and FRP easy for construction
The composite anchorage of stress rib can effectively solve the problems such as FRP presstressed reinforcing steels are cut easy fracture in anchoring procedure.
The technical solution adopted by the present invention is as follows：
The composite anchorage of FRP presstressed reinforcing steels, the FRP presstressed reinforcing steels including interconnection（1）With anchor（2）, the anchor
It is fixedly mounted with and puts（2）Including fixing end（3）And stretching end（4）, the fixing end（3）Including anchor ring（5）, intermediate plate（6）, soft metal casing
（7）, FRP presstressed reinforcing steels（1）Pass through binding agent（8）With soft metal casing（7）Connection, the stretching end（4）Including anchor ring（5）、
Intermediate plate（6）, soft metal casing（7）, tensioning bolt（9）, adjustable nut（10）；The anchor ring（5）It is internal to pass through for square
Logical truncated cone-shaped hole, Single port is small, and another port is big, the intermediate plate（6）For three-chip type, size and anchor ring（5）Round platform
Shape hole is mutually matched and can be stuck in anchor ring（5）It is interior, it is clipped in soft metal casing（7）Outside；Four tensioning bolts（9）Point
Anchor ring is not welded on it（5）The small one end of hole, fixed plate（11）On stay and cause tensioning bolt there are four hole（9）It passes through, it is adjustable
Nut（10）Positioned at tensioning bolt（9）Into fixed plate（11）Side, adjustable nut（10）In tensioning bolt（9）Adjusting position
So as to adjust anchor ring（5）Position so that anchor FRP presstressed reinforcing steels（1）.
Further, the binding agent（8）Preferentially use high-performance epoxy resin.
Further, the anchor ring（5）, intermediate plate（6）, tensioning bolt（9）, adjustable nut（10）Preferentially use corrosion-resisting aluminium
Alloying metal is formed.
Further, the soft metal casing（7）Preferentially using aluminum metal sleeve, length compares anchor ring（5）, intermediate plate
（6）Length it is long.
Further, the adjustable nut（10）With fixed plate（11）Contact surface at set gasket ring（12）.
The installation method of the composite anchorage of FRP presstressed reinforcing steels, includes the following steps：
A. binding agent is utilized（8）Connect FRP presstressed reinforcing steels（1）With soft metal casing（7）；
B. anchor ring is determined（5）Position, install intermediate plate（6）It is anchored；
C. pass through adjustable nut（10）Adjust tensioning bolt（9）Complete anchoring.
Beneficial effects of the present invention：
Advantages and advantages of the invention apply to the FRP presstressed reinforcing steels of various section forms, combine mechanical anchorage
And bond type anchorage, and high capacity, simple structure, easy for construction, speed of application are fast, good economical benefit, avoid FRP and in advance should
Power muscle is cut the problem of easy fracture in anchoring procedure, reduces cost.
Description of the drawings
Fig. 1 is the overall structure diagram of the composite anchorage of FRP presstressed reinforcing steels of the present invention；
Fig. 2 is composite anchorage stretching end cross-sectional view in Fig. 1；
Fig. 3 is composite anchorage fixing end cross-sectional view in Fig. 1；
Fig. 4 is composite anchorage stretching end left side view in Fig. 1；
Fig. 5 is composite anchorage stretching end right side view in Fig. 1.
In figure, 1 is FRP presstressed reinforcing steels；2 be anchor；3 be fixing end；4 be stretching end；5 be anchor ring；6 be intermediate plate；7
For soft metal casing；8 be binding agent；9 be tensioning bolt；10 be adjustable nut；11 be fixed plate；12 be gasket ring.
Specific embodiment
In order to further illustrate the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments, but not
They can be interpreted as limiting the scope of the present invention.
Embodiment：As Figure 1-Figure 5, the composite anchorage of FRP presstressed reinforcing steels of the present invention, the FRP including interconnection
Presstressed reinforcing steel 1 and anchor 2, the anchor 2 include fixing end 3 and stretching end 4, the fixing end 3 include anchor ring 5,
Intermediate plate 6, soft metal casing 7, FRP presstressed reinforcing steels 1 are connect by binding agent 8 with soft metal casing 7, and the stretching end 4 includes anchor
Ring 5, intermediate plate 6, soft metal casing 7, tensioning bolt 9, adjustable nut 10；The anchor ring 5 is square, and internal is the circle of perforation
Platform shape hole, Single port is small, and another port is big, and the intermediate plate 6 is three-chip type, and size and the truncated cone-shaped hole of anchor ring 5 are mutual
It matches and can be stuck in anchor ring 3, be clipped in outside soft metal casing 7；Four tensioning bolts 9 are respectively welded at 5 hole of anchor ring
The small one end in hole is stayed in fixed plate 11 there are four hole so that tensioning bolt 9 passes through, adjustable nut 10 be located at tensioning bolt 9 into
Enter the side of fixed plate 11, adjustable nut 10 is in 9 adjusting position of tensioning bolt so as to adjust the position of anchor ring 5 and then anchor FRP
Presstressed reinforcing steel 1.
As shown in Figure 1, Figure 2, Figure 3 shows, the binding agent 8 preferentially uses high-performance epoxy resin.
As shown in Figure 2 and Figure 3, the anchor ring 5, intermediate plate 6, tensioning bolt 9, adjustable nut 10 are preferentially closed using corrosion-resisting aluminium
Metal is formed.
As shown in Figure 1, Figure 2, Figure 3 shows, the soft metal casing 7 is preferentially using aluminum metal sleeve, length than anchor ring 5,
The length of intermediate plate 6 is long.
As shown in Figure 1 and Figure 2, gasket ring 12 is set at the adjustable nut 10 and the contact surface of fixed plate 11.
The installation method of the composite anchorage of FRP presstressed reinforcing steels, includes the following steps：A. it is pre- to connect FRP using binding agent 8
Stress rib 1 and soft metal casing 7；B. the position of anchor ring 5 is determined, installation intermediate plate 6 is anchored；C. it is adjusted by adjustable nut 10
Tensioning bolt 9 completes anchoring.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of composite anchorage of FRP presstressed reinforcing steels, it is characterised in that：FRP presstressed reinforcing steels including interconnection（1）With anchor
It is fixedly mounted with and puts（2）, the anchor（2）Including fixing end（3）And stretching end（4）, the fixing end（3）Including anchor ring（5）, folder
Piece（6）, soft metal casing（7）, FRP presstressed reinforcing steels（1）Pass through binding agent（8）With soft metal casing（7）Connection, the stretching end
（4）Including anchor ring（5）, intermediate plate（6）, soft metal casing（7）, tensioning bolt（9）, adjustable nut（10）；The anchor ring（5）For just
Cube, the internal truncated cone-shaped hole for perforation, Single port is small, and another port is big, the intermediate plate（6）For three-chip type, size
With anchor ring（5）Truncated cone-shaped hole be mutually matched and anchor ring can be stuck in（5）It is interior, it is clipped in soft metal casing（7）Outside；Described four
Root tensioning bolt（9）It is respectively welded at anchor ring（5）The small one end of hole, fixed plate（11）On stay and cause tensioning spiral shell there are four hole
Bolt（9）It passes through, adjustable nut（10）Positioned at tensioning bolt（9）Into fixed plate（11）Side, adjustable nut（10）In tensioning
Bolt（9）Adjusting position is so as to adjust anchor ring（5）Position so that anchor FRP presstressed reinforcing steels（1）.
2. the composite anchorage of FRP presstressed reinforcing steels according to claim 1, it is characterised in that：The binding agent（8）Preferentially adopt
Use high-performance epoxy resin.
3. the composite anchorage of FRP presstressed reinforcing steels according to claim 1, it is characterised in that：The anchor ring（5）, intermediate plate
（6）, tensioning bolt（9）, adjustable nut（10）Preferentially formed using anticorrosion aluminium metal.
4. the composite anchorage of FRP presstressed reinforcing steels according to claim 1, it is characterised in that：The soft metal casing（7）It is excellent
First using aluminum metal sleeve, length compares anchor ring（5）, intermediate plate（6）Length it is long.
5. the composite anchorage of FRP presstressed reinforcing steels according to claim 1, it is characterised in that：The adjustable nut（10）With
Fixed plate（11）Contact surface at set gasket ring（12）.
The installation method of the composite anchorage of 6.FRP presstressed reinforcing steels, it is characterised in that：Include the following steps：
A. binding agent is utilized（8）Connect FRP presstressed reinforcing steels（1）With soft metal casing（7）；
B. anchor ring is determined（5）Position, install intermediate plate（6）It is anchored；
C. pass through adjustable nut（10）Adjust tensioning bolt（9）Complete anchoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810149465.1A CN108149848A (en) | 2018-02-13 | 2018-02-13 | The composite anchorage and its installation method of FRP presstressed reinforcing steels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810149465.1A CN108149848A (en) | 2018-02-13 | 2018-02-13 | The composite anchorage and its installation method of FRP presstressed reinforcing steels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108149848A true CN108149848A (en) | 2018-06-12 |
Family
ID=62457430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810149465.1A Withdrawn CN108149848A (en) | 2018-02-13 | 2018-02-13 | The composite anchorage and its installation method of FRP presstressed reinforcing steels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108149848A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109797910A (en) * | 2019-03-04 | 2019-05-24 | 东南大学 | A kind of FRP tendons anchoring intermediate plate, processing method and anchoring process |
| CN112376802A (en) * | 2020-11-18 | 2021-02-19 | 南通装配式建筑与智能结构研究院 | Composite anchorage device for FRP inhaul cable and mounting method |
| CN112376803A (en) * | 2020-11-18 | 2021-02-19 | 南通装配式建筑与智能结构研究院 | FRP (fiber reinforced plastic) steel strand composite rib anchorage device and anchoring method |
| 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 |
-
2018
- 2018-02-13 CN CN201810149465.1A patent/CN108149848A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109797910A (en) * | 2019-03-04 | 2019-05-24 | 东南大学 | A kind of FRP tendons anchoring intermediate plate, processing method and anchoring process |
| CN109797910B (en) * | 2019-03-04 | 2021-02-26 | 东南大学 | Clamping piece for anchoring FRP (fiber reinforced Plastic) rib, machining method and anchoring method |
| CN112376802A (en) * | 2020-11-18 | 2021-02-19 | 南通装配式建筑与智能结构研究院 | Composite anchorage device for FRP inhaul cable and mounting method |
| CN112376803A (en) * | 2020-11-18 | 2021-02-19 | 南通装配式建筑与智能结构研究院 | FRP (fiber reinforced plastic) steel strand composite rib anchorage device and anchoring method |
| 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 |
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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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180612 |