CN105970956A - Clamping piece type anchorage device for FRP rebar and method for conducting anchoring through clamping piece type anchorage device - Google Patents
Clamping piece type anchorage device for FRP rebar and method for conducting anchoring through clamping piece type anchorage device Download PDFInfo
- Publication number
- CN105970956A CN105970956A CN201610529415.7A CN201610529415A CN105970956A CN 105970956 A CN105970956 A CN 105970956A CN 201610529415 A CN201610529415 A CN 201610529415A CN 105970956 A CN105970956 A CN 105970956A
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- Prior art keywords
- anchor
- hole
- cylinder
- anchorage
- internal taper
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
Abstract
The invention relates to a clamping piece type anchorage device for an FRP rebar and a method for conducting anchoring through the clamping piece type anchorage device. The anchorage device comprises an anchorage cylinder. Inner conical holes extending in the center line of the anchorage cylinder are formed in the middle of the anchorage cylinder. A wedge-shaped clamping piece type structure matched with each inner conical hole in shape is arranged in the inner conical hole. A cylindrical center hole extending in the center line of each wedge-shaped clamping piece structure is formed in the middle of the wedge-shaped clamping piece structure. A metal conduit in a hollow cylinder shape is arranged in each center hole, and a wire is arranged in each metal conduit in a penetrating manner. One end of the anchorage cylinder is connected with an anchorage plate with cylindrical through holes in the middle in a matched manner, and the other end of the anchorage cylinder is provided with an inserting mechanism. A sealing cover is connected with the anchorage cylinder through the inserting mechanism. The center lines of the inner conical holes, the center lines of the center holes, the center lines of the through holes and the center lines of the wires are coincident. The axially-stressed wires penetrate the through holes and the inner conical holes and finally are fixed into the center holes in a penetrating manner. The clamping piece type anchorage device for the FRP rebar and the method for conducting anchoring through the clamping piece type anchorage device have the beneficial effects that safety and reliability are achieved, assembly is convenient, economy and practicability are achieved, and the clamping piece type anchorage device and the method are suitable for the high-performance fiber-reinforced polymer rebar.
Description
Technical field
The present invention relates to the clip type anchor for FRP muscle that a kind of ground anchorage, Spatial Cable net and structural fortification field are special
Have and use its anchoring process, particularly relate to a kind of high-performance fiber and strengthen the special termination anchor of composite (FRP) muscle
Solid strand tapered anchorage structural system, and use this kind for the anchoring process of the strand tapered anchorage of FRP muscle.
Background technology
High-performance fiber strengthens composite (FRP) and has the excellent properties such as high intensity, corrosion-resistant, underrelaxation, carbon in recent years
Fibre reinforced composites (CFRP), basalt fibre reinforcing composite material (BFRP) and aramid fiber strengthen composite
(AFRP) structural fortification, geotechnical anchor engineering, Spatial Cable net engineering and science of bridge building it have been applied to.Since oneth century
In geotechnical anchor engineering field, be there is fraud perishable, that durability is not enough as rock soil anchor by the reinforcing bar of muscle of advocating, steel strand wires
Sick.And utilize high-performance fiber to strengthen composite materials CFRP, BFRP, AFRP muscle and replace reinforcing bar, steel strand wires as rock
Soil anchor bolt is one of reliable approach solving above-mentioned technical barrier by muscle of advocating.
It is anisotropic material that high-performance fiber strengthens FRP Composite Material (including CFRP, BFRP, AFRP and GFRP),
The strength/rigidity significant difference of the parallel and vertical direction of its fiber, its shearing strength is about 1:20 with the ratio of tensile strength.If adopting
Easily cause FRP muscle to occur early fracture to destroy during end anchorage with conventional steel intermediate plate type anchorage, cause anchoring system overall
Lost efficacy.The early stage how to reduce the notch effect occurred because the stress of nearly load-bearing end concentrates, solving CFRP or BFRP muscle cuts
Disconnected destroying, the most domestic and international geotechnical anchor engineering circle is eager the technical bottleneck broken, and can one of its key problem in technology be that and become
Merit is developed for the Special ground tackle of CFRP, BFRP muscle.
At present, domestic and international civil engineering field is devoted to research and develop the anchoring being applicable to high-performance fiber enhancing composite material bar
System, safe and reliable especially for having of CFRP and BFRP muscle, size is less, easy for installation with economical and practical feature
Novel clamp flap-type anchorage, to promote novel high-performance fiber-reinforced composite material rib in ground anchorage, Spatial Cable net and structure
Application in reinforcing and ocean engineering field.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of safe and reliable, easy to assembly, economical and practical, and is applicable to high property
A kind of strand tapered anchorage for FRP muscle of energy fiber-reinforced composite material rib.
A kind of strand tapered anchorage for FRP muscle of the present invention, including anchor cylinder, offers in the middle part of described anchor cylinder and extends along its centrage
Internal taper hole, be placed with the wedge grip slice structure that profile is matched in described internal taper hole, in described wedge grip slice structure
Portion offers the cylindrical center hole extended along its centrage, is provided with the soft metal pillar of hollow cylindrical, institute in described centre bore
Be equipped with wire rod in stating soft metal pillar, one end of described anchor cylinder offer with middle part cylindric through hole anchor slab coincide connect, another
End is provided with plug-in connection, seals lid and is connected with described anchor cylinder by plug-in connection, described internal taper hole, centre bore, through hole, wire rod
Centrage overlap, the described wire rod of axial tension finally runs through after running through described through hole, internal taper hole and is fixed on described centre bore
Among.
A kind of strand tapered anchorage for FRP muscle of the present invention, the edge of the centre bore of the taper end of wherein said wedge grip slice structure
Place is provided with circular arc chamfering.
A kind of strand tapered anchorage for FRP muscle of the present invention, the tilt angle theta of wherein said wedge grip slice structure is more than described
The tilt angle alpha of internal taper hole.
A kind of strand tapered anchorage for FRP muscle of the present invention, wherein said anchor slab is sphere anchor slab or plane anchor slab, described anchor cylinder
Shape near the outer surface of anchor slab one end coordinates with described sphere anchor slab or plane anchor slab.
A kind of strand tapered anchorage for FRP muscle of the present invention, wherein said soft metal pillar uses aluminium foil, Copper Foil, lead foil or zinc
Any one in paper tinsel rolls and forms and inner wall surface is painted with epoxy quartz sand, the cross section of described soft metal pillar be annular or
Double semi-circular shape, and the axial length a of described soft metal pillar is more than the axial length L of described wedge grip slice structure and described
The axial length W of anchor cylinder.
A kind of strand tapered anchorage for FRP muscle of the present invention, wherein said wedge grip slice structure includes being separated from each other and middle part is right
Claiming to offer the upper clip of semi-circular recesses, lower clamping piece, described upper clip, the cross section of lower clamping piece be semicircle or rectangle and respectively
It is oblique line from the enveloping outer enclosure in vertical section, after the semi-circular recesses docking on described upper clip, lower clamping piece, forms described centre bore,
The Surface Machining of described semi-circular recesses has horizontal tooth stricture of vagina.
A kind of strand tapered anchorage for FRP muscle of the present invention, wherein said anchor cylinder is by least two pieces of separable anchor barrel member structures
The split-type structural become, each anchor barrel member of described split-type structural is fastenedly connected by fastening bolt, the phase of adjacent anchor barrel member
All offering groove on opposite, the docking of described groove forms internal taper hole, described anchor slab offers at least 1 through hole.
A kind of strand tapered anchorage for FRP muscle of the present invention, wherein said anchor cylinder is the integral type with circle or rectangular cross section
Structure, described anchor cylinder is provided with at least 1 internal taper hole, described anchor slab offers at least 1 through hole.
Present invention also offers a kind of anchoring process, comprise the steps:
A, described anchor slab is penetrated from the tail end of described wire rod, fixing with the surface of anchoring structure be connected；
B, described anchor cylinder is penetrated from the tail end of described wire rod, and make one end of anchor cylinder contact with anchor slab face and closely cooperate；
C, it is that described wire rod is set with described soft metal pillar at anchorage zone；
D, the interior wedge grip slice structure being clamped with soft metal pillar and wire rod is pushed in the internal taper hole of anchor cylinder；
E, the stretch-draw angle of wire rod is adjusted, until by the axis centering of the axis of far-end wire rod Yu anchor cylinder by adjusting anchor slab；
F, the tail end of the wedge grip slice structure being in anchor cylinder is applied pretightning force, it is achieved wedge grip slice structure and anchor cylinder it
Between pretension；
G, to wire rod by design requirements applying axial prestress, be then locked in internal taper hole by wedge grip slice structure, complete
Become the grappling of the strand tapered anchorage for FRP muscle and anchor structure system；
H, the tail end of wire rod of cutting additional length, and by plug-in connection by described seal to cover be connected with the tail end of anchor cylinder.
Present invention also offers another kind of anchoring process, comprise the steps:
1. application jumbolter presses design attitude, absolute altitude and angle injection anchor hole in the inner side foundation ditch of built steel sheet pile barricade；
2. 2 wire rods with centralizer and Grouting Pipe are put into the design attitude in anchor hole；
3. open grouting pump, cement mortar is poured into bottom anchor hole from the bottom of Grouting Pipe, until cement mortar overflows from anchor hole；
4. the anchor slab offering two through holes is passed from the tail end of 2 wire rods, and anchor slab is welded to double I-steel breast beam structure
On；
5. the anchor cylinder tail end through 2 described wire rods of two internal taper holes will be offered；
6. two wedge grip slice structures are pushed in two internal taper holes respectively, and make the outside wall surface of described wedge grip slice structure with
The internal face of described integral type anchor cylinder 3 is in close contact；
7. to 2 wire rods applying axial prestress to design load, then utilize in the intermediate plate lock anchor cylinder of wedge grip slice structure
2 wire rods, complete the anchoring work of the strand tapered anchorage for FRP muscle and anchor structure system；
8. the tail end of the additional length of 2 wire rods of cutting, completes anchoring construction.
Present invention also offers another anchoring process, comprise the steps:
(1) the vertical injection in the design anchor position anchor hole expanding body anti-float anchor rod on deep basal pit sole plate, and carry out bottom reaming, profit
With High-pressure Spiral Spray Technology with the soil body in cement mortar displacement anchor hole；
(2) 4 wire rods that Grouting Pipe are overlapped with pressure-bearing type mechanism, centralizer and 2 in bottom are put into the design attitude in anchor hole；
(3) open grouting pump, cement mortar is injected anchor hole bottom, till filling anchor hole by the 1st set Grouting Pipe；
(4) after 1 day, utilize the 2nd set Grouting Pipe to carry out the secondary cleavage fracture stress slip casting of cement slurry；
(5) the plane anchor slab being provided with 4 through holes is each passed through 4 wire rods, by described with the anchor cylinder being provided with 4 internal taper holes
Plane anchor slab is placed in sole plate plane, then is placed on described plane anchor slab by anchor cylinder；
(6), after 4 wire rods insert in 4 internal taper holes respectively, 4 set intermediate plates of 4 wedge grip slice structures are pushed 4 respectively
In individual internal taper hole；
(7) utilize tensioning equipment to 4 wire rods applying axial prestress to design load, and lock 4 lines one by one by 4 set intermediate plates
Material, completes the grappling of the strand tapered anchorage for FRP muscle and anchor structure system；
(8) utilize to seal and cover the tail end sealing of anchor cylinder, complete anchoring construction.
In sum, compared with prior art, the anchorage of the present invention and use its anchoring process at least to have the advantages that
By use wedge grip slice structure, split type carry with integral type anchor cylinder, soft metal pillar is protected, sphere anchor slab
Adjustable angle, the increasing of segmentation sputtered quartz sand is drawn to rub technology, and the differentiation skill at anchor cylinder and wedge grip slice structure angle of inclination
Art, optimizes the distribution of the compressive stress in anchorage zone, enables the compressive stress acting on the wire rods such as CFRP, BFRP muscle in anchoring
Relatively evenly it is distributed along wire rod axis in region, effectively reduces the stress that the wire rods such as CFRP, BFRP muscle bear at loading end
Peak value, thus the early fracture avoiding the wire rods such as CFRP, BFRP muscle caused due to notch effect or bending damage destroys and
The global failure of anchoring system.Visible, compared with existing anchorage, the strand tapered anchorage for FRP muscle of the present invention has safety
Reliably, chucking power is big, volume is little, length is short, dry operation, easily assembling, carrying are fast and the outstanding advantage such as reusable, the suitableeest
For engineering fields such as ground anchorage, Spatial Cable net and structural strengthenings.
Below in conjunction with the accompanying drawings to a kind of strand tapered anchorage for FRP muscle of the present invention and use its anchoring process to make furtherly
Bright.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of a kind of strand tapered anchorage embodiment one for FRP muscle of the present invention；
Fig. 2 is the plan structure schematic diagram of a kind of strand tapered anchorage embodiment one for FRP muscle of the present invention；
Fig. 3 is the sectional view of the Section A-A of Fig. 1；
Fig. 4 is the sectional view of the section B-B of Fig. 2；
Fig. 5 is the partial enlarged drawing at G position in Fig. 1；
Fig. 6 a is a kind of transverse cross-sectional view of one end of anchor cylinder in the strand tapered anchorage embodiment one of FRP muscle of the present invention；
Fig. 6 b is a kind of transverse cross-sectional view of the other end of anchor cylinder in the strand tapered anchorage embodiment one of FRP muscle of the present invention；
Fig. 7 is the stereochemical structure signal of the wedge grip slice structure of a kind of strand tapered anchorage embodiment one for FRP muscle of the present invention
Figure；
Fig. 8 a is the solid of a kind of form of the soft metal pillar of a kind of strand tapered anchorage embodiment one for FRP muscle of the present invention
Structural representation；
Fig. 8 b is the another form of vertical of the soft metal pillar of a kind of strand tapered anchorage embodiment one for FRP muscle of the present invention
Body structural representation；
Fig. 9 is the structural front view of a kind of strand tapered anchorage embodiment two for FRP muscle of the present invention；
Figure 10 a is the sectional view in the C-C cross section of Fig. 9；
Figure 10 b is the sectional view in the D-D cross section of Fig. 9；
Figure 11 is that a kind of stereochemical structure for the wedge grip slice structure of the strand tapered anchorage embodiment two of FRP muscle of the present invention is shown
It is intended to；
Figure 12 is the structural front view of a kind of strand tapered anchorage embodiment three for FRP muscle of the present invention；
Figure 13 is the structure top view of a kind of strand tapered anchorage embodiment three for FRP muscle of the present invention；
Figure 14 a is the sectional view in the E-E cross section of Figure 12；
Figure 14 b is the sectional view in the F-F cross section of Figure 12；
Figure 15 a is the sectional view in the E-E cross section of a kind of distressed structure of Figure 12；
Figure 15 b is the sectional view in the F-F cross section of a kind of distressed structure of Figure 12；
Figure 16 a is a kind of Construction State of step a in the anchoring process of the strand tapered anchorage embodiment three of FRP muscle of the present invention
Front view；
Figure 16 b is a kind of Construction State of step b in the anchoring process of the strand tapered anchorage embodiment three of FRP muscle of the present invention
Front view；
Figure 16 c is a kind of Construction State of step c in the anchoring process of the strand tapered anchorage embodiment three of FRP muscle of the present invention
Front view；
Figure 16 d is a kind of Construction State of step d in the anchoring process of the strand tapered anchorage embodiment three of FRP muscle of the present invention
Front view；
Figure 16 e is a kind of Construction State of step e in the anchoring process of the strand tapered anchorage embodiment three of FRP muscle of the present invention
Front view；
Figure 16 f is a kind of Construction State of step f in the anchoring process of the strand tapered anchorage embodiment three of FRP muscle of the present invention
Front view；
Figure 17 a is the use state front view of a kind of strand tapered anchorage embodiment four for FRP muscle of the present invention；
Figure 17 b is the partial enlarged drawing in Figure 17 a at H；
Figure 18 a is the use state front view of a kind of strand tapered anchorage embodiment five for FRP muscle of the present invention；
Figure 18 b is the partial enlarged drawing in Figure 18 a at K.
Detailed description of the invention
Embodiment one:
As shown in Fig. 1 to Fig. 8 a, the anchorage of the present invention includes the anchor barrel member of the two pieces of separation made by high intensity GFRP material
13, two pieces of supporting 8 fastening bolts of anchor barrel member 13 constitute the anchor cylinder 3 of split-type structural.Two pieces of anchor barrel members 13 relative
All offer the groove extended along respective centrage on face, after groove docking, form internal taper hole 8, the geometric shape of this internal taper hole 8
Internal taper hole for pre-small post-large variable cross-section.The wedge grip slice structure 1 that profile is matched it is placed with in internal taper hole 8.For strengthening
Anchoring effect, the tilt angle theta of wedge grip slice structure 1 is more than the tilt angle alpha of internal taper hole 8, and both angles can be 1 °
To 9 °, both differential seat angles are 0.1 ° to 0.3 °.Concrete, the tilt angle theta of wedge grip slice structure 1 is 3.1 °, inner cone
The tilt angle alpha in hole 8 is 3 °, and both differential seat angles are 0.1 °.
The middle part of wedge grip slice structure 1 offers the cylindrical center hole 9 extended along its centrage.Wedge grip slice structure 1
Including being separated from each other and middle part symmetry offers the upper clip 101 of semi-circular recesses 11, lower clamping piece 102, upper clip 101, under
The cross section of intermediate plate 102 is that semicircle and each vertical section enveloping outer enclosure is oblique line.Upper clip 101, lower clamping piece 102 are spelled
Elongated important actor structure is formed after connecing.Centre bore 9 is formed after semi-circular recesses 11 docking on upper clip 101, lower clamping piece 102.
The Surface Machining of semi-circular recesses 11 has horizontal tooth stricture of vagina, it is simple to increases the frictional force between wire rod 2, improves clamping effect.
For protection wire rod 2, it is provided with the soft metal pillar 4 of hollow cylindrical in centre bore 9, in soft metal pillar 4, is equipped with wire rod
2, this wire rod 2 is the CFRP muscle of a diameter of 16mm.The light circular surfaces even application of the CFRP muscle in the range of anchorage length
There are 120 mesh epoxy quartz sands.In the range of anchorage length, quartz sand can be carried out on CFRP or BFRP muscle surface and uniformly spray
Painting processes, it would however also be possible to employ carries out low-density quartz sand spraying in the subrange of front end, and carries out highly dense in the range of the major part of rear portion
Degree quartz sand spray treatment.Soft metal pillar 4 uses Copper Foil to roll and forms, and thickness is 0.2mm to 1.2mm, the present embodiment
Thickness is 0.3mm, and inner wall surface is painted with epoxy quartz sand, and the cross section of soft metal pillar 4 is annular or double semi-circular shape,
And its axial length a is more than axial length L and the axial length W of anchor cylinder 3 of wedge grip slice structure 1.
In anchorage zone, after CFRP muscle suit soft metal pillar 4, by the upper clip 101 of wedge grip slice structure 1, lower folder
Sheet 102 is put in internal taper hole 8 position of split type anchor cylinder 3, then by stitched together for two pieces of separable anchor barrel members 13, and
Locked under incremental twisting force from front to back by 8 fastening bolts, make outside wall surface and the split of wedge grip slice structure 1
The internal face of formula anchor cylinder 3 is in close contact.The left end of anchor cylinder 3 is provided with plug-in connection, seals lid 6 by plug-in connection and anchor cylinder 3
Connect.Anchor slab 5, sealing lid 6 lay respectively at the taper end of wedge grip slice structure 1, butt end.Internal taper hole 8, centre bore 9, logical
Hole 7, the centrage of wire rod 2 overlap, and the wire rod 2 of axial tension finally runs through after running through through hole 7, internal taper hole 8 and is fixed on circle
Among cylindrical central hole 9.After completing tensioning fixation work by design requirement, insert seal cap in the rear end of split type anchor cylinder 3
6。
One end of anchor cylinder 3 is offered the anchor slab 5 of cylindric through hole 7 and is coincide and connect with middle part.The front end of the anchor cylinder 3 of split-type structural
I.e. right-hand member is designed as outer convex spherical, and anchor slab 5 is concave spherical surface in square and band, is closely cooperated with outer convex spherical by interior concave spherical surface
Adjust with rotating, it is achieved the axis of far-end CFRP muscle and the axis centering of anchor cylinder 3, it is ensured that anchoring effect.
Preferably, for avoiding centre bore 9 edge wire rod 2 to be caused cutting damage, in the taper end of wedge grip slice structure 1
The edge of central hole 9 is provided with circular arc chamfering 12.
Embodiment two:
As shown in Figures 9 to 11, the present embodiment is with the difference of embodiment one, three pieces of steel separable anchor barrel members
13 pass through to constitute after fastening bolt fastens under incremental twisting force from front to back the anchor cylinder 3 of split-type structural.Put in anchor cylinder 3
It is equipped with 2 wedge grip slice structures 1.Anchor slab 5 is plane anchor slab, and anchor cylinder 3 right-hand member outer surface is also plane.Wire rod 2 is 2
Root has a BFRP muscle of shallow embossing, a diameter of 18mm and have epoxy quartz sand at anchoring section surface mount.Upper clip 101,
The cross section of lower clamping piece 102 is rectangle.Form, after the splicing of upper clip 101, lower clamping piece 102, the elongated prism that thick one end, one end is thin
Structure.2 BFRP muscle of axial tension run through plane anchor slab, anchor cylinder 3, are finally positioned over the 2 of wedge grip slice structure 1
In individual centre bore 9.The tilt angle theta of wedge grip slice structure 1 is 2.8 °, and the tilt angle alpha of internal taper hole 8 is 2.6 °, two
The differential seat angle of person is 0.2 °.Soft metal pillar 4 uses aluminium foil to make, and thickness is 0.4mm.
After 2 BFRP muscle suit soft metal pillars 4 in anchorage zone, by 4 folders of 2 wedge grip slice structures 1
Sheet pushes in 2 internal taper holes 8 of anchor cylinder 3, and makes the outside wall surface of wedge grip slice structure 1 closely connect with the internal face of anchor cylinder 3
Touch.Jack and moveable anchor is used 2 circular BFRP muscle to be applied the axial prestress of 100KN, after stretch-draw, by by wedge
4 intermediate plates of clevis slice structure 1 are locked in 2 internal taper holes 8 of anchor cylinder, complete for FRP muscle strand tapered anchorage with
The grappling of anchor structure system.
Embodiment three:
As shown in Figure 12 to Figure 14 b, the present embodiment is with the difference of embodiment two, and anchor cylinder 3 is integral type structure and cross section
For circle.The quantity of wedge grip slice structure 1 is 1.Wire rod 2 adds rib, a diameter of 20mm for CFRP.Soft metal
Pillar 4 uses zinc paper tinsel to make, and thickness is 0.3mm.Upper clip 101, the cross section of lower clamping piece 102 are semicircle.Wedge grip
The tilt angle theta of slice structure 1, the tilt angle alpha of internal taper hole 8 can be 2 ° to 10 °, the wedge grip chip knot of the present embodiment
The tilt angle theta of structure 1 is 2.6 °, and the tilt angle alpha of internal taper hole 8 is 2.5 °, and both differential seat angles are 0.1 °.
After CFRP muscle suit zinc paper tinsel pillar 4 in anchorage zone, the intermediate plate of wedge grip slice structure 1 is pushed integral type anchor
In the internal taper hole 8 of cylinder 3, and the outside wall surface of wedge grip slice structure 1 is made to be in close contact with the internal face of integral type anchor cylinder 3.Profit
With jack and moveable anchor, CFRP muscle is applied the axial prestress of 160KN, after stretch-draw completes, CFRP muscle is passed through wedge shape
2 intermediate plates of clip type structure are locked in the internal taper hole 8 of integral type anchor cylinder 3, i.e. will be used for FRP muscle by plane anchor slab
Strand tapered anchorage and anchor structure system grappling.
As shown in Figure 15 a, 15b, for a kind of distressed structure of the present embodiment, this distressed structure exists with the difference of the present embodiment
In, the cross section of anchor cylinder 3 is rectangle.Upper clip 101, the cross section of lower clamping piece 102 are also rectangle.
As shown in Figure 16 a to Figure 16 f, use the anchoring process of the anchorage of the present embodiment, comprise the steps:
A. plane anchor slab is penetrated from the tail end of CFRP muscle, and fixing with the surface of anchoring structure be connected；
B. integral type anchor cylinder 3 is penetrated from the tail end of CFRP muscle, and by the front plan of integral type anchor cylinder 3 and plane anchor slab
Plate face close-fitting contact；
C. it is that CFRP muscle is set with zinc paper tinsel pillar 4 at anchorage zone, and 2 intermediate plates of wedge grip slice structure 1 is seated in suit
Have around the CFRP muscle of zinc paper tinsel pillar 4；
D. 2 intermediate plates of the interior wedge grip slice structure 1 being clamped with zinc paper tinsel pillar 4 and CFRP muscle are pushed integral type anchor cylinder 3
Internal taper hole 8 in；
E. use jack and moveable anchor that CFRP muscle is applied axial prestress, then by wedge grip slice structure 1 by design requirement
2 intermediate plates be locked in the internal taper hole 8 of integral type anchor cylinder 3, complete the strand tapered anchorage for FRP muscle and anchor structure
System anchoring work；
F. cut the tail end of the CFRP muscle of additional length, utilize and seal lid 6 by close for the tail end being used for the strand tapered anchorage of FRP muscle
Envelope.
Embodiment four:
As shown in Figure 17 a, Figure 17 b, the present embodiment is for the outer anchor head of tension type BFRP muscle soil bolt of deep foundation pit supporting structure
Grappling.The present embodiment is with the difference of embodiment three, and wire rod 2 is long 24m, the 2 root surface ribbings of a diameter of 18mm
BFRP muscle.
Use the anchoring process of the anchorage of the present embodiment, i.e. tension type BFRP muscle soil bolt construction procedure is as follows:
1. application jumbolter press in the inner side foundation ditch of built steel sheet pile barricade design attitude, absolute altitude and the long 23m of angle injection,
The anchor hole of a diameter of 140mm；
2. 2 BFRP muscle with centralizer and Grouting Pipe are put into the design attitude in anchor hole；
3. open grouting pump, with the grouting pressure of 0.5MPa, the cement mortar that the ratio of mud is 0.48 is poured into anchor from the bottom of Grouting Pipe
Until cement mortar overflows from anchor hole bottom hole；
4. the plane anchor slab with 2 through holes 7 is passed from the tail end of 2 BFRP muscle, ensureing plane anchor slab and construction anchor
Under the perpendicular condition of hole, plane anchor slab is welded on double I-steel breast beam structure；
5. the integral type anchor cylinder 3 with 2 internal taper holes 8 is passed the tail end of 2 BFRP muscle；
6. 2 wedge grip slice structures 1 are pushed in 2 internal taper holes 8 of integral type anchor cylinder 3, and make wedge grip slice structure
The outside wall surface of 1 is in close contact with the internal face of integral type anchor cylinder 3；
7. use jack and moveable anchor to 2 BFRP muscle applying axial prestress to design load, then utilize wedge grip chip
2 BFRP muscle in the intermediate plate locking integral type anchor cylinder 3 of structure 1, complete the strand tapered anchorage for FRP muscle and anchoring knot
The anchoring work of structure system；
8. the tail end of the additional length of cutting BFRP muscle, utilizes sealing lid 6 by the tail end sealing of anchor cylinder 3, completes single pulling force
The construction of type BFRP muscle soil bolt.
Embodiment five:
As shown in Figure 18 a, Figure 18 b, the anchorage of the present embodiment expands the termination grappling of body anti-float anchor rod for the CFRP of the underground space.
The present embodiment is with the difference of embodiment four, comprises 500 CFR P altogether and expands body anti-float anchor rod, every CFRP anchor pole
Including 1,4 aluminium foil pillars 4 of 4 wedge grip slice structures.Wherein, wire rod 2 is 4 CFRP muscle, integral type anchor cylinder 3
On be provided with 4 internal taper holes 8.4 through holes 7 it are provided with on plane anchor slab.Body anti-float anchor rod is expanded as pressure-type CFRP, its
4 the tension a length of 26m of main muscle, the ribbing CFRP muscle of a diameter of 16mm.
The anchorage anchoring process of the present embodiment, i.e. the construction procedure that CFRP expands body anti-float anchor rod is as follows:
(1) use tower rotation spray roofbolt rig, the long 25m of the vertical injection in design anchor position of the anti-float anchor rod on deep basal pit sole plate,
The anchor hole of a diameter of 160mm, and carry out bottom long 5m, the reaming of a diameter of 600mm with 30MPa churning pressure, utilize
High-pressure Spiral Spray Technology is with the soil body in cement mortar displacement anchor hole；
(2) 4 CFRP muscle that Grouting Pipe are overlapped with pressure-bearing type mechanism, centralizer and 2 in bottom are put into the design attitude in anchor hole；
(3) open grouting pump, with the grouting pressure of 1.0MPa, the cement mortar that the ratio of mud is 0.46 is injected by the 1st set Grouting Pipe
Anchor hole bottom, till filling anchor hole；
(4) after 1 day, utilize the 2nd set Grouting Pipe to carry out the secondary cleavage fracture stress slip casting of cement slurry；
(5) 4 hole plane anchor slabs and 4 hole integral type anchor cylinders 3 are each passed through 4 CFRP muscle, plane anchor slab is placed on the end, basis
On board plane, then 4 hole integral type anchor cylinders 3 are placed on plane anchor slab；
(6), after 4 CFRP muscle insert in 4 internal taper holes 8 of 4 hole integral type anchor cylinders 3 respectively, 4 set intermediate plates are pushed away respectively
Enter in 4 internal taper holes 8 of integral type anchor cylinder 3；
(7) utilize the tensioning equipment such as jack and moveable anchor to 4 CFRP muscle applying axial prestress to design load, and by 4
Set intermediate plate locks 4 CFRP muscle one by one, completes the sole plate of strand tapered anchorage and anchor structure system for FRP muscle
Grappling；
(8) utilize sealing lid 6 by the tail end sealing of integral type anchor cylinder 3, complete single pressure-type CFRP and expand executing of body anti-float anchor rod
Work.
In the various embodiments described above, wire rod 2 is that the high-performance fiber of smooth outer surface, embossing or ribbing strengthens composite CFRP
Or BFRP muscle, and wire rod 2 outer surface is locally sprayed quartz sand.The wire rod 2 of wedge grip slice structure 1 clamping, such as CFRP
Or BFRP muscle can be one or more, the diameter of CFRP or BFRP muscle is more than or equal to 6mm.Wedge grip slice structure 1
Length can be more than or less than integral type or the length of split type anchor cylinder 3.The angle of inclination of wedge grip slice structure 1 and anchor cylinder 3
Angle of inclination can be all 1 ° to 9 ° or 2 ° to 10 °.Certainly, all data listed in the present embodiment are only used for the present invention's
Technical scheme illustrates, and does not constitute limitation of the invention, and in concrete practice, above-mentioned data can adjust according to demand.
The split type anchor cylinder 3 of the present invention and the intermediate plate of wedge grip slice structure 1 can use steel or high-intensity fiber composite
BFRP is wound around injection or RPC reactive powder high performance concrete makes, it would however also be possible to employ steel or high-intensity fiber composite
GFRP is wound around injection or UHPC ultra-high performance concrete makes.
In a word, a kind of strand tapered anchorage for FRP muscle of the present invention and use its anchoring process, its object is to for ground
Anchoring, Spatial Cable net, structural strengthening and the needs in ocean engineering field, strengthen the termination anchor of composite material bar for high-performance fiber
Admittedly provide a kind of safe and reliable, strand tapered anchorage of Applied economy.The anchorage using the present invention can reduce the geometry of anchorage self
Size, reduces the notch effect of the small bore end stress concentration that anchorage produces, it is to avoid CFRP/BFRP muscle occurs in anchoring procedure
Cutting off destruction in early days causes anchoring system to lose efficacy.It addition, the anchorage assembling of the present invention is simple, can quick assembling, it is possible to use this
Plant strand tapered anchorage reliably to be anchored with anchor structure system by CFRP/BFRP muscle.
Embodiment described above is only to be described the preferred embodiment of the present invention, not carries out the scope of the present invention
Limiting, on the premise of designing spirit without departing from the present invention, technical scheme is made by those of ordinary skill in the art
Various deformation and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (11)
1. the strand tapered anchorage for FRP muscle, it is characterised in that: include that anchor cylinder (3), described anchor cylinder (3) middle part leave
It is provided with the internal taper hole (8) extended along its centrage, in described internal taper hole (8), is placed with the wedge grip chip knot that profile is matched
Structure (1), the middle part of described wedge grip slice structure (1) offers along the cylindrical center hole (9) that its centrage extends, described
It is provided with the soft metal pillar (4) of hollow cylindrical in centre bore (9), in described soft metal pillar (4), is equipped with wire rod (2),
One end of described anchor cylinder (3) offer with middle part cylindric through hole (7) anchor slab (5) coincide connect, the other end is provided with grafting machine
Structure, is sealed lid (6) and is connected with described anchor cylinder (3) by plug-in connection, described internal taper hole (8), centre bore (9), through hole
(7), the centrage of wire rod (2) overlap, the described wire rod (2) of axial tension runs through described through hole (7), internal taper hole (8)
The most finally run through and be fixed among described centre bore (9).
A kind of strand tapered anchorage for FRP muscle the most according to claim 1, it is characterised in that: described wedge shape intermediate plate
The edge of the centre bore (9) of the taper end of formula structure (1) is provided with circular arc chamfering (12).
A kind of strand tapered anchorage for FRP muscle the most according to claim 2, it is characterised in that: described wedge shape intermediate plate
The tilt angle theta of formula structure (1) is more than the tilt angle alpha of described internal taper hole (8).
A kind of strand tapered anchorage for FRP muscle the most according to claim 3, it is characterised in that: described anchor slab (5)
For sphere anchor slab or plane anchor slab, the shape of the outer surface of close anchor slab (5) one end of described anchor cylinder (3) and described sphere anchor slab
Or plane anchor slab coordinates.
A kind of strand tapered anchorage for FRP muscle the most according to claim 4, it is characterised in that: described soft metal is protected
Pipe (4) uses any one in aluminium foil, Copper Foil, lead foil or zinc paper tinsel to roll and forms and inner wall surface is painted with epoxy quartz sand, institute
The cross section stating soft metal pillar (4) is annular or double semi-circular shape, and the axial length a of described soft metal pillar (4)
Axial length L and the axial length W of described anchor cylinder (3) more than described wedge grip slice structure (1).
A kind of strand tapered anchorage for FRP muscle the most according to claim 5, it is characterised in that: described wedge shape intermediate plate
Formula structure (1) includes being separated from each other and middle part symmetry offers the upper clip (101) of semi-circular recesses (11), lower clamping piece (102),
Described upper clip (101), the cross section of lower clamping piece (102) are semicircle or the enveloping outer enclosure in rectangle and respective vertical section is tiltedly
Line, forms described centre bore (9) after semi-circular recesses (11) docking on described upper clip (101), lower clamping piece (102),
The Surface Machining of described semi-circular recesses (11) has horizontal tooth stricture of vagina.
A kind of strand tapered anchorage for FRP muscle the most according to any one of claim 1 to 6, it is characterised in that:
Described anchor cylinder (3) is the split-type structural being made up of at least two pieces of separable anchor barrel members (13), described split-type structural
Each anchor barrel member (13) is fastenedly connected by fastening bolt, and the opposite face of adjacent anchor barrel member (13) all offers groove,
The docking of described groove forms internal taper hole (8), and described anchor slab (5) offers at least 1 through hole (7).
A kind of strand tapered anchorage for FRP muscle the most according to any one of claim 1 to 6, it is characterised in that:
Described anchor cylinder (3) is the integral structure with circle or rectangular cross section, and described anchor cylinder (3) is provided with at least 1
Taper hole (8), described anchor slab (5) offers at least 1 through hole (7).
9. the anchoring process of the use a kind of strand tapered anchorage for FRP muscle according to any one of claim 1 to 6, its
It is characterised by: comprise the steps:
A, described anchor slab (5) is penetrated from the tail end of described wire rod (2), fixing with the surface of anchoring structure be connected；
B, described anchor cylinder (3) is penetrated from the tail end of described wire rod (2), and make one end and anchor slab (5) face of anchor cylinder (3)
Contact and closely cooperate；
C, it is that described wire rod (2) is set with described soft metal pillar (4) at anchorage zone；
D, the interior wedge grip slice structure (1) being clamped with soft metal pillar (4) and wire rod (2) is pushed anchor cylinder (3)
In internal taper hole (8)；
E, the stretch-draw angle of wire rod (2) is adjusted, until by the axis of far-end wire rod (2) by adjusting anchor slab (5)
Axis centering with anchor cylinder (3)；
F, the tail end of the wedge grip slice structure (1) being in anchor cylinder (3) is applied pretightning force, it is achieved wedge grip chip is tied
Pretension between structure (1) and anchor cylinder (3)；
G, to wire rod (2) by design requirements applying axial prestress, then by wedge grip slice structure (1) is locked in
In internal taper hole (8), complete the grappling of the strand tapered anchorage for FRP muscle and anchor structure system；
H, the tail end of wire rod (2) of cutting additional length, and seal lid (6) and anchor cylinder (3) by plug-in connection by described
Tail end be connected.
10. the anchoring process of the use a kind of strand tapered anchorage for FRP muscle described in claim 8, it is characterised in that: bag
Include following steps:
1. application jumbolter presses design attitude, absolute altitude and angle injection anchor hole in the inner side foundation ditch of built steel sheet pile barricade；
2. 2 wire rods (2) with centralizer and Grouting Pipe are put into the design attitude in anchor hole；
3. open grouting pump, cement mortar is poured into bottom anchor hole from the bottom of Grouting Pipe, until cement mortar overflows from anchor hole；
4. the anchor slab (5) offering two through holes (7) is passed from the tail end of 2 wire rods (2), and anchor slab (5) is welded
Receive on double I-steel breast beam structure；
5. the anchor cylinder (3) tail end through 2 described wire rods (2) of two internal taper holes (8) will be offered；
6. two wedge grip slice structures (1) are pushed in two internal taper holes (8) respectively, and make described wedge grip slice structure
(1) outside wall surface is in close contact with the internal face of described integral type anchor cylinder (3)；
7. to 2 wire rods (2) applying axial prestress to design load, the intermediate plate of wedge grip slice structure (1) is then utilized to lock
Determine 2 wire rods (2) in anchor cylinder (3), complete the anchoring work of the strand tapered anchorage for FRP muscle and anchor structure system；
8. the tail end of the additional length of 2 wire rods (2) of cutting, completes anchoring construction.
11. anchoring process using a kind of strand tapered anchorage for FRP muscle described in claim 8, it is characterised in that: bag
Include following steps:
(1) the vertical injection in the design anchor position anchor hole expanding body anti-float anchor rod on deep basal pit sole plate, and carry out bottom reaming, profit
With High-pressure Spiral Spray Technology with the soil body in cement mortar displacement anchor hole；
(2) 4 wire rods (2) that Grouting Pipe are overlapped with pressure-bearing type mechanism, centralizer and 2 in bottom are put into the design attitude in anchor hole；
(3) open grouting pump, cement mortar is injected anchor hole bottom, till filling anchor hole by the 1st set Grouting Pipe；
(4) after 1 day, utilize the 2nd set Grouting Pipe to carry out the secondary cleavage fracture stress slip casting of cement slurry；
(5) the plane anchor slab being provided with 4 through holes (7) is each passed through 4 with the anchor cylinder (3) being provided with 4 internal taper holes (8)
Root wire rod (2), is placed on described plane anchor slab in sole plate plane, then is placed on described plane anchor slab by anchor cylinder (3)；
(6) after 4 wire rods (2) are inserted in 4 internal taper holes (8) respectively, by 4 sets of 4 wedge grip slice structures (1)
Intermediate plate pushes in 4 internal taper holes (8) respectively；
(7) utilize tensioning equipment to 4 wire rods (2) applying axial prestress to design load, and lock 4 one by one by 4 set intermediate plates
Root wire rod (2), completes the grappling of the strand tapered anchorage for FRP muscle and anchor structure system；
(8) utilize sealing lid (6) by the tail end sealing of anchor cylinder (3), complete anchoring construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529415.7A CN105970956A (en) | 2016-07-06 | 2016-07-06 | Clamping piece type anchorage device for FRP rebar and method for conducting anchoring through clamping piece type anchorage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529415.7A CN105970956A (en) | 2016-07-06 | 2016-07-06 | Clamping piece type anchorage device for FRP rebar and method for conducting anchoring through clamping piece type anchorage device |
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|---|---|
| CN105970956A true CN105970956A (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610529415.7A Pending CN105970956A (en) | 2016-07-06 | 2016-07-06 | Clamping piece type anchorage device for FRP rebar and method for conducting anchoring through clamping piece type anchorage device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480882A (en) * | 2016-10-18 | 2017-03-08 | 东南大学 | Embedded steel ball FRP muscle internal cone type binding ground tackle and its implementation |
| CN109838038A (en) * | 2019-01-11 | 2019-06-04 | 东南大学 | A kind of prestressing force answers material muscle composite anchorage and its forming method |
| CN113802455A (en) * | 2021-08-31 | 2021-12-17 | 北京科技大学 | Anchor device for carbon fiber parallel inhaul cable and anchoring method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0232944B1 (en) * | 1986-02-14 | 1990-10-10 | Akzo N.V. | A device for anchoring a tendon and a process for preparing prestressed concrete |
| CN2573773Y (en) * | 2002-07-19 | 2003-09-17 | 东南大学 | Prestressed FRP reinforcement sheet fastening body device |
| CN101078285A (en) * | 2007-06-20 | 2007-11-28 | 湖南大学 | Clamping piece type anchorage used for multiple fiber reinforcement plastic bar or dragline |
| CN101967867A (en) * | 2010-10-27 | 2011-02-09 | 西南交通大学 | Universal clamping piece type anchor for carbon fiber reinforced plastic (CFRP) bars |
| CN202519884U (en) * | 2011-09-21 | 2012-11-07 | 江苏大学 | Composite anchor for FRP (fiber reinforce plastic) rib |
| CN103255878A (en) * | 2013-03-08 | 2013-08-21 | 宁波大学 | Novel elastic clamp-ring type anchorage device |
| CN105672578A (en) * | 2016-04-05 | 2016-06-15 | 中国京冶工程技术有限公司 | Tool anchorage for shearing bars of constructed unbounded prestressed concrete structure |
| CN205804345U (en) * | 2016-07-06 | 2016-12-14 | 中国京冶工程技术有限公司 | A kind of strand tapered anchorage for FRP muscle |
-
2016
- 2016-07-06 CN CN201610529415.7A patent/CN105970956A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0232944B1 (en) * | 1986-02-14 | 1990-10-10 | Akzo N.V. | A device for anchoring a tendon and a process for preparing prestressed concrete |
| CN2573773Y (en) * | 2002-07-19 | 2003-09-17 | 东南大学 | Prestressed FRP reinforcement sheet fastening body device |
| CN101078285A (en) * | 2007-06-20 | 2007-11-28 | 湖南大学 | Clamping piece type anchorage used for multiple fiber reinforcement plastic bar or dragline |
| CN101967867A (en) * | 2010-10-27 | 2011-02-09 | 西南交通大学 | Universal clamping piece type anchor for carbon fiber reinforced plastic (CFRP) bars |
| CN202519884U (en) * | 2011-09-21 | 2012-11-07 | 江苏大学 | Composite anchor for FRP (fiber reinforce plastic) rib |
| CN103255878A (en) * | 2013-03-08 | 2013-08-21 | 宁波大学 | Novel elastic clamp-ring type anchorage device |
| CN105672578A (en) * | 2016-04-05 | 2016-06-15 | 中国京冶工程技术有限公司 | Tool anchorage for shearing bars of constructed unbounded prestressed concrete structure |
| CN205804345U (en) * | 2016-07-06 | 2016-12-14 | 中国京冶工程技术有限公司 | A kind of strand tapered anchorage for FRP muscle |
Non-Patent Citations (2)
| Title |
|---|
| 冶金部建筑研究总院: "《土层锚杆设计与施工规范》", 6 November 1990 * |
| 金文成 等: "《纤维复合材料配筋混凝土结构》", 31 July 2014, 华中科技大学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480882A (en) * | 2016-10-18 | 2017-03-08 | 东南大学 | Embedded steel ball FRP muscle internal cone type binding ground tackle and its implementation |
| CN106480882B (en) * | 2016-10-18 | 2018-06-15 | 东南大学 | Embedded steel ball FRP tendons internal cone type binding ground tackle and its implementation |
| CN109838038A (en) * | 2019-01-11 | 2019-06-04 | 东南大学 | A kind of prestressing force answers material muscle composite anchorage and its forming method |
| CN109838038B (en) * | 2019-01-11 | 2023-12-01 | 东南大学 | Prestressed composite bar composite anchorage and forming method thereof |
| CN113802455A (en) * | 2021-08-31 | 2021-12-17 | 北京科技大学 | Anchor device for carbon fiber parallel inhaul cable and anchoring method thereof |
| CN113802455B (en) * | 2021-08-31 | 2022-06-28 | 北京科技大学 | Anchor device for carbon fiber parallel inhaul cable and anchoring method thereof |
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