CN104929117B - Construction method of concrete pole body composite anchor rod - Google Patents
Construction method of concrete pole body composite anchor rod Download PDFInfo
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- CN104929117B CN104929117B CN201510360640.8A CN201510360640A CN104929117B CN 104929117 B CN104929117 B CN 104929117B CN 201510360640 A CN201510360640 A CN 201510360640A CN 104929117 B CN104929117 B CN 104929117B
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- 239000004567 concrete Substances 0.000 title claims abstract description 77
- 239000002131 composite material Substances 0.000 title claims abstract description 50
- 238000010276 construction Methods 0.000 title claims abstract description 42
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 78
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 238000004873 anchoring Methods 0.000 claims abstract 2
- 210000003205 muscle Anatomy 0.000 claims description 68
- 229910000831 Steel Inorganic materials 0.000 claims description 55
- 239000010959 steel Substances 0.000 claims description 55
- 239000004568 cement Substances 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 239000011083 cement mortar Substances 0.000 claims description 9
- 239000000839 emulsion Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 235000014121 butter Nutrition 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000004049 embossing Methods 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 3
- 238000002513 implantation Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 3
- 239000011241 protective layer Substances 0.000 abstract description 2
- 210000002435 tendon Anatomy 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000007569 slipcasting Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007586 pull-out test Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The invention provides a concrete pole body composite anchor rod and a construction method thereof, wherein the concrete pole body composite anchor rod comprises a concrete pole body and an anchoring device which is arranged at the end part of the pole body and is used for being connected with a foundation, and a pole bone is arranged in the concrete pole body; the rod bone comprises a hollow rod bone tube and positioning guide devices which are fixed on the outer wall surface of the rod bone tube and are arranged at intervals along the extension direction; the rod bone tube is filled with grouting body; a rod rib is arranged in the grouting body; the central axes of the concrete pole body, the pole bone pipes and the pole ribs are all parallel. The construction of the concrete pole body is carried out by adopting the long spiral drilling and concrete pressure pouring process, so that the construction method has the advantages of no slurry pollution, stable construction quality, high construction speed, simple and convenient operation, high pulling resistance and bearing capacity and good cost performance; the rod-bone pipe not only is a framework of the composite anchor rod, but also is a protective layer of the rod tendon, so that the rod tendon can be protected from being corroded by corrosive media in a foundation, and the durability is strong; the settlement of the foundation can be adjusted by applying prestress to the post-tensioning of the composite anchor rod, and the differential deformation of the foundation is reduced.
Description
Technical field
The present invention relates to buildings or structures, municipal works, underground engineering and high-rise structure in a kind of construction project
Resisting buoyancy of foundation, resistance to plucking component, be specifically related to the construction method of a kind of concrete shaft Composite Bolt.
Background technology
Chinese Academy of Engineering Qian Qihu academician has a penetrating description to civil engineering: " 19th-century is century of bridge,
Twentieth century is the century in building, and 21st century is the century of the underground space." in recent years, the exploitation of the various underground spaces is built
If it is like a raging fire.When level of ground water is higher, the development & construction of the underground space are inevitably affected by subsoil water, wherein
How underground structure resists underground buoyancy of water is relatively common problem.Solve the measure master of underground structure anti-floating problem at present
There is release water buoyancy method, increase counterweight method and the resistance to plucking component such as uplift pile or anti-float anchor rod is set.Be provided with uplift pile or
The resistance to plucking components such as anti-float anchor rod, are to solve underground structure anti-floating problem most common method.It addition, be subject at some high-rise structures
During bigger horizontal loading, its basis there is also resistance to plucking problem, the most usually uses the resistance to plucking component such as uplift pile or anchor pole.Arrange anti-
The resistance to plucking component such as pile pulling or anti-float anchor rod, is to solve resisting buoyancy of foundation and foundation anti-pulling problem most common method.But, common anchor
There is low bearing capacity, high in cost of production defect in bar.And, common uplift pile and anti-float anchor rod in working order under, pile concrete
Or injecting cement paste is extended state, owing to concrete or injecting cement paste tensile strength are low, pile concrete or bolt grouting body during tension
Crack easily occur, the protective layer of steel bar stress is little in addition, and therefore the steel bar stress in resistance to plucking component can be corroded by subsoil water,
Gradually being corroded, tensile capacity reduces, and steel bar stress may be caused to be pulled off and make anti-floating component failure time serious.
At present, engineering circles solve such issues that typically start with from following several respects: first aspect, thus it is possible to vary uplift pile and
The stress of anti-float anchor rod, is made by prestressing technique the stress of stake or anchor pole be changed into pressurized by tension, effectively subtracts
The appearance in few crack, improves the service life of reinforcing bar；Second aspect, can carry out preservative treatment to reinforcing bar or increase protection is arranged
Execute, so can also improve the service life of reinforcing bar；The third aspect, increases uplift pile and the quantity of reinforcement of anchor pole, control critical eigenvalue width
Degree, but this method reinforced steel bar strength is not in full use, and causes the significant wastage of steel.
The problem existed for the most conventional anchor pole and defect, need research and development one at present badly and be provided simultaneously with anti-pulling capacity
High, reinforced steel bar strength plays fully, good endurance, speed of application are fast, constructing operation is easy, it is wide to be suitable for stratum, can Shi Hanzhang
Novel anchor rod etc. advantage.
Summary of the invention
It is an object of the invention to provide the construction method of a kind of concrete shaft Composite Bolt, overcome existing common bolt to resist
Pull out low bearing capacity, reinforcing bar corrosion-vulnerable, there is the technical problem that mud contamination, overall price/performance ratio are relatively low.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of concrete shaft Composite Bolt, including concrete shaft be located at shaft end for the anchor being connected with basis
It is fixedly mounted with and puts, it is characterised in that: described concrete shaft is provided with the bar bone pipe of hollow；Concrete is stretched out in the upper end of described bar bone pipe
Outside shaft；Injecting cement paste is filled in described bar bone pipe；Described injecting cement paste is built-in with bar muscle；The top extension bar bone pipe of described bar muscle is also
It is connected with basis by anchor；Described concrete shaft, bar bone pipe are the most parallel with the axis of bar muscle.
As preferred technical scheme, the outside wall surface of described bar bone pipe is disposed with positioning and guiding dress along bearing of trend interval
Put.
Further, described locating guide device is made up of four identical and in cross arrangement curved muscle of shape,
Described curved muscle is bent into by reinforcing bar or steel band, and its upper and lower two ends are for being welded on the straight line in the outside wall surface of described bar bone pipe
Section, centre is circular arc or the fold-line-shaped of evagination.
As preferred technical scheme, in described concrete shaft, there is one or more bar bone pipe.
As preferred technical scheme, described bar bone pipe is common steel tube, coating steel pipe or plastic conduit, its lower port
Shrinking and form the tip closed, upper port opening, a diameter of DN15～DN150, pipe thickness is not less than 2.5mm.
As preferred technical scheme, described bar muscle is steel strand wires, steel wire, regular reinforcement or finish rolling deformed bar.
As preferred technical scheme, described bar muscle is steel strand wires and when need not Shi Hanzhang, described anchor
Use steel strand wires ball Anchorage System；Described bar muscle is steel strand wires and when needing Shi Hanzhang, and described anchor uses steel strand wires
Intermediate plate anchorage；Described bar muscle be steel wire, regular reinforcement or finish rolling deformed bar and not Shi Hanzhang time, described anchor is adopted
The bond-anchorage section being outwards bent to form with bar muscle end.
As preferred technical scheme, described injecting cement paste be the ratio of mud be the cement mortar of 0.4～0.7.
The present invention also provides for the preparation method of above-mentioned New Composite Bolt, it is characterised in that comprise the steps:
Step one, material prepare: on bar bone pipe, bar bone made by stationary positioned guider, when needing soap-free emulsion polymeization section,
Bar muscle epimere coating butter plastic pipe-covered form soap-free emulsion polymeization section；
Step 2, the making of concrete shaft: use long auger guncreting technique to construct, first with long
Twist bit hole, drilling diameter is 250mm～1000mm, then in hole pump plain concrete, concrete slump 180～
220mm, strength grade C20～C50；Limit promotes drilling rod limit pump concrete, pore-forming perfusion to accomplish without any letup, and shaft is along its length
Diameter be identical；
Step 3, implantation bar bone pipe: after concrete shaft has irrigated and before concrete initial set, artificial or utilization vibration
Bar bone is implanted shaft concrete and arrives precalculated position by device, and bar bone pipe is positioned at the center of concrete shaft, and one is combined
One or more bar bone implantable in bolthole；
Step 4, in bar bone pipe, add injecting cement paste: by Grouting Pipe insertion rod bone pipe, in pipe, fill injecting cement paste；
Step 5, by bar muscle insertion rod bone pipe: in bar bone pipe before injecting cement paste initial set, by bar muscle insertion rod bone pipe, slip casting
The ratio of mud of body is 0.4～0.7；
Step 6, maintenance and overall quality inspection: after concrete and cement mortar reach certain age, Composite Bolt is resisted
Pull out test；
Step 7, formation anchor: ball Anchorage System is to use special embossing machine that steel strand wires termination is pressed into pyriform；Intermediate plate
Anchorage directly uses domestic approved product；Bar muscle bond-anchorage section is passed through according to the diameter of bar muscle, intensity, base concrete intensity
Calculating determines.
Wherein, during construction, the order of described step 4 and step 5 can overturn, first by bar muscle insertion rod bone pipe, simultaneously
Insert Grouting Pipe, then in bar bone pipe, add injecting cement paste, finally extract Grouting Pipe or do not extract.
Compared with prior art, the invention have the characteristics that and beneficial effect:
1, the anti-pulling capacity of Composite Bolt of the present invention is much higher than isometric common bolt, and cost performance is better than common anchor
Bar；
2, the skeleton of Composite Bolt is not only by bar bone pipe, and is the overcoat of bar muscle, can guard bar muscle not by ground
Corrosive medium corrosion, it is ensured that the durability in its service life meets requirement；
3, Composite Bolt of the present invention uses long auger guncreting construction technology, mud-less pollution, construction quality
Stably, speed of application is fast, easy and simple to handle；
4, the present invention can be by Composite Bolt post-stretching Shi Hanzhang, the sedimentation on regulation basis, reducing the difference on basis
Mutation shape.
Effect below by an experimental project embodiment explanation present invention.
Certain experimental project, the resistance to plucking component of former technical scheme is common bolt, and bolt design parameters, cost are as follows:
Anchor pole aperture 200mm, length 8.2m, steel bar stress 318(HRB400 reinforcing bar), the overcoat of reinforcing bar is 60mm's
Mortar, single anchor rod anti-pulling capacity eigenvalue 110kN, construction costs 94.6 ten thousand yuan, anti-pulling capacity summation and construction costs
Ratio (cost performance) be 0.13kN/ unit.1 roof-bolter construction is estimated to complete for 40 days.
The technical scheme of this engineering was revised as the Composite Bolt scheme of the present invention later, and Composite Bolt parameter, cost are as follows:
Anchor pole aperture 400mm, length 11.7m, steel bar stress 415.2(1860MPa level steel strand wires), the overcoat of reinforcing bar
For steel pipe and the concrete of more than thickness 150mm of wall thickness 3mm, single Composite Bolt anti-pulling capacity eigenvalue 440kN, engineering
Cost 59.04 ten thousand yuan, anti-pulling capacity summation is 0.177 kN/ unit with the ratio (cost performance) of construction costs.1 director's auger
Machine is constructed, 15 days actual used times.
Can be seen that from this experimental project embodiment, the Composite Bolt of the present invention has tripartite than common bolt, beneficial effect
Face:
First, save resistance to plucking component construction costs 37.6%, cost performance improves 36%；
Second, save the construction period 62.5%；
3rd, the antiseptic property of steel bar stress, not only the thickness of concrete (or mortar) overcoat of reinforcing bar increases
150%, more effectively, overcoat adds one layer of steel pipe.
Accompanying drawing explanation
Fig. 1 be embodiment 1 anchor that the present invention relates to be that the structure of Composite Bolt during steel strand wires ball Anchorage System 7 is shown
It is intended to；
Fig. 2 be embodiment 2 anchor that the present invention relates to be that the structure of Composite Bolt during steel strand wires intermediate plate anchorage 8 is shown
It is intended to；
Fig. 3 is the structural representation that embodiment 3 anchor is Composite Bolt during bond-anchorage section 9 that the present invention relates to
Figure.
Fig. 4 is the cross-sectional structure schematic diagram of Composite Bolt of the present invention.
Reference: 1-concrete shaft, 2-bar bone pipe, 3-injecting cement paste, 4-bar muscle, 5-locating guide device, 6-basis,
7-steel strand wires ball Anchorage System, 8-steel strand wires intermediate plate anchorage, 9-bond-anchorage section.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
Non-for limiting the scope of the present invention.
A kind of concrete shaft Composite Bolt, the shaft of Composite Bolt is positioned at ground, Composite Bolt upper end with build
(structure) is built the basis 6 of thing and is connected, and Composite Bolt the most of the present invention includes following components: use long screw auger pore pressure
Fill the concrete shaft 1 of concrete making technology construction, be in the bar bone in the middle part of shaft, be positioned at the cement mortar induration 3 of bar bone pipe 2
With bar muscle 4, and with the anchors that are connected of basis 6.Concrete shaft outer 100～500mm, bar are stretched out in the top of bar bone pipe 2
The length of bone pipe 2 is than concrete shaft 1 length big 100～500mm, and at least 500mm is stretched out from bar bone pipe 2 again in the top of bar muscle 4,
Bar muscle 4 is at least than the long 500mm of bar bone pipe 2.Fig. 4 is the cross-sectional structure schematic diagram of Composite Bolt of the present invention.
Wherein, concrete shaft 1 uses long auger guncreting construction technology to be formed, and during construction, drilling rod is promoted on limit
Limit pump concrete, by once, drilling diameter is 250mm～1000mm, and shaft diameter along its length is in pore-forming perfusion
Identical；Bar muscle 4 total length is had to the Composite Bolt of bonding, shaft concrete entire body tension；It is soap-free emulsion polymeization for bar muscle top
Section Composite Bolt, shaft concrete with bar muscle with or without being bonded as boundary, bottom concrete in tension, top concrete compression.
Bar bone is made up of bar bone pipe 2 and the locating guide device 5 of hollow, and locating guide device 5 is fixed on outside bar bone pipe 2
Being spaced setting on wall along its length, described locating guide device 5 is identical by four shapes and in cross arrangement
Curved muscle forms, and described curved muscle is bent into by reinforcing bar or steel band, and its upper and lower two ends are the outer wall for being welded on described bar bone pipe 2
Straightway on face, centre is circular arc or the fold-line-shaped of evagination, and four curved muscle are positioned on sustained height；Described bar bone pipe 2 is
Common steel tube, coating steel pipe or plastic conduit, the tip that the contraction formation of its lower port is closed, upper port opening, a diameter of
DN15～DN150, pipe thickness is not less than 2.5mm.According to steel pipe, steel pipe diameter along its length, wall thickness can be phases
With, can also be change.Bar bone implants shaft after concrete shaft 1 has irrigated and before concrete initial set.Bar bone
Pipe 2 is located substantially at shaft center, one or more bar bone pipe 2 implantable in a compound anchor rod aperture.
The cement mortar induration 3 and the bar muscle 4 that are positioned at bar bone pipe 2 are characterised by, it can be by steel strand wires or steel wire or essence
Steel rolling muscle or regular reinforcement make.Bar muscle 4 bottom is for there being adhesive section, and top is soap-free emulsion polymeization section, it is possible to total length is for there being adhesive section.When
When needing Shi Hanzhang, bar muscle 4 must set the soap-free emulsion polymeization section no less than 5m；The soap-free emulsion polymeization section of bar muscle 4 uses and smears on bar muscle
The outer plastic pipe-covered of butter is formed.The sequence of construction of cement mortar induration 3 and bar muscle 4 has two kinds.One is: note in bar bone pipe 2
Slurry → by bar muscle 4 insertion rod bone pipe 2.Another kind is: be inserted into bar muscle 4 and Grouting Pipe → slip casting → extract slip casting to bar bone pipe 2
Manage or do not extract.
The anchor being connected with basis is characterised by: when bar muscle 4 is for steel strand wires, bar muscle 4 and construction of structures basis
It is connected by steel strand wires intermediate plate anchorage 8 or steel strand wires ball Anchorage System 7；When need to Shi Hanzhang on the basis of construction of structures time, bar
Muscle and basis are connected by steel strand wires intermediate plate anchorage 8；When not Shi Hanzhang, bar muscle and basis are connected by steel strand wires embossing
Anchorage 7；Bar muscle 4 is finish rolling reinforcing bar, regular reinforcement or steel wire and not Shi Hanzhang time, bar muscle and basis are connected by the anchor that bonds
Gu section 9 anchors.Fig. 1 is the structure that embodiment 1 anchor is Composite Bolt during steel strand wires ball Anchorage System 7 that the present invention relates to
Schematic diagram；Fig. 2 be embodiment 2 anchor that the present invention relates to be that the structure of Composite Bolt during steel strand wires intermediate plate anchorage 8 is shown
It is intended to；Fig. 3 is the structural representation that embodiment 3 anchor is Composite Bolt during bond-anchorage section 9 that the present invention relates to.
The construction method of above-described concrete shaft Composite Bolt, step is as follows:
Step 1, processing and fabricating Composite Bolt bar bone pipe 2, bar muscle 4.
Step 2, hole with long-spiral drilling machine；
Step 3, in hole pump plain concrete, concrete slump 180～220mm, strength grade C20～C50；
Before step 4, and concrete initial set complete in shaft concreting, above-mentioned bar bone pipe 2 is sling, is placed in shaft
On；
Step 5, use artificial or vibrator, bar bone pipe 2 is implanted concrete shaft 1 and arrived precalculated position.According to need
Want, one or more bar bone pipe implantable in a compound anchor rod aperture.
Step 6, this step have two kinds of methods: method one, by Grouting Pipe insertion rod bone pipe, then fill cement in pipe
Slurry, finally in pipe before cement mortar initial set, by bar muscle 4 insertion rod bone pipe 2；Method two, by bar muscle 4 and Grouting Pipe insertion rod bone pipe
In 2, then slip casting, finally extract Grouting Pipe or do not extract.The ratio of mud of cement mortar is 0.4～0.7.
During use, for needing the Composite Bolt of Shi Hanzhang, during construction of structures foundation construction, by bar muscle 4 through base
Plinth 6, at basis end face or basic internal, tension rod muscle 4, and uses intermediate plate anchorage 8 to anchor, it is achieved bar muscle 4 and the company on basis 6
Connect.For need not the Composite Bolt of Shi Hanzhang, the end of bar muscle 4 is reserved anchorage length 9, to steel strand wires bar muscle, also
Can be compressed to ball Anchorage System 7, during construction of structures foundation construction, bar muscle 4 anchors into construction of structures basis, it is achieved Composite Bolt and basis
The connection of 6.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. a construction method for concrete shaft Composite Bolt, described concrete shaft Composite Bolt includes concrete shaft
(1) and be located at shaft end for basis (6) anchor that is connected, it is characterised in that described concrete shaft (1) is inserted
There is bar bone pipe (2) of hollow；Concrete shaft (1) is stretched out outward in the upper end of described bar bone pipe (2)；Fill in described bar bone pipe (2)
Injecting cement paste (3)；Described injecting cement paste (3) is built-in with bar muscle (4)；Top extension bar bone pipe (2) of described bar muscle (4) by anchoring
Device is connected with basis (6)；Described concrete shaft (1), bar bone pipe (2) and the axis parallel of bar muscle (4)；
The construction method of concrete shaft Composite Bolt comprises the steps:
Step one, material prepare: make bar bone at the upper stationary positioned guider (5) of bar bone pipe (2), when needing soap-free emulsion polymeization section,
Soap-free emulsion polymeization section is formed at bar muscle (4) epimere coating butter plastic pipe-covered；
Step 2, the making of concrete shaft (1): use long auger guncreting technique to construct, first with long
Twist bit hole, drilling diameter is 250mm～1000mm, then in hole pump plain concrete, concrete slump 180～
220mm, strength grade C20～C50；Limit promotes drilling rod limit pump concrete, pore-forming perfusion to accomplish without any letup, and shaft is along its length
Diameter be identical；
Step 3, implantation bar bone pipe (2): after shaft filling concrete completes and before concrete initial set, artificial or utilization vibration
Bar bone is implanted concrete shaft (1) and arrives precalculated position by device, and bar bone pipe (2) is positioned at the center of concrete shaft (1),
One or more bar bone implantable in one compound anchor rod aperture；
Step 4, in bar bone pipe (2), add injecting cement paste (3): by Grouting Pipe insertion rod bone pipe (2), in pipe, fill injecting cement paste
(3)；
Step 5, by bar muscle (4) insertion rod bone pipe (2): in bar bone pipe (2) before injecting cement paste (3) initial set, by bar muscle (4) insert
Bar bone pipe (2), the ratio of mud of injecting cement paste (3) is 0.4～0.7；
Step 6, maintenance and overall quality inspection: after concrete and cement mortar reach certain age, Composite Bolt is carried out resistance to plucking examination
Test；
Step 7, formation anchor: ball Anchorage System (7) is to use special embossing machine that steel strand wires termination is pressed into pyriform；Intermediate plate
Anchorage (8) directly uses domestic approved product；Bar muscle bond-anchorage section (9) is strong according to the diameter of bar muscle, intensity, base concrete
Degree is determined by calculating.
The construction method of concrete shaft Composite Bolt the most according to claim 1, is characterized in that: described bar bone pipe (2)
Outside wall surface on, along bearing of trend interval be disposed with locating guide device (5).
The construction method of concrete shaft Composite Bolt the most according to claim 2, is characterized in that: described positioning and guiding fills
Putting (5) to be made up of four shape curved muscle that are identical and that enclose in cross arrangement around bar bone pipe (2), described curved muscle is by reinforcing bar
Or steel band is bent into, its upper and lower two ends are to be used for being welded on the straightway in the outside wall surface of bar bone pipe (2), and centre is evagination
Circular arc or fold-line-shaped.
The construction method of concrete shaft Composite Bolt the most according to claim 1, is characterized in that: described concrete shaft
(1) there is one or more bar bone pipe (2) in.
The construction method of concrete shaft Composite Bolt the most according to claim 1, is characterized in that: described bar bone pipe (2)
Being common steel tube, coating steel pipe or plastic conduit, its lower port is shunk and is formed the tip closed, and upper port opening is a diameter of
DN15～DN150, pipe thickness is not less than 2.5mm.
The construction method of concrete shaft Composite Bolt the most according to claim 1, it is characterised in that: described bar muscle (4)
It is steel strand wires, steel wire, regular reinforcement or finish rolling deformed bar.
The construction method of concrete shaft Composite Bolt the most according to claim 6, it is characterised in that: when described bar muscle
(4) being steel strand wires and when need not Shi Hanzhang, described anchor uses steel strand wires ball Anchorage System (7)；Described bar muscle (4)
Being steel strand wires and when needing Shi Hanzhang, described anchor uses steel strand wires intermediate plate anchorage (8)；Described bar muscle (4) is steel
When silk, regular reinforcement or finish rolling deformed bar and not Shi Hanzhang, described anchor uses bar muscle (4) end outwards to bend
The bond-anchorage section (9) formed.
The construction method of concrete shaft Composite Bolt the most according to claim 1, it is characterised in that: described injecting cement paste
(3) be the ratio of mud be the cement mortar of 0.4～0.7.
9. according to the construction method of the concrete shaft Composite Bolt described in claim 1-8 any one, it is characterised in that: top
Described step 4 and the order of step 5, be first inserted into bar muscle (4) to bar bone pipe (2), be inserted simultaneously into Grouting Pipe, then to
Add injecting cement paste (3) in bar bone pipe (2), finally extract Grouting Pipe or do not extract.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510360640.8A CN104929117B (en) | 2015-06-26 | 2015-06-26 | Construction method of concrete pole body composite anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510360640.8A CN104929117B (en) | 2015-06-26 | 2015-06-26 | Construction method of concrete pole body composite anchor rod |
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| Publication Number | Publication Date |
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| CN104929117A CN104929117A (en) | 2015-09-23 |
| CN104929117B true CN104929117B (en) | 2016-10-26 |
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| CN201510360640.8A Active CN104929117B (en) | 2015-06-26 | 2015-06-26 | Construction method of concrete pole body composite anchor rod |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464690A (en) * | 2015-12-08 | 2016-04-06 | 天津市力胜通预应力工程有限公司 | Novel pre-stress anchor rod |
| CN106638655B (en) * | 2017-02-22 | 2019-04-05 | 北京健安诚岩土工程有限公司 | Conehead muscle body post-tensioning pile foundation and construction technology |
| CN107816041B (en) * | 2017-10-24 | 2023-02-07 | 建研地基基础工程有限责任公司 | Non-dumping hole-forming prestressed anchor rod, anchor hole leakage-proof structure and construction method thereof |
| CN108643175B (en) * | 2018-06-13 | 2024-03-22 | 北京市地质工程公司 | Rear Zhang Fakang pile pulling combined with pile body rear grouting and construction method thereof |
| CN110130410B (en) * | 2019-06-05 | 2023-12-26 | 中国五冶集团有限公司 | Device for controlling straight anchor section of anti-floating anchor rod |
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| CN104929117A (en) | 2015-09-23 |
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