CN205530250U - Novel outer anchor head multiple protection of prestressed anchorage cable device - Google Patents
Novel outer anchor head multiple protection of prestressed anchorage cable device Download PDFInfo
- Publication number
- CN205530250U CN205530250U CN201620261417.8U CN201620261417U CN205530250U CN 205530250 U CN205530250 U CN 205530250U CN 201620261417 U CN201620261417 U CN 201620261417U CN 205530250 U CN205530250 U CN 205530250U
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- China
- Prior art keywords
- anchor
- cosmolin
- holding vessel
- slab
- anchor head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model provides a novel outer anchor head multiple protection of prestressed anchorage cable device, in cement pier was located to this multiple protection device of, including locating the inboard bellows of anchor eye port, steel strand wires were located the bellows and the bellows still is equipped with the free section grout pipe, the outer port of bellows is equipped with the backing plate, and the backing plate inboard is equipped with the blast pipe, and the outside is equipped with the anchor slab, and steel strand wires pass anchor slab and fixed with the anchor slab, the anchor slab outside is equipped with buffer board and antiseptic oil holding vessel, anticorrosive oil circuit of the external anchor head of antiseptic oil holding vessel and the anticorrosive oil circuit of drill way section. Restraint the body with the interior anchor head of prestressed anchorage cable and steel strand wires and put into the anchor eye, restraint bellows jecket external week and aim at and lay in the anchor eye 1 at these steel strand wires 2m, installation free section grout pipe, the inboard blast pipe in bellows outer end, and cement pier with main part outer wall interface department installation rubber slab, installation anticorrosive oil circuit of anchor head and the anticorrosive oil circuit of drill way section, at backing plate outside installation anchor slab, at anchor slab outside installation buffer board, antiseptic oil holding vessel.
Description
Technical field
This utility model relates to a kind of Geotechnical Engineering equipment, and the outer anchor head of a kind of novel pre-stressed anchor cable is many
Weight preventer.
Background technology
Prestressed anchorage technology used in Algerian She Erfa dam early than 1934, China
Prestressed anchorage technology applied in the right bank dam foundation of prunus mume (sieb.) sieb.et zucc. scenery with hills and waters storehouse early than 1964, hereafter,
Anchor Cable Technique has obtained popularization and application in numerous engineerings.At present, prestressed anchorage technology becomes ground work
Reinforcement Measures most widely used in journey it.And China's water conservancy, water power, traffic, mine and other base
This construction project is experiencing a unprecedented great development stage, for ensureing the steady of ground and underground engineering
Qualitative, all employ substantial amounts of prestress anchorage cable.
Prestress anchorage cable is a kind of structural system bearing pulling force.Its one end is fixed in good ground
(or in structure), the other end is combined closely with being reinforced thing, forms a kind of new structural complexity.In advance should
Power anchor cable structure is run through connection by outer anchor head 1 and Inner bolt head 2 by steel strand wires 3 and forms (see Fig. 1), steel
Twisted wire 3 is free segment A near the part of outer anchor head 1, and another part and Inner bolt head 2 are anchoring section B.Anchor
Rope Slope protection is numerous, is summed up as follows: (1) overall destruction problem, wherein has an anchor cable whole
Structure all there occurs anchor system in destruction, i.e. stratum destruction (integer support power is not enough, anchor cable intensity not
Enough)；(2) anchoring section problem, injecting cement paste is crushed, corrosion rust is swollen, Suo Shu transfer to from injecting cement paste with
And injecting cement paste and surrounding Rock And Soil failure by shear etc.；(3) free segment problem, support firmly contacts disconnected with Suo Shu
Silk, Suo Shu corrosion and Suo Shu poor durability etc.；(4) outer anchor head problem, anchor plate and surrounding Rock And Soil
Contact failure, anchorage intensity deficiency and outer anchor head corrosion etc..
The structure design aspect of the outer anchor head of prestress anchorage cable, specifies: (1) in water conservancy and hydropower is correlated with Regulations
Anchor head should be made up of parts such as anchor pier, aperture bearing plate, work anchor and sealing of hole protections；(2) anchor head position
The length of steel strand wires should be by anchor pier and thickness of bearing plate, and the height of work anchor, moveable anchor and tensioning equipment separately adds
0.3～0.5m allowance sum determines；(3) bearing capacity of each parts of anchor head, should be with the maximum of single anchor cable
Stretching force matches；(4), during anchor cable locking, the amount of recovery of steel wire or steel strand wires length not should be greater than 5mm；
(5) aperture anchor pier form and physical dimension should be according to the design stretching force of prestress anchorage cable and aperture geology bars
Part determines；(6) billet should be laid in concrete anchor pier top face, and billet should be in close contact with concrete surface,
Should be smooth, bright and clean with work anchor contact surface.
The outer anchor head anti-corrosion measure aspect of prestress anchorage cable, has advised in water conservancy and hydropower is correlated with Regulations
Fixed, but it is qualitative requirement.As anchorage should have anticorrosive measure, and the durability that can meet engineering construction is wanted
Ask；Before prestress anchorage cable is installed, reply anchor cable body does antirust treatment；Non-bonded anchorage cable anchor head position tensioning fixation
After, in time anchor head should be coated with anti-corrosion material, then with concrete enclosing, thickness of encapsulation is no less than 100mm,；
When the outer anchor head of prestress anchorage cable uses xoncrete structure sealing off and covering anchorage, its strength grade of concrete, number of steel bars and rule
Lattice all should meet design code.
Investigated by domestic typical project prestress anchorage cable safeguard procedures and research is visible, anchor cable outer anchor head corrosion
Mainly by concrete protective pier cracking, locally country rock body occur new crack, concrete pier base wrong with country rock position,
The impacts such as anchor cable hole backfill cement mortar leakiness, use the outer anchor of prevention that concrete parcel protection is the most not yet in effect
The corrosion of head.Failure of cable analysis of cases both at home and abroad also indicates that, simple concreting protection does not stop
The generation of outer anchor head position corrosion, or preferable rust-proof effect can not be played.
Utility model content
The purpose of this utility model is to provide the outer anchor head multi-protective device of a kind of novel pre-stressed anchor cable, its tool
There is multilayer proofing structure, it is possible to stop water, air to contact with each other with steel strand wires and anchor head well, can be very well
Prevent outer anchor head from corroding.
For achieving the above object, this utility model takes techniques below scheme:
The outer anchor head multi-protective device of a kind of novel pre-stressed anchor cable, this prestress anchorage cable includes outer anchor head and interior
Anchor head, runs through connection by steel strand wires；A part and the Inner bolt head of these steel strand wires are positioned at anchor hole；This anchor hole
Outside is provided with clump, is coated on interior by another part and the outer anchor head of these steel strand wires, this multi-protective device
Being located in this clump, including the corrugated tube being located at inside this anchor hole port, these steel strand wires are positioned at this corrugated tube
In and this corrugated tube in be additionally provided with the free segment grout pipe led to outside this clump；The external port of this corrugated tube
It is provided with backing plate, inside this backing plate, is provided with the exhaustor led to outside clump；It is provided with anchor slab outside this backing plate,
These steel strand wires through this anchor slab and are fixed with this anchor slab；Buffer board and cosmolin storage it is sequentially provided with outside this anchor slab
Depositing tank, the threaded rod that this buffer board and cosmolin holding vessel pass through to run through is fixed with this anchor slab and is connected, this screw thread
Bar outer end is provided with fixing nut；This steel strand wires end is through leading within this buffer board and cosmolin holding vessel
Hole, this through hole is mutually isolated with the cosmolin in this cosmolin holding vessel；This external anchor head of cosmolin holding vessel
Anticorrosion oil circuit and aperture section anticorrosion oil circuit, this anchor head anticorrosion oil circuit originates in this cosmolin holding vessel, and pile warp should
Anchor slab, is closed to this cosmolin holding vessel；This aperture section anticorrosion oil circuit originates in this cosmolin holding vessel, around
Inside this anchor hole, it is closed to this cosmolin holding vessel.
Further, described anchor hole outer wall is embedded with rubber slab, and described outer wall and described clump
Separating surface is positioned in the middle part of the side of this rubber slab；Described corrugated tube is arranged in rubber slab.
Further, described cosmolin holding vessel is cylindrical shape, and inside has orthogonal dividing plate, by institute
State and inside cosmolin holding vessel, be divided into four independent oil storage space；Described anchor head anticorrosion oil circuit portion outside is even
Logical two oil storage space therein；Section anticorrosion oil circuit portion outside, described aperture connects two other oil storage space.
Further, described corrugated tube is PE material, stretches into 1-2m inside described anchor hole.
Further, it is provided with, inside described backing plate, the bar-mat reinforcement being perpendicular to described corrugated tube.
Further, described clump cross section is trapezoidal, and along described corrugated tube outwardly direction, external diameter
Successively decrease.
The beneficial effects of the utility model are: the outer anchor head preventer of this utility model prestress anchorage cable can be very well
Ground resistance sealing, air contact with each other with steel strand wires and anchor head, can prevent outer anchor head from corroding well, and it is in advance
Stress anchor cable long durability plays guaranteeing role well, has very important significance.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing prestress anchorage cable.
Fig. 2 is the structural representation of the outer anchor head multi-protective device of the novel pre-stressed anchor cable of this utility model.
Fig. 3 is the schematic cross-section at cosmolin holding vessel of the present utility model.
Fig. 4 is the schematic cross-section at outer anchor head of the present utility model.
Fig. 5 is the schematic cross-section at clump of the present utility model and body outer wall interface.
Detailed description of the invention
Hereinafter coordinate accompanying drawing that this utility model is further detailed, but and be not used to limit this practicality
Novel practical range.
As shown in Figure 1 and Figure 2, this utility model provides a kind of novel pre-stressed anchor cable outer anchor head multiple-protection
Device, is applied to Hydraulic and Hydro-Power Engineering, Communication and Transportation Engineering, highway, railway engineering, ground surface works and ground
The outer anchor head protection of the prestress anchorage cable of lower engineering.This prestress anchorage cable and prestress anchorage cable one of the prior art
Sample, including outer anchor head 1 and Inner bolt head 2, runs through connection by steel strand wires 3.A part for these steel strand wires 3
It is positioned at anchor hole 4 with Inner bolt head 2.This anchor hole 4 is outside is provided with clump 5, by another of this steel strand wires 3
In part and outer anchor head 1 are coated on, this multi-protective device is located in this clump 5, including being located at this anchor
Corrugated tube 6 (such as PE material) inside the port of hole 4, stretches into 1-2m inside this anchor hole 4.This steel twists
Line 3 is positioned at this corrugated tube 6 and this corrugated tube 6 is additionally provided with and leads to the filling of this free segment outside clump 5
Slurry pipe 7.The external port of this corrugated tube 6 is provided with backing plate 8, is provided with and leads to outside clump 5 inside this backing plate 8
The exhaustor 9 in portion.Be provided with anchor slab 10 outside this backing plate 8, this steel strand wires 3 through this anchor slab 10 and with this
Anchor slab 10 is fixed.Buffer board 11 and cosmolin holding vessel 12, this buffering it is sequentially provided with outside this anchor slab 10
The threaded rod 13 that plate 11 and cosmolin holding vessel 12 pass through to run through is fixed with this anchor slab 10 and is connected, this screw thread
Bar 13 outer end is provided with fixing nut 14.This buffer board 11 (rubber) plays avoids clump 5 to ftracture and draw
The effect of the infiltrations such as the water that plays, air.This steel strand wires 3 end stores through this buffer board 11 and cosmolin
Through hole within tank 12, this through hole is mutually isolated with the cosmolin in this cosmolin holding vessel 12.This anticorrosion
Oil holding vessel 12 external anchor head anticorrosion oil circuit 15 and aperture section anticorrosion oil circuit 16, this anchor head anticorrosion oil circuit 15
Originate in this cosmolin holding vessel 12, this anchor slab 10 of pile warp, it is closed to this cosmolin holding vessel 12.This hole
Mouth section anticorrosion oil circuit 16 originates in this cosmolin holding vessel 12, inside this anchor hole 4 of pile warp, is closed to this and prevents
Rotten oil holding vessel 12.
In order to prevent the dislocation of clump 5 and body outer wall, this anchor hole 4 outer wall is embedded with rubber slab 17,
And this outer wall is positioned in the middle part of the side of this rubber slab 17 with the separating surface of this clump 5, this corrugated tube 6
It is arranged in rubber slab 17.
As Figure 2-Figure 5, this cosmolin holding vessel 12 is cylindrical shape, inside have orthogonal every
Plate, is divided into four independent oil storage space by internal for this cosmolin holding vessel 12.This anchor head anticorrosion oil circuit
15 in ft connection two oil storage space therein, and this aperture section anticorrosion oil circuit 16 is at ft connection other two
Individual oil storage space.Cellular storage cosmolin is so used to can ensure that anchor head separates with aperture section anticorrosion oil circuit
Store cosmolin.In cellular cosmolin holding vessel 12, cosmolin is prevented with anchor head anticorrosion oil circuit 15 and aperture section
Rotten oil circuit 16 is the closed-loop path supplying cosmolin that two sets are independent respectively, when crack occur in anticorrosion oil circuit
Time, cosmolin then flows out, and in cellular cosmolin holding vessel 12, cosmolin will be anti-along damaged
Rotten oil circuit flows outwardly, and this process utilizes anticorrosion oil circuit aperture little exactly, utilizes capillary principle to be prevented by cellular
In rotten oil holding vessel 12, cosmolin sucks out, and stops outer water to contact the perishable position such as steel strand wires and anchor head,
The work playing prevention clump inside and backing plate and the cracking of Rock And Soil contact surface and cause water, air etc. to penetrate into
With.
As in figure 2 it is shown, be provided with the bar-mat reinforcement 18 being perpendicular to this corrugated tube inside this backing plate 8, to strengthen cement
The structural strength of pier 5, it addition, this clump 5 is integrally conical (circular cone or pyramid), therefore cross section is
Trapezoidal, and along this corrugated tube 6 outwardly direction, outside dimension successively decreases, i.e. its appearance is leaned on towards its axis
Closely.Clump 5 can play the effect preventing outer anchor head 1 exposed part from contacting with water, air etc..
This utility model outer anchor head preventer ground floor protection is the corrugated tube 6 in anchor hole 4, controls anchor cable
In the range of prestressing force avoids certain depth, Rock And Soil produces new crack or crushes and cause water, air isotonic
Enter；Second layer protection is the rubber slab 17 of clump 5 and body outer wall intersection, stops anchor cable and Rock And Soil
The contact surface folding that the dislocation of dynamic adjustment process or detrusion cause；Third layer protection is cellular anticorrosion
Oil holding vessel 12 and cosmolin pipeline, application capillary principle stops outer water contact steel strand wires and anchor head etc. perishable
Erosion position, plays and stops clump inside and backing plate and the cracking of Rock And Soil contact surface to cause water, air etc.
Penetrate into.The outer anchor head preventer of this utility model prestress anchorage cable can stop water, air and steel strand wires well
And anchor head contacts with each other, can prevent outer anchor head from corroding well.
This utility model also provides for the fixing of the outer anchor head multi-protective device of a kind of above-mentioned novel pre-stressed anchor cable
Method, comprises the following steps:
A. the outer wall in main body to be reinforced bores anchor hole 4, and cleans hole wall, it is ensured that hole wall cleans, totally；
B. alignment lays the Inner bolt head 2 of prestress anchorage cable and body restrainted by steel strand wires 3 so that it is with in this anchor hole 4
Heart line is parallel；
C. corrugated tube 6 is enclosed within these steel strand wires 3 and restraints external week and alignment is placed in 1-2m in anchor hole 4, and
Make it with this anchor hole 4 inwall and steel strand wires 3 restrainted body and kept a determining deviation, and with this anchor hole 4 centerline parallel,
Close to ensure that cement mortar restraints filling between body, PE corrugated tube 6 and anchor hole 4 inwall at prestress wire 3
Real；
D. measure and setting-out clump 5 position, and in clump 5, arrange bar-mat reinforcement 18；Install freely
Exhaustor 9 inside section grout pipe 7, corrugated tube 6 outer end, and have a common boundary with this body outer wall at clump 5
Rubber slab 17 is installed at face；
E., anchor head anticorrosion oil circuit 15 (copper pipe of the full cosmolin of band adapter) is installed and aperture section is prevented
Rotten oil circuit 16 (copper pipe of the full cosmolin of band adapter), then install clump 5 formwork for placing and
Backing plate 8, starts joints cement pier 5；
F. clump 5 maintenance removed clump formwork for placing after 14 days, and maintenance started at backing plate 8 after 28 days
Anchor slab 10 is installed in outside, and uses the pre-tension steel strand of jack 3 to restraint body, adjusts steel strand wires 3 and restraints body bias,
Then formal tension steel strand 3 restraints body until designing requirement；
G., threaded rod 13 is installed outside anchor slab 10, buffer board 11 is enclosed within threaded rod 13 and makes it install
Outside anchor slab 10, it is ensured that this buffer board 11 restraints body with steel strand wires 3, anchor slab 10 contacts closely knit；
H. by anchor head anticorrosion oil circuit 15 two ends and section anticorrosion oil circuit 16 two ends, aperture all with cosmolin holding vessel
12 connections, are enclosed within cosmolin holding vessel 12 on threaded rod 13 and make it be arranged on outside buffer board, then use
Cosmolin holding vessel 12, buffer board 11, anchor slab 10 are tightly secured together by fixing nut 14；
I. by free segment grout pipe 7, cement mortar is backfilled, until occurring with concentration cement in exhaustor 9
Till mortar；Concrete secondary backfill is installed outside cosmolin holding vessel 12, buffer board 11, anchor slab 10
Formwork for placing, carries out concrete secondary backfill and pours.Free segment cement mortar, can play prevention country rock body
Cracking, clump be internal and backing plate and the cracking of Rock And Soil contact surface and the effect that causes water, air etc. to penetrate into.
It is pointed out that above-mentioned embodiment is only possible embodiment, be to be expressly understood this
The principle of utility model and propose.Can in the case of without departing substantially from this utility model principle and scope on
State embodiment of the present utility model to carry out many and change and modifications.All such modifications and variations are included in
In the scope that this utility model discloses, and protected by claims.
Claims (6)
1. the outer anchor head multi-protective device of novel pre-stressed anchor cable, this prestress anchorage cable includes outer anchor head
And Inner bolt head, run through connection by steel strand wires；A part and the Inner bolt head of these steel strand wires are positioned at anchor hole；Should
It is provided with clump outside anchor hole, another part and the outer anchor head of these steel strand wires is coated on interior, it is characterised in that:
This multi-protective device is located in this clump, and including the corrugated tube being located at inside this anchor hole port, this steel twists
Line is positioned at this corrugated tube and this corrugated tube is additionally provided with the free segment grout pipe led to outside this clump；Should
The external port of corrugated tube is provided with backing plate, is provided with the exhaustor led to outside clump inside this backing plate；This backing plate
Outside is provided with anchor slab, and these steel strand wires through this anchor slab and are fixed with this anchor slab；It is sequentially provided with slow outside this anchor slab
Punching and cosmolin holding vessel, this buffer board and cosmolin holding vessel are solid with this anchor slab by the threaded rod run through
Fixed connection, this threaded rod outer end is provided with fixing nut；This steel strand wires end is through this buffer board and cosmolin storage
Depositing the through hole within tank, this through hole is mutually isolated with the cosmolin in this cosmolin holding vessel；This cosmolin stores up
Depositing tank external anchor head anticorrosion oil circuit and aperture section anticorrosion oil circuit, this anchor head anticorrosion oil circuit originates in the storage of this cosmolin
Deposit tank, this anchor slab of pile warp, it is closed to this cosmolin holding vessel；This aperture section anticorrosion oil circuit originates in this anticorrosion
Oil holding vessel, inside this anchor hole of pile warp, is closed to this cosmolin holding vessel.
The outer anchor head multi-protective device of novel pre-stressed anchor cable the most according to claim 1, its feature
It is: on described anchor hole outer wall, be embedded with rubber slab, and the separating surface position of described outer wall and described clump
In the middle part of the side of this rubber slab；Described corrugated tube is arranged in rubber slab.
The outer anchor head multi-protective device of novel pre-stressed anchor cable the most according to claim 1 and 2, its
Being characterised by: described cosmolin holding vessel is cylindrical shape, inside has orthogonal dividing plate, by described anti-
It is divided into four independent oil storage space inside rotten oil holding vessel；Described anchor head anticorrosion oil circuit portion outside connects it
In two oil storage space；Section anticorrosion oil circuit portion outside, described aperture connects two other oil storage space.
The outer anchor head multi-protective device of novel pre-stressed anchor cable the most according to claim 1, its feature
It is: described corrugated tube is PE material, stretches into 1-2m inside described anchor hole.
The outer anchor head multi-protective device of novel pre-stressed anchor cable the most according to claim 1, its feature
It is: inside described backing plate, be provided with the bar-mat reinforcement being perpendicular to described corrugated tube.
The outer anchor head multi-protective device of novel pre-stressed anchor cable the most according to claim 1, its feature
It is: described clump cross section is trapezoidal, and along described corrugated tube outwardly direction, external diameter successively decreases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620261417.8U CN205530250U (en) | 2016-03-31 | 2016-03-31 | Novel outer anchor head multiple protection of prestressed anchorage cable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620261417.8U CN205530250U (en) | 2016-03-31 | 2016-03-31 | Novel outer anchor head multiple protection of prestressed anchorage cable device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205530250U true CN205530250U (en) | 2016-08-31 |
Family
ID=56786897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620261417.8U Withdrawn - After Issue CN205530250U (en) | 2016-03-31 | 2016-03-31 | Novel outer anchor head multiple protection of prestressed anchorage cable device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205530250U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714819A (en) * | 2016-03-31 | 2016-06-29 | 中国水利水电科学研究院 | Novel prestressed anchor cable outer anchor head multiple protection device and fixing method thereof |
| CN111910681A (en) * | 2020-07-17 | 2020-11-10 | 中国电建集团中南勘测设计研究院有限公司 | Rock wall crane beam structure and construction method thereof |
-
2016
- 2016-03-31 CN CN201620261417.8U patent/CN205530250U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714819A (en) * | 2016-03-31 | 2016-06-29 | 中国水利水电科学研究院 | Novel prestressed anchor cable outer anchor head multiple protection device and fixing method thereof |
| CN111910681A (en) * | 2020-07-17 | 2020-11-10 | 中国电建集团中南勘测设计研究院有限公司 | Rock wall crane beam structure and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20170912 |