CN104963339B - A kind of anchor cable centering holder device - Google Patents
A kind of anchor cable centering holder device Download PDFInfo
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- CN104963339B CN104963339B CN201510393401.2A CN201510393401A CN104963339B CN 104963339 B CN104963339 B CN 104963339B CN 201510393401 A CN201510393401 A CN 201510393401A CN 104963339 B CN104963339 B CN 104963339B
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- anchor cable
- groove
- holder device
- centering
- isolation mount
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Abstract
The invention discloses a kind of anchor cable centering holder device, grout pipe (1), ring positioned at centre are wrapped in the isolation mount (2) of described grout pipe (1) periphery and on the outside of corrugated protective conduits (4) ring of outer layer；The inner groovy (2 2) that arranged for interval caves inward on the external groove (2 1) that arranged for interval is outwards recessed on described isolation mount (2) inwall, described isolation mount (2) outer wall；Steel strand wires (3) are respectively and fixedly provided with described external groove (2 1) and inner groovy (2 2), described corrugated protective conduits (4) are in cylinder and the described isolation mount (2) of parcel；Ring is enclosed with equidistant centering bracket base (7) on described corrugated protective conduits (4) outer wall；It overcomes existing Carcel, the shortcoming of installation difficulty, with reduction prestressd anchor cable loss, it is ensured that the consolidation effect of anchor cable and the advantage of construction quality.
Description
Technical field
It is more specifically a kind of the present invention relates to water conservancy and hydropower, road, bridge, Geotechnical Engineering consolidation process field
Anchor cable centering holder device.
Background technology
Since 1960s, Anchor Cable Technique introduced China, the technology obtains widely should in many engineering fields
With the achievement especially obtained in terms of water conservancy and hydropower is more notable.At present, anchor cable turn into the Hydraulic and Hydro-Power Engineering dam foundation, side slope,
The important technology of underground chamber support reinforcement.Anchor cable is typically formed by high strength steel strand layout arranged side by side, by manual type by its
It is pushed in the ground drilling being previously-completed, then first carrying out grouting to its root is adhesively fixed, then is carried out in domatic exposed junction
Tensioning is with to being reinforced rock mass application buffer brake.To ensure that anchor cable is not corroded by extraneous medium (underground water, air), anchor cable body
Isolation mount is provided between each twisted wire, corrugated protective conduits are externally provided with to medium-height trestle, the main function to medium-height trestle is to ensure anchor cable body
Drill center is occupy, anchor cable is had uniform cement grout protection thickness in vitro.
To ensure the construction quality of anchor cable, anchor cable construction must be carried out in strict accordance with related specifications, technical requirements.But in view of
Anchor cable construction is that during the complex conditions such as high gradient slope, narrow cavern, practice of construction, anchor cable installs very difficult mostly,
Mainly show following problem：
1st, anchor cable difficulty, clamping lock Frequent Accidents are pushed
Anchor cable construction is typically carried out by following operational procedure：Measurement and positioning → pore-creating → anchor cable making → anchor cable installation → anchor
Rope grouting → anchor cable grading tension → anchor pier concreting.Wherein, anchor cable is installed and referred to after anchor cable completes, and passes through people
Work mode pushes to the anchor cable body completed in the drilling being previously-completed.
(1) in actual anchor cable installation process, due to anchor cable length length (using wide variety of 3000kN grades of anchor cable as
Example, its length is generally 30m-50m), borehole wall it is coarse, cause centering bracket tab position and borehole wall frictional resistance
Greatly.As anchor cable body is pushed to the increase of length in drilling hole, the frictional resistance born to medium-height trestle is also incrementally increased, and is caused
The installation difficulty of anchor cable also increases therewith.Anchor cable length is longer, whole installation process difficulty is bigger.
(2) in anchor cable practice of construction, because its weight is big, (length is generally for 30m-50m 3000kN level anchor cable weight
0.8t-1.3t), therefore in installation process more than ten people even tens people are needed while undertaking and pushing to complete.Work as anchor cable
During push, coarse borehole wall easily damages anchor cable accessory and overcoat, or even the friction resistance for causing anchor cable body locally to bear
Power is excessive, causes the centering bracket tab position of anchor cable body at this to be stuck in hole, causes Carcel phenomenon.
(3), will in the case of necessity if occur to push the phenomenons such as anchor cable difficulty, Carcel in actual anchor cable work progress
Anchor cable is extracted out, and anchor cable body accessory riding position, the damaged condition of overcoat of extraction are checked, anchor cable is have impact on and applies
The progress for the industry that works.
2nd, anchor cable body is easily reversed, and loss of prestress is serious
(1) anchor cable to parts such as medium-height trestle, corrugated protective conduits by steel strand wires, isolation mount, constitute, and its mechanical characteristic is
Linear flexible object.As the anchor cable body of flexible articles, during carrying and push, anchor cable is known from experience to twist vertically,
So that anchor cable shows " twisted shape ".Because anchor cable body has certain rigidity and elasticity, after twisting, anchor cable is known from experience corresponding
Automatically generate reactive torque, driving anchor cable is rotated to gyratory directions, but the frictional resistance born due to centering bracket tab part
Larger, reactive torque is difficult to overcome frictional resistance, ultimately results in anchor cable body and twisting states are in hole.Cause blast pipe and slip casting
The distortion closure of pipe, influences later stage slip casting effect, or need to extract reparation installation again, or even anchor cable is scrapped.
(2) anchor cable body generation axial torsion not only results in blast pipe and distorted with Grouting Pipe, and to later stage anchorage cable stretching
It will also result in great adverse effect.Because anchor cable body is in twisted state so that anchor cable twisted wire frictional force in stretching process increases
Plus, so that linear loss occurs for anchor force, cause prestressd anchor cable to lose, eventually affect the anchoring effect of anchor cable.
The content of the invention
It is an object of the invention to overcome the shortcomings of existing anchor cable installation difficulty, Carcel and serious loss of prestress, and
A kind of anchor cable centering holder device is proposed, which ensure that the anchoring quality of anchor cable.
A kind of anchor cable centering holder device of the present invention, grout pipe, ring positioned at centre are wrapped in described grouting
The isolation mount and the corrugated protective conduits positioned at outer layer of pipe periphery；Arranged for interval is outwards recessed on described isolation mount inwall
The inner groovy that arranged for interval caves inward on external groove, described isolation mount outer wall；In described external groove and inner groovy
Steel strand wires are respectively and fixedly provided with, described corrugated protective conduits are in cylinder and the described isolation mount of parcel；Protected in described ripple
Ring is enclosed with equidistant centering bracket base in pipe outer wall.
In the above-mentioned technical solutions：The centering being disposed with prism-shaped alternate along its length of described centering bracket base
Bracket tab position and preformed hole.
In the above-mentioned technical solutions：Universal wheel mounting groove, institute are provided with to middle bracket tab position center described
The universal wheel mounting groove stated is by the groove seat for caving in hemispherical and in described groove seat, groove lid is constituted.
In the above-mentioned technical solutions：Hollow out inside described groove seat, is provided with reserved in described groove seat and groove lid
Screw duct.
In the above-mentioned technical solutions：Universal wheel is installed in described groove seat, described universal wheel is by 1 diameter 14mm
Big hard PVC medicine ball and several a diameter of small hard PVC medicine ball compositions of 2.5mm.
In the above-mentioned technical solutions：The axial spacing of described centering bracket base is 1m, described centering bracket base
Salient point engages with the groove of described corrugated protective conduits.
In the above-mentioned technical solutions：It is provided with colligation groove in described groove lid, described colligation groove is located at described pre-
Stay the both sides in screw duct.
In the above-mentioned technical solutions：Described preformed hole is made up of two rectangular openings and a racetrack annular aperture；Two
Two described rectangular openings and a racetrack annular aperture alternate arrangement in the width direction, described racetrack annular aperture are located at two
In the middle of individual described rectangular opening.
In the above-mentioned technical solutions：The material of described centering bracket base is rigid plastics, described to medium-height trestle bottom
Seat size is 360mm × 80mm × 2mm.
In the above-mentioned technical solutions：The height at the centering bracket tab position is 19mm, the size of described rectangular opening
For 20mm × 5mm.
The present invention has following technological merit：1st, the frictional resistance to medium-height trestle and borehole wall is significantly reduced, is protected
The pre-buried depth of design can smoothly be pushed to by having demonstrate,proved anchor cable, it is to avoid Carcel phenomenon occurs, and improves anchor cable construction efficiency.
Traditional anchor cable body is to the sliding friction of the frictional force of medium-height trestle and borehole wall for boss and hole wall.The present invention
Anchor cable centering holder device advantage is that the sliding friction to medium-height trestle and borehole wall effectively can be converted into ten thousand by universal wheel
To the rolling friction of wheel spheroid and borehole wall.Under normal conditions, the rolling friction of object only has the 1/ of sliding-frictional resistance
40 to 1/60, therefore, apparatus of the present invention dramatically reduce the frictional resistance that the anchor cable body during anchor cable is pushed is subject to,
The installation difficulty of anchor cable is reduced from structure, anchor cable once mounting success rate and construction effect is improved, construction work has been saved
It is phase, even more significant for slope reinforcement emergency work.
2nd, ensure after anchor cable installation, anchor cable body is in straight state in drilling, is effectively reduced anchorage cable stretching process
Middle loss of prestress, it is ensured that anchorage cable anchoring quality.
Because the invention has universal wheel unit to medium-height trestle, not only reduce anchor cable and push axis frictional resistance, can also reduce
The radial direction frictional resistance of anchor cable, makes the voluntarily adjustment smooth-going under rotary torque effect of anchor cable body.Therefore the anchor during push is avoided
Cable body twists, it is ensured that after anchor cable installation, and anchor cable is in straight state all the time in drilling.It is this to be in straight shape
The anchor cable of state, in stretching process, the linear loss of anchor force is greatly reduced, it is ensured that prestressd anchor cable reaches design volume
Definite value.Therefore, present invention reduces prestressd anchor cable loss, it is ensured that the consolidation effect of anchor cable and the construction quality of engineering.
Brief description of the drawings
Fig. 1 is the overall structure diagram of anchor cable.
Fig. 2 is A-A diagrammatic cross-sections in Fig. 1.
Fig. 3 is anchor cable centering holder device drawing of the present invention.
Fig. 4 is anchor cable centering holder device profilograph of the present invention.
Fig. 5 is centering bracket tab position drawing in side sectional elevation.
In figure：Grout pipe 1, isolation mount 2, external groove 2-1, inner groovy 2-2, steel strand wires 3, corrugated protective conduits 4, universal wheel
Mounting groove 5, groove seat 5-1, groove lid 5-2, universal wheel 6, centering bracket base 7, centering bracket tab position 7-1, preformed hole 7-2,
Colligation groove 7-3.Rectangular opening 8, racetrack annular aperture 9.
Embodiment
The performance that the invention will now be described in detail with reference to the accompanying drawings, but they do not constitute limitation of the invention, only
It is for example；Advantages of the present invention will become clearer and be readily appreciated that by illustrating simultaneously.
Shown in reference picture 1-5：A kind of anchor cable centering holder device, grout pipe 1, ring positioned at centre are wrapped in institute
The isolation mount 2 and the corrugated protective conduits 4 positioned at outer layer for the periphery of grout pipe 1 stated；Cloth is spaced on the described inwall of isolation mount 2
Put the inner groovy 2-2 that arranged for interval caves inward on the external groove 2-1 being outwards recessed, the described outer wall of isolation mount 2；Described
External groove 2-1 and inner groovy 2-2 on be respectively and fixedly provided with steel strand wires 3, described corrugated protective conduits 4 are in cylinder and parcel is described
Isolation mount 2；Ring is enclosed with equal intervals to middle bracket base 7 on the described outer wall of corrugated protective conduits 4.
The described centering bracket base 7 centering bracket tab position 7-1 being disposed with prism-shaped alternate along its length
With preformed hole 7-2.
Universal wheel mounting groove 5 is provided with to middle bracket tab position 7-1 centers described, described universal wheel is installed
Groove 5 is by the groove seat 5-1 for caving in hemispherical and on described groove seat 5-1, groove lid 5-2 is constituted.
Hollow out inside described groove seat 5-1, reserved screw duct is provided with described groove seat 5-1 and groove lid 5-2.
Universal wheel 6 is installed in described groove seat 5-1, described universal wheel 6 is real by the big hard PVCs of 1 diameter 14mm
Bulbus cordis and several a diameter of small hard PVC medicine ball compositions of 2.5mm.
The axial spacing of described centering bracket base 7 is 1m, the salient point and described ripple of described centering bracket base 7
The groove engaging of protection pipe 4.
Colligation groove 7-3, described colligation groove 7-3 are provided with described groove lid 5-2 and is located at described reserved screw hole
The both sides in road.
Described preformed hole 7-2 is made up of two rectangular openings 8 and a racetrack annular aperture 9；Two squares described in two
Shape hole 8 and a racetrack annular aperture 9 alternate arrangement in the width direction, described racetrack annular aperture 9 are located at described in two
In the middle of rectangular opening 8.
The material of described centering bracket base 7 is rigid plastics, the described size of centering bracket base 7 for 360mm ×
80mm×2mm。
The height of the centering bracket tab position 7-1 is 19mm, and the size of described rectangular opening 8 is 20mm × 5mm.
The Specific construction engineering of the present invention：1st, anchor cable drills：Before anchor cable construction, bored according to construction drawing confirmation request anchor cable
Position, direction, aperture and the hole depth in hole.After drilling terminates, water pipe is stretched into bottom hole, drilling carried out by great deal running water
Rinse.
2nd, anchor cable makes：By piece strappings such as grout pipe 1, steel strand wires 3 and isolation mounts 2 into a branch of, tie up and incited somebody to action after finishing
It loads in corrugated protective conduits 4.
3rd, install to medium-height trestle：It is produced in batches by mould.Centering holder device is installed on ripple protection
The outside of pipe 4 (ring parcel), centering bracket base 7 is 1.0m along the axial spacing of anchor cable.Centering bracket base 7 passes through salient point and ripple
The groove of line protection pipe 4 engages, and carries out lashing by colligation groove 7-3, prevents centering bracket base 7 and anchor when anchor cable enters hole
Cable body produces relative slide.
4th, anchor cable is installed：Anchor cable is installed to be carried out using manual type, and universal wheel friction resistance is made full use of during push
The characteristics of power is small, slowly at the uniform velocity promotes to ensure after anchor cable body installation, and it is in drilling still in straight state.
5th, grouting and prestressed stretch-draw：It is in the milk after anchor cable installation, after after grout cures, in straight state
Anchor cable carry out tensioning step by step.
Above-mentioned unspecified part is prior art.
Claims (8)
1. a kind of anchor cable centering holder device, it is characterised in that：Grout pipe (1), ring positioned at centre are wrapped in described
Grout pipe (1) periphery isolation mount (2) and the corrugated protective conduits (4) positioned at outer layer；On described isolation mount (2) inwall
The inner groovy that arranged for interval caves inward on the external groove (2-1) that arranged for interval is outwards recessed, described isolation mount (2) outer wall
(2-2)；Steel strand wires (3), described corrugated protective conduits (4) are respectively and fixedly provided with described external groove (2-1) and inner groovy (2-2)
In cylinder and the described isolation mount (2) of parcel；Ring is enclosed with equal intervals on described corrugated protective conduits (4) outer wall
Centering bracket base (7)；Described centering bracket base (7) is alternate along its length be disposed with it is convex to medium-height trestle in prism-shaped
Play position (7-1) and preformed hole (7-2)；Installed in the universal wheel that is provided with to middle bracket tab position (7-1) center
Groove (5), described universal wheel mounting groove (5) is by the groove seat (5-1) for caving in hemispherical and the groove in described groove seat (5-1)
Cover (5-2) composition.
2. a kind of anchor cable centering holder device according to claim 1, it is characterised in that：Described groove seat (5-1) is internal
Hollow out, reserved screw duct is provided with described groove seat (5-1) and groove lid (5-2).
3. a kind of anchor cable centering holder device according to claim 1 or 2, it is characterised in that：In described groove seat (5-1)
Universal wheel (6) is inside installed, described universal wheel (6) is a diameter of with several by the big hard PVC medicine balls of 1 diameter 14mm
The small hard PVC medicine ball compositions of 2.5mm.
4. a kind of anchor cable centering holder device according to claim 3, it is characterised in that：Described centering bracket base
(7) axial spacing is 1m, and the salient point of centering bracket base (7) engages with the groove of corrugated protective conduits (4).
5. a kind of anchor cable centering holder device according to claim 2, it is characterised in that：In described groove lid (5-2)
Colligation groove (7-3) is provided with, described colligation groove (7-3) is located at the both sides in described reserved screw duct.
6. a kind of anchor cable centering holder device according to claim 4 or 5, it is characterised in that：Described preformed hole (7-2)
It is made up of two rectangular openings (8) and a racetrack annular aperture (9)；Described rectangular opening (8) and a racetrack annular aperture (9)
Alternate arrangement in the width direction, described racetrack annular aperture (9) is located in the middle of the rectangular opening (8) described in two.
7. a kind of anchor cable centering holder device according to claim 6, it is characterised in that：Described centering bracket base
(7) material is rigid plastics, and described centering bracket base (7) size is 360mm × 80mm × 2mm.
8. a kind of anchor cable centering holder device according to claim 7, it is characterised in that：The centering bracket tab position
The height of (7-1) is 19mm, and the size of described rectangular opening (8) is 20mm × 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510393401.2A CN104963339B (en) | 2015-07-07 | 2015-07-07 | A kind of anchor cable centering holder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510393401.2A CN104963339B (en) | 2015-07-07 | 2015-07-07 | A kind of anchor cable centering holder device |
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| Publication Number | Publication Date |
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| CN104963339A CN104963339A (en) | 2015-10-07 |
| CN104963339B true CN104963339B (en) | 2017-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510393401.2A Active CN104963339B (en) | 2015-07-07 | 2015-07-07 | A kind of anchor cable centering holder device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105442597B (en) * | 2015-12-25 | 2017-10-13 | 中铁十四局集团第二工程有限公司 | A kind of autonomous supercharging anchor cable and its construction method |
| CN105804076A (en) * | 2016-03-26 | 2016-07-27 | 安徽同济建设集团有限责任公司 | Pre-stressed anchor cable and foundation pit supporting pre-stressed anchor cable construction method |
| CN106638591A (en) * | 2016-12-14 | 2017-05-10 | 长江勘测规划设计研究有限责任公司 | Multi-layer nest and coaxial sequencing assembly type anchor cable construction and installation method |
| CN108505457A (en) * | 2018-04-16 | 2018-09-07 | 杭州屹方建筑科技有限公司 | A kind of method that steel flanged beam cemented rock arch bridge side wall is reinforced |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2284265Y (en) * | 1997-01-23 | 1998-06-17 | 北京市建筑工程研究院 | Non-sticking prestressing anchor tendon |
| CN2602163Y (en) * | 2002-11-25 | 2004-02-04 | 谢兵 | Anchor wire isolation rack |
| CN201268849Y (en) * | 2008-06-18 | 2009-07-08 | 中国葛洲坝集团股份有限公司 | External centering support of steel anchor rod |
| CN203062160U (en) * | 2013-01-17 | 2013-07-17 | 中建三局第二建设工程有限责任公司 | Centering bracket for anchor rod |
| CN203050746U (en) * | 2013-02-21 | 2013-07-10 | 浙江普泰克金属制品有限公司 | Anchor rod centering machine |
| CN204780899U (en) * | 2015-07-07 | 2015-11-18 | 长江勘测规划设计研究有限责任公司 | Anchor rope centering support device |
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2015
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