CN105064356B - Prestress compound bar and cable anchoring device for supporting soft and loose soil mass - Google Patents
Prestress compound bar and cable anchoring device for supporting soft and loose soil mass Download PDFInfo
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- CN105064356B CN105064356B CN201510478142.3A CN201510478142A CN105064356B CN 105064356 B CN105064356 B CN 105064356B CN 201510478142 A CN201510478142 A CN 201510478142A CN 105064356 B CN105064356 B CN 105064356B
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- anchor cable
- hollow drill
- bar
- anchor
- drill
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Abstract
The invention belongs to the technical field of geotechnical engineering supporting, and particularly relates to a prestress compound bar and cable anchoring device for supporting a soft and loose soil mass. An anchor cable positioning guide ring is arranged on the outer wall of a hollow drill bar. Anchor cable guide holes are evenly distributed in the anchor cable positioning guide ring. A protective casing is welded to the anchor cable positioning guide ring. An anchor cable is inserted into the protective casing in a penetrating manner. A bar and cable connecting sleeve is arranged on the inner side of the anchor cable positioning guide ring. A separation rolling bearing is arranged on the bar and cable connecting sleeve. The bar and cable connecting sleeve is mechanically fixed to the hollow drill bar. An anchor cable fixing plate is arranged at the front end of the hollow drill bar. An anchor cable is anchored to the anchor cable fixing plate. A thread is arranged at the tail end of the hollow drill bar. The front end of the hollow drill bar is connected with a drill bit through a connecting rod, and a grouting hole is formed in the side wall of the front end of the hollow drill bar. The prestress compound bar and cable anchoring device is simple in structure, safe and convenient to use, strong in anchoring force and suitable for loose and soft geological conditions with hole collapse easily occurring, and can resist the shear slip effect of surrounding rock-soil masses.
Description
Technical field:
The invention belongs to Geotechnical Engineering support technology field, more particularly, to a kind of weak for tunnel, side slope, base pit engineering
The prestressing force coupled pole rope anchor of loose earth supporting.
Background technology:
With the continuous development of Geotechnical Engineering support technology, prestressed anchor, cable bolting technology are widely used to ground
In the engineering constructions such as lower engineering surrounding rock supporting, slope retaining, pattern foundation pit supporting structure.At present, commonly used prestressed anchor or anchor cable
Support technology is single support form, less using being provided simultaneously with the compound of prestressed anchor and prestressed cable anchorage feature
Anchorage technology, in the form of its construction method is generally using first boring, grouting behind shaft or drift lining, but for weak soil or broken Rock And Soil, due to one-tenth
Easily there is collapse hole phenomenon behind hole, cause slip casting process cannot be normally carried out, or have a strong impact on supporting effect, engineering safety is made
Become to threaten.Simultaneously for single prestressed anchor, because its body of rod area of section is larger, when applying prestressing force, the body of rod produces
Deflection less, the anchor effect of drawing that far-end is stablized with Rock And Soil is nothing like anchor cable, and around anchor cable itself can not resist
The shear action of Rock And Soil.
Content of the invention:
It is an object of the invention to the shortcoming overcoming prior art to exist, provide a kind of for weak loose earth supporting
Prestressing force coupled pole rope anchor, gives full play to the anchoring property of anchor cable, provides huge anchor force, and anchor force is reliable
Be transferred on the stable Rock And Soil that far-end is anchored, strengthen with far-end stablize Rock And Soil draw anchor effect, enable anchor simultaneously
The shearing slip effect of Rock And Soil around bar opposing, and can preferably be applied to the easy loose weak geological conditions that collapse hole occurs.
To achieve these goals, the agent structure of the present invention include drill bit, connecting rod, anchor cable fixed plate, hollow drill,
Protection sleeve pipe, bar rope adapter sleeve, anchor cable positioning and guiding ring, anchor cable pilot hole, separation rolling bearing, anchor cable and injected hole；Hollow
Equipped with the anchor cable positioning and guiding ring of fixing protection sleeve pipe on the outer wall of drilling rod, anchor cable positioning and guiding ring along the circumferential direction uniformly divides
It is laid with anchor cable pilot hole, the quantity of anchor cable pilot hole determines according to the actual demand quantity of anchor cable；Protection sleeve pipe is led from anchor cable
Xiang Kongzhong passes through and is welded on anchor cable positioning and guiding ring, is interspersed with anchor cable, the length of protection sleeve pipe is anchor cable in protection sleeve pipe
Total length deducts anchorage cable anchoring segment length, it is to avoid protection sleeve pipe occurs freely rotatable；Anchor cable positioning and guiding is around hollow drill certainly
By rotating, when hollow drill rotates into stratum under rig twisting force, the anchor cable being distributed in around hollow drill is not sent out
Raw rotation, enables anchor cable smoothly to enter inside Rock And Soil with hollow drill；The inner side of anchor cable positioning and guiding ring is provided with bar rope and connects
Set, bar rope adapter sleeve is provided with and separates rolling bearing, and bar rope adapter sleeve is mechanically anchored on hollow drill, before hollow drill
End is provided with anchor cable fixed plate, and anchor cable fixed plate lengthens along hollow drill axial width to 2 times of hollow drill diameter, to support
Anti- tension deformation；Anchorage cable anchoring in anchor cable fixed plate, by pulling force totally tansitive to hollow drill during anchorage cable stretching；Core drill
Bar tail end is provided with screw thread, is easy to be lengthened as needed；The front end of hollow drill is connected with drill bit by connecting rod, works as sky
The heart drilling rod when diameter changes according to actual needs, can adapt to the model of hollow drill by changing the size of connecting rod
Change, need not make the drill bit of different model；The fin of drill bit is the decussate texture with point, in the driving effect of external rig
The lower penetration power that can produce can readily penetrate through each rocks；The front end side wall of hollow drill has injected hole, makes itself to double as
Drilling rod and Grouting Pipe, can carry out high-pressure slip-casting by these holes after the completion of boring, so that hollow drill is solidified with surrounding formation
Integral, form steel pipe concrete column, on the one hand strengthen the rubbing action of hollow drill and formation-engaging surfaces, on the other hand strengthen empty
The anti-shearing deformability of heart drilling rod.
The present invention use when, first will be connected with anchor cable positioning and guiding ring with separate rolling bearing, bar rope adapter sleeve, anchor cable solid
Fixed board is fixed on hollow drill, protection sleeve pipe is passed through from the anchor cable pilot hole anchor cable positioning and guiding ring, anchor cable is divided
It is not through in protection sleeve pipe, and its front end is anchored in anchor cable fixed plate；Connecting rod and drill bit are installed again, and by hollow drill with
External rig connects, and drill bit is directed at Rock And Soil position hole to be drilled, starts rig, starts to creep into by default depth, was creeping into
Cooling water is constantly injected to avoid drill bit to cross cause thermal damage in journey；After getting into predetermined depth, stop grouting plug is installed, and is entered by slip casting machine
Horizontal high voltage slip casting, reaches after preset strength after cement mortar, carries out tensioning using prestressed stretch-draw machinery to anchor cable, after tensioning finishes
Anchorage cable anchoring is on external anchorage.
Compared with prior art, its structure is simple, safe and convenient to use for the present invention, and anchor force is strong, can resist surrounding ground
It is adaptable to easily there is the loose weak geological conditions of collapse hole in the shearing slip effect of body.
Brief description:
Fig. 1 is the agent structure principle schematic of the present invention.
Fig. 2 is anchor cable positioning and guiding ring of the present invention and the principle schematic diagram. separating rolling bearing.
Specific embodiment:
Below by embodiment and combine accompanying drawing the invention will be further described.
The agent structure of the present embodiment include drill bit 1, connecting rod 2, anchor cable fixed plate 3, hollow drill 4, protection sleeve pipe 5,
Bar rope adapter sleeve 6, anchor cable positioning and guiding ring 7, anchor cable pilot hole 8, separation rolling bearing 9, anchor cable 10 and injected hole 11；Core drill
Equipped with the anchor cable positioning and guiding ring 7 of fixing protection sleeve pipe 5 on the outer wall of bar 1, along the circumferential direction uniform on anchor cable positioning and guiding ring 7
It is distributed with anchor cable pilot hole 8, the quantity of anchor cable pilot hole 8 determines according to the actual demand quantity of anchor cable；Protection sleeve pipe 5 is from anchor
Pass through in rope pilot hole 8 and be welded on anchor cable positioning and guiding ring 7, in protection sleeve pipe 5, be interspersed with anchor cable 10, protection sleeve pipe 5
Length deducts anchor cable 10 anchoring depth for anchor cable 10 total length, it is to avoid protection sleeve pipe 5 occurs freely rotatable；Anchor cable positioning and guiding
Ring 7 rotates freely around hollow drill 4, when hollow drill 4 rotates into stratum under rig twisting force, is distributed in core drill
Anchor cable 10 around bar 4 does not rotate, and so that anchor cable 10 is smoothly entered inside Rock And Soil with hollow drill 4；Anchor cable positioning is led
It is provided with bar rope adapter sleeve 6 to the inner side of ring 7, bar rope adapter sleeve 6 is provided with and separates rolling bearing 9, bar rope adapter sleeve 6 machinery is solid
It is scheduled on hollow drill 4, the tail end of hollow drill 4 is provided with anchor cable fixed plate 3, and anchor cable fixed plate 3 is along hollow drill axial width
Lengthen to 2 times of hollow drill diameter, so that tension deformation can be resisted；Anchor cable 10 is anchored in anchor cable fixed plate 3, anchor cable 10
By on pulling force totally tansitive to hollow drill 4 when drawing；Hollow drill 4 tail end is provided with screw thread, is easy to be lengthened as needed；
The front end of hollow drill 4 is connected with drill bit 1 by connecting rod 2, and when hollow drill 4, diameter changes according to actual needs
When, the model change of hollow drill 4 can be adapted to by changing the size of connecting rod 2, the drill bit 1 of different model need not be made；
The fin of drill bit 1 is the decussate texture with point, and the penetration power that can produce under the driving effect of external rig can be worn easily
Each rocks thoroughly.
Described in the present embodiment, the front end side wall of hollow drill 4 has injected hole 11, makes itself to double as drilling rod and Grouting Pipe, when
High-pressure slip-casting can be carried out by these holes after the completion of boring, so that hollow drill 4 and surrounding formation is solidified integral, form steel pipe
Concrete column, on the one hand strengthens the rubbing action of hollow drill 4 and formation-engaging surfaces, on the other hand strengthens the shearing resistance of hollow drill 4
Shear deformation ability.
The present embodiment use when, first by be connected with anchor cable positioning and guiding ring 7 with the bar rope adapter sleeve 6 separating rolling bearing 9,
Anchor cable fixed plate 3 is fixed on hollow drill 4, and protection sleeve pipe 5 is worn from the anchor cable pilot hole 8 anchor cable positioning and guiding ring 7
Cross, anchor cable 10 is through at respectively in protection sleeve pipe 5, and its front end is anchored in anchor cable fixed plate 3；Connecting rod 2 is installed again and bores
1, and hollow drill 4 is connected with external rig, drill bit 1 is directed at Rock And Soil position hole to be drilled, starts rig, by default depth
Degree starts to creep into, and constantly injects cooling water to avoid drill bit 1 to cross cause thermal damage in drilling process；After getting into predetermined depth, install
Stop grouting plug, and high-pressure slip-casting is carried out by slip casting machine, reach after design strength after cement mortar, using prestressed stretch-draw machinery to anchor
Rope 10 carries out tensioning, and tensioning finishes rear anchor cable 10 and is anchored on external anchorage.
Claims (2)
1. a kind of prestressing force coupled pole rope anchor for weak loose earth supporting is it is characterised in that agent structure includes
Drill bit, connecting rod, anchor cable fixed plate, hollow drill, protection sleeve pipe, bar rope adapter sleeve, anchor cable positioning and guiding ring, anchor cable guiding
Hole, separation rolling bearing, anchor cable and injected hole；Equipped with the anchor cable positioning and guiding of fixing protection sleeve pipe on the outer wall of hollow drill
Ring, anchor cable positioning and guiding ring is distributed uniformly and circumferentially and is provided with anchor cable pilot hole, the quantity of anchor cable pilot hole is according to anchor cable
Actual demand quantity determine；Protection sleeve pipe passes through from anchor cable pilot hole and is welded on anchor cable positioning and guiding ring, protective case
It is interspersed with anchor cable, the length of protection sleeve pipe deducts anchorage cable anchoring segment length for anchor cable total length, it is to avoid protection sleeve pipe occurs in pipe
Freely rotatable；Anchor cable positioning and guiding rotates freely, when hollow drill rotates under rig twisting force around hollow drill
During stratum, the anchor cable being distributed in around hollow drill does not rotate, and so that anchor cable is smoothly entered in ground body with hollow drill
Portion；The inner side of anchor cable positioning and guiding ring is provided with bar rope adapter sleeve, bar rope adapter sleeve is provided with and separates rolling bearing, and bar rope connects
Set is mechanically anchored on hollow drill, and the front end of hollow drill is provided with anchor cable fixed plate, and anchor cable fixed plate is along hollow drill axially
Width lengthens to 2 times of hollow drill diameter, so that tension deformation can be resisted；Anchorage cable anchoring in anchor cable fixed plate, open by anchor cable
By on pulling force totally tansitive to hollow drill when drawing；Hollow drill tail end is provided with screw thread, is easy to be lengthened as needed；Empty
The front end of heart drilling rod is connected with drill bit by connecting rod, when diameter changes hollow drill according to actual needs, can lead to
Cross the model change to adapt to hollow drill for the size changing connecting rod, the drill bit of different model need not be made；The fin of drill bit
For the decussate texture with point, under the driving effect of external rig, the penetration power of generation can penetrate each rocks；Hollow drill
Front end side wall on have injected hole, make itself to double as drilling rod and Grouting Pipe, when boring after the completion of horizontal high voltage is entered by injected hole
Slip casting, makes hollow drill and surrounding formation solidify integral, forms steel pipe concrete column, strengthens hollow drill and formation-engaging surfaces
Rubbing action and the anti-shearing deformability of hollow drill.
2. the prestressing force coupled pole rope anchor for weak loose earth supporting according to claim 1, its feature
When being that this device uses, first by anchor cable positioning and guiding ring with separate rolling bearing, bar rope adapter sleeve, anchor cable fixed plate are fixed on
On hollow drill, protection sleeve pipe is passed through from the anchor cable pilot hole anchor cable positioning and guiding ring, anchor cable is through at respectively protection
In sleeve pipe, its front end is anchored in anchor cable fixed plate；Connecting rod and drill bit are installed again, and by hollow drill with external rig even
Connect, drill bit is directed at Rock And Soil position hole to be drilled, start rig, start to creep into by default depth, constantly note in drilling process
Entering cooling water avoids drill bit to cross cause thermal damage；After getting into predetermined depth, stop grouting plug is installed, and high-pressure slip-casting is carried out by slip casting machine,
Reach after preset strength after cement mortar, using prestressed stretch-draw machinery tensioning is carried out to anchor cable, tensioning finish rear anchorage cable anchoring in
On external anchorage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510478142.3A CN105064356B (en) | 2015-08-07 | 2015-08-07 | Prestress compound bar and cable anchoring device for supporting soft and loose soil mass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510478142.3A CN105064356B (en) | 2015-08-07 | 2015-08-07 | Prestress compound bar and cable anchoring device for supporting soft and loose soil mass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105064356A CN105064356A (en) | 2015-11-18 |
| CN105064356B true CN105064356B (en) | 2017-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510478142.3A Expired - Fee Related CN105064356B (en) | 2015-08-07 | 2015-08-07 | Prestress compound bar and cable anchoring device for supporting soft and loose soil mass |
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| Country | Link |
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| CN (1) | CN105064356B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190743A (en) * | 2017-07-26 | 2017-09-22 | 山东省城乡建设勘察设计研究院 | A kind of composite rod automatic anchor pole and its construction method |
| US10697490B2 (en) * | 2018-07-24 | 2020-06-30 | Ojjo, Inc. | Threaded truss foundations and related systems, methods, and machines |
| CN109296390B (en) * | 2018-09-11 | 2020-11-10 | 福建工程学院 | Anchor cable supporting method for broken surrounding rock roadway |
| CN109441514B (en) * | 2018-12-29 | 2020-07-03 | 湖南达道新能源开发有限公司 | Wing type anchor rod |
| CN110185413A (en) * | 2019-05-27 | 2019-08-30 | 太原理工大学 | A method of stable slip casting channel is formed on easy collapse hole stratum |
| KR102187626B1 (en) * | 2019-07-02 | 2020-12-07 | 주식회사 예성오션테크 | Drilling apparatus |
| CN113006823B (en) * | 2021-03-10 | 2023-07-07 | 浙江省隧道工程集团有限公司 | Rapid supporting system for double-shield TBM fractured rock section and construction method thereof |
| CN114738023A (en) * | 2022-05-13 | 2022-07-12 | 山东建筑大学 | Pressure dispersion type anchoring device and method |
| CN115752829A (en) * | 2022-11-24 | 2023-03-07 | 青岛理工大学 | Anchor cable stress monitoring device and method |
| CN116838396B (en) * | 2023-08-30 | 2023-11-07 | 北京科技大学 | Grouting supporting flexible anchor cable equipment for explosion-proof and impact-proof of high-gas mine tunnel |
| CN116892210B (en) * | 2023-09-08 | 2023-12-01 | 沈阳北方建设股份有限公司 | Sleeve valve pipe grouting device and grouting method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5067732B2 (en) * | 2007-12-11 | 2012-11-07 | 和興テクノ株式会社 | Branch line anchor and its drawing method |
| CN101649616B (en) * | 2008-08-14 | 2011-07-20 | 上海强劲地基工程股份有限公司 | Anchor part with controllable anchorage force |
| CN101629419B (en) * | 2009-08-11 | 2011-11-09 | 汪小刚 | Dispersed compression type internal anchoring bearing body with small aperture and large tonnage |
| CN203270567U (en) * | 2013-05-24 | 2013-11-06 | 李宪奎 | Disassembled type soil body anchor rod combined structural piece |
| CN104563106B (en) * | 2014-12-30 | 2016-05-18 | 中国建筑第八工程局有限公司 | The construction technology of a kind of churning anchor cable drill body and churning anchor cable |
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2015
- 2015-08-07 CN CN201510478142.3A patent/CN105064356B/en not_active Expired - Fee Related
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| CN105064356A (en) | 2015-11-18 |
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Granted publication date: 20170118 Termination date: 20170807 |