CN104763454A - Built-in type full-length anticorrosion anchor rod - Google Patents
Built-in type full-length anticorrosion anchor rod Download PDFInfo
- Publication number
- CN104763454A CN104763454A CN201510162241.0A CN201510162241A CN104763454A CN 104763454 A CN104763454 A CN 104763454A CN 201510162241 A CN201510162241 A CN 201510162241A CN 104763454 A CN104763454 A CN 104763454A
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- Prior art keywords
- anchor
- concave shaped
- built
- concave
- anticorrosion
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0013—Protection against corrosion
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Abstract
The invention relates to an anchor rod of geotechnical engineering, in particular to a built-in type full-length anticorrosion anchor rod. One end of a hollow threaded rod is connected with the front end of the anchor rod, the other end of the hollow threaded rod is connected with an external anchor head, and an aligner is mounted on the hollow threaded rod; the external anchor rod comprises a concave tray, wherein the concave tray comprises a tray; a concave cavity is connected in the center of the tray; the concave cavity of the concave tray is connected with the hollow threaded rod through a gasket and a nut, and a concave sealing cap is arranged in the concave cavity; the concave tray is fixed on a rack wall through a cement steel bolt; a grouting and gas exhausting tube is mounted in the concave cavity of the concave tray; a protective layer is arranged at the outer side of the tray of the concave tray. According to the built-in type full-length anticorrosion anchor rod, the grouting and fixing is used for realizing anti-corrosion protection on the rod body, and the external anchor rod realizes anti-corrosion protection on the external anchor head, and the anti-corrosion protection of the whole anchor rod is realized by sealing through a protective layer, and the built-in type full-length anticorrosion anchor rod is especially suitable for perpetual rock-soil anchoring projects with high anti-corrosion requirements.
Description
Technical field
The present invention relates to the anchor pole of geotechnical engineering, be specially built-in total length anticorrosion anchor rod.
Background technology
In underground construction, mining engineering, foundation ditch and slope project that geotechnical engineering relates to, anchor pole is a kind of main support technology, and it has wide range of applications, and consolidation effect is good.But along with being on the increase of engineering construction, the geological conditions that the engineering relating to anchoring faces becomes increasingly complex, and new problem continues to bring out, wherein anchor pole etching problem is exactly a critical problem needing solution badly.
Because stratum or underground water always have light or heavy corrosivity to concrete and anchor pole, so the durability of permanent anchoring, anti-floating or resistance to plucking engineering and bearing capacity are difficult to obtain effective guarantee, need to carry out preservative treatment to anchor pole.Conventional anchor seldom considers the Anticorrosion of anchor pole in Design and manufacturing process.Also there is the problems such as complex structure, corrosion resistance be not good in some anticorrosion anchor rods come into operation.
The measure of anchor pole aseptic technic mainly contains isolation and insulation, and main method has the protections of anchor pole zinc coat, epoxy coating, grouting reinforcement, the protection of sleeve pipe parcel etc., and wherein grouting reinforcement is one of topmost anti-corrosion mode.The research major part of anticorrosion anchor rod is still concentrated on to the anticorrosion research of the body of rod, the anticorrosion research of the outer anchor head of shorter mention.As application number Anti-corrosion metal anchoring-bolt disclosed in CN97217266.1, the manufacturing procedure of its surface electrical coating is complicated, thickness is very little, and the collision scraping in accumulating, construction easily makes its surface anticorrosion pull-up fall to losing efficacy; Application number is a kind of mine thermoplastic anticorrosion anchor rod suspension device disclosed in 201220476433.0, need heating and melting thermoplastic, complex operation, and structure is too complicated, poor practicability when it carries out corrosion prevention operation; Application number is a kind of bellows anticorrosion anchor rod disclosed in 201220609725.7, and its anticorrosion structure is a kind of fluid-tight sack, reduces the bond stress of anchor pole and cement mortar, also easily causes bag breakage and loses antiseptic effect when have impact on anchoring quality and construct.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of built-in total length anticorrosion anchor rod, effectively anticorrosion to the carrying out of anchor pole, concrete technical scheme is:
Built-in total length anticorrosion anchor rod, comprises hollow thread bar, anchor pole front end, outer anchor head, topping; Described hollow thread bar one end is connected with anchor pole front end, and the other end is connected with outer anchor head, and hollow thread bar is provided with centralizer; Outer anchor head comprises concave shaped pallet, and concave shaped pallet comprises pallet, and tray center connects cavity, and the cavity of concave shaped pallet is connected with hollow thread bar with nut by pad, and cavity is by concave shaped sealing cap; The pallet of concave shaped pallet is close to the one side of crag with zigzag bur, and concave shaped pallet is fixed on crag by cement steel nail, the cavity of concave shaped pallet leaves aperture for installing grouting air-discharging pipe, matcoveredn outside the pallet of concave shaped pallet.
Described anchor pole front end is solid threaded rod, and solid threaded rod is connected with hollow thread bar by branch sleeve, has slurry outlet in the middle part of branch sleeve, and slurry outlet is communicated with the hollow cavity of hollow thread bar, and branch sleeve outer wall has slurry-blocking device.Slurry-blocking device is annulus, and annulus has the baffle plate of trumpet type.
With the strong solid threaded rod of Anchor Agent anchoring morning, stretch-draw Shi Hanzhang can be carried out to anchor pole after early strong Anchor Agent reaches some strength requirement, and pass through the hollow cavity cement injection mortar of hollow thread bar, realize full length fastening.
Or described anchor pole front end is expansion shell type anchoring head, and expansion shell type anchoring head is connected with hollow thread bar by screw thread.
Expansion shell type anchoring head adopts common steel to rise shell, is sent into by anchor pole after in boring, by can Shi Hanzhang after the pressure spreading of the expansion shell type anchoring crown, and by the hollow cavity cement injection mortar of hollow thread bar, realizes full length fastening.
Built-in total length anticorrosion anchor rod provided by the invention, the anticorrosive protection of anchor rod body is achieved by grouting reinforcement, by the built-in anticorrosive protection achieving outer anchor head of outer anchor head, the outer anchor head of " dark anchor formula " can not be exposed outside boring, but be built in boring, realizing anchor pole total length corrosion-resistant simultaneously, in turn save the originally external space shared by outer anchor head, effectively add working space, decrease the interference to construction and adverse effect, the anticorrosive protection of whole anchor pole is achieved by topping sealing, anchor pole can be effectively anticorrosive, antiseptic property is reliable lastingly, applied widely, be particularly useful for the anticorrosion permanent geotechnical anchor engineering having requirement for height.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention 1 structural representations;
Fig. 2 is the partial structurtes schematic diagram of embodiments of the invention 1.
Fig. 3 is centralizer structural representation of the present invention;
Fig. 4 is embodiments of the invention 2 structural representations;
Fig. 5 is concave shaped support holder structure schematic diagram of the present invention.
Specific embodiment
Accompanying drawings the specific embodiment of the present invention.
Embodiment 1
As shown in Figure 1, built-in total length anticorrosion anchor rod, comprises hollow thread bar 16, anchor pole front end, outer anchor head, topping 3; Described hollow thread bar 16 one end is connected with anchor pole front end, and the other end is connected with outer anchor head, hollow thread bar 16 is provided with centralizer 17;
Outer anchor head comprises concave shaped pallet 4, concave shaped pallet 4 comprises pallet, and tray center connects cavity, and the cavity of concave shaped pallet 4 is connected with hollow thread bar 16 with nut 6 by pad 8, nut 6 is damp type nut, the structural carbon steel that material adopts Q235A, tensile strength is not less than 375MPa.Cavity is sealed by concave shaped sealing cap 2, fills butter 5 in seal cavity; The pallet of concave shaped pallet 4 is close to the one side of crag with zigzag bur; concave shaped pallet 4 is fixed on crag by cement steel nail 1; the cavity of concave shaped pallet 4 leaves aperture for installing grouting air-discharging pipe 7, matcoveredn 3 outside the pallet of concave shaped pallet 4.
As shown in Figure 2, described anchor pole front end comprises solid threaded rod 13, and solid threaded rod 13 is connected with hollow thread bar 16 by branch sleeve 10, has slurry outlet 15 in the middle part of branch sleeve 10, slurry outlet 15 is communicated with the hollow cavity of hollow thread bar 16, and branch sleeve 10 outer wall has slurry-blocking device 14.Slurry-blocking device 14 is annulus, and annulus has the baffle plate of trumpet type.
Solid threaded rod 13 forms the body of rod, the zinc-plated process of the body of rod with hollow thread bar 16, and hollow thread bar 16 external diameter is 25 ~ 40mm, and wall thickness is 5mm; Solid threaded rod 13 adopts indented bars, and diameter is 20 ~ 30mm, and body of rod total length is 2 ~ 6m, and solid threaded rod 13 is 1: 6 ~ 1: 2 with the length ratio of hollow thread bar 16.
Branch sleeve 10 is made up of structural carbon steel, and tensile strength is greater than the tensile strength of solid threaded rod 13 and hollow thread bar 16, and external diameter is greater than hollow thread bar 16 external diameter 10 ~ 15mm; In the middle part of branch sleeve 10, slurry outlet 15 quantity is not less than 2.
Slurry-blocking device 14 adopts plastic material, is connected with branch sleeve 10, and baffle plate outer rim and hole wall fit.
As shown in Figure 3, centralizer 17 wears the cylinder of positioning rule for appearance, and adopt plastic material, centralizer 17 inner surface is connected with hollow thread bar 16, and outer rim contacts with hole wall.
Rockbolt installation: carry out holing and clearing up boring on crag with auger, puts into early strong Anchor Agent 12 at foot of hole; Secondly, by built-in total length anticorrosion anchor rod rig to rotate the mode installation in position such as punching press, the solid threaded rod 13 of built-in total length anticorrosion anchor rod front end will early stir in strong Anchor Agent extruding, and filling is closely knit, forms early strong anchoring body; After early strong anchoring body reaches some strength, outer anchor head, on request Shi Hanzhang are installed; Finally, carry out slip casting, should accomplish that cement mortar 9 filling in holing is closely knit, complete rockbolt installation.
Operating principle: the shank portion anticorrosion employing cement mortar consolidation protection of built-in total length anticorrosion anchor rod, be one of current topmost anticorrosion means, under filling uniformly densely situation, antiseptic effect is good; Also sealed with concave shaped sealing cap 2 by built-in outer anchor head, the mode of middle filling butter reaches the anticorrosion of outer anchor head; The scar near boring is smeared by cement paste or concrete formation topping 3 envelope; topping 3 intensity is not less than C30; protective layer thickness is not less than 50mm, concave shaped pallet 4 and whole anchoring system seal protection is got up, and reaches the object completely cut off with outside air and water.Achieved the anticorrosive function of anchor pole by these three layers of protective systems, antiseptic effect is reliable lastingly.
Embodiment 2
As shown in Figure 4, built-in total length anticorrosion anchor rod, comprises hollow thread bar 16, anchor pole front end, outer anchor head, topping 3; Described hollow thread bar 16 one end is connected with anchor pole front end, and the other end is connected with outer anchor head, hollow thread bar 16 is provided with centralizer 17;
Outer anchor head comprises concave shaped pallet 4, and concave shaped pallet 4 comprises pallet, and tray center connects cavity, and the cavity of concave shaped pallet 4 is connected with hollow thread bar 16 with nut 6 by pad 8, and cavity fills butter 5 by concave shaped sealing cap 2 seal cavity; The pallet of concave shaped pallet 4 is close to the one side of crag with zigzag bur, concave shaped pallet 4 is fixed on crag by cement steel nail 1, the cavity of concave shaped pallet 4 leaves aperture for installing grouting air-discharging pipe 7, grouting air-discharging pipe 7 is plastic pipe, has slip casting and degassing function concurrently.Matcoveredn 3 outside the pallet of concave shaped pallet 4.
Described anchor pole front end comprises expansion shell type anchoring head 18, and expansion shell type anchoring head 18 is connected with hollow thread bar 16 by screw thread.
Adopt manpower or machine top pressure anchor pole external end head, make expansion shell type anchoring head 18 spreading and be close to hole wall, forming preliminary anchored force, and by the instruments such as jack Shi Hanzhang on request; Finally, carry out slip casting, cement mortar 9 filling in boring is closely knit, completes rockbolt installation.
In addition, as shown in Figure 5, the cavity of the concave shaped pallet 4 of two kinds of embodiments can be reentrant cylindrical cavity, and also can be tapered recess, the outer wall of tapered recess fit with drill hole wall, but at an angle.
Embodiment 1 and the built-in total length anticorrosion anchor rod of embodiment 2 all can carry out installing downwards and upwards installing.When installing downwards, cement mortar 9 is injected by the hollow cavity of hollow thread bar 16, and closely knit to aperture filling by foot of hole, and air is discharged from grouting air-discharging pipe 7; When upwards installing, cement mortar 9 enters boring by grouting air-discharging pipe 7, and closely knit to foot of hole filling by aperture, and air is discharged from the hollow cavity of hollow thread bar 16.
Claims (4)
1. built-in total length anticorrosion anchor rod, is characterized in that: comprise hollow thread bar, anchor pole front end, outer anchor head, topping; Described hollow thread bar one end is connected with anchor pole front end, and the other end is connected with outer anchor head, and hollow thread bar is provided with centralizer; Outer anchor head comprises concave shaped pallet, and concave shaped pallet comprises pallet, and tray center connects cavity, and the cavity of concave shaped pallet is connected with hollow thread bar with nut by pad, and cavity is sealed by concave shaped sealing cap; The pallet of concave shaped pallet is close to the one side of crag with zigzag bur, and concave shaped pallet is fixed on crag by cement steel nail, the cavity of concave shaped pallet leaves aperture for installing grouting air-discharging pipe, matcoveredn outside the pallet of concave shaped pallet.
2. built-in total length anticorrosion anchor rod according to claim 1, it is characterized in that: described anchor pole front end is solid threaded rod, solid threaded rod is connected with hollow thread bar by branch sleeve, slurry outlet is had in the middle part of branch sleeve, slurry outlet is communicated with the hollow cavity of hollow thread bar, and branch sleeve outer wall has slurry-blocking device.
3. built-in total length anticorrosion anchor rod according to claim 2, is characterized in that: slurry-blocking device is annulus, and annulus has the baffle plate of trumpet type.
4. built-in total length anticorrosion anchor rod according to claim 1, is characterized in that: described anchor pole front end is expansion shell type anchoring head, and expansion shell type anchoring head is connected with hollow thread bar by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162241.0A CN104763454A (en) | 2015-04-08 | 2015-04-08 | Built-in type full-length anticorrosion anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162241.0A CN104763454A (en) | 2015-04-08 | 2015-04-08 | Built-in type full-length anticorrosion anchor rod |
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| CN104763454A true CN104763454A (en) | 2015-07-08 |
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|---|---|---|---|
| CN201510162241.0A Pending CN104763454A (en) | 2015-04-08 | 2015-04-08 | Built-in type full-length anticorrosion anchor rod |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422150A (en) * | 2015-11-23 | 2016-03-23 | 浙江工业大学工程设计集团有限公司 | FRP sprinkling irrigation combined anchor bolt |
| CN106014464A (en) * | 2016-07-27 | 2016-10-12 | 屈荐映 | Environment-friendly anchor rod for building municipal engineering |
| CN106149718A (en) * | 2016-07-27 | 2016-11-23 | 屈荐映 | A kind of building municipal works improvement anchor pole |
| CN106223990A (en) * | 2016-07-27 | 2016-12-14 | 屈荐映 | A kind of building municipal works anchor pole |
| CN107059866A (en) * | 2017-06-21 | 2017-08-18 | 湖北武大珞珈工程结构检测咨询有限公司 | A kind of fining twisted steel anchor pole anchor head internal pressure installation system and method |
| CN107268642A (en) * | 2017-06-30 | 2017-10-20 | 浙江中良市政工程有限公司 | Slope reinforcement synthesis structure and construction method |
| CN110594836A (en) * | 2019-09-18 | 2019-12-20 | 浙江发恩集成房屋有限公司 | Prefabricated plate material injection and nail insertion integrated equipment |
| CN111608709A (en) * | 2020-06-04 | 2020-09-01 | 中铁隆昌铁路器材有限公司 | Yielding anchor rod suitable for soft rock large-deformation underground space and supporting method |
| CN112554921A (en) * | 2020-12-04 | 2021-03-26 | 中煤科工开采研究院有限公司 | Hollow tensioning anchor rod surrounding rock reinforcing method |
| CN112554925A (en) * | 2020-12-04 | 2021-03-26 | 中煤科工开采研究院有限公司 | Stretch-draw slip casting stock |
| CN112942387A (en) * | 2021-02-04 | 2021-06-11 | 中国长江三峡集团有限公司 | Corrosion-resistant high-strength anchor rod and method for geotechnical engineering high and steep slope reinforcement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105422150A (en) * | 2015-11-23 | 2016-03-23 | 浙江工业大学工程设计集团有限公司 | FRP sprinkling irrigation combined anchor bolt |
| CN106014464B (en) * | 2016-07-27 | 2018-10-19 | 深圳百勤建设工程有限公司 | A kind of environment-friendly type building municipal works anchor pole |
| CN106014464A (en) * | 2016-07-27 | 2016-10-12 | 屈荐映 | Environment-friendly anchor rod for building municipal engineering |
| CN106149718A (en) * | 2016-07-27 | 2016-11-23 | 屈荐映 | A kind of building municipal works improvement anchor pole |
| CN106223990A (en) * | 2016-07-27 | 2016-12-14 | 屈荐映 | A kind of building municipal works anchor pole |
| CN106149718B (en) * | 2016-07-27 | 2018-11-13 | 屈荐映 | A kind of building municipal works improvement anchor pole |
| CN106223990B (en) * | 2016-07-27 | 2018-10-02 | 屈荐映 | A kind of building municipal works anchor pole |
| CN107059866A (en) * | 2017-06-21 | 2017-08-18 | 湖北武大珞珈工程结构检测咨询有限公司 | A kind of fining twisted steel anchor pole anchor head internal pressure installation system and method |
| CN107059866B (en) * | 2017-06-21 | 2022-09-02 | 武大巨成结构股份有限公司 | Finish rolling deformed steel bar anchor head internal pressure mounting system and method |
| CN107268642A (en) * | 2017-06-30 | 2017-10-20 | 浙江中良市政工程有限公司 | Slope reinforcement synthesis structure and construction method |
| CN110594836A (en) * | 2019-09-18 | 2019-12-20 | 浙江发恩集成房屋有限公司 | Prefabricated plate material injection and nail insertion integrated equipment |
| CN111608709A (en) * | 2020-06-04 | 2020-09-01 | 中铁隆昌铁路器材有限公司 | Yielding anchor rod suitable for soft rock large-deformation underground space and supporting method |
| CN112554921A (en) * | 2020-12-04 | 2021-03-26 | 中煤科工开采研究院有限公司 | Hollow tensioning anchor rod surrounding rock reinforcing method |
| CN112554925A (en) * | 2020-12-04 | 2021-03-26 | 中煤科工开采研究院有限公司 | Stretch-draw slip casting stock |
| CN112942387A (en) * | 2021-02-04 | 2021-06-11 | 中国长江三峡集团有限公司 | Corrosion-resistant high-strength anchor rod and method for geotechnical engineering high and steep slope reinforcement |
| CN112942387B (en) * | 2021-02-04 | 2022-06-07 | 中国长江三峡集团有限公司 | Corrosion-resistant high-strength anchor rod and method for geotechnical engineering high-steep slope reinforcement |
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Application publication date: 20150708 |
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