CN112942387B - Corrosion-resistant high-strength anchor rod and method for geotechnical engineering high-steep slope reinforcement - Google Patents
Corrosion-resistant high-strength anchor rod and method for geotechnical engineering high-steep slope reinforcement Download PDFInfo
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- CN112942387B CN112942387B CN202110153062.6A CN202110153062A CN112942387B CN 112942387 B CN112942387 B CN 112942387B CN 202110153062 A CN202110153062 A CN 202110153062A CN 112942387 B CN112942387 B CN 112942387B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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Abstract
The utility model provides a reinforced (rfd) anticorrosive high strength stock and method to geotechnical engineering steep slope, it includes stock, anticorrosive component, tensile subassembly and slip casting device, through establish the sleeve pipe at the stock overcoat, lie in and fill the anticorrosive coating between stock and the sleeve pipe, the shell anchor assembly that rises of stock is connected with toper anchor head, lie in the notch of toper anchor head and set up drag hook, the slip casting device is connected with the cliff, through pouring into mortar cladding anticorrosive component and tensile subassembly into the anchor eye along the slip casting pipe, intensity is high, effectively avoids the stock to corrode. The invention overcomes the problems of reduced tensile property and shortened effective period of the anchor rod caused by the influence of corrosion on the overall structural strength of the original anchor rod, and has the characteristics of simple structure, good tensile property, avoidance of failure, prolonged effective period of the anchor rod and simple and convenient operation.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering reinforcement, and relates to an anti-corrosion high-strength anchor rod and method for geotechnical engineering high and steep slope reinforcement.
Background
In the field of engineering construction, anchor rods have become the main means for reinforcing high slopes, underground caverns and structures of water conservancy and hydropower engineering in China. As an effective supporting mode, the anchor rod support can obviously improve the stability of surrounding rocks, has the advantages of low supporting cost, low labor intensity, convenient construction and the like, and greatly improves the economic benefit of hydraulic and hydro-power engineering.
Disclosure of Invention
The invention aims to solve the technical problem of providing an anti-corrosion high-strength anchor rod and a method for reinforcing a high and steep slope of geotechnical engineering, wherein the anti-corrosion high-strength anchor rod is simple in structure, a sleeve is sleeved outside the anchor rod, an anti-corrosion layer is filled between the anchor rod and the sleeve, a shell expansion anchor of the anchor rod is connected with a conical anchoring head, an anti-drag hook is arranged in a notch of the conical anchoring head, a grouting device is connected with a rock wall, mortar is injected into an anchor hole along a grouting pipe to coat an anti-corrosion component and a tensile assembly, the strength is high, the anchor rod is effectively prevented from being corroded, the tensile property is good, the failure is avoided, the effective period of the anchor rod is prolonged, and the operation is simple and convenient.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an anti-corrosion high-strength anchor rod for reinforcing a high and steep slope of geotechnical engineering comprises an anchor rod, an anti-corrosion component, a tensile assembly and a grouting device; the sleeve pipe of anticorrosive component cup joints with the stock, sets up the anticorrosive coating between stock and the sleeve pipe, and a plurality of tensile ring cover of tensile subassembly are located the sleeve pipe and are connected rather than, and the toper anchor head is connected with stock one end, and slip casting device is located the other end of stock.
And one end of the anchor rod is provided with an expansion shell anchoring part, and the conical anchoring head is connected with the expansion shell anchoring part.
The tensile assembly comprises a conical anchoring head, a drag-resisting hook, a drag-resisting ring and a tensile tooth, the tensile hook is connected with the conical anchoring head, and the tensile tooth is connected with the tensile ring.
The outer wall of the conical anchoring head is provided with a plurality of notches, and the tensile hooks are positioned in the notches and connected with the notches.
The notch is unanimous with the toper anchor head axial, and a plurality of notches are annular evenly distributed, sets up a long notch between per two short notches.
The outer wall of the anti-pulling ring is provided with a plurality of anti-pulling teeth which are annularly distributed.
The slip casting device includes the sealing member with stopper post complex to and the slip casting pipe that communicates with the stopper post, be located the slip casting and be connected with the nut on the pipe.
The sealing member is a conical retainer ring, an outward extending edge is arranged at the edge of the end with the larger cross section, and a sealing ring is arranged on one side of the extending edge.
And a vacuum branch pipe is arranged on the body of the grouting pipe outside the plug and communicated with the grouting pipe, and the vacuum branch pipe is provided with a ball valve.
The anchoring method of the anti-corrosion high-strength anchor rod for geotechnical engineering high and steep slope reinforcement comprises the following steps:
s1, placing the anchor rod in the anchor hole, and pushing the anchor rod into the anchor hole by making one end of the conical anchoring head of the anchor rod face the anchor hole; filling the anchor rod with a cushion block to enable the anchor rod and the anchor hole to be located on the same axis;
s2, installing a grouting device, enabling one end of a plug of the grouting device to face an anchor hole, pushing the other end of the plug to enable the plug to enter the anchor hole, enabling a sealing ring of a sealing element to be in contact with a rock wall, and adopting a riveting piece to penetrate through an extending edge of the sealing element to be connected and fixed with the rock wall;
s3, mounting grouting equipment, connecting a conveying pipe of the grouting equipment with a grouting pipe, and closing a conveying valve of the conveying pipe;
s4, vacuumizing, connecting the vacuum branch pipe with a vacuum machine, starting the vacuum machine to completely exhaust air in the anchor hole, and closing a ball valve on the vacuum branch pipe;
s5, grouting, starting grouting equipment, opening a delivery valve, enabling mortar to enter a grouting pipe along a delivery pipe, enter a plug column along the grouting pipe, and gush into an anchor hole, and filling the anchor hole with the mortar;
s6, removing, sequentially removing the vacuum machine and the connection between the grouting equipment and the vacuum branch pipe and the grouting pipe, and then removing the grouting device;
and S7, plugging, and sealing the anchor hole at the tail end of the anchor rod by adopting mortar.
An anti-corrosion high-strength anchor rod for reinforcing a high and steep slope of geotechnical engineering comprises an anchor rod, an anti-corrosion component, a tensile assembly and a grouting device; the sleeve pipe and the stock of anticorrosive component cup joint, set up the anticorrosive coating between stock and the sleeve pipe, a plurality of tensile ring cover of tensile subassembly are located the sleeve pipe and are connected rather than outward, and the toper anchor head is connected with stock one end, and the slip casting device is located the other end of stock, simple structure. Through establishing the sleeve pipe at the stock overcoat, be located to fill the anticorrosive coating between stock and the sleeve pipe, the shell anchor assembly that rises of stock is connected with toper anchor head, sets up anti-drag hook in the notch that is located toper anchor head, and the slip casting device is connected with the cliff, through injecting into anticorrosive component of mortar cladding and tensile subassembly in to the anchor eye along the slip casting pipe, and intensity is high, effectively avoids the stock to corrode, and tensile properties is good, avoids becoming invalid, prolongs the stock validity period, and easy operation is convenient.
In a preferred scheme, one end of the anchor rod is provided with a shell expansion anchoring piece, and the conical anchoring head is connected with the shell expansion anchoring piece. When the mortar expansion shell anchoring part is used, the expansion shell of the expansion shell anchoring part is expanded, and the expansion shell is filled after mortar is injected into the anchor hole, so that the expansion shell and the mortar can be connected into a whole, and the tensile property is improved.
In preferred scheme, tensile subassembly includes toper anchor head, drag hook, anti-pull ring and tensile tooth, and tensile hook is connected with toper anchor head, and anti-pull tooth is connected with tensile ring. When the anchor rod is used, the tensile teeth are connected with the tensile ring, so that the overall structural strength of the anchor rod is improved, and the tensile property is improved after the anchor rod is coated by mortar.
In a preferred scheme, the outer wall of the conical anchoring head is provided with a plurality of notches, and the tensile hooks are positioned in the notches and connected with the notches. When the anti-pulling hook is used, the anti-pulling hook is positioned in the notch of the conical anchoring head, and after mortar is injected into the anchor hole, the mortar is fully contacted with the anti-pulling hook in the notch, so that the anti-pulling performance of the anchor rod is further improved.
In the preferred scheme, the notches are axially consistent with the conical anchoring head, the notches are uniformly distributed in an annular shape, and a long notch is arranged between every two short notches. Be located and set up a long notch between two short notches, short notch and long notch all set up the tensile hook of different in size, and when the stock received tensile stress, its tensile strength further improved.
In a preferred embodiment, the outer wall of the tension ring is provided with a plurality of tension teeth arranged in a ring shape. When the pull-resistant ring is used, the tensile rings which are distributed along the axial direction of the sleeve are stressed uniformly, and the tensile teeth which are uniformly distributed on the pull-resistant ring further improve the strength and tensile property of the whole structure.
In a preferred scheme, the grouting device comprises a sealing piece matched with the plug and a grouting pipe communicated with the plug, and a nut is connected to the grouting pipe. When the grouting device is used, the sealing element is fixedly connected with the rock wall and is in contact sealing with the rock wall, the grouting pipe is connected with grouting equipment and is used for conveying mortar, and the mortar enters the plug column along the grouting pipe and then is flushed into the anchor hole.
In a preferred scheme, the sealing element is a conical retainer ring, an outward extending edge is arranged on the edge of the end with the larger cross section, and a sealing ring is arranged on one side of the extending edge. When the sealing ring is used, the riveting piece penetrates through the extending edge of the sealing piece to be connected and fixed with the rock wall, and the sealing ring is in contact sealing with the rock wall.
In the preferred scheme, a vacuum branch pipe is arranged on the body of the grouting pipe outside the plug and communicated with the grouting pipe, and the vacuum branch pipe is provided with a ball valve. When the vacuum grouting device is used, the vacuum branch pipe connected with the grouting pipe is used for being connected with a vacuum machine, air in the anchor hole is pumped out, the anchor hole tends to be close to a vacuum state, the compactness of mortar is improved after the mortar is injected, the mortar is in close contact with the inner wall of the anchor hole, the anchor rod and related components connected with the anchor rod, the air contact is avoided, the adhesive force is improved, and meanwhile, the corrosion resistance is improved.
In a preferred scheme, the anchoring method of the corrosion-resistant high-strength anchor rod for geotechnical engineering high and steep slope reinforcement comprises the following steps:
s1, placing the anchor rod into the anchor hole, and pushing the anchor rod into the anchor hole by making one end of the conical anchoring head of the anchor rod face the anchor hole; filling the anchor rod with a cushion block to enable the anchor rod and the anchor hole to be located on the same axis;
s2, installing a grouting device, enabling one end of a plug of the grouting device to face an anchor hole, pushing the other end of the plug to enable the plug to enter the anchor hole, enabling a sealing ring of a sealing element to be in contact with a rock wall, and adopting a riveting piece to penetrate through an extending edge of the sealing element to be connected and fixed with the rock wall;
s3, mounting grouting equipment, connecting a conveying pipe of the grouting equipment with a grouting pipe, and closing a conveying valve of the conveying pipe;
s4, vacuumizing, connecting the vacuum branch pipe with a vacuum machine, starting the vacuum machine to completely exhaust air in the anchor hole, and closing a ball valve on the vacuum branch pipe;
s5, grouting, starting grouting equipment, opening a delivery valve, enabling mortar to enter a grouting pipe along a delivery pipe, enter a plug column along the grouting pipe, and gush into an anchor hole, and filling the anchor hole with the mortar;
s6, removing, sequentially removing the vacuum machine and the connection between the grouting equipment and the vacuum branch pipe and the grouting pipe, and then removing the grouting device;
and S7, plugging, and sealing the anchor hole at the tail end of the anchor rod by adopting mortar. The method is simple and convenient to operate, the overall structural strength and the tensile property of the anchor rod are improved, the anchor rod is prevented from being corroded, the anchor rod is not easy to lose efficacy, and the validity period of the anchor rod is prolonged.
The utility model provides a reinforced (rfd) anticorrosive high strength stock and method to geotechnical engineering steep slope, it includes stock, anticorrosive component, tensile subassembly and slip casting device, through establish the sleeve pipe at the stock overcoat, lie in and fill the anticorrosive coating between stock and the sleeve pipe, the shell anchor assembly that rises of stock is connected with toper anchor head, lie in the notch of toper anchor head and set up drag hook, the slip casting device is connected with the cliff, through pouring into mortar cladding anticorrosive component and tensile subassembly into the anchor eye along the slip casting pipe, intensity is high, effectively avoids the stock to corrode. The invention overcomes the problems of reduced tensile property and shortened effective period of the anchor rod caused by the influence of corrosion on the overall structural strength of the original anchor rod, and has the characteristics of simple structure, good tensile property, avoidance of failure, prolonged effective period of the anchor rod and simple and convenient operation.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic sectional view at a-a of fig. 1.
FIG. 3 is a schematic structural view of a conical anchoring head according to the present invention.
Fig. 4 is a schematic sectional view at B-B of fig. 3.
Fig. 5 is a schematic structural view of the drag-resistant hook of the present invention.
Fig. 6 is a use state diagram of the present invention.
In the figure: anchor rod 1, shell anchor member 11 that rises, anticorrosive component 2, sleeve pipe 21, anticorrosive coating 22, tensile subassembly 3, toper anchor head 31, tensile hook 32, anti-pulling ring 33, tensile tooth 34, slip casting device 4, plug 41, sealing member 42, slip casting pipe 43, nut 44.
Detailed Description
As shown in fig. 1 to 6, an anti-corrosion high-strength anchor rod for geotechnical engineering high and steep slope reinforcement comprises an anchor rod 1, an anti-corrosion member 2, a tensile component 3 and a grouting device 4; the sleeve 21 and the stock 1 of anticorrosive component 2 cup joint, set up anticorrosive coating 22 between stock 1 and the sleeve 21, a plurality of anti pull rings 33 cover of tensile subassembly 3 are located the sleeve 21 and are connected with it outward, and toper anchor head 31 is connected with 1 one end of stock, and slip casting device 4 is located the other end of stock 1, simple structure. Through establishing sleeve pipe 21 at 1 overcoat of stock, be located to fill anticorrosive coating 22 between stock 1 and the sleeve pipe 21, the shell anchor assembly 11 that rises of stock 1 is connected with toper anchor head 31, be located and set up drag hook 32 in the notch of toper anchor head 31, slip casting device 4 is connected with the cliff, through along slip casting pipe 43 to pour into anticorrosive component of mortar cladding 2 and tensile assembly 3 into the anchor eye, high strength, effectively avoid stock 1 to corrode, the tensile property is good, avoid becoming invalid, extension stock 1 validity period, easy operation is convenient.
In a preferable scheme, one end of the anchor rod 1 is provided with a shell expansion anchoring piece 11, and the conical anchoring head 31 is connected with the shell expansion anchoring piece 11. When the mortar expanding shell anchoring piece is used, the expanding shell of the expanding shell anchoring piece 11 is expanded, and the expanding shell is filled after mortar is injected into the anchor hole, so that the expanding shell and the mortar can be connected into a whole, and the tensile property is improved.
Preferably, the outer wall of the bolt 1 and the inner wall of the sleeve 21 are fully threaded to increase adhesion to the shielding 22.
Preferably, the sleeve 21 is made of PE material, and the outer wall of the sleeve 21 is corrugated, so that the adhesion between the sleeve 21 and the cationic neoprene latex anti-corrosive mortar is increased.
Preferably, the protective layer 22 is an epoxy.
In a preferred scheme, the tensile component 3 comprises a conical anchoring head 31, a tensile hook 32, a tensile ring 33 and a tensile tooth 34, wherein the tensile hook 32 is connected with the conical anchoring head 31, and the tensile tooth 34 is connected with the tensile ring 33. When the anchor rod is used, the tensile teeth 34 are connected with the anti-pulling rings 33, so that the overall structural strength of the anchor rod 1 is improved, and the tensile property is improved after the anchor rod is coated by mortar.
In a preferred embodiment, the outer wall of the conical anchoring head 31 is provided with a plurality of notches, and the drag-resisting hooks 32 are located in the notches and connected with the notches. When the anchor rod is used, the tensile hook 32 positioned in the notch of the conical anchoring head 31 is fully contacted with the tensile hook 32 in the notch after mortar is injected into the anchor hole, so that the tensile property of the anchor rod 1 is further improved.
In the preferred scheme, the notches are axially consistent with the conical anchoring head 31, the notches are uniformly distributed in an annular shape, and a long notch is arranged between every two short notches. Lie in and set up a long notch between two short notches, short notch and long notch all set up tensile hook 32 different in size, and when stock 1 received tensile stress, its tensile strength further improved.
In a preferred embodiment, the outer wall of the anti-pulling ring 33 is provided with a plurality of tensile teeth 34 arranged in a ring shape. When the anti-pulling ring 33 is used, the anti-pulling rings 33 which are distributed along the axial direction of the sleeve 21 are stressed uniformly, and the anti-pulling teeth 34 which are uniformly distributed on the anti-pulling rings 33 further improve the overall structural strength and the anti-pulling performance.
In a preferred embodiment, the grouting device 4 comprises a sealing member 42 engaged with the plug 41, and a grouting pipe 43 communicating with the plug 41, and a nut 44 is connected to the grouting pipe 43. When the grouting device is used, the sealing element 42 is fixedly connected with the rock wall and is in contact sealing with the rock wall, the grouting pipe 43 is connected with grouting equipment and is used for conveying mortar, and the mortar enters the plug 41 along the grouting pipe 43 and then is flushed into the anchor hole.
Preferably, the cation neoprene latex anti-corrosion mortar is adopted, so that the corrosion of the anchoring steel bar is effectively delayed, the anchoring performance of the anchor rod is fully exerted, and the service life is prolonged.
In a preferred embodiment, the sealing element 42 is a tapered collar, an outward extending edge is provided at the edge of the end with the larger cross section, and a sealing ring is provided at one side of the extending edge. When the sealing ring is used, the riveting piece penetrates through the extending edge of the sealing piece 42 to be connected and fixed with the rock wall, and the sealing ring is in contact sealing with the rock wall.
In a preferred scheme, a vacuum branch pipe is arranged on the body of the grouting pipe 43 outside the plug 41 and communicated with the same, and the vacuum branch pipe is provided with a ball valve. When the vacuum grouting device is used, the vacuum branch pipe connected with the grouting pipe 43 is used for being connected with a vacuum machine, air in the anchor hole is pumped out, the anchor hole tends to be close to a vacuum state, the compactness of mortar is improved after the mortar is injected, the mortar is in close contact with the inner wall of the anchor hole, the anchor rod 1 and related components connected with the anchor rod 1, the air contact is avoided, the adhesive force is improved, and meanwhile, the corrosion resistance is improved.
In a preferred embodiment, the anchoring method of the corrosion-resistant high-strength anchor rod for geotechnical engineering high and steep slope reinforcement as described above includes the following steps:
s1, placing the anchor rod 1 into the anchor hole, and pushing the anchor rod 1 into the anchor hole by making one end of the conical anchoring head 31 of the anchor rod 1 face the anchor hole; filling a cushion block in the anchor rod 1 to enable the anchor rod 1 and the anchor hole to be positioned on the same axis;
s2, installing a grouting device, enabling one end of a plug 41 of the grouting device 4 to face an anchor hole, pushing the other end of the plug 41 to enable the plug 41 to enter the anchor hole, enabling a sealing ring of a sealing element 42 to be in contact with the rock wall, and connecting and fixing the sealing ring of the sealing element 42 with the rock wall by adopting a riveting piece to penetrate through an extending edge of the sealing element 42;
s3, grouting equipment is installed, a conveying pipe of the grouting equipment is connected with the grouting pipe 43, and a conveying valve of the conveying pipe is closed;
s4, vacuumizing, connecting the vacuum branch pipe with a vacuum machine, starting the vacuum machine to completely exhaust air in the anchor hole, and closing a ball valve on the vacuum branch pipe;
s5, grouting, starting grouting equipment, opening a delivery valve, enabling mortar to enter a grouting pipe 43 along a delivery pipe, enter a plug column 41 along the grouting pipe 43, gush into an anchor hole, and filling the anchor hole with the mortar;
s6, removing, sequentially removing the vacuum machine and the connection between the grouting equipment and the vacuum branch pipe and the grouting pipe 43, and removing the grouting device 4;
and S7, plugging, and sealing the anchor hole at the tail end of the anchor rod 1 by adopting mortar. This side easy operation is convenient, has improved the overall structure intensity and the tensile strength of stock 1, avoids stock 1 to corrode, makes it difficult inefficacy, has prolonged stock 1 validity period.
As mentioned above to the reinforced anticorrosive high strength stock and method of geotechnical engineering high and steep slope, when installing and using, establish sleeve pipe 21 at stock 1 overcoat, lie in and pack anticorrosive coating 22 between stock 1 and sleeve pipe 21, the shell anchor assembly 11 that rises of stock 1 is connected with toper anchor head 31, lie in the notch of toper anchor head 31 and set up drag hook 32, grouting device 4 is connected with the cliff, along slip casting pipe 43 to pour into mortar cladding anticorrosive component 2 and tensile subassembly 3 into the anchor eye, intensity is high, effectively avoids stock 1 to corrode, tensile property is good, avoid becoming invalid, the extension stock 1 validity period, easy operation is convenient.
When the mortar expanding shell anchoring piece is used, the expanding shell of the expanding shell anchoring piece 11 is expanded, and the expanding shell is filled after mortar is injected into the anchor hole, so that the expanding shell and the mortar can be connected into a whole, and the tensile property is improved.
When the anchor rod is used, the tensile teeth 34 are connected with the anti-pulling rings 33, so that the overall structural strength of the anchor rod 1 is improved, and the tensile property is improved after the anchor rod is coated by mortar.
When the anchor rod is used, the tensile hook 32 positioned in the notch of the conical anchoring head 31 is fully contacted with the tensile hook 32 in the notch after mortar is injected into the anchor hole, so that the tensile property of the anchor rod 1 is further improved.
Lie in and set up a long notch between two short notches, short notch and long notch all set up tensile hook 32 different in size, and when stock 1 received tensile stress, its tensile strength further improved.
When the anti-pulling ring 33 is used, the anti-pulling rings 33 which are distributed along the axial direction of the sleeve 21 are stressed uniformly, and the anti-pulling teeth 34 which are uniformly distributed on the anti-pulling rings 33 further improve the overall structural strength and the anti-pulling performance.
When the grouting device is used, the sealing element 42 is fixedly connected with the rock wall and is in contact sealing with the rock wall, the grouting pipe 43 is connected with grouting equipment and is used for conveying mortar, and the mortar enters the plug 41 along the grouting pipe 43 and then is flushed into the anchor hole.
When the sealing ring is used, the riveting piece penetrates through the extending edge of the sealing piece 42 to be connected and fixed with the rock wall, and the sealing ring is in contact sealing with the rock wall.
When the vacuum grouting device is used, the vacuum branch pipe connected with the grouting pipe 43 is used for being connected with a vacuum machine, air in the anchor hole is pumped out, the anchor hole tends to be close to a vacuum state, the compactness of mortar is improved after the mortar is injected, the mortar is in close contact with the inner wall of the anchor hole, the anchor rod 1 and related components connected with the anchor rod 1, the air contact is avoided, the adhesive force is improved, and meanwhile, the corrosion resistance is improved.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (5)
1. The utility model provides a to reinforced (rfd) anticorrosive high strength anchor rod of geotechnical engineering high steep slope, characterized by: the anchor rod comprises an anchor rod (1), an anti-corrosion component (2), a tensile component (3) and a grouting device (4); the anchor rod anti-corrosion component comprises an anti-corrosion component (2), a sleeve (21) and an anchor rod (1), wherein the sleeve (21) of the anti-corrosion component (2) is sleeved with the anchor rod (1), an anti-corrosion layer (22) is arranged between the anchor rod (1) and the sleeve (21), a plurality of anti-pull rings (33) of a tensile component (3) are sleeved outside the sleeve (21) and connected with the sleeve, a conical anchoring head (31) is connected with one end of the anchor rod (1), and a grouting device (4) is positioned at the other end of the anchor rod (1);
one end of the anchor rod (1) is provided with a shell expansion anchoring piece (11), and the conical anchoring head (31) is connected with the shell expansion anchoring piece (11);
the tensile component (3) comprises a conical anchoring head (31), a tensile hook (32), a tensile ring (33) and a tensile tooth (34), the tensile hook (32) is connected with the conical anchoring head (31), and the tensile tooth (34) is connected with the tensile ring (33);
the outer wall of the conical anchoring head (31) is provided with a plurality of notches, and the drag resisting hook (32) is positioned in the notches and connected with the notches;
the axial direction of the notch is consistent with that of the conical anchoring head (31), a plurality of notches are uniformly distributed in an annular shape, and a long notch is arranged between every two short notches;
the outer wall of the anti-pulling ring (33) is provided with a plurality of anti-pulling teeth (34) which are annularly arranged.
2. The anti-corrosion high-strength anchor rod for geotechnical engineering high and steep slope reinforcement according to claim 1, which is characterized in that: the grouting device (4) comprises a sealing piece (42) matched with the plug column (41) and a grouting pipe (43) communicated with the plug column (41), and a nut (44) is connected to the grouting pipe (43).
3. The anti-corrosion high-strength anchor rod for geotechnical engineering high and steep slope reinforcement according to claim 2, which is characterized in that: the sealing element (42) is a conical retainer ring, an outward extending edge is arranged on the edge of the end with the larger cross section, and a sealing ring is arranged on one side of the extending edge.
4. The anti-corrosion high-strength anchor rod for geotechnical engineering high and steep slope reinforcement according to claim 2, which is characterized in that: and a vacuum branch pipe is arranged on the body of the grouting pipe (43) outside the plug column (41) and communicated with the plug column, and the vacuum branch pipe is provided with a ball valve.
5. The anchoring method of the anti-corrosion high-strength anchor rod for geotechnical engineering high and steep slope reinforcement according to any one of claims 1 to 4, characterized by comprising the following steps:
s1, placing the anchor rod in an anchor hole, enabling one end of the conical anchoring head (31) of the anchor rod (1) to face the anchor hole, and pushing the anchor rod (1) to enter the anchor hole; filling a cushion block in the anchor rod (1) to enable the anchor rod (1) and the anchor hole to be located on the same axis;
s2, installing a grouting device, enabling one end of a plug (41) of the grouting device (4) to face an anchor hole, pushing the other end of the plug (41) to enable the plug (41) to enter the anchor hole, enabling a sealing ring of a sealing element (42) to be in contact with a rock wall, and adopting a riveting piece to penetrate through an extending edge of the sealing element (42) to be connected and fixed with the rock wall;
s3, grouting equipment is installed, a conveying pipe of the grouting equipment is connected with a grouting pipe (43), and a conveying valve of the conveying pipe is closed;
s4, vacuumizing, connecting the vacuum branch pipe with a vacuum machine, starting the vacuum machine to completely exhaust air in the anchor hole, and closing a ball valve on the vacuum branch pipe;
s5, grouting, starting grouting equipment, opening a delivery valve, enabling mortar to enter a grouting pipe (43) along a delivery pipe, enter a plug column (41) along the grouting pipe (43) and gush into an anchor hole, and filling the anchor hole with the mortar;
s6, removing, sequentially removing the vacuum machine and the connection between the grouting equipment and the vacuum branch pipe and the grouting pipe (43), and removing the grouting device (4);
and S7, plugging, and sealing the anchor hole at the tail end of the anchor rod (1) by adopting mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153062.6A CN112942387B (en) | 2021-02-04 | 2021-02-04 | Corrosion-resistant high-strength anchor rod and method for geotechnical engineering high-steep slope reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153062.6A CN112942387B (en) | 2021-02-04 | 2021-02-04 | Corrosion-resistant high-strength anchor rod and method for geotechnical engineering high-steep slope reinforcement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112942387A CN112942387A (en) | 2021-06-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0089656A2 (en) * | 1982-03-24 | 1983-09-28 | International INTEC Company Establishment | Injection anchorages to be put in predrilled holes |
| CN1888327A (en) * | 2006-07-24 | 2007-01-03 | 吴德兴 | Anti-corrosion rockbolt with sack body |
| KR20090070373A (en) * | 2007-12-27 | 2009-07-01 | 대림산업 주식회사 | The permanent bar anchors using steel bars with a high yeild strength for prestressing tendon and it's procedure of installation |
| CN202117696U (en) * | 2011-07-08 | 2012-01-18 | 浙江普泰克金属制品有限公司 | Multi-corrosion-resistant shell-expansion type hollow prestressed grout injection anchor bolt |
| CN104763454A (en) * | 2015-04-08 | 2015-07-08 | 成都理工大学 | Built-in type full-length anticorrosion anchor rod |
| CN111648804A (en) * | 2020-06-11 | 2020-09-11 | 新汶矿业集团有限责任公司华丰煤矿 | Resistance-increasing deformation anchor cable for deep yielding support and assembling and working method |
-
2021
- 2021-02-04 CN CN202110153062.6A patent/CN112942387B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0089656A2 (en) * | 1982-03-24 | 1983-09-28 | International INTEC Company Establishment | Injection anchorages to be put in predrilled holes |
| CN1888327A (en) * | 2006-07-24 | 2007-01-03 | 吴德兴 | Anti-corrosion rockbolt with sack body |
| KR20090070373A (en) * | 2007-12-27 | 2009-07-01 | 대림산업 주식회사 | The permanent bar anchors using steel bars with a high yeild strength for prestressing tendon and it's procedure of installation |
| CN202117696U (en) * | 2011-07-08 | 2012-01-18 | 浙江普泰克金属制品有限公司 | Multi-corrosion-resistant shell-expansion type hollow prestressed grout injection anchor bolt |
| CN104763454A (en) * | 2015-04-08 | 2015-07-08 | 成都理工大学 | Built-in type full-length anticorrosion anchor rod |
| CN111648804A (en) * | 2020-06-11 | 2020-09-11 | 新汶矿业集团有限责任公司华丰煤矿 | Resistance-increasing deformation anchor cable for deep yielding support and assembling and working method |
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| CN112942387A (en) | 2021-06-11 |
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