CN111305201A - Tensile type anchor - Google Patents
Tensile type anchor Download PDFInfo
- Publication number
- CN111305201A CN111305201A CN201911387008.7A CN201911387008A CN111305201A CN 111305201 A CN111305201 A CN 111305201A CN 201911387008 A CN201911387008 A CN 201911387008A CN 111305201 A CN111305201 A CN 111305201A
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- China
- Prior art keywords
- anchoring
- anchor
- anchor rod
- framework
- rod body
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a tensile anchoring device, which comprises a tubular anchor rod body, a grouting pipe and an anchor head, wherein the grouting pipe and the anchor head are arranged in the anchor rod body in a penetrating manner; the anchor rod body comprises an anchoring section and a free section; the anchoring section comprises at least two anchoring sections, and an anchoring framework which is used for transversely expanding to form an anchoring hole with an outer diameter smaller than the inner diameter of the anchoring hole when being pressed is arranged between the adjacent anchoring sections; a strip-shaped hole for slurry to flow into the anchor hole is formed between every two adjacent frameworks of the anchoring framework; the grouting pipe is provided with a plurality of grout discharging holes opposite to the strip-shaped holes at the position corresponding to the anchoring framework; the anchor head is arranged at the end, far away from the free section, of the grouting pipe; the anchor rod is beneficial to increasing the structural tensile strength of the anchor rod, improving the permeability and the combination degree of concrete and a soil layer or a rock stratum during grouting, improving the combination degree of the concrete structure after solidification and enhancing the integral stability and the tensile strength.
Description
Technical Field
The invention relates to the field of slope protection, in particular to a tensile anchoring device.
Background
The anchor rod is one of the most important devices in civil construction and is commonly used for reinforcing side slopes and roadways. The anchor rod is divided into an anchoring section and a free section, wherein the anchoring section is buried in the ground layer and has the function of bearing axial tension through grouting.
In the existing structure, in order to increase the pulling force between stock and the stratum, set up the screw thread at the stock lateral wall usually, but this kind of structure still exists tensile strength not enough and not high with the concrete structure bonding degree after the solidification, make the stock not hard up easily, lead to the reinforced structure unstability, influence the stability of whole stratum or stratum, and because the concrete setting rate of traditional grouting technique is very fast, it is not high with the infiltration degree and the bonding degree of whole soil layer or stratum, make to make concrete structure and stock wholly extract easily when receiving the effect of drawing, thereby influence holistic stability.
In view of the above problems, the present invention provides a tensile type anchoring device. The tensile anchoring device is beneficial to increasing the structural tensile strength of the anchor rod, improving the permeability and the combination degree of concrete and a soil layer or a rock stratum during grouting, improving the combination degree of the concrete structure after solidification and enhancing the overall stability and the tensile strength.
Disclosure of Invention
In view of this, the tensile anchoring device provided by the invention is beneficial to increasing the structural tensile strength of the anchor rod, improving the penetration and combination degree of concrete and a soil layer or a rock stratum during grouting, improving the combination degree of the concrete structure after solidification, and enhancing the overall stability and tensile strength of the anchor rod.
The tensile anchoring device comprises a tubular anchor rod body, a grouting pipe and an anchor head, wherein the grouting pipe and the anchor head are arranged in the anchor rod body in a penetrating mode; preferably, the anchor rod body is a circular tube, which belongs to the existing conventional arrangement shape and is not described herein again; the anchor rod body comprises an anchoring section and a free section; the anchoring section comprises at least two anchoring sections, and an anchoring framework which is used for transversely expanding to form an anchoring hole with an outer diameter smaller than the inner diameter of the anchoring hole when being pressed is arranged between the adjacent anchoring sections; a strip-shaped hole for slurry to flow into the anchor hole is formed between every two adjacent frameworks of the anchoring framework; the grouting pipe is provided with a plurality of grout discharging holes opposite to the strip-shaped holes at the position corresponding to the anchoring framework; the anchor head is arranged at the end, far away from the free section, of the grouting pipe; the anchoring sections of the anchoring sections and the anchoring framework can be integrally formed, or can be separately arranged and assembled so as to meet the requirements that when the anchoring sections and the anchoring framework are pressed, the anchoring sections and the anchoring framework are transversely expanded to form radial deformation with the outer diameter smaller than the inner diameter of the anchoring hole and form a supporting framework; the anchor rod body is of a tubular structure and is internally provided with a grouting pipe, so that grout entering the grouting pipe can enter a plurality of strip-shaped holes opposite to a plurality of grout discharging holes after passing through the plurality of grout discharging holes and then enters the anchor hole, and grouting is facilitated; in actual operation, an operator firstly grouts into the grouting pipe through the outer end of the grouting pipe, grout (such as cement slurry) enters the strip-shaped holes of the anchoring framework through the plurality of grouting holes of the grouting pipe and then flows into the anchor holes to fill the anchor holes, then the outer end of the anchor rod body is pressed to transversely expand the anchoring framework (transversely expanding towards the direction vertical to the length direction of the anchor rod body) to form radial deformation with the outer diameter smaller than the inner diameter of the anchor holes and form a lantern shape, so that the firm combination between the whole anchor rod body and a stratum or a rock stratum after the grout is solidified into solid concrete can be ensured, the stability of anchoring can be ensured even if an anchored area vibrates, the combination degree between the anchor rod body and the stratum or the rock stratum can be effectively improved, and the lantern-shaped anchoring framework can also simultaneously become a supporting framework of a solidified concrete structure, the structure strength and the shearing resistance of the cured concrete structure are improved, and meanwhile, radial pressure which is radially expanded along the circumferential direction of the anchor rod body can be generated in the process that the anchoring framework is plastically deformed to form a lantern shape, so that the penetration speed of the grout and the rock stratum or the soil layer is accelerated, and the combination degree of the grout and the rock stratum or the soil layer is greatly improved when the grout is solidified into solid concrete; the anchoring frameworks are arranged at intervals along the length direction of the anchor rod body, so that the combination degree and the structural strength of the anchor rod body and the solidified concrete are further improved; the grouting pipe is made of high-strength materials, so that the overall structural strength and the shearing resistance are improved; outer here means the side of the free section remote from the anchored section.
Further, the outer edges of the anchoring frameworks close to the two ends in the length direction are subjected to circular cutting to enable the frameworks to form a notch part I, and the outer edges of the middle parts of the frameworks are subjected to circular cutting to enable the outer edges of the middle parts of the frameworks to form a notch part II; the anchor rod is beneficial to forming stress weak points at two ends and the middle part (preferably the middle position along the length direction) of the anchor framework along the length direction, so that when the outer end of the anchor rod body is pressed, each framework can be transversely expanded and deformed, the anchor framework is beneficial to forming a lantern shape under external force, the whole anchor rod body is beneficial to firm combination with a stratum or a rock stratum after slurry is solidified into solid concrete, the anchor rod becomes a supporting framework of a solidified concrete structure, and the structural strength and the shear resistance of the solidified concrete structure are improved;
further, the width of the notch part I is larger than that of the notch part II; the width refers to the size of the notch part I and the notch part II along the length direction of the anchor rod body; the notch depth of the notch part II is greater than that of the notch part I; stress weak points are further formed at two ends, particularly the middle position, of the anchoring framework along the length direction, so that when the outer end of the anchor rod body is pressed, the transverse expansion deformation of each framework is facilitated to form a lantern shape under the external force;
further, the length directions of the strip-shaped holes are parallel to the length direction of the anchor rod body; the anchoring framework is favorable for generating plastic deformation and forming a lantern shape when stressed, the penetration speed of the slurry and the stratum or the soil layer is favorably accelerated, the supporting framework of a solidified concrete structure is favorably formed, and the firm combination between the anchoring framework and the stratum or the stratum is favorably improved;
further, the anchoring section is provided with an external thread; the grouting is facilitated, the increase of the bonding degree of the anchor rod body and the solidified concrete is facilitated, and the pulling resistance is improved;
further, the anchor rod body is made of a plastic material; the selection of the plastic material of the anchor rod body belongs to the prior art, such as a modified epoxy resin material with certain plasticity and the like, and is not described herein again; the anchoring framework is favorable for plastic deformation to form a lantern shape when stressed, and the influence on the structural strength of the anchoring framework due to the fracture of the brittleness of the material in the compression process is avoided;
furthermore, an annular compaction piece is arranged at the joint of the anchoring section and the free section and used for plugging an anchor hole during grouting; when the annular compaction piece is not subjected to axial force, the annular compaction piece has a certain distance with the anchor hole opening, and when the annular compaction piece is subjected to the axial force, the annular compaction piece is plastically deformed along with the anchor framework to form a lantern shape, and the compaction piece can approach the anchor hole until the anchor hole opening is abutted, so that the anchor hole opening is blocked, the outflow of grout near the anchor hole opening is avoided, and the density and the compaction degree of grout in the anchor hole are increased;
furthermore, the plurality of grout discharging holes are arranged along the circumferential direction and the length direction of the grout pipe; a plurality of grout discharging holes are arranged at the grouting pipe corresponding to each anchoring framework along the circumferential direction and the length direction of the grouting pipe, so that grouting is further facilitated, and grouting efficiency is improved;
further, the anchor head is fixedly connected with the end part of the grouting pipe to form sealing; preferably, the anchor head is pyramid-shaped or spiral, so that the anchor rod body can be better inserted into the anchor hole and can be firmly combined with a rock stratum or a soil layer;
further, the anchor rod further comprises a mounting device, wherein the mounting device is used for applying axial force (namely force along the length direction of the anchor rod body) to the anchor rod body; do benefit to the performance of the anchor skeleton effect of stock body does benefit to the shutoff of compaction piece to the anchor eye, does benefit to and installs this anchor through applying axial force.
The invention has the beneficial effects that: according to the tensile anchoring device, the anchoring frameworks arranged at intervals of the anchor rod body are beneficial to increasing the structural tensile strength of the anchor rod and the bonding degree with a cured concrete structure, and are also beneficial to improving the permeability and the bonding degree of concrete and a soil layer or a rock stratum during grouting, so that the overall stability and the tensile strength of the anchor rod are enhanced.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention (after the anchoring framework is subjected to plastic deformation);
fig. 3 is a schematic structural view of the anchoring framework of the invention.
Detailed Description
Fig. 1 is a schematic structural diagram of the present invention, fig. 2 is a schematic structural diagram of the present invention (after the anchoring framework is subjected to plastic deformation), fig. 3 is a schematic structural diagram of the anchoring framework of the present invention, as shown in the figure: the tensile anchoring device comprises a round tube-shaped anchor rod body 1, a grouting pipe 5 and an anchor head 6, wherein the grouting pipe 5 is arranged in the anchor rod body 1 in a penetrating manner; the anchor rod body 1 comprises an anchoring section 2 and a free section 3; the anchoring section 2 comprises at least two anchoring sections, and an anchoring framework 4 used for transversely expanding to form an anchoring hole with an outer diameter smaller than the inner diameter of the anchoring hole when being pressed is arranged between the adjacent anchoring sections; a strip-shaped hole 41 for slurry to flow into the anchor hole 7 is formed between every two adjacent frameworks 44 of the anchoring framework 4; the grouting pipe 5 is provided with a grout discharging hole 51 corresponding to the plurality of strip-shaped holes 41 at the position corresponding to the anchoring framework 4; the anchor head 6 is arranged at the end, far away from the free section 3, of the grouting pipe 5; the anchoring sections and the anchoring framework 4 can be integrally formed or can be separately arranged and assembled, and the requirement that the anchoring sections and the anchoring framework are transversely expanded to form radial deformation with the outer diameter smaller than the inner diameter of the anchoring hole when being pressed can be met so as to form a supporting framework; the anchor rod body 1 is of a tubular structure and is internally provided with a grouting pipe 5, so that grout entering the grouting pipe 5 can enter a plurality of strip-shaped holes 41 opposite to a plurality of grout discharge holes 51 after passing through the plurality of grout discharge holes 51 and then enter an anchor hole 7, and grouting is facilitated; in actual operation, an operator firstly grouts the inner part of the grouting pipe 5 through the outer end of the grouting pipe 5, grout (such as cement slurry) enters the strip-shaped holes 41 of the anchor framework 4 through the plurality of grouting holes 51 of the grouting pipe 5 and then flows into the anchor holes 7 to fill the anchor holes, then the outer end of the anchor rod body 1 is pressed to transversely expand the anchor framework 4 (transversely expand towards the direction vertical to the length direction of the anchor rod body 1) to form radial deformation with the outer diameter smaller than the inner diameter of the anchor holes 7 and form a lantern shape, so that the firm combination between the whole anchor rod body 1 and a stratum or a rock stratum after the grout is solidified into solid concrete is facilitated, the anchoring stability can be ensured even if an anchored area is vibrated, the combination degree between the anchor rod body 1 and the stratum or the rock stratum is facilitated to be effectively improved, the lantern-shaped anchor framework 4 also serves as a support framework of the solidified concrete structure, the structure strength and the shearing resistance of the cured concrete structure are improved, and meanwhile, radial pressure which is radially expanded along the circumferential direction of the anchor rod body 1 can be generated in the process that the anchoring framework 4 is plastically deformed to form a lantern shape, so that the penetration speed of the grout and the rock stratum or the soil layer is accelerated, and the combination degree of the grout and the rock stratum or the soil layer is greatly improved when the grout is solidified into solid concrete; the anchoring frameworks 4 are arranged at intervals along the length direction of the anchor rod body 1, so that the combination degree and the structural strength of the anchor rod body 1 and the solidified concrete are further improved; the grouting pipe 5 is made of high-strength materials, so that the overall structural strength and the shear resistance are improved; here outward means the side of the free section remote from the anchor section 2.
In this embodiment, the outer edges of the anchoring skeletons 4 near the two ends in the length direction are circularly cut to form a notch I43 on each skeleton 44, and the middle outer edge is circularly cut to form a notch II42 on the middle outer edge of each skeleton 44; the anchor rod is beneficial to forming stress weak points at two ends and the middle part (preferably the middle position) of the anchor framework 4 in the length direction, so that when the outer end of the anchor rod body 1 is pressed, each framework can be transversely expanded and deformed, the anchor framework 4 is beneficial to forming a lantern shape under external force, the firm combination between the whole anchor rod body 1 and a stratum or a rock stratum after slurry is solidified into solid concrete is facilitated, the anchor rod becomes a supporting framework of a solidified concrete structure, and the structural strength and the shear resistance of the solidified concrete structure are improved.
In this embodiment, the width of the notch I43 is greater than the width of the notch II 42; the width here refers to the dimension of the notch portion I43 and the notch portion II42 along the length direction of the anchor body 1; the notch depth of the notch part II42 is greater than that of the notch part I43; further, stress weak points are formed at two ends, particularly the middle position, of the anchoring framework 4 in the length direction, so that when the outer end of the anchor rod body 1 is pressed, each framework 44 can be expanded and deformed transversely to form a lantern shape under the external force.
In this embodiment, the length direction of the plurality of strip-shaped holes 41 is parallel to the length direction of the anchor rod body 1; the anchoring framework 4 is favorable for generating plastic deformation and forming a lantern shape when stressed, the penetration speed of slurry and a stratum or a soil layer is favorably accelerated, the supporting framework of a solidified concrete structure is favorably formed, and the firm combination between the anchoring framework and the stratum or the stratum is favorably improved.
In this embodiment, the anchoring section is provided with an external thread; the grouting is facilitated, the increase of the bonding degree of the anchor rod body 1 and the solidified concrete is facilitated, and the pulling resistance is improved; the threads are not drawn in the figures.
In this embodiment, the anchor rod body 1 is made of a plastic material; the selection of the plastic material of the anchor rod body 1 belongs to the prior art, such as a modified epoxy resin material with certain plasticity, and the like, which is not described herein again; the plastic deformation of the anchoring framework 4 under stress is facilitated to form a lantern shape, and the influence on the structural strength of the material due to the fracture of the brittleness of the material in the compression process is avoided.
In the embodiment, an annular compaction piece 8 is arranged at the joint of the anchoring section 2 and the free section 3 and is used for plugging the anchoring hole 7 during grouting; when not receiving the axial force, annular compaction piece 8 has the certain distance with anchor eye 7 mouth to when receiving the axial force, take place plastic deformation along with anchor skeleton 4 and form the lantern form, the compaction piece can be along with being close to anchor eye 7 and form the support to anchor eye 7 mouth until, form the shutoff to anchor eye 7 mouth, not only do benefit to and avoid near the thick liquid outflow of anchor eye 7 mouth, more do benefit to the density and the compaction degree of increase anchor eye 7 interior thick liquid. In this embodiment, the grout outlet 51 is arranged in a plurality along the circumferential direction and the length direction of the grout pipe 5; the grout pipe 5 that each anchor skeleton 4 corresponds all arranges along its circumference and length direction and sets up a plurality of row's thick liquid holes 51, further does benefit to the grout and does benefit to and improves grouting efficiency.
In the embodiment, the anchor head 6 is fixedly connected with the end part of the grouting pipe 5 to form sealing; preferably, the anchor head 6 is pyramid-shaped or spiral, which is beneficial to the anchor rod body 1 to be better inserted into the anchor hole 7 and to be firmly combined with rock strata or soil layers.
In the embodiment, the anchor rod further comprises a mounting device, wherein the mounting device is used for applying axial force to the anchor rod body 1; the function of the anchoring framework of the anchor rod body 1 is favorably exerted, the compaction piece 8 is favorably used for plugging the opening of the anchor hole 7, and the anchoring device is favorably installed by applying axial force; the mounting means are not shown in the figures.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A tensile type anchoring device characterized in that: the anchor rod comprises a tubular anchor rod body, a grouting pipe and an anchor head, wherein the grouting pipe and the anchor head are arranged in the anchor rod body in a penetrating manner; the anchor rod body comprises an anchoring section and a free section; the anchoring section comprises at least two anchoring sections, and an anchoring framework which is used for transversely expanding to form an anchoring hole with an outer diameter smaller than the inner diameter of the anchoring hole when being pressed is arranged between the adjacent anchoring sections; a strip-shaped hole for slurry to flow into the anchor hole is formed between every two adjacent frameworks of the anchoring framework; the grouting pipe is provided with a plurality of grout discharging holes opposite to the strip-shaped holes at the position corresponding to the anchoring framework; the anchor head is arranged at the end, far away from the free section, of the grouting pipe.
2. The tension-type anchoring device according to claim 1, wherein: the outer edge ring cutting of the anchoring framework, which is close to the two ends in the length direction, enables each framework to form a notch part I, and the ring cutting of the outer edge of the middle part enables the outer edge of the middle part of each framework to form a notch part II.
3. The tension-type anchoring device according to claim 2, wherein: the width of the notch part I is larger than that of the notch part II; the notch depth of the notch part II is larger than that of the notch part I.
4. The tension-type anchoring device according to claim 1, wherein: the length direction of a plurality of bar holes is parallel with the length direction of stock body.
5. The tension-type anchoring device according to claim 1, wherein: the anchoring section is provided with external threads.
6. The tension-type anchoring device according to claim 1, wherein: the anchor rod body is made of plastic materials.
7. The tension-type anchoring device according to claim 1, wherein: and an annular compaction piece is arranged at the joint of the anchoring section and the free section and is used for plugging the anchor hole during grouting.
8. The tension-type anchoring device according to claim 1, wherein: the grout discharging holes are arranged along the circumferential direction and the length direction of the grout pipe.
9. The tension-type anchoring device according to claim 1, wherein: the anchor head is fixedly connected with the end part of the grouting pipe and forms sealing.
10. The tension-type anchoring device according to claim 1, wherein: the anchor rod further comprises a mounting device, and the mounting device is used for applying axial force to the anchor rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387008.7A CN111305201A (en) | 2019-12-29 | 2019-12-29 | Tensile type anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387008.7A CN111305201A (en) | 2019-12-29 | 2019-12-29 | Tensile type anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111305201A true CN111305201A (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911387008.7A Pending CN111305201A (en) | 2019-12-29 | 2019-12-29 | Tensile type anchor |
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| Country | Link |
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| CN (1) | CN111305201A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354655A (en) * | 2022-01-20 | 2022-11-18 | 河南省地质矿产勘查开发局第四地质矿产调查院 | Anchoring device for preventing landslide geological disasters |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016142105A (en) * | 2015-02-04 | 2016-08-08 | 株式会社ケー・エフ・シー | Rock bolt material pipe |
| CN106759326A (en) * | 2016-12-14 | 2017-05-31 | 重庆大学 | A kind of Stress Control multistage opening type anchor pole and anchoring construction method |
| CN109057840A (en) * | 2018-08-20 | 2018-12-21 | 中钢集团马鞍山矿山研究院有限公司 | Adaptive grouting and reinforcing anchor pole and its anchoring construction method under a kind of high stress |
-
2019
- 2019-12-29 CN CN201911387008.7A patent/CN111305201A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016142105A (en) * | 2015-02-04 | 2016-08-08 | 株式会社ケー・エフ・シー | Rock bolt material pipe |
| CN106759326A (en) * | 2016-12-14 | 2017-05-31 | 重庆大学 | A kind of Stress Control multistage opening type anchor pole and anchoring construction method |
| CN109057840A (en) * | 2018-08-20 | 2018-12-21 | 中钢集团马鞍山矿山研究院有限公司 | Adaptive grouting and reinforcing anchor pole and its anchoring construction method under a kind of high stress |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354655A (en) * | 2022-01-20 | 2022-11-18 | 河南省地质矿产勘查开发局第四地质矿产调查院 | Anchoring device for preventing landslide geological disasters |
| CN115354655B (en) * | 2022-01-20 | 2024-02-27 | 河南省地质矿产勘查开发局第四地质矿产调查院 | Anchoring device for preventing landslide geological disasters |
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Application publication date: 20200619 |
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