CN216477414U - External-winding constant-resistance large-deformation anchor rod - Google Patents
External-winding constant-resistance large-deformation anchor rod Download PDFInfo
- Publication number
- CN216477414U CN216477414U CN202122391606.0U CN202122391606U CN216477414U CN 216477414 U CN216477414 U CN 216477414U CN 202122391606 U CN202122391606 U CN 202122391606U CN 216477414 U CN216477414 U CN 216477414U
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- China
- Prior art keywords
- rolling
- sleeve
- anchor rod
- connecting part
- free section
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- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 title description 2
- 238000005096 rolling process Methods 0.000 claims abstract description 45
- 239000011440 grout Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000007569 slipcasting Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 8
- 238000004873 anchoring Methods 0.000 description 7
- 239000002689 soil Substances 0.000 description 7
- 230000008093 supporting effect Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses an outward-rolling type constant-resistance large-deformation anchor rod, and belongs to the field of anchor rod support. Including outer roll component, free section and anchor section, outer roll component comprises adapting unit, sleeve pipe, outer reelpipe, ring board and cavity disc body, free section body of rod end has the anchor head, outer roll component links to each other with the free section member, and free section body of rod end-to-end connection anchor head, anchor head have arrange the thick liquid hole, and the stock is whole to be hollow structure, can pressurize the slip casting. The concave department in the disc of cavity disc body and the outer protruding position laminating contact of rolling up of outer reelpipe, the outer component of rolling up makes outer reelpipe continue to take place to roll up outward through cavity disc body and warp required pulling force and provide invariable resistance, and cavity disc body removes to the anchor section, can effectively play the cushioning effect. The utility model has simple structure, convenient installation, constant resistance and high elongation, and can meet the actual requirements of engineering.
Description
Technical Field
The utility model belongs to the technical field of anchoring support, and particularly relates to an outward-rolling type constant-resistance large-deformation anchor rod.
Background
The anchor rod is used as a tension member penetrating into the stratum, one end of the anchor rod is connected with an engineering structure, the other end of the anchor rod penetrates into the stratum, the whole anchor rod is divided into a free section and an anchoring section, the free section is an area for transmitting the tension at the head of the anchor rod to an anchoring body, and the function of the free section is to apply prestress on the anchor rod; the anchoring section is an area where the prestressed tendons and the soil layer are bonded by cement paste, and has the functions of increasing the bonding friction effect of the anchoring body and the soil layer, increasing the bearing effect of the anchoring body and transmitting the pulling force of the free section to the deep part of the soil body.
The anchor rod support technology is an engineering technical means for embedding an anchor rod into a rock-soil body to a certain depth so as to improve the strength of the rock-soil body and maintain the stability of the rock-soil body. The strengthening mechanism of bolting can be divided into suspension, composite beam, reinforcement, internal pressure, rock shell, bracing and pinning. The anchor bolt support has low cost, quick action and good support effect, and is widely applied to the fields of mining, traffic, water conservancy, municipal engineering and other underground engineering.
Although the anchor rod has good supporting effect and simple construction, the traditional anchor rod is easy to deform and break under ultimate stress due to low elongation of the anchor rod when the traditional anchor rod is subjected to surrounding rock deformation, rock deep layer fracture deformation or impact load, so that an anchor rod supporting system fails. The allowable deformation of the traditional anchor rod is generally below 200mm, the geological environment becomes more complex along with the increase of the underground construction depth, the phenomenon of large deformation caused by the breakage of deep rock masses often occurs in the construction process of deep foundation pit engineering and tunnel engineering, various safety accidents caused by the large deformation and the damage of the rock masses occur, and the support technology based on the common anchor rod cannot adapt to the large deformation of surrounding rocks to cause the failure of a support system. Aiming at the problem that the existing anchor rod is not suitable for large deformation of the surrounding rock, a novel supporting anchor rod needs to be designed, the requirement of supporting strength is met, and meanwhile, the supporting quality is guaranteed continuously under the condition of large deformation of the surrounding rock.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an outward rolling type constant-resistance large-deformation anchor rod which is simple in structure and constant in resistance.
The purpose of the utility model is realized as follows: an outward rolling type constant-resistance large-deformation anchor rod comprises an outward rolling component, a free section (8) and an anchor head (9), wherein the outward rolling component is connected with the free section (8), the outward rolling component comprises a connecting part (4), a sleeve (5), an outward rolling pipe (6), a circular plate (10) and a hollow circular plate pipe body (7), the connecting part (4) is connected with the sleeve (5), the outward rolling pipe (6) is positioned inside the sleeve (5), the outward rolling pipe (6) is connected with the sleeve (5) through the circular plate (10), an outward rolling is arranged at one end, close to the connecting part (4), of the outward rolling pipe (6), the hollow circular plate pipe body (7) is positioned inside the outward rolling pipe (6), one end, close to the connecting part (4), of the hollow circular plate pipe body (7) is tightly attached to the outward rolling pipe (6), one end, close to the connecting part (4), of the hollow circular plate pipe body (7) slightly protrudes out of the sleeve (5), the hollow disc pipe body (7) is in threaded connection with one end of the free section (8), the anchor head (9) is installed at the other end of the free section (8), a central hole communicated with the hollow disc pipe body (7) and the free section (8) is formed in the hollow disc pipe body, the anchor head (9) is provided with a grout discharging hole communicated with the central hole, the connecting part (4) is connected with the tray (3) through the bolt (2), the bolt (2) is provided with the grout injecting hole (1), and one end of the bolt (2) penetrates through the connecting part (4) and the tray (3) and extends into the hollow disc pipe body (7).
Further, connecting part (4) include joint table (401) and connecting cylinder (402), joint table (401) pass through bolt (2) and be connected with tray (3), the outer wall of connecting cylinder (402) smooth, and the inner wall leaves the screw thread, sleeve pipe (5) and connecting cylinder (402) between threaded connection.
Furthermore, the cross section of the part of the injection bolt (2) positioned in the hollow disc tube body (7) is trapezoidal.
Further, the circular plate (10) is respectively connected with the outer rolling pipe (6) and the sleeve (5) in a welding mode.
Furthermore, the circular plate (10), the outer coil pipe (6) and the sleeve (5) are of an integrated structure.
Furthermore, a preformed hole (11) is formed in the circular ring plate (10).
Further, the anchor head (9) is in threaded connection with the free section (8).
Compared with the prior art, the utility model has the outstanding and beneficial technical effects that: the utility model adopts a hollow pipe body structure, the connecting part, the sleeve, the outer reelpipe, the annular plate and the hollow disc pipe body are matched and connected to form an outer reeling component, the connecting part after installation can push the hollow disc pipe body to extrude the outer reelpipe to deform so as to form prestress and provide constant resistance, the soil body expands to enable the end inner concave disc of the hollow disc pipe body to move towards the anchoring section to extrude the outer reelpipe reeling part, the anchor rod is integrally subjected to large deformation and the elongation rate is increased, thereby solving the problems that the existing anchor rod is deformed and broken under ultimate stress due to low elongation rate of the existing anchor rod and the resistance is not constant so as to cause the failure of an anchor rod supporting system, and the utility model has the advantages of simple structure and convenient installation, the connecting part can push the hollow disc pipe body to extrude the outer reelpipe to deform so as to form prestress, can provide constant resistance and increase the elongation rate of the anchor rod, and can meet the requirement of supporting strength, the problems that a support system fails and the like caused by low elongation of the anchor rod can be effectively solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of the structure of the connecting member of the present invention;
FIG. 4 is a schematic view of the anchor head construction of the present invention;
FIG. 5 is a schematic view of the construction of the bushing of the present invention;
FIG. 6 is a schematic view of the outer wrap structure of the present invention;
FIG. 7 is a schematic view of the hollow disc tube body of the present invention;
FIG. 8 is a schematic diagram of the structure of the circular ring plate of the present invention.
In the figure: 1. a grouting port; 2. a nut; 3. a tray; 4. a connecting member; 401. a connecting table; 402. a connecting cylinder; 5. a sleeve; 6. an outer reel pipe; 7. a hollow disc tube body; 8. a free-segment rod member; 9. an anchor head; 10. a circular ring plate; 11. and (4) draining the water.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, with reference to the drawings in the embodiments of the present invention, clearly and completely describes the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides an outward rolling type constant-resistance large-deformation anchor rod which comprises an outward rolling component, a free section 8 and an anchor head 9, wherein the outward rolling component is connected with the free section 8, the outward rolling component comprises a connecting part 4, a sleeve 5, an outward rolling pipe 6, a circular plate 10 and a hollow circular disk pipe body 7, the connecting part 4 is connected with the sleeve 5, the outward rolling pipe 6 is positioned inside the sleeve 5, the outward rolling pipe 6 is connected with the sleeve 5 through the circular plate 10, one end, close to the connecting part 4, of the outward rolling pipe 6 is provided with an outward turning roll, the hollow circular disk pipe body 7 is positioned inside the outward rolling pipe 6, the inner wall of the outward rolling pipe 6 and the outer wall of the hollow circular disk pipe body 7 are provided with small grooves, friction force can be increased, one end, close to the connecting part 4, of the hollow circular disk pipe body 7 is tightly attached to an outward turning roll of the outward rolling pipe 6, one end, close to the connecting part 4, of the hollow circular disk pipe body 7 slightly protrudes out of the sleeve 5, when the connecting part 4 is installed, the connecting part 4 can push the hollow disc tube body 7 to extrude the outer rolling tube 6 to deform, and prestress is formed so as to provide constant resistance;
the hollow disc tube body 7 is connected with one end of the free section 8 through threads, the anchor head 9 is installed at the other end of the free section 8, the anchor head 9 is connected with the free section 8 through threads, the hollow disc tube body 7 and the free section 8 are internally provided with communicated central holes, the anchor head 9 is provided with a grout outlet communicated with the central holes, the connecting part 4 is connected with the tray 3 through the bolt 2, the bolt 2 is provided with the grout injection hole 1, and one end of the bolt 2 penetrates through the connecting part 4 and the tray 3 and extends into the hollow disc tube body 7.
In the utility model, the connecting part 4 comprises a connecting table 401 and a connecting cylinder 402, the connecting table 401 is connected with the tray 3 through a bolt 2, the outer wall of the connecting cylinder 402 is smooth, threads are reserved on the inner wall of the connecting cylinder 402, the sleeve 5 is in threaded connection with the connecting cylinder 402, the cross section of the part of the bolt 2 located in the hollow disc tube body 7 is trapezoidal, slurry can be prevented from flowing into a gap between the sleeve 5 and the outer coil tube 6 along the contact surface of the connecting table 401 and the hollow disc tube body 7 during grouting, the sleeve 5 and the outer coil tube 6 are corroded, the constant resistance provided by the anchor rod is influenced, meanwhile, the annular plate 10 is provided with the reserved hole 11, and the slurry can flow out from the reserved hole 11 even if entering the gap between the sleeve 5 and the outer coil tube 6, and further ensures that the outer coil component is not influenced by the slurry.
The circular plate 10 can be respectively welded with the outer coil pipe 6 and the sleeve 5, and can also be integrated with the outer coil pipe 6 and the sleeve 5, so that the overall strength of the outer coil component can be ensured.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Claims (7)
1. The utility model provides an outer roll-type constant resistance large deformation stock which characterized in that: the anti-theft device comprises an outer rolling component, a free section (8) and an anchor head (9), wherein the outer rolling component is connected with the free section (8), the outer rolling component comprises a connecting part (4), a sleeve (5), an outer rolling pipe (6), a circular plate (10) and a hollow disc pipe body (7), the connecting part (4) is connected with the sleeve (5), the outer rolling pipe (6) is positioned inside the sleeve (5), the outer rolling pipe (6) is connected with the sleeve (5) through the circular plate (10), an outer turning roll is arranged at one end, close to the connecting part (4), of the outer rolling pipe (6), the hollow disc pipe body (7) is positioned inside the outer rolling pipe (6), one end, close to the connecting part (4), of the hollow disc pipe body (7) is tightly attached to the outer turning roll of the outer rolling pipe (6), and one end, close to the connecting part (4), of the hollow disc pipe body (7) protrudes out of the connecting part (4) is located on the sleeve (5), the hollow disc pipe body (7) is in threaded connection with one end of the free section (8), the anchor head (9) is installed at the other end of the free section (8), a central hole communicated with the hollow disc pipe body (7) and the free section (8) is formed in the hollow disc pipe body, the anchor head (9) is provided with a grout discharging hole communicated with the central hole, the connecting part (4) is connected with the tray (3) through the bolt (2), the bolt (2) is provided with the grout injecting hole (1), and one end of the bolt (2) penetrates through the connecting part (4) and the tray (3) and extends into the hollow disc pipe body (7).
2. The outward rolling type constant-resistance large-deformation anchor rod according to claim 1, wherein the connecting part (4) comprises a connecting table (401) and a connecting cylinder (402), the connecting table (401) is connected with the tray (3) through a bolt (2), the outer wall of the connecting cylinder (402) is smooth, threads are reserved on the inner wall of the connecting cylinder, and the sleeve (5) is in threaded connection with the connecting cylinder (402).
3. An outward rolling type constant resistance large deformation anchor rod according to claim 2, characterized in that the partial section of the bolt (2) in the hollow disc tube body (7) is trapezoidal.
4. An externally rolled constant-resistance large-deformation anchor rod according to claim 1, characterized in that the circular plate (10) is welded with the external rolling pipe (6) and the sleeve (5), respectively.
5. The outward rolling type constant-resistance large-deformation anchor rod according to claim 1, characterized in that the circular plate (10), the outward rolling tube (6) and the sleeve (5) are of an integral structure.
6. An outward rolling type constant resistance large deformation anchor rod according to claim 1, characterized in that the circular plate (10) is provided with a reserved hole (11).
7. An outward rolling type constant-resistance large-deformation anchor rod according to claim 1, characterized in that the anchor head (9) is in threaded connection with the free section (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122391606.0U CN216477414U (en) | 2021-09-30 | 2021-09-30 | External-winding constant-resistance large-deformation anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122391606.0U CN216477414U (en) | 2021-09-30 | 2021-09-30 | External-winding constant-resistance large-deformation anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216477414U true CN216477414U (en) | 2022-05-10 |
Family
ID=81437825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122391606.0U Expired - Fee Related CN216477414U (en) | 2021-09-30 | 2021-09-30 | External-winding constant-resistance large-deformation anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216477414U (en) |
-
2021
- 2021-09-30 CN CN202122391606.0U patent/CN216477414U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220510 |