CN216238510U - Bag type centering bracket of anchor cable with enlarged head - Google Patents
Bag type centering bracket of anchor cable with enlarged head Download PDFInfo
- Publication number
- CN216238510U CN216238510U CN202122184718.9U CN202122184718U CN216238510U CN 216238510 U CN216238510 U CN 216238510U CN 202122184718 U CN202122184718 U CN 202122184718U CN 216238510 U CN216238510 U CN 216238510U
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- bag
- centering bracket
- type centering
- anchor cable
- hole
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Abstract
The utility model relates to the technical field of geotechnical engineering, and discloses a bag-type centering bracket of an enlarged head anchor cable, which comprises radial and circumferential pipelines communicated with each other inside, and is in a symmetrical ring shape after being expanded; the middle part of the bag type centering bracket is provided with a central preformed hole for an anchor cable to pass through; one side of the bag-type centering bracket is provided with a slurry inlet hole for connecting a grouting pipe, and the other side of the bag-type centering bracket is uniformly provided with a plurality of slurry outlet holes; and during grouting, slurry enters the bag-type centering bracket from the slurry inlet hole and flows out of the bag-type centering bracket from the slurry outlet hole. The bag type centering bracket is symmetrically provided with a plurality of holes within the range of the outer contour after being expanded, and the holes are in an unsealed state. The capsule type centering bracket provided by the utility model is made of flexible, ultrathin and high-strength materials, is simple to manufacture, has low price, can be manufactured into capsule type centering brackets with corresponding sizes according to different hole sizes, has wide applicability and is convenient to use.
Description
Technical Field
The utility model relates to the technical field of geotechnical engineering, in particular to a bag type centering bracket of an enlarged head anchor cable.
Background
Compared with the traditional anchor cable, the anchor cable with the enlarged head can provide higher bearing capacity, smaller deformation and high reliability, thereby being widely applied to foundation pit support. The pullout resistance of the anchor rope with the enlarged head mainly comprises two parts, wherein one part is the side resistance between the anchoring section and the contact soil body and comprises a common anchoring section and an enlarged head section of the anchor rope; the other part is the end resistance provided by the soil body on the front end surface of the expansion head to the expansion head, and the special stress mode effectively improves the pulling resistance of the anchor cable.
In the construction process, high-pressure cement slurry is generally adopted for repeated spraying and reaming, then a grouting pipe and an anchor rope (anchor rod) are bound together, and the grouting pipe slowly extends into the bottom of a hole to be in place. In the inclined hole, because the diameter of the end part of the anchor hole is increased, after the anchor cable is placed in the inclined hole, the anchor cable sags under the action of self weight and is close to the lower edge of the hole of the expansion section, and the anchor cable is difficult to center. When the subsequent anchor cable is in a working state, the anchor cable is in an eccentric tension state, so that the grouting hardening body can be locally subjected to stress concentration to be damaged and failed. Therefore, auxiliary measures should be used in the construction process to make the anchor cable be located at the center position of the hole of the enlarged end as much as possible.
Chinese patent publication No. CN204530698U discloses an enlarged head anchor cable centering bracket, which provides a centering bracket capable of expanding, contracting and folding, and the centering bracket link mechanism is expanded by stretching the anchor cable steel strand. The centering support structure is too complex, the manufacturing cost is higher due to the metal, and the connecting rod mechanism can not be unfolded in the tensioning process. Accordingly, there is a need for a simple, practical, and inexpensive centering bracket for an enlarged head cable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a capsule type centering bracket of an enlarged head anchor cable, which aims to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
a bag type centering bracket of an anchor cable with an enlarged head comprises a radial pipeline and a circumferential pipeline which are communicated with each other inside, and the bag type centering bracket is in a symmetrical ring shape after being expanded;
the middle part of the bag type centering bracket is provided with a central preformed hole for an anchor cable to pass through;
one side of the bag-type centering bracket is provided with a slurry inlet hole for connecting a grouting pipe, and the other side of the bag-type centering bracket is uniformly provided with a plurality of slurry outlet holes;
and during grouting, slurry enters the bag-type centering bracket from the slurry inlet hole and flows out of the bag-type centering bracket from the slurry outlet hole.
Furthermore, a plurality of holes are symmetrically arranged in the expanded outer contour range of the bag-type centering bracket and are in an unsealed state, so that slurry can flow from one side of the outer part of the bag-type centering bracket to the other side of the outer part of the bag-type centering bracket.
Further, the diameter of the expanded outer edge of the bag-type centering bracket is equal to the diameter of the enlarged hole of the anchor cable.
Furthermore, when the bag-type centering bracket is folded and shrunk to wrap the periphery of the anchor cable, the diameter of the outer edge of the bag-type centering bracket is smaller than the aperture of the anchor cable base hole.
Furthermore, the capsule type centering bracket is a flexible, ultrathin and high-strength material product.
The utility model has the beneficial effects that:
(1) the bag-type centering bracket provided by the utility model is folded and shrunk to wrap the periphery of the anchor cable, the diameter of the outer edge of the bag-type centering bracket is smaller than the aperture of the anchor cable base hole, and the size is smaller, namely the bag-type centering bracket has no influence on the anchor cable extending into the hole bottom.
(2) During grouting, the grout flows into the bag-type centering bracket from the grout inlet hole based on the grouting pipe, the bag-type centering bracket is gradually expanded and expanded, and the subsequent grout flows out of the body from the grout outlet hole on the other side based on the internal pore passage. The process enables the bag type centering support to be always in an unfolded state, so that the anchor cable in the central preformed hole is basically located at the central position of the anchor cable expanding hole, and the effect of restraining and fixing the anchor cable in the middle of the hole is achieved.
(3) The capsule type centering bracket provided by the utility model is made of flexible, ultrathin and high-strength materials, is simple to manufacture, has low price, can be manufactured into capsule type centering brackets with corresponding sizes according to different hole sizes, and has wide applicability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
fig. 1 is a schematic three-dimensional structure diagram of the balloon type centering stent of the present invention when expanded.
Fig. 2 is a schematic three-dimensional view of the balloon-type centering stent of the present invention as viewed from the other side when expanded.
Fig. 3 is a schematic view of the connection between the capsule type centering bracket and the anchor cable according to the present invention.
Fig. 4 is a schematic structural view of the anchor cable extending into the enlarged hole during construction.
Fig. 5 is a schematic diagram of the expansion of the capsule type centering bracket to position the anchor cable during construction.
Fig. 6 is a schematic structural diagram of the enlarged head anchor cable after grouting construction.
In the figure: 1. a balloon centering stent; 2. a central preformed hole; 3. a slurry inlet hole; 4. a slurry outlet; 5. an anchor cable; 6. a grouting pipe; 7. a conventional centering bracket; 8. anchor cable base holes; 9. enlarging holes of the anchor cables; 10. and (4) grouting.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings 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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-5, a capsule centering bracket of an enlarged head anchor cable, wherein the capsule centering bracket 1 contains radial and circumferential pipelines which are communicated with each other inside, and the expanded radial and circumferential pipelines are in a symmetrical ring shape;
the middle part of the bag type centering bracket 1 is provided with a central preformed hole 2 for an anchor cable to pass through;
one side of the bag-type centering bracket 1 is provided with a slurry inlet hole 3 for connecting a grouting pipe, and the other side of the bag-type centering bracket is uniformly provided with a plurality of slurry outlet holes 4;
during grouting, grout enters the bag-type centering bracket 1 from the grout inlet hole and flows out of the bag-type centering bracket from the grout outlet hole 4.
Referring to fig. 1 and 2, there is shown a three-dimensional schematic view of a fully deployed balloon type centering stent 1.
The pulp inlet hole 3 and the pulp outlet hole 4 are respectively arranged at two sides of the bag type centering bracket 1. During construction, the grout inlet hole 3 is connected with the grouting pipe 6, so that one side of the bag-type centering bracket 1, which is provided with the grout inlet hole 3, faces to the orifice, and the side, which is provided with the grout outlet hole 4, faces to the bottom of the hole. This banding orientation of the capsule centering bracket 1 cannot be disturbed.
Preferably, the hole area of the pulp inlet hole 3 is equal to the sum of the hole areas of the pulp outlet holes 4, so that the pulp inlet volume based on the pulp inlet hole 3 is substantially equal to the pulp outlet volume based on the pulp outlet holes 4. Only after the bag type centering bracket 1 is completely unfolded can the serous fluid flow out of the body in a sufficient amount.
Furthermore, a plurality of holes are symmetrically arranged in the outer contour range of the expanded capsule centering stent, as shown in fig. 1 and 2, and the holes are in an unsealed state, so that the slurry can flow from one side of the exterior of the capsule centering stent to the other side of the exterior of the capsule centering stent.
Further, the diameter of the expanded outer edge of the bag-type centering bracket is equal to the diameter of the enlarged hole of the anchor cable, so that the bag-type centering bracket 1 is restrained and the anchor cable is fixed in the middle of the enlarged hole 9 of the anchor cable after being completely expanded.
Further, the bag-type centering bracket 1 is folded and shrunk to wrap the periphery of the anchor cable 5 during construction, and the diameter of the outer edge of the bag-type centering bracket 1 is smaller than the aperture of the anchor cable base hole 8. When the anchor cable stretches into the hole, the bag-type centering support is folded and shrunk to wrap the periphery of the anchor cable, the diameter of the outer edge of the bag-type centering support is smaller than the aperture of the anchor cable base hole, the size is smaller, and the bag-type centering support has no influence on the stretching of the anchor cable into the hole bottom.
Furthermore, the capsule type centering bracket is a flexible, ultrathin and high-strength material product. The bag material of the bag-type centering bracket includes, but is not limited to, geotextile, fiber cloth, glass fiber, resin, glass fiber reinforced resin, aramid fiber, carbon fiber, graphene, carbon element-related material and composite material thereof, polymer, high polymer material, and nanomaterial.
The balloon type centering stent 1 should have sufficient strength so that the balloon type centering stent 1 does not burst or break under the grouting pressure.
The proposed method of use of the balloon centering stent 1 is as follows:
firstly, an anchor cable 5 is sleeved into a central preformed hole 2 of a bag type centering support 1, the bag type centering support 1 is positioned near the tail end of the anchor cable 5, one side of the bag type centering support 1, which is provided with a grout inlet hole 3, faces an orifice, the tail end of a grouting pipe 6 is fixedly connected with the grout inlet hole 3, and the grouting pipe 6 and the anchor cable 5 are bound together; folding and shrinking the bag type centering bracket 1 to wrap the periphery of the anchor cable 5 and simply fixing the bracket; the cable 5 at the cable base hole 8 is still attached with a conventional centering bracket 7.
Secondly, the anchor cable 5 is sequentially inserted into the anchor cable base hole 8 and the anchor cable expanding hole 9 to reach the bottom of the hole, as shown in fig. 4.
And grouting the hole based on the grouting pipe 6, wherein the grout flows into the capsule centering bracket 1 from the grout inlet hole 3 based on the grouting pipe 6, the capsule centering bracket 1 is gradually propped open and expanded, and the subsequent grout flows out of the body from the grout outlet hole 4 on the other side based on an internal pore channel. The process enables the bag type centering bracket 1 to be always in an unfolded state, so that the anchor cable 5 in the central preformed hole 2 is basically located at the central position of the anchor cable expanding hole, and the effect of restraining and fixing the anchor cable 5 in the middle of the hole is achieved, as shown in fig. 5. The grout flows out of the grout outlet 4 to gradually fill the bottom of the hole, and gradually passes through and flows to the other side from one side of the outer part of the bag-type centering bracket 1, and finally the grouting body 10 is used for tightly filling the anchor cable base hole 8 and the anchor cable expanding hole 9, as shown in fig. 6.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an enlarged footing anchor rope's capsule formula centering support which characterized in that: the bag type centering bracket contains a radial pipeline and a circular pipeline which are communicated with each other inside, and the bag type centering bracket is in a symmetrical ring shape after being expanded;
the middle part of the bag type centering bracket is provided with a central preformed hole for an anchor cable to pass through;
one side of the bag-type centering bracket is provided with a slurry inlet hole for connecting a grouting pipe, and the other side of the bag-type centering bracket is uniformly provided with a plurality of slurry outlet holes;
and during grouting, slurry enters the bag-type centering bracket from the slurry inlet hole and flows out of the bag-type centering bracket from the slurry outlet hole.
2. The capsule centering bracket of an enlarged head anchor cable as claimed in claim 1, wherein: the bag-type centering bracket is characterized in that a plurality of holes are symmetrically arranged in the outer contour range after the bag-type centering bracket is expanded, and the holes are in an unsealed state, so that slurry can flow from one side of the outer part of the bag-type centering bracket to the other side of the outer part of the bag-type centering bracket.
3. The capsule centering bracket of an enlarged head anchor cable as claimed in claim 1, wherein: the diameter of the expanded outer edge of the bag-type centering bracket is equal to the diameter of the enlarged hole of the anchor cable.
4. The capsule centering bracket of an enlarged head anchor cable as claimed in claim 1, wherein: when the bag-type centering bracket is folded and shrunk and wrapped on the periphery of the anchor cable, the diameter of the outer edge of the bag-type centering bracket is smaller than the aperture of the anchor cable base hole.
5. The capsule centering bracket of an enlarged head anchor cable as claimed in claim 1, wherein: the capsule type centering bracket is made of flexible materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122184718.9U CN216238510U (en) | 2021-09-10 | 2021-09-10 | Bag type centering bracket of anchor cable with enlarged head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122184718.9U CN216238510U (en) | 2021-09-10 | 2021-09-10 | Bag type centering bracket of anchor cable with enlarged head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216238510U true CN216238510U (en) | 2022-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122184718.9U Expired - Fee Related CN216238510U (en) | 2021-09-10 | 2021-09-10 | Bag type centering bracket of anchor cable with enlarged head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216238510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908757A (en) * | 2022-05-20 | 2022-08-16 | 中建八局第二建设有限公司 | Grouting construction method for anchor cable of deep foundation pit |
-
2021
- 2021-09-10 CN CN202122184718.9U patent/CN216238510U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908757A (en) * | 2022-05-20 | 2022-08-16 | 中建八局第二建设有限公司 | Grouting construction method for anchor cable of deep foundation pit |
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| 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: 20220408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |