CN215669485U - Novel expansion grouting anchor rod - Google Patents
Novel expansion grouting anchor rod Download PDFInfo
- Publication number
- CN215669485U CN215669485U CN202121949045.5U CN202121949045U CN215669485U CN 215669485 U CN215669485 U CN 215669485U CN 202121949045 U CN202121949045 U CN 202121949045U CN 215669485 U CN215669485 U CN 215669485U
- Authority
- CN
- China
- Prior art keywords
- anchor rod
- hole
- sleeve
- rod sleeve
- anchor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004873 anchoring Methods 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a novel expansion grouting anchor rod which is characterized by comprising an anchor rod and an anchor rod sleeve nested outside the anchor rod, wherein the inside of the anchor rod is of a through hole structure, one end of the anchor rod is provided with a thread, the thread is provided with a nut, and the other end of the anchor rod is of a frustum structure; the length of the anchor rod sleeve is smaller than that of the anchor rod, one end of the anchor rod sleeve is provided with an annular baffle, and the other end of the anchor rod sleeve is provided with open slots at intervals; the diameter of the inner hole of the anchor rod sleeve is smaller than the diameter of the anchor rod frustum body. The utility model not only realizes the anchoring function, but also has the internal design of a through hole structure, thereby facilitating grouting and further enhancing the anchoring effect.
Description
Technical Field
The utility model relates to the field of geotechnical engineering support, in particular to a novel expansion grouting anchor rod.
Background
In the excavation process of geotechnical side slopes, foundation pits, tunnel engineering and bridge tunnels related to the field of geotechnical engineering, surrounding rock deformation is obvious under the influence of disturbance such as side slope and foundation pit excavation, tunnel and tunnel excavation and the like. The surrounding rock collapse is prevented from threatening the life safety of personnel, and the construction progress is delayed. When the soil is a harder rock body, the hole wall is smooth, and the expansion anchor rod is easy to slide in the hole and loses the bearing capacity; when most soil qualities of common side slope and foundation pit are soft, the anchor rod is easy to be impacted, a large gap is generated between the expansion anchor rod and the hole wall, and the expansion anchor rod is easy to pull out integrally. Complicated geological conditions have higher requirements on anchor and grouting integration, and anchor rod supporting and grouting are required for side slope, foundation pit, roadway and tunnel supporting.
In order to solve the problems existing in the existing rock-soil anchoring technology, an expansion anchor rod is developed in recent years. The anchor rod sleeve of the existing expansion anchor rod is a steel pipe, and the anchor rod body is processed by deformed steel. The not enough of current stock has been overcome to a certain extent to the inflation stock, but the inflation stock also has following defect: 1. a larger pore exists between the expansion anchor rod and the hole wall, so that the expansion anchor rod is easy to move and has a poor fixing effect. 2. The expansion anchor rod can not reinforce the rock mass around the pore wall, and the expansion anchor rod is easy to pull out. 3. The expansion anchor rod is not tightly combined with the hole wall, so that the breaking force of the expansion anchor rod is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the utility model provides a novel expansion grouting anchor rod.
A novel expansion grouting anchor rod comprises an anchor rod and an anchor rod sleeve nested outside the anchor rod, wherein the inside of the anchor rod is of a through hole structure, one end of the anchor rod is provided with a thread, the thread is provided with a nut, and the other end of the anchor rod is of a frustum structure;
the length of the anchor rod sleeve is smaller than that of the anchor rod, one end of the anchor rod sleeve is provided with an annular baffle, and the other end of the anchor rod sleeve is provided with open slots at intervals; the diameter of the inner hole of the anchor rod sleeve is smaller than the diameter of the anchor rod frustum body;
further, the stock surface is opened there is the stock hole, the stock cover surface is opened has corresponding stock trepanning hole, and stock trepanning hole central point puts the same with stock hole central point, the size in stock trepanning hole is greater than the size in stock hole.
Further, the number of anchor rod holes is at least three, and the number of anchor rod other sleeve holes is at least three.
Further, a gasket is arranged between the annular baffle and the nut.
The utility model has the following beneficial effects:
1. the device has simple structure, convenient operation and low cost. And an inner-outer double-layer structure is adopted, so that the processing is convenient.
2. The setting in stock hole and the anchor bush hole of this device for anchor agent can fill the gap between stock and the hole wall after the slip casting, increases the anchor effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a state diagram of the use of the present invention;
fig. 3 is a cross-sectional view of the present invention.
In the figure: anchor rod 1, anchor rod sleeve 2, 3 threads, 4 nuts, 5 frustum structures, 6 annular baffles, 7 open grooves, 8 anchor rod holes, 9 anchor rod sleeve holes and 10 gaskets.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. 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.
Referring to fig. 1-3, a novel expansion grouting anchor rod comprises an anchor rod 1 and an anchor rod sleeve 2 nested outside the anchor rod 1, wherein the inside of the anchor rod 1 is of a through hole structure, one end of the anchor rod 1 is provided with a thread 3, the thread 3 is provided with a nut 4, and the other end of the anchor rod is of a frustum structure 5;
the length of the anchor rod sleeve 2 is smaller than that of the anchor rod 1, one end of the anchor rod sleeve 2 is provided with an annular baffle 6, and the other end of the anchor rod sleeve 2 is provided with open slots 7 at intervals; the diameter of the inner hole of the anchor rod sleeve is smaller than the diameter of the anchor rod frustum body structure 5;
further, the surface of the anchor rod 1 is provided with an anchor rod hole 8, the surface of the anchor rod sleeve is provided with a corresponding anchor rod sleeve hole 9, the center position of the anchor rod sleeve hole 9 is the same as that of the anchor rod hole 8, and the size of the anchor rod sleeve hole 9 is larger than that of the anchor rod hole 8.
Further, the number of the anchor rod holes 8 is at least three, and the number of the anchor rod sleeve holes 9 is at least three.
Further, a gasket 10 is arranged between the ring-shaped baffle plate and the nut.
The use method of the device is as follows:
when the rock mass drilling anchor hard to the geology, open in advance and slightly be greater than the hole of stock cover 2, with this device whole insert this hole in, overstock ring baffle 6 through screwing up nut 5 and drive stock 1 along axial displacement, the displacement of stock 1 makes open slot 7 on the stock cover 2 prop open by frustum body structure 5 and become the claw form, pricks into the cliff at this moment in, realizes firm effect.
Under the condition that the hole wall is soft and a large number of cracks exist, the anchor rod sleeve 2 cannot be well combined with the hole. After accomplishing above-mentioned work, pressure pipe and the butt joint of stock 1 screw thread through the slip casting machine, the quick grout that congeals of preferred early strength, the slip casting machine pours into this thick liquid into the through-hole structure of stock 1 according to certain pressure into, and the thick liquid permeates the crack of pore wall through the other end of stock 1 and stock hole 8, stock cover hole 9, makes the stock cover 2 more firm with being connected of pore wall, has improved the holistic anchor degree of rock mass. The gasket 10 between the nut 4 and the annular baffle 6 not only has the effect of reinforcing the knob of the nut 4, but also prevents the internal slurry from seeping out.
Claims (4)
1. The novel expansion grouting anchor rod is characterized by comprising an anchor rod and an anchor rod sleeve embedded outside the anchor rod, wherein the inside of the anchor rod is of a through hole structure, one end of the anchor rod is provided with a thread, the thread is provided with a nut, and the other end of the anchor rod is of a frustum structure; the length of the anchor rod sleeve is smaller than that of the anchor rod, one end of the anchor rod sleeve is provided with an annular baffle, and the other end of the anchor rod sleeve is provided with open slots at intervals; the diameter of the inner hole of the anchor rod sleeve is smaller than the diameter of the anchor rod frustum body.
2. A novel expansion grouting anchor rod as claimed in claim 1, wherein the surface of said anchor rod is provided with an anchor rod hole, the surface of said anchor rod sleeve is provided with a corresponding anchor rod sleeve hole, the center position of said anchor rod sleeve hole is the same as the center position of said anchor rod hole, and the size of said anchor rod sleeve hole is larger than that of said anchor rod hole.
3. A novel expansion grouting anchor as claimed in claim 1, wherein a spacer is fitted between the annular baffle and the nut.
4. A novel expandable injection bolt according to claim 2 wherein said bolt holes are at least three in number and said bolt additional holes are at least three in number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121949045.5U CN215669485U (en) | 2021-08-19 | 2021-08-19 | Novel expansion grouting anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121949045.5U CN215669485U (en) | 2021-08-19 | 2021-08-19 | Novel expansion grouting anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215669485U true CN215669485U (en) | 2022-01-28 |
Family
ID=79954133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121949045.5U Expired - Fee Related CN215669485U (en) | 2021-08-19 | 2021-08-19 | Novel expansion grouting anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215669485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635438A (en) * | 2022-03-30 | 2022-06-17 | 山东建筑大学 | Ecological retaining wall based on self-locking expansion effect and construction method thereof |
-
2021
- 2021-08-19 CN CN202121949045.5U patent/CN215669485U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635438A (en) * | 2022-03-30 | 2022-06-17 | 山东建筑大学 | Ecological retaining wall based on self-locking expansion effect and construction method thereof |
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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: 20220128 |