CN202416314U - Grouting bag type enlarged-end anchor rod - Google Patents
Grouting bag type enlarged-end anchor rod Download PDFInfo
- Publication number
- CN202416314U CN202416314U CN 201120540900 CN201120540900U CN202416314U CN 202416314 U CN202416314 U CN 202416314U CN 201120540900 CN201120540900 CN 201120540900 CN 201120540900 U CN201120540900 U CN 201120540900U CN 202416314 U CN202416314 U CN 202416314U
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- China
- Prior art keywords
- slip casting
- anchor pole
- casting bag
- steel pipe
- enlarges
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- Expired - Lifetime
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Abstract
The utility model provides a grouting bag type enlarged-end anchor rod. The grouting bag type enlarged-end anchor rod comprises a steel pipe anchor rod and a grouting pipe, wherein the steel pipe anchor rod has a hollow structure; a grouting bag is arranged at the front end of the steel pipe anchor rod; and grouting holes are formed in the steel pipe anchor rod which is positioned in the grouting bag. The enlargement of an end part of the anchor rod can be effectively ensured, so that the anchoring capacity and reliability of the anchor rod can be effectively increased.
Description
Technical field
The utility model relates to the geotechnical anchor engineering technical field, is specifically related to a kind of slip casting bag formula and enlarges the termination anchor pole.
Background technology
In the anchoring engineering; At first in rock-soil layer, adopt common rig pore-forming; Again the steel pipe anchor pole is pushed in the boring, in boring, inject slurries such as concrete, treat can anchor pole be fixed in the rock-soil layer after slurry solidifies through being arranged on the outside Grouting Pipe of steel pipe anchor pole.In order to reinforce the firm performance of anchor pole in rock-soil layer, the technician tends at the bigger supporting body of the leading section setting of anchor pole, forms the termination and enlarges anchor pole, and bigger bearing capacity can be provided.This technology has obtained large development in recent years, is 200910022904.3 granted patent like application number, discloses " a kind of high-pressure jet grouting enlarged footing anchor rod and job practices thereof "; Application number is 03159295.3 granted patent in addition; " reaming bit and the counter-boring techniques of anchor pole, anchor cable, stake in a kind of civil engineering " disclosed; But these termination point of anchor rod dilation technique all need to enlarge through special reaming equipment the boring of anchor pole end; And the hole quality of bellend head position receives expanding method, hole wall rock soil medium from the surely influence of factors such as characteristic, hole depth; The mechanical characteristic of geotechnical body is poor more, the boring hole depth is big more, and the quality of pore-forming just is difficult to guarantee, thereby can causes the bearing capacity of actual anchor pole to be lower than desired value.
Summary of the invention
The technical problem that the utility model will solve provides and a kind ofly can effectively guarantee to enlarge the termination point of anchor rod position, thereby increases the anchoring ability of anchor pole and the slip casting bag formula expansion termination anchor pole of reliability.
For solving the problems of the technologies described above; The slip casting bag formula of the utility model enlarges the termination anchor pole, comprises steel pipe anchor pole, Grouting Pipe, and its special special character is: said steel pipe anchor pole is a hollow structure; Its leading section is provided with slip casting bag, is positioned on the inner steel pipe anchor pole of said slip casting bag to offer injected hole.
As preferably, said slip casting bag is made up of the front end-plate that is connected successively, elasticity external capsule and end plate, and said front end-plate is fixedly connected with said steel pipe anchor pole with end plate, and it is peripheral that said elasticity external capsule is coated on said steel pipe anchor pole.
Further preferred, the said injected hole outside is set with elasticity and ends the slurry cover.When carrying out high-pressure slip-casting in to slip casting bag through the steel pipe anchor pole, because grouting pressure is bigger in the pipe, ends the slurry cover to external compression elasticity and cause between itself and steel pipe and produce the slit, slurries flow into slip casting bag from the slit; When stopping slip casting, because the slip casting bag internal pressure is bigger, extruding elasticity is ended the slurry cover to inside, causes elasticity to end the slurry cover and is adjacent to the steel pipe anchor pole, can stop slurries in the steel pipe anchor pole, to flow into.
Further preferred, be connected with stack on the said slip casting bag, said stack one end is connected with slip casting bag, and the other end is connected with the rock-soil layer outside.
Further preferred, said stack is connected with slip casting bag inside after passing end plate.
Further preferred, series connection is provided with a plurality of slip casting bag on the said steel pipe anchor pole, is positioned on the inner steel pipe anchor pole of each slip casting bag all to offer injected hole.When rock-bolt length is bigger, or bearing capacity so is provided with multistage slip casting bag when not enough, forms catenate slip casting bag formula and enlarges the termination anchor pole, can further improve the bearing capacity of single anchor pole.
The utility model is through adding the elasticity slip casting bag at the steel pipe termination point of anchor rod; In slip casting bag, carry out slip casing by pressure again; Under the grouting pressure effect, make the slip casting bag expansion of constantly expanding, thereby need not, can form the bellend head position of anchor pole through special reaming equipment.The slip casting bag of front end enlarges resistance increasing, its steadiness reinforcement that receives the place ahead geotechnical body when causing anchor pole to be pulled out on the one hand; On the other hand; Because the compacted effect of expansion of slip casting bag; The rock mechanical characteristic is improved to some extent around making, thereby can effectively improve supporting capacity and the steadiness of anchor pole in ground.And; It is simple, with low cost that this slip casting bag formula enlarges the termination anchor structure, and construction quality does not receive the influence of rock-bolt length, do not receive the influence of stratum self-stability ability; Bellend head shapes that forms and quality are easy to guarantee, are particularly useful in stratum such as weak ground, applying.
Description of drawings
Fig. 1 enlarges the structural representation of termination anchor pole for the slip casting bag formula.
Fig. 2 is the structure for amplifying sketch map at injected hole position among Fig. 1.
Fig. 3 is the structural representation that the slip casting bag formula of a plurality of slip casting bag formation enlarges the termination anchor pole.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the slip casting bag formula expansion termination anchor pole of the utility model is done further explain.
The slip casting bag formula enlarges the termination anchor pole, comprises steel pipe anchor pole 1, Grouting Pipe 2, and steel pipe anchor pole 1 is a hollow structure; Can be used as to slip casting bag mesohigh grouting pipe; Steel pipe anchor pole 1 leading section is provided with slip casting bag 3, and slip casting bag 3 is made up of the front end-plate that is connected successively 4, elasticity external capsule 5 and end plate 6, and elasticity external capsule 5 is coated on steel pipe anchor pole 1 periphery; Front end-plate 4 is connected with steel pipe anchor pole 1 through the form of welding, being threaded or pushing with end plate 6; And guarantee that slip casting bag 3 has excellent sealing performance, and being positioned on the inner steel pipe anchor pole 1 of slip casting bag 3 and offering injected hole 7, injected hole 7 outsides are set with elasticity and end slurry cover 8; Be connected with stack 9 on the slip casting bag 3; Stack 9 one ends are connected with slip casting bag 3 inside; The rock-soil layer external communications of the other end and boring, series connection is provided with two slip casting bag 3 on the steel pipe anchor pole 1, is positioned on the inner steel pipe anchor pole 1 of each slip casting bag 3 all to offer injected hole 7.
When using the utility model, in rock-soil layer, adopt common rig pore-forming earlier, the steel pipe anchor pole that will be provided with slip casting bag 3 then pushes in the boring; Make slip casting bag 3 place the precalculated position, the steel pipe anchor pole 1 slowly slip casting in slip casting bag 3 through hollow again, treat that stack 9 mouths of pipe have slurries to flow out after; The mouth of pipe of stack 9 is blocked, slowly strengthen grouting pressure again, carry out slip casing by pressure; After grouting pressure and grouting amount meet design requirement, stop slip casting, the stifled steel pipe anchor pole of plug; In boring 10, add slurries through Grouting Pipe 2 then.After treating that the slurries of being annotated in the slip casting bag 3 solidify, promptly form the slip casting bag formula and enlarge the termination anchor pole.When the slip casting bag formula of use the utility model enlarges the termination anchor pole, need not avoid in weak rocks soil layer and deep boring, enlarging the enforcement defective of caving in and causing of termination pore-forming in the reaming in advance of bellend head position.When the anchor pole design length bigger; Or bearing capacity is provided with multistage slip casting bag when not enough, forms catenate slip casting bag formula and enlarges the termination anchor pole; Thereby further improve the bearing capacity of single anchor pole; The shape of slip casting bag can combine strata structure to be provided with in advance, can form various ways such as cylindrical, conical, turbination, spindle so that carry out slip casting bag after the slip casing by pressure, has further improved the bellend head position and the binding ability of geotechnical body on every side.
Claims (6)
1. a slip casting bag formula enlarges the termination anchor pole; Comprise steel pipe anchor pole (1), Grouting Pipe (2); It is characterized in that: said steel pipe anchor pole (1) is a hollow structure, and its leading section is provided with slip casting bag (3), is positioned on the inner steel pipe anchor pole (1) of said slip casting bag (3) to offer injected hole (7).
2. slip casting bag formula according to claim 1 enlarges the termination anchor pole; It is characterized in that: said slip casting bag (3) is made up of the front end-plate that is connected successively (4), elasticity external capsule (5) and end plate (6); Said front end-plate (4) is fixedly connected with said steel pipe anchor pole (1) with end plate (6), and said elasticity external capsule (5) is coated on said steel pipe anchor pole (1) periphery.
3. slip casting bag formula according to claim 1 and 2 enlarges the termination anchor pole, it is characterized in that: said injected hole (7) outside is set with elasticity and ends slurry cover (8).
4. slip casting bag formula according to claim 1 and 2 enlarges the termination anchor pole, and it is characterized in that: it also is provided with stack (9), and said stack (9) one ends are connected with slip casting bag (3), and the other end is connected with the rock-soil layer outside.
5. slip casting bag formula according to claim 4 enlarges the termination anchor pole, it is characterized in that: said stack (9) passes end plate (6) back and is connected with slip casting bag (3) inside.
6. slip casting bag formula according to claim 1 and 2 enlarges the termination anchor pole, it is characterized in that: said steel pipe anchor pole (1) is gone up series connection and is provided with a plurality of slip casting bag (3), is positioned on the inner steel pipe anchor pole (1) of each slip casting bag (3) all to offer injected hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120540900 CN202416314U (en) | 2011-12-21 | 2011-12-21 | Grouting bag type enlarged-end anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120540900 CN202416314U (en) | 2011-12-21 | 2011-12-21 | Grouting bag type enlarged-end anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202416314U true CN202416314U (en) | 2012-09-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120540900 Expired - Lifetime CN202416314U (en) | 2011-12-21 | 2011-12-21 | Grouting bag type enlarged-end anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202416314U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239570A (en) * | 2015-09-30 | 2016-01-13 | 常州大学怀德学院 | Multi-bag type joint-expanded anchor rod and foundation pit supporting construction method |
| CN105863694A (en) * | 2016-04-21 | 2016-08-17 | 山东科技大学 | Anchor rod end cavity enlarging device and construction method thereof |
| CN106869136A (en) * | 2017-02-15 | 2017-06-20 | 常州工学院 | One kind expands end formula soil bolt |
| CN109595020A (en) * | 2018-12-30 | 2019-04-09 | 浙江工业大学 | A kind of slip casting bellows enlarged footing anchor pole and application method for tunnel correction |
| CN111335921A (en) * | 2020-02-28 | 2020-06-26 | 东南大学 | Automatic grouting device for mounting single-point displacement meter and sectional grouting mounting method |
-
2011
- 2011-12-21 CN CN 201120540900 patent/CN202416314U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239570A (en) * | 2015-09-30 | 2016-01-13 | 常州大学怀德学院 | Multi-bag type joint-expanded anchor rod and foundation pit supporting construction method |
| CN105863694A (en) * | 2016-04-21 | 2016-08-17 | 山东科技大学 | Anchor rod end cavity enlarging device and construction method thereof |
| CN105863694B (en) * | 2016-04-21 | 2017-11-14 | 山东科技大学 | Chamber device and its construction method are expanded in a kind of anchor pole end |
| CN106869136A (en) * | 2017-02-15 | 2017-06-20 | 常州工学院 | One kind expands end formula soil bolt |
| CN109595020A (en) * | 2018-12-30 | 2019-04-09 | 浙江工业大学 | A kind of slip casting bellows enlarged footing anchor pole and application method for tunnel correction |
| CN109595020B (en) * | 2018-12-30 | 2023-09-29 | 浙江工业大学 | Grouting bag type enlarged head anchor rod for tunnel deviation correction and use method |
| CN111335921A (en) * | 2020-02-28 | 2020-06-26 | 东南大学 | Automatic grouting device for mounting single-point displacement meter and sectional grouting mounting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |