CN201661305U - Friction type anchor rod capable of being recovered - Google Patents
Friction type anchor rod capable of being recovered Download PDFInfo
- Publication number
- CN201661305U CN201661305U CN2010201723236U CN201020172323U CN201661305U CN 201661305 U CN201661305 U CN 201661305U CN 2010201723236 U CN2010201723236 U CN 2010201723236U CN 201020172323 U CN201020172323 U CN 201020172323U CN 201661305 U CN201661305 U CN 201661305U
- Authority
- CN
- China
- Prior art keywords
- callable
- center
- shell
- rock bolt
- pole
- 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
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a friction type anchor rod capable of being recovered in the field of geotechnical engineering anchoring, which comprises three parts: a center rod (1), a case (2) and a sleeve hoop (3). Because a structure of the case (2) is arranged outside the center rod (1) of the friction type anchor rod capable of being recovered of the utility model, and the center rod (1) is tightly connected with the case (2) through the sleeve hoop (3) when the anchor rod is used, so the bearing force provided by a soil body can be transmitted to the center rod (1) through the case (2), the center rod (1) can be disconnected from the case (2) through releasing the sleeve hoop (3) when the anchor rod is recovered, the connection intensity between the case (2) and the soil body can be reduced through recovering the center rod (1), further, the case (2) can be recovered, no residual is remained in the soil after the recovery is completed, the environment protection benefits are good, in addition, the lateral resistance of the anchor rod can be put into pull play, the recovery rate is high, the anchor rod can be repeatedly used, the cost is low, and the quality of the anchor rod is reliable.
Description
Technical field
The present invention relates to geotechnical engineering anchoring field.
Background technology
Along with engineering construction developing rapidly of underground space development particularly, demand to anchor pole in engineering constructions such as bracing of foundation pit, slope retaining increases day by day, and cause contiguous place underground space development difficulty owing to often leave over the body of rod after the anchor pole use at present in adjacent domain, limited the application of anchor pole to a great extent.In order to realize the recovery of anchor bar body, existing callable anchor pole mainly contains construction technologies such as various anchor poles by the mechanical whorl connection, the detachable anchor pole of U type.The nearest documents of callable anchor pole is a Chinese patent 01234117.7, this technology and other recoverable anchor rod technology all are to adopt the link technique of screw thread-like, by deviating from the never recyclable body of the callable beaer of anchor pole after the feasible use of the mechanical movement of the body of rod, thereby reach the purpose that reclaims the body of rod, there is following defective in this technology: one, with recyclable body and can not recovery body connect, manufacture craft is complicated, the cost height by mechanical connection manner for prior art; They are two years old, behind the anchor bolt construction, because anchor pole is difficult to keep original linear state in drilling construction, deadweight and loading process, thereby the motion modes such as rotation of anchor pole when reclaiming is difficult to realize, engineering experience confirms, when anchor pole is longer (as the soil nailing in the present soil nailing wall foundation pit support), be difficult to realize the purpose that reclaims, so such callable anchor pole is difficult to wide popularization and application in field of civil engineering.The second class recoverable anchor rod is the detachable anchor pole of U-shaped, this technology is that high strength steel strand is curved U-shaped, then U shaped steel twisted wire is positioned in the armature boring, is used to complete the back by discharging an end of U-shaped steel strand, and apply pulling force at the other end, steel strand are pulled out recovery by force.The shortcoming of this technology is: the first, this technology in use, the suffered distributed force of steel strand direction along the line is little and inhomogeneous; The second, pulling force is big during recovery, and recovery difficult is big; The 3rd, this technique building technology complexity, cost height.Because above defective though this technology has occurred for many years, still is difficult to promote so far.I have proposed callable end before this and have held formula anchor pole technology, propose to reclaim to hold easily to hold formula anchor pole recovery scheme, but in soft clay area, hold the end load that holds the formula anchor pole limited, and at this problem, the inventor proposes callable friction rock bolt and solved.
The content of invention
First purpose of the present invention is to provide a kind of callable friction rock bolt, this callable friction rock bolt can provide bigger anchored force, and can realize the recycling of anchor bar body, reduce the influence of anchor pole to peripheral underground space development, enlarge the application of anchor pole, reduce engineering cost significantly.
This callable friction rock bolt comprises center-pole, shell and cuff three parts composition, and center-pole is positioned at enclosure, and cuff is positioned at the shell outside, and cuff is can be with shell and the close-connected member of center-pole.
In above-mentioned callable friction rock bolt, above-mentioned cuff can be reinforcing bar or the rope that spirality is around in the shell outside.
In above-mentioned callable friction rock bolt, above-mentioned cuff can also be that a series of C shape lock tubes add center locking bar composition, and C shape lock tube is provided with 2 lockholes, and the center locking bar can pass the lockhole on the C shape lock tube.
In above-mentioned callable friction rock bolt, above-mentioned shell can be a C shape hollow hoses.
Second purpose of the present invention is to provide a kind of callable friction rock bolt job practices, this callable friction rock bolt job practices can realize the installation and recovery construction of callable friction rock bolt smoothly, reduces difficulty of construction and engineering cost.
This callable friction rock bolt job practices may further comprise the steps:
A) utilize cuff that shell is closely linked to each other with center-pole, finish the manufacturing of callable friction rock bolt.
B) callable friction rock bolt is inserted the soil body.
C) after being used to complete, cuff is unclamped, the active force between shell and center-pole is reduced.
D) extract center-pole out, extract at needs under the situation of shell, can after center-pole is extracted out, extract shell.
Because the center-pole of callable friction rock bolt of the present invention has shell mechanism outward, when anchor pole uses, by cuff center-pole closely is connected with shell, the bearing capacity that makes the soil body provide is passed to center-pole by shell, when anchor pole reclaims, can make between center-pole and the shell and throw off by unclamping cuff, can remove being connected between shell and the soil body by the collection centre bar, and then reclaim shell, after construction is finished, do not have residual in the soil, can give full play to the anchor pole collateral resistance, rate of recovery height, anchor pole is reusable, cost is low, the anchor pole reliable in quality.
Description of drawings
Fig. 1 is a callable friction rock bolt structural representation of the present invention.
Fig. 2 is C shape lock tube and a center locking bar structural representation in the callable friction rock bolt of the present invention.
The specific embodiment
As of the present invention as shown in Figure 1 callable friction rock bolt and first embodiment of job practices, in the construction first step, at first make callable friction rock bolt, selecting external diameter for use is that the welded tube of 48mm is as center-pole (1), selecting internal diameter for use is that the polyethylene pipe of 48mm is as shell (2), when making callable friction rock bolt, one side of shell (2) is cut off, the cross section that makes shell (2) is the C molded cannula of opening, then shell (2) is enclosed within center-pole (1) outside, wrap shell (2) with the reinforcing bar spirality of diameter 6.5mm afterwards, form cuff (3), shell (2) is closely contacted with center-pole (1), make shell (2) and center-pole (1) form an integral body by frictional force, and make cuff (3) extend to operating surface, thereby finish the manufacturing of callable friction rock bolt of the present invention.Finish first embodiment first step of the present invention, enter second step of first embodiment of the present invention.Can by shake into mode callable friction rock bolt is inserted the soil body, also can be by first prebored hole, then callable friction rock bolt is put into the hole, in the hole, inject cement paste afterwards and form anchor bar body, can also directly callable friction rock bolt of the present invention be pressed into the soil body by the static pressure mode.After callable friction rock bolt of the present invention is inserted the soil body, improve frictional force between the callable friction rock bolt of the present invention and the soil body as need, can pass through central hole structure slip casting in the soil body of center-pole (1), to improve the anchor pole bearing capacity.Finish second step of first embodiment of the present invention, enter the 3rd step of the first embodiment of the present invention.After callable friction rock bolt of the present invention is used to complete, such as in the bracing of foundation pit engineering, during pit backfill, the effect of anchor pole has been finished, and callable friction rock bolt of the present invention can be reclaimed, when reclaiming, at first at operating surface position drawing cuff (3), because of cuff (3) is around the spiral-shaped structure in shell (2) outside, under the effect of pulling capacity, just can extract behind cuff (3) cutting soil in the operating surface position.After cuff (3) was extracted, the active force between shell (2) and the center-pole (1) reduced significantly.Finish the 3rd step of first embodiment of the present invention, enter the 4th step of the first embodiment of the present invention.After previous step was finished suddenly, the frictional force between center-pole (1) and the shell (2) was very little, can and extract center-pole (1) in the drawing of operating surface position.As requirement of engineering or in order to save cost, after center-pole (1) is extracted, shell (2) can move to the inside, therefore active force between the shell (2) and the soil body reduces significantly, so can by drawing shell (2) be extracted in the operating surface position, thereby finish present embodiment, finish the installation and recovery construction of callable friction rock bolt of the present invention.
As of the present invention as Fig. 1 and callable friction rock bolt shown in Figure 2 and second embodiment of job practices thereof, similar substantially to first above-mentioned embodiment, difference is, in the present embodiment, cuff (3) is made up of with center locking bar (5) C shape lock tube (4) as shown in Figure 2, C shape lock tube (4) is provided with 2 lockholes (6), and center locking bar (5) can pass lockhole (6).The first step at above-mentioned first embodiment, after on shell (2) being enclosed within center-pole (1), the C shape lock tube (4) that adopts internal diameter to be slightly less than shell (2) external diameter is enclosed within shell (2) outside, by stretch-draw C shape lock tube (4), shell (2) is closely contacted with center-pole (1), after finishing, stretch-draw makes 2 lockholes (6) alignment of C shape lock tube (4), and center locking bar (5) passed through lockhole (6), a plurality of C shape lock tubes (4) can be set, the end of center locking bar (5) is extended to operating surface, thereby finish the manufacturing of the callable friction rock bolt in the present embodiment.In the 3rd step of first above-mentioned embodiment, can directly remove C shape lock tube (4) to the constraint of shell (2) by extracting center locking bar (5) with center-pole (1) at the operating surface place, make the frictional force between shell (2) and the center-pole (1) very little.Other steps are with first above-mentioned embodiment.
This patent includes but not limited to other job practicess of the alternative use of professional person in this area.
Claims (4)
1. callable friction rock bolt, it is characterized in that this callable friction rock bolt comprises center-pole (1), shell (2) and cuff (3) three parts composition, center-pole (1) is positioned at shell (2) inside, cuff (3) is positioned at shell (2) outside, and cuff (3) is can be with shell (2) and the close-connected member of center-pole (1).
2. callable friction rock bolt according to claim 1 is characterized in that in above-mentioned callable friction rock bolt, and above-mentioned cuff (3) can be reinforcing bar or the rope that spirality is around in shell (2) outside.
3. callable friction rock bolt according to claim 1, it is characterized in that in above-mentioned callable friction rock bolt, above-mentioned cuff (3) can be that a series of C shape lock tubes (4) add center locking bar (5) composition, C shape lock tube (4) is provided with 2 lockholes (6), and center locking bar (5) can pass the lockhole (6) on the C shape lock tube (4).
4. callable friction rock bolt according to claim 1 is characterized in that in above-mentioned callable friction rock bolt above-mentioned shell (2) can be a C shape hollow hoses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201723236U CN201661305U (en) | 2010-04-27 | 2010-04-27 | Friction type anchor rod capable of being recovered |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201723236U CN201661305U (en) | 2010-04-27 | 2010-04-27 | Friction type anchor rod capable of being recovered |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661305U true CN201661305U (en) | 2010-12-01 |
Family
ID=43231720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201723236U Expired - Fee Related CN201661305U (en) | 2010-04-27 | 2010-04-27 | Friction type anchor rod capable of being recovered |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661305U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235005A (en) * | 2010-04-27 | 2011-11-09 | 张继红 | Recyclable friction type anchor rod and construction method thereof |
| CN102733385A (en) * | 2012-05-09 | 2012-10-17 | 中国京冶工程技术有限公司 | Fully-recycled body expanding anchor rod and construction method for anchoring ground using same |
| CN103290843A (en) * | 2013-06-04 | 2013-09-11 | 北京工业大学 | Pre-stressed pressure-type anti-floating anchor with spiral stirrup |
-
2010
- 2010-04-27 CN CN2010201723236U patent/CN201661305U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235005A (en) * | 2010-04-27 | 2011-11-09 | 张继红 | Recyclable friction type anchor rod and construction method thereof |
| CN102733385A (en) * | 2012-05-09 | 2012-10-17 | 中国京冶工程技术有限公司 | Fully-recycled body expanding anchor rod and construction method for anchoring ground using same |
| CN102733385B (en) * | 2012-05-09 | 2014-11-26 | 中国京冶工程技术有限公司 | Fully-recycled body expanding anchor rod and construction method for anchoring ground using same |
| CN103290843A (en) * | 2013-06-04 | 2013-09-11 | 北京工业大学 | Pre-stressed pressure-type anti-floating anchor with spiral stirrup |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3147410B1 (en) | Construction method and structure of pressure dispersing expansion head anchor rod | |
| CN101994316A (en) | Recyclable composite anchor rod and construction method thereof | |
| CN111005376A (en) | Full-assembly pressure-bearing type variable-diameter steel reinforcement cage enlarged footing anchor pile system | |
| CN102051880B (en) | Detachable anchor | |
| CN103410543A (en) | Pressure yielding internally-grouted anchor cable | |
| CN104532860B (en) | Recoverable soil nail | |
| CN107178100A (en) | A kind of soft soil foundation basement anti-floating system and its construction technology | |
| CN102127911A (en) | Recoverable composite anchor rod and construction method thereof | |
| CN201924356U (en) | Detachable anchor rod | |
| CN201661305U (en) | Friction type anchor rod capable of being recovered | |
| CN101949151A (en) | Recyclable locking anchor rod and construction method thereof | |
| CN102235004A (en) | Recyclable end-bearing friction-type anchor rod and constructing method thereof | |
| CN102392444A (en) | Easily-recycled anchor rod device and recycling method | |
| CN206521873U (en) | A kind of reducing steel reinforcement cage and its enlarging anchor rod or pile foundation | |
| CN103806446B (en) | Internally-supporting expansion type anchor rod | |
| CN106836217A (en) | A kind of construction method of expansion end formula soil bolt or soil nailing | |
| WO2013089466A1 (en) | Method and apparatus for pouring bonding filler in a perforation expansion portion for enhancing the support force of a pile or tensile member | |
| CN104727322B (en) | One is utilized steel-pipe pile fixing anchor bar and callable device and construction method | |
| CN201660890U (en) | Recoverable end-bearing friction anchor rod | |
| CN201661304U (en) | Recoverable end support type anchor rod | |
| CN102235005B (en) | Recyclable friction type anchor rod and construction method thereof | |
| CN101798811A (en) | Recyclable end-bearing anchor rod | |
| CN106088088A (en) | The stress decentralized stiffening pile of recyclable dowel and construction method thereof | |
| CN201801863U (en) | Recyclable locking type anchor | |
| CN201835279U (en) | Recyclable composite anchor rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Changkai Geotechnical Engineering Co., Ltd. Assignor: Zhang Jihong Contract record no.: 2011310000131 Denomination of utility model: Recyclable friction type anchor rod and construction method thereof Granted publication date: 20101201 License type: Exclusive License Record date: 20110808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20180427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |