CN202247873U - Detachable recoverable anchor rod - Google Patents
Detachable recoverable anchor rod Download PDFInfo
- Publication number
- CN202247873U CN202247873U CN2011200645573U CN201120064557U CN202247873U CN 202247873 U CN202247873 U CN 202247873U CN 2011200645573 U CN2011200645573 U CN 2011200645573U CN 201120064557 U CN201120064557 U CN 201120064557U CN 202247873 U CN202247873 U CN 202247873U
- Authority
- CN
- China
- Prior art keywords
- intermediate plate
- anchor
- spring
- steel strand
- anchor ring
- 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
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 239000004568 cement Substances 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 abstract description 12
- 239000002689 soil Substances 0.000 abstract description 8
- 239000011435 rock Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 4
- 230000009993 protective function Effects 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
An anchor rod capable of completing steel strand recovery after being used in a building foundation pit supporting project. After holes are formed in rock and soil bodies, steel strands are anchored tightly by utilizing anchoring nodes in cement grouting bodies in the holes, so that the bearing function is completed. And after the supporting function is completed, the safety device can be opened to separate the steel strand from the anchorage device, and the steel strand is pulled out of the soil body to complete recovery. One anchor rod can be provided with a plurality of anchor nodes, and the anchor nodes at different positions can adapt to the deformation and stress conditions of the steel strand through the setting of the adjusting device inside the anchor nodes. The middle anchoring node is an elastic node, the stress sequence of the anchoring nodes can be adjusted, and the anchoring effect is sequentially exerted from the end node to the middle node. If a plurality of nodes are arranged, the anchor rod is a pressure dispersion type anchor rod. But the difference is that a plurality of steel strands can be simultaneously tensioned, the stress states of the steel strands are consistent, and the technical problem that the stress levels of the steel strands of the current pressure dispersion type anchor rod are inconsistent is solved.
Description
Technical field
The utility model relates in the field of civil engineering foundation pit supporting project, is used for a kind of anchor formula recoverable anchor rod of tearing open of going along with sb. to guard him soil stabilization and after a protective function is accomplished, can reclaim rock, soil body steel strand.
Technical background
At present; In the pattern foundation pit supporting structure of construction work and other civil engineering; When using bolt support; Steel strand or reinforcing bar are retained in rock, the soil body after protective function is accomplished usually, and this has not only caused the waste of steel, and even more serious be that these steel are retained in and can cause adverse consequences (excavation is difficult, the construction water-stop curtain is difficult, piling is difficult) in the ground to the later development in peripheral plot.And steel are retained in the ground, also be with current energy-saving consumption-reducing, to reduce discharging the Scientific Outlook on Development such as falling dirt contrary.
In order to overcome the unrenewable deficiency of existing bolt support, the swinging of employing was arranged in the past, hale the inefficacy formula or tear the recoverable anchor rod of anchor formula open.The steel strand spiral clot that helicoid recoverable anchor rod reclaims, post-processing difficulty is big; There is following problem in the recoverable anchor rod of haling the inefficacy formula on principle: the raising of anti-pulling of anchor bar design load is a contradiction with the reduction of reclaiming pulling force.High requirement such as the existing anchor type of tearing open mainly is to adopt dismantle anchoring nut or the rotation rigidity body of rod of special instrument that anchoring nut and the body of rod are come off, and reclaims thereby accomplish, and the diameter that this need anchor rod anchored body is bigger.
The utility model content
The utility model provides a kind of new callable technology and worker's method, belongs to the ground tackle formula that pitches, and after the completion of pattern foundation pit supporting structure function, can effectively reclaim steel strand or reinforcing bar in the ground, reaches that steel do not have the purpose of leaving in rock, the soil body.
The utility model solves the technical scheme that its technical problem adopted: behind pore-forming in the precalculated position of rock, the soil body; The steel strand that will have one or several special anchorage node are inserted in the hole; Have separation sleeve on the steel strand outside the anchorage node; Inject cement paste or cement mortar afterwards, promptly form anchor pole after slurries solidify.Anchorage node way on the steel strand is following: the steel strand that are arranged in parallel are terminal and install respectively other position that anchorage node need be set at many, fixing special anchor ring, and anchor ring is fixed together these several steel strand.In the outside of anchor ring the hollow cylinder of a sealing is installed, is promptly formed special anchorage node after the slit between cylinder and steel strand is sealed with waterproof gasket cement.Except that the anchorage node of least significant end, other anchorage node is elastic panel nodes, can regulate the force level that receives of each section steel strand.
Being connected of steel strand and anchor ring fixing realizes that through special intermediate plate special intermediate plate does not have auto-lock function, the contact surface between itself and anchor ring anchor hole and the angle of steel strand axis greater than intermediate plate from the locking angle, can freely come off with the state lower clamping piece that guarantees not stress at anchor pole.Be the reliability that guarantees that intermediate plate comes off, adopt special intermediate plate, special intermediate plate overcoat one ejection-spring of cylinder type, ejection-spring is between anchor ring and the terminal retaining head of intermediate plate, and after safeties were opened, the elastic force of ejection-spring can eject special intermediate plate from anchor ring.For guaranteeing the reliability of steel strand and anchor ring anchoring under loaded state, set up safeties.
The implementation procedure of safeties is following: in the intermediate plate outer end away from a side of anchor ring, the more powerful holddown spring of one in overcoat on steel strand, holddown spring is between intermediate plate and gusset.Along the direction in the hole, after gusset exerted pressure, gusset, holddown spring, special intermediate plate, ejection-spring and anchor ring fully compressed.
The implementation method of compaction process is following: on the center line of anchor ring, (be positioned at the centre position of many steel strand) aperture is set; The afterburning rod of a hollow is through this aperture; One end is connected the gusset outer end, and the other end is connected with minor diameter steel strand or wire rope wedging through chock or intermediate plate.Through jack (or other augmentor) extruding gusset, after holddown spring and ejection-spring compression are accomplished, promptly can be with chock or intermediate plate excellent and minor diameter steel strand or wire rope wedging with reinforcing, insurance function is promptly accomplished.Minor diameter steel strand or wire rope are zero at the loaded state lower stress, to guarantee the validity of stress safeties.The holddown spring coefficient of elasticity is greater than the coefficient of elasticity of ejection-spring, and controls both differences, can guarantee that holddown spring can adjust at any time, hold out against special intermediate plate, makes it clamp steel strand, guarantees that anchor pole is reliable all the time at whole loaded state.
During recovery; At keyed end stretch-draw minor diameter steel strand or wire rope (abbreviation stay cord), chock comes off, and afterburning rod, gusset, holddown spring successively unclamp; Tension force effect lower clamping piece at ejection-spring is ejected from the anchor hole of anchor ring, and the steel strand anchoring was lost efficacy and can from anchoring body, be pulled out.Removal process is accomplished.
The beneficial effect of the utility model is, after anchor pole was accomplished a protective function, steel strand can pull out from rock, the soil body, reclaims thereby accomplish, and reduces pollution to peripheral plot, leaves over and influences; The steel strand post processing of reclaiming, utilization convenience again, it is little to reclaim pulling force; Though be the pressure dispersing type anchor pole, many steel strand simultaneous tensions, and each root steel strand stress is consistent, has solved each root steel strand of current pressure decentralized anchor pole and has received the inconsistent technical barrier of force level.Middle anchorage node is an elastic panel nodes, and the stressed order of anchorage node in can regulating guarantees that each node plays a role successively.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the longitudinal section of the utility model end anchorage node.
Fig. 2 is the right side view of the utility model end anchorage node.
Fig. 3 is the left side view of the utility model end anchorage node.
Fig. 4 is the longitudinal section of the loaded state of the utility model anchorage node.
Fig. 5 is the longitudinal section after the insurance of opening of the utility model anchorage node.
Fig. 6 inserts the longitudinal section in the geotechnical body after the utility model assembling.
Among the figure, 1 steel strand, 2 anchor rings, 3 special intermediate plates, 4 holddown springs, 5 gussets, 6 ejection-springs, 7 afterburning rods, 8 cylinders, 9 stay cords, 10 pressurized end plates, 11 regulating springs, 12 end anchorage nodes, 13 anchor holes, anchorage node in 14,15 chocks or intermediate plate
The specific embodiment
Implementation process is divided into following three steps:
The first step: like Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 6; On steel strand 1, insert in the anchor ring 2 behind the special intermediate plate of overcoat 3, holddown spring 4 and the ejection-spring 6; Gusset 5 is enclosed within on the steel strand 1; Again afterburning rod 7 is penetrated in the medium pore of gusset 5 and anchor ring 2; After through augmentors such as jack gusset 5, holddown spring 4, special intermediate plate 3, ejection-spring 6 and anchor ring 2 being compressed then, 2 wedgings are connected with anchor ring with a stay cord 9 with reinforcing rod 7 through chock or intermediate plate 15, and anchorage node 12 was held in i.e. formation after the slit of 2 of cylinder 8 and 1 of steel strand and cylinder 8 and anchor rings was sealed with waterproof gasket cement; If after increasing regulating spring 11 and pressurized end plate 10 on the steel strand; Method of operating according to the end anchorage node compresses spring, intermediate plate and anchor ring again, anchorage node 14 in the i.e. formation after then cylinder 8 and 1 of steel strand and cylinder 8 being sealed with waterproof gasket cement with the slit of 10 of pressurized end plates.Middle anchorage node 14 is an elastic panel nodes, and afterburning rod 7 is the hollow metal cylinder, and stay cord 9 is passed through internally, and one of which end band retaining head can retrain gusset 5; The other end is opened longitudinal joint and can be used to connect stay cord 9 and anchor ring 2 through chock or intermediate plate 15.Cylinder 8 one ends have end plate, and perforate on the end plate is so that steel strand 1, stay cord 9 pass through; Other end opening is so that bond with anchor ring 2 or pressurized end plate 10.
The 2nd step: like Fig. 4, shown in Figure 6; With an end anchorage node 12 with after anchorage node 14 is installed on the steel strand in several; Put separation sleeve on steel strand 1 that anchorage node is outer and the stay cord 9, tie up Grouting Pipe, insert together then in the anchor hole 13 in the geotechnical body; In the hole, inject cement paste or cement mortar, promptly form anchor rod anchored body after slurries solidify.After anchoring body meets design requirement the length of time, with putting into the protection box after the unnecessary stay cord coiling, with the 1 locking anchoring of anchor pole steel strand.Fig. 4 is the longitudinal section of anchor rod anchored node loaded state.
The 3rd step: the bolt support function is opened the locking device in aperture, stretch-draw stay cord 9 after accomplishing; Chock or intermediate plate 15 are loosening, and afterburning rod 7 lost efficacy with the anchor connection of anchor ring 2, and gusset 5 drives afterburning excellent 7 reverse slide under the elastic force effect of holddown spring 4; Safeties lost efficacy, and special intermediate plate 3 is reverse slide under the elastic force effect of ejection-spring 6, and the anchoring of steel strand in anchor ring lost efficacy; Can steel strand be pulled out in the aperture, accomplish the recovery of steel strand.
Claims (4)
1. tear anchor type recoverable anchor rod open for one kind; In injecting cement paste; Comprise the anchorage node that the special intermediate plate, anchor ring, spring and the gusset that are positioned at cylinder cavity, afterburning rod, stay cord form, it is characterized in that: the safeties of forming through described gusset, afterburning rod, holddown spring and chock or intermediate plate are in order to firm fixation steel strand, intermediate plate and anchor ring; The insurance opening device of forming through ejection-spring, stay cord, chock or intermediate plate is in order to open described safeties; In the described safeties; In the intermediate plate outer end away from a side of anchor ring; Holddown spring of overcoat on steel strand, holddown spring are between intermediate plate and gusset, and gusset, holddown spring, special intermediate plate, ejection-spring and anchor ring are being exerted pressure to gusset along the direction in the hole and fully compressed; Use special intermediate plate and the ejection-spring of no auto-lock function to make that after the termination of insurance status, special intermediate plate separates with anchor ring and steel strand and comes off in cylinder cavity; Use described anchorage node to regulate the stressed of steel strand; The described ejection-spring of special intermediate plate overcoat of cylinder type; Ejection-spring is between anchor ring and the terminal retaining head of intermediate plate, and the elastic force of ejection-spring ejects special intermediate plate from anchor ring when safeties are opened.
2. a kind of anchor type recoverable anchor rod of tearing open according to claim 1; It is characterized in that: the inclination angle of special intermediate plate greater than it from the locking angle; Special intermediate plate freely comes off under the state that anchor ring, steel strand do not stress, and increases the catapult-launching gear that ejection-spring forms on the special intermediate plate.
3. a kind of anchor type recoverable anchor rod of tearing open according to claim 1; It is characterized in that: the setting of regulating spring and stressed end plate makes described anchorage node become elastic panel nodes; Through the length of regulating spring is set; Can regulate the stressed order of each anchorage node, guarantee that each node plays a role successively.
4. a kind of anchor type recoverable anchor rod of tearing open according to claim 1; It is characterized in that: the excellent hollow of described reinforcing; To accomplish of setting and the unlatching of a described stay cord simultaneously to the multinode safeties; Described stay cord passes through from the excellent inside of described reinforcing, and an end of described afterburning rod has the retaining head, in order to the constraint gusset; Its other end offers longitudinal joint, in order to connect stay cord and anchor ring through chock or intermediate plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200645573U CN202247873U (en) | 2011-03-11 | 2011-03-11 | Detachable recoverable anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200645573U CN202247873U (en) | 2011-03-11 | 2011-03-11 | Detachable recoverable anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202247873U true CN202247873U (en) | 2012-05-30 |
Family
ID=46109135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200645573U Expired - Fee Related CN202247873U (en) | 2011-03-11 | 2011-03-11 | Detachable recoverable anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202247873U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677670A (en) * | 2011-03-11 | 2012-09-19 | 王立明 | Dismountable-anchor type recoverable anchor rod |
| CN107513996A (en) * | 2017-10-20 | 2017-12-26 | 上海智平基础工程有限公司 | A kind of anchorage and its construction method of recoverable prestressed anchor cable |
| CN110274567A (en) * | 2019-06-20 | 2019-09-24 | 天地科技股份有限公司 | A kind of detection device and detection method of roadway surrounding rock sliding deformation |
| CN115506827A (en) * | 2022-08-03 | 2022-12-23 | 河南新华五岳抽水蓄能发电有限公司 | Convenient-to-detach curve-shaped anchoring device |
-
2011
- 2011-03-11 CN CN2011200645573U patent/CN202247873U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677670A (en) * | 2011-03-11 | 2012-09-19 | 王立明 | Dismountable-anchor type recoverable anchor rod |
| CN102677670B (en) * | 2011-03-11 | 2015-12-09 | 王立明 | One tears anchor formula recoverable anchor rod open |
| CN107513996A (en) * | 2017-10-20 | 2017-12-26 | 上海智平基础工程有限公司 | A kind of anchorage and its construction method of recoverable prestressed anchor cable |
| CN110274567A (en) * | 2019-06-20 | 2019-09-24 | 天地科技股份有限公司 | A kind of detection device and detection method of roadway surrounding rock sliding deformation |
| CN110274567B (en) * | 2019-06-20 | 2021-03-12 | 天地科技股份有限公司 | Detection device and detection method for roadway surrounding rock slippage deformation |
| CN115506827A (en) * | 2022-08-03 | 2022-12-23 | 河南新华五岳抽水蓄能发电有限公司 | Convenient-to-detach curve-shaped anchoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20160311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |