CN102677670B - One tears anchor formula recoverable anchor rod open - Google Patents
One tears anchor formula recoverable anchor rod open Download PDFInfo
- Publication number
- CN102677670B CN102677670B CN201110059321.5A CN201110059321A CN102677670B CN 102677670 B CN102677670 B CN 102677670B CN 201110059321 A CN201110059321 A CN 201110059321A CN 102677670 B CN102677670 B CN 102677670B
- Authority
- CN
- China
- Prior art keywords
- steel strand
- anchor
- node
- intermediate plate
- spring
- 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.)
- Active
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
A kind of anchor pole that can complete steel strand after use and reclaim in building foundation pit supporting engineering.It is in rock, the soil body after pore-forming, in the cement injection body in hole, utilizes anchorage node that steel strand anchor is tight, thus completes the function of carrying.Be provided with safeties in anchorage node, between steel strand and injecting cement paste, be provided with separation sleeve, after a protective function completes, can safeties be opened, steel strand be separated with ground tackle, steel strand are pulled out the soil body, complete recovery.An anchor pole can arrange multiple anchorage node, and the anchorage node being positioned at diverse location can adapt to distortion and the stressing conditions of steel strand by the setting of the adjusting device of its inside.Middle anchorage node is elastic panel nodes, can regulate the stressed order of anchorage node, by endpoint node, play anchorage effect successively to intermediate node.If arrange multiple node, then this kind of anchor pole is dispersed pressure anchor.But can simultaneous tension unlike, many steel strand, each steel strand stress is consistent, solves current pressure decentralized anchor pole each steel strand by the inconsistent technical barrier of force level.
Description
Technical field
The present invention relates in field of civil engineering foundation pit supporting project, for going along with sb. to guard him soil stabilization and the one that can reclaim steel strand in rock, the soil body after protective function completes tears anchor formula recoverable anchor rod open.
Background technology
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 usually after a protective function completes, this not only causes the waste of steel, and more seriously these steel are retained in ground and can cause adverse consequences (excavation is difficult, construction water-stop curtain is difficult, piling is difficult) to the later development in periphery plot.And steel are retained in ground, are also with current energy-saving consumption-reducing, reduce discharging that to fall the Scientific Outlook on Development such as dirty contrary.
In order to overcome the unrenewable deficiency of existing bolt support, having in the past and adopting swinging, hale 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 large; There is following problem in the recoverable anchor rod haling inefficacy formula: the raising of anti-pulling of anchor bar design load is contradiction with the reduction of recovery pulling force in principle.Existing anchor type of tearing open mainly adopts dismantle anchoring nut or the rotating stiff body of rod of special instrument that anchoring nut and the body of rod are come off, thus completes recovery, and this needs the high requirement such as the diameter of anchorage body is larger.The invention provides a kind of new callable technology and engineering method, belong to ground tackle and to pitch formula, after pattern foundation pit supporting structure function completes, effectively can reclaim the steel strand in ground or reinforcing bar, to reach in rock, the soil body steel without the object left over.
Summary of the invention
The technical solution adopted for the present invention to solve the technical problems is: when after pore-forming in the precalculated position at rock, the soil body, steel strand with one or several special anchorage node are inserted in hole, with separation sleeve on steel strand outside anchorage node, inject cement paste or cement mortar afterwards, after grout cures, namely form anchor pole.Anchorage node way on steel strand is as follows: need the position arranging anchorage node to install respectively at many steel strand ends arranged in parallel and other, fix a special anchor ring, these several steel strand are fixed together by anchor ring.A closed hollow cylinder is installed in the outside of anchor ring, after being closed by the gap waterproof gasket cement between cylinder and steel strand, namely forms special anchorage node.Except the anchorage node of least significant end, other anchorage node is elastic panel nodes, and what can regulate each section of steel strand is subject to force level.
Steel strand and being connected and fixed of anchor ring are realized by special intermediate plate, and special intermediate plate is without auto-lock function, and the angle of the contact surface between itself and anchor ring anchor hole and steel strand axis is greater than the Self-locking angle of intermediate plate, to ensure that the state lower clamping piece do not stressed at anchor pole can free dropping.For ensureing the reliability 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 intermediate plate end stopper, and after safeties are opened, special intermediate plate can eject by the elastic force of ejection-spring from anchor ring.For ensureing the reliability of steel strand and anchor ring anchoring under loaded state, set up safeties.
The implementation procedure of safeties is as follows: in the side of intermediate plate outer end away from anchor ring, the holddown spring that one, overcoat is more powerful on steel strand, and holddown spring is between intermediate plate and a gusset.Edge is to the direction in hole, and after applying pressure to gusset, gusset, holddown spring, special intermediate plate, ejection-spring and anchor ring fully compress.
The implementation method of compaction process is as follows: on the center line of anchor ring, (be positioned at the centre position of many steel strand) arrange an aperture, the reinforcing rod of a hollow is by this aperture, one end is connected to gusset outer end, and the other end is connected with minor diameter steel strand or wire rope wedging by chock or intermediate plate.Gusset is extruded by jack (or other augmentor), after holddown spring and ejection-spring have compressed, namely can with chock or intermediate plate by reinforcing rod and minor diameter steel strand or wire rope wedging, namely insurance function completes.Minor diameter steel strand or wire rope are zero at loaded state lower stress, to ensure the validity of stress safeties.Holddown spring coefficient of elasticity is greater than the coefficient of elasticity of ejection-spring, and the difference both controlling, can ensure that holddown spring can adjust at any time, hold out against special intermediate plate, make it clamp steel strand, ensure 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, afterburning rod, gusset, holddown spring successively unclamp, be ejected from the anchor hole of anchor ring at the tension force effect lower clamping piece of ejection-spring, steel strand anchoring lost efficacy and can pull out from anchoring body.Removal process completes.
The invention has the beneficial effects as follows, after anchor pole completes a protective function, steel strand can pull out from rock, the soil body, thus complete recovery, reduce the pollution on periphery plot, leave over and affect; The steel strand post processing of reclaiming, recycling conveniently, reclaim pulling force little; Though be dispersed pressure anchor, many steel strand can simultaneous tension, and each steel strand stress is consistent, solves current pressure decentralized anchor pole each steel strand by the inconsistent technical barrier of force level.Middle anchorage node is elastic panel nodes, and the stressed order of anchorage node in can regulating, ensures that each node plays a role successively.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the longitudinal section of end anchorage node of the present invention.
Fig. 2 is the right side view of end anchorage node of the present invention.
Fig. 3 is the left side view of end anchorage node of the present invention.
Fig. 4 is the longitudinal section of the loaded state of anchorage node of the present invention.
Fig. 5 is the longitudinal section opened after insurance of anchorage node of the present invention.
Fig. 6 is the longitudinal section of inserting after the present invention assembles in Rock And Soil.
In 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 hole walls, anchorage node in 14,15 chocks or intermediate plate
Detailed description of the invention
Implementation process is divided into following three steps:
The first step: as Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Fig. 6, at the upper special intermediate plate of overcoat (3) of steel strand (1), insert in anchor ring (2) after holddown spring (4) and ejection-spring (6), gusset (5) is enclosed within steel strand (1), again afterburning rod (7) is penetrated in the medium pore of gusset (5) and anchor ring (2), then by augmentors such as jack by gusset (5), holddown spring (4), special intermediate plate (3), after ejection-spring (6) and anchor ring (2) compress, by chock or intermediate plate (15), reinforcing rod (7) is connected with a stay cord (9) and anchor ring (2) wedging, by between cylinder (8) and steel strand (1), and gap between cylinder (8) and anchor ring (2) close with waterproof gasket cement after namely formed and hold anchorage node (12), if increase regulating spring (11) and pressurized end plate (10) on steel strand after, according to the method for operating of end anchorage node, spring, intermediate plate and anchor ring are compressed again, anchorage node (14) in namely being formed after then the gap between cylinder (8) and steel strand (1) and between cylinder (8) and pressurized end plate (10) being closed with waterproof gasket cement.Middle anchorage node (14) is elastic panel nodes, and afterburning rod (7) is hollow metallic cylinder, and stay cord (9) can be made to pass through from inside, and one end band stopper can retrain gusset (5); The other end is opened longitudinal joint and be can be used to connect stay cord (9) and anchor ring (2) by chock or intermediate plate (15).There is end plate cylinder (8) one end, and perforate on end plate is so that steel strand (1), stay cord (9) pass through; Other end opening, to bond with anchor ring (2) or pressurized end plate (10).
2nd step: as shown in Fig. 4, Fig. 6, by one end anchorage node (12) and in several anchorage node (14) be arranged on after on steel strand, steel strand (1) outside anchorage node and stay cord (9) put separation sleeve, tie up Grouting Pipe, then insert in the anchor hole in Rock And Soil together, in hole, inject cement paste or cement mortar, after grout cures, namely form anchorage body.After anchoring body meets design requirement the length of time, after being coiled by unnecessary stay cord, put into protection box, by anchor bar steel twisted wire (1) locking anchoring.Fig. 4 is the longitudinal section of anchor rod anchored node loaded state.
3rd step: after bolt support function completes, open the locking device in aperture, stretch-draw stay cord (9), chock or intermediate plate (15) loosen, afterburning rod (7) was lost efficacy with the anchor connection of anchor ring (2), gusset (5) drives afterburning rod (7) reverse slide under the elastic force effect of holddown spring (4), safeties lost efficacy, special intermediate plate (3) reverse slide under the elastic force effect of ejection-spring (6), the fastening invalidation of steel strand in anchor ring, in aperture, steel strand can be pulled out, complete the recovery of steel strand.
Claims (3)
1. tear anchor type recoverable anchor rod open for one kind, in injecting cement paste, comprise the special intermediate plate being positioned at cylinder cavity, anchor ring, spring and gusset, afterburning rod, the anchorage node that stay cord is formed, it is characterized in that: overcoat holddown spring successively on steel strand, insert in anchor ring from anchor ring side after special intermediate plate and ejection-spring, gusset is enclosed within steel strand, and afterburning rod penetrates in the medium pore of gusset and anchor ring, by chock or intermediate plate, reinforcing rod is connected with stay cord and anchor ring wedging, be arranged at the anchorage node of steel strand end for end anchorage node, the anchorage node being arranged at the non-end of steel strand is middle anchorage node, pass through gusset, afterburning rod, the safeties of holddown spring and chock or intermediate plate composition can firm fixing steel strand, intermediate plate and anchor ring, safeties can be opened by the insurance opening devcie of ejection-spring, stay cord, chock or intermediate plate composition, use the special intermediate plate without auto-lock function special intermediate plate after termination of insurance status can be made to come off in cylinder cavity after being separated with anchor ring, steel strand with ejection-spring, regulating spring and stressed end plate is set gradually at the opposite side of the anchor ring of middle anchorage node, use flexible middle anchorage node can regulate the stressed of steel strand, by arranging the length of regulating spring, the stressed order of anchorage node in adjustment, ensures that each node plays a role successively, the coefficient of elasticity of holddown spring is greater than the coefficient of elasticity of ejection-spring, can ensure that in installation process, ejection-spring fully compresses, and makes to launch more effective, can ensure that again holddown spring has flexible leeway, makes insurance opening devcie more effectively, conveniently, use the afterburning rod of hollow, setting and the unlatching of the safeties of multinode can be completed simultaneously.
2. one according to claim 1 tears anchor type recoverable anchor rod open, it is characterized in that: the inclination angle of special intermediate plate is greater than its Self-locking angle, free dropping under the state can not stressed at anchor ring, steel strand, special intermediate plate increases the catapult-launching gear that ejection-spring is formed, intermediate plate can be made to come off more effective.
3. one according to claim 1 tears anchor type recoverable anchor rod open, it is characterized in that: afterburning excellent hollow, and stay cord can be made to pass through from inside, and there is stopper one end, can retrain gusset; The other end opens longitudinal joint, can be used to connect stay cord and anchor ring by chock or intermediate plate, uses the afterburning rod of hollow, can complete a stay cord to the setting of multinode safeties and unlatching simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110059321.5A CN102677670B (en) | 2011-03-11 | 2011-03-11 | One tears anchor formula recoverable anchor rod open |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110059321.5A CN102677670B (en) | 2011-03-11 | 2011-03-11 | One tears anchor formula recoverable anchor rod open |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102677670A CN102677670A (en) | 2012-09-19 |
| CN102677670B true CN102677670B (en) | 2015-12-09 |
Family
ID=46810189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110059321.5A Active CN102677670B (en) | 2011-03-11 | 2011-03-11 | One tears anchor formula recoverable anchor rod open |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102677670B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674811B (en) * | 2015-03-03 | 2016-05-18 | 厦门市金海明工贸有限公司 | A kind of ground tackle and locking and unlock method |
| CN205604241U (en) * | 2016-02-26 | 2016-09-28 | 霍炳旭 | Can remove formula ground tackle reaches anchor rope including it |
| CN106088088B (en) * | 2016-08-08 | 2018-11-20 | 上海强劲地基工程股份有限公司 | The construction method of the stress dispersing type stiffening pile of recyclable dowel |
| CN108396741A (en) * | 2018-03-30 | 2018-08-14 | 重庆诺为生态环境工程有限公司 | A kind of stable soil body from anchor device |
| CN110966030B (en) * | 2019-12-10 | 2021-09-10 | 华北水利水电大学 | Extensible anchor rod and recoverable anchor rod device with multistage stress and displacement control |
| CN114457798B (en) * | 2022-02-28 | 2024-04-30 | 中国矿业大学 | Telescopic recoverable anchor rod anchoring device and application method thereof |
| CN115012401B (en) * | 2022-04-22 | 2023-12-12 | 安徽厚普建设工程有限公司 | Foundation structure of house building and construction method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206061A (en) * | 1997-07-18 | 1999-01-27 | 李志强 | Construction method to recover end pressure bolt support |
| CN2594515Y (en) * | 2001-10-25 | 2003-12-24 | 秦斌青 | Recoverable composite anchor with unitary anchoring sleeve |
| KR20040004847A (en) * | 2002-07-05 | 2004-01-16 | 최영근 | Compressive and extensive fixture of earth anchor |
| KR100463269B1 (en) * | 2001-08-29 | 2004-12-23 | 박병구 | Disjointable fixing apparatus of tension material and Removal method of tension material |
| EP1707684A1 (en) * | 2005-03-10 | 2006-10-04 | Dywidag-Systems International GmbH | Method and apparatus for tensioning of a multiple step anchor |
| CN101078212A (en) * | 2007-06-21 | 2007-11-28 | 李保国 | Anchorage and removing method thereof |
| CN101235645A (en) * | 2007-01-30 | 2008-08-06 | 李乐 | Reclaiming type anchor bar |
| CN201459723U (en) * | 2009-06-30 | 2010-05-12 | 中国水利水电科学研究院 | Spring-back detachable anchor cable |
| CN202247873U (en) * | 2011-03-11 | 2012-05-30 | 王立明 | Detachable recoverable anchor rod |
-
2011
- 2011-03-11 CN CN201110059321.5A patent/CN102677670B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206061A (en) * | 1997-07-18 | 1999-01-27 | 李志强 | Construction method to recover end pressure bolt support |
| KR100463269B1 (en) * | 2001-08-29 | 2004-12-23 | 박병구 | Disjointable fixing apparatus of tension material and Removal method of tension material |
| CN2594515Y (en) * | 2001-10-25 | 2003-12-24 | 秦斌青 | Recoverable composite anchor with unitary anchoring sleeve |
| KR20040004847A (en) * | 2002-07-05 | 2004-01-16 | 최영근 | Compressive and extensive fixture of earth anchor |
| EP1707684A1 (en) * | 2005-03-10 | 2006-10-04 | Dywidag-Systems International GmbH | Method and apparatus for tensioning of a multiple step anchor |
| CN101235645A (en) * | 2007-01-30 | 2008-08-06 | 李乐 | Reclaiming type anchor bar |
| CN101078212A (en) * | 2007-06-21 | 2007-11-28 | 李保国 | Anchorage and removing method thereof |
| CN201459723U (en) * | 2009-06-30 | 2010-05-12 | 中国水利水电科学研究院 | Spring-back detachable anchor cable |
| CN202247873U (en) * | 2011-03-11 | 2012-05-30 | 王立明 | Detachable recoverable anchor rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102677670A (en) | 2012-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102677670B (en) | One tears anchor formula recoverable anchor rod open | |
| WO2020238501A1 (en) | Full-assembly pressure-bearing type variable-diameter steel cage expansion head anchor rod pile system | |
| WO2015176614A1 (en) | Construction method and structure of pressure dispersing expansion head anchor rod | |
| CN211397620U (en) | Recoverable expanding anchor rod | |
| CN201099859Y (en) | Multi-segment pocket type squeezing -type anchor rod | |
| CN110206560A (en) | A kind of adaptive composite lining structure suitable for large deformation soft rock tunnel | |
| CN108457266B (en) | Post-grouting device and method for pile side of cast-in-place pile | |
| CN105626112A (en) | Support device based on built-in type constant-resistance device and use method thereof | |
| CN201686986U (en) | Pre-stressed anchor bar with detachable main bar | |
| CN104790392A (en) | Construction device and method for reverse bamboo joint type anti-floating anchor rod | |
| CN101148877A (en) | Multistage bag-type compression anchor bar | |
| CN104895073A (en) | Anchor rope construction system capable of being disassembled for many times and construction method thereof | |
| CN202247873U (en) | Detachable recoverable anchor rod | |
| CN210562163U (en) | Prefabricated prestressed anchor rod piece | |
| CN107663858A (en) | The anchor cable and its application method of recovery can be unlocked | |
| CN104532860A (en) | Recoverable soil nail | |
| CN103758125A (en) | Squeezing lock head spring bearing plate stress dispersing type large-tonnage expanding head anchor cable | |
| CN205171547U (en) | Recoverable miniature stock wall | |
| CN109826209A (en) | Utilize the device and method of flexible strand anchoring country rock | |
| CN212153367U (en) | Sleeve type variable-diameter steel reinforcement cage and expanded anchor rod pile | |
| CN106836217A (en) | A kind of construction method of expansion end formula soil bolt or soil nailing | |
| CN114000504A (en) | Weft thread disconnected-connection type variable-diameter fiber cage and anchor rod thereof | |
| CN213508499U (en) | Narrow and small space upward formula full length bonding anchor rope downthehole segmentation of formula ends thick liquid structure | |
| CN213233429U (en) | Full-assembly pressure-bearing type variable-diameter steel reinforcement cage enlarged footing anchor pile system | |
| CN111287201A (en) | Weft continuous variable-diameter reinforcement cage and expanded anchor rod pile thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Liming Document name: Notification of Publication of the Application for Invention |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |