CN203296042U - Recoverable anchor rod - Google Patents
Recoverable anchor rod Download PDFInfo
- Publication number
- CN203296042U CN203296042U CN2013202232930U CN201320223293U CN203296042U CN 203296042 U CN203296042 U CN 203296042U CN 2013202232930 U CN2013202232930 U CN 2013202232930U CN 201320223293 U CN201320223293 U CN 201320223293U CN 203296042 U CN203296042 U CN 203296042U
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- China
- Prior art keywords
- cfrp
- sleeve pipe
- anchor
- casing pipe
- pull bar
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Abstract
The utility model discloses a recoverable anchor rod, comprising a CFRP (Carbon Fiber Reinforced Plastic) casing pipe, wherein a pull rod is arranged in the CFRP casing pipe axially; a clamping sheet anchorage device is arranged at the upper end of the CFRP casing pipe; an anchor cone head is arranged at the bottom end of the CFRP casing pipe; the bottom of the pull rod is in threaded connection with the anchor cone head. The recoverable anchor rod is characterized in that the CFRP casing pipe is cut into a plurality of sections; the cut parts of the CFRP casing pipe are connected with one another through extensible square steel; the horizontal widths of the extensible square steel under a closed state are increased in sequence along the top end to the bottom end of the CFRP casing pipe; the CFRP casing pipe comprises a plurality of sections of sub-casing pipes; the two sides of the CFRP casing pipe are evenly provided with a plurality of agitating vanes; a plastic fixing piece used for fixing the pull rod is arranged in the CFRP casing pipe; the clamping sheet anchorage device comprises a soft metallic sheath which is sleeved outside the CFRP casing pipe, an inverted cone-shaped elastic clamping ring, an anchor ring and an anchor backing plate. The recoverable anchor rod has the advantages that the anchoring force is strong, the bearing force of the anchor rod is large, the construction is easy during anchoring, and the ground pollution is small.
Description
Technical field
The utility model relates to anchor pole, especially relates to a kind of recoverable anchor rod.
Background technology
Anchor pole generally is applicable to the anchoring of all kinds of underground constructions and all kinds of side slopes etc., such as tunnel, mine, ground, slope of highway, house side slope etc.In recent years, the urban track traffic cause is risen rapidly in various places, and this anchor device of anchor pole starts for large underground; In Practical Project, for the needs of engineering reality, engineers and technicians design various anchor pole in succession.Anchor pole is divided into two permanent and provisional classes., for permanent, generally anchor-holding force of anchor bolt is had relatively high expectations.But that uses in current engineering mostly is steel anchor rod, its corrosion-resistant, and the corrosion that is easy to the invar muscle causes body of rod anchored force to descend; In addition, steel anchor rod easy conductive, weight are large.For temporary work, if still with permanent anchor pole, will certainly cause the wasting of resources; Simultaneously, if in city, a large amount of anchor poles are embedded in underground, and excavation of foundation pit, subway work, the city long-term plan in follow-up construction, adjacent plot all likely exerted an influence.For the problems referred to above, recoverable anchor rod arises at the historic moment.
Current, recoverable anchor rod can be divided three classes basically: (1) tears anchor type anchor pole open: can be divided into pitch two kinds of formulas of bolt type and ground tackle.The former makes bolt type with anchored end.The body of rod is often the rigidity body of rod, utilizes special instrument or body of rod rotation itself during recovery, the anchoring nut is separated with the body of rod, thereby the body of rod is reclaimed.This kind mode is higher to equipment requirement, and aperture is generally larger, and application is more in rock stratum or coal seam.The latter takes certain measure, makes the anchor clipper loose or dislocation of anchored end, thereby steel strand are extracted; (2) hale the failure type anchor pole: anchored end is provided with anchorage node and the end plate with certain threshold value, adopts extruded sleeve or swollen shell and other rupture pattern.Nothing bonding between steel strand and slip casting anchoring body.When steel strand reclaim, by applying the pulling force over steel strand design uplift resistance one threshold value, after the extruded sleeve stretch-draw in anchorage node was lost efficacy, steel strand to be pulled out by force, the reduction of the raising of this kind anchor pole bearing capacity and recovery pulling force is conflicting, reclaim pulling force larger, the anchor pole bearing capacity is lower; (3) rotary type anchor pole: adopt non-bending steel cable in the revolution of anchor pole root U type, and at rotating part, special supporting body formation is set.Its operating principle is: loosen stretching end when steel strand reclaim, pull of single steel strand, pull out with steel strand are in anchorage body.Need mechanical hole building with tearing anchor type anchor pole open, to tear anchor type anchor pole open simple although reclaim, and during anchoring, difficulty of construction is still larger, and ground pollution is serious.
Summary of the invention
Technical problem to be solved in the utility model is to provide that a kind of anchored force is strong, the anchor pole bearing capacity large, during anchoring construction easily, the recoverable anchor rod that ground pollution is little.
the utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of recoverable anchor rod, comprise the CFRP sleeve pipe, axially be provided with pull bar in described CFRP sleeve pipe, the upper end of described CFRP sleeve pipe is provided with strand tapered anchorage, the bottom of described CFRP sleeve pipe is provided with the anchor cone head, the bottom of described pull bar and described anchor cone head are threaded connection, described CFRP sleeve pipe is cut into some sections, the part that sections of described CFRP sleeve pipe connects by scalable square steel, transverse width under each described scalable square steel closure state increases to bottom successively along the top of described CFRP sleeve pipe.
Described CFRP sleeve pipe comprises some sections minutes sleeve pipes, and each described minute sleeve pipe crossed each other screw thread and closely connected.
The both sides of described CFRP sleeve pipe evenly are provided with several stirring vanes, and the length of described stirring vane is 3-8cm.
Be provided with the plastic fixtures for fixing described pull bar in described CFRP sleeve pipe, described plastic fixtures comprises pull bar locating ring and several feets, described pull bar locating ring closely is set in the periphery of described pull bar, one end of described feet is fixed on the outer wall of described pull bar locating ring, and the other end is fixed on the inwall of described CFRP sleeve pipe.
Described strand tapered anchorage comprises be used to being set in described CFRP sleeve pipe outer soft metal sleeve pipe, the elastic clamp ring that is back taper, anchor ring and anchor plate, described elastic clamp ring entire card is embedded in the bellmouth of described anchor ring, described anchor ring is connected on described anchor plate, and the frictional resistance angle between described soft metal sleeve pipe and described CFRP sleeve pipe is greater than the coning angle sum of the frictional resistance angle between described elastic clamp ring and described anchor ring and described elastic clamp ring.
The upper end major part of described anchor cone head is welded with some steel bars and by described steel bar, with described CFRP sleeve pipe, is fixedly connected with, and in described anchor cone head, screw is set, and described screw is connected with the external screw thread of described pull bar bottom.
Described scalable square steel mainly is comprised of four root bars, and four described ribs are hinged by pin with described CFRP sleeve pipe respectively, and it is hinged that the other end of described rib and adjacent described rib pass through pin.
Described CFRP casing diameter is got 200-300mm,
Described pull bar adopts carbon fibre composite to make.
Compared with prior art, the utility model has the advantage of: this anchor pole afterbody compartment is non-isometrical umbrella, anchored force is stronger, and can decision anchor recovering actual in engineering whether, this kind anchor pole economy, reasonable, corrosion-resistant, the life-span is long, pore-forming, enter bar, disposable the completing of grouting, construction is simple.
Description of drawings
Fig. 1 is the structural representation of the utility model recoverable anchor rod;
Fig. 2 is the A-A' place lateral cross section sectional view of Fig. 1;
Fig. 3 is the structural representation of the utility model strand tapered anchorage.
The specific embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
Specific embodiment
A kind of recoverable anchor rod of the utility model, as shown in Figure 1, comprise CFRP sleeve pipe 1, the interior pull bar 2 that axially is provided with of CFRP sleeve pipe 1, the upper end of CFRP sleeve pipe 1 is provided with strand tapered anchorage 3, and the bottom of CFRP sleeve pipe 1 is provided with anchor cone head 4, the bottom of pull bar 2 and anchor cone head 4 are threaded connection, CFRP sleeve pipe 1 is cut into some sections, and the part that sections of CFRP sleeve pipe 1 connects by scalable square steel 5, and the transverse width under each scalable square steel 5 closure states increases to bottom successively along the top of CFRP sleeve pipe 1.With drilling reamer rotation CFRP sleeve pipe 1, scalable square steel 5 is compressed and makes the anchor pole afterbody be umbrella.
In this specific embodiment, CFRP sleeve pipe 1 comprises some sections minutes sleeve pipes (every segment length can actually according to engineering determine), each minute sleeve pipe each other the mistake screw thread closely connect (not shown).The both sides of CFRP sleeve pipe 1 evenly are provided with several stirring vanes 6, the length of stirring vane 6 be 3-8cm(as shown in Figure 1, the number of blade, blade pitgh can obtain according to the engineering Practical Calculation).
In this specific embodiment, as shown in Figure 2, be provided with the plastic fixtures 7 for steady brace 2 in CFRP sleeve pipe 1, plastic fixtures 7 comprise in pull bar locating ring 8 and several feets 9(figure be shown as 3), pull bar locating ring 8 closely is set in the periphery of pull bar 2, one end of feet 9 is fixed on the outer wall of pull bar locating ring 8, and the other end is fixed on the inwall of CFRP sleeve pipe 1.
In this specific embodiment, as shown in Figure 3, strand tapered anchorage 3 comprises be used to being set in CFRP sleeve pipe 1 outer soft metal sleeve pipe 31, the elastic clamp ring 32 that is back taper, anchor ring 33 and anchor plate 34, elastic clamp ring 32 entire card are embedded in the bellmouth of anchor ring 33, anchor ring 33 is connected on anchor plate 34, and the frictional resistance angle between soft metal sleeve pipe 31 and CFRP sleeve pipe 1 is greater than the coning angle sum of the frictional resistance angle between elastic clamp ring 32 and anchor ring 33 and elastic clamp ring 32.
In this specific embodiment, as shown in Figure 1, the upper end major part of anchor cone head 4 is welded with some steel bars 10 and by steel bar 10, with CFRP sleeve pipe 1, is fixedly connected with, and in anchor cone head 4, screw is set, and screw is connected (not shown) with the external screw thread of pull bar 2 bottoms.Scalable square steel 5 (from top to bottom increases successively, non-equant purpose when realizing hole enlargement) mainly by four root bars 11, formed, four root bars 11 are hinged by pin 12 with CFRP sleeve pipe 1 respectively, and the other end of rib 11 and adjacent rib 11 are hinged by pin 12.Pin 12 is members of connecting hinge contact, bears very large shearing, so the material of pin 12 employing structural alloy steel,, by Technologies for Heating Processing such as quench hot, middle lonneals, strengthens its intensity.
In this specific embodiment, CFRP sleeve pipe 1 diameter is got 200-300mm, and pull bar 2 adopts carbon fibre composite to make.
Job practices
Before construction, at first pull bar 2 and anchor cone head 4 are tightened, every section minute sleeve pipe is threaded connection, tightens formation CFRP sleeve pipe 1, then anchor cone head 4 is connected with CFRP sleeve pipe 1, note herein and will be enclosed within plastic fixtures 7 on pull bar 2 and connect again CFRP sleeve pipe 1.
During construction, the CFRP sleeve pipe 1 of anchor pole and pull bar 2 all are connected to the ad-hoc location of drilling reamer, in current engineering, drilling reamer used improves a little and can meet the instructions for use of this kind anchor pole.After manually anchor cone head 4 being let drive at implantation site, open drilling reamer anchor pole is squeezed into ground.Should be noted herein, the first rotating rod 2 of drilling reamer and need not whitewashing, divide scalable square steel 5 on sleeve pipe to be in straight configuration, after first paragraph divides sleeve pipe to squeeze into ground, can whether will be screwed to the preceding paragraph with minute sleeve pipe of scalable square steel 5 according to the engineering actual selection divides on sleeve pipe, continue rotating rod 2, each section minute sleeve pipe afterwards uses the same method and throws in ground; But when final stage divided sleeve pipe, the pull bar 2 that stops the rotation, started to rotate CFRP sleeve pipe 1.Connecting fully docking until the CFRP sleeve pipe 1 scalable square steel 5 of use is that the anchor pole profile continues rotation CFRP sleeve pipe 1 and starts whitewashing while being umbrella.
After above-mentioned work is completed,, for permanent work or the demanding engineering of short term strength, can directly use strand tapered anchorage 3 with the anchor head anchoring.If general temporary works, the anchor pole position that remains in compressive state is motionless, and the reverse rotation pull bar separates its anchor cone head 4, thereby pull bar 2 is reclaimed.
Above-described embodiment is that the utility model is further explained, and protection domain of the present utility model is as the criterion with claims.
Claims (9)
1. recoverable anchor rod, comprise the CFRP sleeve pipe, axially be provided with pull bar in described CFRP sleeve pipe, the upper end of described CFRP sleeve pipe is provided with strand tapered anchorage, the bottom of described CFRP sleeve pipe is provided with the anchor cone head, the bottom of described pull bar and described anchor cone head are threaded connection, it is characterized in that: described CFRP sleeve pipe is cut into some sections, the part that sections of described CFRP sleeve pipe connects by scalable square steel, and the transverse width under each described scalable square steel closure state increases to bottom successively along the top of described CFRP sleeve pipe.
2. a kind of recoverable anchor rod according to claim 1, it is characterized in that: described CFRP sleeve pipe comprises some sections minutes sleeve pipes, each described minute sleeve pipe crossed each other screw thread and closely connected.
3. a kind of recoverable anchor rod according to claim 1, it is characterized in that: the both sides of described CFRP sleeve pipe evenly are provided with several stirring vanes, and the length of described stirring vane is 3-8cm.
4. a kind of recoverable anchor rod according to claim 1, it is characterized in that: be provided with the plastic fixtures for fixing described pull bar in described CFRP sleeve pipe, described plastic fixtures comprises pull bar locating ring and several feets, described pull bar locating ring closely is set in the periphery of described pull bar, one end of described feet is fixed on the outer wall of described pull bar locating ring, and the other end is fixed on the inwall of described CFRP sleeve pipe.
5. a kind of recoverable anchor rod according to claim 1, it is characterized in that: described strand tapered anchorage comprises be used to being set in described CFRP sleeve pipe outer soft metal sleeve pipe, the elastic clamp ring that is back taper, anchor ring and anchor plate, described elastic clamp ring entire card is embedded in the bellmouth of described anchor ring, described anchor ring is connected on described anchor plate, and the frictional resistance angle between described soft metal sleeve pipe and described CFRP sleeve pipe is greater than the coning angle sum of the frictional resistance angle between described elastic clamp ring and described anchor ring and described elastic clamp ring.
6. a kind of recoverable anchor rod according to claim 1, it is characterized in that: the upper end major part of described anchor cone head is welded with some steel bars and by described steel bar, with described CFRP sleeve pipe, is fixedly connected with, in described anchor cone head, screw is set, described screw is connected with the external screw thread of described pull bar bottom.
7. a kind of recoverable anchor rod according to claim 1, it is characterized in that: described scalable square steel mainly is comprised of four root bars, four described ribs are hinged by pin with described CFRP sleeve pipe respectively, and it is hinged that the other end of described rib and adjacent described rib pass through pin.
8. according to claim 1-7 described a kind of recoverable anchor rods of any one, it is characterized in that: described CFRP casing diameter is got 200-300mm.
9. the described a kind of recoverable anchor rod of any one according to claim 1-7, it is characterized in that: described pull bar adopts carbon fibre composite to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202232930U CN203296042U (en) | 2013-04-26 | 2013-04-26 | Recoverable anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202232930U CN203296042U (en) | 2013-04-26 | 2013-04-26 | Recoverable anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203296042U true CN203296042U (en) | 2013-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202232930U Expired - Fee Related CN203296042U (en) | 2013-04-26 | 2013-04-26 | Recoverable anchor rod |
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| CN (1) | CN203296042U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278674A (en) * | 2014-09-22 | 2015-01-14 | 华汇工程设计集团股份有限公司 | Recyclable expansion anchor rod and construction method thereof |
| CN107178383A (en) * | 2017-05-25 | 2017-09-19 | 镇江巨能电气有限公司 | A kind of hollow grouting anchor |
| CN107290777A (en) * | 2017-06-07 | 2017-10-24 | 山东大学 | A kind of assembled casing forecast suitable for tunnel tsp, system and method |
| CN107620603A (en) * | 2017-09-26 | 2018-01-23 | 中国矿业大学 | A kind of novel slurry filling anchor pole with steel loop bar |
| CN110608061A (en) * | 2019-08-14 | 2019-12-24 | 四川大学 | Prestressed grouting anchor rod and installation and recovery method thereof |
| CN111335325A (en) * | 2020-03-05 | 2020-06-26 | ***电子综合勘察研究院 | Deep foundation pit supporting structure |
-
2013
- 2013-04-26 CN CN2013202232930U patent/CN203296042U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278674A (en) * | 2014-09-22 | 2015-01-14 | 华汇工程设计集团股份有限公司 | Recyclable expansion anchor rod and construction method thereof |
| CN104278674B (en) * | 2014-09-22 | 2015-12-16 | 华汇工程设计集团股份有限公司 | A kind of callable expansion head anchor pole and construction method thereof |
| CN107178383A (en) * | 2017-05-25 | 2017-09-19 | 镇江巨能电气有限公司 | A kind of hollow grouting anchor |
| CN107290777A (en) * | 2017-06-07 | 2017-10-24 | 山东大学 | A kind of assembled casing forecast suitable for tunnel tsp, system and method |
| CN107620603A (en) * | 2017-09-26 | 2018-01-23 | 中国矿业大学 | A kind of novel slurry filling anchor pole with steel loop bar |
| CN107620603B (en) * | 2017-09-26 | 2023-09-22 | 中国矿业大学 | Novel grouting anchor rod with steel loop bar |
| CN110608061A (en) * | 2019-08-14 | 2019-12-24 | 四川大学 | Prestressed grouting anchor rod and installation and recovery method thereof |
| CN110608061B (en) * | 2019-08-14 | 2024-04-05 | 四川大学 | Prestressed grouting anchor rod and installation and recovery method thereof |
| CN111335325A (en) * | 2020-03-05 | 2020-06-26 | ***电子综合勘察研究院 | Deep foundation pit supporting structure |
| CN111335325B (en) * | 2020-03-05 | 2021-07-20 | ***电子综合勘察研究院 | Deep foundation pit supporting structure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20170426 |