CN107558470A - A kind of new grouted anchor bar and construction method with the adjustable wing - Google Patents
A kind of new grouted anchor bar and construction method with the adjustable wing Download PDFInfo
- Publication number
- CN107558470A CN107558470A CN201710941683.4A CN201710941683A CN107558470A CN 107558470 A CN107558470 A CN 107558470A CN 201710941683 A CN201710941683 A CN 201710941683A CN 107558470 A CN107558470 A CN 107558470A
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- China
- Prior art keywords
- anchor
- rod
- bar
- anchor pole
- fine thread
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- 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.)
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Abstract
The present invention discloses a kind of new grouted anchor bar and construction method with the adjustable wing, wherein, including：The hollow bolt body of rod, its body of rod is not threaded in Rock And Soil interior section, termination is bullet, injected hole is evenly distributed among the body of rod, the internal diameter annulus set equal with external diameter of rod body is cased with outside the body of rod, annulus puts 90 ° of interval and fine thread reinforcing bar and steel wire weld, and steel wire welded contact line and fine thread steel bar welding contact line are mutually perpendicular to；It is hinged between fine thread reinforcing bar, is welded in the body of rod close at pallet with the body of rod, after Wire pulling covers generation one section shifting by annulus, is wound along body of rod back segment hand of spiral；Stop grouting plug is loaded onto in anchor pole back segment, pallet, nut, tightening nut gives anchor pole to apply pretightning force successively.The present invention makes fine thread reinforcing bar rotate around hinge to form the adjustable wing of certain angle by taut wire, by can adjust the contact area between wing increase anchor pole and slip casting slurry, the adjustable wing and slurry liquid contacts face and axis force of anchor direction are at a certain angle simultaneously, thus effectively raise the overall stretching resistance of anchor pole.
Description
Technical field
The present invention relates to ground supporting field, and in particular to a kind of new grouted anchor bar and construction party with the adjustable wing
Method.
Background technology
During underground engineering, mining engineering, foundation ditch and the slope project that Geotechnical Engineering is related to, to prevent stratum deformation
Cave in or unstability, a kind of main support technology reinforced to stratum is bolt anchorage.By setting anchor in the earth formation
High-strength tensile ability possessed by bar and by around anchor pole and anchor pole between slurry and stratum the mode such as closely knit combination by ground
Layer is reinforced.
Grouted anchor bar, it is a kind of hollow lever anchor pole with holes, by external device by injecting paste material with certain pressure
Be injected into weak surrounding rock or side slope, foundation ditch the soil body in.Injecting paste material can fill wall-rock crack, soil body space, improve rock and
The cohesive strength and internal friction angle of the soil body, so as to improve the bearing capacity of country rock.
The anchor force of anchor pole is mainly to be provided by the anchoring section of anchor pole, and the contact surface of anchoring section has：Anchor pole connects with Anchor Agent
Contacting surface, Anchor Agent and country rock contact surface.So the anchoring section quality of anchor pole, the anchoring effect of anchor pole, a matter are directly determined
The anchoring section of amount difference can directly result in anchor pole failure.Often occur anchor rod anchored section in Practical Project with binding agent contact surface to occur
Slide and cause anchor pole to fail.
The content of the invention
The present invention provides a kind of new grouted anchor bar and construction method with the adjustable wing regarding to the issue above, for increasing
The shearing strength of strong anchor pole and binding agent contact surface, improves grouted anchor bar anchoring quality, reduces the failure probability of anchor pole.
The present invention provides a kind of new grouted anchor bar and construction method with the adjustable wing, including：The hollow bolt body of rod,
Stop grouting plug, pallet, nut, injected hole, pad, annulus set, fine thread reinforcing bar, hinge, steel wire.
The body of rod, be hollow lever, be divided into two sections, leading portion be not threaded hollow lever inside Rock And Soil, after
Section is with externally threaded hollow lever outside Rock And Soil.
The body of rod, injected hole is uniform-distribution with the leading portion body of rod, the back segment body of rod puts the stop grouting plug, the support respectively
Disk, the nut, by screwing the nut, apply pretightning force to anchor pole.
The internal diameter annulus set equal with external diameter of rod body is put outside the body of rod, the annulus puts 90 ° points of interval
Not with the fine thread reinforcing bar, the steel wire weld, the pad line of the steel wire and the pad for telling fine thread reinforcing bar
Line is vertical.
The body of rod welds with the fine thread reinforcing bar in the body of rod leading portion close to the afterbody of pallet.
The steel wire is through the stop grouting plug, the pallet, the back segment for being wrapped in along the body of rod hand of spiral body of rod.
Above-mentioned rockbolt installation construction method is as follows：
1) prepare equipment, after drilling jumbo is in place, connect water supply, the power supply pipeline of drill jumbo；
2) cloth eye is measured, according to Soil Anchor Design spacing and the distribution situation of rock mass, the stratification of the soil body and joint, with paint
Mark eye position；For stratification, joint development position, it should encrypt and lay eye position；
3) drill, drilled with drilling jumbo, drilling rod is inside the layer in rock mass or the soil body hole during drilling；Ensure that drilling is straight
Footpath is slightly larger than anchor bar body diameter；
4) empty and check, being passed through high-pressure blast with elbow steel pipe blows off aggregate chips and tiny stone in anchor pole fixing hole；Inspection
Whether the hole depth for looking into anchor pole fixing hole meets to require；
5) pack moistening, pack is soaked in the water of cleaning, (the specific time presses to use and said within about 10~15 minutes for immersion
Bright book), pack is sufficiently humidified so as to but can not be solidified.
6) pack is filled in, and pack top is sent into behind bottom and then extracted out using pvc pipe of the aperture slightly larger than pack.
7) assemble and squeeze into anchor pole, the anchor rod body is put into the annulus set, anchor sleeve is pushed into anchor rod body end
At portion, the fine thread reinforcing bar is welded together with anchor rod body in the body of rod other end, weld locations exist, will after being welded
Anchor pole squeezes into anchor pole fixing hole, untill reaching projected depth；
8) fixing anchor bar, after the anchor rod body squeezes into projected depth, covered successively after anchor pole end anchorage agent solidification
The upper stop grouting plug, the pallet, by the steel wire through the stop grouting plug and the pallet along anchor rod body hand of spiral
Winding, then the nut is loaded onto, screw the nut and apply the pretightning force for meeting design requirement to anchor pole；
9) slip casting, the slurries mixed is connected into anchor rod body by air compressor machine and are injected into inside Rock And Soil.After slip casting
Block the injected hole of anchor rod body end in time with Anchor Agent.
Brief description of the drawings
In order to illustrate more clearly of embodiment of the present invention or technical scheme of the prior art, below will to embodiment or
The required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
Some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 the structural representation of present invention；
Fig. 2 is enclosed on the detail drawing of anchor bar body formation outside；
Schematic diagram of Fig. 3 anchor poles in the state of Wire pulling；
Fig. 4 is enclosed on detail drawing of the anchor bar body formation outside under Wire pulling state；
Fig. 5 annulus covers detail drawing；
Main Reference Numerals explanation
The 1- hollow bolts body of rod, 2- stop grouting plugs, 3- pallets, 4- nuts, 5- injected holes, 6- pads, 7- annulus set, 8- are thin
Spiral, 9- hinges, 10- reinforcing bars, 11- pads.
Embodiment
Below in conjunction with the accompanying drawings, by the description to embodiment, the present invention and its embodiment are described further,
It is to be understood that protection scope of the present invention is not limited by embodiment.
Fig. 1 is the structural representation of the present invention, and the present invention is a kind of new grouted anchor bar with the adjustable wing, including in
Spare anchor club shaft 1, stop grouting plug 2, pallet 3, nut 4, injected hole 5, pad 6, annulus set 7, fine thread reinforcing bar 8, hinge 9, steel
Silk 10, pad 11.The leading portion end of hollow lever 1 is cone, injected hole 5 is uniformly equipped with the middle body of rod, described
The annulus set 7 is put on the slip casting body of rod 1, the internal diameter of the annulus set 7 is equal with the external diameter of the anchor rod body 1, the bar
Body is squeezed into after Rock And Soil successively to the stop grouting plug 2, the pallet 3, the nut 4 is inserted on the body of rod, by screwing the spiral shell
Mother 4 applies pretightning force to anchor pole；Be cased with a structure outside the anchor rod body 1, the structure by annulus set 7 with it is described thin
Spiral 8 forms, wherein by being welded to connect between annulus set 7 and the fine thread reinforcing bar 8, weld locations are institute
Pad 6 is stated, by being welded to connect between the anchor rod body 1 and the fine thread reinforcing bar 8, weld locations are the welding
11 are put, is connected between the fine thread reinforcing bar 8 with the hinge 9.
Fig. 2 is to be enclosed on anchor bar body formation outside detail drawing, including annulus set 7, the fine thread reinforcing bar 8, the hinge
9th, the steel wire 10；Welded between the annulus set 7 and the fine thread reinforcing bar 8 and the steel wire 10, weld locations are weldering
Contact 6, connected by the hinge 9 between the fine thread reinforcing bar 8, between the fine thread reinforcing bar 8 and the anchor rod body 1
Welding, weld locations are pad 11.
Fig. 3 is schematic diagram of the anchor pole in the state of Wire pulling, after anchor pole is driven into projected depth, puts institute successively
Stop grouting plug 2, the pallet 3 are stated, the steel wire is passed through into the stop grouting plug 2 and the pallet 3, along the anchor rod body screw thread
Direction is wound, then is put the nut 4 and screwed the nut 4 and apply pretightning force to anchor pole.
Fig. 4 is the detail drawing for being enclosed on anchor bar body formation outside under Wire pulling state, institute under the tension of steel wire 10
State annulus set 7 and slide certain displacement along the body of rod 1, relatively rotated between the fine thread reinforcing bar 8 around the hinge 9
Shape forms an angle.
Fig. 5 is annulus set detail drawing, and the annulus set 7 is to be equal to the anchor bar body 1 with certain thickness steel loop, its internal diameter
External diameter, position that itself and the fine thread reinforcing bar 8 and the steel wire 10 weld pad is the pad 6.
In the drilling jumbo perforating of the position of design, after the completion of perforating, the timely crushed stone cleared up in bolthole during construction
And aggregate chips, ensure that bore diameter is slightly larger than anchor bar body diameter；Assemble and squeeze into anchor pole, the anchor rod body 1 is put into the circle
Ring set 7, the annulus set 7 weld with the fine thread reinforcing bar 8 and the steel wire 10, and weld locations are the pad 6, will
Anchor sleeve 7 is pushed into anchor rod body end, welds together the fine thread reinforcing bar 8 with anchor rod body 1 in the body of rod other end,
Weld locations are pad 11, anchor pole are squeezed into anchor pole fixing hole after being welded, untill reaching projected depth；Described
After anchor rod body 1 squeezes into projected depth, the stop grouting plug 2, the pallet 3 are put successively, and the steel wire 10 is passed through into the note
Slurry plug 2 and the pallet 3, tension allow the annulus set 7 to move a segment distance, so described fine thread relative to the body of rod 1
Shape will be relatively rotated between reinforcing bar 8 around the hinge 9 to have a certain degree, then by the steel wire 10 along anchor rod body spiral shell
Line direction is wound, then the spiral shell 4 is loaded onto, and is screwed the nut 4 and is applied the pretightning force for meeting design requirement to anchor pole；It will mix
Slurries by air compressor machine connect anchor rod body be injected into inside Rock And Soil.Block the anchor after slip casting in time with Anchor Agent
The injected hole of the end of club shaft 1.After grouting serous fluid solidification, slurries except with the body of rod 1 exist contact surface also with into certain
There is contact surface in the fine thread reinforcing bar 8 of angle, so on the one hand improve the anchor pole contact area overall with injecting paste material,
So as to add the overall withdrawal resistance of anchor pole；On the other hand the contact surface and anchor pole of the fine thread reinforcing bar 8 and injecting paste material are whole
The direction of pull of body has a certain degree, so as to further increase the overall withdrawal resistance of anchor pole.
The description of the foregoing specific illustrative embodiment to the present invention is to illustrate and the purpose of illustration.These descriptions
Form disclosed in this invention is not limited the invention to, and it will be apparent that according to above-mentioned teaching, can much be changed
And change.The purpose of selecting and describing the exemplary embodiment is that explain that the certain principles of the present invention and its reality should
With so that those skilled in the art can realize and utilize the present invention a variety of exemplaries and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (6)
1. a kind of new grouted anchor bar and construction method with the adjustable wing of the present invention, it is characterised in that including：
The hollow bolt body of rod, part of the body of rod inside Rock And Soil be not threaded, and rod end is shaped as centrum shape, on the body of rod
It is even that injected hole is distributed with, the internal diameter annulus set equal with external diameter of rod body, annulus set and fine thread reinforcing bar are cased with outside the body of rod
And steel wire weld；It is hinged between fine thread reinforcing bar, is welded at afterbody of the body of rod close to pallet with the body of rod；Taut wire
After allowing annulus set to produce section shifting, steel wire is wound along body of rod back segment hand of spiral；Load onto in anchor pole back segment and only starch successively
Plug, pallet, nut, tightening nut apply pretightning force to anchor pole.
2. grouted anchor bar and construction method according to claim 1 with the adjustable wing, it is characterised in that annulus is put
90 ° of interval and fine thread reinforcing bar and steel wire weld, steel wire welded contact line and fine thread steel bar welding contact line are mutually perpendicular to.
3. grouted anchor bar and construction method according to claim 1 with the adjustable wing, it is characterised in that fine thread steel
It is hinged between muscle, is distributed along the body of rod, is welded in the body of rod close at pallet with the body of rod.
4. the grouted anchor bar and construction method with the adjustable wing according to claims 1, it is characterised in that in anchor pole
Wire pulling covered by annulus when squeezing into projected depth and produces a section and moves so that fine thread reinforcing bar around hinge rotates and forms one
Steel wire is wound along hand of spiral after fixed angle.
5. the grouted anchor bar and construction method with the adjustable wing according to claims 1, it is characterised in that in steel wire
Tense and around screw thread twine after put successively stop grouting plug, pallet, nut, and tightening nut give anchor pole apply pretightning force.
6. the grouted anchor bar and construction method with the adjustable wing according to claims 1, it is characterised in that including such as
Lower construction procedure：
1) prepare equipment, after drilling jumbo is in place, connect water supply, the power supply pipeline of drill jumbo；
2) cloth eye is measured, according to Soil Anchor Design spacing and the distribution situation of rock mass, the stratification of the soil body and joint, is marked with paint
Eye position；For stratification, joint development position, it should encrypt and lay eye position；
3) drill, drilled with drilling jumbo, drilling rod is inside the layer in rock mass or the soil body hole during drilling；Ensure that bore diameter omits
More than anchor bar body diameter；
4) empty and check, being passed through high-pressure blast with elbow steel pipe blows off aggregate chips and tiny stone in anchor pole fixing hole；Check anchor
Whether the hole depth of bar fixing hole, which meets, requires；
5) pack moistens, and pack is soaked in the water of cleaning, and (the specific time presses operation instruction within about 10~15 minutes for immersion
Book), pack is sufficiently humidified so as to but can not be solidified；
6) pack is filled in, and pack top is sent into behind bottom and then extracted out using pvc pipe of the aperture slightly larger than pack；
7) assemble and squeeze into anchor pole, the anchor rod body is put into the annulus set, anchor sleeve is pushed into anchor rod body end,
The fine thread reinforcing bar is welded together with anchor rod body in the body of rod other end, weld locations exist, by anchor pole after being welded
Anchor pole fixing hole is squeezed into, untill reaching projected depth；
8) fixing anchor bar, after the anchor rod body squeezes into projected depth, institute is put successively after anchor pole end anchorage agent solidification
Stop grouting plug, the pallet are stated, the steel wire is wound through the stop grouting plug and the pallet along anchor rod body hand of spiral,
The nut is loaded onto again, the nut is screwed and applies the pretightning force for meeting design requirement to anchor pole；
9) slip casting, the slurries mixed is connected into anchor rod body by air compressor machine and are injected into inside Rock And Soil.Anchor is used after slip casting
Gu agent blocks the injected hole of anchor rod body end in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941683.4A CN107558470A (en) | 2017-10-11 | 2017-10-11 | A kind of new grouted anchor bar and construction method with the adjustable wing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941683.4A CN107558470A (en) | 2017-10-11 | 2017-10-11 | A kind of new grouted anchor bar and construction method with the adjustable wing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107558470A true CN107558470A (en) | 2018-01-09 |
Family
ID=60984326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710941683.4A Pending CN107558470A (en) | 2017-10-11 | 2017-10-11 | A kind of new grouted anchor bar and construction method with the adjustable wing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107558470A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236338A (en) * | 2018-11-09 | 2019-01-18 | 石家庄铁道大学 | Slip casting type self-expanding anchor structure |
| CN112901229A (en) * | 2021-02-07 | 2021-06-04 | 山东科技大学 | Small coal pillar bidirectional pre-tightening grouting anchor rod anchor cable and construction method |
| CN113586114A (en) * | 2021-08-16 | 2021-11-02 | 石家庄铁道大学 | Radial expansion extrusion type anchor rod |
| CN115788539A (en) * | 2023-02-08 | 2023-03-14 | 中铁二十五局集团有限公司 | Advanced anchor rod capable of enlarging end grouting range |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884716A (en) * | 2006-06-05 | 2006-12-27 | 吴德兴 | Prestress anchor device |
| JP2008303659A (en) * | 2007-06-11 | 2008-12-18 | Kaizo Furukawa | Ground biting anchor and anchoring method |
| CN202544883U (en) * | 2012-04-12 | 2012-11-21 | 刘文江 | Self-boring full thread hollow grouting anchor rod |
| CN104295309A (en) * | 2014-10-30 | 2015-01-21 | 安徽理工大学 | Energy-gathered perforation hollow grouting anchor with reinforcement framework and construction method thereof |
| CN107142934A (en) * | 2017-07-17 | 2017-09-08 | 化学工业岩土工程有限公司 | A kind of expanding enlarged footing anchor bolt support |
-
2017
- 2017-10-11 CN CN201710941683.4A patent/CN107558470A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1884716A (en) * | 2006-06-05 | 2006-12-27 | 吴德兴 | Prestress anchor device |
| JP2008303659A (en) * | 2007-06-11 | 2008-12-18 | Kaizo Furukawa | Ground biting anchor and anchoring method |
| CN202544883U (en) * | 2012-04-12 | 2012-11-21 | 刘文江 | Self-boring full thread hollow grouting anchor rod |
| CN104295309A (en) * | 2014-10-30 | 2015-01-21 | 安徽理工大学 | Energy-gathered perforation hollow grouting anchor with reinforcement framework and construction method thereof |
| CN107142934A (en) * | 2017-07-17 | 2017-09-08 | 化学工业岩土工程有限公司 | A kind of expanding enlarged footing anchor bolt support |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236338A (en) * | 2018-11-09 | 2019-01-18 | 石家庄铁道大学 | Slip casting type self-expanding anchor structure |
| CN112901229A (en) * | 2021-02-07 | 2021-06-04 | 山东科技大学 | Small coal pillar bidirectional pre-tightening grouting anchor rod anchor cable and construction method |
| CN113586114A (en) * | 2021-08-16 | 2021-11-02 | 石家庄铁道大学 | Radial expansion extrusion type anchor rod |
| CN113586114B (en) * | 2021-08-16 | 2024-04-12 | 石家庄铁道大学 | Radial expansion extrusion type anchor rod |
| CN115788539A (en) * | 2023-02-08 | 2023-03-14 | 中铁二十五局集团有限公司 | Advanced anchor rod capable of enlarging end grouting range |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180109 |