CN109868807A - A kind of expansion Pulling-Resistant Anchor Rod stake suitable for weak soil and loose ground - Google Patents
A kind of expansion Pulling-Resistant Anchor Rod stake suitable for weak soil and loose ground Download PDFInfo
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- CN109868807A CN109868807A CN201910186661.0A CN201910186661A CN109868807A CN 109868807 A CN109868807 A CN 109868807A CN 201910186661 A CN201910186661 A CN 201910186661A CN 109868807 A CN109868807 A CN 109868807A
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- steel strand
- strand wires
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- soil
- engineering bag
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Abstract
The present invention relates to a kind of expansion Pulling-Resistant Anchor Rod stakes suitable for weak soil and loose ground, solve the problems, such as that existing resistance to plucking bar stake is unconspicuous to the function and effect of foundation pit enclosure, slope retaining, tunnel reinforcement under the geological conditions of weak soil and loose ground.Present apparatus anchor pole bottom center is Grouting Pipe, cylindrical type soil engineering bag is arranged with outside Grouting Pipe, it seals the top and bottom of soil engineering bag, the axial steel strand wires that several axis extend are provided on the outside of soil engineering bag, upper end or lower end and the anchor pole of axial steel strand wires are fixed, the other end is free end, injected hole is opened up along the helix around tube wall on the tube wall of the Grouting Pipe, the outer helical of the soil engineering bag has tied up spiral steel strand wires, and the spiral steel strand wires are consistent with the injected hole hand of spiral that spiral opens up, screw pitch is identical, spiral line position mutual dislocation.The present invention forms the alternate spiral segmental pattern of degrees of expansion size in figure layer, cooperates the axial steel strand wires of undaform, can provide more reliable resistance to plucking effect.
Description
Technical field
The invention belongs to building engineering fields, are related to a kind of resistance to plucking anchor cable structure, in particular to it is a kind of be suitable for weak soil and
The expansion Pulling-Resistant Anchor Rod stake of loose ground.
Background technique
Anchor pole is the member system structure that Rock And Soil is reinforced, and is acted on by the longitudinal pulling force of anchor rod body, overcomes Rock And Soil
The shortcomings that tensile capacity is well below anti-pressure ability increases the cohesiveness of Rock And Soil.It is mainly improved from mechanics viewpoint
The cohesive strength C and internalfrictionangleφ of country rock body.Anchor pole connects as the tensional element for going deep into stratum, its one end and engineering structure
It connects, the other end gos deep into stratum, and whole anchor pole is divided into free segment and anchoring section, and free segment, which refers to, reaches the pulling force at anchor pole head
The region of anchoring body, function are to apply prestressing force to anchor pole.It, can side slope, tunnel and dam body progress in engineering technology
It reinforces.In practical architectural engineering, anchor pole is as a kind of support form wide application in Foundation Pit Support Engineering, tunnel reinforcement and branch
Nurse's journey.One end of anchor pole is connect with enclosure wall or grit, and the other end is anchored in good ground, makes to act on building enclosure
On Water And Earth Pressures, anchoring section is transmitted to by free segment, then axis force of anchor is transmitted in steady soil by anchoring section.It is existing
In urban construction fast development, urban land is gradually rare, we, which are also faced with, carries out work under the conditions of the soil body worse and worse
Cheng Jianshe.Under the conditions of poor geology, such as under the geological conditions of weak soil and loose ground, conventional anchor supporting breakout capacity by
Geological conditions influences greatly, to be no longer able to satisfy demand, unobvious to the function and effect of foundation pit enclosure, slope retaining, tunnel reinforcement.
Summary of the invention
It is an object of the invention to solve existing resistance to plucking bar stake under the conditions of poor geology, such as weak soil and loose ground
Geological conditions under, conventional anchor supporting breakout capacity is influenced by geological conditions, be no longer able to satisfy demand, to foundation pit enclosure,
It is anti-to provide a kind of expansion suitable for weak soil and loose ground for the unconspicuous problem of function and effect of slope retaining, tunnel reinforcement
Anchor pile is pulled out, the breakout capacity of entire resistance to plucking bar stake is improved, there is better supporting, consolidation effect.
The technical solution adopted by the present invention to solve the technical problems is: a kind of expansion suitable for weak soil and loose ground
Pulling-Resistant Anchor Rod stake, including the anchor pole in bottom end insertion soil layer, it is characterised in that: the anchor pole is hollow structure, in anchor pole bottom end
The heart is Grouting Pipe, and cylindrical type soil engineering bag, the top and bottom sealing of soil engineering bag, the outer side ring week of soil engineering bag are arranged with outside Grouting Pipe
The axial steel strand wires that several axis extend are evenly arranged with, upper end or lower end and the anchor pole of axial steel strand wires are fixed, the other end
For free end, injected hole, the outer helical of the soil engineering bag are opened up along the helix around tube wall on the tube wall of the Grouting Pipe
Spiral steel strand wires are tied up, the spiral steel strand wires are consistent with the injected hole hand of spiral that spiral opens up, screw pitch is identical, helix
Position mutual dislocation.The present apparatus is suitable for soft soil layer and loose ground, only need to be by bobbing machine by reinforcing bar in soft soil layer
It is shaken with Grouting Pipe in burying；And need to drill in advance in loose ground, drilling depth is left beyond Soil Anchor Design length 0.5m
Hole depth after drilling, is checked with a polyethylene pipe, and with high-pressure blast aperture blowing, blow clean to dust in hole, and hole depth is or not the right side
When less than Soil Anchor Design length, polyethylene pipe is extracted, aperture is stoppered.Soil engineering bag outer surface, which is sticked, axial steel strand wires, if elder generation
Drilling is inserted into the construction procedure of anchor pole, and axial steel strand wires can choose top and bottom and anchor pole is fixed；If vibration
Insertion, then axial steel strand wires are preferably that lower end is fixed with anchor pole.Spiral steel strand wires can be tied up for tension type, or relaxation
It ties up.During slip casting, soil engineering bag is aligned in the position rapid expanding being aligned with injected hole helix with spiral steel strand wires
Position is limited can not to be expanded or slowly expand, and make soil engineering bag after the completion of slip casting, form the alternate spiral of degrees of expansion size
Segmental pattern, axial steel strand wires are then along expansion segment along axially in undaform.Above structure and soil layer to be engaged effect more preferable, can be with
More reliable resistance to plucking effect is provided.In the prior art, anchor pole lower end is usually integrated the expansion arc that is in the form of a column of expansion, in weak soil and
It is still allowed in loose ground and is easy sliding；In contrast, the soil engineering bag expansion structure of the spiral expansion of the application is more advantageous to and soil
The combination of layer.And the scheme grouting amount of the application is less, and sub-surface is disturbed smaller, is less susceptible to occur what ground was filled with
Situation.
Preferably, the injected hole axile displacement distance that the spiral steel strand wires and spiral open up is spiral steel strand wires screw pitch
Half.
Preferably, the inside of axial steel strand wires is arranged in the spiral steel strand wires.Axial steel strand wires are in expansion process
Sliding opposite with soil engineering bag outer surface is not limited by spiral steel strand wires.
Preferably, the outer wall of the soil engineering bag is additionally provided with the spiral threading loop along the setting of spiral steel strand wires direction.Spiral
Threading loop limits the cabling of spiral steel strand wires.
Preferably, the outer wall of the soil engineering bag is additionally provided with the axial threading loop along the setting of axial steel strand wires direction.It is axial
Threading loop limits the cabling of axial steel strand wires.
Preferably, the free end of the axial direction steel strand wires is banded on anchor pole by elastic strapping.Elastic strapping
Prevent the free end of axial steel strand wires from scattering during anchor pole is inserted into soil layer；When slip casting, the free ends of axial steel strand wires can be with
It pulls out and from elastic strapping.
Soil engineering bag of the present invention forms the alternate spiral segmental pattern of degrees of expansion size after the completion of slip casting, cooperates undaform
Axial steel strand wires, be engaged that effect is more preferable with soil layer, more reliable resistance to plucking effect can be provided；And the solution of the present invention slip casting
Amount is less, and sub-surface is disturbed smaller, is less susceptible to the case where ground is filled with occur.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is a kind of structural schematic diagram of the present invention.
Fig. 2 is the spiral strand structure schematic diagram of soil engineering bag outer wall of the present invention.
Fig. 3 is a kind of expansion structure schematic diagram of the present invention.
In figure: 1, Grouting Pipe, 2, injected hole, 3, soil engineering bag, 4, axial steel strand wires, 5, spiral steel strand wires, 6, spiral threading
Loop.
Specific embodiment
Below by specific embodiment and in conjunction with attached drawing, the present invention is further described.
Embodiment: a kind of expansion Pulling-Resistant Anchor Rod stake suitable for weak soil and loose ground, as shown in Figure 1, 2.Present apparatus packet
The anchor pole in bottom end insertion soil layer is included, the anchor pole is hollow structure, and anchor pole bottom center is Grouting Pipe 1, is arranged outside Grouting Pipe
There is cylindrical type soil engineering bag 3, several axis that are evenly arranged in outer side ring week of the top and bottom sealing of soil engineering bag, soil engineering bag extend
Axial steel strand wires 4, lower end and the anchor pole of axial steel strand wires fix, and the other end is free end.Along circular on the tube wall of Grouting Pipe 1
The helix of tube wall opens up injected hole 2, and the outer helical of the soil engineering bag has tied up spiral steel strand wires 5, the spiral steel strand wires
It is consistent with the injected hole hand of spiral that spiral opens up, screw pitch is identical, spiral line position mutual dislocation, axile displacement distance be spiral
The half of steel strand wires screw pitch.The inside of axial steel strand wires 4 is arranged in spiral steel strand wires 5.The outer wall of soil engineering bag is additionally provided with along spiral
The spiral of steel strand wires direction setting threads loop 6.The outer wall of soil engineering bag, which can also select, to be opened up along the setting of axial steel strand wires direction
Axial threading loop.The free end of axial steel strand wires is banded on anchor pole by elastic strapping.
The present apparatus is suitable for soft soil layer and loose ground, only need to be by bobbing machine by reinforcing bar and slip casting in soft soil layer
During Guan Zhen buries；And need to drill in advance in loose ground, drilling depth will be beyond Soil Anchor Design length 0.5m or so, drilling
After, hole depth is checked with a polyethylene pipe, and with high-pressure blast aperture blowing, blow clean to dust in hole, and hole depth is no less than anchor
When bar design length, polyethylene pipe is extracted, aperture is stoppered.Soil engineering bag outer surface, which is sticked, axial steel strand wires, if first drilling again
It is inserted into the construction procedure of anchor pole, axial steel strand wires can choose top and bottom and anchor pole is fixed；It is inserted into if vibration, then
Axial steel strand wires are preferably that lower end is fixed with anchor pole.Spiral steel strand wires can be tied up for tension type, or relaxation is tied up.Note
During slurry, soil engineering bag in the position rapid expanding being aligned with injected hole helix, and the position being aligned with spiral steel strand wires by
Limit can not be expanded or slowly be expanded, and make soil engineering bag after the completion of slip casting, form the alternate spiral segmental pattern of degrees of expansion size,
Axial steel strand wires are then along expansion segment along axially in undaform.Above structure and soil layer to be engaged effect more preferable, can provide more
Reliable resistance to plucking effect.
Claims (6)
1. a kind of expansion Pulling-Resistant Anchor Rod stake suitable for weak soil and loose ground, special including the anchor pole in bottom end insertion soil layer
Sign is: the anchor pole is hollow structure, and anchor pole bottom center is Grouting Pipe, is arranged with cylindrical type soil engineering bag outside Grouting Pipe, soil
The top and bottom of work bag are sealed, the axial steel strand wires for being evenly arranged with several axis outer side ring week and extending of soil engineering bag, axial
Upper end or lower end and the anchor pole of steel strand wires are fixed, and the other end is free end, along around tube wall on the tube wall of the Grouting Pipe
Helix opens up injected hole, and the outer helical of the soil engineering bag has tied up spiral steel strand wires, and the spiral steel strand wires are opened with spiral
If the injected hole hand of spiral it is consistent, screw pitch is identical, spiral line position mutual dislocation.
2. a kind of expansion Pulling-Resistant Anchor Rod stake suitable for weak soil and loose ground according to claim 1, it is characterised in that:
The injected hole axile displacement distance that the spiral steel strand wires and spiral open up is the half of spiral steel strand wires screw pitch.
3. a kind of expansion Pulling-Resistant Anchor Rod stake suitable for weak soil and loose ground according to claim 1, it is characterised in that:
The inside of axial steel strand wires is arranged in the spiral steel strand wires.
4. a kind of expansion Pulling-Resistant Anchor Rod stake suitable for weak soil and loose ground according to claim 1 or 2 or 3, special
Sign is: the outer wall of the soil engineering bag is additionally provided with the spiral threading loop along the setting of spiral steel strand wires direction.
5. a kind of expansion Pulling-Resistant Anchor Rod stake suitable for weak soil and loose ground according to claim 1 or 2 or 3, special
Sign is: the outer wall of the soil engineering bag is additionally provided with the axial threading loop along the setting of axial steel strand wires direction.
6. a kind of expansion Pulling-Resistant Anchor Rod stake suitable for weak soil and loose ground according to claim 1 or 2 or 3, special
Sign is: the free end of the axial direction steel strand wires is banded on anchor pole by elastic strapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186661.0A CN109868807B (en) | 2019-03-13 | 2019-03-13 | Expansion uplift anchor pile suitable for soft soil and loose rock soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186661.0A CN109868807B (en) | 2019-03-13 | 2019-03-13 | Expansion uplift anchor pile suitable for soft soil and loose rock soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109868807A true CN109868807A (en) | 2019-06-11 |
| CN109868807B CN109868807B (en) | 2021-08-31 |
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ID=66920203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910186661.0A Active CN109868807B (en) | 2019-03-13 | 2019-03-13 | Expansion uplift anchor pile suitable for soft soil and loose rock soil |
Country Status (1)
| Country | Link |
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| CN (1) | CN109868807B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0366825A (en) * | 1989-08-07 | 1991-03-22 | Asahi Chem Ind Co Ltd | Pile having bag, for burying process |
| JP2001107357A (en) * | 1999-10-07 | 2001-04-17 | Traverse:Kk | Ribbed reinforced concrete pile |
| CN201013018Y (en) * | 2007-01-19 | 2008-01-30 | 厉瑞祥 | Injection anchor bar of plasm capsule bag |
| CN102168419A (en) * | 2011-05-31 | 2011-08-31 | 中冶集团武汉勘察研究院有限公司 | Method for compounding anchor rod by geotextile reinforcing |
| CN103726498A (en) * | 2014-01-21 | 2014-04-16 | 山东正元建设工程有限责任公司 | Grouting expanding pre-stressed anchor rod of fiber bag and using method thereof |
| CN203924036U (en) * | 2014-05-16 | 2014-11-05 | 杭州江润科技有限公司 | A kind of pile for prestressed pipe of outsourcing active material pile body |
| CN106351231A (en) * | 2016-08-27 | 2017-01-25 | 中国二十二冶集团有限公司 | Construction method for increasing uplift bearing capacity of soil nailing walls |
| CN206448277U (en) * | 2016-04-29 | 2017-08-29 | 杜华 | A kind of software rhizoma nelumbinis shape anchor pole |
| CN206941582U (en) * | 2017-03-20 | 2018-01-30 | 北京中岩大地科技股份有限公司 | A kind of more enlarged footing jet grouting anchor rod rod devices of cloth-bag type |
-
2019
- 2019-03-13 CN CN201910186661.0A patent/CN109868807B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0366825A (en) * | 1989-08-07 | 1991-03-22 | Asahi Chem Ind Co Ltd | Pile having bag, for burying process |
| JP2001107357A (en) * | 1999-10-07 | 2001-04-17 | Traverse:Kk | Ribbed reinforced concrete pile |
| CN201013018Y (en) * | 2007-01-19 | 2008-01-30 | 厉瑞祥 | Injection anchor bar of plasm capsule bag |
| CN102168419A (en) * | 2011-05-31 | 2011-08-31 | 中冶集团武汉勘察研究院有限公司 | Method for compounding anchor rod by geotextile reinforcing |
| CN103726498A (en) * | 2014-01-21 | 2014-04-16 | 山东正元建设工程有限责任公司 | Grouting expanding pre-stressed anchor rod of fiber bag and using method thereof |
| CN203924036U (en) * | 2014-05-16 | 2014-11-05 | 杭州江润科技有限公司 | A kind of pile for prestressed pipe of outsourcing active material pile body |
| CN206448277U (en) * | 2016-04-29 | 2017-08-29 | 杜华 | A kind of software rhizoma nelumbinis shape anchor pole |
| CN106351231A (en) * | 2016-08-27 | 2017-01-25 | 中国二十二冶集团有限公司 | Construction method for increasing uplift bearing capacity of soil nailing walls |
| CN206941582U (en) * | 2017-03-20 | 2018-01-30 | 北京中岩大地科技股份有限公司 | A kind of more enlarged footing jet grouting anchor rod rod devices of cloth-bag type |
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| CN109868807B (en) | 2021-08-31 |
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Denomination of invention: An expansion uplift anchor pile suitable for soft soil and loose rock soil Effective date of registration: 20220704 Granted publication date: 20210831 Pledgee: China Construction Bank Co.,Ltd. Fuyang Branch of Hangzhou Pledgor: GEOTECHNICAL TECHNOLOGY Co.,Ltd. Registration number: Y2022980009767 |