CN102839661A - Construction technology of reelingly stirring to eject anchor tube pile - Google Patents
Construction technology of reelingly stirring to eject anchor tube pile Download PDFInfo
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- CN102839661A CN102839661A CN2012103577929A CN201210357792A CN102839661A CN 102839661 A CN102839661 A CN 102839661A CN 2012103577929 A CN2012103577929 A CN 2012103577929A CN 201210357792 A CN201210357792 A CN 201210357792A CN 102839661 A CN102839661 A CN 102839661A
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Abstract
The invention discloses a construction technology of reelingly stirring to eject an anchor tube pile, comprising the following steps: 1) positioning: aligning a hollow anchor pipe to a required hole site; 2) drilling: driving the anchor pipe to drill in soil with anchor rod construction equipment; 3) grouting: drilling while ejecting cement slurry to the soil through the anchor pipe with grouting equipment; 4) pile-forming: separating the construction equipment from the anchor pipe after forming the anchor pipe pile for reelingly stirring to eject, and locking a shell cover. The beneficial effects of construction technology are as follows: 1) using the anchor rod construction technology and the grouting technology to simultaneously work, constructing to reelingly stir to eject the anchor pipe in non rock soil of various simple and complex geological conditions, thereby effectively overcoming defects of difficult pore-forming and easy hole collapse of traditional anchor in soft soil layer when constructing, and the like; 2) simultaneously performing to reelingly stir to eject the anchor pipe and the grouting technology, no need dado, disposable pile-forming, thereby greatly simplifying the construction technology, quickening the construction speed and reducing the engineering cost.
Description
Technical field
The present invention relates to the support technology of a kind of soil excavation and stability of slope, especially a kind of revolving stirred injection anchor tube pile constructing process.
Background technology
At present, the soil anchor supporting is widely used in foundation pit supporting project and stability of slope engineering.Soil anchor supporting job practices commonly used is first boring, after insert metal material, slip casting again.This construction technology not only the construction period long, and the anchor pole stake diameter that forms is little, uplift resistance is little.For satisfying the engineering design requirement, often adopt dual mode: 1, improve single anchor pole bearing capacity: the length, secondary grouting, the stake end that increase anchor pole expand head or apply prestressing force etc.; 2, improve anchor pole density.
When adopting the 1st kind of method, exist the construction technology complicacy, speed of application is slow, the more high shortcoming of construction costs.When particularly in soil layers such as weak soil, gravelly soil, constructing, can't pore-forming or the pore-forming difficulty, the hole of usually collapsing.And when adopting the 2nd kind of method, be prone to produce crowd's anchor effect, cause anchor pole crowd's load-carrying efficiency to reduce and space enclosing structure is prone to produce moderate finite deformation.
This shows that the bolt support technology of present stage all exists certain defective, it is very necessary developing new bolt support technology.
Summary of the invention
The invention solves the shortcoming of above-mentioned prior art, provide revolving that a kind of technology is simple, speed of application is fast, expense is low, effective to stir injection anchor tube pile constructing process.
A kind of revolving stirred injection anchor tube pile constructing process, it is characterized in that:
Comprise the steps:
1), locatees, hollow anchor tube mating holes position;
2), creep into, utilize anchor bolt construction equipment to drive anchor tube and creep into the soil body;
3), slip casting, creep into and adopt grouting equipment to pass through anchor tube simultaneously to soil body gunite;
4), pile, form revolve stir spray the anchor tube stake after, construction equipment and anchor tube disengaging, and locking, end socket.
When creeping into,, make to revolve to stir and spray each section of anchor tube stake diameter of section difference through the rotating speed and the grouting pressure of rig in control anchor tube rate of penetration, the construction equipment.
Said anchor tube rate of penetration is the 1-120 centimeters/minute, 2-30 rev/min of rig rotating speed, grouting pressure 5-30MPa.
Major diameter place, described anchor tube stake cross section, rate of penetration is the 1-70 centimeters/minute, 2-15 rev/min of rig rotating speed, grouting pressure 5-30Mpa; Minor diameter place, described anchor tube stake cross section, rate of penetration 50-120 centimeters/minute, 5-30 rev/min of rig rotating speed, grouting pressure is less than 20Mpa.
When the soil layer of construction is the soft soil body, can adopt lower grouting pressure, when needing to form the major diameter pile body, can suspend according to actual conditions and creep into, revolve and stir gunite 1-10 minute, treat to creep into once more after the pile body diameter reaches design load.
For the softer soil body of soil property, can adopt common anchor tube directly to creep into.Described anchor tube is the long rod type of hollow, and the opening of slip casting is outwards brought and be provided with in this anchor tube front end termination together, and tube wall is provided with injected hole, and the rear end is provided with stop grouting plug.The effect of opening is a gunite forwards, and softening the place ahead soil body is convenient to creep into.
For than the pan soil body, can on anchor tube front end tube wall, increase flight and be beneficial to creep into, can also weld the blade that becomes 10 ° of-70 ° of angles with the anchor pole normal section and revolve and stir reaming.Flight pitch 5-15cm, external diameter 15-40cm; Blade pitgh is 5-15cm, length 5-15cm.Wherein the size of the size of the quantity of injected hole and position, flight, blade and quantity all can suitably be adjusted according to actual conditions.
The invention has the beneficial effects as follows:
1), utilizes the operation simultaneously of anchor bolt construction technology and slurry injection technique; Construction is revolved and is stirred the stake of injection anchor tube in the non-rock soil of various simple and complex geological conditions; Be applicable to Quaternary system (discipline) scall and residual slide rock stratum, silt soil, mucky silt, cohesive soil, silt, loess, sand, gravel cobble, artificial earth fill and gravelly soil stratum etc.; Pore-forming difficulty when having overcome traditional anchor pole effectively and in soft layer, constructing, the shortcomings such as hole of collapsing easily.
2), retaining wall and ban the use of mud off when the soil bolt construction technique normalizing requires boring, construction cost is high; Revolve to stir and spray the boring of anchor tube pile driving construction and carry out simultaneously with slip casting, do not need retaining wall, disposable pile has been simplified construction technology greatly, has accelerated speed of application and has reduced engineering cost.
3), under loose complex geological condition the construction soil bolt, need special equipment and facility; Simple and bad ground construction revolved to stir spray the anchor tube stake and then do not need special equipment, only normally used anchor bolt construction equipment of need and grouting equipment are convenient to the large-scale promotion of this technology.
4), revolve and stir that to spray anchor tube pile driving construction angle of inclination be 0 °-90 ° of horizontal sextant angles, can in scall, form the pile anchor head and the piled anchor body that become diameter, increased and revolved the sectional dimension of stirring the stake of injection anchor tube.Form anchor tube stake diameter 0.1-1.0m, its uplift resistance is several times of traditional soil bolts or tens times, can reach tens of tons.
Description of drawings
Fig. 1 is the front view and the generalized section of the various difform anchor tube stakes of the present invention;
Fig. 2 is an anchor tube form sketch map among the present invention;
Fig. 3 is a construction schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further:
This revolving stirred injection anchor tube pile constructing process, comprises the steps:
1), locatees, hollow anchor tube mating holes position;
2), creep into, utilize anchor bolt construction equipment to drive anchor tube and creep into the soil body;
3), slip casting, creep into and adopt grouting equipment to pass through anchor tube simultaneously to soil body gunite;
4), pile, form revolve stir spray the anchor tube stake after, construction equipment and anchor tube disengaging, and locking, end socket.
When creeping into,, make to revolve to stir and spray anchor tube stake 2 each section diameter differences through rig rotating speed and grouting pressure in control rate of penetration, the construction equipment.At anchor tube stake 2 major diameter places, rate of penetration is the 1-70 centimeters/minute, 2-15 rev/min of rig rotating speed, and grouting pressure 5-30MPa also can suspend according to actual conditions and creep into, and revolves and stirs injection water earth 1-10 minute, treats to creep into once more after the pile body diameter reaches design load; At anchor tube stake 2 minor diameter places, rate of penetration is the 50-120 centimeters/minute, 5-30 rev/min of rig rotating speed, and grouting pressure is less than 20MPa.
When the soil body is weak soil, adopt common anchor tube 1 directly to creep into.Anchor tube 1 is the long rod type of hollow, and the opening 3 of slip casting is outwards brought and be provided with in this anchor tube front end termination together, and tube wall is provided with injected hole 4, and the rear end is provided with stop grouting plug 5.During slip casting, the slip casting flexible pipe in the grouting equipment passes stop grouting plug 5, in anchor tube 1 body, injects cement paste; Stop grouting plug 5 is used to prevent that the cement paste in the body from flowing out, and keeps the certain pressure of cement paste in the body simultaneously.
When anchor tube 1 crept into while rotating, anchor tube front opening 3 is gunite forwards under pressure, and the softening soil body is convenient to creep into.Injected hole 4 outside gunites, cutting soil forms cement mixing soil, reaches the purpose of control pile body diameter of section size through controlled pressure.
When the soil body is pan soil, need on common anchor tube front tube wall, increases flight 6 and be beneficial to creep into, can also weld the blade 7 that becomes 10 ° of-70 ° of angles with the anchor pole normal section and revolve and stir reaming.When creeping into, form basic aperture, adopt grouting equipment to carry out the Intermediate High Pressure rotary jet grouting and enlarge the aperture, thereby disposable formation is the resistance to plucking body of core with the anchor tube, increase revolving of frictional resistance with the cylindric cement-soil of size and stir the stake of injection anchor tube with blade 7 cutting soils.
When adopting traditional bolt support technology not meet design requirement, can adopt construction technology of the present invention.Revolve to stir and spray the anchor tube pile driving construction and be similar to anchor pole, the anchor tube pile length is shorter, and it is big to form the pile body diameter, and its uplift resistance substantially exceeds common bolt.Revolve and stir that to spray anchor tube pile driving construction equipment simple, easy construction, cost is low, is applicable to foundation ditch retaining support and slope soil stabilization works, also can be used for the pressure bearing pile or the stake of underground construction anti-floating of ground stabilization.
The present invention can draw revolving of extensively adopting in anchor engineering, control building inclination engineering, tunnelling works and the cavity engineering to stir the stake of injection anchor tube at foundation pit supporting project, slope support engineering, rectifying of leaned building engineering, underground emergency work, the underground deep layer of various soil layers.According to different soil layers, to confirm to revolve through Theoretical Calculation and stir uplift resistance or the bearing capacity that sprays the anchor tube stake, design is revolved and is stirred the length of spraying the anchor tube stake and each section diameter to reach the designing requirement of engineering, and the safety that guarantees engineering is with stable.Under engineering construction situation smooth, safe, that on schedule accomplish, cost and construction costs have been reduced.
Revolve and stir that to spray the anchor tube pile constructing process easy, its length is short, diameter is big, uplift resistance or bearing capacity are big, in soil layer, can churning go out multiple difform pile body.The vertical surface of soil layer or domatic on, utilize anchor bolt construction equipment to squeeze into hollow anchor tube, creep into and adopt grouting equipment to carry out slip casting simultaneously, disposable formation is revolved to stir and is sprayed the anchor tube stake, speed of application is fast.Grouting pressure is lower than 30MPa, in soil layer, can spray multiple difform pile body, expanded diameter 0.1-1.0m.
Its construction technology process is: rig is in place → anchor tube is to mesopore position → creep into hollow anchor tube, revolves to stir gunite → formation and revolve to stir and spray the anchor tube stake.
Claims (6)
1. one kind revolves to stir and sprays the anchor tube pile constructing process, it is characterized in that:
Comprise the steps:
1), locatees, hollow anchor tube (1) mating holes position;
2), creep into, utilize anchor bolt construction equipment to drive anchor tube (1) and creep into the soil body;
3), slip casting, creep into and adopt grouting equipment to pass through anchor tube (1) simultaneously to soil body gunite;
4), pile, form revolve stir spray anchor tube stake (2) after, construction equipment and anchor tube disengaging, and locking, end socket.
2. according to claim 1 revolving stirred injection anchor tube pile constructing process, it is characterized in that: when creeping into, through the rotating speed and the grouting pressure of rig in control anchor tube rate of penetration, the construction equipment, make to revolve to stir and spray anchor tube stake (2) each section diameter of section difference.
3. according to claim 2 revolving stirred injection anchor tube pile constructing process, and it is characterized in that: said anchor tube (1) rate of penetration is the 1-120 centimeters/minute, 2-30 rev/min of rig rotating speed, grouting pressure 5-30MPa.
4. according to claim 3 revolving stirred injection anchor tube pile constructing process, it is characterized in that: major diameter place, described anchor tube stake (2) cross section, and rate of penetration is the 1-70 centimeters/minute, 2-15 rev/min of rig rotating speed, grouting pressure 5-30Mpa; Minor diameter place, described anchor tube stake (2) cross section, rate of penetration 50-120 centimeters/minute, 5-30 rev/min of rig rotating speed, grouting pressure is less than 20Mpa.
5. according to claim 1 revolving stirred injection anchor tube pile constructing process; It is characterized in that: described anchor tube (1) is the long rod type of hollow; The opening (3) of slip casting is outwards brought and be provided with in this anchor tube front end termination together, and tube wall is provided with injected hole (4), and the rear end is provided with stop grouting plug (5).
6. according to claim 5 revolving stirred injection anchor tube pile constructing process, it is characterized in that: be distributed with flight (6) on described anchor tube (1) the front end tube wall, be welded with the blade (7) that becomes 10 ° of-70 ° of angles with the anchor pole normal section following closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103577929A CN102839661A (en) | 2012-09-20 | 2012-09-20 | Construction technology of reelingly stirring to eject anchor tube pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103577929A CN102839661A (en) | 2012-09-20 | 2012-09-20 | Construction technology of reelingly stirring to eject anchor tube pile |
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| CN102839661A true CN102839661A (en) | 2012-12-26 |
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| CN2012103577929A Pending CN102839661A (en) | 2012-09-20 | 2012-09-20 | Construction technology of reelingly stirring to eject anchor tube pile |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971008A (en) * | 2015-04-29 | 2016-09-28 | 孔志坚 | Support method for basement of subway station |
| CN106498941A (en) * | 2016-12-09 | 2017-03-15 | 绍兴明煌建材科技有限公司 | A kind of pile foundation of light section steel structure bridge and its construction method |
| CN109595020A (en) * | 2018-12-30 | 2019-04-09 | 浙江工业大学 | A kind of slip casting bellows enlarged footing anchor pole and application method for tunnel correction |
| CN109667266A (en) * | 2018-10-18 | 2019-04-23 | 中国海洋大学 | From construction method, device and its matched dedicated tubular pole for boring large-diameter tubular pile |
| CN110067253A (en) * | 2019-06-05 | 2019-07-30 | 招商局重庆交通科研设计院有限公司 | From anchoring miniature steel pipe anchoring pile |
| CN115030188A (en) * | 2022-07-20 | 2022-09-09 | 中建八局第二建设有限公司 | Self-drilling anchor rod foundation pit supporting method for rock-saltpeter area |
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| CN1106492A (en) * | 1994-11-23 | 1995-08-09 | 李献奎 | Construction technique and equipment of perforating-stirring grouting rolling drilling |
| JP2002061182A (en) * | 2000-08-22 | 2002-02-28 | Shin Gijutsu Koei Kk | Construction method for stabilizing face of slope |
| CN2567341Y (en) * | 2002-08-28 | 2003-08-20 | 淮南矿业(集团)有限责任公司科技开发中心 | Self-archoring slip casting archoring-balt |
| CN2568815Y (en) * | 2002-05-31 | 2003-08-27 | 刘维杰 | Strengthening slip casting anchor stock |
| CN1657711A (en) * | 2005-03-21 | 2005-08-24 | 严平 | Rotary spray anchoring pile construction process |
| KR100771904B1 (en) * | 2005-03-08 | 2007-11-21 | 방윤경 | Earth Reinforcement System by Using Bamboo Reinforcement |
| CN102587366A (en) * | 2012-03-13 | 2012-07-18 | 胜利油田胜利工程建设（集团）有限责任公司 | Self-drilling type spiral anchor rod and construction process using self-drilling type spiral anchor rod for grouting along with drilling, stirring and curing |
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2012
- 2012-09-20 CN CN2012103577929A patent/CN102839661A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1106492A (en) * | 1994-11-23 | 1995-08-09 | 李献奎 | Construction technique and equipment of perforating-stirring grouting rolling drilling |
| JP2002061182A (en) * | 2000-08-22 | 2002-02-28 | Shin Gijutsu Koei Kk | Construction method for stabilizing face of slope |
| CN2568815Y (en) * | 2002-05-31 | 2003-08-27 | 刘维杰 | Strengthening slip casting anchor stock |
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| KR100771904B1 (en) * | 2005-03-08 | 2007-11-21 | 방윤경 | Earth Reinforcement System by Using Bamboo Reinforcement |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971008A (en) * | 2015-04-29 | 2016-09-28 | 孔志坚 | Support method for basement of subway station |
| CN106498941A (en) * | 2016-12-09 | 2017-03-15 | 绍兴明煌建材科技有限公司 | A kind of pile foundation of light section steel structure bridge and its construction method |
| CN109667266A (en) * | 2018-10-18 | 2019-04-23 | 中国海洋大学 | From construction method, device and its matched dedicated tubular pole for boring large-diameter tubular pile |
| CN109595020A (en) * | 2018-12-30 | 2019-04-09 | 浙江工业大学 | A kind of slip casting bellows enlarged footing anchor pole and application method for tunnel correction |
| CN109595020B (en) * | 2018-12-30 | 2023-09-29 | 浙江工业大学 | Grouting bag type enlarged head anchor rod for tunnel deviation correction and use method |
| CN110067253A (en) * | 2019-06-05 | 2019-07-30 | 招商局重庆交通科研设计院有限公司 | From anchoring miniature steel pipe anchoring pile |
| CN115030188A (en) * | 2022-07-20 | 2022-09-09 | 中建八局第二建设有限公司 | Self-drilling anchor rod foundation pit supporting method for rock-saltpeter area |
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| PB01 | Publication | ||
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Application publication date: 20121226 |