CN105780763B - Mesoporous vibrates the construction method of casing retaining wall long auger guncreting pile - Google Patents
Mesoporous vibrates the construction method of casing retaining wall long auger guncreting pile Download PDFInfo
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- CN105780763B CN105780763B CN201510895397.XA CN201510895397A CN105780763B CN 105780763 B CN105780763 B CN 105780763B CN 201510895397 A CN201510895397 A CN 201510895397A CN 105780763 B CN105780763 B CN 105780763B
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- 238000010276 construction Methods 0.000 title claims abstract description 47
- 238000005553 drilling Methods 0.000 claims abstract description 67
- 239000004567 concrete Substances 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims abstract description 12
- 230000010412 perfusion Effects 0.000 claims abstract description 11
- 230000015271 coagulation Effects 0.000 claims abstract description 7
- 238000005345 coagulation Methods 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 9
- 239000000284 extract Substances 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 14
- 239000002002 slurry Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 238000009412 basement excavation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the construction methods that mesoporous vibrates casing retaining wall long auger guncreting pile, including：Surveying setting-out fixed pile makes long-spiral drilling machine align piles position；Start long-spiral drilling machine driving auger stem and drill bit rotary drilling vertically downward；Meanwhile starting mesoporous vibration hammer driving casing and following up vertically downward, with proceeding to predetermined stake end depth；Auger stem idle running discharge bottom dregs；Drilling rod is promoted, concrete is fed into stake holes internal pressure, the guncreting when carrying auger stem after carrying auger stem to predetermined altitude, stops concrete perfusion；After the completion of perfusion, casing is made to stay in stake, long-spiral drilling machine is removed into stake holes position, is inserted into joint bar device in the concrete being perfused in vibration together together with steel reinforcement cage with crane；After steel reinforcement cage is inserted to predetermined depth, joint bar device is extracted, casing is extracted completely, bored concrete pile coagulation forming；The present invention has many advantages, such as that filling quality of pile height, construction safety, of low cost, speed is fast, environmentally friendly, result is practical.
Description
Technical field
The present invention relates to building foundation engineering technical fields more particularly to a kind of mesoporous to vibrate casing retaining wall long auger
The construction method of guncreting pile.
Background technology
Bored concrete pile have in construction it is without friction, without squeezing soil, noise is small, is suitable for and is used in City Building City Regions
Advantage obtains relatively broad application in construction projects.According to the difference of pore-forming technique, bored concrete pile can be divided into drill-pouring
Stake, driven cast-in-place pile, manually digging hole filling pile etc..
Cast-in-situ bored pile refers to drills out stake holes, and the casting concrete in hole using drilling machine（Or steel is first hung in hole
Muscle cage）And total replacement at stake.It is divided into whether using in mud off construction technology in drilling process according to drilling machine
For two methods of mud off pore-forming and dry operation pore-forming.Wherein, holing with slurry wall protection bored concrete pile is to utilize water hammer drill pore-forming, is
Not collapse hole is avoided in drilling, mud off must be carried out first, soil, which become mud, using water cycle carries out displacement pore-forming, mud
Slurry proportion is crucial, and by hole flushing after pore-forming, then descending reinforcing cage, downcomer are irrigated concrete.Although such pile work
The advantages of skill need not excessively consider the excavation situation of foundation pit and adapt to the building of various geological conditions and different scales, but
It is that holing with slurry wall protection piling quality is congenital there are problem, such as stake end easy tos produce sediment, the outside of stake forms mud layer,
The raising aspect of end bearing capacity and sidewall resistance after pile is greatly affected.Secondly, slurry drilled pile output
A large amount of mud influence site operations, need outward transport to discharge, and transport to any one place and all there is secondary pollution, and for a long time not
It is dry, it is difficult to handle.Again, slurry drilled pile needs take a substantial amount of time, for example, the mud of stake diameter 600mm, the long 25m of stake
It is 4-5 piles to starch 24 hours one day pile quantity of retaining wall cast-in-situ bored pile, and the economic cost to caused by is very high and potential
The fatigue strength for increasing worker.In comparison, widely applied " long spire in the current industry of operation pore-creating filling pile-is done
Drilled press-grouting pile（Steel reinforcement cage is inserted afterwards）" construction technology, mud off is not needed, fundamentally solves the problems, such as mud contamination,
And pile-forming speed improves 4-5 times compared to slurry drilled pile, and 24 hours pile 16-20 roots or so greatly reduce economy
Cost, this pile-forming speed also substantially reduce the duration.Secondly, such technique is not limited by level of ground water, low noise, vibration
Small advantage.However, long auger guncreting pile construction technology is very high to the excavation condition requirement of foundation pit, in general, this
If kind of a construction technology is constructed in rich groundwater buried depth than shallower region, it should first carry out excavation supporting precipitation, be excavated to and set
Count absolute altitude.If excavation of foundation pit is not excavated to designed elevation not in time or, such technique can waste a large amount of concrete, to increase
Unnecessary cost of investment；If precipitation is not in time, drilling equipment can be caused to fall into machine, increase the security risk of construction, but it is long-term
Precipitation increases the cost of construction unit again.
Driven cast-in-place pile refers to is constructed using two methods of hammering pore-forming piling method or vibration sinking tube piling method, will carry flap valve
The steel sleeve of formula pile top or precast reinforced concrete pile boots is sunk in soil, then side casting concrete（Or steel is first put into pipe
Muscle cage）, side hammer hits or vibrates stake made of the tube drawing of side.This construction method is suitable in the feelings for having silt, clay, muck soil
Condition is constructed.With general cast-in-situ bored pile ratio, driven cast-in-place pile avoid general Pile end sediment it is blocked up caused by stake
The problem of body sinks, and vertical bearing capacity cannot meet design requirement, while pile body side friction power is effectively improved by mud shadow
It rings, in addition, the technique also more saves material.But the immersed tube bored pile driving construction of tradition is influenced in many ways, geological conditions, machinery itself
Defect etc., construction quality is not easy to control, and tube drawing is too fast to be easy to cause stake shortea, and due to being Squeezing Soil Pile, pours be poured in advance
Stake be vulnerable to soil compaction effect and generate inclined fracture even misplace.Since in work progress, hammering will produce loud noise, shake
It is dynamic to influence Adjacent Buildings, therefore it is less compliant in urban district utilization, have some cities and is forbidden to use in urban district.
Manually digging hole filling pile refers to stake holes and carries out pore-forming using hand digging method, then places steel reinforcement cage, pours coagulation
Stake made of soil.Manual digging pile construction is convenient, does not need heavy mechanical equipment, and caisson is than concrete driven pile antidetonation energy
Power is strong, and cost is saved, to be used widely in highway, civil buildings.But caisson underground work condition is poor, environment is disliked
It is bad, labor intensity is big, safety and quality are particularly important.Secondly, stake holes will conscientiously study geologic information before excavating, analytically
Matter situation should formulate targetedly safety measure to the quicksand, the stream mud and situations such as pernicious gas that are likely to occur.Again, manually
Caisson is generally relatively large in diameter, most thin also in 800mm or more, so the pile foundation for general diameter in industry is not applicable.
In addition, because construction method is completely manually in underground work shoveling thus, there are collapse hole danger, construction technology safety accident frequencies
Numerous, many cities forbid constructing in plain text.
In conjunction with cast-in-place pile construction method commonly used in above-described industry, it can be seen that slurry drilled pile with
And manually digging hole filling pile takes, is effort, uneconomical, but for the of less demanding of excavation of foundation pit；In contrast, long screw auger
Hole guncreting pile and driven cast-in-place pile use mechanical equipment pore-forming, time saving, laborsaving, efficient, saving cost, but it is applicable in completely
Condition be to be excavated to designed elevation and the foundation pit of precipitation.
Invention content
Present invention aims to overcome that the deficiencies in the prior art and provide mesoporous vibration casing retaining wall long spire
The construction method of drilled press-grouting pile, quality of pile height, construction safety, of low cost, speed is fast, environmentally friendly, result with filling by the present invention
The advantages that practical.
The object of the present invention is achieved like this：A kind of construction party of mesoporous vibration casing retaining wall long auger guncreting pile
Method includes the following steps：
Step 1), surveying setting-out fixed pile, long-spiral drilling machine connect and drive auger stem and drill bit, mesoporous vibration hammer to connect
Vibration casing is connect, long-spiral drilling machine is arranged above mesoporous vibration hammer, the long-spiral drilling machine, auger stem, mesoporous vibration
Hammer and casing are axially coincident；Mobile and leveling long-spiral drilling machine, makes long-spiral drilling machine align piles position；
Step 2）, behind long-spiral drilling machine align piles position, start long-spiral drilling machine driving auger stem and drill bit vertically downward
Rotary drilling；While long-spiral drilling machine is drilled down into, starts mesoporous vibration hammer driving casing and vibrate follow-up vertically downward, it is long
Twist bit, mesoporous vibration hammer and casing are axially coincident, with proceeding to predetermined stake end depth；
Step 3）, be drilled into predetermined design hole depth, auger stem idle running discharge bottom dregs；
Step 4）, promoted drilling rod, concrete is fed into stake holes internal pressure by auger stem, filling is pressed when carrying auger stem
Concrete after carrying auger stem to predetermined altitude, stops concrete perfusion；
Step 5）, after the completion of perfusion, mesoporous vibration hammer disengages hydraulically operated fixture connection, so that casing is stayed in stake, by long spire
Drilling machine removes stake holes position, and long-spiral drilling machine is provided with cleaner, and cleaner includes cleaning rod and is arranged on cleaning rod clear
Brush head is managed, one end of cleaning rod is arranged on long-spiral drilling machine, and cleaning rod can be 0 ° -180 ° with horizontal hunting, clear using cleaner
Drill bit is managed, with dregs around excavator cleaning stake position, the joint bar device for being connected small vibration hammer with crane is together with steel reinforcement cage together side
Vibration side is inserted into the concrete being perfused；After steel reinforcement cage is inserted to predetermined depth, joint bar device is extracted completely in vibration；
Step 6）, long-spiral drilling machine moves to stake position again, start hydraulically operated fixture, clamp casing, in vibration by casing
It extracts completely, bored concrete pile coagulation forming.
In the step 4 when carrying auger stem when guncreting, the height of drill bit has consistently lower than poured into coagulation
The height of soil.
The vibration is to exempt to resonate.
The vibration frequency of the mesoporous vibration hammer is the r/min of 800r/min ~ 1200, and exciting force is 600KN ~ 800KN.
The vibration frequency of the small vibration hammer is the r/min of 700r/min ~ 1000, and exciting force is 100KN ~ 200KN.
The present invention has following good effect：
1, drilling rod is driven using long-spiral drilling machine, while using the driving casing construction of mesoporous vibration hammer, first, drilling and shield
Wall is carried out at the same time, and simplifies the construction of holing with slurry wall protection bored concrete pile, saves time, labour and transport mud cost and mud
The secondary pollution of slurry；
2, outer tube panelling construction is crept into using long screw drill rod, ensure that the construction quality of bored concrete pile, it is ensured that Bu Huikuo
Diameter, undergauge, broken pile improve rate of penetration, realize high efficiency pore-forming；
3, the threaded drillpipe of drilling machine is identical as casing longitudinal center line, and is drilled down into simultaneously, therefore borehole shape is regular, at
Hole quality can be protected；On the other hand, casing follows up with drilling rod, can play the role of retaining wall, and can ensure
Under the non-excavation condition of foundation pit, empty stake part also can carry out retaining wall using casing, so the collapse hole accident of traditional bored concrete pile is avoided,
And instead of mud, transport mud expense cost is saved, environmental pollution is avoided；
4, mesoporous vibration hammer pulls out casing in vibration, and the process of vibration increases the compactness of concrete, therefore, bored concrete pile
Pile quality it is more guaranteed, vertical bearing capacity and horizontal shear strength to stake are all strengthened raising.
Description of the drawings
Fig. 1 is the equipment connection diagram for the construction method that mesoporous vibrates casing retaining wall long auger guncreting pile.
Fig. 2 is the drilling schematic diagram for the construction method that mesoporous vibrates casing retaining wall long auger guncreting pile.
Fig. 3 is the filling mechanism schematic diagram for the construction method that mesoporous vibrates casing retaining wall long auger guncreting pile.
Fig. 4 is the slotting basket structure schematic diagram for the construction method that mesoporous vibrates casing retaining wall long auger guncreting pile.
Fig. 5 is the plug muscle device structural scheme of mechanism for the construction method that mesoporous vibrates casing retaining wall long auger guncreting pile.
Fig. 6 is that mesoporous vibrates the construction method of casing retaining wall long auger guncreting pile and pulls out casing structural scheme of mechanism.
Fig. 7 is the pile structural scheme of mechanism for the construction method that mesoporous vibrates casing retaining wall long auger guncreting pile.
Specific implementation mode
Embodiment 1, shown in as shown in Figure 1, Figure 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, mesoporous vibrates casing retaining wall long auger
Main mechanical and auxiliary needed for guncreting pile construction include：It is long-spiral drilling machine 1, mesoporous vibration hammer 2, casing 3, joint bar device 8, small
Vibration hammer 7；Accessory machinery includes：Crane 10, concrete pump 4, excavator.The installation of mechanical equipment with connect packet
Contain：Long-spiral drilling machine 1 connects and drives auger stem 5 and drill bit 6；Cleaner 12, mesoporous vibration are provided on long-spiral drilling machine
Hammer 2 clamps casing 3 with hydraulically operated fixture 13, and the auger stem 5, drill bit 6, mesoporous vibration hammer 2 and casing 3 are in axial weight
It closes；Small vibration hammer 7 connects and drives joint bar device 8；Concrete pump 4 connects long-spiral drilling machine 1, and concrete 11 is transported to spiral shell
In rotary drill bar, crane 10 hangs steel reinforcement cage 9.
Mesoporous vibrates casing retaining wall long auger guncreting pile construction technology：Surveying setting-out fixed pile-movement long spire
Drilled as holes under drilling machine align piles position, leveling-startup mesoporous vibration hammer cylinder-wall protecting-is drilled into predetermined stake bottom idle running borehole cleaning-and carries
It bores, starts concrete mixer, by long screw auger center drill rod to internal pressure concrete perfusion, press concrete to perfusion in Ti Zuan
The professional joint bar device of predetermined absolute altitude-use is inserted into steel reinforcement cage to predetermined cage top absolute altitude, extracts special joint bar device-vibration and extracts shield
Cylinder-pile.
1), surveying setting-out fixed pile, long-spiral drilling machine connect and drive auger stem and drill bit, mesoporous vibration hammer hydraulic pressure
Clamp casing, the long-spiral drilling machine, auger stem, mesoporous vibration hammer and casing are axially coincident；Mobile and leveling is long
Twist bit makes long-spiral drilling machine align piles position；
2）, behind long-spiral drilling machine align piles position, start long-spiral drilling machine driving auger stem and drill bit rotate vertically downward
Drilling；While long-spiral drilling machine is drilled down into, starts mesoporous vibration hammer driving casing and vibrate follow-up, long spire vertically downward
Drilling machine, mesoporous vibration hammer and casing are axially coincident, and with proceeding to predetermined stake end depth, the vibration frequency of mesoporous vibration hammer is 1000
R/min, exciting force 786KN；
3）, be drilled into predetermined design hole depth, auger stem idle running discharge bottom dregs；
4）, promote drilling rod, concrete is fed into stake holes internal pressure by auger stem, pressure fills while promoting auger stem
Concrete needs to ensure the height that the height of drill bit is consistently lower than penetration concrete in perfusion, carries auger stem to predetermined height
After degree, stop concrete perfusion；
5）, after the completion of perfusion, disengage hydraulically operated fixture connection, casing made to stay in stake, long-spiral drilling machine is removed into stake holes position
It sets, cleaner is provided on long-spiral drilling machine, cleaner is moved into side when auger stem works, avoids touching auger
Bar after completing work, continues to drive auger stem rotation, by cleaner horizontal hunting to the position with bit contact, pass through
The power cleaner of rotation removes the dregs on drill bit, reduces labour.Then with dregs around excavator cleaning stake position, with hanging
Vehicle slings small vibration hammer, and small vibration hammer driving joint bar device is inserted into the concrete being perfused in vibration together together with steel reinforcement cage
In；After steel reinforcement cage reaches precalculated position, joint bar device is extracted, the vibration frequency of small vibration hammer is 950r/min, and exciting force is
140KN；
6）, long-spiral drilling machine moves to stake position again, start hydraulically operated fixture, connect casing, it is in vibration that casing is complete
It extracts, bored concrete pile coagulation forming.
It is learnt in summary with practice, drilling rod is driven using long-spiral drilling machine power head, while driving using mesoporous vibration hammer
Dynamic casing construction, first, drilling and retaining wall are carried out at the same time, and simplify the construction of holing with slurry wall protection bored concrete pile, save the time,
Labour and transport mud cost；Secondly, outer tube panelling construction is crept into using long screw drill rod, ensure that the construction matter of bored concrete pile
Amount, it is ensured that will not expanding, undergauge, broken pile, improve rate of penetration, realize high efficiency pore-forming；Again, the threaded drillpipe of drilling machine with
Casing longitudinal center line is identical, and is drilled down into simultaneously, therefore borehole shape is regular, and hole quality can be protected；Another party
Face, casing follow up with drilling rod, can play the role of retaining wall, and can ensure under the non-excavation condition of foundation pit, empty stake part
Also retaining wall can be carried out using casing, so avoiding the collapse hole accident of traditional bored concrete pile, and instead of mud, saves transport mud
Expense cost is starched, environmental pollution is avoided；Finally, mesoporous vibration hammer pulls out casing in vibration, and the process of vibration increases concrete
Compactness, therefore, the pile quality of bored concrete pile is more guaranteed, and the vertical bearing capacity and horizontal shear strength to stake are all added
It is strong to improve.The quality of pile of the present invention is more guaranteed, construction is safer, cost is more economical, speed faster, more environmentally-friendly, result
Construction procedure that is more practical and simplifying traditional bored concrete pile.
Examples detailed above is only the preferred embodiment of the present invention, is not intended to limit the invention, for the technology of this field
For personnel, the invention may be variously modified and varied, all within the spirits and principles of the present invention, made by any repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of construction method of mesoporous vibration casing retaining wall long auger guncreting pile, includes the following steps：
Step 1), surveying setting-out fixed pile, long-spiral drilling machine connect and drive auger stem and drill bit, the connection of mesoporous vibration hammer to shake
Dynamic casing, long-spiral drilling machine are arranged above mesoporous vibration hammer, the long-spiral drilling machine, auger stem, mesoporous vibration hammer and
Casing is axially coincident；Mobile and leveling long-spiral drilling machine, makes long-spiral drilling machine align piles position；
Step 2）, behind long-spiral drilling machine align piles position, start long-spiral drilling machine driving auger stem and drill bit rotate vertically downward
Drilling；While long-spiral drilling machine is drilled down into, starts mesoporous vibration hammer driving casing and vibrate follow-up, long spire vertically downward
Drilling machine, mesoporous vibration hammer and casing are axially coincident, with proceeding to predetermined stake end depth；
Step 3）, be drilled into predetermined design hole depth, auger stem idle running discharge bottom dregs；
Step 4）, promoted drilling rod, concrete is fed into stake holes internal pressure by auger stem, press when carrying auger stem filling coagulation
Soil after carrying auger stem to predetermined altitude, stops concrete perfusion；
Step 5）, after the completion of perfusion, mesoporous vibration hammer disengages hydraulically operated fixture connection, so that casing is stayed in stake, by long-spiral drilling machine
Remove stake holes position, long-spiral drilling machine is provided with cleaner, and cleaner includes cleaning rod and the cleaning brush that is arranged on cleaning rod
One end of head, cleaning rod is arranged on long-spiral drilling machine, and cleaning rod can be 0 ° -180 ° with horizontal hunting, is cleared up and is bored using cleaner
Head is vibrated the joint bar device of small vibration hammer linking together with steel reinforcement cage together side with crane with dregs around excavator cleaning stake position
Side is inserted into the concrete being perfused；After steel reinforcement cage is inserted to predetermined depth, joint bar device is extracted completely in vibration；
Step 6）, long-spiral drilling machine moves to stake position again, start hydraulically operated fixture, clamp casing, it is in vibration that casing is complete
It extracts, bored concrete pile coagulation forming.
2. the construction method of mesoporous vibration casing retaining wall long auger guncreting pile according to claim 1, feature exist
In：In the step 4 when carrying auger stem when guncreting, the height of drill bit is consistently lower than the height of penetration concrete
Degree.
3. the construction method of mesoporous vibration casing retaining wall long auger guncreting pile according to claim 1, feature exist
In：The vibration is to exempt to resonate.
4. the construction method of mesoporous vibration casing retaining wall long auger guncreting pile according to claim 1, feature exist
In：The vibration frequency of the mesoporous vibration hammer is the r/min of 800r/min ~ 1200, and exciting force is 600KN ~ 800KN.
5. the construction method of mesoporous vibration casing retaining wall long auger guncreting pile according to claim 1, feature exist
In：The vibration frequency of the small vibration hammer is the r/min of 700r/min ~ 1000, and exciting force is 100KN ~ 200KN.
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| CN201510895397.XA CN105780763B (en) | 2015-12-08 | 2015-12-08 | Mesoporous vibrates the construction method of casing retaining wall long auger guncreting pile |
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|---|---|---|---|
| CN201510895397.XA CN105780763B (en) | 2015-12-08 | 2015-12-08 | Mesoporous vibrates the construction method of casing retaining wall long auger guncreting pile |
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| CN105780763B true CN105780763B (en) | 2018-08-21 |
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| CN115613564A (en) * | 2022-10-09 | 2023-01-17 | 中国水利水电第七工程局有限公司 | A kind of anti-floating anchor construction method |
| CN116770840A (en) * | 2023-05-18 | 2023-09-19 | 中国五冶集团有限公司 | A method of forming CFG piles in weak soil layers |
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| CN105780763A (en) | 2016-07-20 |
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