CN108343054A - Three axes agitating pile set beats construction reinforced concrete filling pile foundation pit enclosure construction - Google Patents
Three axes agitating pile set beats construction reinforced concrete filling pile foundation pit enclosure construction Download PDFInfo
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- CN108343054A CN108343054A CN201810165693.8A CN201810165693A CN108343054A CN 108343054 A CN108343054 A CN 108343054A CN 201810165693 A CN201810165693 A CN 201810165693A CN 108343054 A CN108343054 A CN 108343054A
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- construction
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- foundation pit
- reinforced concrete
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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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- 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
-
- 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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention belongs to building fields, construction reinforced concrete filling pile foundation pit enclosure construction is beaten more particularly to a kind of three axes agitating pile set, include the following steps, the axis stake machine of construction lofting → excavation groove → tri- debugging → mixing cement grout in place, unlatching air compressor machine send slurry to drill bit of pile machine → drill bit whitewashing, gas and cutting soil to sink to design stake bottom absolute altitude → drill bit whitewashing, gas and promotion and plays construction to design stake top absolute altitude → same method construction second row mixing pile → maintenance one week → drill-pouring pile protection.The present invention solves the problems, such as two axis stirring pile water stopping curtain maximum effective depth deficiency and building enclosure construction site critical constraints.
Description
Technical field
The invention belongs to building fields, and in particular to a kind of three axes agitating pile set beats construction reinforced concrete filling pile foundation pit enclosure and constructs
Engineering method.
Background technology
In recent years, with the extensive use of skyscraper, building enclosure Normal practice is to fill in soft layer deep basal pit
Note stake earth-retaining adds double two axis mixing pile sealing, but in narrow field, especially in City Building compact district building enclosure place
When cannot meet bored concrete pile and adding double two axis mixing pile requirement, there are two axis stirring pile water stopping curtain maximum effective depth it is insufficient and
The problem of building enclosure construction site critical constraints.And it beats construction reinforced concrete filling pile foundation pit in a kind of three axes agitating pile set of this proposition and encloses
Construction is protected, thus this case generates.
Invention content
In view of the above technical problems, the purpose of the present invention is to provide a kind of three axes agitating pile sets to beat construction reinforced concrete filling pile base
Pit enclosure construction, specific technical solution are：A kind of three axes agitating pile set beats construction reinforced concrete filling pile foundation pit enclosure construction,
Include the following steps, the axis stake machine of construction lofting → excavation groove → tri- debugging → mixing cement grout in place is opened air compressor machine, sent
Slurry to the whitewashing of drill bit of pile machine → drill bit, gas and cutting soil sinks to design stake bottom absolute altitude → drill bit whitewashing, gas and is promoted to setting
Meter stake top absolute altitude → same method construction second row mixing pile → maintenance one week → drill-pouring pile protection plays construction.
Further, the excavation groove, according to foundation pit enclosure inner edge control line, using 0.4m3Excavator excavates groove, and
Underground obstacle is removed, groove width is general single in 1.2m, and depth is 1 m.
Further, mixing speed and cement injection hydraulic control system：Three axis cement mixing piles should all in sinking and lifting process
Inject cement grout, while stringent sinking control and promotion speed；Subsidence velocity of whitewashing is not more than 1m/min, and it is little to promote speed
In 1.5 m/min；Grouting amount is generally the 70%~80% of specified slurry amount when drilling, and it is specified slurry amount to promote mixing-filling amount
20%~30%, suitably continue mixing-filling in stake bottom point.
Further, cement grout and cement grout injection are prepared：It builds at the construction field (site) and mixes slurry operation platform, near platform
Bulk cement silo is built, slurries should be carried out before booting stirs system；Using 32.5 grades of Portland cements, cement grout
Ratio of mud control mixes slurry and grouting amount for 1.5~2.0 and measures conversion with the soil mass consolidation side of every brill, and grouting pressure is 1.5~
2.5MPa is controlled with slurries conveying capacity；Mixing pile soil body 28d compression strength >=1.2Mpa.When cement-soil stirring pile construction, no
Must wash by water sinking, and adjacent two pile driving construction gap must not exceed 12h.
Further, mixing pile is installed：One row's mixing pile use strike-on, when mixing pile be two rows when outside mining strike-on, it is interior
Arrange not strike-on；Dash area is to repeat set to bore, and ensures the continuity of fender body and the construction quality of connector, three axis cement mixing piles
And the verticality of construction equipment, which is remedied, to be ensured by set brill is repeated, to have the function that curtain water stop.
The principle of the invention：In the surrounding of deep-foundation pit engineering, first according to positioning datum point, quasi- trench line is put, is opened after review
Deep-mixed pile groove is dug, after three axes agitating pile frame and stirring system are completed, carries out tri-axial deep stirring pile construction, it is deep
The number of rows of layer mixing pile construction is routinely an exclusive plus bored concrete pile, and two rows stirring pile protection can be used when narrow field and play perfusion
Stake, when every section of deep-mixed pile pile body reaches certain intensity, the general maintenance phase is 7d, should carry out drilled pile construction immediately,
Inner support beam must cut set and beat part hole inside mixing pile when constructing, be directly connected to convenient for internal support of foundation pit and bored concrete pile, it is ensured that
The safety of foundation pit.
Advantageous effect of the present invention：Water seal curtain sealing is formed using tri-axial deep stirring pile, when deep-mixed pile reaches one
After determining intensity, drilling pile protection is carried out immediately and plays construction, using bored concrete pile as foundation pit supporting pile, can be effectively protected neighbouring existing building
Object and underground utilities reach safe and reliable purpose.
Tri-axial deep stirring pile water-stop curtain effective depth is up to 30m, and two axis stirring pile water stopping curtain is maximum effectively deep
Degree is only 15m or so, when foundation pit digging depth is in 10~15m, replaces two axis mixing piles using tri-axial deep stirring pile, can have
Effect solves the problems, such as the pit curtain sealing of this digging depth.
Three axes agitating pile set, which beats construction reinforced concrete filling pile, can effectively solve building enclosure construction site critical constraints, water-stop curtain
The normal construction size of stake cannot be met the requirements and the special measure taken.
Specific implementation mode
A kind of three axes agitating pile set beats construction reinforced concrete filling pile foundation pit enclosure construction, includes the following steps, construction lofting
→ the axis stake machine of groove → tri- debugging → mixing cement grout in place is excavated, air compressor machine is opened, send slurry to drill bit of pile machine → drill bit spray
Slurry, gas and cutting soil sink to design stake bottom absolute altitude → drill bit whitewashing, gas and are promoted to design stake top absolute altitude → same method
Construction second row mixing pile → maintenance one week → drill-pouring pile protection plays construction.
Groove is excavated, according to foundation pit enclosure inner edge control line, using 0.4m3Excavator excavates groove, and lower barrier with clearing
Hinder object, groove width is general single in 1.2m, and depth is 1 m.Native timely processing more than excavation groove, to ensure deep-mixed pile just
Often construction, and reach civilized construction requirement.
Stake machine is in place：One, it is assumed unified command of by squad leader on duty, stake machine is in place, sees the feelings in terms of upper and lower, left and right before mobile clearly
Condition finds that barrier should shut down removing in time.After stake machine movement, conscientiously checks situation and correct in time.Two, stake machine should be put down
Surely, straight and even.It is used in combination theodolite to be observed correction pile frame, then loads onto sash weight control verticality.Three axis cement mixing pile positions are fixed
Behind position, then positioning review is carried out, deviation should be less than 1cm.
Mixing speed and grout injection control：Three axis cement mixing piles are sinking and should all inject cement grout in lifting process,
Stringent sinking control and promotion speed simultaneously.According to design or correlation technique data regulation, whitewashing subsidence velocity is not more than 1m/
Min promotes speed and is not more than 1.5 m/min.Grouting amount is generally the 70%~80% of specified slurry amount when drilling, promotes stirring note
Slurry amount is the 20%~30% of specified slurry amount, suitably continues mixing-filling in stake bottom point.Carry out the original record of each pile.
Prepare cement grout and slurries injection：It builds at the construction field (site) and mixes slurry operation platform, platform nearby builds bulk water
Mud silo, slurries should be carried out before booting stirs system.Using 32.5 grades of Portland cements, the ratio of mud of cement grout controls
Slurry and grouting amount being mixed for 1.5~2.0, conversion being measured with the soil mass consolidation side of every brill, grouting pressure is 1.5~2.5MPa, defeated with slurries
Send capability control.When mixing pile soil body 28d compression strength >=1.2Mpa cement-soil stirring pile constructions, must not wash by water sinking, adjacent
Two pile driving construction gaps must not exceed 12h.
Mixing pile construction：One row's mixing pile uses strike-on；Mining strike-on outside when mixing pile is two row, interior row be not multiple
It beats.Dash area is to repeat set to bore, and ensures the continuity of fender body and the construction quality of connector, three axis cement mixing piles and is applied
The verticality of construction equipment, which is remedied, to be ensured by set brill is repeated, to have the function that curtain water stop.
Hole pouring pile of drilling is added using row's three axes agitating pile under general site condition, a row is limited for site condition
When three axes agitating pile adds hole pouring pile planar dimension of drilling that cannot meet the requirements, using the set drilling perfusion of two row's three axes agitating piles
Stake can reduce the spaces 300mm, and can remove after excavation and go along with sb. to guard him mixing pile on the inside of hole, can be further added by construction operation space
275mm, total space that can save is 575mm (for three axes agitating pile diameter with D850, cast-in-situ bored pile diameter is by taking D950 as an example)；Especially
Its depth, shallow foundation hole close to and place it is narrow, because certain special requirement first construct shallow foundation hole then construction deep basal pit must go along with sb. to guard him knot
It is quite bigger than the space of conventional method saving using this engineering method in the case of the sealing problem of structure two sides, and be not required to additionally increase any
Expense.Cast-in-situ bored pile should play construction by 7d or so sets after the completion of every section of mixing pile, can not must not delay in advance, drill-pouring
Piece one jump in interval of stake is beaten, for avoid it is expanding after be difficult to be inserted into central pile, should be carried out after grout pile concrete pours for 24 hours
Intermediate pile driving construction.
Stake top effective height is enclosure ring bottom elevation, should reach when perfusion that collar tie beam top mark is high, and chisel removes laitance after-pouring
Collar tie beam, pile body main reinforcement stretches at least 500mm in collar tie beam, expanding to prevent, and should adjust mud balance, and natural mud domestic demand addition is swollen
Profit soil or chemical paste, increase mud viscosity.
Monitoring technology and analysis：In Deep foundation Pit excavation, reinforce the information-based monitoring to deep pit monitor, it can be timely
Understand the variation of construction stage foundation pit and surrounding enviroment, grasp monitoring data, is the control of working procedure, the layout of construction process
Decision-making foundation is provided.Reason should be analyzed in time when significant change occur in foundation pit or surrounding enviroment monitoring data, taken and accordingly arranged
It applies and is handled.
Claims (5)
1. a kind of three axes agitating pile set beats construction reinforced concrete filling pile foundation pit enclosure construction, it is characterised in that：Include the following steps,
The axis stake machine of construction lofting → excavation groove → tri- debugging → mixing cement grout in place, opens air compressor machine, send slurry to drill bit of pile machine
The whitewashing of → drill bit, gas and cutting soil sink to design stake bottom absolute altitude → drill bit whitewashing, gas and promoted to design stake top absolute altitude →
Same method construction second row mixing pile → maintenance one week → drill-pouring pile protection plays construction.
2. three axes agitating pile set according to claim 1 beats construction reinforced concrete filling pile foundation pit enclosure construction, feature exists
In：The excavation groove, according to foundation pit enclosure inner edge control line, using 0.4m3Excavator excavates groove, and descends obstacle with clearing
Object, groove width is general single in 1.2m, and depth is 1 m.
3. three axes agitating pile set according to claim 1 beats construction reinforced concrete filling pile foundation pit enclosure construction, feature exists
In：Mixing speed and cement injection hydraulic control system：Three axis cement mixing piles are sinking and should all inject cement grout in lifting process,
Stringent sinking control and promotion speed simultaneously；Subsidence velocity of whitewashing is not more than 1m/min, promotes speed and is not more than 1.5 m/min；
Grouting amount is generally the 70%~80% of specified slurry amount when drilling, promotes 20%~30% that mixing-filling amount is specified slurry amount,
Suitably continue mixing-filling in stake bottom point.
4. three axes agitating pile set according to claim 1 beats construction reinforced concrete filling pile foundation pit enclosure construction, feature exists
In：Prepare cement grout and cement grout injection：It builds at the construction field (site) and mixes slurry operation platform, platform nearby builds bulk cement
Silo, slurries should be carried out before booting stirs system；Using 32.5 grades of Portland cements, the ratio of mud control of cement grout is
1.5~2.0 mix slurry and grouting amount measures conversion with the soil mass consolidation side of every brill, and grouting pressure is 1.5~2.5MPa, is conveyed with slurries
Capability control；Mixing pile soil body 28d compression strength >=1.2Mpa；When cement-soil stirring pile construction, must not wash by water sinking, and adjacent two
Pile driving construction gap must not exceed 12h.
5. three axes agitating pile set according to claim 1 beats construction reinforced concrete filling pile foundation pit enclosure construction, feature exists
In：Mixing pile is installed：One row's mixing pile uses strike-on, when mixing pile is two row outside mining strike-on, interior row not strike-on；Shade
Part is bored to repeat set, ensures the continuity of fender body and the construction quality of connector, three axis cement mixing piles and construction equipment
Verticality to remedy be by repeating set and bore to ensure, to have the function that curtain water stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165693.8A CN108343054A (en) | 2018-02-28 | 2018-02-28 | Three axes agitating pile set beats construction reinforced concrete filling pile foundation pit enclosure construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165693.8A CN108343054A (en) | 2018-02-28 | 2018-02-28 | Three axes agitating pile set beats construction reinforced concrete filling pile foundation pit enclosure construction |
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| Publication Number | Publication Date |
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| CN108343054A true CN108343054A (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810165693.8A Pending CN108343054A (en) | 2018-02-28 | 2018-02-28 | Three axes agitating pile set beats construction reinforced concrete filling pile foundation pit enclosure construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155934A (en) * | 2020-01-16 | 2020-05-15 | 龙元建设集团股份有限公司 | Gravel layer three-shaft stirrer drill bit and construction method |
| CN112282767A (en) * | 2020-10-21 | 2021-01-29 | 江苏旭辰交通科技发展有限公司 | Ultra-deep reinforcement construction method for shield end soil body under water-rich silty-fine sand geology |
| CN114703881A (en) * | 2022-04-18 | 2022-07-05 | 山西建筑工程集团有限公司 | Construction method of waterproof curtain containing confined water hard stratum and triaxial mixing pile device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592605A (en) * | 2017-01-17 | 2017-04-26 | 浙江勤业建工集团有限公司 | Construction method of foundation pit bracing with tri-axial stirring piles overlapped with reinforced concrete cast-in-place piles to be driven |
| CN106759379A (en) * | 2017-01-25 | 2017-05-31 | 北京市政建设集团有限责任公司 | A kind of construction method of the asymmetric water-stop curtain of foundation ditch |
| CN106894430A (en) * | 2017-01-25 | 2017-06-27 | 北京市政建设集团有限责任公司 | A kind of three axes agitating pile waterproof curtain construction method |
-
2018
- 2018-02-28 CN CN201810165693.8A patent/CN108343054A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592605A (en) * | 2017-01-17 | 2017-04-26 | 浙江勤业建工集团有限公司 | Construction method of foundation pit bracing with tri-axial stirring piles overlapped with reinforced concrete cast-in-place piles to be driven |
| CN106759379A (en) * | 2017-01-25 | 2017-05-31 | 北京市政建设集团有限责任公司 | A kind of construction method of the asymmetric water-stop curtain of foundation ditch |
| CN106894430A (en) * | 2017-01-25 | 2017-06-27 | 北京市政建设集团有限责任公司 | A kind of three axes agitating pile waterproof curtain construction method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155934A (en) * | 2020-01-16 | 2020-05-15 | 龙元建设集团股份有限公司 | Gravel layer three-shaft stirrer drill bit and construction method |
| CN112282767A (en) * | 2020-10-21 | 2021-01-29 | 江苏旭辰交通科技发展有限公司 | Ultra-deep reinforcement construction method for shield end soil body under water-rich silty-fine sand geology |
| CN114703881A (en) * | 2022-04-18 | 2022-07-05 | 山西建筑工程集团有限公司 | Construction method of waterproof curtain containing confined water hard stratum and triaxial mixing pile device |
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Application publication date: 20180731 |
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| RJ01 | Rejection of invention patent application after publication |