CN107524142A - A kind of holing with slurry wall protection cast-in-place pile construction method - Google Patents
A kind of holing with slurry wall protection cast-in-place pile construction method Download PDFInfo
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- CN107524142A CN107524142A CN201710849376.3A CN201710849376A CN107524142A CN 107524142 A CN107524142 A CN 107524142A CN 201710849376 A CN201710849376 A CN 201710849376A CN 107524142 A CN107524142 A CN 107524142A
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- conduit
- holing
- construction method
- stake
- wall protection
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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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
-
- 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
Abstract
The invention provides a kind of holing with slurry wall protection cast-in-place pile construction method, this method includes：Site localization step；Shield-tube embedment step；Pore formation step is layered, the sandy soils of one of stake position are drilled to rock aspect by the way of rotary digging drilling hole, at the design bottom absolute altitude using punching rig punching to this position lithosphere；First time borehole cleaning step；Steel reinforcement cage and conduit place step；Second of borehole cleaning step；Concreting and conduit demounting procedure.In the present invention, the sandy soils of stake holes are drilled to rock bed boundary by Spiral digging machine, bearing course at pile end is drilled using punching piling machine to the design bottom absolute altitude of this position lithosphere, Spiral digging machine be make use of in the high advantage of the efficiency of construction of sandy soils, and punching piling machine is it is possible to prevente effectively from Spiral digging machine easily falls drill bit or the advantage hard rock can not be crept into the drawbacks of in highdensity clay, speed of application is greatly accelerated, the duration is shortened and improves hole quality.
Description
Technical field
The present invention relates to construction engineering technical field, in particular to a kind of holing with slurry wall protection filling pile construction side
Method.
Background technology
At present, the building in city is more and more intensive, height more and more higher, and just the ground to building trade, basis have for this
Higher requirement.And construction style is progressively changed into super high rise structure, deep basal pit, deep foundation from traditional multilayer, high-level structure
Also more and more, particularly pile foundation can reach tens of rice even rice up to a hundred.
With the development of technology, pile foundation is progressively prefabricated pile tube, churning driven, reverse circulation by original artificial digging pile
The heavy mechanical equipments such as brill, perforating press are substituted.Plant equipment solves artificial digging pile problem for security while also improved
The efficiency of construction.For each stake machine, though churning driven improves efficiency, exist and easily fall when meeting highdensity clay construction
If drill bit or the drawbacks of can not creep into when running into hard rock.And can effectively to solve highdensity clay easy for punching pile machine
Fall drill mouth or the drawbacks of hard rock can not be crept into, but it is relatively low in the efficiency of construction of the common soil body and layer of sand.
China Patent Publication No. is CN104120716A application for a patent for invention, discloses a kind of bored pile construction side
Method, specifically disclose this method and comprise the following steps：Site localization step；Shield-tube embedment step, the position of casing are embedded accurate
Stably, tamped between casing and crater wall with clay, casing thick liquid discharge mouth communicates with mud ditch, casing center line and stake bit line deviation
No more than 50mm, casing 1.0 meters of buried depth in cohesive soil, casing 100-200mm above ground level suitable for reading, exempt from for wall on mud face
Lower floating, wash away hole wall and cause the hole that collapses, retaining hole entoplasm face is higher by more than level of ground water 1.0m；Rig step in place, bore
Machine keeps balancing in place, and in drilling operation, not run-off the straight displacement is vertical with theodolite measure drilling rod in both direction in advance
Degree, making the control of drilling rod perpendicularity deviation, drill bit device to hole is accurate, and bit central and casing deviation are less than 15mm within 0.2%；System
Standby qualified mud step；Pore-forming and borehole cleaning step；Steel reinforcement cage hangs step；Pour underwater concrete step.
In above-mentioned technical proposal, by determining drilling rod perpendicularity with theodolite in the two directions, make drilling rod perpendicularity inclined
Difference control controls bit central and the deviation of casing to solve the problems, such as stake holes deflection within 0.2%, and construction quality is difficult to
Ensure.
The content of the invention
In consideration of it, the present invention proposes a kind of holing with slurry wall protection cast-in-place pile construction method, it is intended to solve existing rock stake into
The problem of hole is less efficient and second-rate.
On one side, the present invention proposes a kind of holing with slurry wall protection cast-in-place pile construction method, and this method includes following step
Suddenly：Site localization step, the cross centre line of each position is fixed on the timber near stake holes and marked；Shield-tube embedment
Step, the predetermined position in above-mentioned each stake holes bury casing respectively；
Pore formation step is layered, the sandy soils of stake position one of them described are drilled by the way of rotary digging drilling hole to rock aspect
Afterwards, at the design bottom absolute altitude using punching rig punching to this position lithosphere；First time borehole cleaning step, mud is injected described in
The stake holes bottom hole being layered in pore formation step is cleared up sediment；Steel reinforcement cage and conduit place step, first by steel reinforcement cage
Transfer to the bottom hole of the stake holes in the layering pore formation step, then conduit is transferred into the layering pore formation step
The bottom hole of the stake holes；Second of borehole cleaning step, after the steel reinforcement cage and conduit decentralization, second of borehole cleaning is carried out, directly
Reach design requirement to mud balance and sand factor；Concreting step, the concrete is inserted into the stake holes bottom hole, treated
The concrete reaches the stake top absolute altitude of the stake holes, stops concreting after meeting superfilled amount；Conduit demounting procedure, coagulation
Conduit described in native filling process is all the time in Transducers Embedded in Concrete, and dismounting is progressively segmented with concreting.
Further, in above-mentioned holing with slurry wall protection cast-in-place pile construction method, in the shield-tube embedment step, the casing
For tool-type steel pile casting.
Further, in above-mentioned holing with slurry wall protection cast-in-place pile construction method, in the layering pore formation step, rotary digging is utilized
Machine is drilled to rock aspect to the sandy soils of stake position one of them described by the way of rotary digging drilling hole, using punching piling machine
At drilling to the design bottom absolute altitude of this position lithosphere；Meanwhile the Spiral digging machine is displaced to another position and carries out rotary digging drilling hole；
The Spiral digging machine and the punching piling machine are used alternatingly to be crept into each stake position.
Further, in above-mentioned holing with slurry wall protection cast-in-place pile construction method, in the layering pore formation step, in the sand
When soil layer is drilled, fishtail bit or cage type bit are chosen.
Further, in above-mentioned holing with slurry wall protection cast-in-place pile construction method, the steel reinforcement cage and conduit are placed in step,
The conduit is transferred using the suspension hook of the punching piling machine.
Further, in above-mentioned holing with slurry wall protection cast-in-place pile construction method, in the concreting step, using institute
State punching piling machine and hang pouring funnel.
Further, in above-mentioned holing with slurry wall protection cast-in-place pile construction method, in the concreting step, during perfusion
Between control in the concrete in inserting the conduit not time of lost flowability, while add slow setting into the concrete
Agent.
Further, in above-mentioned holing with slurry wall protection cast-in-place pile construction method, in the conduit demounting procedure, the coagulation
Soil perfusion should control last time groundwater increment, and the first bucket concreting meets first filling amount requirement.
Further, in above-mentioned holing with slurry wall protection cast-in-place pile construction method, in the conduit demounting procedure, using described
Punching piling machine above carries the conduit to ground.
Compared with prior art, the beneficial effects of the present invention are holing with slurry wall protection bored concrete pile provided by the invention is applied
Work method, the sandy soils of stake holes are drilled to rock bed boundary by Spiral digging machine, power is supported to stake using punching piling machine
Layer is drilled to the design bottom absolute altitude of this position lithosphere, make use of Spiral digging machine in high excellent of efficiency of construction of sandy soils
Gesture, and punching piling machine is it is possible to prevente effectively from Spiral digging machine easily falls drill bit in highdensity clay or can not in hard rock
The advantage of the drawbacks of drilling, the two is effectively coordinated according to specific pore-forming environment, greatly accelerates speed of application, shortened
Duration and improve hole quality.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the flow chart of holing with slurry wall protection cast-in-place pile construction method provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram that holing with slurry wall protection bored concrete pile provided in an embodiment of the present invention uses Spiral digging machine drilling；
Fig. 3 is the schematic diagram that holing with slurry wall protection bored concrete pile provided in an embodiment of the present invention uses the drilling of punching piling machine；
Fig. 4 is the another schematic diagram that holing with slurry wall protection bored concrete pile provided in an embodiment of the present invention uses the drilling of punching piling machine.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and
Feature in embodiment can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Refering to Fig. 1, the holing with slurry wall protection cast-in-place pile construction method of the embodiment of the present invention includes：
Site localization step S1, the cross centre line of each position is fixed on the timber near stake holes and marked.
Specifically, before construction, the cross centre line of each stake position according to the axis of stake, can be drawn, center line is used
On the timber near stake holes 1, pile position deviation controls within 10mm nails driven, and stake is embedded firmly eye-catching mark.
Shield-tube embedment step S2, the predetermined position in above-mentioned each stake holes bury casing respectively；
With reference to Fig. 2, casing can select tool-type steel pile casting, when it is implemented, being tamped between casing 2 and hole wall with clay, protect
2 thick liquid discharge mouths of cylinder communicate with mud pit, and casing center line and stake bit line deviation are not more than 50mm, buried depth 1.0 in cohesive soil of casing 2
Rice, the 100-200mm above ground level suitable for reading of casing 2, exempt from mud face for wall and fluctuate, wash away hole wall and cause the hole that collapses, keep stake holes 1
Entoplasm face is higher by more than level of ground water 1.0m.
Pore formation step S3 is layered, the sandy soils H1 of one of stake position is drilled by the way of rotary digging drilling hole to lithosphere
Behind face, at the design bottom absolute altitude using punching rig punching to this position lithosphere H2.
With reference to Fig. 2 and Fig. 3, combined because churning driven is stretched by more piece drilling rod, the perpendicularity that pore-forming gets over deep hole is more difficult to
To ensure, and the disadvantage of rotary digging drilled as holes out of plumb can be made up during the freely falling body pore-forming of block stamp 41 of punching piling machine 4
End.Therefore, the present embodiment is drilled to rock using Spiral digging machine 3 to the sandy soils H1 of one of stake position by the way of rotary digging drilling hole
Behind rock layers H2 faces, then drilled to this position lithosphere H2 design bottom absolute altitude using punching piling machine 4；Meanwhile by Spiral digging machine 3
It is displaced to another position and carries out rotary digging drilling hole；The boring procedure of other positions is circulated with this.For example, 1. Spiral digging machine is first used in a number stake position
3 drillings are moved to 2. number stake position drilling to scar and then by Spiral digging machine 3, and at the same time 1. number stake position utilizes punching piling machine 4
Block stamp is impacted, and completes the drilling construction at scar to the low absolute altitude of rock section design, other stake positions are circulated with this.It is specific real
Shi Shi, the model and drill bit size of Spiral digging machine 3, the model of punching piling machine 4 and block stamp size can be carried out according to actual conditions
Selection, the present embodiment do not do any restriction to it.For example, when sandy soils H1 is drilled, fishtail bit or cage can be chosen
Drill bit；When lithosphere H2 drills, CK series punching pile machines can be selected.Furthermore, it is possible to the quantity according to job site stake position
And the quantity of the different efficiencies of construction selection Spiral digging machine 3 and punching piling machine 4 of distinct device so that Spiral digging machine 3 and punching are beaten
Stake machine 4 preferably coordinates, to improve hole quality and efficiency.
First time borehole cleaning step S4, the stake holes bottom hole that mud is injected in layering pore formation step is cleared up sediment.
Specifically, after projected depth is bored into, hole depth, hole position, hole shape, aperture etc. should be checked, utilizes mud
Stock pump is intraoral natural mud hand-hole, rinses repeatedly, finally clears up bottom hole sediment, and inject sky toward bottom hole using air compressor machine
Gas, caused hydraulic pressure is mixed with mud 5 in hole using it, sand setting and sediment are developed simultaneously, whole hole bottom hole sediment is thick
Degree must not exceed 50mm.
Steel reinforcement cage and conduit place step S5, first transfer steel reinforcement cage to the bottom hole of the stake holes in layering pore formation step,
Conduit is transferred to the bottom hole of the stake holes in layering pore formation step again.
Specifically, steel reinforcement cage pre-selection makes shaping by design drawing, to ensure steel reinforcement cage in transport, hoisting process not
Deform, with spiral or welding ring-shaped stirrup, add one of reinforcement stirrup every a segment length rice, and welded point by point with cage bar
Jail, the protective layer used precast concrete roundel of reinforcing bar are enclosed on Reinforced Hoop disk, can both have been prevented from transferring reinforcing bar collision hole wall, risen again
Steel bar cage protecting layer effect is controlled, steel reinforcement cage is sling and after vertical righting, slowly transferred, and must not collide hole wall, after pore-forming as early as possible
Steel reinforcement cage is laid, is back-silted with reducing stake holes bottom, top surface and bottom surface absolute altitude meet design requirement, and error should be less than ± 50mm；Treat steel
To after bottom hole under muscle cage whole, then downcomer, in order to ensure that conduit can carry pipe after the completion of casting and compacting of concrete, led in final section
Pipe afterbody one U type suspension ring of reinforcement welding, make the steel wire rope in tripping in stake holes be connected on suspension ring.When it is implemented, can be with
Conduit is transferred using the suspension hook of punching piling machine 4.
Second of borehole cleaning step S6, after steel reinforcement cage and conduit decentralization, second of borehole cleaning is carried out, until mud balance reaches
Design requirement.
Specifically, after steel reinforcement cage and conduit tripping in, you can carry out second of borehole cleaning, sediment is drifted about and overflow, mixed
Stake holes bottom sediment thickness is less than 100mm before solidifying soil perfusion.
Concreting step S7, the concrete is inserted into the stake holes bottom hole, treats that the concrete reaches the stake
The stake top absolute altitude in hole, stops concreting after meeting superfilled amount, is embedded to the conduit all the time during filling concrete
In concrete, and as the conduit sections are removed in pouring for concrete.
Specifically, before concrete cast, repetition measurement stake holes bottom sediment thickness, conduit collocation and assembling need to be prior according to hole depth
Calculated, it is determined that rational collocation is beneficial to mixed pouring and the dismounting of conduit, conduit are suitable for reading straight with 6 times mouths of concrete casting funnel
Connect connected, and be higher than mud face, pour the inner concrete storage capacity of funnel 6 and must be fulfilled for cutting plug and require.Filling concrete should control
Last time groundwater increment, the first bucket concreting meet first filling amount requirement, and conduit bottom is mixed to be once embedded to when irrigating first
Solidifying 0.8-1.2 meter of soil is defined, and concrete should be poured into a mould continuously, through that can detect the upper of concrete surface with plummet in filling process
Rise, and lift conduit in good time and remove conduit sections, the minimum depth of conduit is strictly controlled according to actual conditions, to protect
The continuous uniform of pile concrete is demonstrate,proved, the rate of climb of filling concrete is more than or equal to 2m/h.When it is implemented, it can use
Punching piling machine 4, which is hung, pours funnel 6, and infusion time should be controlled in the concrete in inserting conduit not lost flowability
In, while retarder is added into concrete；Conduit can be above carried to ground using punching piling machine 4.
Holing with slurry wall protection cast-in-place pile construction method that is above-mentioned obviously to draw, being provided in the present embodiment, passes through rotary digging
Machine 3 is drilled to lithosphere H2 interfaces to the sandy soils H1 of stake holes, and bearing course at pile end is drilled using punching piling machine 4
To this position lithosphere H2 design bottom absolute altitude, Spiral digging machine 3 is make use of in the high advantage of sandy soils H1 efficiency of construction, and
Punching piling machine 4 is it is possible to prevente effectively from Spiral digging machine 3 easily falls drill bit in highdensity clay or can not crept into hard rock
The drawbacks of advantage, the two is effectively coordinated according to specific pore-forming environment, speed of application is greatly accelerated, shortens work
Phase and improve hole quality.In addition, decentralization conduit is carried out using punching piling machine 4, hangs and pours funnel 6, dismounting conduit
Deng operation, the service efficiency of crawler crane or truck crane is improved.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (9)
1. a kind of holing with slurry wall protection cast-in-place pile construction method, it is characterised in that comprise the following steps：
Site localization step, the cross centre line of each position is fixed on the timber near stake holes and marked；
Shield-tube embedment step, the predetermined position in each stake holes bury casing respectively；
Pore formation step is layered, the sandy soils of stake position one of them described are drilled by the way of rotary digging drilling hole to rock aspect
Afterwards, at the design bottom absolute altitude using punching rig punching to this position lithosphere；
First time borehole cleaning step, the stake holes bottom hole that mud is injected in the layering pore formation step is cleared up sediment；
Steel reinforcement cage and conduit place step, first transfer steel reinforcement cage to the bottom hole of the stake holes in the layering pore formation step
Afterwards, then by conduit transfer to the bottom hole of the stake holes in the layering pore formation step；
Second of borehole cleaning step, after the steel reinforcement cage and conduit decentralization, second of borehole cleaning is carried out, until the mud ratio
Weight and sand factor reach design requirement；
Concreting and conduit demounting procedure, the concrete is inserted into the stake holes bottom hole, treats that the concrete reaches institute
The stake top absolute altitude of stake holes is stated, stops concreting after meeting superfilled amount, during filling concrete by the conduit all the time
In Transducers Embedded in Concrete, and with coagulation
The conduit sections are removed in pouring for soil.
2. holing with slurry wall protection cast-in-place pile construction method according to claim 1, it is characterised in that the shield-tube embedment step
In rapid, the casing is tool-type steel pile casting.
3. holing with slurry wall protection cast-in-place pile construction method according to claim 1, it is characterised in that the layering pore-forming step
In rapid, the sandy soils of stake position one of them described are drilled to rock aspect by the way of rotary digging drilling hole using Spiral digging machine,
Drilled using punching piling machine to the design bottom absolute altitude of this position lithosphere, meanwhile, the Spiral digging machine is displaced to another stake
Position carries out rotary digging drilling hole；The Spiral digging machine and the punching piling machine are used alternatingly to be crept into each stake position.
4. the holing with slurry wall protection cast-in-place pile construction method according to claim 1 or 3, it is characterised in that described to separate into
In the step of hole, when the sandy soils are drilled, fishtail bit or cage type bit are chosen.
5. electric holing with slurry wall protection cast-in-place pile construction method according to claim 1, it is characterised in that the steel reinforcement cage and
Conduit is placed in step, and the conduit is transferred using the suspension hook of the punching piling machine.
6. holing with slurry wall protection cast-in-place pile construction method according to claim 1, it is characterised in that the concreting
In step, pouring funnel is hung using the punching piling machine.
7. the holing with slurry wall protection cast-in-place pile construction method according to claim 1 or 6, it is characterised in that the concrete
Pouring in step, infusion time is controlled in the concrete in inserting the conduit not time of lost flowability, while to institute
State and retarder is added in concrete.
8. the holing with slurry wall protection cast-in-place pile construction method according to claim 1 or 6, it is characterised in that the concrete
Pour in step, the filling concrete should control last time groundwater increment, and the first bucket concreting meets first filling amount requirement.
9. holing with slurry wall protection cast-in-place pile construction method according to claim 1, it is characterised in that the conduit dismounting step
In rapid, the conduit is above carried to ground using the punching piling machine.
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| CN201710849376.3A CN107524142A (en) | 2017-09-20 | 2017-09-20 | A kind of holing with slurry wall protection cast-in-place pile construction method |
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Cited By (15)
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|---|---|---|---|---|
| CN108149678A (en) * | 2018-01-12 | 2018-06-12 | 中铁三局集团有限公司 | A kind of loess retaining wall does the construction method of operation pore-creating filling pile |
| CN108411919A (en) * | 2018-03-28 | 2018-08-17 | 贵州省地质矿产勘查开发局111地质大队 | Pile bottom sediment cleaning method for rotary drilling mechanical hole-forming pile |
| CN108505935A (en) * | 2018-04-17 | 2018-09-07 | 上海建工集团股份有限公司 | Rectangle pile foundation drilling construction equipment and construction method |
| CN109113055A (en) * | 2018-08-30 | 2019-01-01 | 福建群达工程建设有限公司 | The construction method of composite pile |
| CN109113050A (en) * | 2018-09-19 | 2019-01-01 | 邹延辉 | A kind of construction method of concrete vibroflotation composite pile |
| CN109137957A (en) * | 2018-09-19 | 2019-01-04 | 上海市机械施工集团有限公司 | A kind of pile base construction method |
| CN110159186A (en) * | 2019-05-24 | 2019-08-23 | 中国建筑第五工程局有限公司 | Slurry drilled pile drilling construction method |
| CN110700241A (en) * | 2019-10-08 | 2020-01-17 | 上海建工一建集团有限公司 | Cast-in-situ bored pile and construction method thereof |
| CN111021948A (en) * | 2019-12-30 | 2020-04-17 | 深圳市盛业地下工程有限公司 | Pile foundation combination equipment for rapid pore-forming of complex geology |
| CN111236220A (en) * | 2020-01-19 | 2020-06-05 | 中交第三航务工程局有限公司江苏分公司 | Construction process of punching cast-in-place pile of mixed foundation in sea-filling area |
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| CN114703831A (en) * | 2022-04-20 | 2022-07-05 | 山西四建集团有限公司 | Construction method of reinforced concrete cast-in-place pile under complex geological condition |
| CN115059060A (en) * | 2022-06-23 | 2022-09-16 | 东莞市恒昌建筑工程有限公司 | Rotary excavating grouting wall protection construction method for complex terrain |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149678A (en) * | 2018-01-12 | 2018-06-12 | 中铁三局集团有限公司 | A kind of loess retaining wall does the construction method of operation pore-creating filling pile |
| CN108411919A (en) * | 2018-03-28 | 2018-08-17 | 贵州省地质矿产勘查开发局111地质大队 | Pile bottom sediment cleaning method for rotary drilling mechanical hole-forming pile |
| CN108505935A (en) * | 2018-04-17 | 2018-09-07 | 上海建工集团股份有限公司 | Rectangle pile foundation drilling construction equipment and construction method |
| CN109113055A (en) * | 2018-08-30 | 2019-01-01 | 福建群达工程建设有限公司 | The construction method of composite pile |
| CN109113050A (en) * | 2018-09-19 | 2019-01-01 | 邹延辉 | A kind of construction method of concrete vibroflotation composite pile |
| CN109137957A (en) * | 2018-09-19 | 2019-01-04 | 上海市机械施工集团有限公司 | A kind of pile base construction method |
| CN110159186A (en) * | 2019-05-24 | 2019-08-23 | 中国建筑第五工程局有限公司 | Slurry drilled pile drilling construction method |
| CN110700241A (en) * | 2019-10-08 | 2020-01-17 | 上海建工一建集团有限公司 | Cast-in-situ bored pile and construction method thereof |
| CN111021948A (en) * | 2019-12-30 | 2020-04-17 | 深圳市盛业地下工程有限公司 | Pile foundation combination equipment for rapid pore-forming of complex geology |
| CN111236220A (en) * | 2020-01-19 | 2020-06-05 | 中交第三航务工程局有限公司江苏分公司 | Construction process of punching cast-in-place pile of mixed foundation in sea-filling area |
| CN111519614A (en) * | 2020-05-19 | 2020-08-11 | 潍坊宏图环保设备有限公司 | Different geological layer pile body construction method |
| CN111519614B (en) * | 2020-05-19 | 2021-10-01 | 潍坊宏图环保设备有限公司 | Different geological layer pile body construction method |
| CN111851479A (en) * | 2020-07-30 | 2020-10-30 | 陕西龙海新创基础工程有限公司 | Method for constructing immersed tube rammed cast-in-place pile in sand layer or gravel layer |
| CN112144516A (en) * | 2020-10-16 | 2020-12-29 | 王继忠 | Construction method of concrete pile |
| CN114703831A (en) * | 2022-04-20 | 2022-07-05 | 山西四建集团有限公司 | Construction method of reinforced concrete cast-in-place pile under complex geological condition |
| CN115059060A (en) * | 2022-06-23 | 2022-09-16 | 东莞市恒昌建筑工程有限公司 | Rotary excavating grouting wall protection construction method for complex terrain |
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Application publication date: 20171229 |