CN106049463A - Soil-squeezing hole expanding pile and construction method and drilling tool thereof - Google Patents
Soil-squeezing hole expanding pile and construction method and drilling tool thereof Download PDFInfo
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- CN106049463A CN106049463A CN201610362530.XA CN201610362530A CN106049463A CN 106049463 A CN106049463 A CN 106049463A CN 201610362530 A CN201610362530 A CN 201610362530A CN 106049463 A CN106049463 A CN 106049463A
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- soil
- squeezing
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- 238000005553 drilling Methods 0.000 title claims abstract description 61
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 40
- 238000005056 compaction Methods 0.000 claims description 24
- 230000010412 perfusion Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 235000009508 confectionery Nutrition 0.000 abstract 1
- 238000010923 batch production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Classifications
-
- 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
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/327—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being pivoted about a longitudinal axis
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention provides a soil-squeezing hole expanding pile and a construction method and drilling tool thereof. The soil-squeezing hole expanding pile comprises a soil-squeezing part and a hole expanding part located at the bottom of the soil-squeezing part. The soil-squeezing part comprises a pile foundation and a concrete pile body arranged in the pile foundation in a filled mode. The pile foundation comprises a soil-squeezing layer located at the inner periphery of the pile foundation, and an inner thread formed in the inner wall of the soil-squeezing layer. The concrete pile body comprises an outer thread formed in the outer wall of the concrete pile body. The inner thread is in screw confection with the outer thread. A blocking ring structure of the soil-squeezing hole expanding pile conducts secondary squeezing on the hole wall of the squeezing-expanding-formed pile, soil is prevented from being screwed out in the pile forming process, and thus the pile is formed directly through squeezing and expanding. In addition, an expanding head is of a double-layer structure with an inner barrel and an outer barrel, and an expanding tooth is arranged on the inner barrel. Besides, through rotation of the expanding head, out stretching and retracting of the expanding tooth are controlled, and expanding of different soil textures is completed.
Description
[technical field]
The present invention relates to build engineering field, be specifically related to a kind of earth-squeezing hole-enlarging stake and this earth-squeezing hole-enlarging stake construction method and
Its drilling tool.
[background technology]
At present in the foundation engineerings such as building, water conservancy, highway, Double helix extruded and extended pile is the most conventional pile foundation form, this
Construction method includes utilizing bidirectional helix closed extruding-enlarging aiguille to creep into squeezed hole, in downward rotary drill squeezed hole by rotary drill out
The soil body can be squeezed in stake holes sidewall, then makes bidirectional helix closed extruding-enlarging aiguille move upward and again rotates squeezed stake holes,
During the slump soil body can be squeezed into stake holes sidewall in stake holes in rotating up squeezed lifting, promote simultaneously in upper rotation, start coagulation
Soil pump is to stake holes intrinsic pressure filling piling.The subject matter existed is first to dig out soil rotation to be transported up squeezing to the pile lining of both sides more again
Pressure, the soil therefore spun out can block the conveying channel that rotating vane is formed, and easily produces bit bouncing phenomenon.And discharge
Earth or mud, add bore forming difficulty and progress.
Along with the increase of building height, foundation pile length is stepped up, and the difficulty of pile foundation construction is the most increasing.Existing stake
The bearing capacity of the bored concrete pile of foundation construction is mainly made up of stake end soil resistance and Pile side soil frictional force；The enlarged footing of pile foundation makes
Formed with cement high-pressure mortar spraying, but use above-mentioned bored concrete pile to meet under current complex geological condition and want
Ask.
Therefore, it is necessary to provide the construction of earth-squeezing hole-enlarging stake and this earth-squeezing hole-enlarging stake used under a kind of complex geological condition
Method and drilling tool thereof.
[summary of the invention]
It is an object of the invention to provide a kind of earth-squeezing hole-enlarging stake and the construction method of this earth-squeezing hole-enlarging stake and drilling tool thereof.
Technical scheme is as follows:
A kind of earth-squeezing hole-enlarging stake, including soil compaction portion be positioned at the reamer bottom soil compaction portion, described soil compaction portion includes pile foundation
And it being filled in the concrete-pile body of pile foundation, described pile foundation includes being positioned at the soil compaction layer of its inner peripheral, being formed at described soil compaction layer
The female thread of inwall, described concrete-pile body includes the external screw thread being formed at its outer wall, described female thread and described external screw thread
It is spirally connected；Described reamer includes extending the pile foundation head of formation bottom described pile foundation, being covered in the cement of described pile foundation head inwall
Pulp layer, the concrete pile head being filled in described grout layer.
Preferably, described concrete-pile body and described concrete pile head one form.
The construction method of a kind of earth-squeezing hole-enlarging stake, comprises the steps:
(1), providing tool to stop the drilling tool of circle, apply described drilling tool to rotate forward and hole earth, described drilling tool exists
The inwall forming pile foundation forms soil compaction layer；
(2), when the drilling depth of described drilling tool reaches the predetermined depth of pile foundation, described drilling tool is stopped；
(3), described drilling tool also include the enlarged footing that is positioned at bottom it, described enlarged footing tool enlarging tooth and extending port, pass through
Described drilling rod drives described enlarged footing to reversely rotate, and described enlarging tooth stretches out, by described expansion laterally through described extending port
Ability to speak is enlarged bottom pile foundation, after forming pile foundation head, stops described drilling tool；
(4), again drive described enlarged footing to rotate forward, make described enlarging tooth stretch into also to inner side through described extending port
After being contained in described extending port, stop described drilling tool；
(5), the inwall to pile foundation head carries out whitewashing and forms grout layer；
(6), whitewashed after, drilling tool spiral shell in pile foundation is gone out, simultaneously successively to concrete perfusion in pile foundation head and pile foundation；
(7), described stop circle outer wall include external screw thread, described external screw thread described soil compaction layer inwall formed with described outside
The female thread of screw-threaded engagement；
(8), in described pile foundation while concrete perfusion to concrete perfusion in described female thread, complete described soil compaction and expand
Hole stake.
A kind of drilling tool, including having the drilling rod of drill bit and being sheathed on the enlarged footing of described drill bit, described enlarged footing includes enlarging
Tooth, inner core and be sheathed on the urceolus of inner core, and described inner core and described urceolus interval are arranged, described inner core includes clamping part, institute
State urceolus include limiting section and extending port, described limiting section quantity be two and interval be formed on the inner peripheral of described urceolus,
Described clamping part is formed on the outer peripheral edge of described inner core and is arranged between two described limiting sections, and described extending port is for running through
The through hole of described urceolus, described enlarging tooth includes the connecting portion movable with described inner core and extends from described connecting portion and insert institute
State the expansion mouth of extending port；Described drilling rod also includes the body being sequentially connected with, stops circle and borded pile, and described borded pile is from described
Drill bit extends and is formed, and described body, stop circle, borded pile and the concentricity axle of drill bit are arranged, and the described internal diameter stopping circle is more than institute
State borded pile and described body, and be surrounded on the depth of thread screw thread more than described stop ring outer wall of described borded pile outer wall.
Preferably, the screw thread Zhou Jing of described stop ring outer wall is identical with the screw thread week footpath of described borded pile outer wall.
Preferably, described inner core and hollow cylinder that described urceolus is concentricity axle.
Preferably, described inner core and described urceolus are by described limiting section and described clamping part and at two described limiting sections
Between circular arc length in the range of reverse coaxial rotating.
Preferably, between two described limiting sections, the length of circular arc string is less than the length of described expansion mouth.
Preferably, by rotating against of described inner core and described urceolus, described expansion mouth is stretched along described extending port direction
Go out and shrink.
Preferably, described limiting section and described clamping part are formed at same level.
The beneficial effects of the present invention is:
1, stop that coil structures carries out second time and extrudes the hole wall of the stake of the most squeezed one-tenth, stop that formation of pile soil is not screwed out
Direct squeezed pile, its novel structure, pile quality are good, be difficult to bit bouncing.
2, environmental protection, discharges without mud, transports outward without dregs, without construction fugitive dust, it is not necessary to deposit soil site, and environment around will not
It is contaminated.
3, will be enlarged by head and be set to the double-decker of inner core and urceolus, enlarging tooth is located at inner core, and utilizes described expansion
The rotation of major part, controls stretching out and shrinking of enlarging tooth, completes the enlarging to different soil properties, the design of this structure is simple, low cost,
Effective, be suitable to batch production and promote the use of.
[accompanying drawing explanation]
Fig. 1 is the sectional view of earth-squeezing hole-enlarging stake of the present invention；
Fig. 2 is the structure chart of drilling tool of the present invention；
Fig. 3 is the profile of the enlarged footing use state one of drilling tool shown in Fig. 2；
Fig. 4 is the profile of the enlarged footing use state two of drilling tool shown in Fig. 2.
[detailed description of the invention]
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Please refer to Fig. 2 to Fig. 4, the invention provides a kind of drilling tool 100, including the drilling rod 2 of tool drill bit 21 and sheathed
Enlarged footing 1 in described drill bit 21.
Described enlarged footing 1 includes enlarging tooth 11, inner core 12 and is sheathed on the urceolus 13 of inner core 12, and described inner core 12 and institute
State urceolus 13 interval to arrange.
Described inner core 12 includes clamping part 121.
Described urceolus 13 includes that limiting section 131 and extending port 133, described limiting section 131 quantity are two and interval formation
On the inner peripheral of described urceolus 13, described clamping part 121 is formed on the outer peripheral edge of described inner core and is arranged in described in two
Between limiting section 131, described extending port 133 is the through hole running through described urceolus 13.
Described enlarging tooth 11 include with the connecting portion 111 of described inner core 12 activity and extend from described connecting portion 111 and insert
Enter the expansion mouth 112 of described extending port 133.
Described inner core 12 and the hollow cylinder that described urceolus 13 is concentricity axle；Described inner core 12 and described urceolus 13 pass through
The most coaxial rotation in the range of described limiting section 131 and described clamping part 121 and the circular arc length between two described limiting sections 131
Turn；Concrete, between two described limiting sections 131, the length of circular arc string is less than the length of described expansion mouth 112.
By rotating against of described inner core 12 and described urceolus 13, described expansion mouth 112 is along described extending port 133 direction
Stretch out and shrink.
Described limiting section 131 is formed at same level with described clamping part 121.
Described urceolus 13 is one-body molded；Described inner core 12 is one-body molded.
Also include that hinge 14, described hinge 14 connect described enlarging tooth 11 and described inner core 12.
In the present embodiment, in figure 3, drilling rod drives described inner core 12 to rotate counterclockwise, and described urceolus 13 is by described
Clamping part 121 turns clockwise in the range of the circular arc length between two described limiting sections 131；Make described expansion mouth 112 edge
Described extending port 133 direction is shunk.
In the diagram, drilling rod drives described inner core 12 to turn clockwise, and described urceolus 13 passes through described clamping part 121 two
Rotate counterclockwise in the range of circular arc length between individual described limiting section 131；Make described expansion mouth 112 along described extending port 133
Direction is shunk.
Described drilling rod 2 also includes the body 22 being sequentially connected with, stops circle 23 and borded pile 24, and described borded pile 24 is from described
Drill bit 21 extends and is formed, and described body 22, stop circle 23, borded pile 24 and the concentricity axle of drill bit 21 are arranged, described stop circle 23
Internal diameter more than described borded pile 24 and described body 2, and be surrounded on screw thread 241 degree of depth of described borded pile 24 outer wall more than institute
State the screw thread 231 stopping circle 23 outer walls.
Further, the screw thread of the described 231 weeks footpaths of screw thread stopping circle 23 outer walls and described borded pile 241 outer wall 241 weeks
Footpath is identical.This structure ensure that drilling tool 100 piling during, described stop circle 23 structures the hole wall of the stake of the most squeezed one-tenth is entered
Row second time extruding, stops that formation of pile soil is not screwed out direct squeezed pile.
Preferably, the described aspect ratio stopping circle 23 and borded pile 24 is preferably 7:25, actual size requirement, described stop
The height of circle 23 is 70cm, and the height of described borded pile 24 is 250cm, both may insure that the stake holes degree of depth of the most squeezed one-tenth met and has set
Meter requirement, also ensures that borded pile 24 carries out second time and extrudes the hole wall of the stake of the most squeezed one-tenth simultaneously, stops formation of pile soil not
Screwed out direct squeezed pile.
Refer to Fig. 1, present invention also offers the earth-squeezing hole-enlarging stake 300 that this drilling tool 100 of a kind of application has been constructed, described
Earth-squeezing hole-enlarging stake 300 includes soil compaction portion 3 and is positioned at the reamer 4 bottom soil compaction portion 3, and described soil compaction portion 3 includes pile foundation 31 and fills out
Fill the concrete-pile body 32 in pile foundation 31.
Described pile foundation 31 includes being positioned at the soil compaction layer 311 of its inner peripheral, being formed at the female thread of described soil compaction layer 311 inwall
313。
Described concrete-pile body 32 includes the external screw thread 321 being formed at its outer wall, described female thread 313 and described outer spiral shell
Stricture of vagina 321 is spirally connected.
Described reamer 4 includes extending the pile foundation 41 of formation bottom described pile foundation 31, being covered in described pile foundation 41
The grout layer 42 of inwall, the concrete pile head 43 being filled in described grout layer 42.
In the present embodiment, described concrete-pile body 32 and described concrete pile head 43 one form.
The present invention also provides for the construction method of a kind of above-mentioned earth-squeezing hole-enlarging stake 300, comprises the steps:
(1), providing tool to stop the drilling tool of circle, apply described drilling tool to rotate forward and hole earth, described drilling tool exists
The inwall forming pile foundation forms soil compaction layer；
(2), when the drilling depth of described drilling tool reaches the predetermined depth of pile foundation, described drilling tool is stopped；
(3), described drilling tool also include the enlarged footing that is positioned at bottom it, described enlarged footing tool enlarging tooth and extending port, pass through
Described drilling rod drives described enlarged footing to reversely rotate, and described enlarging tooth stretches out, by described expansion laterally through described extending port
Ability to speak is enlarged bottom pile foundation, after forming pile foundation head, stops described drilling tool；
(4), again drive described enlarged footing to rotate forward, make described enlarging tooth stretch into also to inner side through described extending port
After being contained in described extending port, stop described drilling tool；
(5), the inwall to pile foundation head carries out whitewashing and forms grout layer；
(6), whitewashed after, drilling tool spiral shell in pile foundation is gone out, simultaneously successively to concrete perfusion in pile foundation head and pile foundation；
(7), described stop circle outer wall include external screw thread, described external screw thread described soil compaction layer inwall formed with described outside
The female thread of screw-threaded engagement；
(8), in described pile foundation while concrete perfusion to concrete perfusion in described female thread, complete described soil compaction and expand
Hole stake.
The beneficial effects of the present invention is: add stop coil structures, stop that the hole wall of the stake of the most squeezed one-tenth is carried out by circle
Second time extruding, stops that formation of pile soil is not screwed out direct squeezed pile, and its novel structure, pile quality are good, be difficult to bit bouncing；
Inter-pile soil body has layer compaction effect, and pile bearing capacity is high, also will not be contaminated the environment of surrounding；And will be enlarged by head to be set to
Inner core and the double-decker of urceolus, be located at inner core by enlarging tooth, and utilizes the rotation of described enlarged footing, controls stretching of enlarging tooth
Go out and shrink, completing the enlarging to different soil properties, the design of this structure is simple, low cost, effective, be suitable to batch production and promote
Use.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, it is also possible to make improvement, but these belong to the protection model of the present invention
Enclose.
Claims (10)
1. an earth-squeezing hole-enlarging stake, it is characterised in that include soil compaction portion and be positioned at the reamer bottom soil compaction portion, described soil compaction portion
Including pile foundation and the concrete-pile body that is filled in pile foundation, described pile foundation includes being positioned at the soil compaction layer of its inner peripheral, being formed at institute
Stating the female thread of soil compaction layer inwall, described concrete-pile body includes the external screw thread being formed at its outer wall, described female thread and institute
State external thread bolt connection；Described reamer includes extending the pile foundation head of formation bottom described pile foundation, being covered in described pile foundation head
The grout layer of wall, the concrete pile head being filled in described grout layer.
Earth-squeezing hole-enlarging stake the most according to claim 1, it is characterised in that described concrete-pile body and described concrete-pile
First body form.
3. the construction method of an earth-squeezing hole-enlarging stake, it is characterised in that comprise the steps:
(1), providing tool to stop the drilling tool of circle, apply described drilling tool to rotate forward and hole earth, described drilling tool is being formed
The inwall of pile foundation forms soil compaction layer；
(2), when the drilling depth of described drilling tool reaches the predetermined depth of pile foundation, described drilling tool is stopped；
(3), described drilling tool also include the enlarged footing that is positioned at bottom it, described enlarged footing tool enlarging tooth and extending port, by described
Drilling rod drives described enlarged footing to reversely rotate, and described enlarging tooth stretches out, by described enlarging tooth laterally through described extending port
It is enlarged bottom pile foundation, after forming pile foundation head, stops described drilling tool；
(4), again drive described enlarged footing to rotate forward, make described enlarging tooth stretch into inner side through described extending port and house
After described extending port, stop described drilling tool；
(5), the inwall to pile foundation head carries out whitewashing and forms grout layer；
(6), whitewashed after, drilling tool spiral shell in pile foundation is gone out, simultaneously successively to concrete perfusion in pile foundation head and pile foundation；
(7), described stop circle outer wall include external screw thread, described external screw thread described soil compaction layer inwall formed with described external screw thread
The female thread of engagement；
(8), in described pile foundation while concrete perfusion to concrete perfusion in described female thread, complete described earth-squeezing hole-enlarging
Stake.
4. a drilling tool, it is characterised in that: include having the drilling rod of drill bit and be sheathed on the enlarged footing of described drill bit, described enlarged footing
Including enlarging tooth, inner core and the urceolus being sheathed on inner core, and described inner core and described urceolus interval are arranged, and described inner core includes card
Button portion, described urceolus include limiting section and extending port, described limiting section quantity be two and interval be formed at the interior of described urceolus
On periphery, described clamping part is formed on the outer peripheral edge of described inner core and is arranged between two described limiting sections, described in stretch out
Mouth is the through hole running through described urceolus, and described enlarging tooth includes the connecting portion movable with described inner core and extends from described connecting portion
And insert the expansion mouth of described extending port；
Described drilling rod also includes the body being sequentially connected with, stops circle and borded pile, and described borded pile extends from described drill bit and formed,
Described body, stop circle, borded pile and the concentricity axle of drill bit are arranged, and the described internal diameter stopping circle is more than described borded pile with described
Body, and it is surrounded on the depth of thread screw thread more than described stop ring outer wall of described borded pile outer wall.
Drilling tool the most according to claim 4, it is characterised in that: the screw thread Zhou Jing of described stop ring outer wall and described borded pile
The screw thread week footpath of outer wall is identical.
Drilling tool the most according to claim 4, it is characterised in that: described inner core and the open circles that described urceolus is concentricity axle
Cylinder.
Drilling tool the most according to claim 5, it is characterised in that: described inner core and described urceolus are by described limiting section and institute
Reverse coaxial rotating in the range of stating clamping part and the circular arc length between two described limiting sections.
Drilling tool the most according to claim 5, it is characterised in that: between two described limiting sections, the length of circular arc string is less than institute
State the length of expansion mouth.
Drilling tool the most according to claim 4, it is characterised in that: by rotating against of described inner core and described urceolus, institute
State expansion mouth to stretch out along described extending port direction and shrink.
Drilling tool the most according to claim 4, it is characterised in that: described limiting section and described clamping part are formed at same water
Plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610362530.XA CN106049463B (en) | 2016-05-27 | 2016-05-27 | The construction method and its drilling tool of a kind of earth-squeezing hole-enlarging stake and the earth-squeezing hole-enlarging stake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610362530.XA CN106049463B (en) | 2016-05-27 | 2016-05-27 | The construction method and its drilling tool of a kind of earth-squeezing hole-enlarging stake and the earth-squeezing hole-enlarging stake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106049463A true CN106049463A (en) | 2016-10-26 |
| CN106049463B CN106049463B (en) | 2018-07-06 |
Family
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| CN201610362530.XA Active CN106049463B (en) | 2016-05-27 | 2016-05-27 | The construction method and its drilling tool of a kind of earth-squeezing hole-enlarging stake and the earth-squeezing hole-enlarging stake |
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| CN (1) | CN106049463B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252298A (en) * | 2018-01-19 | 2018-07-06 | 河海大学 | A kind of reexpansion stake and its construction method |
| CN109695245A (en) * | 2019-01-17 | 2019-04-30 | 福建省大地管桩有限公司 | The bitubular is exempted to beat tubular pole and lower stake device |
| CN110359853A (en) * | 2019-07-13 | 2019-10-22 | 江龙 | Adaptive half soil compaction is bored and its foundation pile bore forming method |
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| CN108252298A (en) * | 2018-01-19 | 2018-07-06 | 河海大学 | A kind of reexpansion stake and its construction method |
| CN108252298B (en) * | 2018-01-19 | 2019-09-10 | 河海大学 | A kind of reexpansion stake and its construction method |
| CN109695245A (en) * | 2019-01-17 | 2019-04-30 | 福建省大地管桩有限公司 | The bitubular is exempted to beat tubular pole and lower stake device |
| CN109695245B (en) * | 2019-01-17 | 2023-12-08 | 福建省大地管桩有限公司 | Pile discharging method for double-cylinder hammer-free pipe pile |
| CN110359853A (en) * | 2019-07-13 | 2019-10-22 | 江龙 | Adaptive half soil compaction is bored and its foundation pile bore forming method |
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| CN106049463B (en) | 2018-07-06 |
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Effective date of registration: 20210714 Address after: 721499 in Donghu Hotel, north section of Donghu Road, Fengxiang County, Baoji City, Shaanxi Province Patentee after: Fengxiang posent northwest Geotechnical Engineering Co.,Ltd. Address before: 056 Donghu Road, Chengguan Town, Fengxiang County, Baoji City, Shaanxi Province Patentee before: Liu Luhuai |