CN107012861B - A kind of discrete material core expansive concrete stake and its construction method - Google Patents
A kind of discrete material core expansive concrete stake and its construction method Download PDFInfo
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- CN107012861B CN107012861B CN201710168970.6A CN201710168970A CN107012861B CN 107012861 B CN107012861 B CN 107012861B CN 201710168970 A CN201710168970 A CN 201710168970A CN 107012861 B CN107012861 B CN 107012861B
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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 present invention provides a kind of discrete material core expansive concrete stake and its construction method.The discrete material core expansive concrete stake includes the stake of concrete semi-hollow and discrete material pile core.The concrete semi-hollow stake it is interior it is intracavitary be filled with discrete material pile core.The construction method of the discrete material core expansive concrete stake includes that pore-forming, steel-pipe pile mould push, bored concrete pile all concrete, investment pile body center discrete material, vibration pile pulling mould and mends slurry pile in vitro.The discrete material core expansive concrete stake pile body center discrete material good integrity, intensity are high.Pile body total bearing capacity is high, and rigidity is big.Construction cost is low, low-carbon green.It can be widely applied in foundation engineering.
Description
Technical field
The present invention relates to civil construction project technical field, in particular to a kind of discrete material core expansive concrete stake and its
Construction method.
Background technique
In China Democratic National Construction Association, road, harbour, science of bridge building, pile foundation is extensive.Solid concrete bored concrete pile and broken stone pile at present
Equal discrete material piles are pile foundation types common in engineering.The ultimate bearing capacity of pile foundation depends on the frictional resistance that pile peripheral earth provides
The small value of power limiting value and self structure bearing capacity limiting value.When pile body reaches capacity bearing capacity, solid concrete stake mixes stake
Body structure bearing capacity is much larger than the frictional resistance that pile peripheral earth provides, and unit materials utilization rate is low；Discrete material pile is due to its pile body
Lateral rigidity is smaller, is easy to produce oxygen blast cyanidation, and bearing capacity is lower, cannot give full play to the frictional resistance and end bearing of soil body offer
Power, it is difficult to obtain biggish bearing capacity.In addition, being produced very with the quickening of China's urban construction and Support during Old City Reconstruction process
The building wastes such as more waste bricks, concrete block, how using these building wastes produce stock utilization height, pile body structure
Bearing capacity and Skin friction performance more balance, and low-carbon green makes full use of the pile-type of building waste, are to be worth research
Project.
Summary of the invention
The object of the present invention is to provide a kind of low-carbon green, using building waste and the good discrete material core of pile-forming effect
Expansive concrete stake and its construction method solve in the prior art, and pile foundation globality poor, bearing capacity and stiffness are low and construct
The problems such as at high cost.
To realize the present invention purpose and the technical solution adopted is that such, a kind of discrete material core expansive concrete stake
Construction method, comprising the following steps:
1) according to geological conditions, stake holes is drilled in soil layer using drilling machine to projected depth.
2) hoisting steel pipe pile mould, align piles position adjust the verticality of steel-pipe pile mould, then press and steel-pipe pile molding is buried
To designed elevation in layer.Wherein, the steel-pipe pile mould is the open hollow cylinder of upper and lower side.
3) concrete slurry is injected by grouting pump between steel-pipe pile mould and stake holes hole wall.
4) discrete material is put into steel-pipe pile mold cavity, forms discrete material pile core.Wherein, the discrete material pile core
Top is lower than stake top.
5) steel-pipe pile mould is pulled up in vibration by machine, in the process, every concrete of a distance after-teeming
Slurries.
6) after-teeming concrete slurry is carried out when steel-pipe pile mould reaches stake top, until pile pulling mould is completed.Wherein, the coagulation
Soil paste liquid did not had discrete material pile core, and concrete slurry is filled to stake top and grading.Stake top bleeding is abundant.Concrete slurry
Consolidation forms concrete semi-hollow stake.
Further, stake holes described in step 1) uses mud off.
It further, further include the correlation step that mud borehole cleaning is injected in stake holes before being put into steel-pipe pile mould in step 2).
Further, the lower end open-mouth of the steel-pipe pile mould has sharp cutter.
It further, further include injecting mud between steel-pipe pile mould and stake holes hole wall before injecting concrete slurry in step 3)
Borehole cleaning is put into the correlation step of steel reinforcement cage after borehole cleaning.
Further, the concrete uses expansive concrete.
Invention additionally discloses a kind of using discrete material core expansive concrete stake made of the above method, including implantation soil layer
The interior stake of concrete semi-hollow and discrete material pile core.
The concrete semi-hollow stake includes filled circles stanchion and hollow shell pill.The hollow shell pill is set to solid cylinder
The bottom of stake.The filled circles stanchion and hollow shell pill are an entirety.
The hollow shell pill it is interior it is intracavitary be filled with discrete material pile core.The discrete material of the discrete material pile core uses
Building waste and/or rubble.The concrete semi-hollow stake and discrete material pile core rubber knot are solidified as an entirety.
Further, there is pile body main reinforcement and pile body tie hoop in the concrete semi-hollow stake.The pile body main reinforcement and
Pile body tie hoop collectively forms steel reinforcement cage.
Further, the steel reinforcement cage is spliced by more piece steel reinforcement cage.Each section steel reinforcement cage is by the way of welding or riveting
It is fixed.
The solution have the advantages that unquestionable:
A) pile body center discrete material good integrity, intensity are high.Pile body total bearing capacity is high, and rigidity is big；
B) pile body periphery expansive concrete pile body can make uplift pile use after being built into steel reinforcement cage；
C) building waste can be used in pile body center discrete material, reduces construction cost, low-carbon green；
D) construction technology is simply clear, and speed of application is fast, and pile-forming effect is good.
Detailed description of the invention
Fig. 1 is discrete material core expansive concrete pilework schematic diagram；
Fig. 2 is Section A-A figure；
Fig. 3 is steel-pipe pile mode structure schematic diagram；
Fig. 4 is discrete material core expansive concrete pile driving construction flow diagram.
In figure: discrete material pile core 1, concrete semi-hollow stake 2, filled circles stanchion 201, hollow shell pill 202, reinforcing bar
Cage 3, pile body main reinforcement 301, pile body tie hoop 302, steel-pipe pile mould 4.
Specific embodiment
Below with reference to embodiment, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention only
It is limited to following embodiments.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and used
With means, various replacements and change are made, should all include within the scope of the present invention.
Embodiment 1:
The present embodiment discloses a kind of construction method of discrete material core expansive concrete stake, referring to fig. 4, including following step
It is rapid:
1) according to geological conditions, stake holes pore-forming: is drilled in soil layer using drilling machine to projected depth.Wherein, the stake holes
Using mud off.
2) steel-pipe pile mould pushes: mud borehole cleaning is injected in stake holes.Hoisting steel pipe pile mould 4, align piles position adjust steel-pipe pile
The verticality of mould 4.Then it presses and steel-pipe pile mould 4 is pressed into soil layer to designed elevation.Referring to Fig. 3, the steel-pipe pile mould 4 is upper
The open hollow cylinder in lower end.The lower end open-mouth of the steel-pipe pile mould 4 has sharp cutter.The cutter is inserted into hole
Depth >=0.5 meter at bottom.
3) bored concrete pile all expansive concretes in vitro: mud borehole cleaning is injected between steel-pipe pile mould 4 and stake holes hole wall, borehole cleaning finishes
After be put into steel reinforcement cage 3.Expansive concrete slurries are injected by grouting pump between steel-pipe pile mould 4 and stake holes hole wall.
4) it puts into pile body center discrete material: putting into discrete material into 4 inner cavity of steel-pipe pile mould, form discrete material pile core
1.Wherein, stake top is lower than at the top of the discrete material pile core 1.
5) it vibrates pile pulling mould: steel-pipe pile mould 4 is pulled up in vibration by machine, in the process, a part expansion coagulation
Soil paste liquid can enter in discrete material pile core 2, and a periphery Starch Level is caused to reduce.Stake every extraction swelled mixture of 2 meters of after-teemings of mould
Solidifying soil paste liquid.
6) it mends slurry pile: carrying out after-teeming expansive concrete slurries when steel-pipe pile mould 4 reaches stake top, until pile pulling mould is complete
At.Wherein, the expansive concrete slurries did not had discrete material pile core 1, and expansive concrete slurries are filled flat to stake top and earth's surface
It is whole.Stake top bleeding is abundant.Expansive concrete slurry consolidation forms expansive concrete semi-hollow stake 2.
2 pairs of discrete material pile cores 1 of concrete semi-hollow stake have crowd in-out effects.Meanwhile a part of expansive concrete slurries into
Enter discrete material and plays cementing reinforcement effect.Concrete semi-hollow stake 2 also generates constraint to discrete material pile core 1 and improves its rigidity,
Preventing it from oxygen blast cyanidation laterally occurs influences pile body bearing capacity.
Embodiment 2:
It is a kind of to use discrete material core expansive concrete stake made of 1 the method for embodiment, including in implantation soil layer
Concrete semi-hollow stake 2 and discrete material pile core 1.
Referring to Fig. 1, the concrete semi-hollow stake 2 includes filled circles stanchion 201 and hollow shell pill 202.The hollow pipe
Stake 202 is set to the bottom of filled circles stanchion 201.The filled circles stanchion 201 and hollow shell pill 202 are an entirety.Referring to
Fig. 2, the concrete semi-hollow stake 2 is interior to have pile body main reinforcement 301 and pile body tie hoop 302.The pile body main reinforcement 301 and stake
Body tie hoop 302 collectively forms steel reinforcement cage 3.The steel reinforcement cage 3 is spliced by more piece steel reinforcement cage.Each section steel reinforcement cage is using weldering
The mode for connecing or riveting is fixed.
The hollow shell pill 202 it is interior it is intracavitary be filled with discrete material pile core 1.The granular media material of the discrete material pile core 1
Material uses building waste and/or rubble.The concrete semi-hollow stake 2 and discrete material pile core 1 is cementing is solidified as an entirety.
Claims (9)
1. a kind of construction method of discrete material core expansive concrete stake, which comprises the following steps:
1) according to geological conditions, stake holes is drilled in soil layer using drilling machine to projected depth；
2) hoisting steel pipe pile mould (4), align piles position adjust the verticality of steel-pipe pile mould (4), then press steel-pipe pile mould (4)
It is pressed into soil layer to designed elevation；Wherein, the steel-pipe pile mould (4) is the open hollow cylinder of upper and lower side；
3) concrete slurry is injected by grouting pump between steel-pipe pile mould (4) and stake holes hole wall；
4) discrete material is put into steel-pipe pile mould (4) inner cavity, is formed discrete material pile core (1)；Wherein, the discrete material pile
It is lower than stake top at the top of core (1)；
5) steel-pipe pile mould (4) are pulled up in vibration by machine, in the process, every a distance in steel-pipe pile mould (4) and
Concrete slurry of after-teeming between stake holes hole wall；
6) after-teeming concrete slurry is carried out when steel-pipe pile mould (4) reach stake top, until pile pulling mould is completed；Wherein, the coagulation
Soil paste liquid did not had discrete material pile core (1), and concrete slurry is filled to stake top and grading；Stake top bleeding is abundant；Concrete
Slurry consolidation forms the stake of concrete semi-hollow (2).
2. a kind of construction method of discrete material core expansive concrete stake according to claim 1, it is characterised in that: step
1) stake holes described in uses mud off.
3. a kind of construction method of discrete material core expansive concrete stake according to claim 1, it is characterised in that: step
It 2) further include the correlation step that mud borehole cleaning is injected in stake holes before being put into steel-pipe pile mould (4) in.
4. a kind of construction method of discrete material core expansive concrete stake according to claim 1, it is characterised in that: described
The lower end open-mouth of steel-pipe pile mould (4) has sharp cutter.
5. a kind of construction method of discrete material core expansive concrete stake according to claim 1, it is characterised in that: step
It 3) further include that mud borehole cleaning is injected between steel-pipe pile mould (4) and stake holes hole wall, after borehole cleaning before injecting concrete slurry in
It is put into the correlation step of steel reinforcement cage (3).
6. a kind of construction method of discrete material core expansive concrete stake according to claim 1, it is characterised in that: described
Concrete uses expansive concrete.
7. a kind of using discrete material core expansive concrete stake made of claim 1 the method, it is characterised in that: including planting
Concrete semi-hollow stake (2) and discrete material pile core (1) in underground layer；
The concrete semi-hollow stake (2) includes filled circles stanchion (201) and hollow shell pill (202)；The hollow shell pill (202)
It is set to the bottom of filled circles stanchion (201)；The filled circles stanchion (201) and hollow shell pill (202) are an entirety；
The hollow shell pill (202) it is interior it is intracavitary be filled with discrete material pile core (1)；The granular media of the discrete material pile core (1)
Material uses building waste and/or rubble；The concrete semi-hollow stake (2) and discrete material pile core (1) is cementing is solidified as one
A entirety.
8. a kind of discrete material core expansive concrete stake according to claim 7, it is characterised in that: the concrete is in midair
There is pile body main reinforcement (301) and pile body tie hoop (302) in heart stake (2)；The pile body main reinforcement (301) and pile body tie hoop
(302) steel reinforcement cage (3) are collectively formed.
9. a kind of discrete material core expansive concrete stake according to claim 8, it is characterised in that: the steel reinforcement cage (3)
It is spliced by more piece steel reinforcement cage；Each section steel reinforcement cage is fixed by the way of welding or riveting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710168970.6A CN107012861B (en) | 2017-03-21 | 2017-03-21 | A kind of discrete material core expansive concrete stake and its construction method |
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| CN201710168970.6A CN107012861B (en) | 2017-03-21 | 2017-03-21 | A kind of discrete material core expansive concrete stake and its construction method |
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| CN107012861A CN107012861A (en) | 2017-08-04 |
| CN107012861B true CN107012861B (en) | 2019-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220298738A1 (en) * | 2020-01-07 | 2022-09-22 | Bauer Spezialtiefbau Gmbh | Method for producing a foundation element in the ground and foundation element |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577307A (en) * | 2019-01-10 | 2019-04-05 | 上海市市政规划设计研究院有限公司 | Combination of rigidity and flexibility stake and its construction method |
| CN111254909B (en) * | 2020-01-18 | 2022-06-14 | 陕西建工基础建设集团有限公司 | Construction process of composite pile foundation of soft soil area foundation |
| CN111733799A (en) * | 2020-06-10 | 2020-10-02 | 合肥工业大学 | Forming method for self-wall-protection large-diameter concrete hollow pipe column foundation |
| CN114908736B (en) * | 2022-06-16 | 2024-06-04 | 西藏大学 | Novel pile foundation suitable for soft soil foundation treatment and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101245609B1 (en) * | 2011-04-22 | 2013-03-20 | 한국건설기술연구원 | Constructing Method of Steel Pile in Sea Ground |
| CN102505684B (en) * | 2011-11-02 | 2014-09-10 | 河海大学 | Hollow stiffness-core slurry-solidified discrete material pile and construction method thereof |
| CN203583777U (en) * | 2013-09-23 | 2014-05-07 | 江苏建筑职业技术学院 | Prestressed round-pile core-filled concrete column |
| CN105220687B (en) * | 2014-06-30 | 2017-04-05 | 中国一冶集团有限公司 | Prestressed concrete pipe pile grouting behind shaft or drift lining method fills core reinforcing construction method |
| CN104196004A (en) * | 2014-08-22 | 2014-12-10 | 中国建筑西南勘察设计研究院有限公司 | Overall length core pouring prestress pipe pile composite foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220298738A1 (en) * | 2020-01-07 | 2022-09-22 | Bauer Spezialtiefbau Gmbh | Method for producing a foundation element in the ground and foundation element |
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