CN107059849A - A kind of driven cast-in-place pile and its construction technology - Google Patents
A kind of driven cast-in-place pile and its construction technology Download PDFInfo
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- CN107059849A CN107059849A CN201710295401.8A CN201710295401A CN107059849A CN 107059849 A CN107059849 A CN 107059849A CN 201710295401 A CN201710295401 A CN 201710295401A CN 107059849 A CN107059849 A CN 107059849A
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- pile
- cloth bag
- geotechnological cloth
- stake
- pipe
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to ground base enforcement technical field, a kind of driven cast-in-place pile and its construction technology are disclosed, the driven cast-in-place pile is related to pile top, pile pipe, geotechnological cloth bag, pile body and steel reinforcement cage, and technological process is as follows：1) pile top is in place；2) immersed tube；3) it is put into geotechnological cloth bag；4) placing concrete；5) steel reinforcement cage is hung；6) tube drawing；7) it is molded.Present invention, avoiding the constriction stake in traditional driven cast-in-place pile technique, broken pile, the FAQs such as pin stake, pile top water inlet are hung, it is ensured that the shaping of bored concrete pile, so as to effectively increase the bearing capacity of stake.
Description
Technical field
The invention belongs to ground base enforcement technical field, and in particular to a kind of driven cast-in-place pile and its construction technology.
Background technology
Object is processed or deformation after its hardness and intensity can be increased by Ageing Treatment and reduce plasticity, toughness and planted agent
Power.
Driven cast-in-place pile is to use a kind of relatively broad bored concrete pile at present, and the method is also known as casing pipe hole forming bored concrete pile, is fitted
For general cohesive soil, silt, muck soil, mud, the loose sand close into and artificial earth fill etc., standard should not be used in
Blow number N ＞ 12 sand, N ＞ 15 cohesive soil and gravelly soil.The problem of common during construction, has：1) constriction stake, also weighing bottle
Neck, refers to pile body local diameter less than intended diameter, the main cause of generation is：A. in the high cohesive soil of water content during immersed tube,
The soil body receives strong disturbance extruding, produces very high excess pore water pressure, after pile pipe is extracted, excess pore water pressure acts on mixed
On solidifying soil pile body, reduce pile body local diameter；B. pipe-pulling speed is too fast in work progress, pull of vacuum is produced in pipe, if together
When pipe inner concrete amount it is few and workability is poor, cause concrete diffusion effect poor, occur constriction；C. stake spacing is too small, during construction
Pile body reduces when being extruded by Adjacent Pile；2) broken pile, refers to pile body crackle in level or has inclination and insertion total cross-section, be common in ground
1-3 below face meters of different soft and hard soil layer intersection, the main cause of generation is that pilespacing is too small, pile concrete final set soon, by force
Degree is low, and uplift of soil and extruding are made during adjacent stake immersed tube, and producing transverse horizontal force and vertical tension makes concrete pile body breaking；3) hang
Pin stake, the concrete for referring to a bottom is hanging or be mixed into after silt and form soft layer in stake bottom, pile top when producing cause is tube drawing
Now bottom hole is pulled out to certain altitude together in company with pile pipe to be fallen after rise soil filling and formed and hang pin；4) pile top is intake,
During containing sinking to pile pipe in substantial amounts of mud, silty strata, often having water or silt and entering in pile pipe, producing cause be pile top with
Pile tube closes up and has larger space, and the silt of entrance is mixed with concrete causes pile top intensity decreases.
Chinese patent CN103993598A provides one kind and draws implantation cloth bag crushed stone grouting pile and construction method, and its shortcoming exists
In：1) pile top is easily glanced off in decentralization process, so as to cause pile depression of bearing force；2) it is difficult to avoid that before decentralization pile top
Ground has more or less backfill to fall into stake holes bottom, and these soil bodys only carried out by a part of gravity of stake itself it is endless
Full compacting, therefore its later stage settling amount is larger, though pile strength is high, can not effectively undertake the lotus that superstructure is transmitted
Carry.Chinese patent CN104131555A provides a kind of outsourcing water penetration concrete reinforced pipe crushed stone grouting pile and its construction method,
Its shortcoming is：Geotechnological cloth bag is wrapped in pile top and prefabricated tubular pile in outer side, easily causes soil during being pressed into the soil body
The destruction of work cloth bag, but because prefabricated tubular pile is made up of pervious concrete, two reasons are combined together, and will cause what is imported
Concrete is mixed with underground water and silt, and concrete strength lowers, so as to greatly reduce the bearing capacity of stake.It is Chinese special
Sharp CN203594027U provides a kind of cloth bag and expands crowded concrete support disk pile, and its shortcoming is：1) construction procedure is numerous and diverse, cost compared with
It is high；2) its internal geotechnological cloth bag high-pressure slip-casting expands crowded cloth bag high-pressure slip-casting with outside branch and contradicted, because outside branch is squeezed
Include after cloth bag high-pressure slip-casting, the concrete-pile core for just having poured completion and the soil body generation pressure in outside can be internally surveyed simultaneously, by
The concrete strength for being above just having poured in the intensity of the soil body, therefore it is that soil deformation is little to squeeze the result included, it is on the contrary and right
Stake core generates very big crimp, causes pile body area of section anticlimax, depression of bearing force.Chinese patent CN201202116Y
A kind of geotextile bag bulk material follow-up grouting pile is provided, its shortcoming is：Pile top is made up of steel plate, and be not provided with it is any protection arrange
Apply, therefore must occur corrosion causes pile top intensity decreases, so as to have influence on the overall bearing capacity of stake.
The content of the invention
It is an object of the invention to solve above technical problem, there is provided a kind of simple in construction, construction is convenient, high capacity
Driven cast-in-place pile and its construction technology.
To achieve the above object, technical scheme is as follows：
A kind of driven cast-in-place pile, it is characterised in that：Including pile pipe, pile top, geotechnological cloth bag, pile body and steel reinforcement cage.
The pile top is precast concrete pile top.
A kind of immersed tube bored pile constructing process, it is characterised in that：Comprise the following steps：
A. pile top is in place：Sling the precast concrete pile top that pile pipe makes its alignment be embedded in stake position；
B. immersed tube：Pile pipe is pressed into soil together with pile top with piling machine；
C. it is put into geotechnological cloth bag：Geotechnological cloth bag is put into pile pipe；
D. placing concrete：The placing concrete into geotechnological cloth bag；
E. steel reinforcement cage is hung：Steel reinforcement cage is hung into geotechnological cloth bag；
F. tube drawing：Extract pile pipe；
G. it is molded.
The geotechnological cloth bag needs to be put into geotechnological cloth bag and tube drawing by mud lubrication outer surface to reduce before pile pipe is put into
When geotechnological cloth bag and pile pipe frictional force.
The steel reinforcement cage lower end is connected with one section of protection section, it is to avoid steel bar corrosion and geotechnological cloth bag are destroyed.
The concrete should be applied in certain pressure during tube drawing to initial set.
The pressure should ensure that stake holes is not caved in not less than the active earth pressure at all earth's surfaces of stake.
Ageing Treatment should be undergone before the step F. tube drawings, dissipation of excess pore-water pressure tube drawing again is treated.
Because using as above technical scheme, the present invention has advantages below：
1. simple in construction, easy construction of the invention and high capacity；
2. the pressure that concrete self pick-up tube to the initial set in the present invention is continuously applied is not less than the active at all earth's surfaces of stake
Soil pressure, promote the shaping of stake and ensure that stake holes hole wall do not cave in and prevent pile pipe pull up during its not with pile top point
Open, thus prevent stress concentration caused by the abrupt change of cross-section, constriction stake, broken pile, hang pin stake the problems such as appearance；
3. the geotechnological cloth bag of the present invention effectively isolates concrete with underground water and silt, it is therefore prevented that pile body is intake, entered
The problems such as silt；
4. through Wetted constructures before tube drawing of the present invention, dissipated excess pore water pressure, the shaping of stake is promoted.
Brief description of the drawings
Fig. 1 is construction technology schematic diagram of the invention；
Fig. 2 is construction technology F. tube drawing schematic diagrames of the invention；
In figure：1. pile top, 2. pile pipes, 3. geotechnological cloth bags, 4. pile bodies, 5. steel reinforcement cages.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
The embodiment of the present invention is：
Referring to accompanying drawing 1 and Fig. 2, a kind of driven cast-in-place pile, including pile pipe, pile top, geotechnological cloth bag, pile body and steel reinforcement cage.
The pile top is precast concrete pile top.
The course of work of the present embodiment：A kind of immersed tube bored pile constructing process, comprises the following steps：
A. pile top is in place：Sling the precast concrete pile top that pile pipe makes its alignment be embedded in stake position；
B. immersed tube：Pile pipe is pressed into soil together with pile top with piling machine；
C. it is put into geotechnological cloth bag：Geotechnological cloth bag is put into pile pipe；
D. placing concrete：The placing concrete into geotechnological cloth bag；
E. steel reinforcement cage is hung：Steel reinforcement cage is hung into geotechnological cloth bag；
F. tube drawing：Extract pile pipe；
G. it is molded.
The geotechnological cloth bag needs to be put into geotechnological cloth bag and tube drawing by mud lubrication outer surface to reduce before pile pipe is put into
When geotechnological cloth bag and pile pipe frictional force.
The steel reinforcement cage lower end is connected with one section of protection section, it is to avoid steel bar corrosion and geotechnological cloth bag are destroyed.
The concrete should be applied in certain pressure during tube drawing to initial set.
The pressure should ensure that stake holes is not caved in not less than the active earth pressure at all earth's surfaces of stake.
Ageing Treatment should be undergone before the step F. tube drawings, dissipation of excess pore-water pressure tube drawing again is treated.
The above tells that embodiment is only the preferred embodiments of the invention, and technical concept and structure only to illustrate the invention is special
Levy, it is therefore intended that person skilled can be implemented according to this, but above said content is not intended to limit protection scope of the present invention,
Therefore the change that all shape, principles according to the present invention are done, it all should cover within the scope of the present invention.
Claims (8)
1. a kind of driven cast-in-place pile, it is characterised in that：Including pile pipe, pile top, geotechnological cloth bag, pile body and steel reinforcement cage.
2. a kind of driven cast-in-place pile according to claim 1, it is characterised in that：The pile top is precast concrete pile top.
3. a kind of immersed tube bored pile constructing process, it is characterised in that：Comprise the following steps：
A. pile top is in place：Sling the precast concrete pile top that pile pipe makes its alignment be embedded in stake position；
B. immersed tube：Pile pipe is pressed into soil together with pile top with piling machine；
C. it is put into geotechnological cloth bag：Geotechnological cloth bag is put into pile pipe；
D. placing concrete：The placing concrete into geotechnological cloth bag；
E. steel reinforcement cage is hung：Steel reinforcement cage is hung into geotechnological cloth bag；
F. tube drawing：Extract pile pipe；
G. it is molded.
4. a kind of immersed tube bored pile constructing process according to claim 3, it is characterised in that：The geotechnological cloth bag is being put into
The frictional force of geotechnological cloth bag and pile pipe when needing to be put into geotechnological cloth bag and tube drawing by mud lubrication outer surface to reduce before pile pipe.
5. a kind of immersed tube bored pile constructing process according to claim 3, it is characterised in that：The steel reinforcement cage lower end is connected with
One section of protection section, it is to avoid steel bar corrosion and geotechnological cloth bag are destroyed.
6. a kind of immersed tube bored pile constructing process according to claim 3, it is characterised in that：The concrete in tube drawing extremely
Certain pressure should be applied in during initial set.
7. a kind of immersed tube bored pile constructing process according to claim 6, it is characterised in that：The pressure should be not less than stake
Active earth pressure at all earth's surfaces is to ensure that stake holes is not caved in.
8. a kind of immersed tube bored pile constructing process according to claim 3, it is characterised in that：Should before the step F. tube drawings
Ageing Treatment is undergone, dissipation of excess pore-water pressure tube drawing again is treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295401.8A CN107059849A (en) | 2017-04-28 | 2017-04-28 | A kind of driven cast-in-place pile and its construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295401.8A CN107059849A (en) | 2017-04-28 | 2017-04-28 | A kind of driven cast-in-place pile and its construction technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107059849A true CN107059849A (en) | 2017-08-18 |
Family
ID=59605116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710295401.8A Pending CN107059849A (en) | 2017-04-28 | 2017-04-28 | A kind of driven cast-in-place pile and its construction technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113043A (en) * | 2018-08-15 | 2019-01-01 | 绿山高科建设科技有限公司 | A kind of concrete-pile composite foundation structure |
| CN110792078A (en) * | 2019-10-18 | 2020-02-14 | 龙德建设有限公司 | Construction method of immersed tube cast-in-place pile |
| CN111549770A (en) * | 2020-05-15 | 2020-08-18 | 中国电建集团成都勘测设计研究院有限公司 | Construction method of pipe sinking cast-in-place pile in backfill soil layer |
| CN111926868A (en) * | 2020-06-12 | 2020-11-13 | 同创工程设计有限公司 | Simulation immersed tube stake end defect processing's work progress presentation device |
| CN113463625A (en) * | 2020-03-30 | 2021-10-01 | 上海三航奔腾海洋工程有限公司 | Immersed tube and construction method of immersed tube cast-in-place pile |
| CN114351692A (en) * | 2022-01-26 | 2022-04-15 | 江苏省海洋资源开发研究院(连云港) | Composite stiffness core pile for reinforcing soft soil and forming method |
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| CN103114578A (en) * | 2013-02-06 | 2013-05-22 | 上海市建工设计研究院有限公司 | Grouting molding pedestal pile and construction method thereof and pedestal expanding device |
| JP2013194374A (en) * | 2012-03-16 | 2013-09-30 | East Japan Railway Co | Construction method of cast-in-place pile and manufacturing method of cast-in-place pile |
| CN103741679A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Production method for pipe sinking cast-in-place file |
| CN103993598A (en) * | 2014-05-19 | 2014-08-20 | 杭州江润科技有限公司 | Crashed stone grouting pile with lead holes implanted in cloth bag and construction method |
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| JP2013194374A (en) * | 2012-03-16 | 2013-09-30 | East Japan Railway Co | Construction method of cast-in-place pile and manufacturing method of cast-in-place pile |
| CN103114578A (en) * | 2013-02-06 | 2013-05-22 | 上海市建工设计研究院有限公司 | Grouting molding pedestal pile and construction method thereof and pedestal expanding device |
| CN103741679A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Production method for pipe sinking cast-in-place file |
| CN103993598A (en) * | 2014-05-19 | 2014-08-20 | 杭州江润科技有限公司 | Crashed stone grouting pile with lead holes implanted in cloth bag and construction method |
Non-Patent Citations (1)
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| 王菊英等: "布袋混凝土灌注桩施工的工艺要点", 《青海交通科技》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113043A (en) * | 2018-08-15 | 2019-01-01 | 绿山高科建设科技有限公司 | A kind of concrete-pile composite foundation structure |
| CN110792078A (en) * | 2019-10-18 | 2020-02-14 | 龙德建设有限公司 | Construction method of immersed tube cast-in-place pile |
| CN113463625A (en) * | 2020-03-30 | 2021-10-01 | 上海三航奔腾海洋工程有限公司 | Immersed tube and construction method of immersed tube cast-in-place pile |
| CN111549770A (en) * | 2020-05-15 | 2020-08-18 | 中国电建集团成都勘测设计研究院有限公司 | Construction method of pipe sinking cast-in-place pile in backfill soil layer |
| CN111926868A (en) * | 2020-06-12 | 2020-11-13 | 同创工程设计有限公司 | Simulation immersed tube stake end defect processing's work progress presentation device |
| CN114351692A (en) * | 2022-01-26 | 2022-04-15 | 江苏省海洋资源开发研究院(连云港) | Composite stiffness core pile for reinforcing soft soil and forming method |
| CN114351692B (en) * | 2022-01-26 | 2023-08-18 | 江苏海洋大学 | Composite stiffening core pile for soft soil reinforcement and forming mode |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170818 |
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