CN108411909A - A kind of high intensity can drain prefabricating composite pile - Google Patents
A kind of high intensity can drain prefabricating composite pile Download PDFInfo
- Publication number
- CN108411909A CN108411909A CN201810352717.0A CN201810352717A CN108411909A CN 108411909 A CN108411909 A CN 108411909A CN 201810352717 A CN201810352717 A CN 201810352717A CN 108411909 A CN108411909 A CN 108411909A
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- China
- Prior art keywords
- pile
- high intensity
- composite pile
- drain
- pervious concrete
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- E02D5/58—Prestressed concrete piles
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a kind of high intensity can drain prefabricating composite pile, is a kind of new compound pile-type developed on the basis of traditional prefabricated pile and pervious concrete material.The composite pile radially divides three layers, respectively internal layer prestressed-concrete pile body, middle level pervious concrete cylinder and outer layer pipe；It is provided with permeable hole on the outer layer pipe wall surface, the high intensity of internal layer prestressed concrete and the radial constraint effect of outer layer pipe ensure that the high intensity of composite pile, the trepanning of outer layer pipe wall surface and the setting of middle level pervious concrete cylinder then provide drainage channel for foundation soil pore pressure dissipation and consolidation.There is the composite pile of the present invention high intensity vertically to enhance, the multiple action mechanism of discharging consolidation inter-pile soil, and pile body is simple for structure, is easy to industrialized production.
Description
Technical field
The present invention relates to geotechnical engineering foundation stabilization fields, and in particular to a kind of high intensity can drain prefabricating composite pile, especially
It is suitable for pile foundation engineerings and basement process that deep soft soil foundation is reinforced.
Background technology
With the continuous deep implementation promoted with cities and towns green building of Energy Saving Technique for Buildings in Our Country, prefabrication and assembly constructionization construction
As the inexorable trend of engineering construction field development.In recent years, precast concrete pile is because its production technology is advanced, industrialization degree
The technologies such as height, stable quality, short construction period, economic advantages, in China, foundation engineering and field of foundation treatment are answered extensively
With especially using prestressed high-strength concrete pile PHC, thin-wall pipe pile PTC as the technology of the pile for prestressed pipe of representative, economic benefit
It is especially pronounced.Such stake often has larger rigidity and intensity, in engineering be directly used as pile foundation or with inter-pile soil one
Composition rigid pile composite foundation is played, the requirement to foundation bearing capacity and the control technique of settlement after construction is easier to meet in engineering, and it is traditional
Cast-in-situ bored pile, cement mixing pile etc. are compared, and not only technology is reasonable, quality controllable, but also can shorten the construction period, is cost-effective.But
It is that pile shaft material mostly uses high grade（Not less than C60）Concrete, material water penetration itself is relatively low, and is mostly used in constructing quiet
Pressure or hammer-impact construction, belong to typical Squeezing Soil Pile, since Pile side soil is squeezed, disturb, remold in pile driving process, generate compared with
Big excess pore water pressure.This excess pore water pressure is easy to make foundation soil protuberance and horizontal squeeze out and lead to neighbouring pile sinking base
The diseases such as deviation, " floating stake " or even broken pile are generated, even if carrying out arrangement and method for construction optimization in Pile-Sinking Sequence etc., are still difficult to protect
Demonstrate,prove pile sinking quality and its load-carrying properties.In deep saturated soft soil region, this soil compaction effect and disease of prefabricated pile are especially pronounced.
In recent years, pervious concrete is gradually in engineering field application.Pervious concrete be using simple grain grade coarse aggregate as skeleton,
Cement grout is cementing matter, and the porous concrete material of skeleton-pore structure of formation, being used as pile shaft material can form
Water coagulation soil stake.Permeable concrete pile has good water penetration, can be provided for surrounding soil due to its own design feature
Vertical drainage channel accelerates the foundation soil consolidation draining time, can substantially cut down foundation soil Super-void Water Pressure caused by soil compaction during pile driving
Power, but the intensity of pervious concrete material is not generally high, bearing capacity of pile is restricted, to limit it in pile foundation engineering
With the application in basement process.
Invention content
The purpose of the present invention is to provide a kind of high intensity can drain prefabricating composite pile, to solve concrete in the prior art
The intensity of stake is insufficient, foundation soil pore pressure dissipation and consolidation draining difference problem.
A kind of high intensity of the present invention can drain the technical solution of prefabricating composite pile：A kind of high intensity can drain prefabricated multiple
Stake is closed, including the radial internal layer prestressed-concrete pile body set gradually from inside to outside, is wrapped in internal layer prestressed-concrete pile
Middle level pervious concrete cylinder on wall and the outer layer pipe being wrapped on the pervious concrete drum outer wall of middle level in vitro, outer layer pipe
Permeable hole is provided in steel pipe walls.
The pervious concrete for forming middle level pervious concrete cylinder is made of cement, coarse aggregate, water, outer-penetrating agent, wherein cement：
Coarse aggregate：Water：Outer-penetrating agent=1:4~5:0.3~0.35:0.02~0.03（Weight ratio）.
The permeable hole is the block form pore space structure being set on outer layer pipe or staggered pore space structure.
Each hole diameter of pore space structure is 1.5 ~ 2.0 times of coarse aggregate maximum particle diameter in pervious concrete, to keep saturating
The good Permeable characteristic of water coagulation soil.
The coarse aggregate grain size is 10~15mm.
The compression strength for forming the pervious concrete of middle level pervious concrete cylinder is not less than 20MPa, and infiltration coefficient is not less than
3mm/s。
The strength grade of concrete of the internal layer prestressed-concrete pile is not less than C50.
The thickness of the middle level pervious concrete cylinder is 150 ~ 200mm.
The length of the prefabricating composite pile is 8 ~ 12m.
The lower end of the prefabricating composite pile is equipped with the pile shoe structure of cone.
The beneficial effects of the invention are as follows：The technical characterstic of the present invention is permeable mixed by internal layer prestressed-concrete pile, middle level
Solidifying soil cylinder and outer layer pipe collectively constitute composite pile, and the high intensity of internal layer prestressed-concrete pile is the base of composite pile high intensity
Plinth, middle level pervious concrete cylinder provide good drainage channel for composite pile, and the radial constraint effect of outer layer pipe is played into one
The effect of composite pile intensity is walked, while the permeable hole that its wall surface opens up also functions to the work for keeping pervious concrete cylinder high water-permeability
With.The high intensity of internal layer prestressed concrete and the radial constraint effect of outer layer pipe ensure the high intensity of composite pile, outer layer
The trepanning of steel pipe wall surface and the setting of middle level pervious concrete cylinder then provide drainage channel for foundation soil pore pressure dissipation and consolidation.Cause
This, by the innovation of pile body structure, prefabricating composite pile proposed by the invention not only has traditional prestressed-concrete pile high-strength
The mechanics feature of degree, high rigidity, and have both the powerful lasting drainability conducive to foundation soil pore pressure dissipation and consolidation draining, energy
It significantly improves the consolidation efficiency of foundation soil and continues to and strengthen the ability of later stage foundation soil consolidation effect；Meanwhile technology
Feature is conducive to large-scale industrial production, meets energy-saving and environment-friendly prefabricated construction trend, can be widely applied to building, public affairs
The pile foundation engineering of the engineerings such as road, railway, water conservancy, harbour, municipal works and foundation stabilization.
Description of the drawings
Fig. 1 is the diagrammatic cross-section that a kind of high intensity of the present invention can drain one embodiment of prefabricating composite pile；
Fig. 2 is the cross-sectional view of Fig. 1；
Wherein：1 internal layer prestressed-concrete pile body；2 middle level pervious concrete cylinders；3 outer layer pipes.
Specific implementation mode
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
A kind of high intensity of the present invention can drain prefabricating composite pile, as depicted in figs. 1 and 2, radially divide three from inside to outside
Layer, from inside to outside respectively internal layer prestressed-concrete pile body 1, middle level pervious concrete cylinder 2 and outer layer pipe 3.Internal layer is answered in advance
The strength grade of concrete of power concrete pile body 1 must not be less than C50.Middle level pervious concrete cylinder 2 is wrapped in above-mentioned internal layer and answers in advance
1 radial outer wall of power concrete pile body, thickness are 150 ~ 200mm.Formed middle level pervious concrete cylinder pervious concrete by cement,
Coarse aggregate, water, outer-penetrating agent composition, wherein cement：Coarse aggregate：Water：Outer-penetrating agent=1:4~5:0.3~0.35:0.02~0.03（Weight
Than）, coarse aggregate grain size is preferably 10~15mm.Pervious concrete compression strength is not less than 20MPa, and infiltration coefficient is not less than 3mm/s.
Outer layer pipe 3 is wrapped in above-mentioned 2 radial outer wall of middle level pervious concrete cylinder, provides constraint to improve entire pile body
Intensity is provided with permeable hole in the steel pipe walls of outer layer pipe 3, and permeable hole is the block form pore space structure being set on outer layer pipe
Or staggered pore space structure, each hole diameter of pore space structure are 1.5 ~ 2.0 times of coarse aggregate maximum particle diameter in pervious concrete,
To keep the good Permeable characteristic of pervious concrete.The high intensity of the present invention can drain the single-unit precast length one of prefabricating composite pile
As be 8 ~ 12m, can be according to the prefabricated corresponding compound pile length of single-unit of requirement of engineering in other embodiment.When site operation, according to setting
Meter stake is long to carry out Jointing using manual electric arc welding or carbon dioxide gas arc welding, and the welding number of plies is no less than three layers.It is prefabricated
Composite pile at the scene pile sinking when, head section stake lower end be preferably designed as cone pile shoe structure.
In the prefabricating composite pile structure of the present invention, the high intensity of internal layer prestressed concrete and the radial constraint of outer layer pipe
Effect ensures that the high intensity of composite pile, the trepanning of outer layer pipe wall surface and the setting of middle level pervious concrete cylinder are then foundation soil hole
Pressure dissipate and consolidation provide drainage channel so that prefabricating composite pile have high intensity vertically enhance, discharging consolidation inter-pile soil it is more
The weight mechanism of action, and pile body is simple for structure, is easy to industrialized production.
The invention avoids caused excess pore water pressures when traditional prefabricated pile pile sinking to adversely affect, accelerates foundation soil row
The shortcomings that water consolidates and overcomes pervious concrete limited strength, can not only ensure high intensity, the high rigidity of compound pile body, and
And powerful lasting drainability is had both, be conducive to the discharging consolidation of foundation soil；Pile body structure is novel succinct, is easy to factory's metaplasia
Prefabricated assembled construction is convenient in production.
Claims (10)
1. a kind of high intensity can drain prefabricating composite pile, it is characterised in that：It is pre- including the radial internal layer set gradually from inside to outside
Prestressed concrete pile body, the middle level pervious concrete cylinder being wrapped on the external wall of internal layer prestressed-concrete pile and it is wrapped in middle level
Outer layer pipe on pervious concrete drum outer wall is provided with permeable hole in the steel pipe walls of outer layer pipe.
2. high intensity according to claim 1 can drain prefabricating composite pile, it is characterised in that：Form middle level pervious concrete
The pervious concrete of cylinder is made of cement, coarse aggregate, water, outer-penetrating agent, wherein cement：Coarse aggregate：Water：Outer-penetrating agent=1:4~5:0.3
~0.35:0.02~0.03（Weight ratio）.
3. high intensity according to claim 2 can drain prefabricating composite pile, it is characterised in that：The permeable hole is to be set to
Block form pore space structure on outer layer pipe or staggered pore space structure.
4. high intensity according to claim 3 can drain prefabricating composite pile, it is characterised in that：Each hole of pore space structure is straight
Diameter is 1.5 ~ 2.0 times of coarse aggregate maximum particle diameter in pervious concrete, to keep the good Permeable characteristic of pervious concrete.
5. high intensity according to claim 4 can drain prefabricating composite pile, it is characterised in that：The coarse aggregate grain size is 10
~15mm.
6. high intensity according to claim 1 can drain prefabricating composite pile, it is characterised in that：Form middle level pervious concrete
The compression strength of the pervious concrete of cylinder is not less than 20MPa, and infiltration coefficient is not less than 3mm/s.
7. high intensity according to claim 1 can drain prefabricating composite pile, it is characterised in that：The internal layer prestressed concrete
The strength grade of concrete of native stake is not less than C50.
8. high intensity according to claim 1 can drain prefabricating composite pile, it is characterised in that：The middle level pervious concrete
The thickness of cylinder is 150 ~ 200mm.
9. high intensity according to claim 1 can drain prefabricating composite pile, it is characterised in that：The length of the prefabricating composite pile
For 8 ~ 12m.
10. the high intensity according to any one of claim 1-9 can drain prefabricating composite pile, it is characterised in that：This is prefabricated
The lower end of composite pile is equipped with the pile shoe structure of cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810352717.0A CN108411909A (en) | 2018-04-19 | 2018-04-19 | A kind of high intensity can drain prefabricating composite pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810352717.0A CN108411909A (en) | 2018-04-19 | 2018-04-19 | A kind of high intensity can drain prefabricating composite pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108411909A true CN108411909A (en) | 2018-08-17 |
Family
ID=63135932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810352717.0A Pending CN108411909A (en) | 2018-04-19 | 2018-04-19 | A kind of high intensity can drain prefabricating composite pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108411909A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636414A (en) * | 2020-06-02 | 2020-09-08 | 齐鲁交通发展集团有限公司 | Bearing type pervious concrete-ECC (error correction code) composite precast pile and preparation method thereof |
| CN113684842A (en) * | 2021-08-26 | 2021-11-23 | 武汉大学 | High-toughness functionally-graded material slide-resistant pile and construction method |
| CN115262535A (en) * | 2022-01-21 | 2022-11-01 | 郑州航空工业管理学院 | Variable-cross-section soil-squeezing precast tubular pile and construction process |
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| CN205591212U (en) * | 2016-03-22 | 2016-09-21 | 上海岩土工程勘察设计研究院有限公司 | Multi -functional precast tubular pile |
| CN107604929A (en) * | 2017-09-20 | 2018-01-19 | 兰州理工大学 | The anti-liquefaction friction pile of integrate draining and construction method |
| CN208563314U (en) * | 2018-04-19 | 2019-03-01 | 北京泰斯特工程检测有限公司 | A kind of high intensity can drain prefabricating composite pile |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201202113Y (en) * | 2008-05-29 | 2009-03-04 | 中冶交通工程技术有限公司 | Concrete bearing pile |
| CN205088671U (en) * | 2015-11-12 | 2016-03-16 | 中国电建集团成都勘测设计研究院有限公司 | Precast concrete drainage stake |
| CN205591212U (en) * | 2016-03-22 | 2016-09-21 | 上海岩土工程勘察设计研究院有限公司 | Multi -functional precast tubular pile |
| CN105735252A (en) * | 2016-03-31 | 2016-07-06 | 海南大学 | Perforated pipe no-fines pervious concrete pile and assembly structure and construction method thereof |
| CN107604929A (en) * | 2017-09-20 | 2018-01-19 | 兰州理工大学 | The anti-liquefaction friction pile of integrate draining and construction method |
| CN208563314U (en) * | 2018-04-19 | 2019-03-01 | 北京泰斯特工程检测有限公司 | A kind of high intensity can drain prefabricating composite pile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636414A (en) * | 2020-06-02 | 2020-09-08 | 齐鲁交通发展集团有限公司 | Bearing type pervious concrete-ECC (error correction code) composite precast pile and preparation method thereof |
| CN111636414B (en) * | 2020-06-02 | 2022-05-24 | 山东高速集团有限公司 | Bearing type pervious concrete-ECC (error correction code) composite precast pile and preparation method thereof |
| CN113684842A (en) * | 2021-08-26 | 2021-11-23 | 武汉大学 | High-toughness functionally-graded material slide-resistant pile and construction method |
| CN115262535A (en) * | 2022-01-21 | 2022-11-01 | 郑州航空工业管理学院 | Variable-cross-section soil-squeezing precast tubular pile and construction process |
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