CN208563314U - A kind of high intensity can drain prefabricating composite pile - Google Patents
A kind of high intensity can drain prefabricating composite pile Download PDFInfo
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- CN208563314U CN208563314U CN201820558777.3U CN201820558777U CN208563314U CN 208563314 U CN208563314 U CN 208563314U CN 201820558777 U CN201820558777 U CN 201820558777U CN 208563314 U CN208563314 U CN 208563314U
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- pile
- high intensity
- composite pile
- drain
- concrete
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Abstract
The utility model 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 layer pervious concrete cylinder and outer layer pipe；Permeable hole is provided 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 the high intensity of composite pile, and the aperture of outer layer pipe wall surface and the setting of middle layer pervious concrete cylinder then provide drainage channel for foundation soil pore pressure dissipation and consolidation.The composite pile of the utility model has the multiple action mechanism of high-intensitive vertical enhancing, discharging consolidation inter-pile soil, and pile body is simple for structure, easy to industrialized production.
Description
Technical field
The utility model relates to geotechnical engineering foundation stabilization fields, and in particular to a kind of high intensity can drain prefabricated compound
Stake is particularly suitable for the pile foundation engineering and basement process of deep soft soil foundation reinforcing.
Background technique
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
Inexorable trend as engineering construction field development.In recent years, precast concrete pile is because its production technology is advanced, industrialization degree
The technologies, economic advantages such as height, quality stabilization, short construction period, 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 biggish stiffness and strength, 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 be shortened the construction period, save the cost.But
It is that pile shaft material mostly uses high grade (not less than C60) concrete, and material water penetration itself is lower, and mostly uses in construction 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
Generate the diseases such as deviation, " floating stake " or even broken pile, though in terms of carry out arrangement and method for construction optimization, be 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 skeleton-pore structure porous concrete material of formation, being used as pile shaft material can form
Water coagulation soil stake.Permeable concrete pile has good water penetration, can provide for surrounding soil due to its own design feature
Vertical drainage channel accelerates the foundation soil consolidation draining time, can greatly reduce 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.
Utility model content
The purpose of this utility model is to provide a kind of high intensity can drain prefabricating composite pile, to solve to mix in the prior art
The intensity of solidifying soil stake is insufficient, foundation soil pore pressure dissipation and consolidation draining difference problem.
The technical solution that a kind of high intensity of the utility model can drain prefabricating composite pile is: a kind of high intensity can drain pre-
Composite pile processed including the radial internal layer prestressed-concrete pile body set gradually from inside to outside, is wrapped in internal layer prestressed concrete
Middle layer pervious concrete cylinder on native pile body outer wall and the outer layer pipe being wrapped on the pervious concrete drum outer wall of middle layer, outer layer steel
Permeable hole is provided in the steel pipe walls of pipe.
The pervious concrete for forming middle layer 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 hole configurations or staggered hole configurations being set on outer layer pipe.
Each hole diameter of hole configurations 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 layer 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 middle layer pervious concrete cylinder with a thickness of 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 utility model are: the technical characterstic of the utility model be by internal layer prestressed-concrete pile, in
Layer pervious concrete cylinder and outer layer pipe collectively constitute composite pile, and the high intensity of internal layer prestressed-concrete pile is that composite pile is high-strength
The basis of degree, middle layer pervious concrete cylinder provide good drainage channel for composite pile, and the radial constraint effect of outer layer pipe rises
To the effect of further composite pile intensity, while the permeable hole that its wall surface opens up also functions to holding pervious concrete cylinder high water-permeability
Effect.The high intensity of internal layer prestressed concrete and the radial constraint effect of outer layer pipe ensure the high intensity of composite pile,
The aperture of outer layer pipe wall surface and the setting of middle layer pervious concrete cylinder then provide drainage channel for foundation soil pore pressure dissipation and consolidation.
Therefore, by the innovation of pile body structure, the prefabricating composite pile that the utility model is proposed not only has traditional prestressed concrete
The mechanics feature of stake high intensity, high rigidity, and the powerful lasting draining having both conducive to foundation soil pore pressure dissipation and consolidation draining
Ability can significantly improve the consolidation efficiency of foundation soil and continue to and strengthen the ability of later period foundation soil consolidation effect；Meanwhile
Its technical characterstic is conducive to large-scale industrial production, meets energy-saving and environment-friendly prefabricated construction trend, can be widely applied to build
It builds, highway, railway, water conservancy, harbour, the pile foundation engineering of the engineerings such as municipal works and foundation stabilization.
Detailed description of the invention
Fig. 1 is the diagrammatic cross-section that a kind of high intensity of the utility model 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 layer pervious concrete cylinders；3 outer layer pipes.
Specific embodiment
The utility model is further described with embodiment with reference to the accompanying drawing.
A kind of high intensity of the utility model can drain prefabricating composite pile, as depicted in figs. 1 and 2, from inside to outside radially
Points three layers, respectively internal layer prestressed-concrete pile body 1, middle layer pervious concrete cylinder 2 and outer layer pipe 3 from inside to outside.Internal layer
The strength grade of concrete of prestressed-concrete pile body 1 must not be lower than C50.Middle layer pervious concrete cylinder 2 is wrapped in above-mentioned internal layer
1 radial outer wall of prestressed-concrete pile body, with a thickness of 150 ~ 200mm.Formed middle layer pervious concrete cylinder pervious concrete by
Cement, coarse aggregate, water, outer-penetrating agent form, wherein cement: coarse aggregate: water: outer-penetrating agent=1:4 ~ 5:0.3 ~ 0.35:0.02 ~ 0.03
(weight ratio), coarse aggregate grain size are 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 layer 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 hole configurations being set on outer layer pipe
Or staggered hole configurations, each hole diameter of hole configurations 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 utility model can drain the prefabricated length of single-unit of prefabricating composite pile
It spends and is generally 8 ~ 12m, it, can be according to the prefabricated corresponding compound pile length of single-unit of requirement of engineering in other embodiments.When site operation, root
Jointing is carried out using manual electric arc welding or carbon dioxide gas arc welding according to designing pile length, the welding number of plies is no less than three layers.
Prefabricating 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 utility model, the high intensity of internal layer prestressed concrete and the radial direction of outer layer pipe
Effect of restraint ensures the high intensity of composite pile, and the aperture of outer layer pipe wall surface and the setting of middle layer pervious concrete cylinder are then ground
Native pore pressure dissipation and consolidation provide drainage channel, so that prefabricating composite pile has high-intensitive vertical enhancing, discharging consolidation inter-pile soil
Multiple action mechanism, and pile body is simple for structure, easy to industrialized production.
The utility model caused excess pore water pressure adverse effect when avoiding traditional prefabricated pile pile sinking accelerates ground
Native discharging consolidation and the shortcomings that overcoming pervious concrete limited strength, it can not only ensure high intensity, the Gao Gang of compound pile body
Degree, 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 work
Factory's metaplasia produces, and is convenient for prefabricated assembled construction.
Claims (7)
1. a kind of high intensity can drain prefabricating composite pile, it is characterised in that: pre- including the radial internal layer set gradually from inside to outside
Prestressed concrete pile body, the middle layer pervious concrete cylinder being wrapped on the external wall of internal layer prestressed-concrete pile and it is wrapped in middle layer
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: the permeable hole is to be set to
Block form hole configurations or staggered hole configurations on outer layer pipe.
3. high intensity according to claim 1 can drain prefabricating composite pile, it is characterised in that: form middle layer 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.
4. 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.
5. high intensity according to claim 1 can drain prefabricating composite pile, it is characterised in that: the middle layer pervious concrete
Cylinder with a thickness of 150 ~ 200mm.
6. 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.
7. high intensity according to claim 1 to 6 can drain prefabricating composite pile, it is characterised in that: this is prefabricated multiple
The lower end for closing stake is equipped with the pile shoe structure of cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820558777.3U CN208563314U (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 |
|---|---|---|---|
| CN201820558777.3U CN208563314U (en) | 2018-04-19 | 2018-04-19 | A kind of high intensity can drain prefabricating composite pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208563314U true CN208563314U (en) | 2019-03-01 |
Family
ID=65481533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820558777.3U Expired - Fee Related CN208563314U (en) | 2018-04-19 | 2018-04-19 | A kind of high intensity can drain prefabricating composite pile |
Country Status (1)
| Country | Link |
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| CN (1) | CN208563314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411909A (en) * | 2018-04-19 | 2018-08-17 | 北京泰斯特工程检测有限公司 | A kind of high intensity can drain prefabricating composite pile |
-
2018
- 2018-04-19 CN CN201820558777.3U patent/CN208563314U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411909A (en) * | 2018-04-19 | 2018-08-17 | 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190301 Termination date: 20200419 |