CN106759301A - A kind of top expansion type cement-soil composite pile - Google Patents
A kind of top expansion type cement-soil composite pile Download PDFInfo
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- CN106759301A CN106759301A CN201611103416.1A CN201611103416A CN106759301A CN 106759301 A CN106759301 A CN 106759301A CN 201611103416 A CN201611103416 A CN 201611103416A CN 106759301 A CN106759301 A CN 106759301A
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- pile
- cement
- soil
- hypomere
- expansion type
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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
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
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- 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)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of top expansion type cement-soil composite pile, including prefabricated concrete pipe pile, centre bore is set in the prefabricated concrete pipe pile, the first cement earth pile of filling in centre bore, second cement earth pile is set outside prefabricated concrete pipe pile, second cement earth pile includes upper and lower two sections, and the stake footpath of the stake footpath more than hypomere of epimere sets the first variable diameters section between epimere and hypomere.With compared with the pile body of the single diameter of the concrete amounts such as length, bearing capacity of pile foundation of the invention is higher, can be on the premise of ensureing to meet design bearing capacity requirement, realize that stake is long shorter, the capability development of pile foundation side resistance simultaneously is higher, particularly suitable for being applied to the geological conditions that upper soil horizon is substantially better than bottom soil layer.
Description
Technical field
The invention belongs to foundation engineering technical field, and in particular to a kind of top expansion type cement-soil composite pile.
Background technology
With the development of building trade, construction scope increasingly increases, and the additional load of ground is increasing, high for part
Layer, high-rise building, subsoil and composite foundation can not meet ground requirement for bearing capacity, it is this under the conditions of, pile foundation is
A kind of base form for generally using.It is preferable for some areas pile foundation upper soil horizon engineering properties, hence it is evident that better than under pile body
During portion's soil layer, typically using increasing, stake is long to be penetrated soft layer or increase stake footpath raising collateral resistance to ensure pile foundation carrying pile foundation
Power, pile-type typically uses cast-in-situ bored pile or static pressure, driven precast pile etc..Bored pile construction operation is：
（1）Plant equipment and material enter job site；
（2）Measure of pile position setting-out；
（3）Embedded casing；
（4）Rig simultaneously pore-forming in place；
（5）Borehole cleaning, lifts steel reinforcement cage；
（6）Conduit, concrete perfusion are installed；
（7）Casing is removed, pile crown is cut；
（8）Pile body is detected.
Although above-mentioned technique has been commonly used, using still suffering from problems with thicker soft layer：
1）The influence of deduction negative friction is needed during pile foundation size design, stake footpath, stake corresponding increase long cause a large amount of wastes；
2）Filling pile construction has higher requirements to filling concrete process, and filling process should ensure that continuously, broken pile otherwise easily occurs
Phenomenon.
The content of the invention
Pile tube is combined it is an object of the invention to provide a kind of top expansion type soil cement.
Based on above-mentioned purpose, the present invention is adopted the following technical scheme that：
In being set in a kind of top expansion type cement-soil composite pile, including prefabricated concrete pipe pile, the prefabricated concrete pipe pile
The first cement earth pile of filling, sets the second cement earth pile, second soil cement in heart hole, centre bore outside prefabricated concrete pipe pile
Stake includes upper and lower two sections, and the stake footpath of the stake footpath more than hypomere of epimere sets the first variable diameters section between epimere and hypomere.
Muscle body is uniformly distributed along the side wall of prefabricated concrete pipe pile, muscle external week, stirrup was set.
The prefabricated concrete pipe pile includes upper and lower two sections, the stake footpath of epimere more than hypomere stake footpath, epimere and hypomere it
Between the second variable diameters section is set, the height of the epimere of the prefabricated concrete pipe pile, the first variable diameters section and hypomere is respectively with the
The epimere of two cement earth piles, the second variable diameters section and hypomere it is highly equal.
The trend of the muscle body is consistent with the trend of prefabricated concrete pipe pile side wall.
First variable diameters section, the second variable diameters section are not more than 12 ° with the angle of the first cement earth pile axis.
The cement earth pile is cement mixing method or soil cement bored concrete pile.
External diameter at least 20mm of the stake footpath of second cement earth pile more than prefabricated concrete pipe pile.
The epimere of the second cement earth pile is located at compared with hard stratum, the hypomere of the first variable diameters section and the second cement earth pile be located at compared with
Soft Soil Layer.
It is described be compared with hard stratum in close-dense state layer of sand, the cohesive soil of hard plastic-hardened condition, the powder of dense state
One or more mixing in soil；Described is cohesive soil that shape is moulded in soft modeling-stream compared with Soft Soil Layer.
Compared with prior art, technique effect of the invention is：
1）With compared with the pile body of the single diameter of the concrete amounts such as length, bearing capacity of pile foundation of the invention is higher, can protect
On the premise of card meets design bearing capacity requirement, realize that stake is long shorter, while the capability development of pile foundation side resistance is higher, be particularly suited for
It is applied to the geological conditions that upper soil horizon is substantially better than bottom soil layer；
2）Stake is overall to be presented the structure type that top stake footpath is big, bottom stake footpath is small, and upper soil horizon collateral resistance can be made effectively to be sent out
Wave；
3）Pile body sets variable diameters section, makes to form taper nature transition between composite foundation pile top and bottom, is conducive to top lotus
Carry transmission downwards, increase the performance of bottom pile bearing capacity, while also saving perfusion pile material；
4）Easy construction, material-saving, the prefabricated concrete pipe pile for using are prefabricated components, can shorten live man-hour, its with it is existing
Pouring concrete bored concrete pile is higher and interior equipped with prestressed steel bar compared to intensity, it is not easy to which cracking destruction phenomenon occurs；Concrete
Without taking out after the insertion of native pile tube, easy construction and effect is good；More concrete and reinforcing bar are saved under identical anti-bending bearing capacity.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the cross section structure schematic diagram of prefabricated concrete pipe pile in the present invention；
Fig. 3 is construction procedure of the invention（1）Structural representation；
Fig. 4 is construction procedure of the invention（2）Structural representation；
Fig. 5 is the construction procedure of invention（3）Structural representation.
Specific embodiment
With reference to specific embodiment, the present invention is described further.
A kind of top expansion type cement-soil composite pile as depicted in figs. 1 and 2, including prefabricated concrete pipe pile 2, the water
Soil stake is cement mixing method or soil cement bored concrete pile.Centre bore is set in the prefabricated concrete pipe pile 2, is filled out in centre bore
The first cement earth pile is filled, prefabricated concrete pipe pile 2 is outer to set the second cement earth pile 1, and second cement earth pile 1 includes upper and lower
Two sections, the stake footpath of the stake footpath more than hypomere 13 of epimere 11, the stake footpath of the epimere 11 of the second cement earth pile 1 is 820mm, the stake of hypomere 13
Footpath is that the first variable diameters section 12 is set between 620mm epimeres 11 and hypomere 13.
The prefabricated concrete pipe pile 2 includes upper and lower two sections, and the stake footpath of the stake footpath more than hypomere 23 of epimere 21 is prefabricated mixed
2 epimere of solidifying soil pile tube 21 diameter 800mm, hypomere 23 diameter 600mm, internal diameter 400mm, second is set between epimere 21 and hypomere 23
The height of variable diameters section 22, the epimere 21, variable diameters of the prefabricated concrete pipe pile 2 section 22 and hypomere 23 respectively with the second cement
The epimere 11 of native stake 1, the first variable diameters section 12 and hypomere 13 it is highly equal.First variable diameters section, the second variable diameters Duan Yu
The angle of one cement earth pile axis is not more than 12 °.The epimere 11 of the second cement earth pile 1 is located at compared with hard stratum, the first variable diameters section
12 and second cement earth pile 1 hypomere 13 be located at compared with Soft Soil Layer.It is described be compared with hard stratum 4 in close-dense state layer of sand（Firmly
The cohesive soil of modeling-hardened condition, the silt of dense state）；The cohesive soil for moulding shape for soft modeling-stream compared with Soft Soil Layer 5.Described
The stake footpath of the epimere 11, the first variable diameters section 12 and hypomere 13 of two cement earth piles 1 is respectively greater than the epimere of prefabricated concrete pipe pile 2
21st, the external diameter at least 20mm of the second variable diameters section 22 and hypomere 23.
Muscle body 3, trend and the side wall of prefabricated concrete pipe pile 2 of muscle body 3 are uniformly distributed along the side wall of prefabricated concrete pipe pile 2
Trend it is consistent, the periphery of muscle body 3 sets stirrup 6.
The cement earth pile is soil cement bored concrete pile, its construction technology, as shown in Fig. 3, Fig. 4 and Fig. 5, including following step
Suddenly：（1）Using rig or manual pore-forming, top aperture is larger, and bottom aperture is smaller；（2）Priming petock soil 7 in hole；（3）Perfusion
Soil cement produce intensity before, be implanted into prefabricated concrete pipe pile；（4）Pile body is detected.Soil cement intensity is no less than 10MPa.
When the cement earth pile is cement mixing method, its construction technology is to comprise the following steps：（1）Top is larger straight
Footpath section stake rig pore-forming, reaches and change behind large diameter pile bottom minor diameter and open drilling tool drilling；（2）Slip casting from the bottom to top is stirred
Mix, drilling tool is opened when stirring to enlarged diameter section pile body is stirred；（3）Before stirring concrete earth produces intensity, it is implanted into prefabricated mixed
Solidifying soil pile body；（4）Pile body is detected.Soil cement intensity is no less than 10MPa.
Claims (9)
1. a kind of top expansion type cement-soil composite pile, it is characterised in that including prefabricated concrete pipe pile, the precast concrete
The first cement earth pile of filling in centre bore, centre bore is set in pile tube, the second cement earth pile, institute are set outside prefabricated concrete pipe pile
Stating the second cement earth pile includes upper and lower two sections, and the stake footpath of the stake footpath more than hypomere of epimere sets first and become between epimere and hypomere
Diameter segment.
2. expansion type cement-soil composite pile in top as claimed in claim 1, it is characterised in that along the side of prefabricated concrete pipe pile
Wall is uniformly distributed muscle body, sets stirrup in muscle external week.
3. expansion type cement-soil composite pile in top as claimed in claim 2, it is characterised in that the prefabricated concrete pipe pile bag
Upper and lower two sections are included, the stake footpath of the stake footpath more than hypomere of epimere sets the second variable diameters section between epimere and hypomere, described prefabricated
The height of the epimere of concrete tubular pile, the first variable diameters section and hypomere epimere, the second variable diameters respectively with the second cement earth pile
Section is highly equal with hypomere.
4. expansion type cement-soil composite pile in top as claimed in claim 3, it is characterised in that the trend of the muscle body with it is prefabricated
The trend of concrete tubular pile side wall is consistent.
5. expansion type cement-soil composite pile in top as claimed in claim 1, it is characterised in that the first variable diameters section, second become
Diameter segment is not more than 12 ° with the angle of the first cement earth pile axis.
6. the top expansion type cement-soil composite pile as described in claim 1-5 is any, it is characterised in that the cement earth pile is
Cement mixing method or soil cement bored concrete pile.
7. expansion type cement-soil composite pile in top as claimed in claim 6, it is characterised in that the stake of second cement earth pile
External diameter at least 20mm of the footpath more than prefabricated concrete pipe pile.
8. expansion type cement-soil composite pile in top as claimed in claim 7, it is characterised in that the upper section of the second cement earth pile
In compared with hard stratum, the first variable diameters section is located at compared with Soft Soil Layer with the hypomere of the second cement earth pile.
9. the top expansion type cement-soil composite pile as described in claim 1-6 is any, it is characterised in that described to be compared with hard stratum
In close-dense state layer of sand, the cohesive soil of hard plastic-hardened condition, the silt of dense state in one or more
Mixing；Described is cohesive soil that shape is moulded in soft modeling-stream compared with Soft Soil Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611103416.1A CN106759301A (en) | 2016-12-05 | 2016-12-05 | A kind of top expansion type cement-soil composite pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611103416.1A CN106759301A (en) | 2016-12-05 | 2016-12-05 | A kind of top expansion type cement-soil composite pile |
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| Publication Number | Publication Date |
|---|---|
| CN106759301A true CN106759301A (en) | 2017-05-31 |
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ID=58883950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611103416.1A Pending CN106759301A (en) | 2016-12-05 | 2016-12-05 | A kind of top expansion type cement-soil composite pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984004120A1 (en) * | 1983-04-14 | 1984-10-25 | Duna Tisza Koezi Allami Epitoe | Process and equipment for manufacturing in-situ concrete monolithic piles with non-uniform section |
| JPH0960028A (en) * | 1995-08-25 | 1997-03-04 | Shimizu Corp | Method for increasing strength of existing steel pipe pile |
| CN1167860A (en) * | 1997-05-31 | 1997-12-17 | 段克亚 | Cement and soil composite pile, its making method and special equipment |
| CN2353795Y (en) * | 1999-01-13 | 1999-12-15 | 中国建筑科学研究院地基基础研究所 | Prefabricated-tube composite pile of cement and soil |
| CN2517781Y (en) * | 2002-01-29 | 2002-10-23 | 何庆林 | Concrete pile |
| CN1644804A (en) * | 2005-02-24 | 2005-07-27 | 王继忠 | Construction of concrete piles |
| KR20050093721A (en) * | 2005-05-16 | 2005-09-23 | 이엑스티 유한회사 | Pile with an extended head |
| CN101858079A (en) * | 2010-06-02 | 2010-10-13 | 山东省建筑科学研究院 | Core filling tubular pile cement composite foundation pile and construction method |
| CN102251520A (en) * | 2011-05-27 | 2011-11-23 | 岳建伟 | Novel cement soil composite mixing pile and pile formation method thereof |
| CN206495202U (en) * | 2016-12-05 | 2017-09-15 | 周同和 | A kind of top expansion type cement-soil composite pile |
-
2016
- 2016-12-05 CN CN201611103416.1A patent/CN106759301A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984004120A1 (en) * | 1983-04-14 | 1984-10-25 | Duna Tisza Koezi Allami Epitoe | Process and equipment for manufacturing in-situ concrete monolithic piles with non-uniform section |
| JPH0960028A (en) * | 1995-08-25 | 1997-03-04 | Shimizu Corp | Method for increasing strength of existing steel pipe pile |
| CN1167860A (en) * | 1997-05-31 | 1997-12-17 | 段克亚 | Cement and soil composite pile, its making method and special equipment |
| CN2353795Y (en) * | 1999-01-13 | 1999-12-15 | 中国建筑科学研究院地基基础研究所 | Prefabricated-tube composite pile of cement and soil |
| CN2517781Y (en) * | 2002-01-29 | 2002-10-23 | 何庆林 | Concrete pile |
| CN1644804A (en) * | 2005-02-24 | 2005-07-27 | 王继忠 | Construction of concrete piles |
| KR20050093721A (en) * | 2005-05-16 | 2005-09-23 | 이엑스티 유한회사 | Pile with an extended head |
| CN101858079A (en) * | 2010-06-02 | 2010-10-13 | 山东省建筑科学研究院 | Core filling tubular pile cement composite foundation pile and construction method |
| CN102251520A (en) * | 2011-05-27 | 2011-11-23 | 岳建伟 | Novel cement soil composite mixing pile and pile formation method thereof |
| CN206495202U (en) * | 2016-12-05 | 2017-09-15 | 周同和 | A kind of top expansion type cement-soil composite pile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |