CN107142930A - A kind of embedded stake of high pressure jet grouting base expanding and base expanding and preparation method - Google Patents
A kind of embedded stake of high pressure jet grouting base expanding and base expanding and preparation method Download PDFInfo
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- CN107142930A CN107142930A CN201710267602.7A CN201710267602A CN107142930A CN 107142930 A CN107142930 A CN 107142930A CN 201710267602 A CN201710267602 A CN 201710267602A CN 107142930 A CN107142930 A CN 107142930A
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- pile
- high pressure
- jet grouting
- base expanding
- pressure jet
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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
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
-
- 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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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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 embedded stake of high pressure jet grouting base expanding and base expanding and preparation method.The invention belongs to technical field of buildings, and in particular to a kind of structure and preparation method of improved club-footed pile.The epimere of this pile body is any of cast-in-place concrete pile, steel reinforcement cage cast-in-place concrete pile, prefabricated pile, prefabricated tubular pile and steel-pipe pile, and the hypomere of pile body is more than for diameter in the high pressure jet grouting reinforcing body of epimere, and the lower end insertion hypomere reinforcing body of epimere pile body.Pile body structure of the present invention is simple, construction cost is low, technique is simple, the size and quality of base expanding and base expanding section are easily precisely controlled by design requirement, pile body is well combined with sub-surface, and the intensity for being combined pile body is high, high capacity, suitable for the construction of various pile bodies and various pile-type, a large amount of cement or concrete can be saved.
Description
Technical field
The invention belongs to technical field of buildings, and in particular to a kind of structure and preparation method of improved club-footed pile.
Background technology
With the height more and more higher of urban skyscraper, the bearing capacity to pile foundation is required also with regard to more and more higher, phase
The technological means answered is the size for increasing building stake, and is that cement consumption is more the problem of bring, and construction cost is high.To understand
Certainly this problem, Chinese patent literature 2016201082643（A kind of first bottom-grouting-enlarged stake of rotary digging drilling hole）Propose building use
The epimere that stake is divided into two-part design, i.e. stake is isodiametric stake, and the hypomere of stake is the stake of enlarged diameter, can be greatly reduced
The consumption of cement, while the intensity of guaranteed design stake.The construction method of the club-footed pile of current this kind of pile body includes following several
Kind, with reaming bit reaming, with squeezed device base expanding and base expanding, blow base expanding and base expanding up with dynamite, impact base expanding and base expanding etc. with hammer body.These methods are all first
The epimere stake holes of stake is first got out, in actual construction, due to geological condition change very greatly, can usually run into and cave in existing with cavity
As being also difficult to ensure the Precise spraying size and quality of whole pile body, the situation for expending a large amount of cement still occurring；Adopting
During with reaming bit reaming, the soil layer around drilling can also be disturbed, phenomenon of caving in is difficult to avoid that, equally also be difficult to ensure
The size and pile quality of club-footed pile part, in order to ensure that the building bearing capacity in future can only make the diameter of bottom club-footed pile
More than the size of design, a large amount of cement or concrete are go wasted, difficulty of construction is also increased；Other this club-footed pile is applied
Work only suitable general texture stratum, if more phenomenons of caving in can be run into by running into boulder bed stratum, sandy soil layer stratum, is applied
Work progress is very slow, and perforate, reaming are also more difficult；The construction method of this kind of pile body is determined can only the stake of forming cylinder body, it is difficult to
Apply on the club-footed pile of all kinds of odd-shaped cross sections；Pile body is integrally formed with club-footed pile two parts, therefore the quality of whole pile body
It is difficult to control to.
In recent years building field introduce foreign countries high pressure jet grouting technique, domestic industry also begin to application, it with
The direct impact failure soil body of high pressure jet stream, slurries are replaced with soil with half or total replacement is solidified as induration, and the technology can be compared with
The shape and size of in-situ consolidation body are formed accurately, can effectively prevent ground from swelling and settling, it is usual in building trade
For controlling foundation deformation, the influence to surrounding enviroment is reduced, therefore be commonly in foundation stabilization and sealing, dam concrete crack
Anti-Seepage, basement, underground garage, underpass, concrete crack-leakage water are applied in terms of leakage plugging under water.Even if high pressure
Jet groutinl technology also has for pile, but is also only intended to the continuous piling wall of ultra-deep underground water-stop curtain, and this pile body is not
For load capacity, but for sealing, earth-retaining, the reason for stake of high-pressure rotary jet groutinl is not used in load-bearing is exactly construction cost
Higher, complex process, pile body non-sand concrete cause intensity relatively low.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of embedded stake of high pressure jet grouting base expanding and base expanding, the letter of its structure
Single, construction cost is low, and technique is simple, and the size and quality of base expanding and base expanding section are easily precisely controlled by design requirement, pile body and underground soil
Layer is well combined, and the intensity for being combined pile body is high, high capacity, it is adaptable to the construction of various pile bodies and various pile-type, can save big
Measure cement or concrete.
Realize that above-mentioned purpose of the present invention is adopted the technical scheme that：The epimere of pile body is cast-in-place concrete pile, steel reinforcement cage
Cast-in-place concrete pile, prefabricated pile, prefabricated tubular pile and steel-pipe pile it is any, the hypomere of pile body is more than the high pressure spray of epimere for diameter
Penetrate in grouting and reinforcing body, and the lower end insertion hypomere reinforcing body of epimere pile body.
The diameter of described high pressure jet grouting club-footed pile is more than 1.5 times of the diameter of epimere pile body.
Insert depth of the lower end of described epimere pile body in high pressure jet grouting club-footed pile is the 0.1~10 of its diameter
Times.
The construction method of the embedded stake of high pressure jet grouting base expanding and base expanding of the present invention is：Jet grouting is used first
The club-footed pile depth up to design is bored into, pressure parameter, the spray of jet grouting are calculated according to the data of geological exploration
Bar rotating speed, spray boom lifting speed and cement slurry volume, control spray boom are while the quarrel around cutting cleaning hole hypomere is native, while penetrating water filling
Mud, while evenly gradually lifting spray boom, forms the high pressure jet grouting reinforcing body of design size；Take out high pressure jet grouting work
The spray boom of method, carries out conventional cast-in-place concrete pile, steel reinforcement cage cast-in-place concrete pile, prefabricated pile, prefabricated tubular pile and steel-pipe pile
The drilling operation of any, stake holes is deep into the projected depth in club-footed pile, carries out cast-in-place concrete pile, reinforcing bar cage concrete
Bored concrete pile, prefabricated pile, the operation of the molding construction of any of prefabricated tubular pile and steel-pipe pile, make the lower end one of its epimere pile body
Divide and be embedded into described high pressure jet grouting reinforcing body, eventually form the base-extending deposited club-footed pile assembly of high-pressure injection.
The method have the benefit that：The club-footed pile prepared as a result of high pressure jet grouting, therefore can be compared with
The size and dimension of club-footed pile is formed accurately, the soil layer disturbance around device to hole is reduced, it is ensured that the quality of stake and stake and surrounding
The good combination of soil layer, thus higher pile body bearing strength is also just obtained under rational cement consumption；The pile body of epimere
It is embedded into the club-footed pile of hypomere, the mechanical strength obtained is higher, can be more consistent with design requirement；Adopted first in construction
Larger-diameter reinforcing body is formed with jet grouting, the soil layer disturbance around device to hole can be reduced, eventually formed
The embedded stake assembly of high pressure jet grouting base expanding and base expanding is in addition to good load-carrying properties, and surrounding soil layer also has good to pile body
Side holding bearing capacity, more can guarantee that the quality of whole pile body；Using epimere cast-in-place concrete pile, steel reinforcement cage filling concrete
Stake, prefabricated pile, any pile body of prefabricated tubular pile and steel-pipe pile are combined with the base-extending deposited club-footed pile of high-pressure injection, can be subtracted significantly
The cement or concrete amount of few pile body, and reduce the construction cost in high pressure jet grouting；High pressure jet grouting expands
Bottom stake is suitably combined with the top pile body of various profiled-cross-sections, therefore more adapts to the demand of modern high-rise building.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
In figure：Soil layer 1, epimere pile body 2, high pressure jet grouting club-footed pile 3.
Embodiment
Reference picture 1, the epimere pile body 2 of pile body can use cast-in-place concrete pile, the steel reinforcement cage filling concrete of conventional engineering method
Stake, prefabricated pile, any pile body of prefabricated tubular pile and steel-pipe pile, the hypomere of pile body is high pressure jet grouting club-footed pile 3, epimere stake
The end portion of body 2 is embedded in larger-diameter high pressure jet grouting club-footed pile 3, the diameter of high pressure jet grouting club-footed pile 3
It is more than 1.5 times of the diameter of epimere pile body 2, the insert depth of the lower end of epimere pile body 2 in high pressure jet grouting club-footed pile 3 is
0.1~10 times of the diameter of epimere pile body 2.
The construction method of this pile body is：The club-footed pile depth up to design, root are bored into using jet grouting first
Pressure parameter, spray boom rotating speed, spray boom the lifting speed and cement mortar of jet grouting are calculated according to the data of geological exploration
Amount, controls spray boom while cutting the quarrel soil around cleaning hole hypomere, while cementing is penetrated, while spray boom is evenly gradually lifted,
Form the high pressure jet grouting reinforcing body of design size；The spray boom of high pressure jet grouting engineering method is taken out, conventional concrete is carried out
Bored concrete pile, steel reinforcement cage cast-in-place concrete pile, prefabricated pile, the drilling operation of any of prefabricated tubular pile and steel-pipe pile, stake holes are deep
Enter the projected depth into club-footed pile, carry out cast-in-place concrete pile, steel reinforcement cage cast-in-place concrete pile, prefabricated pile, prefabricated tubular pile and
The operation of the molding construction of any of steel-pipe pile, makes its lower end part be embedded into high pressure jet grouting club-footed pile, finally
Form the base-extending deposited club-footed pile assembly of high-pressure injection.
Claims (4)
1. a kind of embedded stake of high pressure jet grouting base expanding and base expanding, it is characterized in that：The epimere of pile body is cast-in-place concrete pile, steel reinforcement cage is mixed
Any of soil bored concrete pile, prefabricated pile, prefabricated tubular pile and steel-pipe pile is coagulated, the hypomere of pile body is more than the high-pressure injection of epimere for diameter
In grouting and reinforcing body, and the lower end insertion hypomere reinforcing body of epimere pile body.
2. the embedded stake of high pressure jet grouting base expanding and base expanding as described in claim 1, it is characterized in that：High pressure jet grouting club-footed pile
Diameter is more than 1.5 times of the diameter of epimere pile body.
3. the embedded stake of high pressure jet grouting base expanding and base expanding as described in claim 2, it is characterized in that：The lower end of epimere pile body is in high pressure
Insert depth in jet groutinl club-footed pile is 0.1~10 times of its diameter.
4. a kind of preparation method of the embedded stake of high pressure jet grouting base expanding and base expanding described in claim 1, it is characterized in that：Use first
Jet grouting is bored into the club-footed pile depth up to design, and jet grouting is calculated according to the data of geological exploration
Pressure parameter, spray boom rotating speed, spray boom lifting speed and cement slurry volume, control spray boom cuts the quarrel around cleaning hole hypomere on one side
Soil, while penetrating cementing, while evenly gradually lifting spray boom, forms the high pressure jet grouting reinforcing body of design size；Take out
The spray boom of high pressure jet grouting engineering method, carries out conventional cast-in-place concrete pile, steel reinforcement cage cast-in-place concrete pile, prefabricated pile, prefabricated
The drilling operation of any of pile tube and steel-pipe pile, stake holes is deep into the projected depth in club-footed pile, carries out filling concrete
The operation of the molding construction of any of stake, steel reinforcement cage cast-in-place concrete pile, prefabricated pile, prefabricated tubular pile and steel-pipe pile, makes under it
An end part is embedded into described high pressure jet grouting reinforcing body, eventually forms the base-extending deposited club-footed pile combination of high-pressure injection
Body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267602.7A CN107142930A (en) | 2017-04-21 | 2017-04-21 | A kind of embedded stake of high pressure jet grouting base expanding and base expanding and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267602.7A CN107142930A (en) | 2017-04-21 | 2017-04-21 | A kind of embedded stake of high pressure jet grouting base expanding and base expanding and preparation method |
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| Publication Number | Publication Date |
|---|---|
| CN107142930A true CN107142930A (en) | 2017-09-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710267602.7A Pending CN107142930A (en) | 2017-04-21 | 2017-04-21 | A kind of embedded stake of high pressure jet grouting base expanding and base expanding and preparation method |
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| CN (1) | CN107142930A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305187A (en) * | 2020-03-28 | 2020-06-19 | 自然资源部第二海洋研究所 | Stirring pile structure of port silt foundation and construction method thereof |
| TWI835533B (en) * | 2023-01-19 | 2024-03-11 | 林培元 | The root-type column structure of the basement structure and its assembly method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243184A (en) * | 1998-07-27 | 2000-02-02 | 杨丽清 | Construction method of high-pressure rotary-jetting bottom-expanding pile |
-
2017
- 2017-04-21 CN CN201710267602.7A patent/CN107142930A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243184A (en) * | 1998-07-27 | 2000-02-02 | 杨丽清 | Construction method of high-pressure rotary-jetting bottom-expanding pile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305187A (en) * | 2020-03-28 | 2020-06-19 | 自然资源部第二海洋研究所 | Stirring pile structure of port silt foundation and construction method thereof |
| CN111305187B (en) * | 2020-03-28 | 2021-07-06 | 自然资源部第二海洋研究所 | Stirring pile structure of port silt foundation and construction method thereof |
| TWI835533B (en) * | 2023-01-19 | 2024-03-11 | 林培元 | The root-type column structure of the basement structure and its assembly method |
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Application publication date: 20170908 |
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