CN108487240A - Churning method is molded lattice foundation - Google Patents
Churning method is molded lattice foundation Download PDFInfo
- Publication number
- CN108487240A CN108487240A CN201810368128.1A CN201810368128A CN108487240A CN 108487240 A CN108487240 A CN 108487240A CN 201810368128 A CN201810368128 A CN 201810368128A CN 108487240 A CN108487240 A CN 108487240A
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- CN
- China
- Prior art keywords
- churning
- obturator
- lattice
- foundation
- breadth
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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
- E02D5/34—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
-
- 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
- E02D5/18—Bulkheads or similar walls made solely of concrete 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the foundation engineering technical fields of building industry, are related to a kind of churning method molding lattice foundation, are a kind of weak subsoil reinforcing engineering technologies.Mainly by churning, diaphragm wall, upper obturator and lower obturator form closing lattice to churning method molding lattice foundation in length and breadth.Diaphragm wall is overlapped successively by rotary churning pile and is formed lattice space in length and breadth for churning, and undisturbed soil is closed in lattice space, and the centre-to-centre spacing of two neighboring rotary churning pile is 0.7~0.8 times of rotary churning pile diameter；Upper obturator and lower obturator are abound with overlap joint by rotary churning pile and are formed.The invention has the advantages that being formed in the underground space, closing is whole, and basic overall stiffness is big, improves basic bearing capacity.The soil property and engineering object that the present invention is applicable in are extensive, save material and resource, mitigate construction pollution, easy construction.
Description
Technical field
The invention belongs to the foundation engineering technical fields of building industry, are related to a kind of churning method molding lattice foundation, are one
The weak subsoil reinforcing engineering technology of kind.
Background technology
Churning is the abbreviation of high-pressure rotary jet groutinl, and high-pressure rotary jet groutinl method is to utilize drilling machine by high pressure water mud
(or other slurries) inject soil layer and Stirring, and slurries are mixed with the soil body, condense into the construction method of reinforcing body.
Jet grouting (Jet Grout) originates from the Japan in generation nineteen sixty, by years development, it has also become common
Construction method, wherein the most universal with churning method.This method has foundation stabilization, prevents sand liquefaction, sealing antiseepage etc.
Function.
Churning pile composite foundation has been included in《Building foundation treatment technical specification》, Bearing Capacity of Composite Foundation is by rotary churning pile pile body
It is provided jointly with inter-pile soil.Also it can disregard the bearing capacity of inter-pile soil, then churning pile bearing capacity and normal concrete stake computational methods
It is identical.
The present invention uses different reinforcing body forms, forms that intensity is higher, the lower lattice foundation of expense, to solve flabbily
Base reinforces problem.
Invention content
Above-mentioned flabbiness ground strengthened to solve the problems, such as, the present invention provides a kind of churning method molding lattice foundation.
Technical scheme of the present invention：
A kind of churning method is molded lattice foundation, mainly by churning 4 groups of diaphragm wall 3, upper obturator 2 and lower obturator in length and breadth
At；The upper obturator 2 is located at churning, and 3 top of diaphragm wall, the lower obturator 4 are located at churning diaphragm wall 3 in length and breadth in length and breadth
Lower section, three form closing lattice；
Diaphragm wall 3 is to be overlapped by multiple rotary churning piles 7 and formed lattice space successively in length and breadth for the churning, 6 envelope of undisturbed soil
It closes in lattice space, the stability for reinforcing the lattice foundation；The rotary churning pile 7, the center of two neighboring rotary churning pile 7
Away from for 0.7~0.8 times of rotary churning pile diameter；
The upper obturator 2 and lower obturator 4 is abound with overlap joint by multiple rotary churning piles 7 and is formed；
The top of the upper obturator 2 is equipped with mattress layer 1 or rubble-mound foundation, and the lower obturator 4 is located at supporting course 5
On.
The design strength of the rotary churning pile 7 is 90 days age strengths.
The beneficial effects of the invention are as follows：
One, closing entirety is formed in the underground space, basic overall stiffness is big, improves basic bearing capacity.So that flabbily
It is larger and require differential settlement stringent buildings or structures that load can be built on base, improve the spirit of buildings or structures addressing
Activity.
Two, it is wide in range to be applicable in soil property range, to mud, muck soil, soft plasticviscosity soil, silt, loess, sand, manually fills out
The consolidation process of soil and foundation of gravelly soil works well.
Three, it is extensive to be applicable in engineering object, can be used for improving foundation bearing capacity, sealing antiseepage, solidification drift sand, prevent from washing away
Deng.
Four, the construction material based on undisturbed soil is made full use of, material and resource can be saved.
Five, relative to dredging and other a variety of based process modes, rotary-spraying construction environmental pollution are smaller.
Six, construction technology is simple, and construction equipment is small, flexibly and easily, the construction period can be effectively reduced, so as to reduce work
Journey cost.
The present invention can safe efficient, frugally solve the problems, such as soft layer strengthening of foundation.The present invention is suitable for all kinds of build
(structure) builds object basis, sealing antiseepage, solidification drift sand, the engineering purposes such as prevents from washing away.
Description of the drawings
Fig. 1 is the elevation of the present invention.
Fig. 2 is the A-A sectional views of churning of the present invention diaphragm wall in length and breadth.
Fig. 3 is that rotary churning pile of the present invention overlaps schematic diagram.
In figure：1 mattress layer；Obturator on 2；3 churnings diaphragm wall in length and breadth；4 times obturators；5 supporting courses；6 undisturbed soils；7 rotations
Spray stake.
Specific implementation mode
Below in conjunction with attached drawing and technical solution, the specific implementation mode that further illustrates the present invention.
A kind of churning method molding lattice foundation, by churning, diaphragm wall 3, upper obturator 2 and lower obturator 4 form in length and breadth；On
Obturator 2 is located at churning 3 top of diaphragm wall in length and breadth, and lower obturator 4 is located at churning, and 3 lower section of diaphragm wall, three form closing in length and breadth
Lattice；2 top of upper obturator is equipped with mattress layer 1 or rubble-mound foundation, and lower obturator 4 is located on supporting course 5.
Diaphragm wall 3 is to be overlapped by multiple rotary churning piles 7 and formed lattice space successively in length and breadth for churning, and undisturbed soil 6 is closed in lattice
In conformational space, the stability for reinforcing the lattice foundation；The centre-to-centre spacing of two neighboring rotary churning pile 7 is 0.7~0.8 times of rotary churning pile
Diameter.
Upper obturator 2 and lower obturator 4 are abound with overlap joint by multiple rotary churning piles 7 and are formed.
The intensity of rotary churning pile 7 is determined by design, and is verified by Site Detection.Design strength is generally strong using 90 day age
Degree, can also select other age strengths according to actual conditions.
Claims (2)
1. a kind of churning method is molded lattice foundation, which is characterized in that the lattice foundation mainly by churning in length and breadth diaphragm wall (3), on
Obturator (2) and lower obturator (4) composition；The upper obturator (2) is located at churning diaphragm wall (3) top in length and breadth, described
Lower obturator (4) is located at churning diaphragm wall (3) lower section in length and breadth, and three forms closing lattice；
Diaphragm wall (3) is to be overlapped by multiple rotary churning piles (7) and formed lattice space successively in length and breadth for the churning, undisturbed soil (6)
It is closed in lattice space, the stability for reinforcing the lattice foundation；The rotary churning pile (7), two neighboring rotary churning pile (7)
Centre-to-centre spacing be 0.7~0.8 times of rotary churning pile diameter；
The upper obturator (2) and lower obturator (4) is abound with overlap joint by multiple rotary churning piles (7) and is formed；
The top of the upper obturator (2) is equipped with mattress layer (1) or rubble-mound foundation, and the lower obturator (4) is located at holding force
On layer (5).
2. a kind of churning method according to claim 1 is molded lattice foundation, which is characterized in that the rotary churning pile (7)
Design strength is 90 days age strengths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368128.1A CN108487240A (en) | 2018-04-23 | 2018-04-23 | Churning method is molded lattice foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368128.1A CN108487240A (en) | 2018-04-23 | 2018-04-23 | Churning method is molded lattice foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108487240A true CN108487240A (en) | 2018-09-04 |
Family
ID=63312944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810368128.1A Pending CN108487240A (en) | 2018-04-23 | 2018-04-23 | Churning method is molded lattice foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108487240A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519880A (en) * | 2009-03-02 | 2009-09-02 | 浙江大学 | Method of using rotational multiaxial borehole pouring concrete occluding pile wall for enclosing deep foundation pit and slope protection project |
| CN101775810A (en) * | 2010-02-04 | 2010-07-14 | 天津大学 | Underground water control construction method in foundation pit dewatering project |
| CN102912805A (en) * | 2012-11-22 | 2013-02-06 | 河海大学 | Cement mixing pile structure for side slope solidification |
| CN103758113A (en) * | 2014-01-03 | 2014-04-30 | 中化二建集团有限公司 | Liquefaction resistance foundation stabilization method by grate hooping |
| CN103993603A (en) * | 2014-05-30 | 2014-08-20 | 中冶沈勘工程技术有限公司 | Top-down construction method for anchor rod and rotary jet grouting back cover deep foundation pit without precipitation operation |
| CN104674827A (en) * | 2015-03-27 | 2015-06-03 | 济南轨道交通集团有限公司 | Novel totally-closed water stopping system for water-rich stratum foundation pit and construction method of novel totally-closed water stopping system |
| JP5778968B2 (en) * | 2011-04-11 | 2015-09-16 | 株式会社竹中工務店 | Improved fiber mixture |
-
2018
- 2018-04-23 CN CN201810368128.1A patent/CN108487240A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519880A (en) * | 2009-03-02 | 2009-09-02 | 浙江大学 | Method of using rotational multiaxial borehole pouring concrete occluding pile wall for enclosing deep foundation pit and slope protection project |
| CN101775810A (en) * | 2010-02-04 | 2010-07-14 | 天津大学 | Underground water control construction method in foundation pit dewatering project |
| JP5778968B2 (en) * | 2011-04-11 | 2015-09-16 | 株式会社竹中工務店 | Improved fiber mixture |
| CN102912805A (en) * | 2012-11-22 | 2013-02-06 | 河海大学 | Cement mixing pile structure for side slope solidification |
| CN103758113A (en) * | 2014-01-03 | 2014-04-30 | 中化二建集团有限公司 | Liquefaction resistance foundation stabilization method by grate hooping |
| CN103993603A (en) * | 2014-05-30 | 2014-08-20 | 中冶沈勘工程技术有限公司 | Top-down construction method for anchor rod and rotary jet grouting back cover deep foundation pit without precipitation operation |
| CN104674827A (en) * | 2015-03-27 | 2015-06-03 | 济南轨道交通集团有限公司 | Novel totally-closed water stopping system for water-rich stratum foundation pit and construction method of novel totally-closed water stopping system |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180904 |
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| WD01 | Invention patent application deemed withdrawn after publication |