CN105756078B - One kind extends out lamination type and draws digging spread foundation and its construction method - Google Patents
One kind extends out lamination type and draws digging spread foundation and its construction method Download PDFInfo
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- CN105756078B CN105756078B CN201610284990.5A CN201610284990A CN105756078B CN 105756078 B CN105756078 B CN 105756078B CN 201610284990 A CN201610284990 A CN 201610284990A CN 105756078 B CN105756078 B CN 105756078B
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- screed
- column
- expansion head
- brick layer
- brick
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- 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
-
- 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
Abstract
Lamination type is extended out the present invention relates to one kind draw and dig spread foundation and its construction method, solve to draw compared with prior art and dig spread foundation and easily occur the defects of crater wall is caved in the construction process.The expansion head of the present invention includes upper expansion head and lower expansion head, and upper expansion is diagonally-installed on lower expansion head；The lower outer wall for expanding head is followed successively by lower screed and lower brick layer from outside to inside, the upper outer wall for expanding head is followed successively by screed and upper brick layer from outside to inside, Rock And Soil on the outside of the upper following screed of screed is puted forth effort to support as its oblique downslide, and the joining place of the upper following screed of brick layer and lower brick layer is puted forth effort to support as its oblique downslide.This invention ensures that drawing the safety and stability for digging spread foundation construction, the use scope drawn and dig spread foundation is expanded, ensure that the success rate of pore-forming.
Description
Technical field
The present invention relates to transmission line tower foundation technical field, specifically one kind, which extends out lamination type and draws, digs base expanding and base expanding base
Plinth and its construction method.
Background technology
The stress of transmission line tower foundation has its industry characteristic, and pole and tower foundation is in the process of running not only by lower pressure
Effect, also acted on by two kinds of power of uplift force and lateral moment of flexure.In the design work of pole and tower foundation, reasonable design is needed
Base form, certain withdrawal resistance is provided while bearing capacity is met.As shown in Figure 1, it is wherein to draw digging spread foundation
A kind of form.
It draws digging spread foundation to be widely used in High Voltage Transmission Line Engineering, construction method is using mechanically or manually in day
So directly dug in soil（It bores）Into required foundation pit, framework of steel reinforcement and concrete are directly poured in being formed in foundation pit.The basic type
Formula makes undisturbed soil form vertical constraint to basis, so as to provide basis required withdrawal resistance by expanding bottom part aperture diameter.This base
The process that plinth eliminates template and backfill saves material, accelerates engineering construction progress, reduces cost.However the base
Plinth is in actual application, and the shortcomings that crater wall is easily caved in when drawing digging there is enlarged footing part, the principle that crater wall is caved in is such as
Shown in Fig. 2.It draws and digs spread foundation since its expanded head part point is relatively large in diameter, the crater wall inclination angle that reaming is formed is larger.When crater wall rock
When soil body cohesive strength is larger, it is ensured that its base expanding and base expanding effect；And when crater wall soil body cohesive strength is smaller or in seasonal rainwater
When causing crater wall soaked under effect, crater wall will occur and cave in.Crater wall is caved in light then so that basis can not use, and causes engineering wave
Take；It is heavy then injure the worker in bottom hole operation by a crashing object, engineering safety accident occurs, directly affect the foundation pattern applies model
It encloses.
At present, draw dig spread foundation straight hole part generally using cement concrete carry out retaining wall, and base expanding and base expanding partially due to
Without ripe construction technology, and without retaining wall.This construction method significantly limits the use scope drawn and dig spread foundation,
, using the tower position for digging spread foundation is drawn, itself the quality accidents that crater wall is caved in easily occur again for basis simultaneously.
Therefore, how to design a kind of brick retaining wall for being exclusively used in electric power line pole tower draw dig spread foundation have become urgent need
The technical issues of solution.
Invention content
The purpose of the present invention is to solve draw to dig spread foundation and easily occur crater wall in the construction process and collapse in the prior art
The defects of collapsing provides one kind and extends out lamination type and draw and dig spread foundation and its construction method to solve the above problems.
To achieve these goals, technical scheme is as follows：
One kind extends out lamination type and draws digging spread foundation, including column and expands head, and column, which is mounted on, to be expanded above head, and steel reinforcement cage is inserted
It is fixed in column and expansion head and by concreting,
The expansion head includes upper expansion head and lower expansion head, and upper expansion is diagonally-installed on lower expansion head；Outside the lower expansion head
Wall is followed successively by lower screed and lower brick layer from outside to inside, and the upper outer wall for expanding head is followed successively by screed and upper brick from outside to inside
Layer, the Rock And Soil on the outside of the upper following screed of screed are puted forth effort to support as its oblique downslide, the upper following screed of brick layer and
The joining place of lower brick layer is puted forth effort to support as its oblique downslide.
The column is frustum cone structure.
The lower screed is cement mortar, and the brick body of the lower brick layer is clay brick.
The column includes bottom column and middle part column, and middle part column is diagonally-installed in bottom column；The bottom
The outer wall of portion's column is followed successively by screed A and brick layer A from outside to inside, and the outer wall of the middle part column is followed successively by mortar from outside to inside
Layer B and brick layer B, screed A more thans screed and the joining place of Rock And Soil on the outside of upper screed are puted forth effort as its oblique downslide
Support, brick layer A more thans screed and the joining place of upper brick layer are puted forth effort to support as its oblique downslide, and screed B is with screed A
The Rock And Soil in outside is puted forth effort to support as its oblique downslide, and brick layer B is oblique as it using the joining place of screed A and brick layer A
Put forth effort to support to downslide.
The column further includes top column, and top column is diagonally-installed on the column of middle part；The top column
Outer wall is followed successively by screed C and brick layer C from outside to inside, and screed C is using the Rock And Soil on the outside of screed B as its oblique downslide
Put forth effort to support, brick layer C puts forth effort to support using the joining place of screed B and brick layer B as its oblique downslide.
The longitudinal length of the brick layer A is 115mm-345mm.
A kind of lamination type that extends out draws the construction method for digging spread foundation, includes the following steps：
The construction of column portion carries out the construction of top column, middle part column and bottom column successively；
The construction of expanded head part point carries out expanding head and the lower construction for expanding head successively；
The upper construction procedure for expanding head includes：Downward oblique reaming is deep-cut on the basis of bottom column；In upper expansion head upper edge
Its sideline first reuses that clay brick blended cement mortar is secondary to build retaining wall by laying bricks or stones using cement mortar retaining wall, ensure clay brick mutually it
Between formed arching after, then carry out it is lower expand head construction；
The lower construction procedure for expanding head includes：Oblique reaming downwards is deep-cut on the basis of upper expansion head；Lower expansion head upper edge its
Sideline first reuses that clay brick blended cement mortar is secondary to build retaining wall by laying bricks or stones using cement mortar retaining wall, the lower retaining wall clay brick for expanding head
It should be fitted closely with the lower bottom hole for expanding head；Treat that the lower retaining wall clay for expanding head and cement mortar brick adhesion strength reach design strength institute
After the curing age needed, steel reinforcement cage is put into, carries out pouring for concrete, after meeting concrete maintaining age, basis input makes
With.
The construction method of the top column includes the following steps：
On the basis of tower leg Center stake position is according to design stake diameter extend out and oblique draw digging operation；
After drawing digging depth and reaching 0.5m-1.5m, on top, column is first reused viscous along its sideline using cement mortar retaining wall
Cob brick blended cement mortar is secondary to build retaining wall by laying bricks or stones, is built by laying bricks or stones always to the aperture of top column；
After the curing age that the adhesion strength between the clay brick in top column sideline reaches needed for design strength, still further below
It is oblique to draw digging reaming, carry out the construction of middle part column.
Advantageous effect
One kind of the present invention extends out lamination type and draws digging spread foundation and its construction method, ensure that draw compared with prior art
The safety and stability of spread foundation construction is dug, the use scope drawn and dig spread foundation is expanded, ensure that the success of pore-forming
Rate reduces quality accidents, reduces project cost.
Description of the drawings
Fig. 1 is the structure diagram of the prior art drawn and dig spread foundation；
Fig. 2 is to draw the structure diagram dug when spread foundation crater wall is caved in the prior art；
Fig. 3 is the structure diagram of the present invention；
Fig. 4 is the structure diagram of middle and upper part column of the present invention；
Fig. 5 is the structure diagram of middle and upper part column of the present invention and middle part column portion；
Fig. 6 is the structure diagram of central post of the present invention and expanded head part point；
Fig. 7 is that the present invention places the structure diagram after steel reinforcement cage；
Wherein, 1- columns, 2- expansions head, 3- Rock And Soils, 4- steel reinforcement cages, 5- concrete, 11- bottom columns, 12- middle parts are vertical
Column, 13- tops column, 111- screed A, 112- brick layer A, 121- screed B, 122- brick layer B, 131- screed C, 132- bricks
Brick layer under screed, 222- under the upper screeds of layer C, 211-, the upper brick layer of 212-, 221-.
Specific embodiment
The effect of to make to structure feature of the invention and being reached, has a better understanding and awareness, to preferable
Embodiment and attached drawing cooperation detailed description, are described as follows：
As shown in figure 3, one kind of the present invention, which extends out lamination type, draws digging spread foundation, including column 1 and expand head 2, stand
Column 1 is mounted in the way of the prior art expands 2 top of head.Steel reinforcement cage 4 is inserted in column 1 and expands in head 2 and poured by concrete 5
It is fixed, so as to basis of formation.
As shown in Figure 3 and Figure 6, expand head 2 and include upper expansion head 21 and lower expansion head 22, upper expansion head 21 is diagonally-installed in lower expansion head 22
On, upper expansion head 21 is in the formula that extends out on the basis of lower expansion head 22, and upper expansion head 21 is pressed in lower 22 top of expansion head, is formed and is laminated knot
Structure.The lower lowest level for expanding head 22 and being located at entire basis, conventional foundation side of the prior art may be used in the lower lower part for expanding head 22
Formula can also be directly installed on Rock And Soil 3.The lower outer wall for expanding head 22 is followed successively by lower screed 221 and lower brick layer from outside to inside
222, lower screed 221 can be cement mortar, and the brick body of lower brick layer 222 can be clay brick.It is lower sand i.e. close to Rock And Soil 3
Pulp layer 221 carries out retaining wall for Rock And Soil 3 using lower screed 221, reuses lower brick layer 222 and lower screed 221 is protected
Wall.Equally, the upper outer wall for expanding head 21 is followed successively by screed 211 and upper brick layer 212 from outside to inside.Due to upper expansion 21 oblique peace of head
Mounted in lower expansion head 22, for the two to extend out lamination type, the Rock And Soil 3 in upper screed screed 221 below 211 outside is oblique as its
That glides puts forth effort to support, i.e., the lower part of upper screed 211 is located on the Rock And Soil 3 in lower 221 outside of screed, and due to upper sand
Pulp layer 211 is oblique structure, therefore the lower part of upper screed 211 is against on the Rock And Soil 3 in lower 221 outside of screed.Similarly, on
Brick layer screed 221 below 212 and the joining place of lower brick layer 222 are puted forth effort to support as its oblique downslide, under upper brick layer 212
Portion is against lower screed 221 and the joining place of lower brick layer 222.By upper screed 211, upper brick layer 212 and lower screed 221,
The levels design of lower brick layer 222 realizes the lamination for expanding head 21 on lower expansion head 22, and due under upper expansion head 21 dislocation
It is pressed on lower expansion head 22, also forms extending out in structure.
As shown in Fig. 3, Fig. 4 and Fig. 5, column 1 be frustum cone structure, i.e., up-narrow and down-wide structure.Column 1 includes bottom column 11
With middle part column 12, middle part column 12 is diagonally-installed in bottom column 11, and bottom column 11 and middle part column 12 are also formed outside
Expand lamination type.Similarly, the outer wall of bottom column 11 is followed successively by screed A111 and brick layer A112 from outside to inside, middle part column 12
Outer wall is followed successively by screed B121 and brick layer B122 from outside to inside.Expand head 21 as lower support in this more than 11 bottom column, sand
Pulp layer A111 more thans screed 211 and the joining place of upper 211 outside Rock And Soil 3 of screed are puted forth effort to prop up as its oblique downslide
Support, brick layer A112 more thans screed 211 and the joining place of upper brick layer 212 are puted forth effort to support as its oblique downslide, therefore, bottom
Column 11 forms extending out in structure based on upper expansion head 21 and is laminated.Similarly, screed B121 with screed A111 on the outside of
Rock And Soil 3 is puted forth effort to support as its oblique downslide, brick layer B122 using the joining place of screed A111 and brick layer A112 as
Its oblique downslide is puted forth effort to support, and therefore, middle part column 12 forms extending out in structure based on bottom column 11 and is laminated.
This, the longitudinal length of brick layer A112 can be 115mm-345mm, i.e. brick layer A112 can be superimposed by 1-5 blocks brick and be formed.
According to digging in-situ needs, column 1 can also include top column 13, and top column 13 is diagonally-installed to be stood at middle part
On column 12, top column 13 is based on the formation of middle part column 12 and extends out lamination type.Similarly, the outer wall of top column 13 from outside to inside according to
Secondary is screed C131 and brick layer C132, and screed C131 is using the Rock And Soil 3 on the outside of screed B121 as its oblique downslide
Put forth effort to support, brick layer C132 puts forth effort to support using the joining place of screed B121 and brick layer B122 as its oblique downslide.
A kind of lamination type that extends out also is provided herein and draws the construction method for digging spread foundation, in construction method of the present invention, first
The excavation construction of 1 part of column is carried out, then expand the excavation construction of 2 part of head, is included the following steps：
The first step, the construction of 1 part of column carry out applying for top column 13, middle part column 12 and bottom column 11 successively
Work.Due to the structure all same of top column 13, middle part column 12 and bottom column 11, top column 13 is elaborated herein
Construction method, middle part column 12 and bottom column 11 are carried out with reference to the construction method of top column 13, i.e. middle part column 12 and bottom
The construction method of portion's column 11 is identical with the construction method of top column 13.
As shown in figure 4, the construction method of top column 13 includes the following steps：
（1）On the basis of tower leg Center stake position is according to design stake diameter extend out it is oblique draw digging operation, what is extended out is specific
Size is calculated according to implementation on-site soil environment, required withdrawal resistance by calculation of the prior art.
（2）After drawing digging depth and reaching 0.5m-1.5m, on top, column 13 is first made again along its sideline using cement mortar retaining wall
Retaining wall is built by laying bricks or stones with clay brick blended cement mortar is secondary, is built by laying bricks or stones always to the aperture of top column 13.
（3）After the curing age that the adhesion strength between the clay brick in 13 sideline of top column reaches needed for design strength,
The oblique construction drawn digging reaming, carry out middle part column 12 still further below.
Second step expands the construction of 2 part of head, after the completion for the treatment of that bottom column 11 is constructed, carries out expanding head 21 and lower expansion successively
First 22 construction.
（1）The upper construction procedure for expanding head 21 includes：Downward oblique reaming is deep-cut on the basis of bottom column 11.Equally,
It first reuses that clay brick blended cement mortar is secondary to build retaining wall by laying bricks or stones using cement mortar retaining wall in upper expansion 21 upper edge of head its sideline, protects
After card clay brick forms arching between each other, then carry out the lower construction for expanding head 22.
（2）The lower construction procedure for expanding head 22 includes：Oblique reaming downwards is deep-cut on the basis of upper expansion head 21.Equally, exist
Lower expansion 22 upper edge of head its sideline first reuses that clay brick blended cement mortar is secondary to build retaining wall, lower expansion by laying bricks or stones using cement mortar retaining wall
First 22 retaining wall clay brick should be fitted closely with the lower bottom hole for expanding head 22.Treat that the lower retaining wall clay for expanding head 22 and cement mortar brick glue
After knotting strength reaches the curing age needed for design strength, steel reinforcement cage 4 is put into, pouring for concrete 5 is carried out, meets concrete 5
After maintaining age, which comes into operation.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection domain by appended claims and its
Equivalent defines.
Claims (7)
1. one kind extends out lamination type and draws digging spread foundation, including column（1）With expansion head（2）, column（1）Mounted on expansion head（2）On
Side, steel reinforcement cage（4）It is inserted in column（1）With expansion head（2）It is interior and pass through concrete（5）Pour fixation, it is characterised in that：
The expansion head（2）Including upper expansion head（21）With lower expansion head（22）, upper expansion head（21）It is diagonally-installed in lower expansion head（22）On；
The lower expansion head（22）Outer wall be followed successively by lower screed from outside to inside（221）With lower brick layer（222）, the upper expansion head（21）'s
Outer wall is followed successively by screed from outside to inside（211）With upper brick layer（212）, upper screed（211）Following screed（221）Outside
Rock And Soil（3）Put forth effort to support as its oblique downslide, upper brick layer（212）Following screed（221）With lower brick layer（222）'s
Joining place is puted forth effort to support as its oblique downslide；
The column（1）Including bottom column（11）With middle part column（12）, middle part column（12）It is diagonally-installed to be stood in bottom
Column（11）On；The bottom column（11）Outer wall be followed successively by screed A from outside to inside（111）With brick layer A（112）, in described
Portion's column（12）Outer wall be followed successively by screed B from outside to inside（121）With brick layer B（122）, screed A（111）More than screed
（211）With upper screed（211）Outside Rock And Soil（3）Joining place put forth effort to support as its oblique downslide, brick layer A（112）
More than screed（211）With upper brick layer（212）Joining place put forth effort to support as its oblique downslide, screed B（121）With sand
Pulp layer A（111）The Rock And Soil in outside（3）Put forth effort to support as its oblique downslide, brick layer B（122）With screed A（111）With
Brick layer A（112）Joining place to put forth effort to support as its oblique downslide.
2. one kind according to claim 1 extends out lamination type and draws digging spread foundation, it is characterised in that：The column（1）
For frustum cone structure.
3. one kind according to claim 1 extends out lamination type and draws digging spread foundation, it is characterised in that：The lower screed
（221）For cement mortar, the lower brick layer（222）Brick body be clay brick.
4. one kind according to claim 1 extends out lamination type and draws digging spread foundation, it is characterised in that：The column（1）
Further include top column（13）, top column（13）It is diagonally-installed in middle part column（12）On；The top column（13）It is outer
Wall is followed successively by screed C from outside to inside（131）With brick layer C（132）, screed C（131）With screed B（121）The ground in outside
Body（3）Put forth effort to support as its oblique downslide, brick layer C（132）With screed B（121）With brick layer B（122）Joining place make
Put forth effort to support for its oblique downslide.
5. one kind according to claim 1 extends out lamination type and draws digging spread foundation, it is characterised in that：The brick layer A
（112）Longitudinal length be 115mm-345mm.
6. a kind of lamination type that extends out according to claim 4 draws the construction method for digging spread foundation, which is characterized in that including
Following steps：
61）Column（1）Partial construction carries out top column successively（13）, middle part column（12）And bottom column（11）Apply
Work；
62）Expand head（2）Partial construction carries out expansion head successively（21）With lower expansion head（22）Construction；
Upper expansion head（21）Construction procedure include：In bottom column（11）On the basis of downwards oblique reaming deep-cut；In upper expansion head
（21）Its sideline of upper edge first reuses that clay brick blended cement mortar is secondary to build retaining wall by laying bricks or stones using cement mortar retaining wall, ensures clay
After brick forms arching between each other, then carry out lower expansion head（22）Construction；
Lower expansion head（22）Construction procedure include：In upper expansion head（21）On the basis of downwards oblique reaming deep-cut；In lower expansion head
（22）Its sideline of upper edge first reuses that clay brick blended cement mortar is secondary to build retaining wall, lower expansion head by laying bricks or stones using cement mortar retaining wall
（22）Retaining wall clay brick should be with lower expansion head（22）Bottom hole fit closely；Treat lower expansion head（22）Retaining wall clay and cement mortar
After brick adhesion strength reaches the curing age needed for design strength, it is put into steel reinforcement cage（4）, carry out concrete（5）Pour, meet
Concrete（5）After maintaining age, which comes into operation.
7. a kind of lamination type that extends out according to claim 6 draws the construction method for digging spread foundation, which is characterized in that described
Top column（13）Construction method include the following steps：
71）On the basis of tower leg Center stake position is according to design stake diameter extend out and oblique draw digging operation；
72）After drawing digging depth and reaching 0.5m-1.5m, in top column（13）It is first reused along its sideline using cement mortar retaining wall
Clay brick blended cement mortar is secondary to build retaining wall by laying bricks or stones, is built by laying bricks or stones always to top column（13）Aperture；
73）Treat top column（13）After adhesion strength between the clay brick in sideline reaches the curing age needed for design strength, then
It is oblique downwards to draw digging reaming, carry out middle part column（12）Construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284990.5A CN105756078B (en) | 2016-04-27 | 2016-04-27 | One kind extends out lamination type and draws digging spread foundation and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610284990.5A CN105756078B (en) | 2016-04-27 | 2016-04-27 | One kind extends out lamination type and draws digging spread foundation and its construction method |
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| Publication Number | Publication Date |
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| CN105756078A CN105756078A (en) | 2016-07-13 |
| CN105756078B true CN105756078B (en) | 2018-06-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622215A (en) * | 2020-06-05 | 2020-09-04 | 宁波市鄞州建筑有限公司 | Building pile foundation construction method |
| CN113445510B (en) * | 2021-08-06 | 2022-05-03 | 江苏兰馨园林有限公司 | Method for opening high-compactness building foundation pit |
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|---|---|---|---|---|
| CN1111308A (en) * | 1993-06-18 | 1995-11-08 | 孟凡林 | Design and construction method for large calibre poured pile and large-diameter bottom-enlarging pier |
| CN2871648Y (en) * | 2005-12-02 | 2007-02-21 | 郑百翔 | Manhole-pile expanding head |
| CN203440814U (en) * | 2013-09-13 | 2014-02-19 | 湖北省工业建筑集团有限公司 | Manually excavated pile structure |
| CN104343130A (en) * | 2013-07-25 | 2015-02-11 | 五冶集团上海有限公司 | Large-diameter manual hole digging expanded base pile foundation construction method |
| CN204570667U (en) * | 2015-01-05 | 2015-08-19 | 江苏建筑职业技术学院 | Hand excavated pile aperture safety device |
| CN205636774U (en) * | 2016-04-27 | 2016-10-12 | 中国能源建设集团安徽省电力设计院有限公司 | It draws to dig and expands subbottom plinth to expand lamination formula outward |
-
2016
- 2016-04-27 CN CN201610284990.5A patent/CN105756078B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111308A (en) * | 1993-06-18 | 1995-11-08 | 孟凡林 | Design and construction method for large calibre poured pile and large-diameter bottom-enlarging pier |
| CN2871648Y (en) * | 2005-12-02 | 2007-02-21 | 郑百翔 | Manhole-pile expanding head |
| CN104343130A (en) * | 2013-07-25 | 2015-02-11 | 五冶集团上海有限公司 | Large-diameter manual hole digging expanded base pile foundation construction method |
| CN203440814U (en) * | 2013-09-13 | 2014-02-19 | 湖北省工业建筑集团有限公司 | Manually excavated pile structure |
| CN204570667U (en) * | 2015-01-05 | 2015-08-19 | 江苏建筑职业技术学院 | Hand excavated pile aperture safety device |
| CN205636774U (en) * | 2016-04-27 | 2016-10-12 | 中国能源建设集团安徽省电力设计院有限公司 | It draws to dig and expands subbottom plinth to expand lamination formula outward |
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| Publication number | Publication date |
|---|---|
| CN105756078A (en) | 2016-07-13 |
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