CN106013133B - A kind of drilling squeezes reinforcement support disk pile and construction method - Google Patents
A kind of drilling squeezes reinforcement support disk pile and construction method Download PDFInfo
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- CN106013133B CN106013133B CN201610505444.XA CN201610505444A CN106013133B CN 106013133 B CN106013133 B CN 106013133B CN 201610505444 A CN201610505444 A CN 201610505444A CN 106013133 B CN106013133 B CN 106013133B
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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
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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
- E02D5/34—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
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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
- E02D5/72—Pile shoes
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- General Life Sciences & Earth Sciences (AREA)
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- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of drillings to squeeze reinforcement support disk pile, including precast pile tip, cross-section pile body and branch disk body, cross-section pile body is made of lengthways main steel bar and tie hoop, precast pile tip is located at the end of cross-section pile body, branch body is located at the outer wall of cross-section pile body, and branch disk body includes in branch diagonal bar under diagonal bar and branch, diagonal bar connects at an angle under diagonal bar and branch in branch.The present invention solves the problems, such as the cloth muscle in branch disk body, it ensure that the shape and stabilization of the wall of a borehole and branch reaming wall by elastic membrane, and concrete folder mud and other issues is solved, the extraction of elastic membrane alternately, avoids elastic membrane from retaining the adverse effect to pile side friction with concreting.The invention belongs to pile foundation engineering fields, and suitable for the construction of expanding branch grouting pile, the weak soil being limited in conventional method, sand etc. also have preferable applicability in stratum, obtain preferable technical economic benefit.
Description
Technical field
The present invention relates to a kind of drillings to squeeze reinforcement support disk pile and construction method, belongs to pile foundation engineering field, suitable for squeezing
Expand the construction of plate-resistant pouring pile, especially suitable for being applied in soft soil foundation containing the stake machine under the conditions of harder sandy soils, viscous soil horizon
Work.
Background technology
Expanding branch grouting pile is a kind of pile-type developed on the basis of multistage under-reamed pile technology, using a kind of special
It is used with hydraulic pressure branch squeeze equipment and existing piling machinery coordinative composition of equipments, the suitable soil layer in stake holes pressurize squeezed
It is formed " branch " or " disk ", while also the compacted compacting of surrounding soil, part improves physical features, the mechanical index of foundation soil, has
The effect ground potentiality that undermine increase the end bearing surface product of single pile, will be original only more there are one the point friction pile held a little is held to change into
Friction end-bearing pile a little is held at a end, so as to change the bearing mechanism of stake, increases considerably pile bearing capacity.
The compacted bearing disk pile of conventional method construction is not due to having any muscle material in extruding expanding body, in pile foundation loading process, branch
Disk body bears larger shearing force, and the shear resistance of plain concrete is weaker, be easy to cause branch body concrete and destroys and make branch
The setting of disk loses meaning, simultaneously as hole wall is unstable, the easy slump of clast particularly at branch reaming wall, when pouring
It is mixed into concrete, further weakens the intensity of concrete.
Therefore, for expanding branch grouting pile, ensure the shape of extruding-enlarging branch tray, improve concrete filling in branch
Property and improve branch disk body shearing strength, be key technical problem to be solved by this invention.
Invention content
It is an object of the invention to be directed to existing expanding branch grouting pile construction the problem of, provide a kind of brill
Hole squeezes reinforcement support disk pile and its construction method, and this method in branch disk body by setting extension branch diagonal bar to strengthen branch disk body
Shearing strength, while elastic membrane is taken to isolate ground clast, mud etc. with concrete, it is ensured that branch shape improves mixed
Solidifying soil pouring quality and intensity.
In order to realize above-mentioned technical purpose, present invention employs following technical schemes：
A kind of drilling squeezes reinforcement support disk pile, including precast pile tip, cross-section pile body and branch disk body, the Uniform-section Piles
Body is made of lengthways main steel bar and tie hoop, and the precast pile tip is located at the end of cross-section pile body, the branch position
In the outer wall of cross-section pile body, and the branch disk body includes in branch diagonal bar under diagonal bar and branch, diagonal bar in the branch
It is connected at an angle with diagonal bar under branch.
The precast pile tip is equipped with pre-buried external screw thread joint steel pipe, and the pre-buried external screw thread joint steel pipe is in longitudinal direction
The corresponding position of main reinforcement is equipped with pre-buried dowel, and the pre-buried dowel is located at the outside of pre-buried external screw thread joint steel pipe.
The bottom of the lengthways main steel bar is connect by straight screw sleeve with pre-buried dowel.
Diagonal bar is connect by sliding articulation piece with lengthways main steel bar in the branch, and diagonal bar passes through hinged under the branch
Part is connect with lengthways main steel bar, and diagonal bar is connected with diagonal bar under branch by articulation piece in the branch.
The sliding articulation piece and articulation piece include round connector groove block and connector protruding block, the circle
Shape connector groove block and connector protruding block, which combine to be formed, rotates freely structure.
The connector groove block surface of the sliding articulation piece is welded with sliding steel pipe.
The upper end of diagonal bar is connected by articulation piece with diagonal bar in branch under the branch, and the lower weld of diagonal bar exists under branch
It connects on limiting card, and passes through spring and be connected with spring positioning connector.
A kind of drill squeezes the construction method of reinforcement support disk pile, includes the following steps：
（1）Drilling：Aperture position sets steel pile casting, using mud off or dry operation pore-forming；
（2）Squeeze reaming：Using at extruding-enlarging branch tray machine in the earth formation opposite hard stratum branch is formed according to design requirement is squeezed
Pan Kuokongbi, and record practical branch position；
（3）Make precast pile tip：Assembling reinforcement skeleton and the pre-buried external screw thread joint steel pipe of setting, pre-buried dowel, and
Formwork casting concrete and formed；
（4）Make pile body steel reinforcement cage：Blanking processing is carried out to lengthways main steel bar and tie hoop according to design, then welds shape
Into steel reinforcement cage；
（5）Elastic membrane pressing structure makes and pre-installation：Elastic membrane pressing structure is pressed by elastic membrane briquetting, compression bar and top
Block is made, and filling concrete pipe of the lower part with filling concrete shoe and protrusion of bearing down on one is inserted into elastic membrane pressing structure
In intermediate circular hole, and with the pre-buried external screw thread joint steel pipe pre-connection on precast pile tip；
（6）Pile body steel reinforcement cage is connect with precast pile tip：By the pre-buried company on steel reinforcement cage lower end lengthways main steel bar and precast pile tip
Muscle is connect by straight screw sleeve to be connected；
（7）Branch diagonal bar is installed：According to step（2）The squeezed position of practical branch of record, the corresponding position of lengthways main steel bar
It is mutually welded with articulation piece and the connector protruding block surface for sliding articulation piece, the connector groove block of diagonal bar and articulation piece under branch
Surface is mutually welded, and diagonal bar passes through the sliding steel pipe that welds on sliding articulation piece in branch, and diagonal bar leads in diagonal bar and branch under branch
Articulation piece is crossed to be connected；
（8）Spring and tensioning fixation are installed：By ring spring positioning link penetration concrete intrusion pipe, spring one end connects
Spring positioning connector is connect, is connected after other end tensioning with connecting limiting card, connection limiting card is welded under branch on diagonal bar, and
Spring tensioning fixation is carried out by spring constraint structure temporarily.
（9）Elastic membrane is installed：One of elastic membrane is set outside steel reinforcement cage, and elastic membrane lower end is placed in the groove on precast pile tip
It is interior, filling concrete pipe is screwed, protrusion of bearing down on one thereon is made to push down elastic membrane pressing structure, and then elastic membrane is fixed on prefabricated
In pile top；
（10）Transfer steel reinforcement cage and water filling extension elastic membrane：The steel reinforcement cage made entirety is transferred in place in drilling,
And injected clear water, elastic membrane, which extends, under hydraulic pressure effect is close to the wall of a borehole and branch reaming wall；
（11）Branch diagonal bar extends in place：Lift lever in spring constraint structure is pulled out, spring is shunk therewith, makes branch
Diagonal bar rotation and sliding, extend in branch body on lower diagonal bar and branch；
（12）Concrete perfusion and Synchronous lifting elastic membrane：By filling concrete pipe subaqueous concreting, work as coagulation
After native influx height reaches certain value, rotation filling concrete pipe is allowed to be separated with precast pile tip, while elastic membrane lower part also takes off
From precast pile tip, elastic membrane, and alternately concrete perfusion are above pulled out, keeps elastic membrane 3m below concrete surface.
The step（8）In spring constraint structure by spring constraint muscle, spring constraint bar, spring constraint ring and lift lever
Composition, the spring constraint muscle are caught in the corresponding reserving hole of connection limiting card, and the spring constraint ring is caught in spring positioning
In the corresponding reserving hole of connector.
Present invention drilling squeezes having the beneficial effect that for reinforcement support disk pile and its construction method：
1st, the extension of branch diagonal bar is controlled by spring, spring constraint structure, articulated mounting, solves the cloth in branch disk body
The problem of muscle, improves the shearing strength of branch disk body；
2nd, elastic membrane is fixed on precast pile tip by elastic membrane press device, the water filling guarantor during reinforcement cage immersion
Demonstrate,prove the shape and stabilization of the wall of a borehole and branch reaming wall, and muddy water in clearance hole；
3rd, precast pile tip is disengaged it from by rotating filling concrete pipe, and elastic membrane is with press device and prefabricated pile
Point is separated and can be extracted after filling concrete certain altitude, and elastic membrane is avoided to retain the unfavorable shadow to pile side friction
It rings, effectively improves bearing capacity of pile foundation.
Description of the drawings
Fig. 1 is that drilling squeezes reinforcement support disk pile structure diagram；
Fig. 2 is branch diagonal bar original state figure；
Fig. 3 is branch diagonal bar extended mode figure；
Fig. 4 is precast pile tip and elastic membrane press device connection figure；
Fig. 5 is elastic membrane press device vertical view；
Fig. 6 is spring connection and tensioning fixation figure under branch diagonal bar original state；
Fig. 7 is spring constraint structure chart；
Fig. 8 is the spring contraction connection figure under branch diagonal bar extended mode；
Fig. 9 is articulation piece structure chart；
Figure 10 is sliding articulation piece structure chart.
In figure：1- Crust Layers, 2- Muddy Bottoms soft layers, 3- hard stratums, 4- precast pile tips, the pre-buried dowels of 5-,
6- straight screw sleeves, 7- branch disk bodies, 8- cross-section pile bodies, 9- steel pile castings, 10- lengthways main steel bars, 11- tie hoops, 12- concrete
Intrusion pipe, diagonal bar in 13- branchs, diagonal bar under 14- branchs, 15- springs, the pre-buried external screw thread joint steel pipes of 16-, 17- bear down on one protrusion,
18- elastic membranes, 19- compression bars, 20- filling concrete shoes, 21- elastic membrane briquettings, 22- grooves, 23- tops briquetting, 24- springs
Positioning link, 25- connection limiting cards, 26- sliding articulation pieces, 27- articulation pieces, 28- spring constraint muscle, 29- spring constraint bars,
30- connector groove blocks, 31- connector protruding blocks, 32- sliding steel pipes, 33- the wall of a boreholes, 34- branch reaming walls, 35- springs are about
Beam ring, 36- lift levers.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to
This.
The construction technical requirements such as elastic film production, steel reinforcement cage binding, drilling and forming hole, branch be squeezed in embodiment of the present invention
Repeat no more, emphasis illustrate embodiments of the present invention, below in conjunction with the accompanying drawings and pass through embodiment to the present invention make further it is detailed
Describe in detail bright, which is not limited to following embodiment.
As Figure 1-10 shows, present invention drilling extruding reinforcement support disk pile includes precast pile tip 4, cross-section pile body 8, branch disk body
7th, lengthways main steel bar 10, tie hoop 11, diagonal bar 14 etc. under diagonal bar 13, branch in branch.
Drilling squeezes reinforcement support disk pile diameter 1000mm, long 20m, stratum be successively from top to bottom 3m thickness crust layer 1,
The soft layer 2 of 10m thickness, 8m thickness be plastic-hard plastic shape farinose argillic horizon 3.1 branch disk body 7 is set in crust layer, in farinose argillic horizon
3 branch disk bodies 7, branch disk body maximum gauge 2000mm, first branch disk body centre-to-centre spacing earth's surface 2m, rear three branch disk body spacing are set
2m。
4 diameter 1050mm of precast pile tip, centre are equipped with the pre-buried external screw thread joint steel pipe of diameter 150mm, thickness 8mm
16, pre-buried dowel 5 uses the pre- buried depth of the HRB335 spirals of Ф 22, external screw thread joint steel pipe 16 and pre-buried dowel 5
Degree meets corresponding anchoring requirement, and the depth of groove 22 is 50mm, width 100mm.
Lengthways main steel bar 10 uses the HRB335 screw-thread steels of 24 Ф 22, and stirrup uses the HPB235 light round steel of 12@200 of Ф
Muscle, bottom are connect by straight screw sleeve 6 with pre-buried dowel 5.
Each branch disk body 7 is using diagonal bar 14 under diagonal bar 13 in 12 branchs and 12 branchs, and branch diagonal bar is by Ф's 20
The screw-thread steel making of HRB335, length 1200mm, are connect with lengthways main steel bar 10 by sliding articulation piece 26 and articulation piece 27 respectively,
Diagonal bar 14 is connected by articulation piece 27 under diagonal bar 13 and branch in branch, slide articulation piece 26 and articulation piece 27 diameter 50mm,
Thickness 30mm slides 32 diameter 28mm of sliding steel pipe, the thickness 4mm of 30 surface soldered of connector groove block of articulation piece 26.
14 upper end of diagonal bar is connected by articulation piece 27 with diagonal bar in branch 13 under branch, and lower part is welded in connection limiting card 25
On, and pass through spring 15 and be connected with spring positioning connector 24.
The work progress that present invention drilling squeezes reinforcement support disk pile is as follows：
（1）Drilling：Aperture position sets steel pile casting 9, using mud off or dry operation pore-forming；
（2）Squeeze reaming：Using at extruding-enlarging branch tray machine in the earth formation opposite hard stratum branch is formed according to design requirement is squeezed
Disk reaming wall 34, and record practical branch position；
（3）Make precast pile tip 4：Assembling reinforcement skeleton and the pre-buried external screw thread joint steel pipe 16 of setting, pre-buried dowel
5, and formwork casting concrete and formed；
（4）Make pile body steel reinforcement cage：Blanking processing is carried out to lengthways main steel bar 10 and tie hoop 11 according to design, is then welded
It connects to form steel reinforcement cage；
（5）Elastic membrane pressing structure makes and pre-installation：Elastic membrane pressing structure by elastic membrane briquetting 21, compression bar 19, on
Portion's briquetting 23 etc. is made, and filling concrete pipe 12 of the lower part with filling concrete shoe 20 and protrusion 17 of bearing down on one is inserted into
In circular hole among elastic membrane pressing structure, and with pre-buried 16 pre-connection of external screw thread joint steel pipe on precast pile tip 4；
（6）Pile body steel reinforcement cage is connect with precast pile tip 4：By steel reinforcement cage lower end lengthways main steel bar 10 with it is pre- on precast pile tip 4
Dowel 5 is buried by straight screw sleeve 6 to be connected；
（7）Branch diagonal bar is installed：According to the squeezed position of practical branch that step 2 records, the corresponding position of lengthways main steel bar 10
It is mutually welded with articulation piece 27 and 31 surface of connector protruding block for sliding articulation piece 26, the company of diagonal bar 14 and articulation piece 27 under branch
30 surface of fitting groove block is mutually welded, and diagonal bar 13 passes through the sliding steel pipe 32 that welds on sliding articulation piece 26 in branch, under branch
Diagonal bar 14 is connected with diagonal bar in branch 13 by articulation piece 27；
（8）Spring 15 and tensioning fixation are installed：By 24 penetration concrete intrusion pipe 12 of ring spring positioning link, spring
15 one end connecting spring positioning links 24 are connected after other end tensioning with connecting limiting card 25, and connection limiting card 25 is welded in
Under branch on diagonal bar 14, and pass through spring constraint structure and carry out spring tensioning fixation temporarily.
（9）Elastic membrane 18 is installed：One of elastic membrane 18 is set outside steel reinforcement cage, and 18 lower end of elastic membrane is placed in precast pile tip 4
On groove 22 in, screw filling concrete pipe 12, protrusion 17 of bearing down on one thereon made to push down elastic membrane pressing structure, and then by bullet
Property film 18 is fixed on precast pile tip 4；
（10）Transfer steel reinforcement cage and water filling extension elastic membrane 18：The steel reinforcement cage made entirety is transferred in drilling
Position, and injected clear water, elastic membrane 18, which extends, under hydraulic pressure effect is close to the wall of a borehole 33 and branch reaming wall 34；
（11）Branch diagonal bar extends in place：Lift lever 36 in spring constraint structure is pulled out, spring 15 is shunk therewith, is made
Diagonal bar 13 is rotated and is slid in diagonal bar 14 and branch under branch, is extended in branch body；
（12）Concrete perfusion and Synchronous lifting elastic membrane 18：By 12 subaqueous concreting of filling concrete pipe, when
After filling concrete height reaches certain value, rotation filling concrete pipe 12 is allowed to be separated with precast pile tip 4, while elastic membrane 18
Lower part is also detached from precast pile tip 4, above pulls out elastic membrane 18, and alternately concrete perfusion, keeps elastic membrane 18 below concrete surface
3m。
The present invention is solved using spring 15, the extension of spring constraint structure, articulated mounting control branch diagonal bar in branch
In body 7 the problem of cloth muscle, the shape and stabilization of the wall of a borehole 33 and branch reaming wall 34 are ensure that by elastic membrane 18, and is solved mixed
Solidifying soil folder mud and other issues, the extraction of elastic membrane 18 alternately, avoids elastic membrane 18 from retaining to stake side with concreting
The adverse effect of frictional resistance.
The invention belongs to pile foundation engineering fields, suitable for the construction of expanding branch grouting pile, are limited in conventional method soft
Also there is preferable applicability in the stratum such as soil, sand, obtain preferable technical economic benefit.
Above-described embodiment is only used for the inventive concept for illustrating the present invention rather than the restriction to rights protection of the present invention,
All changes for carrying out unsubstantiality to the present invention using this design, should all fall into protection scope of the present invention.
Claims (2)
1. a kind of drill squeezes the construction method of reinforcement support disk pile, the drilling squeeze reinforcement support disk pile include precast pile tip,
Cross-section pile body and branch disk body, the cross-section pile body are made of lengthways main steel bar and tie hoop, the precast pile tip position
In the end of cross-section pile body, the branch body is located at the outer wall of cross-section pile body, and the branch disk body is included in branch
Diagonal bar under diagonal bar and branch, diagonal bar connects at an angle under diagonal bar and branch in the branch；On the precast pile tip
Equipped with pre-buried external screw thread joint steel pipe, pre-buried dowel is equipped in the corresponding position of lengthways main steel bar on precast pile tip, described is pre-
Bury the outside that dowel is located at pre-buried external screw thread joint steel pipe；Diagonal bar is by sliding articulation piece and lengthways main steel bar in the branch
Connection, diagonal bar is connect by articulation piece with lengthways main steel bar under the branch, and diagonal bar leads under diagonal bar and branch in the branch
Cross articulation piece connection；The sliding articulation piece and articulation piece include round connector groove block and connector protruding block, institute
The round connector groove block and connector protruding block stated, which combine to be formed, rotates freely structure；The connector of the sliding articulation piece
Groove block surface is welded with sliding steel pipe；The upper end of diagonal bar is connected by articulation piece with diagonal bar in branch under the branch, under branch
The lower weld of diagonal bar passes through spring and is connected with spring positioning connector on connection limiting card；It is characterized by comprising with
Lower step：
（1）Drilling：Aperture position sets steel pile casting, using mud off or dry operation pore-forming；
（2）Squeeze reaming：Expand using at extruding-enlarging branch tray machine in the earth formation opposite hard stratum according to the squeezed branch that formed of design requirement
Hole wall, and record practical branch position；
（3）Make precast pile tip：Assembling reinforcement skeleton and the pre-buried external screw thread joint steel pipe of setting, pre-buried dowel, and formwork
Casting concrete and formed；
（4）Make pile body steel reinforcement cage：Blanking processing is carried out to lengthways main steel bar and tie hoop according to design, then welding forms steel
Muscle cage；
（5）Elastic membrane pressing structure makes and pre-installation：Elastic membrane pressing structure is by elastic membrane briquetting, compression bar and top briquetting system
It forms, elastic membrane briquetting is located in the groove on precast pile tip, and elastic membrane briquetting top is connect with compression bar, the connection of compression bar top
Top briquetting is formed with circular hole among elastic membrane pressing structure, and lower part is mixed with filling concrete shoe and protrusion of bearing down on one
Solidifying soil intrusion pipe is inserted into the circular hole among elastic membrane pressing structure, and pre- with the pre-buried external screw thread joint steel pipe on precast pile tip
Connection；
（6）Pile body steel reinforcement cage is connect with precast pile tip：By the pre-buried dowel on steel reinforcement cage lower end lengthways main steel bar and precast pile tip
It is connected by straight screw sleeve；
（7）Branch diagonal bar is installed：According to step（2）Record the squeezed position of practical branch, by the corresponding position of lengthways main steel bar with
Articulation piece is mutually welded with the connector protruding block surface of sliding articulation piece, the connector groove block table of diagonal bar and articulation piece under branch
Face is mutually welded, and diagonal bar passes through the sliding steel pipe that welds on sliding articulation piece in branch, and diagonal bar passes through in diagonal bar and branch under branch
Articulation piece is connected；
（8）Spring and tensioning fixation are installed：By ring spring positioning link penetration concrete intrusion pipe, spring one end connection bullet
Spring positioning link is connected after other end tensioning with connecting limiting card, and connection limiting card is welded under branch on diagonal bar, and pass through
Spring constraint structure carries out spring tensioning fixation temporarily；Spring constraint structure is by spring constraint muscle, spring constraint bar, spring constraint
Ring and lift lever composition, the spring constraint muscle are caught in the corresponding reserving hole of connection limiting card, spring constraint bar one end with
Spring constraint muscle connects, and the other end is connect with spring constraint ring, and lift lever is connect with spring constraint ring, the spring constraint ring card
Enter in the corresponding reserving hole of spring positioning connector；
（9）Elastic membrane is installed：One of elastic membrane is set outside steel reinforcement cage, elastic membrane lower end is placed in the groove on precast pile tip,
Filling concrete pipe is screwed, protrusion of bearing down on one thereon is made to push down elastic membrane pressing structure, and then elastic membrane is fixed on prefabricated pile
On point；
（10）Transfer steel reinforcement cage and water filling extension elastic membrane：The steel reinforcement cage made entirety is transferred in place, and note in drilling
Enter clear water, elastic membrane, which extends, under hydraulic pressure effect is close to the wall of a borehole and branch reaming wall；
（11）Branch diagonal bar extends in place：Lift lever in spring constraint structure is pulled out, spring is shunk therewith, makes branch oblique
Diagonal bar rotation and sliding, extend in branch body on muscle and branch；
（12）Concrete perfusion and Synchronous lifting elastic membrane：By filling concrete pipe subaqueous concreting, when concrete fills
Up to after certain value, rotation filling concrete pipe is allowed to be separated with precast pile tip note height, at the same elastic membrane lower part be also detached from it is pre-
Pile top processed above pulls out elastic membrane, and alternately concrete perfusion, keeps elastic membrane 3m below concrete surface.
2. drilling according to claim 1 squeezes the construction method of reinforcement support disk pile, it is characterised in that：The lengthways main steel bar
Bottom connect by straight screw sleeve with pre-buried dowel.
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| CN201610505444.XA CN106013133B (en) | 2016-07-01 | 2016-07-01 | A kind of drilling squeezes reinforcement support disk pile and construction method |
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| CN201610505444.XA CN106013133B (en) | 2016-07-01 | 2016-07-01 | A kind of drilling squeezes reinforcement support disk pile and construction method |
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| CN106013133B true CN106013133B (en) | 2018-06-12 |
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| CN110042827B (en) * | 2018-01-17 | 2022-02-25 | 中国电力科学研究院有限公司 | Reinforcing device for bearing disc of extruded and expanded cast-in-place pile and using method |
| CN110055954A (en) * | 2018-01-17 | 2019-07-26 | 中国电力科学研究院有限公司 | A kind of squeezed bored concrete pile force bearing disk arrangement of reinforcement device and application method |
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| CN108411899B (en) * | 2018-05-22 | 2019-12-24 | 广东华星建设集团有限公司 | Application of rust and corrosion prevention protection structure of building hole pile reinforced concrete column |
| CN110863485B (en) * | 2019-12-02 | 2021-07-09 | 河南科技大学 | Pile forming method for expanding disc pile |
| CN111472349B (en) * | 2020-05-06 | 2021-05-25 | 淮阴工学院 | Supporting disc pile |
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| CN113152441A (en) * | 2021-04-26 | 2021-07-23 | 南京国忠建筑工程有限公司 | Cast-in-situ bored pile structure and construction method thereof |
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| JP2005146577A (en) * | 2003-11-12 | 2005-06-09 | Yoshikazu Hara | Reinforcing cage for foundation pile, and method of reinforcement arrangement for enlarging enlarged bottom part |
| CN202718104U (en) * | 2012-05-25 | 2013-02-06 | 中冶交通工程技术有限公司 | Squeezing-expanding support plate steel pipe filling pile |
| CN203238625U (en) * | 2013-04-17 | 2013-10-16 | 山东同圆设计集团有限公司 | Multi-section squeeze-expansion supporting disk uplift pile distributing ribs in segmented mode |
| CN103835284A (en) * | 2014-02-21 | 2014-06-04 | 安徽省公路桥梁工程有限公司 | Karst area drilling cast-in-place pile structure and construction method |
| CN203947468U (en) * | 2014-06-30 | 2014-11-19 | 河北省电力勘测设计研究院 | A kind of Near Ground place expands the compacted bearing disk pile of section |
| CN205857167U (en) * | 2016-07-01 | 2017-01-04 | 绍兴文理学院 | A kind of boring extruding reinforcement support disk pile |
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| CN106013133A (en) | 2016-10-12 |
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