CN107034877B - Combine post jacking device and its construction method in pile end stake side - Google Patents
Combine post jacking device and its construction method in pile end stake side Download PDFInfo
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- CN107034877B CN107034877B CN201710347157.5A CN201710347157A CN107034877B CN 107034877 B CN107034877 B CN 107034877B CN 201710347157 A CN201710347157 A CN 201710347157A CN 107034877 B CN107034877 B CN 107034877B
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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
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- Engineering & Computer Science (AREA)
- General 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)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of pile end stake sides to combine post jacking device, including steel reinforcement cage, the lateral elasticity cavity that is coated on steel reinforcement cage lower outside, be fixed on steel reinforcement cage for being the side squeezing unit of lateral elasticity cavity slip casting and for the end squeezing unit for steel reinforcement cage end mud jacking, wherein the lateral elasticity cavity includes elastic film and positioned at elastic film upper/lower terminal and clamps the double-deck steel loop of the elastic film, the bilayer steel loop is fixedly connected by steel bar with steel reinforcement cage, and forms gap between lateral elasticity cavity and steel reinforcement cage；The steel reinforcement cage is outer, in elastic film, close on and be arranged with rubber pneumatic bag device at Dual-layer steel loop respectively.Post jacking device is combined using pile end stake of the present invention side, the load-carrying properties of pile foundation can be effectively improved, reduces settlement amount of pile foundation, cost is greatly lowered；The device of the invention simple structure, construction method are reasonable, easy to operate, securely and reliably, are suitble to install at the construction field (site), easy to promote and utilize.
Description
Technical field
The present invention relates to the bored concrete pile squeezing units and its construction method more particularly to pile end of field of civil engineering
Stake side combination post jacking device and its construction method.
Background technique
Bored concrete pile is the most commonly used base form that builds a bridge, because its selection flexibly, construction be not subject to seasonal restrictions,
The advantages that environmental pollution is smaller, the base form is using more and more extensive.But since filling pile construction is in the process to soil around pile
And the disturbance of bearing course at pile end, and side mudcake and a sediment of the hole bottom are generated, to influence pile quality, cause bearing capacity of pile foundation big
It is big to reduce.And post-grouting technology can improve above-mentioned problem, improve Ultimate Bearing Capacity, reduce settling amount, therefore, in recent years
The technology is widely used and develops.
But there is uncertain and influence factor complexity during stake side pressure grouting or pile tip grouting in common post-grouting technology,
Pressure slurries make it that can not form ideal geometry slurry bubble body in the randomness of stake side or stake end flow direction, meanwhile, it estimates
Reasonable mud jacking amount and mud jacking pressure cannot be effectively controlled, thus the vertical bearing capacity for causing bored concrete pile show compared with
Big discreteness makes post jacking that required effect often be not achieved.So how to solve the above problems is to effectively improve stake
The key of end resistance and pile side friction keeps post-grouting technology more reasonable.
It would therefore be highly desirable to solve the above problems.
Summary of the invention
Goal of the invention: the first object of the present invention be to provide it is a kind of can solve a side or stake end slurries flow direction not really
Qualitative question forms ideal geometry slurry bubble body, and efficiently controls the pile end stake side combination of mud jacking amount and mud jacking pressure
Post jacking device.
Another goal of the invention of the invention is to provide the construction method of pile end stake side combination post jacking device.
Technical solution: in order to achieve the above object, post jacking device is combined in a kind of pile end stake side of the present invention,
Including steel reinforcement cage, the lateral elasticity cavity that is coated on steel reinforcement cage lower outside, be fixed on steel reinforcement cage for for lateral elasticity
The side squeezing unit of cavity slip casting and for the end squeezing unit for steel reinforcement cage end mud jacking, wherein the lateral elasticity chamber
Body includes elastic film and positioned at elastic film upper/lower terminal and clamps the double-deck steel loop of the elastic film, and the bilayer steel loop is logical
It crosses steel bar to be fixedly connected with steel reinforcement cage, and forms gap between lateral elasticity cavity and steel reinforcement cage；The steel reinforcement cage is outer, elastic
In film, closes on and be arranged with rubber pneumatic bag device at Dual-layer steel loop respectively.
Preferably, several lateral elasticity cavitys are placed within the scope of full pile cutoff from bottom to top on the outside of the steel reinforcement cage.
Wherein, the rubber pneumatic bag device includes air bag hose, the hard steel pipe and high torque for connecting air bag hose both ends
Bicyclic pipe clamp is connected with air bag madjack pipe on the hard steel pipe, and air bag madjack pipe is fixed on steel reinforcement cage, extends to steel reinforcement cage
Top.
Preferably, the quantity of the end squeezing unit is at least two, is distributed on steel reinforcement cage, every one end mud jacking dress
It sets including end mud jacking device and pile tip grouting pipe, the pile tip grouting pipe is fixed on the inside of steel reinforcement cage, extends at the top of steel reinforcement cage.
Further, the quantity of the side squeezing unit is at least two, is distributed on steel reinforcement cage, each side mud jacking dress
It sets including side mud jacking device and stake side pressure grouting pipe, this side pressure grouting pipe upwardly extends supreme clad steel ring from steel reinforcement cage exterior bottom
Place is to infolding, then along steel reinforcement cage disposed inboard, until at the top of steel reinforcement cage；The side mud jacking device is located in elastic film.
The construction method of combination post jacking device in a kind of pile end stake side of the invention, which is characterized in that including as follows
Step:
(1) precast reinforced cage, the double-deck steel loop, elastic film, rubber pneumatic bag device, end squeezing unit and side mud jacking dress
It sets；
(2) the interior steel ring welding in the double-deck steel loop is fixed on to the lower part of steel reinforcement cage using steel bar, up and down between interior steel loop
It is separated by a distance；
(3) mounting end squeezing unit: pile tip grouting pipe is symmetrically fixed on the inside of steel reinforcement cage, and end mud jacking device is located at stake
Hold the lower end of madjack pipe；
(4) side squeezing unit is installed: stake side pressure grouting pipe is symmetrically fixed on steel reinforcement cage, stake side pressure grouting pipe is from steel reinforcement cage
Exterior bottom upwardly extends at supreme interior steel loop to infolding, then along steel reinforcement cage disposed inboard, until at the top of steel reinforcement cage；Bending part
Stake side pressure grouting pipe is connected by elbow；
(5) rubber pneumatic bag device is installed: outside steel reinforcement cage, up and down between steel loop, and close at Dual-layer steel loop and cover
If two rubber pneumatic bag devices, the air bag madjack pipe of each rubber pneumatic bag device extends upwardly to reinforcing bar cage top on the inside of steel reinforcement cage
Portion；
(6) lateral elasticity cavity is installed: the upper and lower ends of elastic film are fixed on corresponding interior steel loop by outer steel loop
On, complete the assembly of pile end stake side combination post jacking device；
(7) by the pile end stake side assembled combination post jacking device hang to stake position, to rubber pneumatic bag device into
Row gas-flow closure；
(8) casting concrete in the hole of stake position, concrete initial set formed pile body, to pile tip grouting pipe, stake side pressure grouting pipe into
Row pressure water opens plug test, dredges mud jacking pipeline and opens end mud jacking device and side mud jacking device；
(9) mud jacking is carried out to rubber pneumatic bag device, terminates mud jacking when mud jacking amount reaches the 90% of discreet value, and double up and down
Rigid boundary condition is formed at layer steel loop；
(10) mud jacking is carried out to stake side, a side slurries is made radially to diffuse to form ideal column somaplasm in lateral elasticity cavity
Bubble terminates mud jacking when mud jacking amount reaches the 90% of discreet value；
(11) after the completion of stake side pressure grouting, rigid boundary condition is formed in steel reinforcement cage bottom；Mud jacking is carried out to stake end, so that stake
End slurries are radial or diffuse to form ideal orbicule slurry bubble downwards, terminate mud jacking when mud jacking amount reaches the 90% of discreet value.
The utility model has the advantages that compared with prior art, the present invention has following remarkable advantage:
1) present invention solves a side and stake end slurries by installing rubber pneumatic bag and lateral elasticity cavity on steel reinforcement cage
The uncertainty of flow direction, and the problem of ideal geometry slurry bubble body cannot be formed, make grout pile side friction and stake end
Resistance is effectively improved；
2) pile foundation being perfused using present invention combination squeezing unit, can effectively improve the load-carrying properties of pile foundation, reduce
Cost is greatly lowered in settlement amount of pile foundation；
3) present invention can calculate the mud jacking amount of rubber pneumatic bag device according to the size of air bag hose in rubber pneumatic bag device,
The slurries amount being pressed into air bag hose is controlled 90%, prevents mud jacking from excessively causing rubber pneumatic bag failure of apparatus；Stake end, stake side pressure
Slurry amount can be estimated by ideal stake end spherical and stake lateral column body is formed, the slurries in jacked pile end, stake side pressure grouting pipe
Amount is preferably controlled the 90% of estimated value, and stake end, stake side pressure grouting pressure can be obtained according to ball (column) bore expansion theoretical calculation；The present invention
Realization efficiently controls mud jacking amount and mud jacking pressure, reduces uncertain factor during post jacking, it is expected that guarantee reaches post jacking
Effect；
4) the device of the invention simple structure, construction method are reasonable, easy to operate, securely and reliably, economic and practical, are suitble to
Construction site installation, it is easy to promote and utilize.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is top view of the invention；
Fig. 3 is the structural schematic diagram of rubber pneumatic bag device in the present invention；
Fig. 4 is the structural schematic diagram of lateral elasticity cavity in the present invention；
Fig. 5 is the structural schematic diagram using pile body prepared by the present invention.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of pile end stake side combination post jacking device of the invention include steel reinforcement cage 1, it is lateral
Flexible cavity 2, side squeezing unit 3, end squeezing unit 4 and rubber pneumatic bag device 5.As shown in figure 4, lateral elasticity cavity 2
It is coated on 1 lower outside of steel reinforcement cage, lateral elasticity cavity 2 is including elastic film 201 and is located at 201 upper/lower terminal of elastic film
And the double-deck steel loop 202 of the elastic film 201 is clamped, which is fixedly welded by steel bar 203 with steel reinforcement cage 1, and
Gap is formed between lateral elasticity cavity 2 and steel reinforcement cage 1；The length of steel bar 203 determines the size in gap, and the steel bar
203 length need to meet the thickness requirement of concrete cover.Side squeezing unit 3 is fixed on steel reinforcement cage 1, for being lateral
Slip casting is carried out in flexible cavity 2.The quantity of above-mentioned side squeezing unit 3 is at least two, is distributed on steel reinforcement cage 1, each side
Squeezing unit 3 include side mud jacking device 301 and stake side pressure grouting pipe 302, this side pressure grouting pipe 302 from 1 exterior bottom of steel reinforcement cage to
On extend at the double-deck steel loop 202 to infolding, then along 1 disposed inboard of steel reinforcement cage, until 1 top of steel reinforcement cage；The side pressure
Slurry device 301 is located in lateral elasticity cavity 2.And it is realized and is connected by elbow between the stake side pressure grouting pipe 302 of bending part.The present invention
By installing rubber pneumatic bag and lateral elasticity cavity on steel reinforcement cage, solve the uncertain of a side and stake end slurries flow direction
Property, and the problem of ideal geometry slurry bubble body cannot be formed, mention grout pile side friction and end resistance effectively
It is high.
The distance between bilateral steel loop is according to " technical code for building pile foundation " and " highway bridge and culvert ground and base above and below the present invention
Plinth design specification " it can be identified as 12m, i.e. stake side pressure grouting plays humidification to pile body 12m.The present invention only gives at stake end
Laid lateral elasticity cavity between the position 12m of stake end, can, geological conditions long according to stake and bearing capacity of pile foundation etc. want
It asks, is laying lateral elasticity cavity again apart from the stake end position 12m and between the position 24m of stake end, can also wanted according to spacing
It asks within the scope of the long full pile cutoff of stake and is covered with lateral elasticity cavity.
Above-mentioned end squeezing unit 4 is fixed on steel reinforcement cage 1, for carrying out slip casting for 1 end of steel reinforcement cage.End mud jacking
The quantity of device 4 is at least two, is distributed on steel reinforcement cage 1, and every one end squeezing unit 4 includes end mud jacking device 401 and stake end
Madjack pipe 402, the pile tip grouting pipe 402 is fixed on the inside of steel reinforcement cage 1, extends to 1 top of steel reinforcement cage.Pile tip grouting pipe of the present invention
Number is generally laid according to stake diameter size, as D < 1200mm, lays 2 pile tip grouting pipes；As 1200mm≤D≤2500mm, 3 are laid
Root pile tip grouting pipe；Work as D > 2500mm, lays 4 pile tip grouting pipes.And stake side also can be big according to stake diameter according to pile tip grouting pipe
Small laying, and surrounding is uniform or is symmetrically arranged on steel reinforcement cage.
As shown in figure 3, the present invention during casting concrete in order to prevent concrete to expanding on the outside of the flexible cavity of stake side
Rigid boundary condition is formed at scattered and stake side pressure grouting stage Dual-layer steel loop, using rubber pneumatic bag device 5 to Dual-layer steel
Ring portion position is sealed, and wherein rubber pneumatic bag device 5 includes air bag hose 501, the hard steel pipe for connecting 501 both ends of air bag hose
502 and the bicyclic pipe clamp 503 of high torque, air bag madjack pipe 504, air bag mud jacking are connected with by elbow on the hard steel pipe 502
Pipe 504 is fixed on steel reinforcement cage 1, extends to 1 top of steel reinforcement cage.Using the bicyclic pipe clamp 503 of high torque by air bag hose 501 and firmly
The connecting portion of matter steel pipe 502 connects to form airtight sealing.
The present invention is pressed into the intracorporal slurry of lateral elasticity chamber by the fixing fabric structure stake side pressure grouting amount of the lateral flexible cavity of calculating
Liquid measure control is 90%, and stake end stake side pressure grouting can form ideal stake lateral column shape and stake end spherical on demand, and mud jacking pressure can
It is calculated according to shape is formed；Present invention realization efficiently controls mud jacking amount and mud jacking pressure, reduces post jacking in the process not
Determine factor, guarantee reaches post jacking expected effect.
A kind of construction method of combination post jacking device in pile end stake side of the invention, includes the following steps:
(1) precast reinforced cage 1, double-deck steel loop 202, elastic film 201, rubber pneumatic bag device 5,4 and of end squeezing unit
Side squeezing unit 3；
(2) the interior steel ring welding in the double-deck steel loop 202 is fixed on to the lower part of steel reinforcement cage 1 using steel bar 203, up and down interior steel
It is separated by a distance between ring；
(3) pile tip grouting pipe 402 mounting end squeezing unit 4: is symmetrically fixed on 1 inside of steel reinforcement cage, end mud jacking device
401 are located at the lower end of pile tip grouting pipe 402；
(4) side squeezing unit 3 is installed: stake side pressure grouting pipe 302 being symmetrically fixed on steel reinforcement cage 1, stake side pressure grouting pipe 302
It upwardly extends from supreme interior steel loop from 1 exterior bottom of steel reinforcement cage to infolding, then along 1 disposed inboard of steel reinforcement cage, until steel reinforcement cage 1 pushes up
Portion；The stake side pressure grouting pipe 302 of bending part is connected by elbow；
(5) installation rubber pneumatic bag device 5: outside steel reinforcement cage 1, between upper and lower interior steel loop, and set at interior steel loop up and down is closed on
If the air bag madjack pipe 504 of two rubber pneumatic bag devices 5, each rubber pneumatic bag device 5 extends upwardly to reinforcing bar on the inside of steel reinforcement cage 1
1 top of cage；
(6) lateral elasticity cavity 2 is installed: the upper and lower ends of elastic film 201 are bolted to by outer steel loop
On corresponding interior steel loop, the assembly of pile end stake side combination post jacking device is completed；
(7) by the pile end stake side assembled combination post jacking device hang to stake position, to rubber pneumatic bag device 5 into
Row gas-flow closure prevents concrete to diffusion on the outside of the flexible cavity of stake side, and the gap between steel reinforcement cage and stake side wall is made to meet concrete
Protective layer thickness requirement；
(8) casting concrete in the hole of stake position, concrete initial set forms pile body, to pile tip grouting pipe 402, stake side pressure grouting pipe
302, which carry out pressure water, opens plug test, dredges mud jacking pipeline and opens end mud jacking device 401 and side mud jacking device 301；
(9) mud jacking is carried out to rubber pneumatic bag device 5, terminates mud jacking when mud jacking amount reaches the 90% of discreet value, prevents mud jacking
Rubber pneumatic bag failure of apparatus excessively is caused, and forms rigid boundary condition at Dual-layer steel loop 202；
(10) mud jacking is carried out to stake side, a side slurries is made radially to diffuse to form ideal column in lateral elasticity cavity 2
Slurry bubble terminates mud jacking when mud jacking amount reaches the 90% of discreet value；
(11) after the completion of stake side pressure grouting, rigid boundary condition is formed in 1 bottom of steel reinforcement cage；Mud jacking is carried out to stake end, so that
Stake end slurries are radial or diffuse to form ideal orbicule slurry bubble downwards, terminate mud jacking when mud jacking amount reaches the 90% of discreet value, such as
Shown in Fig. 5.
The pile foundation being perfused using present invention combination squeezing unit, can effectively improve the load-carrying properties of pile foundation, reduce stake
Base settling amount, is greatly lowered cost；The device of the invention simple structure, construction method are reasonable, easy to operate, securely and reliably,
It is economic and practical, it is suitble to install at the construction field (site), it is easy to promote and utilize.
Claims (5)
1. post jacking device is combined in a kind of pile end stake side, it is characterised in that: including steel reinforcement cage (1), be coated on steel reinforcement cage
(1) the lateral elasticity cavity (2) of lower outside, be fixed on steel reinforcement cage (1) for for lateral elasticity cavity (2) slip casting side
Portion's squeezing unit (3) and for for steel reinforcement cage (1) end mud jacking end squeezing unit (4), wherein the lateral elasticity cavity
(2) include elastic film (201) and be located at elastic film (201) upper/lower terminal and clamp the clad steel of the elastic film (201)
Ring (202), the bilayer steel loop (202) are fixedly connected by steel bar (203) with steel reinforcement cage (1), and in lateral elasticity cavity (2) and
Steel reinforcement cage forms gap between (1)；The steel reinforcement cage (1) is outside, elastic film (201) is interior, closes at Dual-layer steel loop (202)
It is arranged with respectively rubber pneumatic bag device (5), the rubber pneumatic bag device (5) includes air bag hose (501), connection air bag hose
(501) the hard steel pipe (502) and the bicyclic pipe clamp of high torque (503) at both ends is connected with air bag pressure on the hard steel pipe (502)
Slurry pipe (504), air bag madjack pipe (504) are fixed on steel reinforcement cage (1), are extended at the top of steel reinforcement cage (1).
2. post jacking device is combined in pile end stake according to claim 1 side, it is characterised in that: outside the steel reinforcement cage
Side is placed with several lateral elasticity cavitys (2) within the scope of full pile cutoff from bottom to top.
3. post jacking device is combined in pile end stake according to claim 1 side, it is characterised in that: the end mud jacking
The quantity of device (4) is at least two, is distributed on steel reinforcement cage (1), every one end squeezing unit (4) includes end mud jacking device
(401) it is fixed on the inside of steel reinforcement cage (1) with pile tip grouting pipe (402), the pile tip grouting pipe (402), extends to steel reinforcement cage (1) top
Portion.
4. post jacking device is combined in pile end stake according to claim 1 side, it is characterised in that: the side mud jacking
The quantity of device (3) is at least two, is distributed on steel reinforcement cage (1), each side squeezing unit (3) includes side mud jacking device
(301) and stake side pressure grouting pipe (302), this side pressure grouting pipe (302) upwardly extend supreme clad steel from steel reinforcement cage (1) exterior bottom
To infolding at ring (202), then along steel reinforcement cage (1) disposed inboard, until at the top of steel reinforcement cage (1)；Side mud jacking device (301) position
In lateral elasticity cavity (2).
5. the construction method of post jacking device, feature are combined in pile end stake according to claim 1 to 4 side
It is, includes the following steps:
(1) precast reinforced cage (1), the double-deck steel loop (202), elastic film (201), rubber pneumatic bag device (5), end squeezing unit
(4) and side squeezing unit (3)；
(2) the interior steel ring welding in the double-deck steel loop (202) is fixed on to the lower part of steel reinforcement cage (1) using steel bar (203), it is interior up and down
It is separated by a distance between steel loop；
(3) mounting end squeezing unit (4): pile tip grouting pipe (402) is symmetrically fixed on the inside of steel reinforcement cage (1), end mud jacking
Device (401) is located at the lower end of pile tip grouting pipe (402)；
(4) side squeezing unit (3) are installed: stake side pressure grouting pipe (302) are symmetrically fixed on steel reinforcement cage (1), stake side pressure grouting pipe
(302) from steel reinforcement cage (1), exterior bottom is upwardly extended from supreme interior steel loop to infolding, then along steel reinforcement cage (1) disposed inboard, until
At the top of steel reinforcement cage (1)；The stake side pressure grouting pipe (302) of bending part is connected by elbow；
(5) rubber pneumatic bag device (5) are installed: steel reinforcement cage (1) outside, up and down between steel loop, and close in up and down and covered at steel loop
If two rubber pneumatic bag devices (5), the air bag madjack pipe (504) of each rubber pneumatic bag device (5) prolongs upwards on the inside of steel reinforcement cage (1)
It extends at the top of steel reinforcement cage (1)；
(6) lateral elasticity cavity (2) are installed: the upper and lower ends of elastic film (201) is fixed in corresponding by outer steel loop
On steel loop, the assembly of pile end stake side combination post jacking device is completed；
(7) the pile end stake side assembled combination post jacking device is hung to stake position, rubber pneumatic bag device (5) is carried out
Gas-flow closure；
(8) casting concrete in the hole of stake position, after pile concrete initial set, to pile tip grouting pipe (402), stake side pressure grouting pipe
(302) it carries out pressure water and opens plug test, dredge mud jacking pipeline and open end mud jacking device (401) and side mud jacking device (301)；
(9) mud jacking is carried out to rubber pneumatic bag device (5), terminates mud jacking when mud jacking amount reaches the 90% of discreet value, and double up and down
Rigid boundary condition is formed at layer steel loop (202)；
(10) mud jacking is carried out to stake side, a side slurries is made radially to diffuse to form ideal column somaplasm in lateral elasticity cavity (2)
Bubble terminates mud jacking when mud jacking amount reaches the 90% of discreet value；
(11) after the completion of stake side pressure grouting, rigid boundary condition is formed in steel reinforcement cage (1) bottom；Mud jacking is carried out to stake end, so that stake
End slurries are radial or diffuse to form ideal sphere slurry bubble downwards, terminate mud jacking when mud jacking amount reaches the 90% of discreet value.
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| CN201710347157.5A CN107034877B (en) | 2017-05-17 | 2017-05-17 | Combine post jacking device and its construction method in pile end stake side |
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| CN201710347157.5A CN107034877B (en) | 2017-05-17 | 2017-05-17 | Combine post jacking device and its construction method in pile end stake side |
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| CN107034877B true CN107034877B (en) | 2019-06-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107916671A (en) * | 2017-12-06 | 2018-04-17 | 徐州迈斯特机械科技有限公司 | A kind of tunnel pile foundation pouring construction device |
| CN110144901A (en) * | 2019-05-22 | 2019-08-20 | 宁波大学 | A kind of prefabricated high-pressure gasbag isolation pilework and construction method with slip casting function |
| CN111021402B (en) * | 2019-11-11 | 2021-05-25 | 合肥学院 | Grouting type anchoring foundation with inner bag and outer bag and construction method thereof |
| CN110863488A (en) * | 2019-11-15 | 2020-03-06 | 广东地山基础工程有限公司 | Device for preventing concrete loss of perfusion pile and construction method |
| CN111778980A (en) * | 2020-07-31 | 2020-10-16 | 中建四局第一建筑工程有限公司 | Large-diameter pile grouting device |
| CN113684830B (en) * | 2021-07-16 | 2023-06-27 | 东南大学 | Root key type pile side post grouting device and method applied to rectangular hole digging pile |
| CN113756736B (en) * | 2021-08-30 | 2023-04-28 | 南京东土建设科技有限公司 | Pile foundation post grouting system based on drill slag recycling and construction method |
| CN113513054B (en) * | 2021-09-15 | 2021-11-30 | 江苏中云筑智慧运维研究院有限公司 | Pile foundation grouting pressure testing device and method based on optical fiber sensing |
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| JPH08209688A (en) * | 1995-02-02 | 1996-08-13 | Asahi Chem Ind Co Ltd | Ready-made pile having bag body |
| CN102587358A (en) * | 2012-03-27 | 2012-07-18 | 河海大学 | Technology of high polymer material post-grouting squeezed cast-in-place pile |
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| CN107034877A (en) | 2017-08-11 |
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