CN106930274B - A kind of a full set of cylinder rotatory boring castinplace pile construction method that reinforcing bar cage location is fixed - Google Patents
A kind of a full set of cylinder rotatory boring castinplace pile construction method that reinforcing bar cage location is fixed Download PDFInfo
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- CN106930274B CN106930274B CN201710193115.0A CN201710193115A CN106930274B CN 106930274 B CN106930274 B CN 106930274B CN 201710193115 A CN201710193115 A CN 201710193115A CN 106930274 B CN106930274 B CN 106930274B
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- steel
- drill bit
- flap valve
- steel bushing
- reinforcing bar
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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
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a full set of cylinder rotatory boring castinplace pile construction methods that a kind of reinforcing bar cage location is fixed, it is drilled in position to be onstructed to designed elevation using the drilling machine with flap valve drill bit, then flap valve drill bit is opened, it is sent vertically by the steel bushing central cavity steel reinforcement cage to the foot of hole, the opening of the steel bushing and flap valve drill bit is passed through to the foot of hole concrete perfusion finally by conduit, steel bushing is lifted up simultaneously, until the flap valve drill bit is extracted out of drilling.Pass through a full set of cylinder rotatory boring castinplace pile construction method that the reinforcing bar cage location of above-mentioned optimization design is fixed, change drilling and forming hole mode on the basis of full circle swinging drill construction technique, soil is taken in steel bushing without stopping boring, greatly speed up construction speed, and reduce pollution of the mud to construction site surrounding enviroment, furthermore pass through steel bushing in drill bit lifting process to foot of hole concrete perfusion, significantly control pile quality, improve the construction efficiency of bored concrete pile.
Description
Technical field
The present invention relates to the fixed a full set of cylinders of road and bridge, technical field of building construction more particularly to a kind of reinforcing bar cage location to return
Turn bored pile construction method.
Background technique
With the rapid development of China's modernization construction and the quickening of Development of China's Urbanization, elevated bridge and skyscraper
Build the important component in having become the big construction in China, developing on a large scale.A large amount of uses of bored concrete pile can guarantee as building work
Cheng Jianshe provides solid foundation, and the relevant technologies about bored concrete pile are also improved in succession and tend to be mature.However in practice of construction
In there is also much with society, the discordant factor of environment, cause project cost higher, construction operation intensity is big, the time is long
Etc. series of negative influence.Traditional filling pile construction engineering method is primarily present the problem of two aspects: first is that due to bottom hole sediment
Thicker, rising of steel cage and position are not fixed and keep the bearing capacity of pile lower, and design strength requirement is not achieved；Another party's face
Easily there is broken pile, bottleneck stake, hang foot stake etc. some quality problems piles.These long-span bridge girder constructions and super-high buildings make pile foundation
With more sensitive, pile base construction method has an important influence pile quality, construction speed, engineering cost etc..
Full circle swinging cast-in-situ bored pile be in recent years China engineering construction field frequently with a kind of pile foundation construction method,
The improvement of its construction method is one of the hot spot of current structure foundation engineering research.In filling pile construction control process, change
Drilling mode, a variety of pile modes combine, simplify the measures such as construction technology using more.Wherein, change pile mode measure (packet
Include hammering pile, vibration pile and blasting pile-forming etc.) it is mostly important one of the means of current improvement filling pile construction engineering method, it can
Effectively to omit the processes such as a large amount of earthwork excavation and fillings, support assembly and disassembly and the laying of precipitation facility, mechanized construction level is improved, thus real
The purpose of now controlling pile quality, improving construction operation environment, reduce settlement of foundation and obtain good economic benefit.
Existing engineering practice shows that using mud off pore-creating filling pile, there is casings and brill in the construction process
Machine separate operaton, prepare a variety of suitable mud be used to retaining wall, need constantly to stop to bore rush grab soil, reinforcing bar cage location is not fixed
It causes the adverse effects factor such as protective layer thickness deficiency, generates that stake holes deflection, drilling efficiency be low, complicated construction technique, construction
The quality problems such as increased costs and unreasonable construction.Especially when longer unfavorable by construction interference and pile body
When factor influences, the shift phenomenon of reinforcing bar cage location happens occasionally.Produce such as rising of steel cage, steel reinforcement cage verticality not
Foot, the steel reinforcement cage length of embedment in concrete are insufficient, steel reinforcement cage shifts to an earlier date stress generation moderate finite deformation etc. construction quality hidden danger and asks
Topic, leads to occur hanging some armored concrete problem stakes such as foot stake, reinforcing steel bars exposed, reduces the design strength of pile body and durable
Property.
Summary of the invention
To solve technical problem present in background technique, the present invention proposes that a kind of a full set of cylinder that reinforcing bar cage location is fixed returns
Turn bored pile construction method.
A kind of fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location proposed by the present invention, including it is following
Method:
S1, drilled in position to be onstructed to designed elevation using drilling machine, the drilling machine include the steel bushing that is vertically arranged and
It is mounted on the flap valve drill bit of steel bushing bottom；
S2, the flap valve of the flap valve drill bit in S1 is opened, passes through opening for cavity in the middle part of the steel bushing and flap valve drill bit
Mouth send steel reinforcement cage vertically to the foot of hole；
S3, the opening of the steel bushing and flap valve drill bit is passed through by conduit to the foot of hole concrete perfusion, together
When steel bushing is lifted up, until the flap valve drill bit from drilling in extract.
Preferably, in S1, the flap valve drill bit and the steel bushing are coaxially arranged.
Preferably, in S2, the steel reinforcement cage includes more stress main reinforcements, steel diaphragm, spiral hoops, and more stress main reinforcements are flat
Row is distributed in axially arrangement and around circumference, and spiral hoop is around more stress main reinforcement arrangements and fixes with stress main reinforcement, steel
Partition has ring structure, and steel diaphragm is equipped with multiple through-holes passed through for stress main reinforcement.
Preferably, the steel reinforcement cage include along stress main reinforcement length direction arrangement multiple steel diaphragms, two neighboring steel every
The distance between plate is not more than 4 meters；Preferably, the internal diameter of the steel diaphragm is D1 and outer diameter is D2, D1/D2 >=70%.
Preferably, in S2, before steel reinforcement cage is put into drilling, the residual body refuse of foot of hole is cleared up.
Preferably, in S2, foot of hole is cleared up by introducing water to foot of hole and mud being discharged.
Preferably, the conduit pipe extended in steel bushing side wall equipped with vertical direction, interior be equipped with of flap valve drill bit are led with described
The apopore of aquaporin connection.
Preferably, in S2, the relative density A of the mud of foot of hole discharge is detected, as A≤1.1,
Stop cleaning.
Preferably, flap valve drill bit is equipped with wolf's fang protrusion far from steel bushing one end.
Preferably, in S3, during steel bushing is promoted, driving steel bushing is reversely rotated.
In the present invention, the fixed a full set of cylinder rotatory boring castinplace pile construction method of the reinforcing bar cage location proposed, using tool
There is the drilling machine of flap valve drill bit to drill in position to be onstructed to designed elevation, then opens the flap valve of flap valve drill bit, by described
The opening of cavity and flap valve drill bit in the middle part of steel bushing send steel reinforcement cage vertically to the foot of hole, passes through finally by conduit
Steel bushing is lifted up by the opening of the steel bushing and flap valve drill bit to the foot of hole concrete perfusion, until
The flap valve drill bit is extracted out of drilling.Pass through a full set of cylinder Rotary drilling perfusion that the reinforcing bar cage location of above-mentioned optimization design is fixed
Pile construction method changes drilling and forming hole mode on the basis of existing full circle swinging drill construction technique, bores without stopping from steel bushing
In take soil, greatly speed up construction speed, and reduce pollution of the mud to construction site surrounding enviroment, furthermore promoted in drill bit
The construction efficiency of bored concrete pile is improved to foot of hole concrete perfusion, significantly control pile quality by steel bushing in journey.
Detailed description of the invention
Fig. 1 is a kind of stream of the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location proposed by the present invention
Cheng Tu.
Fig. 2 is a kind of brill of the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location proposed by the present invention
Head pierces the structural schematic diagram in drilling.
Fig. 3 is a kind of steel of the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location proposed by the present invention
The structural schematic diagram of the steel diaphragm of muscle cage.
Specific embodiment
As shown in Figures 1 to 3, Fig. 1 is a kind of fixed a full set of cylinder Rotary drilling perfusion of reinforcing bar cage location proposed by the present invention
The flow chart of pile construction method, Fig. 2 are a kind of fixed a full set of cylinder rotatory boring castinplace pile of reinforcing bar cage location proposed by the present invention
The drill bit of construction method pierces the structural schematic diagram in drilling, and Fig. 3 is a kind of the complete of reinforcing bar cage location fixation proposed by the present invention
The structural schematic diagram of the steel diaphragm of the steel reinforcement cage of sleeve rotatory boring castinplace pile construction method.
Referring to figs. 1 to 3, a kind of a full set of cylinder rotatory boring castinplace pile construction party that reinforcing bar cage location is fixed proposed by the present invention
Method, including the following steps:
S1, it is drilled in position to be onstructed to designed elevation using drilling machine, the drilling machine includes 1 He of steel bushing being vertically arranged
It is mounted on the flap valve drill bit 2 of 1 bottom of steel bushing；
S2, the flap valve of the flap valve drill bit 2 in S1 is opened, passes through the cavity at 1 middle part of steel bushing and flap valve drill bit 2
Opening is sent steel reinforcement cage vertically to the foot of hole；
S3, the opening of the steel bushing 1 and flap valve drill bit 2 is passed through by conduit to the foot of hole concrete perfusion,
Steel bushing 1 is lifted up simultaneously, until the flap valve drill bit 2 is extracted out of drilling.
In the present embodiment, the fixed a full set of cylinder rotatory boring castinplace pile construction method of the reinforcing bar cage location proposed, is adopted
It is drilled in position to be onstructed to designed elevation with the drilling machine with flap valve drill bit 2, then the flap valve of flap valve drill bit 2 is opened, is led to
The opening of the cavity and flap valve drill bit 2 of crossing 1 middle part of steel bushing send steel reinforcement cage vertically to the foot of hole, finally by
Conduit passes through the opening of the steel bushing 1 and flap valve drill bit 2 to the foot of hole concrete perfusion, at the same by steel bushing 1 to
Upper promotion, until the flap valve drill bit 2 is extracted out of drilling.Pass through a full set of cylinder that the reinforcing bar cage location of above-mentioned optimization design is fixed
Rotatory boring castinplace pile construction method changes drilling and forming hole mode on the basis of existing full circle swinging drill construction technique, is not necessarily to
Stop boring and take soil in steel bushing 1, greatly speeds up construction speed, and reduce pollution of the mud to construction site surrounding enviroment, this
Bored concrete pile is improved to foot of hole concrete perfusion, significantly control pile quality by steel bushing 1 in external drill bit lifting process
Construction efficiency.
The specific work process of the fixed a full set of cylinder rotatory boring castinplace pile construction method of the reinforcing bar cage location of the present embodiment
In, previously according to design drawing requirement, position the position of cast-in-situ bored pile；In S1, steel bushing is sling with crawler crane at stake position
Cylinder 1, and the flap valve drill bit 2 of 1 lower end of steel bushing is closed, and slowly puts down steel bushing 1 and steel flap valve drill bit 2 behind align piles position again
Assembly keeps the assembly vertical with soil body surface, then drive steel bushing 1 drive flap valve drill bit 2 rotate, make assembly by
Gradually sink, in the assembly sinking watching, guarantees that hole location is accurate and gradient；In S2, sunk down into the assembly
When designed elevation, steel bushing 1 is rotated backward, allows the assembly to be promoted to away from bottom hole preset height 400mm, opens flap valve drill bit
2 flap valve hangs steel reinforcement cage using crawler belt；In S3, conduit is installed, and be perfused by steel bushing 1 to foot of hole from conduit
Concrete, in filling process, while and be lifted up steel bushing 1, until casting complete.
In S1, in the specific embodiment of drilling machine, the flap valve drill bit 2 and the steel bushing 1 are coaxially arranged, guarantee
Boring work is stablized.
In the specific design method of flap valve drill bit 2, the flap valve of flap valve drill bit 2 is mutually twisted in boring procedure, and flap valve bores
First 2 are equipped with wolf's fang protrusion far from 1 one end of steel bushing, can adapt to drilling through for competent bed, greatly improve its boring work efficiency.
In S2, in the specific design of steel reinforcement cage, the steel reinforcement cage includes more stress main reinforcements 3, steel diaphragm 4, spiral
Hoop 5, more stress main reinforcements 3 are parallel to axial arrangement and are distributed around circumference, and spiral hoop 5 surrounds more 3 cloth of stress main reinforcement
It sets and fixed with stress main reinforcement 3, steel diaphragm 4 has ring structure, and steel diaphragm 4 leads to equipped with multiple for what stress main reinforcement 3 passed through
Hole during concrete perfusion, guarantees that the position stabilization of stress main reinforcement 3 does not deviate, meets stress by the way that steel diaphragm 4 is arranged
While the verticality of main reinforcement 3, the protective layer thickness outside stress main reinforcement 3 ensure that；Further, the steel reinforcement cage includes edge
Multiple steel diaphragms 4 of 3 length direction of stress main reinforcement arrangement, the distance between two neighboring steel diaphragm 4 are not more than 4 meters, such shape
At steel reinforcement cage both can satisfy the requirement of cover to reinforcement, the globality of pile body can also be increased, greatly improve pile body
Bearing capacity and anti seismic efficiency.
In the specific design of steel diaphragm 4, the internal diameter of the steel diaphragm 4 is D1 and outer diameter is D2, D1/D2 >=70%,
There are the concrete pouring hole for being not less than 70% steel diaphragm, 4 diameter at the center of steel diaphragm 4, steel diaphragm 4 had both been alleviated in this way
Quality has also consolidated the position of reinforcing bar, ensure that the construction quality of pile body.
In other specific embodiments, before steel reinforcement cage is put into drilling, the residual body refuse of foot of hole is carried out
Cleaning guarantees later period pouring quality；In a specific embodiment, in S2, by introducing water to foot of hole and mud being discharged
Foot of hole is cleared up, specifically, in the conduit pipe that 1 side wall of steel bushing extends equipped with vertical direction, flap valve drill bit 2
Equipped with the apopore being connected to the conduit pipe, bottom hole is cleared up using jetting device, in order to guarantee cleaning effect,
In scale removal process, the relative density A of the mud of foot of hole discharge is detected, as A≤1.1, that is, thinks borehole cleaning
Qualification stops cleaning.
In S3, during steel bushing 1 is promoted, driving steel bushing 1 is reversely rotated；Specifically, in filling process,
On the one hand it rotates backward and extracts steel bushing 1 upwards, on the other hand by conduit pipe and apopore jetting, utilize the anti-of water punching
Active force accelerates the promotion speed of steel bushing 1, while being also beneficial to further borehole cleaning, ensure that the environment of underwater concreting
Quality.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location, which is characterized in that including following side
Method:
S1, it is drilled in position to be onstructed to designed elevation using drilling machine, the drilling machine includes the steel bushing (1) being vertically arranged and peace
Flap valve drill bit (2) mounted in steel bushing (1) bottom；
S2, the flap valve of the flap valve drill bit (2) in S1 is opened, passes through the cavity and flap valve drill bit (2) in the middle part of the steel bushing (1)
Opening steel reinforcement cage is sent vertically to the foot of hole；
S3, the opening of the steel bushing (1) and flap valve drill bit (2) is passed through by conduit to the foot of hole concrete perfusion,
Steel bushing (1) is lifted up simultaneously, until the flap valve drill bit (2) is extracted out of drilling；
In S2, the steel reinforcement cage includes more stress main reinforcements (3), steel diaphragm (4), spiral hoop (5), more stress main reinforcements (3)
Be parallel to axial arrangement and be distributed around circumference, spiral hoop (5) around more stress main reinforcements (3) arrangements and with stress main reinforcement
(3) fixed, steel diaphragm (4) has ring structure, and steel diaphragm (4) is equipped with multiple through-holes passed through for stress main reinforcement (3).
2. the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location according to claim 1, feature
It is, in S1, the flap valve drill bit (2) and the steel bushing (1) are coaxially arranged.
3. the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location according to claim 1, feature
It is, the steel reinforcement cage includes multiple steel diaphragms (4) along stress main reinforcement (3) length direction arrangement, two neighboring steel diaphragm (4)
The distance between be not more than 4 meters；Preferably, the internal diameter of the steel diaphragm (4) is D1 and outer diameter is D2, D1/D2 >=70%.
4. the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location according to claim 1, feature
It is, in S2, before steel reinforcement cage is put into drilling, the residual body refuse of foot of hole is cleared up.
5. the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location according to claim 4, feature
It is, in S2, foot of hole is cleared up by introducing water to foot of hole and mud being discharged.
6. the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location according to claim 5, feature
It is, the conduit pipe extended in steel bushing (1) side wall equipped with vertical direction, is equipped in flap valve drill bit (2) logical with the water guide
The apopore of road connection.
7. the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location according to claim 5, feature
It is, in S2, the relative density A of the mud of foot of hole discharge is detected, as A≤1.1, stops cleaning.
8. the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location according to claim 1, feature
It is, flap valve drill bit (2) is equipped with wolf's fang protrusion far from steel bushing (1) one end.
9. the fixed a full set of cylinder rotatory boring castinplace pile construction method of reinforcing bar cage location according to claim 1, feature
It is, in S3, during steel bushing (1) is promoted, driving steel bushing (1) is reversely rotated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193115.0A CN106930274B (en) | 2017-03-28 | 2017-03-28 | A kind of a full set of cylinder rotatory boring castinplace pile construction method that reinforcing bar cage location is fixed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193115.0A CN106930274B (en) | 2017-03-28 | 2017-03-28 | A kind of a full set of cylinder rotatory boring castinplace pile construction method that reinforcing bar cage location is fixed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106930274A CN106930274A (en) | 2017-07-07 |
| CN106930274B true CN106930274B (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710193115.0A Expired - Fee Related CN106930274B (en) | 2017-03-28 | 2017-03-28 | A kind of a full set of cylinder rotatory boring castinplace pile construction method that reinforcing bar cage location is fixed |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316286B (en) * | 2018-03-28 | 2020-04-21 | 中交一公局集团有限公司 | Cast-in-situ bored pile construction process based on complex geological hydrological condition |
| CN112281823B (en) * | 2020-10-12 | 2022-02-18 | 赣杰建设集团有限责任公司 | Laminated pouring type concrete pile and pouring process thereof |
| CN117738167B (en) * | 2024-02-18 | 2024-05-10 | 中铁建工集团有限公司 | Construction device and construction process for deep foundation pit supporting structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201649074U (en) * | 2010-01-14 | 2010-11-24 | 孔超 | Pile-forming device with valve pile shoe rectangular immersed tube concrete cast-in-place pile |
| CN203174597U (en) * | 2013-01-15 | 2013-09-04 | 五冶集团上海有限公司 | Flap type pile point of tube-sinking cast-in-situ pile |
| CN105780763A (en) * | 2015-12-08 | 2016-07-20 | 河南锦源基础工程有限公司 | Construction method of medium-hole vibrating casing wall protection type long spiral cast-in-situ bored pile |
-
2017
- 2017-03-28 CN CN201710193115.0A patent/CN106930274B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201649074U (en) * | 2010-01-14 | 2010-11-24 | 孔超 | Pile-forming device with valve pile shoe rectangular immersed tube concrete cast-in-place pile |
| CN203174597U (en) * | 2013-01-15 | 2013-09-04 | 五冶集团上海有限公司 | Flap type pile point of tube-sinking cast-in-situ pile |
| CN105780763A (en) * | 2015-12-08 | 2016-07-20 | 河南锦源基础工程有限公司 | Construction method of medium-hole vibrating casing wall protection type long spiral cast-in-situ bored pile |
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| CN106930274A (en) | 2017-07-07 |
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