CN104452742A - Long twist internal hole drilling and pressure pumping combined type reinforced concrete sheet pile - Google Patents

Long twist internal hole drilling and pressure pumping combined type reinforced concrete sheet pile Download PDF

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Publication number
CN104452742A
CN104452742A CN201410632309.2A CN201410632309A CN104452742A CN 104452742 A CN104452742 A CN 104452742A CN 201410632309 A CN201410632309 A CN 201410632309A CN 104452742 A CN104452742 A CN 104452742A
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CN
China
Prior art keywords
concrete
sheet pile
reinforced concrete
pile
endoporus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410632309.2A
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Chinese (zh)
Inventor
夏雄
先礼琼
吴炎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU DINGDA BUILDING NEW TECHNOLOGY Co Ltd
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JIANGSU DINGDA BUILDING NEW TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGSU DINGDA BUILDING NEW TECHNOLOGY Co Ltd filed Critical JIANGSU DINGDA BUILDING NEW TECHNOLOGY Co Ltd
Priority to CN201410632309.2A priority Critical patent/CN104452742A/en
Publication of CN104452742A publication Critical patent/CN104452742A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/02Sheet piles or sheet pile bulkheads

Abstract

The invention discloses a long twist internal hole drilling and pressure pumping combined type reinforced concrete sheet pile. The sheet pile is composed of four long twist internal hole drilling and pressure pumping reinforced concrete bored pile bodies. Firstly, a long twist drill is used for drilling a hole, after hole depth reaches design depth, a concrete pump is started to convey concrete to the underground position through core boring, concrete conveying and drill lifting are carried out at the same time until pouring is completed, meanwhile, three adjacent holes are drilled, grouting is carried out, finally, a reinforcement cage is placed in plain concrete in the four holes through self weight and a pressurization tool, and a sheet pile structure is formed. The sheet pile is a novel foundation pit supporting structure, and is fast in construction speed and high in efficiency, no vibration is generated by counter bores, noise and slurry discharge are avoided, hole shrinkage is reduced, the rigidity of a supporting body is enhanced, pile forming quality is guaranteed, energy saving and environmental protection are achieved, and the soil retaining function is achieved in the supporting process.

Description

Long screw auger endoporus pump pressure Combined reinforced concrete sheet pile
Technical field
The present invention relates to technical field, especially a kind of long screw auger endoporus pump pressure Combined reinforced concrete sheet pile.
Background technology
In prior art, common long auger pump pressure in pipe castinplace pile is by full screw earth auger, the construction system of concrete pump and forced concrete mixer composition, be widely used in pile foundation construction, its sequence of construction is: driller insertion, be bored into predetermined absolute altitude, concrete in advance, drops in concrete pump hopper by chute by the concrete be stirred, and starts concrete pump and will coagulate soil by feed-line as drilling rod core pipe, brill is carried on pumping of concrete limit, limit, until earth's surface pile.Long auger pump pressure in pipe perfusion piling method is that a kind of speed of application is fast, and the stake of wide adaptability, pore-forming penetration capacity is strong, and can penetrate and answer soil layer, such as layer of sand, gravel layer and material footpath are not more than the boulder bed of 60mm.
In base pit engineering, the appropriate design of retaining design is the problem of core the most, and this system should play the effect of gear soil, prevents the outer soil erosion of foundation ditch again, to make around foundation ditch surface settlement and control of horizontal displacement within permissible range.The bracing of foundation pit pattern adopted in current engineering mainly adopts steel sheet pile, reinforced concrete sheet pile, bored pile barricade, casing bitten pile barricade, diaphragm wall, Deep-stirred Soil-cement Gravity Retaining Wall, the stake of SMW (PCMW) engineering method, curtain with rotary jet grouting piles wall, pile-anchor system, soil nail wall and composite soil nailing wall etc.These structural systems ensure that the engineering support that pile foundation is good to a certain extent, but engineering material consumption is large, and the engineering construction cycle is longer, and environment pollution is serious, and make under the overall situation of energy-saving and emission-reduction, various support technology all requires further improvement.Particularly pore-creating filling pile, the mud produced in work progress, not only contaminated environment, difficult treatment and destroy the smooth of job site, improves cost.Long screw auger endoporus pump pressure reinforced concrete sheet pile applies in pattern foundation pit supporting structure, can play the effect of gear soil, also energy-conserving and environment-protective, decreasing pollution.
Summary of the invention
The technical problem to be solved in the present invention is: for overcoming above-mentioned Problems existing, the common bored pile mainly bearing vertical load in Foundation Design is improved, a kind of long screw auger endoporus pump pressure Combined reinforced concrete sheet pile is provided, and 4 piles are combined, obtain a kind of novel foundation pit supporting pile build formula.
The technical solution adopted for the present invention to solve the technical problems is: a kind of long screw auger endoporus pump pressure Combined reinforced concrete sheet pile, comprise sheet pile body, described sheet pile body is combined by the long screw auger endoporus pump pressure reinforced concrete sheet pile that four have overlapped mutually, is placed with reinforcing cage in described reinforced concrete pile.
Construction process is as follows:
A, first driller insertion, drill bit align piles site, aperture, two ends 600mm, middle aperture 400mm;
B, rig start, and form the loosened soil of 200mm after drill bit arrives design elevation simultaneously;
C, the compression pump opened in long spire transport power head, be pressurized to 8 ~ 12MPa, open one way valve;
After d, valve open, concrete placement vehicle is pumped to 6 ~ 8MPa, and concrete perfusion adds retarding agent, keeps drill bit 0.3 ~ 0.5m buried depth in concrete, formin concrete column;
E, then rig bore other end macropore, pump pressure formin concrete column, then mider hole is bored in telephone-moving, and pump pressure formin concrete column, adopts suitable retarding agent formula, ensures that in four holes, concrete mobility is more or less the same thus is easy to implanted reinforced bar cage;
F, last reinforcement cage hoisting are installed, and utilize deadweight and water booster system to sink in concrete, form reinforced concrete sheet pile;
G, 4 reinforced concrete sheet piles to be combined, obtain a kind of novel foundation pit supporting pile build formula.
Described reinforced concrete sheet pile bore mode is long screw auger boring.
Described reinforced concrete sheet pile grouting way is the grouting of endoporus pump pressure.
A kind of long screw auger endoporus pump pressure Combined reinforced concrete sheet pile of the present invention utilizes endoporus Concrete Pumping Technology to become four circular ports, chutable concrete endoporus pumping casting is portalled and is formed stake thin portion unit, four different-diameter stake holes are mutually engaged and form nearly I shape stake holes, I shape reinforcing cage is sunk in vibrations, and maintenance forms the board-like pile body of I shape.This technology can avoid the mud contamination of slurry drilled pile, can avoid the stress influence in major diameter hole, obtains comparatively large rigidity and less expensive engineering objective.Therefore both use endoporus Concrete Pumping Technology, form again a kind of novel space enclosing structure.
The invention has the beneficial effects as follows, a kind of long screw auger endoporus pump pressure Combined reinforced concrete sheet pile advantage of the present invention is:
1. be applicable to the soil body stratum such as sand, silt, clay, mucky soil.
2. be applicable to pattern foundation pit supporting structure degree of depth H≤9m.
3. speed of application is fast, efficiency is high, and counterbore does not produce vibration, noiselessness, avoids mud emission, reduces shrinkage cavity, strengthens prop rigidity, pile quality is secure, energy-conserving and environment-protective, and in supporting, the effect of retaining wall can be played, and the discharge of mud can be avoided.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is long screw auger hole structure schematic diagram of the present invention.
Fig. 2 is reinforced concrete sheet pile in the present invention.
Fig. 3 is foundation ditch plane of arrangement figure in the present invention.
1. pumping of concrete devices, 2. pile power set, 3. long screw auger core, 4. long screw drill rod, 5. one way valve, 6. Guan Liang, 7. reinforced concrete sheet pile in figure.
Detailed description of the invention
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
A kind of long screw auger endoporus pump pressure Combined reinforced concrete sheet pile as shown in Figure 1, Figure 2, Figure 3 shows, construction process is as follows:
A, first driller insertion, drill bit align piles site, aperture, two ends 600mm, middle aperture 400mm;
B, rig start, and form the loosened soil of 200mm after drill bit arrives design elevation simultaneously;
C, the compression pump opened in long spire transport power head, be pressurized to 8 ~ 12MPa, open one way valve;
After d, valve open, concrete placement vehicle is pumped to 6 ~ 8MPa, concrete perfusion, adds retarding agent and ensures longer flowing time, keep drill bit 0.3 ~ 0.5m buried depth in concrete, formin concrete column;
E, then rig bore other end macropore, pump pressure formin concrete column, mider hole is bored in telephone-moving again, pump pressure formin concrete column, adopt suitable retarding agent formula, ensure that in four holes, concrete mobility is more or less the same thus is easy to implanted reinforced bar cage, the formula of retarding agent will ensure that concrete mobility makes reinforcing cage place smoothly;
F, last reinforcement cage hoisting are installed, and utilize deadweight and water booster system to sink in concrete, form reinforced concrete sheet pile;
G, 4 reinforced concrete sheet piles to be combined, obtain a kind of novel foundation pit supporting pile build formula.
Large stake holes and little stake holes overlap 200mm, overlap 150mm between little stake holes, and the combined sheet pile length of formation is 1.1m (deduction timber pile 1/3 segmental arc), the wide 400mm in termination, the wide 250mm of web.Concrete is Superfluid state concrete, and intensity is C30.Muscle 16mm indulged by reinforcing bar, stirrup 8mm, simultaneously arranges Guan Liang on stake top, and hat beam dimensions length is the foundation ditch length of side, wide be 1.1m and high be 0.6m.
A kind of long screw auger endoporus pump pressure Combined reinforced concrete sheet pile of the present invention utilizes endoporus Concrete Pumping Technology to become four circular ports, chutable concrete endoporus pumping casting is portalled and is formed stake thin portion unit, four different-diameter stake holes are mutually engaged and form nearly I shape stake holes, I shape reinforcing cage is sunk in vibrations, and maintenance forms the board-like pile body of I shape.This technology can avoid the mud contamination of slurry drilled pile, can avoid the stress influence in major diameter hole, obtains comparatively large rigidity and less expensive engineering objective.Therefore both use endoporus Concrete Pumping Technology, form again a kind of novel space enclosing structure.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on manual, must determine its technical scope according to right.

Claims (3)

1. a long screw auger endoporus pump pressure Combined reinforced concrete sheet pile, it is characterized in that: comprise sheet pile body, described sheet pile body is combined by the long screw auger endoporus pump pressure reinforced concrete sheet pile that four have overlapped mutually, is placed with reinforcing cage in described reinforced concrete pile.
2. long screw auger endoporus pump pressure Combined reinforced concrete sheet pile according to claim 1, is characterized in that construction process is as follows:
A, first driller insertion, drill bit align piles site, aperture, two ends 600mm, middle aperture 400mm;
B, rig start, and form the loosened soil of 200mm after drill bit arrives design elevation simultaneously;
C, the compression pump opened in long spire transport power head, be pressurized to 8 ~ 12MPa, open one way valve;
After d, valve open, concrete placement vehicle is pumped to 6 ~ 8MPa, and concrete perfusion adds retarding agent, keeps drill bit 0.3 ~ 0.5m buried depth in concrete, formin concrete column;
E, then rig bore other end macropore, pump pressure formin concrete column, then mider hole is bored in telephone-moving, and pump pressure formin concrete column, adopts suitable retarding agent formula, ensures that in four holes, concrete mobility is more or less the same thus is easy to implanted reinforced bar cage;
F, last reinforcement cage hoisting are installed, and utilize deadweight and water booster system to sink in concrete, form reinforced concrete sheet pile;
G, 4 reinforced concrete sheet piles to be combined, obtain a kind of novel foundation pit supporting pile build formula.
3. long screw auger endoporus pump pressure Combined reinforced concrete sheet pile according to claim 1, it is characterized in that: utilize endoporus Concrete Pumping Technology to become four circular ports, chutable concrete endoporus pumping casting is portalled and is formed stake thin portion unit, four different-diameter stake holes are mutually engaged and form nearly I shape stake holes, I shape reinforcing cage is sunk in vibrations, and it is long screw auger boring that maintenance forms the board-like stake bore mode of I shape.
CN201410632309.2A 2014-11-11 2014-11-11 Long twist internal hole drilling and pressure pumping combined type reinforced concrete sheet pile Pending CN104452742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410632309.2A CN104452742A (en) 2014-11-11 2014-11-11 Long twist internal hole drilling and pressure pumping combined type reinforced concrete sheet pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410632309.2A CN104452742A (en) 2014-11-11 2014-11-11 Long twist internal hole drilling and pressure pumping combined type reinforced concrete sheet pile

Publications (1)

Publication Number Publication Date
CN104452742A true CN104452742A (en) 2015-03-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000080646A (en) * 1998-09-03 2000-03-21 Kajima Corp Interlocking cast-in-place pile
KR100394413B1 (en) * 2000-09-29 2003-08-21 씨.티.케이건설 주식회사 In-situ soil mixing pile by multi-auger machine and column wall set up method
KR20080076013A (en) * 2007-02-14 2008-08-20 주식회사 스마텍엔지니어링 Method for constructing pier unit having h-beam
CN101560765A (en) * 2008-04-18 2009-10-21 万勇 Underground continuous wall construction technique of multi-spindle long spiral drill pipe occluding pile
CN102605765A (en) * 2012-04-09 2012-07-25 常州市鼎达建筑新技术有限公司 Prestressed concrete supporting pile wall
CN102628267A (en) * 2012-04-20 2012-08-08 吴传清 Casing-less, long-spiral concrete secant pile construction method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000080646A (en) * 1998-09-03 2000-03-21 Kajima Corp Interlocking cast-in-place pile
KR100394413B1 (en) * 2000-09-29 2003-08-21 씨.티.케이건설 주식회사 In-situ soil mixing pile by multi-auger machine and column wall set up method
KR20080076013A (en) * 2007-02-14 2008-08-20 주식회사 스마텍엔지니어링 Method for constructing pier unit having h-beam
CN101560765A (en) * 2008-04-18 2009-10-21 万勇 Underground continuous wall construction technique of multi-spindle long spiral drill pipe occluding pile
CN102605765A (en) * 2012-04-09 2012-07-25 常州市鼎达建筑新技术有限公司 Prestressed concrete supporting pile wall
CN102628267A (en) * 2012-04-20 2012-08-08 吴传清 Casing-less, long-spiral concrete secant pile construction method

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Application publication date: 20150325

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