CN105649011A - Forming method for square pile hole - Google Patents

Forming method for square pile hole Download PDF

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Publication number
CN105649011A
CN105649011A CN201610017751.3A CN201610017751A CN105649011A CN 105649011 A CN105649011 A CN 105649011A CN 201610017751 A CN201610017751 A CN 201610017751A CN 105649011 A CN105649011 A CN 105649011A
Authority
CN
China
Prior art keywords
square
barrette
square pile
hole forming
square tube
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
CN201610017751.3A
Other languages
Chinese (zh)
Inventor
叶坤
雷斌
赵建国
李森
郑磊
杨静
洪明坚
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.)
Shenzhen Gongkan Geotechnical Group Co Ltd
Original Assignee
Shenzhen Gongkan Geotechnical Group 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 Shenzhen Gongkan Geotechnical Group Co Ltd filed Critical Shenzhen Gongkan Geotechnical Group Co Ltd
Priority to CN201610017751.3A priority Critical patent/CN105649011A/en
Publication of CN105649011A publication Critical patent/CN105649011A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/42Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E21B10/43Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/001Drilling a non circular hole

Abstract

The invention relates to the technical field of square pile holes, and discloses a forming method for a square pile hole. The forming method comprises the following construction methods that 1, trepanning is carried out, a square pile casing is put downwards, the lower end of the square pile casing penetrates a fill stratum and extends into a residual soil layer, and the upper end of the square pile casing extends out of the ground; 2, a round drill bit is utilized for carrying out hole guiding many times, a plurality of round holes are formed, the diameter of the round drill bit is consistent with the width of the square pile hole, the multiple round holes are sequentially connected in rows in the length direction of the square pile hole, and the extending length is consistent with the length of the square pile hole; and 3, a square drill bit is utilized for carrying out drilling from top to bottom, and the square pile hole is formed. The forming method for the square pile hole has the following beneficial effects that the forming speed of the square pile hole is high; the quality of the square pile hole is guaranteed; the construction cost is low, the construction speed is high, the single-machine comprehensive efficiency is high, and the mechanical construction cost is relatively low; and the construction site is clean, and field management is simplified.

Description

Barrette hole forming method
Technical field
The present invention relates to the technical field of square stake holes, particularly relate to barrette hole forming method.
Background technology
Rotary drilling rig is a kind of pile foundation construction equipment for pore-forming operation, along with greatly developing of domestic foundation engineering in recent years, rotary drilling rig with it efficiently, quick, environmental protection, hole quality be high etc., and advantage is widely used. Rotary drilling rig mainly utilizes unit head to drive drilling rod, and by drilling rod, the driving force of unit head and plus-pressure is transferred to drill bit and realizes the cutting to stratum and creep into.
At present, on market, the drill bit of rotary drilling rig is circle, is mainly used in the construction of cylinder stake holes, and so, when rotary drilling rig runs into and needs to construct square stake holes, the drill bit of rotary drilling rig is then difficult to meet instructions for use. Further, since the size reason of equipment, length and width are respectively less than to the square stake holes of 2m, subterranean continuous wall hydraulic grab also cannot be adopted to carry out construction operation.
Summary of the invention
It is an object of the invention to provide barrette forming method, it is intended to solve in prior art, it is difficult to the problem of the square stake holes of molding.
The present invention is achieved in that barrette hole forming method, including following construction procedure:
1), after the scene of square stake holes to be formed carries out stake position fixed point and stake machine puts in place, perforate also transfers square casing, and the lower end of described square casing, through fill stratum, extends to and remains in soil layer, and the top on ground is extended in the upper end of described square casing;
2), utilize circular bite repeatedly to draw hole in square casing, form multiple circular port extending to and remaining in soil layer, and the diameter of described circular bite is consistent with the width of square stake holes to be formed; Multiple described circular ports are in a row sequentially connected along the length direction of square stake holes to be formed and arrange, and the extending length of multiple described circular port is consistent with the length of square stake holes to be formed;
3), utilize square drill bit to creep into from top to bottom in described square casing, form square stake holes.
Compared with prior art, barrette hole forming method provided by the invention has the advantage that
1), barrette hole forming speed is fast;Perforate �� transfer square casing �� common rotary drilling rig circular bite draws hole �� square drill bit and creeps into and repair hole squarely stake holes, within three hours, can complete a square stake holes;
2), square stake holes quality is guaranteed; Drawing on the basis in hole at common rotary drilling rig circular bite, square drill bit creeps into from top to bottom and is shaped as square stake holes, has concurrently simultaneously and repaiies hole effect, it is ensured that all complete, the noresidues of square stake holes stake;
3), construction cost is low; Speed of application is fast, and unit overall efficiency is high, and mechanical execution cost is relatively low; Square diamond header structure is simple, it is easy to processing, produces and maintenance cost is low, good economy performance; Not using mud to circulate in work progress, what greatly reduce mud makes consumption and the outer freight volume of useless slurry waste residue, reduces construction cost;
4), construction site cleaning, field management simplify; Barrette hole forming method has lacked mud hole internal recycle, greatly reduces the daily management work such as waste mud storage, outward transport, and on-the-spot temporary road, equipment are put and can be become more orderly, and corresponding management link is simplified greatly.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view placing square casing after the perforate that the embodiment of the present invention provides in fill stratum;
Fig. 2 is that the circular bite that utilizes that the embodiment of the present invention provides draws the schematic perspective view one in hole;
Fig. 3 is that the circular bite that utilizes that the embodiment of the present invention provides draws the schematic perspective view two in hole;
Fig. 4 is the schematic perspective view utilizing square bit bore that the embodiment of the present invention provides;
Fig. 5 be the embodiment of the present invention provide utilize circular bite to draw hole after schematic top plan view;
Fig. 6 is the schematic perspective view of the square drill bit that the embodiment of the present invention provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with specific embodiment, the realization of the present invention is described in detail.
With reference to shown in Fig. 1��6, for preferred embodiment provided by the invention.
The barrette hole forming method that the present embodiment provides, is mainly used in molding length and width and is respectively less than the square stake holes 10 of 2m, and certainly, it can be used for the square stake holes 10 of other various sizes scope of molding.
Shown in Fig. 5, the barrette hole forming method that the present embodiment provides, including following construction procedure:
1) after, completing stake position fixed point and pile-forming machine perching at the scene needing the square stake holes 10 of molding, perforate also transfers square casing 11, the lower end of square casing 11, through fill stratum 2, extends to and remains in soil layer 3, and the top on ground is extended in the upper end of square casing 11;
2), utilize the circular bite 13 of rotary drilling rig repeatedly to draw hole in square casing 11, form multiple circular port 14 extending to and remaining in soil layer 3, and the diameter of circular bite 13 is consistent with the width of square stake holes 10 to be formed; Multiple circular ports 14 are in a row sequentially connected along the length direction of square stake holes 10 to be formed and arrange, and the development length of multiple circular port 14 is consistent with the length of square stake holes 10 to be formed;
3), on the basis of above-mentioned molding circular port 14, utilize square drill bit 12 to creep into from top to bottom in square casing 11, form square stake holes 10.
Above-mentioned barrette hole forming method has the advantage that
1), square stake holes 10 shaping speed is fast
Grope through site operation, establish the working procedure of a set of optimization, it may be assumed that the square casing 11 �� common rotary drilling rig circular bite 13 of perforate �� transfer draws hole �� square drill bit 12 and creeps into and repair hole squarely stake holes 10.For the square stake holes 10 of 2.0m �� 1.2m �� 15m (long �� wide �� deep), a square stake holes 10 within three hours, can be completed.
2), square stake holes 10 mass is guaranteed
Drawing on the basis in hole at common rotary drilling rig circular bite 13, square drill bit 12 creeps into from top to bottom and is shaped as square stake holes 10, has concurrently simultaneously and repaiies hole effect, it is ensured that square 10 week of stake holes is complete, noresidue.
3), construction cost is low
Speed of application is fast, and unit overall efficiency is high, and mechanical execution cost is relatively low; Square drill bit 12 simple in construction, it is easy to processing, produces and maintenance cost is low, good economy performance; Not using mud to circulate in work progress, what greatly reduce mud makes consumption and the outer freight volume of useless slurry waste residue, reduces construction cost.
4), construction site cleaning, field management simplify
Main manifestations is in the following areas: construction machinery kind is few, it is simple to construction management; Construction does not use mud to circulate, and scene is no longer muddy, and place is more cleaned, and site operation environment is greatly improved; Current earthwork outward transport is a big principal element of engineering constraint construction speed, especially difficult treatment transported outward especially by useless slurry waste residue, this square stake holes forming method has lacked mud hole internal recycle, greatly reduce the daily management work such as waste mud storage, outward transport, on-the-spot temporary road, equipment are put and can be become more orderly, and corresponding management link is simplified greatly.
Specifically, the overall dimensions of square casing 11 is slightly larger than the size of square stake holes 10 to be formed, and ensures through fill stratum 2, thus avoiding in the process of the square stake holes 10 of molding, the phenomenon of collapse hole occurs.
Construction procedure 2 above-mentioned) in, tangent connection between adjacent circular port 14, or, the diameter according to the length of square stake holes 10 to be formed and circular port 14, can also intersect overlap joint between adjacent circular port 14, specifically determine by being actually needed.
In the present embodiment, it is preferable that select circular bite 13 to draw hole for twice, form the circular port 14 of two overlap joints.
With reference to shown in Fig. 6, in the present embodiment, square drill bit 12 includes square tube 123, blade 126 and attachment structure, wherein, square tube 123 has the square cavities of lower ending opening, blade 126 extends layout along the periphery of square tube 123 lower end, and the lower end of blade 126 extends to the lower section of square tube 123, and attachment structure is then connected to the upper end of square tube 123. So, when needs utilize square drill bit 12 to creep into, the square attachment structure of drill bit 12 is connected with the drilling rod of rotary drilling rig, the plus-pressure utilizing the unit head of the automatic of drilling rod and rotary drilling rig is transferred to the blade 126 of square drill bit 12, and then, in the blade 126 of square drill bit 12 then square shaped casing 11, the soil layer 3 that remains cut as circular port 14 is cut, thus what complete square stake holes 10 repaiies wall molding.
Additionally, after square drill bit 12 has crept into from top to bottom, need to exit from bottom to top from square stake holes 10, in order to avoid when carrying brill, the hole wall of square stake holes 10 square shaped stake holes 10 damages, in the present embodiment, the lateral wall of square tube 123 is convexly equipped with prerotation vane 124, the outer surface of this prerotation vane 124 is plane, thus, when carrying brill, the outer surface of prerotation vane 124 is utilized to contact with the hole wall of square stake holes 10, avoid snapping in destruction hole wall in hole wall, and avoid the agent structure of square drill bit 12 to be worn, extend the service life of square drill bit 12.
Specifically, each lateral wall of square tube 123 is provided with multiple prerotation vane 124 and multiple prerotation vane 124 flush arrangement, in this manner it is ensured that square drill bit 12 is when mentioning, utilizes multiple prerotation vane 124 to realize multi-faceted guiding.
Additionally, the inclined shape of sidewall of prerotation vane 124, form inclined plane 125, and the direction that extends outwardly along the lateral wall of square tube 123, inclined plane 125 is by being in tilted layout inwardly outward, and whole prerotation vane 124 forms outer little interior big trapezoidal shape, so, when carrying brill, utilize being in tilted layout of prerotation vane 124 inclined plane 125, it is to avoid the inclined plane 125 of prerotation vane 124 is blocked with the hole wall of square stake holes 10.
In the present embodiment, the upper end of blade 126 is connected with the sidewall of square tube 123 by securing members such as bolts, so, after blade 126 weares and teares, then either directly through operation securing member, can carry out the replacing of blade 126.
In the present embodiment, in order to strengthen the structural strength of square tube 123, the inner chamber of square tube 123 is provided with interior reinforcement plate, this interior reinforcement plate is arranged between two sidewalls that square tube 123 is adjacent, and adjacent with square tube 123 respectively two sidewalls of the dual-side of interior reinforcement plate connect, thus enclosing formation Delta Region between interior reinforcement plate two sidewalls adjacent with square tube 123, so, due to square tube 123 squarely shape, thus needing to strengthen in layout four plate in the inner chamber of square tube 123, strengthen plate in utilizing and the structure of whole square tube 123 is played the effect of reinforcing.
Additionally, owing to square drill bit 12 is when creeping into or carry brill, mainly the prerotation vane 124 of square drill bit 12 contacts with the hole wall of square stake holes 10, and due to neutral bentonitic characteristic, the resistance of square shaped drill bit 12 is bigger, although under bigger plus-pressure, square drill bit 12 can complete to creep into, but the impact of the hole wall of square shaped stake holes 10 is bigger, even there will be the phenomenon of collapse hole, therefore, in practice, then need the width being directed to sheet 124 suitably to reduce. In the present embodiment, formation Delta Region is enclosed between two sidewalls that interior reinforcement plate is adjacent with square tube 123, so, the casting space of four corners in the inner chamber of square tube 123 can be strengthened, thus the width reducing prerotation vane 124 is arranged, save cost, and be conducive to improving workability and the efficiency of square drill bit 12.
Square drill bit 12, when creeping into, easily piles up earth in above-mentioned Delta Region, and, along with the intensification of drilling depth, after earth dense extrusion, bigger resistance can be formed, cause square drill bit 12 to creep into difficulty. In the present embodiment, the middle part of each interior reinforcement plate is formed with breach, this breach runs through inner surface and the outer surface of interior reinforcement plate, so, after Delta Region extrudes earth, the earth of Delta Region then can be expressed in the inner chamber of square tube 123 by breach, it is to avoid forms earth accumulation dense state in Delta Region, reduces the resistance that square drill bit 12 creeps into.
Specifically, for the earth extrusion being more convenient in Delta Region, the breach of interior reinforcement plate extends in bar shaped from top to bottom to be arranged, thus the direction coordinating square drill bit 12 to creep into, facilitates the earth in Delta Region to extrude.
Or, breach runs through upper end and the lower end of interior reinforcement plate, by interior reinforcement plate dimidiation; Or, breach is then formed in interior reinforcement plate, it is not necessary to run through upper end and the lower end of interior reinforcement plate, and concrete setting can depend on the needs.
In the present embodiment, attachment structure includes union joint 122, this union joint 122 is connected to the center of square tube 123 upper end, so, after union joint 122 is connected with the drilling rod of rotary drilling rig, ensure that the plus-pressure of the deadweight of drilling rod and the unit head of rotary drilling rig can act on the centre of square tube 123, so that square tube 123 uniform force, it is possible to achieve steadily creep into or carry brill.
In order to strengthen bonding strength and the steadiness of union joint 122 and square tube 123, in the present embodiment, being provided with upper reinforcing plate 121 on square tube 123, this upper reinforcing plate 121 is connected to the upper end of square tube 123 in erectting shape, and its side is connected with the lateral wall of union joint 122.
Concrete, the upper end of square tube 123 is provided with multiple upper reinforcing plate 121, and the plurality of upper reinforcing plate 121 is around union joint 122, and cyclization is arranged around shape. In the present embodiment, owing to square tube 123 is square-shaped, accordingly, union joint 122 is also square stake, and, square tube 123 is formed four upper reinforcing plates 121, and, that strengthens plate is arranged on square tube 123, and the diagonal along square tube 123 upper surface extends, and the side of reinforcement plate is then connected to the side of union joint 122.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.

Claims (10)

1. barrette hole forming method, it is characterised in that include following construction procedure:
1), after the scene of square stake holes to be formed carries out stake position fixed point and stake machine puts in place, perforate also transfers square casing, and the lower end of described square casing, through fill stratum, extends to and remains in soil layer, and the top on ground is extended in the upper end of described square casing;
2), utilize circular bite repeatedly to draw hole in square casing, form multiple circular port extending to and remaining in soil layer, and the diameter of described circular bite is consistent with the width of square stake holes to be formed; Multiple described circular ports are in a row sequentially connected along the length direction of square stake holes to be formed and arrange, and the extending length of multiple described circular port is consistent with the length of square stake holes to be formed;
3), utilize square drill bit to creep into from top to bottom in described square casing, form square stake holes.
2. barrette hole forming method as claimed in claim 1, it is characterised in that the overall dimensions of described square casing is more than the size of described square stake holes to be formed.
3. barrette hole forming method as claimed in claim 1, it is characterised in that in described construction procedure 2) in, the tangent connection of circular port adjacent after construction.
4. barrette hole forming method as claimed in claim 1, it is characterised in that in described construction procedure 2) in, circular port cross-lapping adjacent after construction.
5. the barrette hole forming method as described in any one of Claims 1-4, it is characterized in that, described square drill bit includes square tube, blade and attachment structure, described square tube has the square cavities of lower ending opening, described blade extends layout along the periphery of described square tube lower end, and the lower end of described blade extends to the lower section of described square tube, attachment structure is connected to the upper end of described square tube.
6. barrette hole forming method as claimed in claim 5, it is characterised in that being convexly equipped with prerotation vane on the lateral wall of described square tube, the outer surface of described prerotation vane is plane.
7. barrette hole forming method as claimed in claim 6, it is characterised in that the inclined shape of sidewall of described prerotation vane, forms inclined plane, and the direction that extends outwardly along the lateral wall of described square tube, described inclined plane by outer towards tilted.
8. barrette hole forming method as claimed in claim 5, it is characterized in that, the inner chamber of described square tube is provided with multiple interior reinforcement plate, described interior reinforcement version is arranged between two sidewalls that described square tube is adjacent, and two sides of described interior reinforcement plate are connected with two sidewalls of described square tube respectively, between described interior reinforcement plate and two sidewalls of described square tube, enclose formation Delta Region.
9. barrette hole forming method as claimed in claim 8, it is characterised in that being provided with breach in described interior reinforcement plate, described breach runs through inner surface and the outer surface of described interior reinforcement plate.
10. barrette hole forming method as claimed in claim 9, it is characterised in that the breach of described interior reinforcement plate extends in strip from top to bottom to be arranged.
CN201610017751.3A 2016-01-12 2016-01-12 Forming method for square pile hole Pending CN105649011A (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN106192995A (en) * 2016-07-11 2016-12-07 中铁上海工程局集团有限公司 A kind of apparatus for work about caisson mechanical hole building and construction method thereof
CN106801579A (en) * 2017-03-08 2017-06-06 李文新 A kind of arc square forming pile equipment of municipal civil engineering
CN107642084A (en) * 2017-09-21 2018-01-30 中国建筑土木建设有限公司 A kind of rectangle stake holes manufacturing process and building mortion
CN108426663A (en) * 2018-04-18 2018-08-21 山东科技大学 A kind of rectangle drilling hole stress monitoring device and monitoring method
CN108678661A (en) * 2018-03-22 2018-10-19 中交路桥北方工程有限公司 Rectangular friction pile forming hole method and the rectangular drill bit of pore-forming
CN110714460A (en) * 2019-07-26 2020-01-21 云南建投基础工程有限责任公司 Rectangular anti-slide pile mechanical pore-forming construction method capable of reducing filling coefficient
CN112796307A (en) * 2021-01-04 2021-05-14 成都欣皓地基基础工程有限责任公司 Square pile construction method of rotary drilling rig

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106192995A (en) * 2016-07-11 2016-12-07 中铁上海工程局集团有限公司 A kind of apparatus for work about caisson mechanical hole building and construction method thereof
CN106801579A (en) * 2017-03-08 2017-06-06 李文新 A kind of arc square forming pile equipment of municipal civil engineering
CN107642084A (en) * 2017-09-21 2018-01-30 中国建筑土木建设有限公司 A kind of rectangle stake holes manufacturing process and building mortion
CN108678661A (en) * 2018-03-22 2018-10-19 中交路桥北方工程有限公司 Rectangular friction pile forming hole method and the rectangular drill bit of pore-forming
CN108426663A (en) * 2018-04-18 2018-08-21 山东科技大学 A kind of rectangle drilling hole stress monitoring device and monitoring method
CN110714460A (en) * 2019-07-26 2020-01-21 云南建投基础工程有限责任公司 Rectangular anti-slide pile mechanical pore-forming construction method capable of reducing filling coefficient
CN110714460B (en) * 2019-07-26 2021-08-10 云南建投基础工程有限责任公司 Rectangular anti-slide pile mechanical pore-forming construction method capable of reducing filling coefficient
CN112796307A (en) * 2021-01-04 2021-05-14 成都欣皓地基基础工程有限责任公司 Square pile construction method of rotary drilling rig

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Application publication date: 20160608