CN100467724C - Method for making building engineering pile and apparatus used thereof - Google Patents
Method for making building engineering pile and apparatus used thereof Download PDFInfo
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- CN100467724C CN100467724C CNB2005100463540A CN200510046354A CN100467724C CN 100467724 C CN100467724 C CN 100467724C CN B2005100463540 A CNB2005100463540 A CN B2005100463540A CN 200510046354 A CN200510046354 A CN 200510046354A CN 100467724 C CN100467724 C CN 100467724C
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Abstract
The present invention belongs to the field of building engineering pile construction technology. The building engineering pile constructing process includes the following steps: 1. making prefabricated spiral concrete pile with middle core hole; 2. setting the core pulling tool inside the core hole; 3. fixing the pile cap to the core pulling tool and the upper end of the prefabricated spiral concrete pile; 4. hoisting and driving the pile cap to drill; and 5. grouting the outside of the prefabricated spiral concrete pile through the core hole. The apparatus for the construction includes prefabricated spiral concrete pile with middle core hole, core pulling tool inside the core hole and pile cap fixed to the core pulling tool and the upper end of the prefabricated spiral concrete pile. The present invention can suit for different soil qualities and has low engineering cost, simple construction and high reliability.
Description
Technical field
The invention belongs to civil works pile driving construction field, particularly a kind of preparation method of construction work stake and the device that is adopted.
Background technology
Adopt spirality R.C. stake system to insert in the soil abroad in the civil works by applying the moment of torsion rotation.This method is that prefabricated screw pile leans on powerful moment of torsion that stake is screwed in the stratum, because construction method determines this employing high-strength cement reinforcement fabrication technology complicated, the stake quantity of reinforcement is big and need steel to make spiral plate, and the end is scratched on the void, pile body also is to stir soil, all is lower than the intensity of undisturbed soil.Do not find this kind job practices at home as yet.
Be subjected to polluting the restriction city at home and seldom adopt the construction of hammering vibratory drilling method.The huge turnover operating expenses of static pressed pile equipment height, pile tube causes its cost height for satisfying the static pressure bulky equipment, can not compress into regard to this equipment and the more closely knit soil layer of the high-strength also helpless reply of stake, is difficult to guarantee the degree of depth, and smooth surface is unfavorable for performance stake side skin friction.The Superfluid state concrete augered pile, loosened soil is scratched at stake point place, and pile body has the soil of falling after rise, concrete amount is big, and it is many to involve equipment, builds interim agitator, rely on the concrete delivery pump pipe road to enter junction, auger unit head top, separate out the reinforcing cage that avales because of aggregate and be difficult to guarantee its position.Because difficult control Superfluid state concrete injection rate because of being mostly the excess waste, seems that on-the-spot untidy construction is uncivil.
Summary of the invention
The object of the present invention is to provide a kind of energy to adapt to various soil properties, guarantee the degree of depth, construction costs is cheap, the preparation method of the simple construction work stake of construction technology.
Another object of the present invention provides the special equipment that the preparation method of a kind of and above-mentioned construction work stake matches.
Purpose of the present invention can realize by following approach:
A kind of preparation method of construction work stake, can carry out successively as follows:
(A) make the spiral concrete precast pile that the middle part has cored hole;
(B) core that will have an apex point is pulled in the cored hole that tool is placed in the spiral concrete precast pile;
(C) to pull the upper end of tool and spiral concrete precast pile affixed with core respectively with pile cover;
(D) lifting, power source drives pile cover and spuds in;
(E) pull cored hole slip casting outside the spiral concrete precast pile of tool by core.
When constructing, after slip casting outside the spiral concrete precast pile, also can carry out contrary boring according to above-mentioned steps.
The equipment that preparation method adopted of above-mentioned construction work stake, it comprises: the middle part be furnished with cored hole the spiral concrete precast pile, be socketed on core in the cored hole and pull tool, pull the pile cover that the upper end of tool fixedly connects with described spiral concrete precast pile and core; The lower end that described core is pulled tool is provided with apex point; Described core is pulled the bottom of tool and is furnished with mouth spray.
Described apex point and core are pulled tool can be integral type, also can adopt split type.When adopting split-type structural, the top of described apex point and core are pulled the bottom socket of tool; The top of described apex point is furnished with fastening rope.
For improving drilling efficiency, as a kind of preferred version, the present invention also is furnished with the brill wing on described apex point; The described brill wing and apex point are coupling.Cored hole can adopt square, also can adopt other shape that makes things convenient for clamping certainly, such as, hexagon, octagon etc.
The present invention can adapt to various soil properties, guarantees the degree of depth, and construction costs is cheap, and construction technology is simple, good reliability.Band pressure injection slurries can fully stir with soil, stop drilling depth after reaching the degree of depth, can make by contrary brill and stir soil and wrap up in pile body with the more closely knit cloth-wrapper of slurry mixture, have greatly improved the frictional resistance of stake side.The end of stake is with mud jacking liquid to stir infiltration, and its scope is increased, and quite undisturbed soil is more closely knit, has improved the support force of stake.
Description of drawings
Below in conjunction with the described embodiment of accompanying drawing the present invention is described in further detail.
Fig. 1 adopts the overall structure figure of device for the present invention;
Fig. 2 adopts the end view drawing of spiral concrete precast pile in the device for the present invention;
The specific embodiment
As shown in the figure, a kind of preparation method of construction work stake, can carry out successively as follows:
(A) make the spiral concrete precast pile that the middle part has cored hole;
(B) core that will have an apex point is pulled in the cored hole that tool is placed in the spiral concrete precast pile;
(C) to pull the upper end of tool and spiral concrete precast pile affixed with core respectively with pile cover;
(D) lifting, the stake bit correction, power source drives pile cover and spuds in, and apex point breaks ground;
(E) pull cored hole slip casting outside the spiral concrete precast pile of tool by core;
(F) outside the spiral concrete precast pile, after the slip casting, carry out contrary boring again.
Above-mentioned spiral concrete precast pile contains steel fibre or synthetic fibers.
The equipment that preparation method adopted of construction work stake, it comprises: the middle part be furnished with cored hole 2 spiral concrete precast pile 1, be socketed on cores in the cored hole 2 and pull tool 3, pull the pile cover 4 that the upper end of tool 3 fixedly connects with described spiral concrete precast pile 1 and core; The lower end that described core is pulled tool 3 is provided with apex point 5; Described core is pulled the bottom of tool 3 and is furnished with mouth spray 6.Described apex point 5 is pulled tool 3 with core and be can be integral type.When adopting integral type, a special-shaped design form can be adopted in the bottom of spiral concrete precast pile 1.Described apex point 5 is pulled tool 3 with core and also be can be split type; When employing was split type, flush design form can be adopted in the bottom of spiral concrete precast pile 1, and the top of described apex point 5 and core are pulled the bottom socket of tool 3, and the top of described apex point 5 is furnished with fastening rope 7.Like this in case when the in bad order and bit bouncing of soil property occurring, just apex point 5 can be abandoned by unclamping fastening rope 7.For strengthening construction effect, on described apex point 5, can be furnished with the wing 8 of boring; The described brill wing 8 is coupling with apex point 5.Boring the wing 8 can be around bearing pin 3 rotation.When boring the wing 8, processing its length can be made the outer rim that is slightly larger than concrete precast pile 1 spiral.The present invention advances by the brill wing 8 of rotation basically like this.After arriving desired depth, the brill wing 8 and core are pulled tool 3 and just can be regained easily.As shown in Figure 1,10 for connecting slip casting high-voltage tube column cap.When needs slip casting, can be by being bridged on the high-voltage tube slip casting in core is pulled tool 3 that connects on the slip casting high-voltage tube column cap 10.11 is the flange dish, is used to connect rotary power head.12 for connecting the connecting reinforcement of pile cover 4 and spiral concrete precast pile 1.Pile cover 4 is pulled tool 3 by inserting mode and core and is fixedly connected.
Device involved in the present invention, when making, can arrange reinforcing cage or shaped steel by structure or structure design, for solving concrete fragility torsional fracture etc. when the ready-mixed concrete, mix the steel fibre or the synthetic fibers of optimum content, so just strengthen its impact-resistant abrasion-proof and improve greatly refusing to split toughness reinforcing anti-permeability strength.Because three-dimensional disorderly effectively stops aggregate to be separated out to distributing.Making can be adopted centrifugal extruding or self-compacting concrete moulding.Can open having at the construction field (site) or fixedly apex point shaped steel pull tool and pile cover fixedly connects.Utilize hoist engine that unit head and spiral concrete precast pile 1 are sling, after the correction, start unit head, through card locking device, pile cover is forced to reverse shaped steel and is pulled tool, drive the stake point, pile body rotation, controlled footage and rotating speed are when meeting than the very strong soil property of hardpan or viscosity, but the casting setting-out, thereby played the effect of the loosening lubricious soil layer of refinement.Through calculating when creeping into a certain degree of depth, casting mud jacking liquid just stirs the mixture it with soil when satisfying projected depth just to be screwed out mouth spray 6 be good, this moment is by hoist engine control stopping drilling depth, carry out contrary boring again, continue injection slurry, with regard to space between compressible pitch, increased the stake side skin friction like this, made the more slurries of apex point mix.Look engine request when shaped steel is pulled tool and can continue injection slurry when mentioning; protect the core hole after the proposition; but by purposes descending reinforcing cage or shaped steel; pourable concrete or insert shape steel tube with cored hole coupling; make the soil blocking pile stressed member; under ground portion is injection slurry not, waits to finish shape steel tube to be extracted out after the effect and reuses.
Case history I: according to geological conditions, designing requirement, status of equipment, the quantity in stock and the manufacturing speed of screw pile are selected flexibly, can carry out the pile extension operation.
Adopt Φ 400 spiral preformed piles, geological conditions is as follows: 0.8～1.8M is that plain fill (in close) 1.8～2.6M is that lam (in close) 2.6～5.1M is clay (plastic firmly), 5.1～5.8M medium sand (in close), 5.8～12M is that garden gravel (in close) is according to geologic report, the choosing stake is long to be the flush spiral preformed pile of 7M cored hole, and apex point is an open type.Drilling depth difficulty when getting into 2M during operation, drilling depth has bit bouncing phenomenon casting this moment setting-out situation to be greatly improved again, and drilling depth is more smooth, screws out the obvious water profit of soil property nature to split away off from pitch.When drilling depth 4/5, casting compressed water slurry liquid (proportioning 0.6:1 proportion 1.7g/cm
3) until slurries and soil revolve mix compound and return out from the aperture till, stop that drilling depth is contrary to bore the construction that can finish a pile in 2 minutes.Do test pile after 28 days and stop load 1500KN/14mm, wrap up in fabulously through excavating the outer cloth-wrapper of check stake, judge that through measuring artificial delineation in stake footpath and hammering situation its intensity is quite high, it is very strong that cloth-wrapper is wrapped up in power.Stake end place soil property obviously has the coagulation soil sample scope of a hard fast hard matter can reach 500cm.Stop sedimentation 500KN/14mm at contiguous 2M place without injection slurry Φ 400 spiral preformed pile (previous status) Φ 400 former worker's method screw piles, cost is 1600 yuan/m
3, bearing capacity 400KN/m
3, 1200 yuan/m of the required cost of this worker method
3, bearing capacity is up to 1600KN/m
3According to the close condition hammering precast square pile 30cm x 30cm of data.Stop load 1000kn/13.27mm.It seems that relatively the method is better than the hammering preformed pile.More be better than former worker's method screw pile.Though the compacted soil property of hammering.But this method is obviously improved working mechanism, the effect of stake buttressing effect is big, pile body becomes cloth-wrapper to wrap up in works very well intensity by slurries greatly not only to have played frictional force but also the shearing resistance effect is arranged with local soil type, and the oblique again diffusion of the normal pressure of the auger wing is big much larger than the frictional resistance diffusion in a big way, so its supporting capacity is higher than the stake of state same type, its superiority is apparent.
Case history II
The foundation ditch planar dimension is 110M x 60M, and former design is that 1.2M amounts to 278 with Φ 600 superfluidity auger boring pouring piles, center to center distance, and stake is long to be 15M, and capping beam (handle beam) is 400MM x 600MM.Cost is surplus in the of 100 ten thousand yuan, 90 tons of steel consumptions, 600 tons of cement.Change and adopt the flush spiral preformed pile of Φ 500 cored holes, the long 15M of stake, a stake number still is 278, the handle beam with shaped steel with the fastening connection of stake core pattern steel.550,000 yuan of total costs, 30 tons of steel consumptions, cement consumption are 230 tons.410 kilograms of synthetic fibers consumptions.Contrast economizes on the use of funds 45%, steel 66%, cement 62%.
Claims (10)
1, a kind of preparation method of construction work stake is characterized in that: can carry out successively as follows:
(A) make the spiral concrete precast pile that the middle part has cored hole;
(B) core that will have an apex point is pulled in the cored hole that tool is placed in the spiral concrete precast pile;
(C) to pull the upper end of tool and spiral concrete precast pile affixed with core respectively with pile cover;
(D) lifting, power source drives pile cover and spuds in;
(E) pull mouth spray slip casting outside the spiral concrete precast pile of tool bottom by core.
2, the preparation method of construction work stake according to claim 1 is characterized in that: after the slip casting, carry out contrary boring again outside the spiral concrete precast pile.
3, the preparation method of construction work stake according to claim 1 and 2 is characterized in that: the spiral concrete precast pile contains steel fibre or synthetic fibers.
4, the equipment that preparation method adopted of construction work stake according to claim 1 and 2, it is characterized in that, comprising: the middle part be furnished with cored hole (2) spiral concrete precast pile (1), be socketed on core in the cored hole (2) and pull tool (3), pull the pile cover (4) that the upper end of tool (3) fixedly connects with described spiral concrete precast pile (1) and core; The lower end that described core is pulled tool (3) is provided with apex point (5); Described core is pulled the bottom of tool (3) and is furnished with mouth spray (6).
5, the equipment that preparation method adopted of construction work stake according to claim 4 is characterized in that: it is integral type that described apex point (5) is pulled tool (3) with core.
6, the equipment that preparation method adopted of construction work stake according to claim 4 is characterized in that: described apex point (5) is pulled tool (3) for split type with core; The top of described apex point (5) and core are pulled the bottom socket of tool (3); The top of described apex point (5) is furnished with fastening rope (7).
7, the equipment that preparation method adopted of construction work stake according to claim 4 is characterized in that: be furnished with the brill wing (8) on described apex point (5); The described brill wing (8) is coupling with apex point (5).
8, the equipment that preparation method adopted of construction work stake according to claim 5 is characterized in that: be furnished with the brill wing (8) on described apex point (5); The described brill wing (8) is coupling with apex point (5).
9, the equipment that preparation method adopted of construction work stake according to claim 6 is characterized in that: be furnished with the brill wing (8) on described apex point (5); The described brill wing (8) is coupling with apex point (5).
10, the equipment that preparation method adopted of construction work stake according to claim 4 is characterized in that: described cored hole (2) is for square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100463540A CN100467724C (en) | 2005-04-30 | 2005-04-30 | Method for making building engineering pile and apparatus used thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100463540A CN100467724C (en) | 2005-04-30 | 2005-04-30 | Method for making building engineering pile and apparatus used thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1858363A CN1858363A (en) | 2006-11-08 |
| CN100467724C true CN100467724C (en) | 2009-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100463540A Expired - Fee Related CN100467724C (en) | 2005-04-30 | 2005-04-30 | Method for making building engineering pile and apparatus used thereof |
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| Country | Link |
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| CN (1) | CN100467724C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063308B (en) * | 2006-04-26 | 2012-05-23 | 王剑 | Manufacturing method of civil work enlarge stone piling and used device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2160680Y (en) * | 1993-02-16 | 1994-04-06 | 肖铁英 | Prefabricated screw pile |
| CN2389924Y (en) * | 1999-08-24 | 2000-08-02 | 陈日宏 | Screw concrete precast pile |
| JP2002081059A (en) * | 2000-06-20 | 2002-03-22 | Daido Concrete Co Ltd | Pile burying method and device therefor |
-
2005
- 2005-04-30 CN CNB2005100463540A patent/CN100467724C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2160680Y (en) * | 1993-02-16 | 1994-04-06 | 肖铁英 | Prefabricated screw pile |
| CN2389924Y (en) * | 1999-08-24 | 2000-08-02 | 陈日宏 | Screw concrete precast pile |
| JP2002081059A (en) * | 2000-06-20 | 2002-03-22 | Daido Concrete Co Ltd | Pile burying method and device therefor |
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| Publication number | Publication date |
|---|---|
| CN1858363A (en) | 2006-11-08 |
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Granted publication date: 20090311 Termination date: 20140430 |