CN202124855U - Rotary drilling prefabricate composite pile - Google Patents
Rotary drilling prefabricate composite pile Download PDFInfo
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- CN202124855U CN202124855U CN201120244857XU CN201120244857U CN202124855U CN 202124855 U CN202124855 U CN 202124855U CN 201120244857X U CN201120244857X U CN 201120244857XU CN 201120244857 U CN201120244857 U CN 201120244857U CN 202124855 U CN202124855 U CN 202124855U
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- rotary drilling
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Abstract
The utility model relates to a rotary drilling prefabricate composite pile which belongs to the technical field of a building foundation component and comprises a pile body and a pile tip, wherein the pile body is formed by splicing pile body units, connecting pieces are arranged on one end surface or two end surfaces of the pile body units at the same time, the bottom end of the pile body unit at the lowest end is connected with the pile tip, the pile tip is cone, and at least one blade which forms an acute angle with the horizontal cross section of the pile tip is arranged on the outer surface of the pile body; an expanding head type prefabricate composite pile is formed by arranging a spiral plate on the outer surface of the pile body, infusing outer wrapping slurry outside the pile body and infusing inner core slurry in the pile body, thereby greatly improving the carrying capacity of the pile and expanding the applied range of the prefabricate pile. The rotary drilling prefabricate composite pile has the characteristics of strong applicability, high operating efficiency, environmental protection and the like, and can be applied to foundations of engineering fields such as industrial and civil buildings, municipal administrations, bridge connections, railways, water conservancy projects, mines, ports and the like.
Description
Technical field
The utility model relates to the preformed pile of a kind of preformed pile, particularly a kind of rotary drilling.
Background technology
Use with normal in order to ensure building safety, structure design all will be considered bearing capacity of foundation slab and deformation behaviour thereof, under the situation that bearing capacity of foundation soil or sedimentation and deformation do not meet design requirement, need carry out that ground is artificial to be reinforced.The pile foundation conduct is a kind of artificial reinforcing means wherein, are widely used.Especially (, construction quality big like bearing capacity of single pile is easy to control, leveling peg or taper pile in designing requirement; And foundation pile receives vertical pressure, vertical uplift force and horizontal loading etc. simultaneously), execution conditions require under the situation of harsh day by day (short like the construction period, the construction plant is narrow and small, low noise does not disturb residents, do not have or less spoir etc.); And under the main trend of environmental protection, need that a kind of bearing capacity is relatively large, the pile foundation pattern of advantages such as the variation of pile angle, mechanization of building operation, construction machinery are flexible, convenient and quick construction, duration weak point, environmental protection.
Simultaneously; Present base pit engineering with in-site pouring concrete revetment pile supporting type; Because factors such as rate of penetration, pile body maintenance; Therefore construction period generally all requires longer, so tends to restrict total duration of this engineering, needs a kind of convenient and quick construction, pile body is prefabricated, support unit that can come into operation rapidly remedies the in-site pouring concrete revetment pile deficiency.
The utility model content
The purpose of the utility model provides a kind of rotary drilling prefabricating composite pile, and it is little to solve existing prefabricated pile capacity, and construction speed is slow, and inflexible technical problem of constructing and pile angle are limited, the problem of the not environmental protection of constructing.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of rotary drilling prefabricating composite pile; Comprise pile body and stake point, said pile body is formed by the continued access of pile body unit, is provided with connector simultaneously on an end face of said pile body unit or two end faces; Wherein the bottom of lowermost end pile body unit is connected with the stake point; Said stake point is taper, and said pile body external surface is provided with and the acutangulate blade of its horizontal slice, and said blade is at least a slice.
Said blade is helical form, flaabellum shape or colter shape, and along its axial continuous distributed or be interrupted distribution, its external diameter is 50mm～2500mm at the pile body external surface for it, and thickness is 5mm～500mm.
Said connector is flange, sleeve, positive left-hand thread, interior six sides, key, weld seam or above both combinations arbitrarily.
Said pile body is hollow steel pipe or reinforced concrete prefabricated pipe, and its cross section is annular or hollow polygon.
Offer injected hole or do not have injected hole on said pile body and/or the stake point.
The sharp external surface of said stake is provided with the blade that breaks ground.
The said device that breaks ground is straight rib, arc rib or spiral rib.
Said pile body outer filling have be perfused with in outsourcing slurry, the pile body inner core slurry or above both the combination.
Compared with prior art the utlity model has following characteristics and beneficial effect:
The utility model is through being provided with blade at the pile body external surface, and at pile body outer filling outsourcing slurry with pour into the inner core slurry within it, formed the compound preformed pile of expansion hair style, improved the supporting capacity of stake greatly, enlarged the range of application of preformed pile.
The utility model has improved the speed of stake precession through the device that breaks ground is set on the stake point, improved efficiency of construction.
Said each member of rotary drilling prefabricating composite pile of the utility model all can be distinguished the combination of simultaneously prefabricated back, has reduced the production cycle of preformed pile, thereby has reduced total construction period of engineering, has improved production efficiency.
The said rotary drilling prefabricating composite pile of the utility model can carry out flexible design and selection according to concrete geological conditions and upper load, and applicability is strong.
The utility model can vertically be constructed in work progress, and level is constructed or oblique construction, has increased the diversity of pile angle, has enlarged the scope of application of preformed pile.
The utility model does not have mud at work progress, no spoir, and noise is low, has improved construction environment, meets the novel construction theory of environmental protection.
The utility model can be widely used in foundations industrial and engineering fields such as civilian construction, municipal administration, bridge, railway, water conservancy, mine, harbour.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Fig. 1 is the utility model structural representation.
Fig. 2 is Figure 1A-sectional drawing embodiment of A place one.
Fig. 3 is Figure 1A-sectional drawing embodiment of A place two.
Fig. 4 is Figure 1A-sectional drawing embodiment of A place three.
Fig. 5 is blade embodiment one.
Fig. 6 is Fig. 5 vertical view.
Fig. 7 is blade embodiment two.
Fig. 8 is Fig. 7 vertical view.
Fig. 9 is blade embodiment three.
Figure 10 is blade embodiment four.
Figure 11 is blade embodiment five.
Figure 12 is blade embodiment six.
Figure 13 is blade embodiment seven.
Figure 14 is a nose part detail drawing.
Figure 15 is Fig. 9 B-B place sectional drawing.
Figure 16 is the connector detail drawing.
Figure 17 is Figure 11 C-C figure.
Figure 18 is the inside and outside all sketch mapes of slip casting of pile body.
Figure 19 is the device embodiment one that breaks ground.
Figure 20 is the device embodiment two that breaks ground.
Figure 21 is the device embodiment three that breaks ground.
Reference numeral: break ground device, the straight rib of 6.1-, 6.2-arc rib, 6.3-spiral rib, 7-inner core slurry, 8-outsourcing slurry, 9-of 1-pile body unit, 2-blade, 3-stake point, 4-injected hole, 5-connector, 6-smash native device.
The specific embodiment
Embodiment one is referring to Fig. 1, Fig. 2～shown in Figure 13, and a kind of rotary drilling prefabricating composite pile comprises pile body and stake point; Said pile body is formed by 1 continued access of pile body unit; Be provided with connector 5 simultaneously on an end face of said pile body unit 1 or two end faces, wherein the bottom of lowermost end pile body unit is connected with stake point 3, and said stake point 3 is taper; Said pile body external surface is provided with the blade that acutangulates (referring to shown in Figure 11) with its horizontal slice, and said blade is at least a slice.Said blade 2 is helical form, flaabellum shape or colter shape, and it axially distributes along it at the pile body external surface continuously or intermittently, and its external diameter is 50mm～2500mm, and thickness is 5mm～500mm.Referring to Fig. 5～Fig. 8.Fig. 5 and Fig. 6 are the shape distributions in the shape of a spiral of five flaabellum shape blades, and Fig. 7 and Fig. 8 are that three flaabellum shape blades are in spiral distribution.The external diameter of said blade is 50mm～1000mm, thickness of slab 10mm～50mm.Said connector also can be sleeve, positive left-hand thread, interior six sides, internal spline, weld seam or above both combinations arbitrarily.Fig. 9 is that single screw type blade is spaced apart on the pile body unit for said blade, and connector is a flange, is provided with in the flange bottom surface of low side pile body unit and smashes native device 9; What Figure 10 was different with Fig. 9 is that said blade is that two colter shape spirals distributions form; What Figure 11 was different with Figure 10 is that said blade is that two colter shapes distribute in same plane symmetry, and coincides each other and form; What Figure 12 was different with Figure 11 is that said blade is that two flaabellum shapes distribute in same plane symmetry, and coincides each other and form; Figure 13 is different with Figure 12 is that said blade is monolithic screw type blade and pile body unit blade that only distributes; Figure 16, Figure 17 and be depicted as the connector detail drawing; Wherein Figure 16 and Figure 17 are flange, its external diameter 50mm～1000mm; Thick 10mm～30mm, the flange internal diameter is identical with hollow steel pipe pile body internal diameter, and type of attachment is welding or mechanical connection between connector and the lowermost end pile body unit.
Said pile body is hollow steel pipe or reinforced concrete prefabricated pipe, and its cross section is annular or hollow polygon.The external diameter of said pile body is 32mm ~ 630mm, wall thickness 2.5mm ~ 32mm.Referring to Fig. 2～Fig. 4, shown in Figure 2 is hollow circle, and shown in Figure 3 is hollow regular hexagon, and shown in Figure 4 is hollow octagon.Offer injected hole 4 on said pile body and/or the stake point 3.Said injected hole 4 is circular, square, polygon or quincunx.
Said pile body outer filling have be perfused with in outsourcing slurry 8, the pile body inner core slurry 7 or above both the combination.Referring to shown in Figure 13, said slurry is special cement paste, cement+Admixture, concrete or steel concrete.The sharp external surface of said stake is arranged at intervals with the device 6 that breaks ground.Referring to Figure 14 and Figure 15, the tip that said stake point processes for steel material is circular cone or pyramid, when the stake point is circular cone, needs the device that breaks ground is set, and the said device that breaks ground is that steel material processes; The tip and the type of attachment of breaking ground between the device are welding or mechanical connection.The said device 6 of breaking ground for straight rib 6.1 referring to Figure 21, arc rib 6.2 referring to Figure 19 or spiral rib 6.3 referring to Figure 20.
The job practices of described rotary drilling prefabricating composite pile is characterized in that: step is following:
After the said step 5, the outer soil body internal pressure of rotary drilling prefabricating composite pile is poured into the outsourcing slurry or/and pour into the inner core slurry within it, and aforesaid operations carries out respectively or simultaneously.
Claims (8)
1. rotary drilling prefabricating composite pile; Comprise pile body and stake point, said pile body is formed by pile body unit (1) continued access, it is characterized in that: be provided with connector (5) simultaneously on an end face of said pile body unit (1) or two end faces; Wherein the bottom of lowermost end pile body unit is connected with stake point (3); Said stake point (3) is taper, and said pile body external surface is provided with and the acutangulate blade of its horizontal slice (2), and said blade (2) is at least a slice.
2. rotary drilling prefabricating composite pile according to claim 1; It is characterized in that: said blade (2) is helical form, flaabellum shape or colter shape; Along its axial continuous distributed or be interrupted distribution, its external diameter is 50mm～2500mm at the pile body external surface for it, and thickness is 5mm～500mm.
3. rotary drilling prefabricating composite pile according to claim 1 is characterized in that: said connector is flange, sleeve, positive left-hand thread, interior six sides, key, weld seam or above both combinations arbitrarily.
4. rotary drilling prefabricating composite pile according to claim 1 is characterized in that: said pile body is hollow steel pipe or reinforced concrete prefabricated pipe, and its cross section is annular or hollow polygon.
5. rotary drilling prefabricating composite pile according to claim 1 is characterized in that: offer injected hole (4) or do not have injected hole on said pile body and/or the stake point (3).
6. rotary drilling prefabricating composite pile according to claim 1 is characterized in that: the sharp external surface of said stake is provided with the device that breaks ground (6).
7. rotary drilling prefabricating composite pile according to claim 1 is characterized in that: the said device that breaks ground (6) is straight rib (6.1), arc rib (6.2) or spiral rib (6.3).
8. rotary drilling prefabricating composite pile according to claim 1 is characterized in that: said pile body outer filling have be perfused with in outsourcing slurry (8), the pile body inner core slurry (7) or above both the combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120244857XU CN202124855U (en) | 2011-07-12 | 2011-07-12 | Rotary drilling prefabricate composite pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120244857XU CN202124855U (en) | 2011-07-12 | 2011-07-12 | Rotary drilling prefabricate composite pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202124855U true CN202124855U (en) | 2012-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120244857XU Expired - Fee Related CN202124855U (en) | 2011-07-12 | 2011-07-12 | Rotary drilling prefabricate composite pile |
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|---|---|
| CN (1) | CN202124855U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312426A (en) * | 2011-07-12 | 2012-01-11 | 苗启松 | Prefabricated rotary drilling compound pile and construction method thereof |
| CN103161160A (en) * | 2013-01-10 | 2013-06-19 | 山东科技大学 | Design method of bidirectional pressing-rotating uplift pile |
| CN104594809A (en) * | 2015-01-30 | 2015-05-06 | 刘淼 | Forward screwing impacting-expanding drill tool structure and full screw impacted-expanded pile forming construction method |
| CN115748692A (en) * | 2022-12-07 | 2023-03-07 | 江苏海洋大学 | Prefabricated ultrahigh-performance concrete pressure grouting screw pile and construction process |
-
2011
- 2011-07-12 CN CN201120244857XU patent/CN202124855U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312426A (en) * | 2011-07-12 | 2012-01-11 | 苗启松 | Prefabricated rotary drilling compound pile and construction method thereof |
| CN102312426B (en) * | 2011-07-12 | 2013-09-04 | 苗启松 | Prefabricated rotary drilling compound pile and construction method thereof |
| CN103161160A (en) * | 2013-01-10 | 2013-06-19 | 山东科技大学 | Design method of bidirectional pressing-rotating uplift pile |
| CN104594809A (en) * | 2015-01-30 | 2015-05-06 | 刘淼 | Forward screwing impacting-expanding drill tool structure and full screw impacted-expanded pile forming construction method |
| CN115748692A (en) * | 2022-12-07 | 2023-03-07 | 江苏海洋大学 | Prefabricated ultrahigh-performance concrete pressure grouting screw pile and construction process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20130712 |