CN102704474B - Energy-saving cast-in-place pile tip - Google Patents
Energy-saving cast-in-place pile tip Download PDFInfo
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- CN102704474B CN102704474B CN201210151715.8A CN201210151715A CN102704474B CN 102704474 B CN102704474 B CN 102704474B CN 201210151715 A CN201210151715 A CN 201210151715A CN 102704474 B CN102704474 B CN 102704474B
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- pile top
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- pile
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Abstract
The invention provides an energy-saving cast-in-place pile tip, belonging to the building construction device field. The pile tip comprises a conical pile tip base body; a matching neck capable of matching with a steel tube is arranged above the pile tip base body; four ribs extending along generatrix are evenly distributed on the conical wall of the pile tip base body; each rib is made from a high-strength low-melting-point material; and all the ribs converge to one channel on the pile tip base body axial line and the channel penetrates through the upper part of the pile tip base body. The inventive pile tip not only can realize easy ground breaking and effectively reduce piling energy consumption, but also can ensure the building supporting capacity of the pile.
Description
Affiliated technical field
The present invention relates to a kind of architectural furniture, particularly, is a kind of immersed tube pile top that is applicable to tube-sinking cast-in-situ pile.
Background technology
In modern architecture, building lot all need to consist of foundation pile, and its common structure is jointly to have supported a cushion cap, a bearing unit of formation building by several concrete column stakes of going deep into greatly.
In the building process of building stake, basic building theory is, by building pile bearing building, makes the building can sedimentation.In current construction, stake hole is beaten to after enough dark, just can think that a bottom, hole has enough flintinesses, can support building, therefore, by the mode of perfusion or preformed pile, pile in stake hole, can construct building bearing unit.
In building system stake operation, mainly contain at present three kinds of system stake modes: 1. immersed tube bored, first steel pipe is squeezed into the earth, in this process, steel pipe is extruded onto tube wall outside by original mud in duct, in order to prevent that mud is back in a hole, in steel pipe, direct concrete perfusion, then extracts steel pipe; 2. preformed pile, is directly squeezed into the earth by prefabricated concrete pile that is; 3. drill-pouring, gets out a hole by rig, then in stake hole, puts into cage of reinforcement, and concrete perfusion.
In three kinds of above-mentioned system stake modes, the mode of preformed pile and drill-pouring is applied more in Larger Engineering Projects, but the cost of system stake plant equipment is larger; For Small Project, due to the stake machine low price of tube-sinking cast-in-situ pile, convenient transfer, therefore still generally adopts.In immersed tube bored process, the lower end of steel pipe need to be socketed a conical pile top, and steel pipe, under the effect of stake machine weight, heads in the earth by this pile top, and therefore, the ability of breaking ground of pile top is stronger, and the process of driving piles is energy-conservation.For this reason; those skilled in the art can consider to improve by improving the sharpness of pile top the ability of breaking ground of pile top conventionally; yet; pile top is more sharp-pointed; be difficult to ensure on the one hand the intensity of pile top, may be cracked in piling process, on the other hand; because it easily sinks, be just difficult to ensure its bearing value to building.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of energy-conservation perfusion pile top, this kind of perfusion pile top not only easily broken ground, and can effectively reduce piling energy consumption, and can ensure again its bearing value to building.
The technical solution adopted for the present invention to solve the technical problems is: this energy-conservation perfusion pile top comprises conical pile top matrix; Described pile top matrix top is provided with the fit neck that can match with steel pipe; Uniform four fins that extend along bus in the conical walls of described pile top matrix; Described in each, fin consists of high strength, low melting point material, and described in each, fin converges knot to a passage on described pile top matrix axis; Described passage runs through described pile top matrix, and described in each, fin converges knot to the bottom of described pile top matrix, and converge node form mate with pile top matrix phase little addendum cone, a depending post being plugged in described passage of extension above described little addendum cone; Described fin, little addendum cone, depending post are one-body molded by identical material.
As preferably, described fin consists of rigid plastics or low-melting alloy, to guarantee lower fusing point.
As preferably, described pile top matrix is formed by pouring concrete.
As preferably, the thickness of described fin is 3mm ~ 5mm, and the width from described pile top matrix taper seat to fin outer side edges edge is 10mm ~ 20mm.
As preferably, the fit neck upper surface of described pile top matrix and be concave surface with the surface that described passage has a common boundary, is beneficial to fuel fluid and flows into described passage.
The invention has the beneficial effects as follows: by being distributed in four fins on described pile top matrix, can be when pile top breaks through a mud layer plane, first in this plane, form an intersection cross cutting mouth, according to mechanics principle, in the occupied plane of this cross cutting mouth, form many places stress concentrated, thereby greatly reduced the penetration resistance of pile top; In pile top, sink down into after enough degree of depth, in order to support building, need again to improve the penetration resistance of pile top, now, only need in stake hole, inject gasoline or combustion gas, and input oxygen-containing gas, after burning, described fin fusing, abolishes stress concentration effect, can ensure the pile body bearing value after pile.
Accompanying drawing explanation
Fig. 1 is looking up to stereogram of this energy-conservation castinplace pile embodiment of point.
Fig. 2 is overlooking to stereogram of Fig. 1 embodiment.
Fig. 3 is the stereogram of stress frame in Fig. 1 embodiment.
Fig. 4 is the stereogram of pile top matrix in Fig. 1 embodiment.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1-Fig. 4 is an embodiment of this energy-conservation castinplace pile point, and in this embodiment, pile top consists of pile top matrix 1 and stress frame 2.
It is conical that described pile top matrix 1 is, and its drift angle is pruned, thereby reserve a place to stick an awl-a tiny bit of land for the little addendum cone 20 of described stress frame 2; Pile top matrix 1 top is provided with the fit neck 11 that can match with steel pipe (immersed tube steel pipe, not shown); Uniform four grooves 10 that extend along bus in the conical walls of pile top matrix 1, for setting the fin 21 of described stress frame 2; The axis of described pile top matrix 1 is provided with a passage 12 that runs through pile top matrix 1; Described pile top matrix 1 can adopt the cast of concrete one to form by mould.
As shown in Figure 3, for generation of stress concentration effect, it comprises described fin 21, described little addendum cone 20, depending post 22 to described stress frame 2; Three members can pass through mould one moulding by casting, described stress frame 2 is inserted in the described passage 12 of pile top matrix 1 by depending post 22, after cooperation, described little addendum cone 20 is filled the drift angle that described pile top matrix 1 is pruned just, and described in each, fin 21 strikes groove 10 described in each that embeds pile top matrix 1.
Described stress frame 2 is advisable by high strength hard plastic production, under hard geological condition, also can adopt low-melting alloy, as zinc-containing alloy.
The thickness of the described fin 21 on above-mentioned stress frame 2 is 3mm ~ 5mm, and the width from described pile top matrix 1 taper seat to fin 21 outer side edges edges is 10mm ~ 20mm; And the outer side edges of fin 21, along can rounding or open cutting edge of a knife or a sword, be done sharp processing, makes it to be easier to cut earth.
Fit neck 11 upper surfaces of described pile top matrix 1 and be concave surface with the surface that described passage 12 has a common boundary, are beneficial to fuel fluid and flow into described passage.
Above-mentioned energy-conservation perfusion pile top, by being distributed in four fins 21 on described pile top matrix 1, can be when pile top breaks through a mud layer plane, first in this plane, form an intersection cross cutting mouth, according to mechanics principle, in the occupied plane of this cross cutting mouth, form many places stress and concentrate, thereby greatly reduced the penetration resistance of pile top, to reduce the piling energy consumption of a machine; In pile top, sink down into after enough degree of depth, in order to support building, need again to improve the penetration resistance of pile top, now, only need in stake hole, inject gasoline or combustion gas, and input oxygen-containing gas, after burning, described fin 21 fusings, abolish stress concentration effect, can ensure the pile body bearing value after pile.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. an energy-conservation perfusion pile top, comprises conical pile top matrix (1); Described pile top matrix (1) top is provided with the fit neck (11) that can match with steel pipe, uniform four fins (21) that extend along bus in the conical walls of described pile top matrix (1); It is characterized in that: fin described in each (21) consists of high strength, low melting point material, the requirement of described low melting point is, in the stake hole of getting in piling, inject gasoline or combustion gas, and input oxygen-containing gas, and after burning, described fin fusing; Fin described in each (21) converges knot to the passage (12) on described pile top matrix (1) axis, described passage (12) runs through described pile top matrix (1), fin described in each (21) converges ties the bottom to described pile top matrix (1), and the node that converges form with pile top matrix (1) match little addendum cone (20), a depending post (22) being plugged in described passage (12) is extended in described little addendum cone (20) top; Described fin (21), little addendum cone (20), depending post (22) are one-body molded by identical material.
2. energy-conservation perfusion pile top according to claim 1, is characterized in that: described fin (21) consists of rigid plastics.
3. energy-conservation perfusion pile top according to claim 1, is characterized in that: described fin (21) consists of low-melting alloy.
4. energy-conservation perfusion pile top according to claim 1, is characterized in that: described pile top matrix (1) is formed by pouring concrete.
5. according to the energy-conservation perfusion pile top described in claim 1 or 4, it is characterized in that: the fit neck upper surface of described pile top matrix (1) and be concave surface with the surface that described passage (12) has a common boundary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210151715.8A CN102704474B (en) | 2012-05-16 | 2012-05-16 | Energy-saving cast-in-place pile tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210151715.8A CN102704474B (en) | 2012-05-16 | 2012-05-16 | Energy-saving cast-in-place pile tip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102704474A CN102704474A (en) | 2012-10-03 |
| CN102704474B true CN102704474B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210151715.8A Expired - Fee Related CN102704474B (en) | 2012-05-16 | 2012-05-16 | Energy-saving cast-in-place pile tip |
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| CN (1) | CN102704474B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201056688Y (en) * | 2007-06-25 | 2008-05-07 | 中国建筑第七工程局有限公司 | Hollow pile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2911036B1 (en) * | 1998-05-13 | 1999-06-23 | 株式会社ケー・エフ・シー | Deformed bar anchor and its manufacturing method |
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2012
- 2012-05-16 CN CN201210151715.8A patent/CN102704474B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201056688Y (en) * | 2007-06-25 | 2008-05-07 | 中国建筑第七工程局有限公司 | Hollow pile |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-323927A 1999.11.26 |
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| Publication number | Publication date |
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| CN102704474A (en) | 2012-10-03 |
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Inventor after: Ao Xiang Inventor after: Peng Yihong Inventor after: Qi Wenjing Inventor after: Wu Huali Inventor after: Luo Jun Inventor after: Wen Ningxiao Inventor after: Xiong Huanpai Inventor after: Huang Meijiao Inventor after: Li Jie Inventor after: Chen Chen Inventor after: Zhao Liyan Inventor before: Ma Genchang |
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