CN203639905U - Spinning pile, spinning pile waist and spinning pile head - Google Patents
Spinning pile, spinning pile waist and spinning pile head Download PDFInfo
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- CN203639905U CN203639905U CN201320041683.6U CN201320041683U CN203639905U CN 203639905 U CN203639905 U CN 203639905U CN 201320041683 U CN201320041683 U CN 201320041683U CN 203639905 U CN203639905 U CN 203639905U
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Abstract
The utility model relates to a spinning pile, a spinning pile waist and a spinning pile head. The spinning pile comprises a pile shaft and spiral blades; the lead angles of the blades, i.e. the winding angles in the intersections of the blades and the pile shaft are 50-85 degrees; the blades can take the shape of flat plates and waves; the sections of the blades can be rectangular and trapezoidal; the blades can be arranged in a successive or layered manner; the material of a pile body is produced by adopting steels, reinforcing steel bars, steel fibers and concrete; the pile sinking adopts a press-in manner; in the period, soil around the pile generates the distribution torque for the pile shaft corresponding to the counterforce of the spiral blades, so that torque generated by friction force around the pile is overcome, and the pile is rotated for sinking; the spinning pile can resist pressure, extraction and horizontal force, and can be recycled after being pulled out. The spinning pile waist is arranged at the middle section of the pile; the spinning pile head is arranged at the bottom end of the pile; the shapes of the spinning pile waist and the spinning pile head are similar to the shape of the spinning pile; the spinning pile waist and the spinning pile head are shorter than the spinning pile; the blades of the spinning pile waist and the spinning pile head are successively arranged, and are pressed in the soil along with the pile. The spinning pile, the spinning pile waist and the spinning pile head have the advantages of general equipment needed for construction, good technical and economic performances and are worthy of promotion and application.
Description
Technical field
The utility model relates to spin stake, spin stake waist and spin pile crown, belongs to technical field of buildings.
Background technology
Pile foundation, because geological adaptability is good, bearing capacity is high, sedimentation is little, is widely used.Stake divides by cross sectional shape, has solid square pile, hollow square pile, pile tube; Except common Uniform-section Piles, divide by face shaping, there are expanded bore pile, extruded and extended pile, screw pile, wedge pile etc.Stake divides by construction method, has non-Squeezing Soil Pile, part Squeezing Soil Pile and Squeezing Soil Pile.Divide by bearing mechanism, have friction pile and end bearing pile.Wherein, screw pile is friction pile, and with compared with the straight stake of length, its bearing capacity is higher, has good technical and economic performance with same diameter.Screw pile divides by construction method, has the perfusion screw pile of non-soil compaction and the prefabricated screw pile of soil compaction.The pile quality of perfusion screw pile is higher to construction machinery and site requirements, and curing period is long.With respect to perfusion screw pile, prefabricated screw pile can adopt steel or high-strength concrete, and pile quality is good, and to place strong adaptability, without mud emission, pile sinking is fast.
Common prefabricated screw pile, is generally single-screw blade, and blade lift angle (helical blade and stake axle intersection winding angle) is less, is generally 5 °-30 °, and construction must adopt screw-in mode pile sinking (also must there be suitable pressure on stake top).In pile driving process, pile body must bear compared with high pulling torque, and pile shaft material adopts steel more, and cost is higher; If pile body adopts concrete, construction must adopt adequate measure not bear excessive moment of torsion to guarantee pile driving process pile, such as, pile body cross section is round outside but spuare inside, in square hole, insert square steel rod, reverse square steel rod and drive stake rotation to sink, thereby reduce the moment of torsion that pile body bears, but this making to stake is had relatively high expectations.In fact, common prefabricated screw pile generally bears axle power and a small amount of bending and shearing in long-term duty, do not bear moment of torsion, and in of short duration pile driving process, need to bear moment of torsion, this has just caused the insufficient even unreasonable of material use, resistance to compression as suitable in concrete, is not suitable for antitorquely, bears moment of torsion and will make pile body cost higher; In addition, applying larger moment of torsion needs larger mechanical device, and equipment investment is higher.
In pile foundation engineering, often use prefabricated pile crown, the effect of pile crown is generally plug or breaks ground.Such as, in the time of immersed tube bored pile driving construction, first prefabricated concrete pile head is placed in to steel pipe bottom, use vibrating type machine for placing pipesor piles that pile crown is driven underground, the at this moment effect of pile crown is generally plug; In the time of construction of prefabricated piles, piling bar head is installed in preformed pile bottom, the at this moment effect of pile crown is generally broken ground.In Pile Grouting, also often use and expand pile body or the method at the stake end, such as, extruded and extended pile, bead disk pile, explosion expanded piling, compaction pile etc., adopt the method that increases soil body bearing area to improve pile bearing capacity; Carrier pile, adopts the method for the compaction pile end soil body to improve pile bearing capacity.Above-mentioned prefabricated pile crown, sectional dimension does not expand, and can not directly improve pile bearing capacity; And expansion pile body or the method at the stake end are generally used for castinplace pile.
Utility model content
The purpose of this utility model, the one, overcome the larger deficiency of the moment of torsion of constructing that above-mentioned Screw Piles Constructed by Rotary Method exists in pile driving process, a kind of forced screw pile is proposed, i.e. spin stake; The 2nd, use for reference prefabricated pile crown, expand pile body or the method at the stake end, adopt the bury mechanism same with spin, a kind of spin stake waist that is arranged at pile body stage casing has been proposed, and spin pile crown at the bottom of a kind of be arranged at.
Spin stake, spin stake waist and spin pile crown (being below referred to as spinning body) in the utility model, included an axle and helical blade.Stake axle winding helical blade around, the lift angle of helical blade is that helical blade is 50 °-85 ° with the winding angle of stake axle intersection.
The stake axle of spinning body can be circle, annular (tubular) or regular polygon.
The helical blade of spinning body can be divided into single coil configuration and many helical structures, and the blade of many helical structures is central rotation and is arranged symmetrically with.Helical blade can be plate shaped or waveform along hoop (lift angle direction), radially can be rectangle or trapezoid cross section.The helical blade of spin stake is to arrange continuously or layering setting, and the helical blade of spin stake waist and spin pile crown is to arrange continuously.
The material of spinning body can be steel, steel concrete, prestressed concrete, prestress high intensity concrete, steel fibrous concrete and combination thereof.
Spin stake, in the time of construction, is established enclasp device on stake axle top, holds an edge stake axle tightly and is around evenly arranged, and prevents pile deflection; Between enclasp device and water booster system, rolling bearing is set, such as double-direction thrust ball bearing; During pile sinking, exerted pressure in stake top, do not apply moment of torsion, soil produces distribution moment of torsion to the counter-force of helical blade to stake, overcomes the stake moment of torsion that frictional resistance produces around, promotes stake rotation and sinks.
Spin stake waist is arranged at the stage casing of preformed pile, as stake waist is arranged at the junction of stake, in the upper end of stake waist or lower end or upper and lower two ends rolling bearing is set; Stake waist also can be attached on pile body, forms skirt shape, between stake waist and pile body, rolling bearing is set.
Spin pile crown is divided into flat-headed and sharp cone distal.Spin pile crown is arranged at the bottom of preformed pile, in the junction of pile crown and preformed pile, rolling bearing is set, as the top connecting place of the bottom at preformed pile and pile crown arranges rolling bearing; The bottom of preformed pile also can be inserted in pile crown, with the bottom connecting place of pile crown, rolling bearing is being set.
The utility model has changed the blade arrangement of common screw pile, has proposed a kind of new pile sinking bury mechanism and corresponding construction method.Major measure has four:
One, strengthen helical blade lift angle.Lift angle reaches 50 °-85 °, utilizes the stake counter-force generation distribution moment of torsion of soil around, overcomes the stake moment of torsion that frictional resistance produces around, makes spinning body rotation; The moment of torsion that is subject to of stake bearing distributes along the long dispersion of stake, without resembling common screw pile on stake top or stake two ends apply concentrated moment of torsion.
Two, adopt many helical blades.Many helical blades of spinning body adopt central rotations to be arranged symmetrically with, the symmetrical and homogenising of local moment of torsion that a bearing is subject to, thus reduce local moment of torsion.
Three, adopt rolling bearing to connect.When construction, only exerted pressure in stake top, do not apply moment of torsion, guarantee that stake is not subject to concentrate moment of torsion.(1) connection of spin stake: the measure of holding tightly is taked on the stake top in spin stake, holds tightly and is around evenly arranged along a stake axle, prevents pile deflection; Between enclasp device and pressurization setting, rolling bearing is set, as double-direction thrust ball bearing.(2) connection of spin stake waist: when stake waist is arranged at the junction of stake, in the upper end of stake waist or lower end or upper and lower two ends rolling bearing is set; Stake waist also can be attached on pile body, forms skirt shape, between stake waist and pile body, rolling bearing is set.(3) connection of spin pile crown: the junction at spin pile crown and preformed pile arranges rolling bearing, as the top connecting place of the bottom at preformed pile and pile crown arranges rolling.
Four, optimize helical blade shape.Helical blade can be made as waveform along hoop (lift angle direction), increases space stiffness and the intensity of blade, can reduce again rotational resistance simultaneously.Helical blade radially can be made as trapezoid cross section, reduces the stress concentration degree of blade.
Above-mentioned measure has greatly reduced the suffered moment of torsion of the spinning body in pile driving process, and the loading condition that of short duration pile driving process and long-term duty are born is basically identical, and this is for fully rationally utilizing material of body of a pile to establish technical foundation.
The beneficial effects of the utility model:
Compare with common stake, above-mentioned spinning body has expanded the bearing area of stake with surrounding soil, is conducive to improve the bearing capacity of foundation pile.Spin stake can resistance to compression, resistance to plucking and horizontal force resistant.Steel or prestressed concrete spin stake are reused after also can extracting.The moment of torsion that spin stake is born in pile sinking buries process is very little, basic identical with the construction equipment of other forced stake; Spin stake waist and spin pile crown can with common preformed pile use in conjunction, also do not change existing construction equipment.Therefore, the utility model technical and economic performance is good, easy to utilize.
Accompanying drawing explanation
Fig. 1,2 is the spin stake schematic diagram of the utility model band single-screw blade.
Fig. 3,4 is the spin stake schematic diagram of the utility model band double helix blade.
Fig. 5,6 is the spin stake schematic diagram of the utility model band triple helical blade.
Fig. 7,8 is the spin stake schematic diagram of the utility model band four helical blades.
Fig. 9 is the utility model steel plate shape helical blade schematic diagram.
Figure 10 is the utility model steel waveform helical blade schematic diagram.
Figure 11 is the utility model concrete trapezoid cross section helical blade schematic diagram.
Figure 12 is the utility model spin stake top construction equipment scheme of installation.
Figure 13,14 for the utility model spin stake waist and with preformed pile pile body connection diagram.
Figure 15,16 for the utility model spin pile crown and with connection diagram at the bottom of preformed pile stake.
In figure 1 be a stake axle, 2 for helical blade, 3 for water booster system, 4 for rolling bearing, 5 for enclasp device, 6 for a spin stake waist, 7 be spin pile crown.
the specific embodiment
Below in conjunction with accompanying drawing, utility model is described further:
In the prefabrication stage: stake axle 1 material can adopt steel, also can adopt concrete (containing steel concrete, prestressed concrete, steel fibrous concrete etc.), or adopt the combination of Steel concrete.In the time that stake axle 1 adopts steel pipe or concrete filled steel tube, corresponding helical blade 2 materials adopt steel plate.In the time that stake axle 1 adopts concrete, corresponding helical blade 2 materials also adopt concrete.
The site construction stage: (1) spin pile driving construction: establish enclasp device 5 on stake top, hold an edge stake axle 1 tightly and be around evenly arranged, prevent pile deflection; Between enclasp device 5 and pressurization arrange 3, rolling bearing 4 is set, as double-direction thrust ball bearing; When pile sinking, exerted pressure in stake axle 1 top, do not apply moment of torsion, the soil promotion stake rotation of stake week is sunk.(2) spin stake waist 6 is constructed: spin stake waist 6 is arranged at the stage casing of preformed pile axle 1, as spin stake waist 6 is arranged at the junction of an axle 1 and stake axle 1, in the upper end of spin stake waist 6 or lower end or upper and lower two ends rolling bearing 4 is set; Also can take enclasp device 5 that spin stake waist 6 is attached on an axle 1, form skirt shape, between spin stake waist 6 and stake axle 1, rolling bearing 4 is set; When pile sinking, exerted pressure in stake axle 1 top, do not apply moment of torsion, stake week soil promote that a spin stake waist 6 rotates and a stake axle 1 does not turn, a spin stake waist 6 sinks with stake axle 1.(3) spin pile crown 7 is constructed: spin pile crown 13 is arranged at the bottom of preformed pile 11, in spin pile crown 7 and the junction of preformed pile, rolling bearing 4 is set, as the top connecting place of the bottom at preformed pile and pile crown 7 arranges rolling bearing 4; The bottom of preformed pile also can be inserted in pile crown 7, with the bottom connecting place of pile crown 7, rolling bearing 4 is being set.
Claims (16)
1. spin stake, is characterized in that, includes an axle and helical blade, stake axle winding helical blade around, and the lift angle of helical blade is that helical blade is 50 °-85 ° with the winding angle of stake axle intersection.
2. spin stake waist, is characterized in that, includes an axle and helical blade, stake axle winding helical blade around, and the lift angle of helical blade is that helical blade is 50 °-85 ° with the winding angle of stake axle intersection.
3. spin pile crown, is characterized in that, includes an axle and helical blade, stake axle winding helical blade around, and the lift angle of helical blade is that helical blade is 50 °-85 ° with the winding angle of stake axle intersection.
4. spin stake according to claim 1, is characterized in that, helical blade is divided into single coil configuration and many helical structures, and the blade of many helical structures is central rotation and is arranged symmetrically with.
5. spin stake waist according to claim 2, is characterized in that, helical blade is divided into single coil configuration and many helical structures, and the blade of many helical structures is central rotation and is arranged symmetrically with.
6. spin pile crown according to claim 3, is characterized in that, helical blade is divided into single coil configuration and many helical structures, and the blade of many helical structures is central rotation and is arranged symmetrically with.
7. spin stake according to claim 1, is characterized in that, described helical blade is that lift angle direction is plate shaped or waveform along hoop, is radially rectangle or trapezoid cross section.
8. spin stake waist according to claim 2, is characterized in that, described helical blade is that lift angle direction is plate shaped or waveform along hoop, is radially rectangle or trapezoid cross section.
9. spin pile crown according to claim 3, is characterized in that, described helical blade is that lift angle direction is plate shaped or waveform along hoop, is radially rectangle or trapezoid cross section.
10. the spin stake according to claim 1, is characterized in that, enclasp device is established on described stake axle top, holds tightly to be around evenly arranged along a stake axle, and water booster system is established on enclasp device top, between enclasp device and water booster system, rolling bearing is set.
11. spin stake waists according to claim 2, is characterized in that, described spin stake waist is arranged at the stage casing of preformed pile, and stake waist connects upper and lower stake, and the upper end of stake waist or lower end or upper and lower two ends arrange rolling bearing; Or a stake waist is attached on an axle, form skirt shape, between stake waist and pile body, rolling bearing is set.
12. spin pile crowns according to claim 3, is characterized in that, described spin pile crown is arranged at the bottom of preformed pile, in the junction of pile crown and preformed pile, rolling bearing is set; Or in the bottom of preformed pile insertion pile crown, with the bottom connecting place of pile crown, rolling bearing is being set.
13. spin stakes according to claim 1, is characterized in that, the helical blade of described spin stake is to arrange continuously or layering setting.
14. spin stake waists according to claim 2, is characterized in that, the helical blade of described spin stake waist is to arrange continuously.
15. spin pile crowns according to claim 3, is characterized in that, the helical blade of described spin pile crown is to arrange continuously.
16. spin pile crowns according to claim 3, is characterized in that, described pile crown bottom is divided into flat-headed and sharp cone distal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320041683.6U CN203639905U (en) | 2013-01-25 | 2013-01-25 | Spinning pile, spinning pile waist and spinning pile head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320041683.6U CN203639905U (en) | 2013-01-25 | 2013-01-25 | Spinning pile, spinning pile waist and spinning pile head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203639905U true CN203639905U (en) | 2014-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320041683.6U Withdrawn - After Issue CN203639905U (en) | 2013-01-25 | 2013-01-25 | Spinning pile, spinning pile waist and spinning pile head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203639905U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929124A (en) * | 2015-05-20 | 2015-09-23 | 成都科创佳思科技有限公司 | Anti-adhesion drill rod for spiral pile hammer |
| CN105756056A (en) * | 2016-04-07 | 2016-07-13 | 中国十七冶集团有限公司 | Novel concrete screw pile construction method |
| CN110067245A (en) * | 2019-03-22 | 2019-07-30 | 西南交通大学 | It is a kind of can expanding reinforcing spiral self-drilling type piling bar and its method of construction |
-
2013
- 2013-01-25 CN CN201320041683.6U patent/CN203639905U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929124A (en) * | 2015-05-20 | 2015-09-23 | 成都科创佳思科技有限公司 | Anti-adhesion drill rod for spiral pile hammer |
| CN105756056A (en) * | 2016-04-07 | 2016-07-13 | 中国十七冶集团有限公司 | Novel concrete screw pile construction method |
| CN110067245A (en) * | 2019-03-22 | 2019-07-30 | 西南交通大学 | It is a kind of can expanding reinforcing spiral self-drilling type piling bar and its method of construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140611 Effective date of abandoning: 20150715 |
|
| RGAV | Abandon patent right to avoid regrant |