CN208023566U - A kind of screw thread rammed bulb pile - Google Patents

A kind of screw thread rammed bulb pile Download PDF

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Publication number
CN208023566U
CN208023566U CN201820132297.0U CN201820132297U CN208023566U CN 208023566 U CN208023566 U CN 208023566U CN 201820132297 U CN201820132297 U CN 201820132297U CN 208023566 U CN208023566 U CN 208023566U
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pile
screw thread
rammed
concrete
enlarged footing
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刘淼
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Abstract

The utility model discloses a kind of screw thread rammed bulb piles, including top screw thread pile body, and rammer enlarged footing is connected in Screw Pile lower end.Ram expand hammer make rammer that movement of falling object impact filler material generates can compacted pile-end soil layer, it not only solves all kinds of Auger drilling pore-forming technique stakes bottom and has loosened soil, the drawbacks of end resistance is much smaller than the techniques such as the indentation such as prefabricated tubular pile or vibration, hammering pile under equal conditions, and bearing course at pile end is further strengthened by percussing and crushing, increase the bearing capacity of pile-end soil layer, solve suitable supporting course can not be reached by equipment pile effect of depth and caused by problem under low bearing capacity.Stake bottom rams enlarged footing and increases an end cross-sectional area, it avoids all kinds of Screw Piles and is wasted to increase concrete caused by an end forced area increases stake diameter, this case screw thread rammed bulb pile increases an end by double action and carries power, and greatly reduce concrete amount, be it is a kind of efficiently, the pile-type of energy-saving and environmental protection and pile-formation process.

Description

A kind of screw thread rammed bulb pile
Technical field
The utility model is related to a kind of rammed bulb pile, specially a kind of screw thread rammed bulb pile belongs to architectural engineering application technology neck Domain.
Background technology
Classify by stressing conditions, stake is divided into friction pile, end-bearing pile, friction end-bearing pile (point friction pile) three classes, and stake is held Power is carried to be made of pile side resistance (soil around pile frictional force) and stake end load power.Under normal conditions, the approach for improving pile bearing capacity is exactly Pile side resistance or end resistance are improved by technological means.
Club-footed pile series technique
Rammed bulb pile is casing to be sunk to ground using vibration sinking tube equipment or diesel hammer hammering, and utilize column hammer or diesel hammer Ram dry concrete in casing and form stake bottom and ram enlarged footing, then place steel reinforcement cage, casting concrete carry pipe pile and At a kind of club-footed pile.That there are noises is big for vibration sinking tube or diesel hammer hammer hidden pipe, does not meet environmental requirement and immersed tube drilling depth energy Force difference, it is difficult to penetrate and enter the disadvantages such as preferable supporting course compared with hard stratum, therefore bearing capacity of single pile is relatively low, it is difficult to meet modern architecture pair The requirement of bearing capacity of pile foundation.
Carrier pile (construction method of concrete-pile) patent No. CN98101041.5 is that one kind hammering free fall hammer into shape by column The soil body is hit, then the mode pore-forming of casing follow-up is reinforced using column hammering blow casing inner filling material (building waste, rubble etc.) Stake subsoil body after requirement to be achieved, continues to ram the pile-formation process that dry concrete forms rammer enlarged footing, be formed by multiple It closes carrier and rams enlarged footing part end load power height, be under equal conditions more than Capacity of Single Ramming Reamed Pile, but its pore-forming technique column is hammered into shape Pore-forming is rammed, inefficiency, depth of pore forming is small, therefore bearing capacity has been difficult to bigger promotion.
Rotary squeezing bored concrete pile and its pile forming method, the patent No. 200710051598.7 by twist bit rotary drilling at Hole after reaching predetermined depth, struts drilling tool bottom opening and closing device, rotation forms bottom and rams enlarged footing, then by oil cylinder and motor Pump concrete pile.Its pore-forming mode is crept into for spiral rotating, and drilling ability is strong, can drill through compared with hard stratum, be held into setting Power layer, but in compared with hard stratum, opening and closing device strut mortality height, stake end enlarged head be divided into hole there is no guarantee that, and its enlarged footing Part is forms by opening and closing device rotation failure stake subsoil body, and there are a large amount of loosened soil, therefore stake end load power value is relatively low.
Screw Pile series technique
Screw Pile is the special-shaped bored concrete pile that a kind of pile body carries concrete thread in whole or in part, passes through pile body coagulation Native thread forms screw type with pile peripheral earth and is closely engaged, and greatly improves pile side resistance.Wherein Patent No. The semi-screw pile and its pile forming method of ZL03128265.2 and a kind of reducing of the Patent No. patent No. 201410552720.9 are complete Screw Pile and its pile forming method are widely used in recent years.But this pore-forming work by spiral drill rotary drilling There is micro loosened soil at skill, stake end, and compare the full Squeezing Soil Pile such as pile for prestressed pipe under equal conditions, and end resistance is relatively low.
The above pile-type and pile making method are end-bearing pile relatively conventional at this stage, friction pile and point friction pile.Rammed bulb pile, Carrier pile strengthens a subsoil body by hammering, and hammering, which is formed, rams enlarged footing, expands an end cross-sectional area to increase an end Resistance, but its there are noises big, pile inefficient, the disadvantages such as depth of pore forming is shallow.Rotary squeezing bored concrete pile is bored by rotary drilling It is stronger into ability, but bottom enlarged footing is formed and is not ensured, and stake bottom has loosened soil, bearing capacity of pile tip poor.Three of the above pile-type And pile-formation process is formed by stake, pile body is Uniform-section Piles, and pile side resistance is relatively low.
Semi-screw pile and reducing full thread stake, by spiral drill rotary drilling pore-forming, drilling ability is strong.Screw thread pile body with Pile peripheral earth screw type is closely engaged, and pile side resistance has a great promotion, but its end is there are loosened soil, and stake end cross-sectional area compared with Small, the Squeezing Soil Piles such as the pile for prestressed pipe that compares, it is smaller that end carries power.
Rotary squeezing bored concrete pile, semi-screw pile and reducing full thread pile forming technology are half Squeezing Soil Pile, in hard soil layer, ovum Rate of penetration is slow in stone, gravelly soil.
By being analyzed above it is found that the hammering of rammed bulb pile, vibration sinking tube technique immersed tube energy force difference, inefficiency, Er Qiewu Method changes pile body form, can not obtain another stepping exhibition in terms of improving pile side resistance, and the mode of Screw Pile Auger drilling, though Drilling ability is strong, and the screw pile collateral resistance of formation is big, but can not avoid an end loosened soil, and it is even more impossible to pass through technological means reinforcing pile The end soil body carries power to obtain higher end.How to allow rammed bulb pile longer at pile length, pile side resistance bigger, or how to allow Screw Pile Stake bottom is without loosened soil, stake basal cross section bigger, no matter so that bored concrete pile is all obtained in pile side resistance or in end resistance into one Step is promoted, and becomes bearing capacity higher, more energy saving, environmentally friendly friction end-bearing pile becomes in pile foundation technical research at this stage Therefore a great problem proposes a kind of screw thread rammed bulb pile and its construction method regarding to the issue above.
Utility model content
The purpose of this utility model is that the screw thread rammed bulb pile provided to solve the above-mentioned problems is a kind of bottom belt Have and ram the screw cast-in-place pile of enlarged footing by ramming to expand hammer and ram filler material and formed, construction method is casing threads drilling machine by casing Rotary drilling, rate of penetration is fast, can penetrate hard soil layer easily and enter setting supporting course, and freely falling body fortune is done by ramming to expand to hammer into shape Dynamic impact filler material reaming, which forms bottom, rams to expand and rams enlarged footing, rams and expands hammer and rammed stake subsoil body compacted, solves all kinds of spirals Drilling and forming hole pile-formation process, stake bottom is there are loosened soil, and stake end carries power and is less than the problem that tubular pile end carries power under equal conditions.
The utility model is achieved through the following technical solutions above-mentioned purpose, and a kind of screw thread rammed bulb pile includes the spiral shell on top Line pile body is fixedly connected in screw thread pile body lower end by ramming the rammer enlarged footing for expanding hammering blow filler material and being formed,
Further, the screw thread pile body should be embedded in a bottom and ram enlarged footing, and insert depth is not less than 5 centimeters.
Further, the Screw Pile is cast-in-place concrete pile of the pile body all with concrete thread.
Further, Screw Pile pile body part carries the cast-in-place concrete pile of concrete thread.
Further, the rammer enlarged footing part is concrete using filler material.
Further, the rammer enlarged footing part is concrete using filler material part.
A kind of the step of construction method of screw thread rammed bulb pile, the construction method includes:
1) sleeve rotating of the outer wall with spiral component is sunk into ground up to set depth using casing threads drilling machine, and It will be emptied in casing;
2) filler material is 1. put into casing, 2. will be rammed to expand to hammer into shape to be put into casing to do in movement of falling object impact casing and be filled out Filler material is rammed out casing by charge, and 1., 2. step will be rammed to expand and be hammered into shape until after reaching predetermined filling material side amount or compactness for repetition Remove casing.When enlarged footing construction is rammed in bottom, it can be needed sleeve lift certain distance according to construction;
3) steel reinforcement cage is placed in casing, then casting concrete, after concreting, sleeve rotating is extracted ground Face forms screw thread rammed bulb pile.During rotation carries pipe, supplementary irrigation concrete again can be needed according to construction.
Further, when concrete all using filler material, screw thread rammed bulb pile is formed.
Further, it is first to insert the materials such as building waste to be rammed with expansion hammer is rammed that enlarged head point form of construction work is rammed in bottom The reinforcing pile end soil body is hit, concrete is further filled with after reinforcing, it is composite material to be rammed with rammer expansion hammer and to form a bottom rammer enlarged footing Screw thread rammed bulb pile.
Further, ram expand hammer be independent unit equipment when, threaded sleeve drilling machine after getting into design position under casing, can will Unit is removed, and carrying out next pile pore-forming immersed tube using another casing works, and is waited for that a pile rams to expand and is finished, steel reinforcement cage placement In place, and in pipe after placing concrete, it is moved back to machine, carries out follow-up work.
The utility model has the beneficial effects that:Movement of falling object impact filler material reaming formation bottom is done by ramming to expand to hammer into shape Enlarged footing is rammed, rams and expands hammer and rammed stake subsoil body compacted, solve all kinds of Auger drilling pore-forming techniques, stake bottom exists empty Soil does end and carries value small problem when power calculates.Stake bottom rams enlarged footing and increases an end cross-sectional area, further increases an end and carries Power.Because casing threads stake machine cost is more expensive, and electric power is larger, and same building site is same using multiple devices to shorten the construction period When construction cost and electric load it is larger, this case Drop hammer pile driver and casing threads drilling machine combination constructing method thereof pass through Drop hammer pile driver With casing threads drilling machine combination construction mode, that is, solve rammed bulb pile can not penetrate compared with hard stratum enter pile bottom force holding layer and wait cut Pile body collateral resistance small drawback in face solves all kinds of Screw Pile pile-end sediment stake bottom low bearing capacities that pile is crept by drill bit again The problem of.Constructed by two equipment reasonable combinations in construction, doubled up construction effect, reduce construction cost to Greatly improve the economic benefit of screw thread rammed bulb pile.
Thus double action further increases end load power to this case screw thread rammed bulb pile, and avoids all kinds of screw cast-in-place piles Increase the concrete waste that a diameter generates to increase end area.
Description of the drawings
Fig. 1 is the screw thread rammed bulb pile schematic diagram that the utility model rams that enlarged footing filler material is entirely concrete
Fig. 2 is the screw thread rammed bulb pile schematic diagram that the utility model rams that enlarged footing is composite material;
Fig. 3 is one of one screw thread construction method of ramming expanded pile schematic diagram of the embodiments of the present invention;
Fig. 4 is the two of one screw thread construction method of ramming expanded pile schematic diagram of the embodiments of the present invention;
Fig. 5 is one of two screw thread construction method of ramming expanded pile schematic diagram of the embodiments of the present invention;
Fig. 6 is the two of two screw thread construction method of ramming expanded pile schematic diagram of the embodiments of the present invention;
In figure:1, screw thread pile body, 2, ram enlarged footing.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.
A kind of screw thread rammed bulb pile, including top screw thread pile body 1 are fixedly connected in 1 lower end of screw thread pile body and are expanded by ramming The rammer enlarged footing 2 that hammering blow filler material is formed.
The screw thread pile body 1 should be embedded in the rammer enlarged footing 2, and insertion distance is not less than 5cm.
As shown in Figure 1:
The screw thread pile body 1 is cast-in-place concrete pile of the pile body all with concrete thread.
The enlarged footing 2 that rams is the tamper diffusion head that filler material is entirely concrete formation.
As shown in Figure 2:The screw thread pile body 1 is the cast-in-place concrete pile that pile body part carries concrete thread.
The 2 filler material part of enlarged footing of ramming is that the composite material that concrete is formed rams enlarged footing.
Embodiment one:
As shown in Figure 3 and Figure 4:A kind of screw thread construction method of ramming expanded pile
1) casing threads drilling machine is moved into stake position, rotates interior drilling rod and casing, is drilled down into.
2) after casing sinks to set depth, interior drilling rod is proposed into casing, and will be cleaned out in casing.
3) filler material is inserted in casing, and does the movement of falling object using rammer expansion hammer and filler material is rammed into out casing, repeatedly It repeats this step and forms screw thread rammed bulb pile rammer enlarged footing.
4) it is put into the steel reinforcement cage made in casing, and pours into a mould concrete in casing.
5) interior drilling rod is put back into casing, pushes down steel reinforcement cage.
6) casing is rotated and upgraded, screw thread rammed bulb pile is formed.
Embodiment two:
As shown in Figure 5 and Figure 6:A kind of screw thread construction method of ramming expanded pile:
1) by auger stem align piles position
2) rotation auger stem is drilled down into set depth, and proposes auger stem
3) stake holes for having drawn screwed sleeve rotating drilling auger stem, is drilled down into process, rams expansion hammer and is covering It does the movement of falling object in pipe soil in sleeve pipe is discharged, until reaching set depth
4) it proposes to ram expansion hammer, after putting into the reinforcement materials such as building waste or rubble, rams to expand to hammer into shape and do freely falling body in casing Casing inner filling material is rammed out casing, and repeats above step by movement, until reaching predetermined compactness
5) no slump concrete is put into, rams to expand to hammer into shape and does the movement of falling object in casing, casing inner concrete is rammed into out casing, And above step is repeated, until reaching predetermined filling amount, forms composite material and ram enlarged footing.
6) it will ram and expand hammer proposition casing, and be put into steel reinforcement cage
7) placing concrete into casing
After concrete is poured, rotation proposes casing, forms screw thread rammed bulb pile.During rotating and upgrading, if it is desired, It can carry out supplementary irrigation concrete again.
This construction method also can will directly be bored without advance pilot hole using drilling machine under sleeve rotating, in going down process, profit The movement of falling object is done in casing with ramming to expand to hammer into shape, the earth rammer of sleeve pipe in going down process is gone out, until reaching set depth.
Existing all kinds of thread helix pile construction technologies, be after being crept into using auger stem stock carry brill and form pile body, or Person expands drill bit disturbed soil by all kinds of measures in drilling rod bottom and forms larger end pile body, and such construction technology can not be kept away Exempt from pile-end sediment, enlarged also cannot ensure to reach default effect, and this case screw thread rammed bulb pile and its construction utilize hollow Casing is constructed, and after being drilled into set depth, rammer can be put into casing and expands hammer, is rammed expansion hammer and is done movement of falling object impact filling Expect the rammer generated can compacted pile-end soil layer, not only solve all kinds of Auger drilling pore-forming technique stakes bottom and have loosened soil, together The drawbacks of end resistance is much smaller than the techniques such as the indentation such as prefabricated tubular pile or vibration, hammering pile Deng under the conditions of, and pass through impact It is compacted further to strengthen bearing course at pile end, the bearing capacity of pile-end soil layer is increased, is solved by equipment pile effect of depth, nothing Method reach suitable supporting course and caused by problem under low bearing capacity.Stake bottom rams enlarged footing and increases an end cross-sectional area, avoids All kinds of end resistance stakes waste to increase concrete caused by an end forced area increases stake diameter, and this case screw thread rammed bulb pile is thus dual Effect further increases an end and carries power, and greatly reduces concrete amount, is a kind of efficient, energy-saving and environmental protection pile-type And pile-formation process.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiment being appreciated that.

Claims (6)

1. a kind of screw thread rammed bulb pile, it is characterised in that:Screw thread pile body (1) including top, it is solid in screw thread pile body (1) lower end Surely it is connected with and rams enlarged footing (2).
2. a kind of screw thread rammed bulb pile according to claim 1, it is characterised in that:The embedded connection of the screw thread pile body (1) The rammer enlarged footing (2).
3. a kind of screw thread rammed bulb pile according to claim 1, it is characterised in that:The screw thread pile body (1) is that pile body is whole Cast-in-place concrete pile with concrete thread.
4. a kind of screw thread rammed bulb pile according to claim 1, it is characterised in that:The screw thread pile body (1) is pile body part Cast-in-place concrete pile with concrete thread.
5. a kind of screw thread rammed bulb pile according to claim 1, it is characterised in that:The rammer enlarged footing (2) uses filler material For concrete.
6. a kind of screw thread rammed bulb pile according to claim 1, it is characterised in that:The rammer enlarged footing (2) uses filler material Part is concrete.
CN201820132297.0U 2018-01-26 2018-01-26 A kind of screw thread rammed bulb pile Active CN208023566U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108049401A (en) * 2018-01-26 2018-05-18 刘淼 A kind of screw thread rammed bulb pile and its construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108049401A (en) * 2018-01-26 2018-05-18 刘淼 A kind of screw thread rammed bulb pile and its construction method

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