CN209243711U - A kind of compacted thread major diameter cylinder stake and its pile-forming apparatus - Google Patents
A kind of compacted thread major diameter cylinder stake and its pile-forming apparatus Download PDFInfo
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- CN209243711U CN209243711U CN201821349333.5U CN201821349333U CN209243711U CN 209243711 U CN209243711 U CN 209243711U CN 201821349333 U CN201821349333 U CN 201821349333U CN 209243711 U CN209243711 U CN 209243711U
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- pile
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- stake
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- concrete
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Abstract
The utility model provides a kind of compacted thread major diameter cylinder stake and its pile-forming apparatus, this tin stake is a kind of large diameter tubular, outside is screwed, the cast-in-place concrete pile pile bodies of crowd in-out effects are generated to surrounding soil, the pile body wall thickness is the 18%~25% of outer diameter size, the pile body is formed by filling concrete, the pile body lower part is equipped with annular pile top, and pile body outside is coarse thread trapezoidal thread.The utility model additionally provides a kind of pile-forming apparatus to match with this tin stake.Pile body is designed as cylinder stake by the utility model, greatly reduces concrete amount, reduces engineering cost.Meanwhile pile body outside has coarse thread trapezoidal thread, helicitic texture makes to generate a mechanical snap effect between stake soil, generates shearing resistance in thread segment, substantially increase pile body bearing capacity.
Description
Technical field
The utility model relates to the realm of building construction, and in particular to a kind of compacted thread major diameter cylinder stake and its pile dress
It sets.
Background technique
With the rapid development of China's engineering construction, all kinds of highways, railway, the infrastructural projects such as bridge are more and more.
In all kinds of engineering constructions, generally there is higher requirement to basic settlement after construction and differential settlement.Therefore, to the place of ground
Reason has extremely important engineering significance.Currently, in soft soil foundation, when shallow foundation cannot meet foundation strength and deformation is wanted
Frequently with pile foundation when asking.Using pile foundation reinforcement soft soil foundation, have speed of application fast, short time limit, consumption material is few, construction letter
Just the advantages that, therefore pile foundation reinforcement is increasingly becoming the foundation reinforcement method being most widely used.
Compaction thread is a kind of stake formed using conventional concrete perfusion and independent construction.Around its pile body
Helicitic texture make stake soil between acting surface increase, to increase side friction.In addition, this helicitic texture also makes stake soil
Between generate the effect of mechanical snap, generate shearing resistance in thread segment, substantially increase pile body bearing capacity.Compaction thread has
The advantages that intensity is high, short time limit, and effect is high, and sedimentation is small, and antidetonation does not pollute, and construction and pile quality be not by influence on groundwater, mesh
Preceding application success in engineering practice.But compaction thread is not suitable for being made into large diameter pile.If one, be made into it is compacted big
Diameter stake then needs to squeeze a large amount of surrounding soils, can generate strong soil compaction effect, leads to damage of soil body, land upheaval, in a clump of piles
In, it also results in neighbouring molded stake and generates floating.Secondly, due to the extruding degree to the soil body it is excessive, the resistance of piling
Will be excessive, so that pile efficiency reduces, constructional difficulties.Thirdly, when compaction thread is made into large diameter pile, concrete amount
Greatly, it is unfavorable for giving full play to material property, and cost is higher.
In view of this, being studied improvement aiming at the problem that current compaction thread is not suitable for being made into large diameter pile, provide
A kind of compacted thread major diameter cylinder stake, it is intended to by the technology, achieve the purpose that solve the problems, such as and improve practical value.
Utility model content
The utility model aim is to provide a kind of compacted thread major diameter cylinder stake, if being made into greatly with solving compaction thread
The technical issues of diameter stake is by the strong soil compaction effect of generation.
To achieve the above object, the utility model provides a kind of compacted thread major diameter cylinder stake, a kind of large diameter tubular
, outside it is screwed, to surrounding soil generate crowd in-out effects cast-in-place concrete pile pile bodies, the pile body wall thickness be outer diameter
The 18%~25% of size, the pile body are formed by filling concrete, and the concrete prepares in advance and is transported to construction now
, concrete test block is done in sampling in work progress, and measures 28 day age compression strength, and compression strength is not less than design requirement；
The pile body lower part is equipped with annular pile top, and pile body outside is coarse thread trapezoidal thread, and the coarse thread trapezoidal thread spacing is 700mm
~900mm, thread out reach are 100-150mm, and thread thickness as outside is 60-80mm, and thread inner thickness is 145-
175mm。
Further, the annular pile top material is steel.
The utility model additionally provides a kind of pile-forming apparatus of compacted thread major diameter cylinder stake, the compacted thread major diameter
Cylinder stake be a kind of large diameter tubular, outside it is screwed, to surrounding soil generate crowd in-out effects cast-in-place concrete pile stakes
Body, the pile body wall thickness are the 18%~25% of outer diameter size, and the pile body is formed by filling concrete, and the concrete shifts to an earlier date
Construction site is prepared and is transported to, concrete test block is done in sampling in work progress, and measures 28 day age compression strength, resistance to compression
Intensity is not less than design requirement；The pile body lower part is equipped with annular pile top, and pile body outside is coarse thread trapezoidal thread, the coarse thread
Trapezoidal thread spacing is 700mm~900mm, and thread out reach is 100-150mm, and thread thickness as outside is 60-80mm, thread
Inner thickness is 145-175mm；The pile-forming apparatus main body of the compacted thread major diameter cylinder stake is perforating device, the perforating device
Including inner sleeve, threaded outer tube, annular pile top and hopper and pass through attachment device company with outer tube at the inner sleeve
It is connected together, hopper is equipped on the outside of outer sleeve upper, the annular pile top upper end is equipped with boss, and lower end is taper, described interior
Casing is connected with the interior step bearing surface of annular pile top, and outer tube is connected with the outer step bearing surface of annular pile top, the inner sleeve
The size of pipe, outer tube and annular pile top is corresponding with stake design size, and threaded outer tube outside screw and stake design
Screw thread is corresponding.
The utility model has the following beneficial effects:
(1) a kind of compacted thread major diameter cylinder stake provided by the utility model, pile body wall thickness be outer diameter size 18%~
25%, cylinder stake can be effectively controlled soil compaction and pore water pressure, if compensating for compaction thread is made into large diameter pile for the strong of generation
The shortcomings that soil compaction effect.Pile body is designed as cylinder stake by the utility model, greatly reduces concrete amount, reduce engineering at
This.With compared with diameter solid stake, the soil compaction effect that the pile body structure of tubular generates work progress reduces 56.2%~
67.2%.For stake identical for sectional area, cylinder stake is far longer than contact of the general stake with the soil body with the contact area of the soil body
Area, therefore increase pile side resistance.Meanwhile the coarse thread trapezoidal thread structure around pile body makes to generate close machine between stake soil
Tool interlocking, so that material property is more fully utilized.Pile body outside has coarse thread trapezoidal thread, the coarse thread ladder
Shape flight pitch is 700mm~900mm, and thread out reach is 100-150mm, and thread thickness as outside is 60-80mm, in thread
With a thickness of 145-175mm, which makes to generate a mechanical snap effect between stake soil for side, generates shearing resistance in thread segment
Power substantially increases pile body bearing capacity.
(2) a kind of compacted thread major diameter cylinder stake provided by the utility model, pile body lower part is equipped with annular pile top, downward
During drilling, annular pile top is equivalent to drill bit.Internal and external casing withstands annular pile top, and will pressure during being drilled down into
Power passes to annular pile top, is drilled down into.The annular pile top and the pile-forming apparatus of the compacted thread major diameter cylinder stake match,
Convenient for the construction of compacted thread major diameter cylinder stake, annular pile top is separated with the two-tube of perforating device after concreting, annular pile top
Bottom is stayed in, collectively forms pile body with the concrete of perfusion.
Other than objects, features and advantages described above, there are also other purposes, feature and excellent for the utility model
Point.Below with reference to figure, the utility model is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.In attached drawing
In:
Fig. 1 is that the drilling machine of the preferred embodiment in the utility model is in place, buries annular pile top, connects perforating device schematic diagram；
Fig. 2 is that the perforating device of the preferred embodiment in the utility model is drilled down into pore-forming schematic diagram；
Fig. 3 is that the immersed tube of the preferred embodiment in the utility model reaches designed elevation schematic diagram；
Fig. 4 is the preferred embodiment in the utility model to two-tube cavity concrete perfusion schematic diagram；
Fig. 5 is that the reversed turning of the preferred embodiment in the utility model promotes two-tube schematic diagram；
Fig. 6 is that the two-tube of the preferred embodiment in the utility model is promoted to ground schematic diagram；
Fig. 7 is the drilling machine displacement of the preferred embodiment in the utility model, places steel reinforcement cage, completes single pile construction schematic diagram；
Fig. 8 is the internal and external casing and annular pile top connection schematic diagram of the preferred embodiment in the utility model.
Wherein, 1, inner sleeve；2, threaded outer tube；3, outer tube outside screw；4, annular pile top；5, attachment device；
6, hopper；7, concrete；8, steel reinforcement cage；9, pile body after pile；10, interior step bearing surface；11, outer step bearing surface.
Specific embodiment
The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be according to power
Benefit requires to limit and the multitude of different ways of covering is implemented.
Referring to Fig. 1 to Fig. 7, a kind of compacted thread major diameter cylinder stake, main body is a kind of large diameter tubular, outside with spiral shell
Line, to surrounding soil generate crowd in-out effects cast-in-place concrete pile pile body, the pile body wall thickness be outer diameter size 18%~
25%, commonly using outer diameter is 800mm, 1000mm, 1200mm, 1500mm etc..The pile body is formed by filling concrete, the coagulation
Soil prepares in advance and is transported to construction site, and concrete test block is done in sampling in work progress, and measures 28 day age pressure resistance
Degree, compression strength are not less than design requirement.Wherein, composite foundation cylinder stake reinforcement strength grade of concrete not preferably less than C15, builds
Build a pile concrete strength grade not preferably less than C30.The pile body lower part is equipped with annular pile top, it is preferred that the annular pile top
Material is steel.Pile body outside is coarse thread trapezoidal thread, and the coarse thread trapezoidal thread spacing is 700mm~900mm, outside thread
Stretching distance is 100-150mm, and thread thickness as outside is 60-80mm, and thread inner thickness is 145-175mm, which makes
A mechanical snap effect is generated between stake soil, is generated shearing resistance in thread segment, is substantially increased pile body bearing capacity.With same diameter
Solid pile is compared, and wall thickness provided by the utility model is that the pile body structure of 18%~25% tubular of outer diameter size makes work progress
The soil compaction effect of generation reduces 56.2%~67.2%.Pile body wall thickness is too small, easily leads to pile body bearing capacity deficiency, wall thickness is outer diameter
Compared with wall thickness is the stake of outer diameter 20%, pile body ultimate bearing capacity reduces 40%~50% for 10% stake, in big load or partially
Under the effect of heart pressure, pile body is easily destroyed, and wall thickness is too small, higher to construction requirement, is not easy to construct.Pile body wall thickness mistake
Greatly, strong soil compaction effect can be generated, and concrete amount increases, wall thickness is the stake of outer diameter 30% and wall thickness is outer diameter 20%
Stake is compared, and soil compaction effect increases 41.2%, and concrete amount increases 31.3%, and strong soil compaction effect will lead to drilling resistance
Power increases, and constructional difficulties, concrete amount is excessive, is unfavorable for giving full play to material property.
The utility model additionally provides a kind of pile-forming apparatus of compacted thread major diameter cylinder stake, and main body is perforating device, institute
Stating perforating device includes inner sleeve, threaded outer tube, annular pile top and hopper, the inner sleeve and passes through company with outer tube
Connection device links together, and hopper is equipped on the outside of outer sleeve upper, and the annular pile top upper end is equipped with boss, and lower end is cone
Shape, the inner sleeve are connected with the interior step bearing surface of annular pile top, and outer tube is connected with the outer step bearing surface of annular pile top,
As shown in Figure 8.The size of the inner sleeve, outer tube and annular pile top is corresponding with stake design size, threaded housing
Pipe outside screw is corresponding with stake design screw thread.
It is constructed using the pile-forming apparatus of the compacted thread major diameter cylinder stake to the compacted thread major diameter cylinder stake, specifically
Steps are as follows:
Step A: the outer tube 2 and annular pile top of inner sleeve 1, threaded 3 and hopper 6 are made according to pile body design size
4.For example, when pile body inner and outer diameter is respectively 600mm and 1000mm, pile body wall thickness is 200mm.Inner sleeve pipe diameter is 600mm, outside
Casing diameter is 1000mm, has coarse thread trapezoidal thread, thread pitch 800mm, the overhanging 120mm of thread, spiral shell on the outside of outer tube
Thickness as outside is respectively 70mm and 160mm in tooth.
Step B: drilling machine is in place, buries annular pile top 4, makes the internal and external casing 1 and 2 of perforating device respectively against in pile top 4
Outer step bearing surface examines the verticality of perforating device.
Step C: starting drilling machine, internal and external casing 1 and 2 is positive simultaneously to turn round and applies downward plus-pressure, makes internal and external casing 1
It is drilled down into simultaneously with 2.Rotational speed and stressed size are controlled, matches rotational speed with subsidence velocity, subsidence velocity
Equal to the product of 3 screw pitch of screw thread on revolution revolving speed and outer tube 2.I.e. two-tube 1 and 2 every rotations one week, should sink a screw pitch
Highly.When immersed tube 1 and 2 reaches length design absolute altitude, stop drilling.
Step D: by 6 concrete perfusion 7 of hopper, fall into concrete seven in the toroidal cavity between inner and outer pipes 1 and 2.
After concrete seven reaches appropriate in step E: two-tube 1 and 2 cavitys, start drilling machine, reversed turning simultaneously applies upward mention
Pull out force, the concrete perfusion 7 when promoting two-tube.It controls rotational speed and promotes the size of power, make rotational speed and promote speed
Matching promotes the product that speed is equal to 3 screw pitch of screw thread on revolution revolving speed and outer tube 2.I.e. two-tube 1 and 2 every rotations one week, should mention
Rise the height of a screw pitch.
Step F: after two-tube 1 and 2 are promoted to ground, stop concrete perfusion 7.
When use plain concrete pile is not able to satisfy requirement for bearing capacity, and pile body bears pulling force, need to dispose suitable steel
Muscle cage.No person does not need to place steel reinforcement cage.Specifically: step F filling concrete finishes, and after removing internal and external casing, slings at once
Steel reinforcement cage simultaneously positions, in the concrete that steel reinforcement cage insertion has been perfused.The steel reinforcement cage is welded by Reinforcement and stirrup
Made of cylindric bar construction, diameter is the average value of cylinder stake internal-and external diameter.
Step G: clearing up two-tube recycling, and drilling machine moves to next hole location, and next construction is carried out by above-mentioned steps.
Compacted thread major diameter cylinder pile construction method provided by the utility model, construction technology is relatively simple, pile matter
Amount is stablized, easily controllable.In formation of pile, mud-less pollution is not unearthed, and is weak Squeezing Soil Pile, environmental-friendly.The construction method
It can guarantee construction safety, high-quality, efficient, have important engineering significance for reinforced soft soil ground.
According to construction method provided by the utility model, formed a kind of large diameter tubular, outside it is screwed, right
The cast-in-place concrete pile pile body of surrounding soil generation crowd in-out effects.Pile body is tubular, greatly reduces concrete amount, is reduced
Engineering cost.Pile body outside has coarse thread trapezoidal thread, and helicitic texture makes to generate a mechanical snap effect between stake soil,
Thread segment generates shearing resistance, makes full use of material property, substantially increases pile body bearing capacity, with important engineering significance and pushes away
Wide application value.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (3)
1. a kind of compacted thread major diameter cylinder stake, which is characterized in that a kind of large diameter tubular, outside it is screwed, to week
The cast-in-place concrete pile pile body that the soil body generates crowd in-out effects is enclosed, the pile body wall thickness is the 18%~25% of outer diameter size, described
Pile body is formed by filling concrete, and the concrete is to prepare and be transported to construction site in advance, is sampled and is done in work progress
Concrete test block, and 28 day age compression strength is measured, compression strength is not less than the concrete of design requirement；The pile body lower part
Equipped with annular pile top, pile body outside is coarse thread trapezoidal thread, and the coarse thread trapezoidal thread spacing is 700mm~900mm, thread
Out reach is 100-150mm, and thread thickness as outside is 60-80mm, and thread inner thickness is 145-175mm.
2. a kind of compacted thread major diameter cylinder stake according to claim 1, which is characterized in that it is described annular pile top material be
Steel.
3. a kind of pile-forming apparatus of compacted thread major diameter cylinder stake, which is characterized in that the compacted thread major diameter cylinder stake is one
Kind of large diameter tubular, outside is screwed, the cast-in-place concrete pile pile bodies of crowd in-out effects, the stake are generated to surrounding soil
Body wall thickness is the 18%~25% of outer diameter size, and the pile body is formed by filling concrete, and the concrete is to prepare in advance
And it is transported to construction site, concrete test block is done in sampling in work progress, and measures 28 day age compression strength, and compression strength is not
Less than the concrete of design requirement；The pile body lower part is equipped with annular pile top, and pile body outside is coarse thread trapezoidal thread, described thick
Tooth trapezoidal thread spacing is 700mm~900mm, and thread out reach is 100-150mm, and thread thickness as outside is 60-80mm, spiral shell
Tooth inner thickness is 145-175mm；The pile-forming apparatus main body of the compacted thread major diameter cylinder stake is perforating device, the pore-forming
Device includes inner sleeve, threaded outer tube, annular pile top and hopper, the inner sleeve and passes through attachment device with outer tube
It links together, hopper is equipped on the outside of outer sleeve upper, the annular pile top upper end is equipped with boss, and lower end is taper, described
Inner sleeve is connected with the interior step bearing surface of annular pile top, and outer tube is connected with the outer step bearing surface of annular pile top, described interior
The size of casing, outer tube and annular pile top is corresponding with stake design size, and threaded outer tube outside screw is set with stake
It is corresponding to count screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821349333.5U CN209243711U (en) | 2018-08-21 | 2018-08-21 | A kind of compacted thread major diameter cylinder stake and its pile-forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821349333.5U CN209243711U (en) | 2018-08-21 | 2018-08-21 | A kind of compacted thread major diameter cylinder stake and its pile-forming apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209243711U true CN209243711U (en) | 2019-08-13 |
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ID=67516230
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821349333.5U Expired - Fee Related CN209243711U (en) | 2018-08-21 | 2018-08-21 | A kind of compacted thread major diameter cylinder stake and its pile-forming apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN209243711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914928A (en) * | 2018-08-21 | 2018-11-30 | 中铁二十四局集团福建铁路建设有限公司 | A kind of compacted thread major diameter cylinder stake, pile-forming apparatus and its construction method |
-
2018
- 2018-08-21 CN CN201821349333.5U patent/CN209243711U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914928A (en) * | 2018-08-21 | 2018-11-30 | 中铁二十四局集团福建铁路建设有限公司 | A kind of compacted thread major diameter cylinder stake, pile-forming apparatus and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 Termination date: 20210821 |