CN106192996B - A kind of T shape drilling tools of construction method and T shapes the cast pile driving construction of T shapes stake - Google Patents
A kind of T shape drilling tools of construction method and T shapes the cast pile driving construction of T shapes stake Download PDFInfo
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The present invention relates to building foundation process field, spy is related to a kind of construction method of T shapes stake and the T shape drilling tools of T shapes cast pile driving construction.The present invention uses the slewing drilling machine of large torque, and construction machinery is installed through in place, centering, leveling common process；Heavy in section pile cover hole is formed using augers；After forming heavy in section pile cover hole, augers is in original position and stationary state, and drilling rod continues to rotate, and advances downwardly the drilling rod hole that extruding and expanding drilling tool forms small bore pile body；Rotary drilling process makes screw thread cutter head prominent to drill bit outside, and screwer capitiform rolls out a side screw thread into negative angle point of contact direction in the stake rod aperture of small bore pile body；The remaining soil of compacted screw thread T shapes drilling tool and pile cover is rotated and upgraded to ground.Methods and apparatus of the present invention can improve the bearing capacity of pile foundation, and with laborsaving, and the used time is few, it is efficient the advantages of.
Description
Technical field
The present invention relates to building foundation process field, spy is related to a kind of construction method of T shapes stake and the cast stake of T shapes is applied
The T shape drilling tools of work.
Background technology
The development maked rapid progress with National Industrial and residential construction area, the requirement for building basis is also increasingly
Height, especially widely applied all kinds of pile foundations.It is generally all adopted on the basis of the buildings such as skyscraper, bridge and industrial premises
With conventional drilling cast-in-place concrete pile.
In the engineerings such as foundation stabilization, foundation pit retaining wall, reservoir leakage stoppage, usually using the CIP engineering methods of casting reinforced concrete stake
With PIP engineering methods.It is but both defective.Chinese invention patent " 86100705 applying date of bore slurry pressuring pile-forming application number：
1986.01.25 it " (expires) and discloses a kind of new method that reinforced concrete pile is perfused, overcome between PIP engineering methods pile body and the soil body
The shortcomings that gap：" it is bored into predetermined depth.By being located at the nozzle of the drill bit high-pressure mortar spraying into hole while brill is carried, until slurry
Until liquid reaches the position of no collapse hole danger；Steel reinforcement cage is placed after trip-out in hole, throws full pellet, and is put at least one directly
The high-pressure slip-casting sebific duct at through-hole bottom makees second pulp feeding with high pressure from bottom hole, until slurries reach aperture ".
Chinese invention patent " a kind of construction method of bored concrete pile, application number：96119602.5 the applying date：1996-09-
01, " disclose a kind of Screw Pile technical solution for improving bearing capacity：" 1. are made preexisting hole with boring machine, and 2. using with full spiral shell
The long screw auger drilling to completion of line, concrete or mortar are pumped out by drilling rod bottom, the Ti Zuan sides perfusion coagulation in rotation
Native or mortar fills stake holes until ground, forms pile body, and steel reinforcement cage is sunk to plain mix by 3. by being placed in the vibrator vibration at the top of it
Screw Pile is made in solidifying soil pile body, the decrease speed and rotary speed of screw thread are controlled in going down process, reversely rotates and promotes spiral shell
Line bores, and the promotion speed of rotary speed should keep synchronous and matching, advantage are as lower brill：The bored concrete pile of making by
It is threaded in pile body, significantly improves the bearing capacity ratio common filling pile of stake.”
In addition the CFG stakes having been widely used (refer to the mixture institute of the compositions such as sand, rubble, cement, flyash or slag
The pile body of formation)) in the application process of processing composite foundation, it need to often complete and after the age of concrete arrives, into
Row excavates pile crown, cuts the cumbersome process such as stake, formwork supporting plate, and " pile cover " is installed additional at stake top position, and master operation cannot use machinery again
It is turned into industry, leads to that the long in time limit of engineering, efficiency are low, of high cost, effect is poor.
Chinese invention patent " the process application number of nail-shaped pile pile：200310106224.2 the applying date：2003-11-
07, Southeast China University " a kind of process of nail-shaped pile pile is disclosed, it is that one kind is suitable for deep soft soil foundation treatment process side
Method, operating procedure are as follows：Be open steel pile casting (2) big, that under shed is small in setting, and the small openend of steel pile casting (2) is located at
Ground；Immersed tube (1) is inserted into steel pile casting, in the upper opening of steel pile casting, with bolt (3) laterally inserted immersed tube, makes the two of bolt
End is stuck in the upper opening of steel pile casting, pushes immersed tube with immersed tube machinery, steel pile casting is first pressed onto to scheduled depth；It extracts and inserts
Pin then proceedes to push immersed tube, and immersed tube is made to be pressed onto design stake depth；Immersed tube is extracted upwards, while plain concrete is backfilled into pipe
Or the materials such as CFG, then immersed tube pushed expanding；Immersed tube is lifted up at steel pile casting, is extracted together with steel pile casting, and is perfused mixed
The materials such as solidifying soil or CFG, material is thus formed the plain concrete pile with cap or CFG.
But this method construction equipment requirement horsepower is too big, energy consumption is excessively high, is unfavorable for using.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of construction method of T shapes cast stake and T shapes cast pile driving constructions
T shape drilling tools, in formation of pile, make the soil body of a side periphery be extruded fill it is close, can with the T-shaped pile body of shape it is disposable into
Stake, can improve the bearing capacity of pile foundation, and with laborsaving, and the used time is few, it is efficient the advantages of.
The technical scheme is that：A kind of construction method of T shapes cast stake, first drills out T shape stake holes, then to T shapes
Concrete perfusion in stake holes forms the T shape stakes with cap, it is characterised in that：The slewing drilling machine of drilling is with augers and squeezed
Drilling tool, during drilling rod downlink, after augers drills out pile cover hole no longer downlink, extruding and expanding drilling tool continuation drill out a bar downwards, brill
It returns and carries after to stake bottom, augers and extruding and expanding drilling tool return the hollow conveying pipeline continuously perfusion cast into stake holes for carrying drilling rod in whole process
Material, until to the T-shaped cast stake of the stake holes degree of lip-rounding, augers is stepped down before cast nozzle reaches.
The construction method of T shapes cast stake as described above, it is characterised in that：During drilling rod is returned and carried, in extruding and expanding drilling tool
Screw thread cutter head stretch out, extruding and expanding drilling tool rotation go up during T shape stakes bar portion formed thread groove, what is be then perfused pours
The screw thread of the T-shaped cast stake of material feeding shape.
The work progress of the present invention, including the slewing drilling machine using large torque, through in place, centering, leveling common process pair
Construction machinery is installed；Heavy in section pile cover hole is formed using augers；After forming heavy in section pile cover hole, augers
In original position and stationary state, drilling rod continues to rotate, and advances downwardly the drilling rod hole that extruding and expanding drilling tool forms small bore pile body；Abrasion drill
Into process, make screw thread cutter head to prominent on the outside of drill bit, screwer capitiform is into negative angle point of contact direction, in the stake bar of small bore pile body
A side screw thread is rolled out on hole；By compacted screw thread T shapes drilling tool (being made of augers and extruding and expanding drilling tool) and the remaining soil of pile cover
It rotates and upgrades to ground.Auger boring method using the present invention, than the pushing side of the process of nail-shaped pile pile
Method is laborsaving, and the used time is few, efficient.In formation of pile, the soil body of a side periphery is made to obtain filling close, and the spiral shell on the outside of pile body
Line can greatly improve foundation bearing capacity, can effectively solve stake top end to mattress layer with the disposable pile of the T-shaped pile body of shape
The puncture problem of formation can improve the bearing capacity of pile foundation.
T shape stakes prepared by the method for the present invention, the stake shank diameter ranging from 200~800mm, a diameter of bar of pile cover
1.5~2.5 times of diameter；The height of pile cover is 1.2~2.5 times of stake shank diameter.
According to compacted screw thread T shape stakes as described above, it is characterised in that：The pile cover, the material of stake bar be concrete,
One kind or its several combination in conditioned soil or low-intensity mixture containing curing agent.
A kind of T shape drilling tools of T shapes cast pile driving construction, including drilling rod and drill bit, logical perfusion pore in having among drilling rod,
It is characterized in that：Drill bit includes augers mechanism and extruding and expanding drilling tool mechanism, and augers mechanism is sleeved on drilling rod, drilling rod end
Connect extruding and expanding drilling tool mechanism；
Wherein augers mechanism includes the first augers, internal key, helical blade, positioning joint and limit switch；
Extruding and expanding drilling tool mechanism includes extruding and expanding drilling tool ontology, lifting telescopic, expansion joint, Ji Luo mechanisms, torsion pass connecting plate, the
Spud in head for two augers, squeezed gauge paste block and bottom；
The pipe that first augers leads in being, central hollow section setting drilling rod, outside the first augers
Helical blade is set, and helical blade is welded on the first augers；First augers interior welds are provided with internal key, top
The limit switch of no less than 2 is provided with, positioning joint is set in bar first half；The extruding and expanding drilling tool ontology is arranged on limiting
Below connector, extruding and expanding drilling tool ontology leads in being, extruding and expanding drilling tool body upper part is with drilling rod by lifting telescopic, expansion joint axis
It is socketed to flexible keyed, extruding and expanding drilling tool body lower part is bolted to connection with torsion pass connecting plate；The extruding and expanding drilling tool mechanism
Including at least a Chu Ji spiral shells mechanism, Ji Luo mechanisms are arranged on extruding and expanding drilling tool ontology, and Ji Luo mechanisms include screw thread cutter head, wedge shape is led
Plate, axis pin, screw thread cutter head are fixed on by axis pin on extruding and expanding drilling tool ontology, and wedge slide is arranged on the inside of screw thread cutter head, squeezed
Gauge paste block is arranged on the extexine of extruding and expanding drilling tool ontology；Wedge slide is arranged on lifting telescopic.
The T shape drilling tools of pile driving construction are poured into a mould according to T shapes as described above, it is characterised in that：The extruding and expanding drilling tool ontology
External key is further included, internal key is in bond styles with external key when being bored under drilling rod.
The T shape drilling tools of pile driving construction are poured into a mould according to T shapes as described above, it is characterised in that：The lifting telescopic and
Expansion joint is axially movable connection using polygon key either spline mode, and lifting telescopic is fixedly connected with drilling rod, stretches
The lower end of reducer coupling head is fixedly connected with torsion pass connecting plate.
The T shape drilling tools of pile driving construction are poured into a mould according to T shapes as described above, it is characterised in that：The expansion joint tail portion
It is connect by wedge slide, axis pin, torsion pass connecting plate with extruding and expanding drilling tool ontology.
The T shape drilling tools of pile driving construction are poured into a mould according to T shapes as described above, it is characterised in that：The extruding and expanding drilling tool mechanism
Including heat-insulated short tube, heat-insulated short tube is arranged between the second augers and torsion pass connecting plate.
The advantages and positive effects of the present invention：
1st, cost is reduced：Due to the T-shaped structure of the pile body of disposable pile, reduce pile crown and excavate, cut stake, formwork supporting plate etc.
Cumbersome process improves the work efficiency of engineering, reduces construction cost.
2nd, it is more laborsaving than the pushing method of the process of nail-shaped pile pile, and the used time is few, it is efficient.
3rd, in formation of pile, the soil body of a side periphery is made to obtain filling close, and the screw thread on the outside of pile body can greatly improve ground
Base bearing capacity can effectively be solved the puncture that stake top end forms mattress layer and be asked with the disposable pile of the T-shaped pile body of shape
Topic can improve the bearing capacity of pile foundation.
4th, gas-permeable channels are formed between adjacent gauge patch, discharge hot gas and aqueous vapor, are slowed down into brill resistance.
Description of the drawings
Fig. 1 is：The compacted threaded pile body structure schematic diagram of screw thread T shape stakes；
Fig. 2 is：The pile body structure schematic diagram of compacted screw thread T shapes stake non-threaded；
Fig. 3 is：The structure chart of extruding and expanding drilling tool when being drilled down into；
Fig. 4 is：The structure chart of extruding and expanding drilling tool when promoting drilling；
Fig. 5 is：For drilling tool structure vertical view；
Fig. 6 is：Sectional view (Fig. 3 A-A to structure diagram) of the screw thread cutter head in contraction state；
Fig. 7 is：Sectional view (Fig. 4 B-B direction structure diagram) of the screw thread cutter head in the state of stretching；
Fig. 8 is：Screw thread cutter head structure stereogram；
Fig. 9 is：Drilling machine in pile-formation process flow is in place, centering, leveling；
Figure 10 is：Drilling, augers detach clockwise downwards；
Figure 11 is：Continue squeezed clockwise downwards creep into whole hole；
Figure 12 is:Slightly stop, promoted, screwer head process goes out, and drilling is while squeezed clockwise, rolled thread；It synchronizes and pours
Build concrete；
Figure 13 is：Drilling is continued to lift up until entering in augers, rotates jointly and is promoted, while continuously uninterruptedly pour
Build concrete；
Figure 14 is：Pile, telephone-moving.
Reference sign：It is T shape stakes 1A, pile cover 2A, stake bar 3A, pile body screw thread 4A, drilling rod 1, the first augers 2, interior
Key 3, helical blade 4, limit switch 5, positioning joint 6, external key 7, extruding and expanding drilling tool ontology 8, lifting telescopic 9, expansion joint 10,
Screw thread cutter head 11, wedge slide 12, axis pin 13, torsion pass connecting plate 14, the second augers 15, bottom spud in first 16, axis pin 17, heat-insulated
Short tube 18, squeezed gauge paste block 19.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described.
As shown in Figure 1, a kind of compacted screw thread T shapes stake of the present invention includes T shape stakes 1A, pile cover 2A, stake bar 3A, pile body screw thread
4A, T shape stake 1A include pile cover 2A and stake bar 3A.Wherein pile cover 2A is arranged on above a bar 3A, and pile cover 2A diameters are big, stake bar 3A
Diameter is small, and T shape stakes 1A is made to be a kind of small cylindrical masses stake of the big lower diameter of upper diameter, pile body structure it is symmetrical in
Heart section shape is "T"-shaped.As shown in Figure 1, the outside non-threaded of the pile cover 2A of the present invention, the outside setting pile body of bar 3A
Screw thread 4A.Pile cover 2A, the stake bar 3A of the present invention can complete disposable pile.
As another embodiment of the present invention, the outside of bar 3A also can be without non-threaded, as shown in Figure 2.
In the present invention, stake bar 3A diameter ranges are generally 200~800mm, and the 1.5 of a diameter of bar 3A diameter of pile cover 2A
~2.5 times；The height of pile cover 2A is 1.2~2.5 times of stake bar 3A diameters.
Pile cover 2A in the present invention, stake bar 3A material be concrete, conditioned soil or the low-intensity mixture containing curing agent
In one kind or its several combination.The concrete of different brackets label can be used in concrete；Conditioned soil is different curing agent
The conditioned soil of volume, such as using the conditioned soil of cement or lime intermingled quantity.
As shown in Figure 3 and Figure 4, the compacted screw thread T shape drilling tools that use of the present invention, including drilling rod 1 and drill bit, among drilling rod 1
The perfusion pore led in having, drill bit include augers mechanism and extruding and expanding drilling tool mechanism, and augers mechanism is sleeved on drilling rod 1,
1 end of drilling rod connection extruding and expanding drilling tool mechanism.
As shown in Figure 3 and Figure 4, augers mechanism of the invention include the first augers 2, internal key 3, helical blade 4,
Positioning joint 6, limit switch 5；Extruding and expanding drilling tool mechanism is led including lifting telescopic 9, expansion joint 10, screw thread cutter head 11, wedge shape
Plate 12, axis pin 13, torsion pass connecting plate 14, the second augers 15, bottom, which spud in, first 16 to be formed.
As shown in Figure 3 and Figure 4, augers mechanism concrete structure of the invention is：The pipe that first augers 2 leads in being
Son, central hollow section setting drilling rod 1,2 outside setting helical blade 4 of the first augers, helical blade 4 are welded on the first spiral shell
In rotary drill 2.First augers, 2 interior welds are provided with internal key 3, and top is provided with the limit switch 5 of no less than 2,
1 first half of drilling rod sets positioning joint 6.It is the first augers 2 that drilling rod 1 leads in, in positioning joint in drilling process
Under the action of 6 limiting and limit switch 5, axial limiting and fixation, as shown in Figure 3.On internal key 3 and extruding and expanding drilling tool ontology 8
External key 7, in bond styles, drilling rod 1 drives the first augers 2 to be rotated clockwise, until the projected depth of pile cover, forms
After the pile cover 2A of compacted screw thread T shape stakes, revolution is temporarily ceased, limit switch 5 is operated, makes the first augers 2 and extruding and expanding drilling tool
8 axial separation of ontology.
As shown in Figure 3 and Figure 4, extruding and expanding drilling tool mechanism concrete structure of the invention is：Extruding and expanding drilling tool mechanism forefront is crowded
Expanding drilling tool ontology 8, extruding and expanding drilling tool ontology 8 are arranged on 6 lower section of positioning joint.Extruding and expanding drilling tool ontology 8 leads in being, extruding and expanding drilling tool sheet
8 top of body and drilling rod 1 are by lifting telescopic 9,10 axial stretching keyed of expansion joint is socketed, 8 lower part of extruding and expanding drilling tool ontology with
Torsion pass connecting plate 14 is bolted to connection.The lower end of torsion pass connecting plate 14 is fixedly welded with the second augers 15 and heat-insulated short tube
18, cone is equipped between the second augers 15 and torsion pass connecting plate 14 excessively, is equipped on the outside of the cylinder of the second augers 15
With the helical blade of the circle such as 8 outer diameter of extruding and expanding drilling tool ontology, the lower part of the second augers 15 spuds in first 16 the bottom of equipped with, passes through axis pin
17 hingedly connecteds.
As shown in figure 4, lifting telescopic 9, expansion joint 10, lifting are provided in the extruding and expanding drilling tool ontology 8 of the present invention
Telescopic 9 and expansion joint 10 are axially movable connection using polygon key either spline mode, and lifting telescopic 9 is provided with
Wedge slide 12.Lifting telescopic 9 is fixedly connected with drilling rod 1, and the lower end of expansion joint 10 is fixedly connected with torsion pass connecting plate 14.It squeezes
Expand the extexine that gauge paste block 19 is arranged on extruding and expanding drilling tool ontology 8, the squeezed gauge paste block 19 of axial strip is to the second spiral
The soil that drill bit 15 has bored is pushed hole wall to and is compacted, and gas-permeable channels are formed between adjacent squeezed gauge paste block 19, discharges hot gas and water
Gas slows down into resistance is bored, as shown in Figure 6.
As shown in Figure 4, Figure 5, Figure 6 and Figure 7, expansion joint 10 of the invention is arranged on 9 outside of lifting telescopic, and torsion pass connects
Plate 14 is fixedly connected with lifting telescopic 9, and 14 rear side connection lifting telescopic 9 of torsion pass connecting plate is lifted and is threaded in telescopic 9
Cutter head 11,10 tail portion of expansion joint is connect by wedge slide 12, axis pin 13, torsion pass connecting plate 14 with extruding and expanding drilling tool ontology 8, described
Extruding and expanding drilling tool mechanism include at least a Chu Ji spiral shells mechanism, Ji Luo mechanisms are arranged on extruding and expanding drilling tool ontology 8, and Ji Luo mechanisms include
Screw thread cutter head 11, wedge slide 12, axis pin 13, screw thread cutter head 11 are fixed on by axis pin 13 on extruding and expanding drilling tool ontology 8, and wedge shape is led
Plate 12 is arranged on 11 inside of screw thread cutter head.When being drilled down into, the lifting telescopic 9 of drilling tool and expansion joint 10 are in contraction-like
State, the wedge slide 12 to link with lifting telescopic 9 are displaced downwardly to the extreme lower position of wedge-shaped radial direction, and screw thread cutter head 11 is at this time
Contraction state (see Fig. 6).
When entering promotion and rotary drilling process clockwise, the segment of drillpipe at extruding and expanding drilling tool center is in expansion joint 10 at this time
Position generates axial displacement, band when having larger frictional resistance on the outside of 8 outer diameter of extruding and expanding drilling tool ontology and the stake holes after compacted
Wedge slide 12 on dynamic lifting telescopic 9, and under the effect of wedge slide 12, screw thread cutter head 11 is pushed to be rotated around axis pin 13,
The outside for making screw thread cutter head 11 to drilling tool is prominent, the swing bar cam structure on approximate engineering mechanics, prominent screw thread cutter head
It is formed with negative angle point of contact direction, a side screw thread can be rolled out well.
As shown in figure 4, the extruding and expanding drilling tool mechanism of the present invention includes heat-insulated short tube 18, heat-insulated short tube 18 is arranged on the second spiral
Between drill bit 15 and torsion pass connecting plate 14.
As shown in figure 4, the extruding and expanding drilling tool mechanism of the present invention, which further includes bottom, spuds in first 16, bottom spud in first 16 by axis pin 17 with
Second augers 15.
The all right handed methods of drill bit in the compacted screw thread T shapes stake formation of pile of the present invention, are also fitted
For all counter clockwise direction rotations of drill bit.
The construction method of compacted screw thread T shape stakes of the present invention is：
1) using the slewing drilling machine of large torque, construction machinery is installed through common process such as in place, centering, leveling
(Fig. 9)；
2) stop collar 3 in compacted screw thread T shape drilling tools is mutually stuck by 1 and first augers 2 of drilling rod, revolves drilling rod 1
Turn that the first augers 2 can be driven to rotate, rotation in the direction of the clock is drilled down into, and dregs is along the first augers 2 during drilling
Helical blade exclude aperture, until the heavy in section projected depth of pile body, forms the pile cover 2A of compacted screw thread T shape stakes (such as Figure 10 institutes
Show), the bearing torque extensible member of extruding and expanding drilling tool and screw thread cutter head are in contraction state at this time.
3) after releasing stop collar 3, drilling rod 1 continues to rotate clockwise, then the first augers 2 is because departing from axially and radially
Constraint and limitation, in original position and stationary state, the extruding and expanding drilling tool mechanisms of compacted screw thread T shape drilling tools continue clockwise to
Lower drilling, during pore-forming by compacted screw thread T shapes drilling tool constantly drilling and extruding and expanding drilling tool mechanism pressing body make
Under, the soil body of a side periphery is made to obtain filling close, until stake projected depth, forms the open-hole (Figure 11) of stake bar 3A；
4) slightly stop to immediately enter promotion and rotary drilling process clockwise in a moment, at this time the telescoping connection of extruding and expanding drilling tool mechanism
First 6 generate axial displacement when having larger frictional resistance on the outside of extruding and expanding drilling tool outer diameter and the stake holes after compacted, pass through lifting
Wedge slide 10 on 5 drive telescopic 8 of set moves up, and under the effect of wedge slide 10, screw thread cutter head 9 is pushed to be revolved around axis pin 11
Turn, make screw thread cutter head 9 and screw thread cutter head 20 to drill bit outside prominent, the swing bar cam structure on approximate engineering mechanics,
Prominent screw thread cutter head 20 is formed with negative angle point of contact direction, can roll out a side screw thread well, as shown in Figure 12 and Figure 13.
While promotion is entered with rotary drilling clockwise, casting concrete or cementing material, are allowed to fast in time
Speed fills compacted open-hole and thread-rolling screw space and pile.
5) when entering promotion at rotary drilling clockwise to pile cover 2A, make stop collar 3 by 1 and first auger of drilling rod
First 2 is mutually stuck, and then extruding and expanding drilling tool will rotate clockwise power and go to augers rotation and Synchronous lifting (Figure 14) again,
The remaining soil of pile cover is rotated and upgraded into discharge ground.
6) concrete of continuous placing fills space to the ground of big section row of piles sky and forms pile cover 2A, stake bar in time
3A and pile body screw thread 4A.Can be auxiliary in vibrating head vibration compacting, pile, mobile drill enters next pile driving construction.
The pile body screw thread 4A of compacted screw thread T shape stakes realized using rolling only in drilling process is promoted, the screw thread of pile body
And screw pitch can fully be ensured.But screw thread lead should not deliberately pursue the equal of screw pitch because being influenced by formation factor
Even and consistency need to be only maintained in certain range (diameter of 0.8~1.5 times of minor diameter pile body).
The technique of the compacted screw thread T shape stakes of the present invention is usually just to be applied in the starting stage of pore-forming with creeping into row expanding reach
Work, suitable for that can be cast-in-situ bored pile, cement mixing method, compaction thread, long spiral CFG pile etc..
The advantageous effect of T shapes pile construction method and its drilling tool of the present invention is：
Improve bearing capacity：Mainly by compacted screw thread T shapes drilling tool constantly drilling and extruding and expanding drilling tool pressing body make
Under, the soil body of a side periphery is made to obtain filling close, and the screw thread on the outside of pile body can greatly improve foundation bearing capacity, can also be formed
The disposable pile of T pile bodies can effectively solve the problems, such as the puncture that stake top end forms mattress layer, can improve the carrying of pile foundation
Power.
Environmental benefit：Since compacted screw thread T shapes stake is mainly by the compacted of stake holes, the soil body of stake holes is by compacted all to stake
(side), green, environmental protection construction, eliminates the mud contamination hang-up in previous pile foundation construction, meets the environmental protection political affairs of country
Plan.
Labor-saving high-efficiency reduces cost：Due to the T-shaped structure of the pile body of disposable pile, reduce pile crown excavate, cut stake,
The cumbersome process such as formwork supporting plate improve the work efficiency of engineering, reduce construction cost.
It has wide range of applications：Have particularly with complex ground treatment field for the extensive market demand.
Claims (5)
1. a kind of T shape drilling tools of T shapes cast pile driving construction, including drilling rod（1）And drill bit, drilling rod（1）The perfusion that centre leads in having
Pore, it is characterised in that：Drill bit includes augers mechanism and extruding and expanding drilling tool mechanism, and augers mechanism is sleeved on drilling rod（1）On,
Drilling rod（1）End connection extruding and expanding drilling tool mechanism；Wherein augers mechanism includes the first augers（2）, internal key（3）, spiral
Blade（4）, positioning joint（6）And limit switch（5）；Extruding and expanding drilling tool mechanism includes extruding and expanding drilling tool ontology（8）, lifting telescopic
（9）, expansion joint（10）, screw thread cutter head（11）, wedge slide（12）, axis pin（13）, torsion pass connecting plate（14）, the second augers
（15）, squeezed gauge paste block（19）It spuds in head the bottom of with（16）；First augers（2）The pipe led in, it is intermediate empty
Center portion, which sets up separately, puts drilling rod（1）, the first augers（2）Outside setting helical blade（4）, helical blade（4）It is welded on the first spiral shell
Rotary drill（2）On；First augers（2）Interior welds are provided with internal key（3）, the limiting that top is provided with no less than 2 opens
It closes（5）, in drilling rod（1）First half sets positioning joint（6）；The extruding and expanding drilling tool ontology（8）It is arranged on positioning joint（6）Under
Side, extruding and expanding drilling tool ontology（8）Lead in being, extruding and expanding drilling tool ontology（8）Top and drilling rod（1）By lifting telescopic（9）, it is flexible
Connector（10）Axial stretching keyed is socketed, extruding and expanding drilling tool ontology（8）Lower part and torsion pass connecting plate（14）It is bolted to connection；Institute
The extruding and expanding drilling tool mechanism stated includes at least and squeezes spiral shell device at one, squeezes spiral shell device and is arranged on extruding and expanding drilling tool ontology（8）On, squeeze spiral shell device
Including squeezed gauge paste block（19）, screw thread cutter head（11）, wedge slide（12）, axis pin（13）, screw thread cutter head（11）Pass through axis pin
（13）It is fixed on extruding and expanding drilling tool ontology（8）On, wedge slide（12）It is arranged on screw thread cutter head（11）Inside, squeezed gauge paste block
（19）It is arranged on the extexine of extruding and expanding drilling tool ontology；Wedge slide（12）It is arranged on lifting telescopic（9）On.
2. the T shape drilling tools of T shapes cast pile driving construction according to claim 1, it is characterised in that：The extruding and expanding drilling tool sheet
Body（8）Further include external key（7）, drilling rod（1）Internal key during lower brill（3）With external key（7）In bond styles.
3. the T shape drilling tools of T shapes cast pile driving construction according to claim 1, it is characterised in that：The lifting telescopic
（9）And expansion joint（10）Connection is axially movable using polygon key either spline mode, lifts telescopic（9）With drilling rod
（1）It is fixedly connected, expansion joint（10）Lower end and torsion pass connecting plate（14）It is fixedly connected.
4. the T shape drilling tools of T shapes cast pile driving construction according to claim 1, it is characterised in that：The expansion joint
（10）Tail portion passes through wedge slide（12）, axis pin（13）, torsion pass connecting plate（14）With extruding and expanding drilling tool ontology（8）Connection.
5. the T shape drilling tools of T shapes cast pile driving construction according to claim 1, it is characterised in that：The extruding and expanding drilling tool machine
Structure includes heat-insulated short tube（18）, heat-insulated short tube（18）It is arranged on the second augers（15）With torsion pass connecting plate（14）Between.
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| CN201610736147.6A CN106192996B (en) | 2016-08-26 | 2016-08-26 | A kind of T shape drilling tools of construction method and T shapes the cast pile driving construction of T shapes stake |
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|---|---|---|---|
| CN201610736147.6A CN106192996B (en) | 2016-08-26 | 2016-08-26 | A kind of T shape drilling tools of construction method and T shapes the cast pile driving construction of T shapes stake |
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| CN106192996B true CN106192996B (en) | 2018-06-26 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761415B (en) * | 2017-01-23 | 2019-04-26 | 中电建建筑集团有限公司 | A kind of constructing device and its construction method of profound cast-in-situ bored pile |
| CN108086910A (en) * | 2018-01-18 | 2018-05-29 | 北京地矿工程建设有限责任公司 | Long spire extruded and extended pile drilling machine boring method and long spire extruded and extended pile drilling machine |
| CN108797578A (en) * | 2018-07-12 | 2018-11-13 | 上海市城市建设设计研究总院（集团）有限公司 | Crushed stone grouting pile and its construction method with classification enlarged footing |
| CN108755729B (en) * | 2018-08-20 | 2023-07-04 | 中铁二十局集团第一工程有限公司 | CFG pile foundation pile cap and pile body integrated construction device and method |
| CN115198770B (en) * | 2022-07-25 | 2024-05-28 | 浙江易通特种基础工程股份有限公司 | Positioning pile casing device and static drilling root pile planting construction method using same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2437468A1 (en) * | 1978-09-27 | 1980-04-25 | Labrue Jean Marie | HOLLOW AUGER FOR DRILLING FOR MOLDING CONCRETE PILES |
| CN1216212C (en) * | 2003-11-07 | 2005-08-24 | 东南大学 | Pile forming technology for nail-shaped pile |
| CN102162248B (en) * | 2011-04-26 | 2012-08-29 | 武汉高铁桩工科技有限公司 | Method for forming variable-cross-section compaction thread pile and compaction drilling tool |
| CN204571847U (en) * | 2014-12-31 | 2015-08-19 | 武汉高铁桩工科技有限公司 | The squeezed screw thread drilling tool of a kind of reducing |
| CN104762962B (en) * | 2015-04-08 | 2016-09-14 | 武汉谦诚桩工科技股份有限公司 | A kind of variable cross-section squeezed Screw Pile drilling tool |
| CN105888576A (en) * | 2016-06-12 | 2016-08-24 | 江苏昌鑫基础工程有限公司 | Drilling assembly for integrated construction of long spiral bored perfusion pile top and cap |
| CN206015668U (en) * | 2016-08-26 | 2017-03-15 | 武汉谦诚桩工科技股份有限公司 | A kind of T-shaped pours into a mould the T-shaped drilling tool of pile driving construction |
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Denomination of invention: A construction method of T-shaped pile and T-shaped drilling tool for T-shaped cast-in-place pile construction Effective date of registration: 20210302 Granted publication date: 20180626 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN QIANCHENG PILE WORK TECHNOLOGY Co.,Ltd. Registration number: Y2021420000008 |
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Denomination of invention: A construction method of T-shaped pile and T-shaped drilling tool for T-shaped cast-in-place pile construction Effective date of registration: 20220125 Granted publication date: 20180626 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN QIANCHENG PILE WORK TECHNOLOGY CO.,LTD. Registration number: Y2022420000033 |
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Denomination of invention: A construction method of T-shaped pile and T-shaped drilling tool for T-shaped cast pile construction Effective date of registration: 20230206 Granted publication date: 20180626 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN QIANCHENG PILE WORK TECHNOLOGY CO.,LTD. Registration number: Y2023420000019 |
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