CN108221965A - The branched disk filling pile construction method of concrete back-pressure rotation type - Google Patents
The branched disk filling pile construction method of concrete back-pressure rotation type Download PDFInfo
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- CN108221965A CN108221965A CN201810049586.9A CN201810049586A CN108221965A CN 108221965 A CN108221965 A CN 108221965A CN 201810049586 A CN201810049586 A CN 201810049586A CN 108221965 A CN108221965 A CN 108221965A
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- concrete
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- stake
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
There is provided a kind of concrete back-pressure rotation type branched disk filling pile construction method, using back-pressure rotation type method for filling, during filling concrete, pass through the pressure-adjustable churning mechanism being installed on drilling tool, the cutting of multiple stake holes expanding reach is completed simultaneously, more plate-resistant pouring piles are formed after the completion of filling concrete, sediment in stake holes need not be cleared up, with the completion of filling concrete, the sediment that when cutting generates will automatically exit from stake holes, and working procedure is simple, branched disk pouring pile bearing capacity is strong, it is time saving and energy saving, there is higher use value, it is easy to utilize.
Description
Technical field
The invention belongs to building foundation technical fields, and in particular to a kind of more plate-resistant pouring piles of concrete back-pressure rotation type are applied
Engineering method.
Background technology
With the continuous development of building trade, modern high-rise building needs reliable basis, and in foundation construction, have more
Kind construction technology, wherein for the deposited reinforced concrete pile of Auger drilling, the single pile bearing for improving cast-in-place concrete pile is (anti-
Pull out) ability, particularly important, Patent No. 2013102514683, a kind of entitled disc type cast-in-place concrete pile and its construction work
In the patent document of skill, cylindrical hole bottom, and the stake holes wall more than stake holes axial direction are cut in stake holes bottom using giant
The upper multiple discoid slots of cutting, then discharge the ponding in stake holes and dirt, place concrete perfusion after steel reinforcement cage later,
Disc type cast-in-place concrete pile is formed, by being engaged for disk concrete and foundation soil, improves the bearing capacity of cast-in-place concrete pile,
And such construction method, after normal piling forms stake holes, pile driving equipment is needed to exit stake holes, is stretched into stake holes and protected using steel pillar
Wall, then when carrying out cylindrical hole bottom and multiple discoid slot cuttings successively, cutting action is complicated, and after the completion of cutting, need by
Steel pile casting is handled the ponding in stake holes and dirt after extracting, time-consuming and laborious, after the completion of cleaning, installs steel reinforcement cage,
During this, steel reinforcement cage is installed more demanding, and installation difficulty is big, as long as steel reinforcement cage is slightly contacted and touched with stake holes hole wall
It hits, it will the soil layer part of stake holes inner wall is made to fall into stake holes bottom, stake holes bottom generates surface dust, influences the quality of bored concrete pile, into
And the bearing capacity of bored concrete pile is influenced, in summary, it is necessary to be improved.
Invention content
Present invention solves the technical problem that：It provides a kind of concrete back-pressure rotation type branched disk filling pile construction method, uses
Back-pressure rotation type method for filling during filling concrete, by the pressure-adjustable churning mechanism being installed on drilling tool, is completed
Filling concrete after the cutting and cutting of multiple stake holes expanding reach, is cleared up, working procedure without to the sediment in stake holes
Simply, the construction cost for reducing concrete-pile is low, and the bearing capacity of more plate-resistant pouring piles is strong, has higher use value, just
In popularization and application.
The technical solution adopted by the present invention：The branched disk filling pile construction method of concrete back-pressure rotation type, includes the following steps：
1) according to the strata condition of geological prospecting, projected depth is the stake holes of h on load stratum, and along stake holes bottom hole axis
To up designing one or more branchs successively；
2) it selects suitable Auger drilling stake machine, the rotary jetting apparatus of pressure-adjustable is added on the drilling tool on Auger drilling stake machine
Structure；
3) Auger drilling stake machine is in place, is normally crept into stake holes depth on the load stratum chosen using Auger drilling stake machine
It spends to stop drilling after h；
4) drilling tool, which carries, bores h0After height, concrete is injected into drilling, the concrete liquid level poured into is away from drilling tool bottom end height
For h1Enter section of spinning afterwards, adjust the rotation for section drilling tool that spins and promote speed, the note of concrete when being cut so as to adjust churning
Enter amount；
5) drilling tool continues to carry brill, and during brill concrete perfusion is carried, the churning mechanism on drilling tool is located at mixed mud liquid
Face height is h2Place, and churning mechanism starts the churning on drill hole inner wall using high pressure slurries and cuts first stake other places
Layer, and the height of first cuts formation is made to reach h4And cut relative to the maximum depth of cut of drill hole inner wall to stop after t,
Formed first stake holes expanding reach, at this point, the sediment generated when churning mechanism is using high pressure slurries cutting drilling inner wall fall within it is mixed
On solidifying soil liquid level；When requiring multiple branchs, continue above to carry with drilling tool, drilling tool continues after suitable stake holes depth location
Churning is cut, and forms second stake holes expanding reach, and first stake holes expanding reach forms first branch after brill concrete perfusion is carried
Disk, and so on, form multiple stake holes expanding reach, and multiple stake holes expanding reach form multiple branchs after penetration concrete successively,
Ground is exited until drilling tool carries brill, at this point, it is complete to cut the sediment fallen on concrete liquid level that multiple stake holes expanding reach generate
Exit drilling；
6) drilling tool carries brill and exits ground and after concrete fills stake holes, implanted reinforced bar cage in the concrete into stake holes, shape
Into more plate-resistant pouring piles.
Above-mentioned step 2) in, high-pressure injection pump and mating pulping device are further included on the Auger drilling stake machine.
Above-mentioned steps 4) in, the drilling tool, which carries, bores h0Height is until the brill door machine structure of drilling tool end is opened, the coagulation
Height of the native liquid level away from drilling tool bottom end is 1.8m ＜ h1＜ 2.2m, the rotary speed of section drilling tool that spins is 4-6rpm and drilling tool
Promotion speed be 150-200mm/min.
Above-mentioned steps 5) in, the height that the churning mechanism is located at mixed mud ullage is 2.8m≤h2≤3.2m。
Above-mentioned steps 5) in, the height of the stake holes expanding reach is design height h4And stake holes expanding reach is relative in drilling
The maximum depth of cut t of wall is 300mm.
Above-mentioned steps 5) in, the slurries are water or cement mortar, and the cement mortar is water and cement with mass ratio 1.1：1
It matches, most short mixing time 25min, cleans blender with clean water before proportioning every time, cement grade is more than 32.5
Portland cement, the cement are sieved through at slurrying scene by sieve, and sieve screen apertures are 50 microns.
Above-mentioned steps 5) in, the pressure of high pressure slurries during churning mechanism churning cutting is 12-18MPa, and churning
Nozzle in mechanism is with the nozzle for increasing slurry flow rate and diversion function.
Above-mentioned steps 5) in, the churning mechanism stops the rotation of drilling tool after cutting and promotion speed is restored to normal perfusion
Rotation and promotion speed during stake.
The present invention compared with prior art the advantages of：
1st, the technical program uses back-pressure rotation type method for filling, during filling concrete, is bored by being installed in
Pressure-adjustable churning mechanism on tool, while the cutting of multiple stake holes expanding reach is completed, enormously simplify work progress；
2nd, the technical program forms more plate-resistant pouring piles after the completion of filling concrete, with the completion of filling concrete,
The sediment generated during cutting will automatically exit from stake holes, be cleared up without to the sediment in stake holes；
3rd, the technical program working procedure is simple, and branched disk pouring pile bearing capacity is strong, time saving and energy saving, has higher use
Value, it is easy to utilize.
Description of the drawings
Fig. 1 is piling structure schematic diagram normal in the present invention；
Fig. 2 is that carrying before churning of the present invention is cut bores reperfusion structure schematic diagram；
Fig. 3 cuts the structure diagram to form stake holes expanding reach for slurries churning in the present invention；
Fig. 4 is the structure diagram that stake holes expanding reach concrete perfusion forms a branch in the present invention；
The filling pile structure schematic diagram that Fig. 5 is branch of the present invention when being one；
Fig. 6 is the structure diagram that stake holes expanding reach concrete perfusion of the present invention forms multiple branchs；
The filling pile structure schematic diagram that Fig. 7 is branch of the present invention when being multiple.
Specific embodiment
A kind of embodiment of the 1-7 descriptions present invention below in conjunction with the accompanying drawings.
The branched disk filling pile construction method of concrete back-pressure rotation type, includes the following steps：
1) according to the strata condition of geological prospecting, projected depth is the stake holes 2 of h on load stratum, and along 2 bottom hole of stake holes
It is axial up to design one or more branchs 3 successively；
2) it selects suitable Auger drilling stake machine, the rotary jetting apparatus of pressure-adjustable is added on the drilling tool 1 on Auger drilling stake machine
Structure, specifically, further including high-pressure injection pump and mating pulping device on the Auger drilling stake machine.
3) Auger drilling stake machine is in place, is normally crept into stake holes 2 on the load stratum chosen using Auger drilling stake machine
Depth stops drilling after being h；
4) drilling tool 1, which carries, bores h0After height, concrete 4 is injected into drilling 2,4 liquid level of concrete poured into is away from 1 bottom end of drilling tool
Highly it is h1Enter section of spinning afterwards, adjust the rotation for section drilling tool 1 that spins and promote speed, concrete when being cut so as to adjust churning
4 injection rate, specifically, the drilling tool 1, which carries, bores h0Height is until the brill door machine structure of 1 end of drilling tool is opened, the concrete 4
Height of the liquid level away from 1 bottom end of drilling tool is 1.8m ＜ h1＜ 2.2m, the rotary speed of section drilling tool 1 that spins is 4-6rpm and drilling tool
1 promotion speed is 150-200mm/min.
5) drilling tool 1 continues to carry brill, and during brill concrete perfusion is carried, the churning mechanism on drilling tool 1 is located at mixed mud 4
Ullage height is h2Place, and churning mechanism starts to cut outside first stake in the churning on 2 inner walls that drills using high pressure slurries
Stratum, and the height of first cuts formation is made to reach h4And relative to 2 inner walls of drilling maximum depth of cut to stop cutting after t
It cuts, first stake holes expanding reach 5 is formed, at this point, the sediment generated when churning mechanism is using high pressure slurries 2 inner wall of cutting drilling is fallen
In on 4 liquid level of concrete；When requiring multiple branchs 3, continue above to carry with drilling tool 1, drilling tool 1 is in suitable 2 depth of stake holes
Continue churning cutting behind position, form second stake holes expanding reach 5, first stake holes expanding reach 5 is after brill concrete perfusion 4 is carried
First branch 3 is formed, and so on, form multiple stake holes expanding reach 5, and multiple stake holes expanding reach 5 penetration concrete 4 successively
After form multiple branchs 3, ground is exited until drilling tool 1 carries brill, at this point, that cuts that multiple stake holes expanding reach 5 generate falls within coagulation
Sediment on native 4 liquid levels exits drilling 2 completely, specifically, the height that the churning mechanism is located at 4 ullage of mixed mud is
2.8m≤h2≤ 3.2m, specifically, the height of the stake holes expanding reach 5 is design height h4And stake holes expanding reach 5 is relative to drilling
The maximum depth of cut t of 2 inner walls is 300mm, specifically, the slurries are water or cement mortar, the cement mortar is water and cement
With mass ratio 1.1：1 matches, most short mixing time 25min, cleans blender, cement mark with clean water before proportioning every time
Number portland cement for being more than 32.5, the cement is sieved through at slurrying scene by sieve, and sieve screen apertures are 50 microns, specifically
, the pressure of high pressure slurries during churning mechanism churning cutting is 12-18MPa, and the nozzle in churning mechanism be with
Increase the nozzle of slurry flow rate and diversion function；Specifically, the churning mechanism stops the rotation of drilling tool 1 and promotion speed after cutting
Degree restores to rotation during normal perfusion stake and promotes speed.
6) drilling tool 1 carries brill and exits ground and after concrete 4 fills stake holes 2, and reinforcing bar is implanted into the concrete 4 into stake holes 2
Cage forms more plate-resistant pouring piles 6.
The technical program back-pressure rotation type method for filling, during concrete 4 is perfused, by being installed in drilling tool 1
On pressure-adjustable churning mechanism, while complete the cutting of multiple stake holes expanding reach 5, branched disk formed after the completion of the perfusion of concrete 5
Bored concrete pile is cleared up without to the sediment in stake holes 2, with the completion that concrete 4 is perfused, the sediment that when cutting generates incite somebody to action from
Dynamic to exit stake holes 2, working procedure is simple, and branched disk pouring pile bearing capacity is strong, time saving and energy saving, has higher use value, just
In popularization and application
Above-described embodiment, only presently preferred embodiments of the present invention, is not used for limiting the scope of the present invention, therefore all with this
The equivalence changes that content described in invention claim is done should all be included within scope of the invention as claimed.
Claims (8)
1. the branched disk filling pile construction method of concrete back-pressure rotation type, it is characterised in that include the following steps：
1) according to the strata condition of geological prospecting, projected depth is the stake holes (2) of h on load stratum, and along stake holes (2) bottom hole
It is axial up to design one or more branchs (3) successively；
2) it selects suitable Auger drilling stake machine, the churning mechanism of pressure-adjustable is added on the drilling tool (1) on Auger drilling stake machine；
3) Auger drilling stake machine is in place, is normally crept into stake holes (2) deeply on the load stratum chosen using Auger drilling stake machine
It spends to stop drilling after h；
4) drilling tool (1), which carries, bores h0After height, the injection concrete (4) into drilling (2), the concrete poured into (4) liquid level is away from drilling tool
(1) bottom end height is h1Enter section of spinning afterwards, adjust the rotation for section drilling tool (1) that spins and promote speed, cut so as to adjust churning
The injection rate of concrete (4) when cutting；
5) drilling tool (1) continues to carry brill, and during brill concrete perfusion is carried, the churning mechanism on drilling tool (1) is located at mixed mud
(4) ullage height is h2Place, and churning mechanism starts the churning on drilling (2) inner wall using high pressure slurries and cuts first
The outer stratum of stake, and the height of first cuts formation is made to reach h4And relative to drilling (2) inner wall maximum depth of cut for after t
Stop cutting, form first stake holes expanding reach (5), at this point, churning mechanism produces when utilizing high pressure slurries cutting drilling (2) inner wall
Raw sediment is fallen on concrete (4) liquid level；When requiring multiple branchs (3), continue above to carry with drilling tool (1), drilling tool (1)
Continue churning cutting after suitable stake holes (2) depth location, form second stake holes expanding reach (5), first stake holes expands
Section (5) is carrying brill concrete perfusion (4) first branch (3) of formation afterwards, and so on, multiple stake holes expanding reach (5) are formed, and
Penetration concrete (4) forms multiple branchs (3) to multiple stake holes expanding reach (5) afterwards successively, and ground is exited until drilling tool (1) carries brill,
At this point, cut the sediment fallen on concrete (4) liquid level that multiple stake holes expanding reach (5) generate exits drilling (2) completely；
6) drilling tool (1) carries brill and exits ground and after concrete (4) fills stake holes (2), is planted in the concrete (4) into stake holes (2)
Enter steel reinforcement cage, form more plate-resistant pouring piles (6).
2. the branched disk filling pile construction method of concrete back-pressure rotation type according to claim 1, it is characterised in that：Above-mentioned step
2) in, high-pressure injection pump and mating pulping device are further included on the Auger drilling stake machine.
3. the branched disk filling pile construction method of concrete back-pressure rotation type according to claim 1, it is characterised in that：Above-mentioned step
It is rapid 4) in, the drilling tool (1) carry bore h0Height is until the brill door machine structure of drilling tool (1) end is opened, concrete (4) liquid level
Height away from drilling tool (1) bottom end is 1.8m ＜ h1＜ 2.2m, the rotary speed of section drilling tool (1) that spins is 4-6rpm and drilling tool
(1) promotion speed is 150-200mm/min.
4. the branched disk filling pile construction method of concrete back-pressure rotation type according to claim 1, it is characterised in that：Above-mentioned step
It is rapid 5) in, the churning mechanism be located at mixed mud (4) ullage height be 2.8m≤h2≤3.2m。
5. the branched disk filling pile construction method of concrete back-pressure rotation type according to claim 1, it is characterised in that：Above-mentioned step
It is rapid 5) in, the height of the stake holes expanding reach (5) is design height h4And stake holes expanding reach (5) is relative to drilling (2) inner wall
Maximum depth of cut t is 300mm.
6. the branched disk filling pile construction method of concrete back-pressure rotation type according to claim 1, it is characterised in that：Above-mentioned step
It is rapid 5) in, the slurries are water or cement mortar, and the cement mortar is water and cement with mass ratio 1.1：1 match, it is most short
Mixing time 25min clean blender before proportioning with clean water every time, and cement grade is more than 32.5 portland cement, institute
It states cement to be sieved through by sieve at slurrying scene, sieve screen apertures are 50 microns.
7. the branched disk filling pile construction method of concrete back-pressure rotation type according to claim 1, it is characterised in that：Above-mentioned step
It is rapid 5) in, the pressure of high pressure slurries during churning mechanism churning cutting is 12-18MPa, and the nozzle in churning mechanism is
With the nozzle for increasing slurry flow rate and diversion function.
8. the branched disk filling pile construction method of concrete back-pressure rotation type according to claim 1, it is characterised in that：Above-mentioned step
It is rapid 5) in, the churning mechanism stops after cutting the rotation of drilling tool (1) and promotes speed restoring to rotation during normal perfusion stake
With promotion speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810049586.9A CN108221965B (en) | 2018-01-18 | 2018-01-18 | The more plate-resistant pouring pile construction methods of concrete back-pressure rotation type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810049586.9A CN108221965B (en) | 2018-01-18 | 2018-01-18 | The more plate-resistant pouring pile construction methods of concrete back-pressure rotation type |
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| CN108221965A true CN108221965A (en) | 2018-06-29 |
| CN108221965B CN108221965B (en) | 2019-08-09 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844588A (en) * | 2006-03-15 | 2006-10-11 | 中国矿业大学 | Section bar inserting and high-pressure rotary jetting method for forming pile with expanded plates in sink area |
| DE102010027607A1 (en) * | 2010-07-20 | 2012-01-26 | Bauer Spezialtiefbau Gmbh | In-situ manufactured floor mortar slats with geometric representation |
| CN103452100A (en) * | 2013-08-20 | 2013-12-18 | 河北建设勘察研究院有限公司 | Construction method of post-grouting squeezing and expanding combination cast-in-place bored pile |
| CN103835284A (en) * | 2014-02-21 | 2014-06-04 | 安徽省公路桥梁工程有限公司 | Karst area drilling cast-in-place pile structure and construction method |
-
2018
- 2018-01-18 CN CN201810049586.9A patent/CN108221965B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844588A (en) * | 2006-03-15 | 2006-10-11 | 中国矿业大学 | Section bar inserting and high-pressure rotary jetting method for forming pile with expanded plates in sink area |
| DE102010027607A1 (en) * | 2010-07-20 | 2012-01-26 | Bauer Spezialtiefbau Gmbh | In-situ manufactured floor mortar slats with geometric representation |
| CN103452100A (en) * | 2013-08-20 | 2013-12-18 | 河北建设勘察研究院有限公司 | Construction method of post-grouting squeezing and expanding combination cast-in-place bored pile |
| CN103835284A (en) * | 2014-02-21 | 2014-06-04 | 安徽省公路桥梁工程有限公司 | Karst area drilling cast-in-place pile structure and construction method |
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| CN108221965B (en) | 2019-08-09 |
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