CN109853533A - The construction method of static-pressure expanding bottom pile - Google Patents
The construction method of static-pressure expanding bottom pile Download PDFInfo
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- CN109853533A CN109853533A CN201910275041.4A CN201910275041A CN109853533A CN 109853533 A CN109853533 A CN 109853533A CN 201910275041 A CN201910275041 A CN 201910275041A CN 109853533 A CN109853533 A CN 109853533A
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Abstract
The invention discloses a kind of construction method of static-pressure expanding bottom pile, including equipment immersed tube system it is in place, immersed tube, base expanding and base expanding, pour, tube drawing step, base expanding and base expanding include embrace a pressure, press, back-pressure, it is interior ram, it is interior ram, the interactive base-enlarging method such as interior rammer double-click.The present invention improves and enriches existing base-enlarging method, dry and wet.Construction quality of the present invention is good, easy for construction, construction efficiency is high, effect is good.
Description
Technical field
The present invention relates to a kind of construction methods of static-pressure expanding bottom pile.
Background technique
Existing static-pressure expanding bottom pile technique mainly embraces pressure, press base expanding and base expanding technique, and the filler material energy squeezed out in outer tube has
Limit, often card is managed.
Existing static pressure, immersed tube base expanding and base expanding pile construction method mainly has following several:
1) diesel hammer hammers inside and outside double-jacket tube ram-expanded pile (abbreviation rammed bulb pile)；
2) electrically operated hammer hammers inside and outside double-jacket tube ram-expanded pile (referred to as complete to ram stake, ZL99101432.4), although eliminating
The common fault of conventional method, but also have shortcomings: pile is difficult when meeting intermediate hard interbedded layer or artesian water；Have in work progress certain
Noise and vibration, have soil compaction effect to surrounding building and underground utilities, applying man-hour requirement using oise-reducing means and setting up defences
Shake the corresponding measures such as ditch.
3) hammering (rams pore-forming by column hammer with pipe；Casing is sunk to designed elevation by back-pressure casing) complex carrier rammer expansion
Stake, is the stake being made of carrier and concrete pile body, its pile sinking difficulty in decannulation of early stage.
4) internal-tamping immersed tube bored concrete tamping-extending pile (ZL200610039707.9), using drop hammer certainly, vibration hammer, double hammer single tubes fill
It sets, interior rammer interaction immersed tube technique, interior hammer ram rams the Concrete Filled material in outer tube repeatedly and forms enlarged footing.Work progress is to week
Side building and underground piping have certain soil compaction effect；When level of ground water is higher, especially there is artesian area, pile has one
Fixed difficulty.
5) double-jacket tube ram-expanded pile (abbreviation static-pressure expanding bottom pile ZL200620040782.2) inside and outside roof pressing type, roof pressing type is quiet
Tube head by inside and outside double-jacket tube while after being pressed into projected depth in forcing stake and pressing, proposes inner tube, by filler material and does in batches
In rigid concrete or low slump concrete investment outer tube, then by filler material and dry concrete or low collapsed in batches with inner tube
Degree of falling concrete is compacted repeatedly, is formed at stake end and is met enlarged footing.The disadvantage is that: stake body product is big, and structure is complicated, cost compared with
It is high；Since the self weight of stake machine is larger, counterweight is also needed, occurs to fall into machine and squeeze flat adjacent stake in softer ground construction；Hardening should be taken
Ground measure.
6) non-borrow composite underreamed pile (referred to as compound club-footed pile ZL201010130246.2), plays immersed tube expansion in soil cement
Bottom stake, has many advantages, such as relative to traditional technology；
7) hugging pressure type inner and outer pipes ram-expanded pile (the compound club-footed pile ZL201510331164.7 of abbreviation static pressure), although having very big excellent
Point, but stake body product is big, and self weight counterweight is larger, and card Guan Wenti, process, quality controllable etc. are needed there is also shortcoming into one
Step is improved.
Summary of the invention
A kind of construction method of the purpose of the present invention is to provide construction qualities static-pressure expanding bottom pile good, easy for construction.
The technical solution of the invention is as follows:
A kind of construction method of static-pressure expanding bottom pile, including equipment immersed tube system it is in place, immersed tube, base expanding and base expanding, pour, tube drawing step,
Be characterized in: the immersed tube system includes outer tube, and setting inner tamping tube is hammered into shape in outer tube；The inner tamping tube hammer includes the lower part that diameter is D3
Interior hammer ram, the top inner tamping tube that diameter is D2, interior hammer ram link into an integrated entity with inner tamping tube, and it is D1's that diameter is equipped at the top of inner tamping tube
On ram disk, it is to ram disk under D4 that interior hammer ram lower part, which is equipped with diameter,；D1 >=D2, D2≤D3；
Interior hammer ram top is equipped with the hook of connecting steel wire ropes；
The base expanding and base expanding step at least uses one of following method:
(1) hydraulic armful of compressing cylinder in static pressure equipment rack directly embraces inner tamping tube hammer, along guide rail to down toward set depth, squeezes
Filler material in outlet pipe；Filling and above-mentioned extrusion step is repeated, forms enlarged footing；
(2) in hydraulic armful of compressing cylinder of two sets be arranged in static pressure equipment rack, upper a set of hydraulic armful of compressing cylinder directly embraces interior rammer
Pipe hammer, embraces downwards along guide rail and is depressed into set depth, squeezes out the filler material in outer tube；Filling and above-mentioned armful of pressure is repeated, squeezes out,
Form enlarged footing；Under a set of hydraulic armful of compressing cylinder directly embrace outer tube, prevent squeeze enlarged footing process middle external tube with pipe, filling
Material, which squeezes, does not go out to be formed card pipe；
(3) hydraulic top-pressure oil cylinder withstands inner tamping tube tup, is pressed downwards along guide rail to set depth, squeezes out the filling in outer tube
Material；Filling and above-mentioned armful of pressure is repeated, squeezes out, forms enlarged footing；Under a set of hydraulic armful of compressing cylinder directly embrace outer tube, prevent
Extruding enlarged footing process middle external tube squeezes with pipe, filler material and does not go out to be formed card pipe；
(4) it above mentions inner tamping tube to hammer into shape to certain depth, unclamps the wirerope of connection inner tamping tube hammer on hoist engine, inner tamping tube hammer is freely fallen
Body, the interior filler material rammed in outer tube；Filling and above-mentioned interior rammer process is repeated, forms enlarged footing；Under a set of hydraulic armful of pressure oil
Cylinder directly embraces outer tube, prevents interior rammer enlarged footing process middle external tube from squeezing with pipe, filler material and does not go out to be formed card pipe；
(5) inner tamping tube hammer inner cavity is equipped with interior rammer from dropping hammer, and forms mother and sons' hammer；Above mention intracavitary in inner tamping tube hammer dropped hammer certainly to certain
Highly, drop hammer freely falling body certainly, inside rams down and rams disk, be repeated filler and it is above-mentioned in ram process, form enlarged footing；Under
A set of hydraulic armful of compressing cylinder directly embraces outer tube, prevent in ram enlarged footing during, outer tube is squeezed and is not gone out shape with pipe, filler material
Cheng Kaguan；
(6) above mention inner tamping tube hammer in it is intracavitary drop hammer certainly, drive inner tamping tube hammer into shape to certain altitude, hooking slits are hammered into shape by inner tamping tube
It is inserted in pivot pin, the wirerope on hoist engine above mentions inner tamping tube hammer inner cavity and drops hammer certainly, when uplink, makes hook around the inside sidespin of pin shaft
Turn, screw in inner tamping tube, block from the head that drops hammer, drives inner tamping tube hammer uplink together；Conversely, hook rotates outward around pin shaft,
It screws out outside inner tamping tube, does not block from the head that drops hammer, do not drive inner tamping tube hammer uplink together, voluntarily free uplink of dropping hammer certainly, Mu Zichui
Freely falling body, inner tamping tube hammer, drop hammer the filler material double-clicked in outer tube certainly；Filler and above-mentioned interior rammer step is repeated, is formed and is expanded
Major part；Under a set of hydraulic armful of compressing cylinder directly embrace outer tube, prevent in ram enlarged footing during, outer tube with pipe, filler material squeeze
It does not go out to form card pipe.
Disk, inner tamping tube, interior hammer ram is rammed to link into an integrated entity, under ram disk and interior hammer ram in it is partable, up and down can be opposite
Mobile form.
By adjusting compacted coefficient D ∈ (D1、D2、D3、D4…Dn, V) and adjust the compacted degree of the soil body；D1、D2、D3、D4…
DnWhen to ram filler material, in primary, secondary, the n times deflection three times ... of 2100kw.m respective impact energy；V is filler material
Volume.
Size, the shape of enlarged footing are adjusted by adjusting shape factor α ∈ (H, h, C, E, V)；H is the height to feed intake；h
Including hOn、hUnder, degree of lifting and outer tube underthrust depth respectively on outer tube；C is to ram to expand outer distance of the tube bottom away from stake bottom, E when completing
Inner tamping tube hammers distance of the bottom away from outer tube bottom into shape when expanding completion to ram, and V is the volume of filler material.
By adjusting coefficient of bearing caoacity m=Rk/ Y adjusts the compaction of the soil body, the vertical limit of prediction prediction enlarged footing
Bearing capacity, Y are enlarged footing terminal piling pressure.
The material of filler material is adjusted to adjust the number of plies of enlarged footing, monolayer material enlarged footing is formed or multilayer material expands
Head；Filler material is the non-cementing material of unlike material bulk solid, unlike material mixture glue cementing material；It feeds intake, logical material uses: outer
Pipe and inner tamping tube hammer mouth, side wall mouth feed intake, filling are pressed to feed intake.
The present invention improves and enriches existing base-enlarging method, embrace pressure, press, back-pressure, interior rammer, it is interior ram, the double-click of interior rammer
Deng interaction base expanding and base expanding, dry and wet.Construction quality of the present invention is good, easy for construction, construction efficiency is high, effect is good.
Below with reference to embodiment, the invention will be further described.
Specific embodiment
A kind of construction method of static-pressure expanding bottom pile, including equipment immersed tube system it is in place, immersed tube, base expanding and base expanding, pour, tube drawing step
Suddenly, the immersed tube system includes outer tube, and setting inner tamping tube is hammered into shape in outer tube；The inner tamping tube hammer rams in the lower part of D3 including diameter
Hammer, the top inner tamping tube that diameter is D2, interior hammer ram link into an integrated entity with inner tamping tube, and the upper rammer that diameter is D1 is equipped at the top of inner tamping tube
Disk is hit, it is to ram disk under D4 that interior hammer ram lower part, which is equipped with diameter,；D1 >=D2, D2≤D3；
Interior hammer ram top is equipped with the hook of connecting steel wire ropes；
The base expanding and base expanding step at least uses one of following method:
(1) hydraulic armful of compressing cylinder in static pressure equipment rack directly embraces inner tamping tube hammer, along guide rail to down toward set depth, squeezes
Filler material in outlet pipe；Filling and above-mentioned extrusion step is repeated, forms enlarged footing；
(2) in hydraulic armful of compressing cylinder of two sets be arranged in static pressure equipment rack, upper a set of hydraulic armful of compressing cylinder directly embraces interior rammer
Pipe hammer, embraces downwards along guide rail and is depressed into set depth, squeezes out the filler material in outer tube；Filling and above-mentioned armful of pressure is repeated, squeezes out,
Form enlarged footing；Under a set of hydraulic armful of compressing cylinder directly embrace outer tube, prevent squeeze enlarged footing process middle external tube with pipe, filling
Material, which squeezes, does not go out to be formed card pipe；
(3) hydraulic top-pressure oil cylinder withstands inner tamping tube tup, is pressed downwards along guide rail to set depth, squeezes out the filling in outer tube
Material；Filling and above-mentioned armful of pressure is repeated, squeezes out, forms enlarged footing；Under a set of hydraulic armful of compressing cylinder directly embrace outer tube, prevent
Extruding enlarged footing process middle external tube squeezes with pipe, filler material and does not go out to be formed card pipe；
(4) it above mentions inner tamping tube to hammer into shape to certain depth, unclamps the wirerope of connection inner tamping tube hammer on hoist engine, inner tamping tube hammer is freely fallen
Body, the interior filler material rammed in outer tube；Filling and above-mentioned interior rammer process is repeated, forms enlarged footing；Under a set of hydraulic armful of pressure oil
Cylinder directly embraces outer tube, prevents interior rammer enlarged footing process middle external tube from squeezing with pipe, filler material and does not go out to be formed card pipe；
(5) inner tamping tube hammer inner cavity is equipped with interior rammer from dropping hammer, and forms mother and sons' hammer；Above mention intracavitary in inner tamping tube hammer dropped hammer certainly to certain
Highly, drop hammer freely falling body certainly, inside rams down and rams disk, be repeated filler and it is above-mentioned in ram process, form enlarged footing；Under
A set of hydraulic armful of compressing cylinder directly embraces outer tube, prevent in ram enlarged footing during, outer tube is squeezed and is not gone out shape with pipe, filler material
Cheng Kaguan；
(6) above mention inner tamping tube hammer in it is intracavitary drop hammer certainly, drive inner tamping tube hammer into shape to certain altitude, hooking slits are hammered into shape by inner tamping tube
It is inserted in pivot pin, the wirerope on hoist engine above mentions inner tamping tube hammer inner cavity and drops hammer certainly, when uplink, makes hook around the inside sidespin of pin shaft
Turn, screw in inner tamping tube, block from the head that drops hammer, drives inner tamping tube hammer uplink together；Conversely, hook rotates outward around pin shaft,
It screws out outside inner tamping tube, does not block from the head that drops hammer, do not drive inner tamping tube hammer uplink together, voluntarily free uplink of dropping hammer certainly, Mu Zichui
Freely falling body, inner tamping tube hammer, drop hammer the filler material double-clicked in outer tube certainly；Filler and above-mentioned interior rammer step is repeated, is formed and is expanded
Major part；Under a set of hydraulic armful of compressing cylinder directly embrace outer tube, prevent in ram enlarged footing during, outer tube with pipe, filler material squeeze
It does not go out to form card pipe.
Disk, inner tamping tube, interior hammer ram is rammed to link into an integrated entity, under ram disk and interior hammer ram in it is partable, up and down can be opposite
Mobile form.
By adjusting compacted coefficient D ∈ (D1、D2、D3、D4…Dn, V) and adjust the compacted degree of the soil body；D1、D2、D3、D4…
DnWhen to ram filler material, in primary, secondary, the n times deflection three times ... of 2100kw.m respective impact energy；V is filler material
Volume.
Size, the shape of enlarged footing are adjusted by adjusting shape factor α ∈ (H, h, C, E, V)；H is the height to feed intake；h
Including hOn、hUnder, degree of lifting and outer tube underthrust depth respectively on outer tube；C is to ram to expand outer distance of the tube bottom away from stake bottom, E when completing
Inner tamping tube hammers distance of the bottom away from outer tube bottom into shape when expanding completion to ram, and V is the volume of filler material.
By adjusting coefficient of bearing caoacity m=Rk/ Y adjusts the compaction of the soil body, the vertical limit of prediction prediction enlarged footing
Bearing capacity, Y are enlarged footing terminal piling pressure.
The material of filler material is adjusted to adjust the number of plies of enlarged footing, monolayer material enlarged footing is formed or multilayer material expands
Head；Filler material is the non-cementing material of unlike material bulk solid, unlike material mixture glue cementing material；It feeds intake, logical material uses: outer
Pipe and inner tamping tube hammer mouth, side wall mouth feed intake, filling are pressed to feed intake.
Claims (6)
1. a kind of construction method of static-pressure expanding bottom pile, including equipment immersed tube system it is in place, immersed tube, base expanding and base expanding, pour, tube drawing step,
It is characterized in that: the immersed tube system includes outer tube, setting inner tamping tube is hammered into shape in outer tube；It is under D3 that the inner tamping tube hammer, which includes diameter,
Hammer ram, the top inner tamping tube that diameter is D2, interior hammer ram link into an integrated entity with inner tamping tube in portion, and it is D1 that diameter is equipped at the top of inner tamping tube
On ram disk, it is to ram disk under D4 that interior hammer ram lower part, which is equipped with diameter,；D1 >=D2, D2≤D3；
Interior hammer ram top is equipped with the hook of connecting steel wire ropes；
The base expanding and base expanding step at least uses one of following method:
(1) hydraulic armful of compressing cylinder in static pressure equipment rack directly embraces inner tamping tube hammer, along guide rail to down toward set depth, squeezes
Filler material in outlet pipe；Filling and above-mentioned extrusion step is repeated, forms enlarged footing；
(2) in hydraulic armful of compressing cylinder of two sets be arranged in static pressure equipment rack, upper a set of hydraulic armful of compressing cylinder directly embraces interior rammer
Pipe hammer, embraces downwards along guide rail and is depressed into set depth, squeezes out the filler material in outer tube；Filling and above-mentioned armful of pressure is repeated, squeezes out,
Form enlarged footing；Under a set of hydraulic armful of compressing cylinder directly embrace outer tube, prevent squeeze enlarged footing process middle external tube with pipe, filling
Material, which squeezes, does not go out to be formed card pipe；
(3) hydraulic top-pressure oil cylinder withstands inner tamping tube tup, is pressed downwards along guide rail to set depth, squeezes out the filling in outer tube
Material；Filling and above-mentioned armful of pressure is repeated, squeezes out, forms enlarged footing；Under a set of hydraulic armful of compressing cylinder directly embrace outer tube, prevent
Extruding enlarged footing process middle external tube squeezes with pipe, filler material and does not go out to be formed card pipe；
(4) it above mentions inner tamping tube to hammer into shape to certain depth, unclamps the wirerope of connection inner tamping tube hammer on hoist engine, inner tamping tube hammer is freely fallen
Body, the interior filler material rammed in outer tube；Filling and above-mentioned interior rammer process is repeated, forms enlarged footing；Under a set of hydraulic armful of pressure oil
Cylinder directly embraces outer tube, prevents interior rammer enlarged footing process middle external tube from squeezing with pipe, filler material and does not go out to be formed card pipe；
(5) inner tamping tube hammer inner cavity is equipped with interior rammer from dropping hammer, and forms mother and sons' hammer；Above mention intracavitary in inner tamping tube hammer dropped hammer certainly to certain
Highly, drop hammer freely falling body certainly, inside rams down and rams disk, be repeated filler and it is above-mentioned in ram process, form enlarged footing；Under
A set of hydraulic armful of compressing cylinder directly embraces outer tube, prevent in ram enlarged footing during, outer tube is squeezed and is not gone out shape with pipe, filler material
Cheng Kaguan；
(6) above mention inner tamping tube hammer in it is intracavitary drop hammer certainly, drive inner tamping tube hammer into shape to certain altitude, hooking slits are hammered into shape by inner tamping tube
It is inserted in pivot pin, the wirerope on hoist engine above mentions inner tamping tube hammer inner cavity and drops hammer certainly, when uplink, makes hook around the inside sidespin of pin shaft
Turn, screw in inner tamping tube, block from the head that drops hammer, drives inner tamping tube hammer uplink together；Conversely, hook rotates outward around pin shaft,
It screws out outside inner tamping tube, does not block from the head that drops hammer, do not drive inner tamping tube hammer uplink together, voluntarily free uplink of dropping hammer certainly, Mu Zichui
Freely falling body, inner tamping tube hammer, drop hammer the filler material double-clicked in outer tube certainly；Filler and above-mentioned interior rammer step is repeated, is formed and is expanded
Major part；Under a set of hydraulic armful of compressing cylinder directly embrace outer tube, prevent in ram enlarged footing during, outer tube with pipe, filler material squeeze
It does not go out to form card pipe.
2. the construction method of static-pressure expanding bottom pile according to claim 1 connects it is characterized in that: ramming disk, inner tamping tube, interior hammer ram
Be connected into one, under ram disk and interior hammer ram in partable, upper and lower relatively-movable form.
3. the construction method of static-pressure expanding bottom pile according to claim 1, it is characterized in that: by adjusting compacted coefficient D ∈ (D1、
D2、D3、D4…Dn, V) and adjust the compacted degree of the soil body；D1、D2、D3、D4…DnIt is corresponding in 2100kw.m when to ram filler material
Primary, secondary, the n times deflection three times ... of impact energy；V is the volume of filler material.
4. the construction method of static-pressure expanding bottom pile according to claim 1,2 or 3, it is characterized in that: by adjusting shape factor α
∈ (H, h, C, E, V) adjusts size, the shape of enlarged footing；H is the height to feed intake；H includes hOn、hUnder, respectively pulled out on outer tube
Height and outer tube underthrust depth；C is to ram to expand outer distance of the tube bottom away from stake bottom when completing, E be ram expand inner tamping tube when completing hammer into shape bottom away from
The distance of outer tube bottom, V are the volume of filler material.
5. the construction method of static-pressure expanding bottom pile according to claim 1,2 or 3, it is characterized in that: by adjusting bearing capacity system
Number m=Rk/ Y adjusts the compaction of the soil body, the ultimate vertical bearing capacity of prediction prediction enlarged footing, and Y is that enlarged footing terminates piling
Power.
6. the construction method of static-pressure expanding bottom pile according to claim 1,2 or 3, it is characterized in that: the material of adjustment filler material
To adjust the number of plies of enlarged footing, formation monolayer material enlarged footing or multilayer material enlarged footing；Filler material is unlike material bulk solid
Non- cementing material, unlike material mixture glue cementing material；Feed intake, logical material uses: outer tube and inner tamping tube hammer mouth, side wall mouth are thrown
Material, pressure are filled and are fed intake.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910275041.4A CN109853533A (en) | 2019-04-08 | 2019-04-08 | The construction method of static-pressure expanding bottom pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910275041.4A CN109853533A (en) | 2019-04-08 | 2019-04-08 | The construction method of static-pressure expanding bottom pile |
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| CN109853533A true CN109853533A (en) | 2019-06-07 |
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ID=66903387
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182724A (en) * | 2021-12-24 | 2022-03-15 | 王磊 | Construction method and construction equipment for immersed tube club-footed pile |
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| CN2581509Y (en) * | 2002-04-01 | 2003-10-22 | 曹兴明 | Three-purpose pile driver for drilling, vibration extracting and vibration tamping foundation large head pile |
| JP2010236323A (en) * | 2009-03-31 | 2010-10-21 | Mitani Sekisan Co Ltd | Foundation pile structure for on-site formation, and construction method of foundation pile |
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Application publication date: 20190607 |