CN105178291B - Large pile foundation construction method - Google Patents
Large pile foundation construction method Download PDFInfo
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- CN105178291B CN105178291B CN201510519871.9A CN201510519871A CN105178291B CN 105178291 B CN105178291 B CN 105178291B CN 201510519871 A CN201510519871 A CN 201510519871A CN 105178291 B CN105178291 B CN 105178291B
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Abstract
The invention discloses a large pile foundation construction method. The large pile foundation construction method comprises the following steps that preparation is carried out before drilling; a pile casing is buried and formed by combining multiple first pile casing walls and multiple second pile casing walls alternately in a mutual crossed and overlapped mode so that the inner diameter of the pile casing can be adjusted, the first pile casing walls are of a double-layer structure with an interlayer and are arc, the second pile casing walls are elastic arc boards, the thickness of the second pile casing walls corresponds to the thickness of the interlayers of the first pile casing walls, and the radian of the second pile casing walls is consistent with the radian of the first pile casing walls so that the second pile casing walls can be inserted into the interlayers of the first pile casing walls and the inner diameter of the pile casing can be adjusted; grouting is conducted, i.e., wall protecting slurry is poured into the pile casing; drilling is conducted, i.e., combined drilling is conducted through a percussion drill and a rotary drilling rig; hole cleaning is conducted; and a pile is formed.
Description
Technical field
The present invention relates to construction method field, more particularly, to a kind of large-scale pile base construction method.
Background technology
With the development of civil construction project technology, pile foundation construction is more and more used, and development trend to overlength,
Large-diameter pile foundation develops；At present, pile base construction method has: percussive drill boring, rotary drilling rig boring etc..General in pile foundation construction
All over needing to use casing, casing is a kind of equipment of buildings pile construction, is generally embedded in the aperture of pile foundation, prevents aperture ground
Native the subsiding of table, and forming machinery is play the guiding role.
Each pile foundation engineering generally has the pile-type of multiple diameter, often will configure multiple different sizes according to stake footpath difference
Casing is to meet construction demand.Casing is hollow structure, and bulk density is relatively light, but it is larger integrally to take up room.?
Take the haulage vehicle useful space in transportation, and be easily deformed during transportation loading and unloading, especially in long-distance transportation
During, the cost of transportation of casing is higher, and it is unfavorable that construction is produced.
Content of the invention
It is an object of the invention to solving at least the above and/or defect, and provide at least will be described later excellent
Point.
It is a further object of the invention to provide a kind of large-scale pile base construction method, disclosure satisfy that different in pile foundation construction
The demand of specification casing.
For achieving the above object with some other purposes, the present invention adopts the following technical scheme that
A kind of large-scale pile base construction method, comprises the following steps:
Prepare before step one, boring: smooth location, measuring stake holes position, setting mud pit, mud circulation groove, according to
Upper laying is used for supporting the bore operation stand of rig on construction ground for building pile foundation plan-position and drilling sequences；
Step 2, embedded casing: holed to the depth of burying using rotary drilling rig, rotary drilling rig installs casing driver,
Lifting casing, is directed at hole position, and casing is installed in rotation armed lever decentralization；Wherein, described casing is by multiple first casing walls and multiple
Two casing walls are spaced in the way of the overlap that can intersect and combine, so that the internal diameter of described casing is adjustable；Wherein, described
One casing wall is to have double-decker with dissection, and described first casing wall is set to arc, and described second casing wall is to have bullet
Property arc, and the thickness of described second casing wall is corresponding with the thickness of interlayer of described first casing wall, described second shield
The radian of barrel is consistent with the radian of the first casing wall, so that the second casing wall energy enough interts the interlayer into described first casing wall
In and make casing internal diameter adjusted；
Step 3, grouting: into casing, pour into slurry coat method；
Step 4, boring: boring is combined using percussive drill and rotary drilling rig；According to hole position geological condition, select impact
Rig, the drilling sequences of rotary drilling rig；
Step 5, borehole cleaning: take and change the clear quarrel of slurry and rotary drilling rig double door drill bit or percussive drill is drawn quarrel cylinder and drawn quarrel borehole cleaning
Joint borehole cleaning technique, holes to projected depth, pours into the less mud of density in the hole, changes the clear quarrel of slurry；
Step 6, pile: after borehole cleaning is qualified, take percussive drill or crane lifting decentralization steel reinforcement cage to be installed, using leading
Tube method pouring underwater concrete, pulls out casing.
Preferably, in described large-scale pile base construction method, in step 2, at the both ends open of described first casing wall
It is provided with sealing strip, so that the interlayer inner sealing of the first casing wall.
Preferably, in described large-scale pile base construction method, in step 2, described second casing wall at least side is along institute
The radian direction stating the second casing wall is provided with draw-in groove, is provided with zigzag projection in described draw-in groove；Described first casing wall
It is provided with the locking member matching with described zigzag projection at the both-side opening of interlayer, so that described first casing wall and second
The connecting portion of casing wall is fixed.
Preferably, in described large-scale pile base construction method, described casing also includes adjusting button, described regulation button
It is connected with described locking member, and controls locking member to protrude to be equipped in described zigzag projection, or locking member resets to depart from
State zigzag projection.
Preferably, in described large-scale pile base construction method, the quantity of described first casing wall and the second casing wall is divided
Wei 4.
Preferably, in described large-scale pile base construction method, in step 4, if shape clay is moulded, first for soft in stratum
Using rotary drilling rig boring, after being drilled into pebble layer, use percussive drill pore-forming instead；In percussive drill boring procedure to stake holes in
Throw in clay pulping, compacted hole wall simultaneously；
Supplementing mud in boring procedure into boring and being crept into keeping and carry mud liquid level in brill metapore is higher than casing bottom
More than 1.5m, and in the hole mud liquid level descends more than water level elevation 0.8m above Ground.
Preferably, in described large-scale pile base construction method, in step 5, slurry coat method before pouring underwater concrete
Density domination is in 1.0-1.2kg/cm3, take simultaneously and draw the heavy quarrel in quarrel method cleaning stake bottom.
Preferably, in described large-scale pile base construction method, in step one, described bore operation stand includes bearing frame
Body and coupling assembly, described load-bearing support body by several transversely arranged truss monomer compositions, between adjacent described truss monomer
Removably it is attached by described coupling assembly；This operation platform also includes the use below described load-bearing support body
In the support lower supporting assembly of load-bearing support body and the upper support component for supporting rig above described load-bearing support body；
Described upper support component is hydraulic jack, makes the height adjustable of rig.
The present invention at least includes following beneficial effect: the present invention passes through to be set to the casing commonly using in pile foundation construction
Connected by multiple casing walls in certain radian are mutually interspersed, make casing can be adjusted to the specification with different inner diameters, and can
So that casing is more easily dismounted and transport, and make pile foundation construction convenient.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part also will be by this
Invention research and practice and be understood by the person skilled in the art.
Brief description
Fig. 1 is the cross-sectional structure schematic diagram of casing of the present invention.
Specific embodiment
Below the present invention is elaborated, can be real according to this after this specification to make those of ordinary skill in the art refer to
Apply.
A kind of large-scale pile base construction method, comprises the following steps:
Prepare before step one, boring: smooth location, measuring stake holes position, setting mud pit, mud circulation groove, according to
Upper laying is used for supporting the bore operation stand of rig on construction ground for building pile foundation plan-position and drilling sequences；
Step 2, embedded casing: holed to the depth of burying using rotary drilling rig, rotary drilling rig installs casing driver,
Lifting casing, is directed at hole position, and casing is installed in rotation armed lever decentralization；Wherein, as shown in figure 1, described casing is by multiple first casings
Wall 1 and multiple second casing wall 2 are spaced in the way of the overlap that can intersect and combine, so that the internal diameter of described casing can
Adjust；Wherein, described first casing wall 1 is the double-decker with interlayer 5, and described first casing wall 1 is set to arc, described the
Two casing walls 2 are to have resilient arc, and the thickness of described second casing wall 2 is thick with the interlayer 5 of described first casing wall 1
Degree is corresponding, and the radian of described second casing wall 2 is consistent with the radian of the first casing wall 1, so that the second casing wall 2 can intert
Enter in the interlayer 5 of described first casing wall 1 and make casing internal diameter adjusted.First casing wall 1 and the second casing wall 2 can facilitate
Ground carries out assembly and disassembly, during assembling, the second casing wall 2 both sides is inserted respectively the folder of the first adjacent casing wall 1 of its both sides
In layer 5, the insertion depth adjusting the second casing wall 2 can make the internal diameter of casing produce change, thus as needed by casing wall group
Fill the casing for having different inner diameters.
Step 3, grouting: into casing, pour into slurry coat method；
Step 4, boring: boring is combined using percussive drill and rotary drilling rig；According to hole position geological condition, select impact
Rig, the drilling sequences of rotary drilling rig；
Step 5, borehole cleaning: take and change the clear quarrel of slurry and rotary drilling rig double door drill bit or percussive drill is drawn quarrel cylinder and drawn quarrel borehole cleaning
Joint borehole cleaning technique, holes to projected depth, pours into the less mud of density in the hole, changes the clear quarrel of slurry；
Step 6, pile: after borehole cleaning is qualified, take percussive drill or crane lifting decentralization steel reinforcement cage to be installed, using leading
Tube method pouring underwater concrete, pulls out casing.Casing pull out after can by the second casing wall 2 the first casing wall 1 from both sides folder
Extract out in layer 5, so that casing is dismantled.
In described large-scale pile base construction method, in step 2, it is provided with close at the both ends open of described first casing wall 1
Strip of paper used for sealing 3, so that interlayer 5 inner sealing of the first casing wall 1, it is to avoid the mud pouring into enters in the interlayer 5 of the first casing wall 1.
In described large-scale pile base construction method, in step 2, described second casing wall 2 at least side is along the described second shield
The radian direction of barrel 2 is provided with draw-in groove, is provided with zigzag projection in described draw-in groove；The interlayer 5 of described first casing wall 1
It is provided with the locking member 3 matching with described zigzag projection at both-side opening, so that described first casing wall 1 and the second casing
The connecting portion of wall 2 is fixed.When the second casing wall 2 is inserted into the first casing wall 1, the zigzag on the second casing wall 2 is convex
Block is mutually engaged with locking member 4, so that the second casing wall 1 irreversibly inserts, makes the internal diameter of casing keep stable, it is to avoid to make
With during the first casing wall 1 and the second casing wall 2 produce dislocation and so that the inside of casing is deformed.
In described large-scale pile base construction method, described casing also includes adjusting button, described regulation button and described lock
Tight part 4 connects, and controls locking member 4 to protrude to be equipped in described zigzag projection, or locking member 4 resets to depart from described sawtooth
Shape projection.Need by the second casing wall 2 extract out with increase casing internal diameter when, press described regulation button, then locking member 4 to return
Retract and disengage from zigzag projection, so that the second casing wall 2 can be freely movable, and the second casing wall 2 is suitably extracted out, arrive
After correct position, operation adjusts button makes locking member 4 again protrude and again be engaged with zigzag projection, you can by the first casing
Wall 1 is retightened with the second casing wall 2, so that the internal diameter of casing is increased.
In described large-scale pile base construction method, the quantity of described first casing wall 1 and the second casing wall 2 is respectively 4.
First casing wall 1 and the second casing wall 2 interval setting, and around for a tubular.
In described large-scale pile base construction method, in step 4, if shape clay is moulded, initially with churning driven for soft in stratum
Machine drill hole, uses percussive drill pore-forming instead after being drilled into pebble layer；In percussive drill boring procedure to stake holes in throw in clay make
Slurry, compacted hole wall simultaneously.Supplement mud in boring procedure crept into keeping and carry mud liquid level in brill metapore into boring and be higher than
More than casing bottom 1.5m, and in the hole mud liquid level descends more than water level elevation 0.8m above Ground.
In described large-scale pile base construction method, in step 5, the density domination of slurry coat method before pouring underwater concrete
In 1.0-1.2kg/cm3, take simultaneously and draw the heavy quarrel in quarrel method cleaning stake bottom.
In described large-scale pile base construction method, in step one, described bore operation stand includes load-bearing support body and connection
Assembly, described load-bearing support body, by several transversely arranged truss monomer compositions, passes through described between adjacent described truss monomer
Coupling assembly is removably attached；This operation platform also includes holding for supporting below described load-bearing support body
The weight lower supporting assembly of support body and the upper support component for supporting rig above described load-bearing support body；Described upper support
Assembly is hydraulic jack, makes the height adjustable of rig.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in specification and embodiment
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Realize other modification, therefore under the universal being limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details.
Claims (8)
1. a kind of large-scale pile base construction method is it is characterised in that comprise the following steps:
Prepare before step one, boring: smooth location, measuring stake holes position, setting mud pit, mud circulation groove, according to building
Upper laying is used for supporting the bore operation stand of rig on construction ground for pile foundation plan-position and drilling sequences；
Step 2, embedded casing: holed to the depth of burying using rotary drilling rig, rotary drilling rig installs casing driver, lifting
Casing, is directed at hole position, and casing is installed in rotation armed lever decentralization；Wherein, described casing is by multiple first casing walls and multiple second shield
Barrel is spaced in the way of the overlap that can intersect and combines, so that the internal diameter of described casing is adjustable；Wherein, described first shield
Barrel is to have double-decker with dissection, and described first casing wall is set to arc, and described second casing wall is that tool is resilient
Arc, and the thickness of described second casing wall is corresponding with the thickness of interlayer of described first casing wall, described second casing wall
Radian consistent with the radian of the first casing wall, so that the second casing wall energy is enough interted in the interlayer of described first casing wall simultaneously
Make casing internal diameter adjusted；
Step 3, grouting: into casing, pour into slurry coat method；
Step 4, boring: boring is combined using percussive drill and rotary drilling rig；According to hole position geological condition, select percussive drill,
The drilling sequences of rotary drilling rig；
Step 5, borehole cleaning: take and change the clear quarrel of slurry and rotary drilling rig double door drill bit or percussive drill is drawn quarrel cylinder and drawn quarrel borehole cleaning joint
Borehole cleaning technique, holes to projected depth, pours into the less mud of density in the hole, changes the clear quarrel of slurry；
Step 6, pile: after borehole cleaning is qualified, take percussive drill or crane lifting decentralization steel reinforcement cage to be installed, using tremie method
Pouring underwater concrete, pulls out casing.
2. as claimed in claim 1 large-scale pile base construction method it is characterised in that in step 2, described first casing wall
It is provided with sealing strip at both ends open, so that the interlayer inner sealing of the first casing wall.
3. as claimed in claim 2 large-scale pile base construction method it is characterised in that in step 2, described second casing wall is extremely
Few side is provided with draw-in groove along the radian direction of described second casing wall, is provided with zigzag projection in described draw-in groove；Described
It is provided with, at the both-side opening of interlayer of one casing wall, the locking member matching with described zigzag projection, so that described first shield
The connecting portion of barrel and the second casing wall is fixed.
4. as claimed in claim 3 large-scale pile base construction method it is characterised in that described casing also include adjust button, institute
State regulation button to be connected with described locking member, and control locking member to protrude to be equipped in described zigzag projection, or locking member is multiple
Position is to depart from described zigzag projection.
5. as claimed in claim 3 large-scale pile base construction method it is characterised in that described first casing wall and the second casing wall
Quantity be respectively 4.
6. as claimed in claim 1 large-scale pile base construction method it is characterised in that in step 4, if stratum is soft shape of moulding gluing
Soil, then hole initially with rotary drilling rig, use percussive drill pore-forming after being drilled into pebble layer instead；In percussive drill boring procedure
Clay pulping, compacted hole wall simultaneously is thrown in into stake holes；
Supplementing mud in boring procedure into boring and being crept into keeping and carry mud liquid level in brill metapore is higher than casing bottom 1.5m
More than, and in the hole mud liquid level descends more than water level elevation 0.8m above Ground.
7. as claimed in claim 1 large-scale pile base construction method it is characterised in that in step 5, before pouring underwater concrete
The density domination of slurry coat method is in 1.0-1.2kg/cm3, take simultaneously and draw the heavy quarrel in quarrel method cleaning stake bottom.
8. as claimed in claim 1 large-scale pile base construction method it is characterised in that in step one, described bore operation stand
Including load-bearing support body and coupling assembly, described load-bearing support body is by several transversely arranged truss monomer compositions, adjacent described purlin
Removably it is attached by described coupling assembly between frame monomer；This operation platform is also included located at described bearing frame
The lower supporting assembly for supporting load-bearing support body below body and above described load-bearing support body for supporting rig
Support component；
Described upper support component is hydraulic jack, makes the height adjustable of rig.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519871.9A CN105178291B (en) | 2015-08-21 | 2015-08-21 | Large pile foundation construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519871.9A CN105178291B (en) | 2015-08-21 | 2015-08-21 | Large pile foundation construction method |
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| CN105178291A CN105178291A (en) | 2015-12-23 |
| CN105178291B true CN105178291B (en) | 2017-01-25 |
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| CN201510519871.9A Active CN105178291B (en) | 2015-08-21 | 2015-08-21 | Large pile foundation construction method |
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| CN105569601B (en) * | 2016-02-02 | 2018-05-22 | 中国科学院武汉岩土力学研究所 | A kind of underground rock project testing bore holes orifice protecting device for adapting to different pore size |
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| CN106049491B (en) * | 2016-08-03 | 2018-02-02 | 江苏建筑职业技术学院 | One kind is exempted to tear precast concrete pile protection template and construction method open |
| CN108360972A (en) * | 2018-01-23 | 2018-08-03 | 四川公路桥梁建设集团有限公司 | Method for constructing bored pile by combining rotary drilling rig and impact drilling rig |
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| CN110593275B (en) * | 2019-09-04 | 2021-03-19 | 浙江化工工程地质勘察院有限公司 | Foundation pit support system |
| CN110777787A (en) * | 2019-10-18 | 2020-02-11 | 中铁十局集团第一工程有限公司 | Method for preventing drilled pile from collapsing by automatically bouncing steel casing |
| CN112177555B (en) * | 2020-10-22 | 2024-06-11 | 中国能源建设集团陕西省电力设计院有限公司 | Detachable wellhead reinforcing and protecting device |
| CN112746615B (en) * | 2020-12-30 | 2022-12-27 | 山东交通学院 | Brine stratum mucky soil cast-in-place pile construction is with protecting a device |
| CN114837189B (en) * | 2022-05-19 | 2023-09-01 | 中国建筑第八工程局有限公司 | Construction method of device for slurry leakage during drilling and grouting in pile foundation construction of backfill area |
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| CN105178291A (en) | 2015-12-23 |
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