CN105970954A - Static pressure pile pipe for sand-gravel compaction pile and static pressure pile-forming construction method - Google Patents
Static pressure pile pipe for sand-gravel compaction pile and static pressure pile-forming construction method Download PDFInfo
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- CN105970954A CN105970954A CN201610539451.1A CN201610539451A CN105970954A CN 105970954 A CN105970954 A CN 105970954A CN 201610539451 A CN201610539451 A CN 201610539451A CN 105970954 A CN105970954 A CN 105970954A
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- pile
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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
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D11/00—Methods or apparatus specially adapted for both placing and removing sheet pile bulkheads, piles, or mould-pipes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
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- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a static pressure pile pipe for a sand-gravel compaction pile and a static pressure pile-forming construction method. The static pressure pile pipe comprises a feed collector, a pipe body, a pile point, a lifting hook and a steel wire rope, wherein after passing through the lifting hook, one end of the steel wire rope is connected with the lower end of the pipe body, the other end of the steel wire rope is connected with the pile point. The static pressure pile-forming construction method is divided into a construction method of a full pile area and a construction method of an empty pile area, wherein the construction method of the full pile area comprises the following steps of: preparing construction, arranging pile positions, measuring pile position heights and calculating and designing the amount of fillers; aligning pile foundations; forming piles at static pressure; filling sand-gravel materials; pulling out pipes and forming the piles; and shifting a piling machine. Different from the construction method of the full pile area, the construction method of the empty pile area is to calculate the number of filler hoppers on the basis of filling coefficients counted in the full pile area. The static pressure pile pipe is simple and convenient to manufacture; in combination with the static pressure construction method for the sand-gravel compaction pile, a new concept of processing the sand-gravel compaction pile is provided; the problem of difficult construction in partial areas of the sand-gravel compaction pile is solved; the construction efficiency and the construction quality are improved, the construction cost is reduced, the construction period is shortened and the construction method is worth of popularization and use.
Description
Technical field
The invention belongs to technical field of foundation treatment, especially relate to a kind of compacted effect static pressure pile pipe and
Static pressure bore forming method.
Background technology
Current domestic compacted effect majority uses vibration sinking tube, diesel oil outburst hammer etc. to construct, and uses
It is the most rare that static pile press carries out constructing, and for this construction technology this pile pipe of special work, carries out
Special construction.
Summary of the invention
In view of this, it is contemplated that propose a kind of compacted effect static pressure pile pipe and static pressure bore forming side
Method, can solve the problems referred to above.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of compacted effect static pressure pile pipe, including loading head, body, pile top, suspension hook and steel wire rope,
Body upper end is fixed and be communicated in described loading head, and pile top folding can be connected to body, one end hinge of pile top
Being connected to body lower end, suspension hook is fixed on inboard wall of tube body, steel wire penetrating suspension hook, and one end of steel wire rope connects
Body lower end, the other end of steel wire rope connects pile top, and when pile top is in closure state, steel wire rope is at pipe
Internal portion is case of bending, and when pile top is in open mode, steel wire rope is in exceptionally straight state, opens shape
In Semi-folding structure between pile top and body lower end under state.
Further, the described U-shaped structure of suspension hook profile, use round steel bending to form.
Further, the hinged place of described pile top and body and suspension hook are in the homonymy of inboard wall of tube body.
Further, the uncovered structure of taper that described loading head is wide at the top and narrow at the bottom.
A kind of static pressure bore forming method, with the use of described compacted effect static pressure pile pipe, and includes
Following steps:
Step A, the laying of stake position, the measurement of higher degree of stake position, calculating design amount of filler and calculating Kong Zhuan district filler
Bucket number；
Step B, pile foundation para-position；
Step C, static pressure pile；
Step D, doses sand material；
Step E, tube drawing pile；
Step F, stake machine shifts.
Further, in described step A, survey crew is according to construction drawing and lays bit map/bitmap GPS
Or total station survey unwrapping wire, make control axis, sideline mark of driving piles；After surveying setting-out completes, execute
It is each that work field operation personnel put layout drawing, control axis and the pull-out of piling site boundary ribbon according to stake
Individual stake point, stake buries timber underground at position, finds stake position accurately by ruler bracing wire, and field technician is to each stake point
Deviation carry out checking errorless after, with bamboo let, stake point is marked；Elevation at each stake position is measured with level gauge；
According to stake position absolute altitude with design stake position at elevation mathematic interpolation design the immersed tube degree of depth, design the immersed tube degree of depth with
The product of stake cross-sectional area is design amount of filler.If the static press piling construction of empty stake region, based on Man Zhuan district
Fullness coefficient representative value is counted, on this basis according to designing pile length and design filler on the basis of construction
Amount and fullness coefficient representative value product calculate and need amount of filler and powder funnel number.
Further, in described step B, the in place and pile pipe centering straightening including a machine, wherein
Stake machine is in place: after static pile press installation and debugging, walk at stake position, makes on pile pipe center and ground
The little timber of identification pile position is directed at substantially, leveling static pile press；
Pile pipe centering straightening: after the crane that pile pipe is carried by static pile press hangs in pile chuck jaw, slowly
Pile top is dropped to overhead till about 10cm, is then driven pile chuck clamping pile pipe by hydraulic jack,
Fine setting static pile press makes pile top align piles position, and body is pressed in soil 0.5～1.0m, presses under suspending,
Again from the two of pile pipe orthogonal sides correction pile pipe perpendicularity, when pile pipe perpendicularity deviation is less than 0.5%
In the case of piling pipe.
Further, in described step C, stretch the power of journey by pile pipe pressure by the piling oil cylinder of static pile press
In burying, when pile pipe is pressed into the dimensional depth of mark, press under terminating.
Further, in described step D, when pile pipe is pressed onto design altitude by static pile press, static pressure
Crane on stake machine is hung rubble batch can and is poured in pile pipe by hopper by rubble.
Further, in described step E, during pile pulling pipe to pile top just open position, stop pile pulling pipe,
Determine when rubble falls, continue pile pulling pipe, repeatedly stretch journey by hydraulic jack, pile pipe is pulled out by backhaul.
Relative to prior art, compacted effect static pressure pile pipe of the present invention and static pressure bore forming side
Method has the advantage that simple for production, in conjunction with crushed stone pile static pressure construction, it is proposed that a kind of crowded
Close broken stone pile processes new approaches, the problem solving crushed stone pile subregion constructional difficulties, improves
Efficiency of construction and quality, reduce construction cost, shortens construction period, is worth of widely use.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, the present invention's
Schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.?
In accompanying drawing:
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the enlarged diagram of loading head in Fig. 1；
Fig. 3 is the connection diagram of the pile top under pile sinking state and body；
Fig. 4 is the outside schematic diagram of the pile top under lifting state and body；
Fig. 5 is the connection diagram of the pile top under lifting state and body；
Description of reference numerals:
1-loading head；2-body；3-pile top；4-suspension hook；5-steel wire rope.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
On " ", D score, "front", "rear", "left", "right", " vertically ", " level ",
" push up ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be for based on shown in accompanying drawing
Orientation or position relationship, be for only for ease of the description present invention and simplifying and describe rather than instruction or dark
Show that device or the element of indication must have specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only used for describing
Purpose, and it is not intended that instruction or hint relative importance or implicit indicate indicated technical characteristic
Quantity.Thus, the feature defining " first ", " second " etc. can be expressed or impliedly wrap
Include one or more this feature.In describing the invention, except as otherwise noted, " multiple "
It is meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term
" install ", " being connected ", " connection " should be interpreted broadly, and connect, also for example, it may be fixing
Can be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.
For the ordinary skill in the art, can understand that above-mentioned term is in the present invention by concrete condition
In concrete meaning.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Fig. 1～5, a kind of compacted effect static pressure pile pipe, including loading head 1, body 2, stake
Point 3, suspension hook 4 and steel wire rope 5, body 2 upper end, pile top 3 are fixed and be communicated in described loading head 1
Folding can be connected to body 2, one end of pile top 3 is articulated with body 2 lower end, and suspension hook 4 is fixed on body
2 inwalls, steel wire rope 5 is through suspension hook 4, one end connection pipe body 2 lower end of steel wire rope 5, steel wire rope 5
The other end connect pile top 3, when pile top 3 is in closure state, steel wire rope 5 is inside body 2
Case of bending, when pile top 3 is in open mode, steel wire rope 5 is in exceptionally straight state, under open mode
Pile top 3 and body 2 lower end between in Semi-folding structure.
The described suspension hook 4 U-shaped structure of profile, uses round steel bending to form, and suspension hook 4 with steel wire rope 5 is
When pile pipe is mentioned, pile top 3 is carried out spacing, prevent pile top 3 reverse.
The hinged place of described pile top 3 and body 2 and suspension hook 4 are in the homonymy of body 2 inwall.Described collection
The uncovered structure of taper that glassware 1 is wide at the top and narrow at the bottom.
The wall thickness of described body 2 is 2cm, and external diameter is 50cm；A diameter of 60cm of pile top 3, highly
For 15cm；The uncovered external diameter of loading head 1 is 80cm, and slot external diameter is 50cm, and height is 50cm,
And use 2cm thickness steel plate to roll to form；The cross-sectional diameter of the round steel that suspension hook 4 is used is 25mm,
It is fixedly welded on the interior position away from 2m at the bottom of pipe of pipe.
The method making above-mentioned compacted effect static pressure pile pipe:
(1) according to design stake footpath and stake long making static pressed pile, body 2 use 2cm steel plate to roll and
Become, compared with the design little 10cm in stake footpath, it is simple to pile smoothly；
(2) pile top 3 diameter is identical with design stake footpath compared with the big 10cm of pipe fitting, i.e. pile top 3, pile top 3 with
Body 2 is hinged；
(3) suspension hook 4 is welded on inside pile pipe, and with the hinged place homonymy of pile top 3 and body 2, and
Position at 2m at the bottom of pipe.
(4) by steel wire rope 5 through suspension hook 4, one end connection pipe body 2 lower end of steel wire rope 5, steel wire rope
The other end of 5 connects pile top 3.
Using method: originally this pile pipe is pile sinking state, and static pile press pile gripper is held tightly when starting to act on
Pile pipe, promotes pile pipe and leaves ground.Static pile press moves radially to piling impact point, pile top is directed at
Point position.Static pile press starts to press hole pile, after getting to height at the bottom of design stake, is carried by static pile press
Crane hangs hopper from loading head feeding.Promote pile pipe, and be spaced 3～4m and carry out anti-plug, now a stake
Pipe is lifting state, until it reaches pile pipe is extracted by design stake top.
A kind of static pressure bore forming method, is divided into full stake region static press piling construction technology and empty stake region quiet
Defeat pile constructing process.Its fullness in the epigastrium and abdomen stake region static press piling construction technology is:
With the use of compacted effect static pressure pile pipe, and comprise the following steps:
Step A, survey crew is put according to construction drawing and laying bit map/bitmap GPS or total station survey
Line, makes control axis, sideline mark of driving piles；
Stake position is laid: after surveying setting-out completes, job site operating personnel puts layout drawing, control according to stake
Axis and piling site boundary ribbon pull out each point, bury the timber of long 15cm at stake position underground,
Find stake position accurately by 50m ruler bracing wire, field technician each stake point deviation is checked errorless after,
With bamboo let, stake point is marked；
The stake position measurement of higher degree: measure elevation at each stake position with level gauge, and record as ground at this position
Elevation；
Calculate design amount of filler: according to stake position absolute altitude (being ground elevation on charting) and design stake position
The mathematic interpolation design immersed tube degree of depth of place's elevation, the design immersed tube degree of depth is design with the product of stake cross-sectional area
Amount of filler.
Calculating formula is:
Vd=S h=p r2H (formula 5.4.2-1)
Vd in formula: design amount of filler, m3
S: stake cross-sectional area, m2
R: stake radius, m
H: the immersed tube degree of depth, m
Step B, pile foundation para-position: include that a machine is in place and pile pipe centering straightening, wherein
Stake machine is in place: after static pile press installation and debugging, walks at stake position, makes pile pipe center (i.e. stake machine
Pile chuck jaw center) substantially it is directed at the little timber of identification pile position on ground, leveling static pile press,
Again check errorless after, long stride (long ship) is landed stress.Field technician record pile foundation in place time
Between as the piling time started；
Pile pipe centering straightening: after the 16T crane that pile pipe is carried by static pile press hangs in pile chuck jaw,
Slowly pile top 3 is dropped to overhead till about 10cm by special messenger's conductor driver, then by hydraulic jack
Driving pile chuck clamping pile pipe, fine setting static pile press makes pile top 3 align piles position, and is pressed into by body 2
In soil 0.5～1.0m, press under suspending, then from the two of pile pipe orthogonal sides correction pile pipe perpendicularity, when
Pile pipe perpendicularity deviation is less than piling pipe in the case of 0.5%.
Step C, static pressure pile: stretch the power of journey by pile pipe press-in soil by the piling oil cylinder of static pile press
In, the range of piling oil cylinder is 2.2m, so pressing down, pile pipe embedded depth is about 2.2m,
Then unclamp pile chuck oil cylinder backhaul, pile chuck rising clamps pile pipe again and presses down, as
This is repeated.When pile pipe is pressed into dimensional depth (i.e. the projected depth) of mark, under just can terminating
Pressure.
Step D, doses sand material: when pile pipe is pressed onto design altitude by static pile press, static press piling
Crane on machine is hung rubble batch can and is poured in pile pipe by hopper by rubble.Will be according to squeezing before pouring into rubble
Theoretical amount of filler (fullness coefficient is temporarily by 1.05) the estimation loader powder funnel number of close stake, as guidance
Carry out till filler fills up material in pile pipe.Field technician records practical filling material amount.
Step E, tube drawing pile: during tube drawing, first pulls out about 50cm, should pause about 10 seconds, make
The pile top 3 of pile pipe bottom is opened, and determines when rubble falls, and could continue tube drawing, anti-by hydraulic jack
Stretch journey again, pile pipe is pulled out by backhaul, and pipe-pulling speed is unsuitable too fast, and oil cylinder is each stretches journey (2.2m) control
System controls 38～42s 20～23s, backhauls.Field technician records pile pipe and extracts the time for knot
The bundle moment.
Step F, stake machine shifts.
Empty stake region static press piling construction technology is distinguished as with full stake region static press piling construction technology:
Empty stake region static press piling construction technology also needs to calculating needs powder funnel number, estimates and doses sand material
Amount, calculating formula is:
Vd=S h=p r2H (formula 5.5.2-1)
Vd in formula: design amount of filler
S: stake cross-sectional area
R: stake radius
H: designing pile length
Every needs amount of filler to calculate and the calculating of powder funnel number
Every needs amount of filler to calculate:
Vt=Vd × k (formula 5.5.2-2)
Vt in formula: need amount of filler
K: this section fullness coefficient representative value
Powder funnel number calculates:
N=Vt/Vz (formula 5.5.2-3)
N in formula: powder funnel number
Vz: loader dipper capacity
The feature of this construction method:
1 compared with tradition compacted effect construction method, and this engineering method proposes fullness coefficient representative value
Concept and computational methods, Man Zhuan district instructs Kong Zhuan district to construct, and highlights Kong Zhuan district effective stake especially and processes
The degree of depth and the long control of stake, it is possible to preferably ensure the construction quality containing Kong Zhuan district compaction pile.
2, static pile press efficiency of construction is stable, and every machine-team can be constructed φ 600, long 10m stake 40,
Relatively vibration sinking tube pile efficiency doubles and has a surplus, it is possible to shorten the construction period.
The scope of application: this engineering method is applicable to possess earthquake liquefaction trend and use the techniques such as conventional vibration immersed tube
The sandy soil that cannot construct, unsaturated rockmass, based on ashes, slag, the miscellaneous fill of building waste
And loose soil foundation, process the degree of depth typically at 8～15m alluvial plain of Huanghe silts, sand
Quality matter section, level of ground water are higher and the hard soil layer in top layer is especially suitable for using this method to construct.
" Static piling " compacted effect technological principle: " Static piling " compacted effect is logical
Cross the compacted sand of vibrations of immersed tube, improve the degree of compaction of sand；Pour into sandstone again as drainage channel, general
Imported in non-liquidized layer by sandstone because porosity reduces the water discharged during earthquake vibration, thus reach
Eliminate the earthquake liquefaction problem of saturated sand.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, should be included in
Within protection scope of the present invention.
Claims (10)
1. a compacted effect static pressure pile pipe, it is characterised in that: include loading head (1), body (2),
Pile top (3), suspension hook (4) and steel wire rope (5), described loading head (1) is fixing and is communicated in body
(2) upper end, pile top (3) folding can be connected to body (2), and one end of pile top (3) is articulated with pipe
Body (2) lower end, suspension hook (4) is fixed on body (2) inwall, and steel wire rope (5) passes suspension hook (4),
One end connection pipe body (2) lower end of steel wire rope (5), the other end of steel wire rope (5) connects pile top (3),
When pile top (3) is in closure state, steel wire rope (5) is internal at body (2) is case of bending,
When pile top (3) is in open mode, steel wire rope (5) is in the stake under exceptionally straight state, open mode
In Semi-folding structure between point (3) and body (2) lower end.
Compacted effect static pressure pile pipe the most according to claim 1, it is characterised in that hang described in:
The U-shaped structure of hook (4) profile, uses round steel bending to form.
Compacted effect static pressure pile pipe the most according to claim 1, it is characterised in that: described stake
The hinged place of point (3) and body (2) and suspension hook (4) are in the homonymy of body (2) inwall.
Compacted effect static pressure pile pipe the most according to claim 1, it is characterised in that: described collection
The uncovered structure of taper that glassware (1) is wide at the top and narrow at the bottom.
5. a static pressure bore forming method, it is characterised in that arbitrary with the use of Claims 1 to 4
Compacted effect static pressure pile pipe described in Xiang, and comprise the following steps:
Step A, the laying of stake position, the measurement of higher degree of stake position, calculating design amount of filler and calculating Kong Zhuan district filler
Bucket number；
Step B, pile foundation para-position；
Step C, static pressure pile；
Step D, doses sand material；
Step E, tube drawing pile；
Step F, stake machine shifts.
Static pressure bore forming method the most according to claim 5, it is characterised in that: described step
In A, survey crew is according to construction drawing and lays bit map/bitmap GPS or total station survey unwrapping wire, fixed
Go out control axis, sideline mark of driving piles；
After surveying setting-out completes, job site operating personnel puts layout drawing, control axis and piling according to stake
Site boundary ribbon pulls out each point, and stake buries timber underground at position, finds stake position accurately by ruler bracing wire,
Field technician each stake point deviation is checked errorless after, with bamboo let, stake point is marked；
Elevation at each stake position is measured with level gauge；
According to stake position absolute altitude and the mathematic interpolation design immersed tube degree of depth designing elevation at stake position, design immersed tube is deep
Degree is design amount of filler with the product of stake cross-sectional area；
If the static press piling construction of empty stake region, on the basis of constructing based on Man Zhuan district, count fullness coefficient
Representative value, calculates according to designing pile length and design amount of filler and fullness coefficient representative value product on this basis
Need amount of filler and powder funnel number.
Static pressure bore forming method the most according to claim 5, it is characterised in that: described step B
In, the in place and pile pipe centering straightening including a machine, wherein
Stake machine is in place: after static pile press installation and debugging, walk at stake position, makes on pile pipe center and ground
The little timber of identification pile position is directed at substantially, leveling static pile press；
Pile pipe centering straightening: after the crane that pile pipe is carried by static pile press hangs in pile chuck jaw, slowly
Pile top (3) is dropped to overhead till about 10cm, then driven pile chuck clamping stake by hydraulic jack
Pipe, fine setting static pile press makes pile top align piles position, and by body (2) press-in soil 0.5～1.0m,
Press under Zan Tinging, then from the two of pile pipe orthogonal sides correction pile pipe perpendicularity, when pile pipe perpendicularity deviation is little
Piling pipe in the case of 0.5%.
Static pressure bore forming method the most according to claim 5, it is characterised in that: described step C
In, pile pipe is pressed in soil by the power being stretched journey by the piling oil cylinder of static pile press, when pile pipe is pressed into mark
During the dimensional depth noted, press under terminating.
Static pressure bore forming method the most according to claim 5, it is characterised in that: described step
In D, when pile pipe is pressed onto design altitude by static pile press, the crane on static pile press hangs rubble
Rubble is poured in pile pipe by batch can by hopper.
Static pressure bore forming method the most according to claim 5, it is characterised in that: described step
In E, stop pile pulling pipe during pile pulling pipe to pile top just open position, determine when rubble falls, continue
Pile pulling pipe, stretches journey repeatedly by hydraulic jack, pile pipe is pulled out by backhaul.
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| CN201610539451.1A CN105970954B (en) | 2016-07-08 | 2016-07-08 | Compacted effect static pressure pile pipe and static pressure bore forming method |
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| CN201610539451.1A CN105970954B (en) | 2016-07-08 | 2016-07-08 | Compacted effect static pressure pile pipe and static pressure bore forming method |
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| Publication number | Publication date |
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| CN105970954B (en) | 2019-02-22 |
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Address after: 300384 Tianjin Binhai New Area High-tech Zone Huayuan Industrial Area No. 2, 4-2101 Patentee after: China Construction Municipal Construction Group Co., Ltd. Address before: 300384 Tianjin Binhai New Area High-tech Zone Huayuan Industrial Area No. 2, 4-2101 Patentee before: Sinohydro Tianjin Engineering Co.,Ltd. |