CN108265718A - Grouting steel pipe pile foundation stabilization system and its construction method - Google Patents
Grouting steel pipe pile foundation stabilization system and its construction method Download PDFInfo
- Publication number
- CN108265718A CN108265718A CN201810200374.6A CN201810200374A CN108265718A CN 108265718 A CN108265718 A CN 108265718A CN 201810200374 A CN201810200374 A CN 201810200374A CN 108265718 A CN108265718 A CN 108265718A
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- Prior art keywords
- pile
- steel
- pipe pile
- hole
- static pressure
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
-
- 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
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
Abstract
The present invention provides a kind of grouting steel pipe pile foundation stabilization system and its construction methods, pressure pile reaction frame is fixed by burying static pressure pile anchor rod on the bottom plate of building structure, using the gravity load that building structure can play as pressure pile reaction, it is pressed into ground paragraph by paragraph in the piling hole that the pile cutoff of steel-pipe pile is reserved or dug from bottom plate with jack, easy for construction, work surface and working space are smaller；It is linked into an integrated entity after anchor pole is bent when sealing stake with contact muscle with the anchor rib at the top of steel pipe column, pile crown and the bottom plate of building structure are linked together using contraction-free grouting concrete, achieve the purpose that improve foundation bearing capacity and control settlement, sufficient length is designed according to specific stressing conditions.Steel-pipe pile lower part pile body uses constraint formula slip casting, is formed and expands pile body position, enhancing pile body and surrounding soil bond stress, therefore steel-pipe pile single pile resistance to plucking (resistance to compression) bearing capacity after slip casting enhances, and pile crown combines the whole stress of formation with basic rigidity connection.
Description
Technical field
The present invention relates to construction foundation working technical field more particularly to a kind of grouting steel pipe pile foundation stabilization system and its
Construction method.
Background technology
Structure design error, building work(caused by the basement structure to have come into operation is had insufficient data due to geological mapping
The reasons such as energy change, working load increase, pile foundation construction mass defect need to carry out foundation stabilization, traditional ground reinforcement system
There are the shortcomings that consolidation effect is unstable, work surface and working space are big, construction speed is slow, cost is high.
Invention content
It is existed in the prior art or potential shortcoming in view of above-mentioned, the present invention provides a kind of grouting steel pipe pile grounds
Reinforcement system and its construction method, construction method is easy, and work surface and action space are smaller, and can ensure preferable ground
Consolidation effect.
To achieve the above object, the first aspect of the present invention provides a kind of grouting steel pipe pile foundation stabilization construction method,
It includes：
In the piling hole that steel-pipe pile is set on the bottom plate of building structure, and the embedded static pressure piled anchor around the piling hole
Bar；
In fixing pressure pile reaction frame in the static pressure pile anchor rod, the pressure pile reaction frame includes being connected to the static pressure piled anchor
The vertical supporting of bar and the cross-brace being installed on the vertical supporting；
By the use of the cross-brace of the pressure pile reaction frame as the top support top of jack, the bottom of the jack
The pile cutoff of steel-pipe pile is support on, the ground pile cutoff of steel-pipe pile being pressed into out of described piling hole paragraph by paragraph below bottom plate carries out steel
The pile sinking of pile pile, the lower end closed of the steel-pipe pile, the upper end of the steel-pipe pile are connected with anchor rib, the part of the steel-pipe pile
Pile cutoff offers injected hole and outside is coated with slip casting cuff；
After the pile sinking of the steel-pipe pile to be done, in removing the pressure pile reaction frame in the static pressure pile anchor rod, using connection
It is that muscle links together the static pressure pile anchor rod and the anchor rib；
Slip casting is carried out to the inside of the steel-pipe pile, slurries are while the inside for filling the steel-pipe pile, permeation parts
The injected hole opened up on pile cutoff is entered in the slip casting cuff, and the slip casting cuff is softened and is formed and expand pile body portion
Position；And
After the slip casting of the steel-pipe pile to be done, envelope stake material is filled up in the piling hole, carries out envelope stake, and will be described quiet
Piling anchor pole, the anchor rib and the contact muscle are embedded in envelope stake material.
In the embodiment of grouting steel pipe pile foundation stabilization construction method of the present invention, the part pile cutoff of the injected hole is offered
Positioned at the bottom position of the steel-pipe pile.
In the embodiment of grouting steel pipe pile foundation stabilization construction method of the present invention, the part pile cutoff of the injected hole is offered
Pile cutoff is saved positioned at the bottom end two of the steel-pipe pile, often saves and is uniformly provided with multiple slip castings in the pile cutoff upper edge stake week
Hole.
In the embodiment of grouting steel pipe pile foundation stabilization construction method of the present invention, the both ends open of the slip casting cuff has no
Seam is socketed on the outer wall of corresponding pile cutoff, and the middle part of the slip casting cuff is arc-shaped after slip casting to be blasted outward in the ground.
In the embodiment of grouting steel pipe pile foundation stabilization construction method of the present invention, contact muscle is being used by the static pressure piled anchor
Before the step of bar and the anchor rib link together, first the top of the static pressure pile anchor rod and the anchor rib is carried out curved
Folding, and the bending part of the static pressure pile anchor rod and anchor rib is made to be located at the interior location in the piling hole, then using described
It is muscle to the bending part of the static pressure pile anchor rod and the anchor rib into joining line.
In the embodiment of grouting steel pipe pile foundation stabilization construction method of the present invention, relative to the hole heart in the piling hole in institute
The surrounding for stating piling hole is symmetrically distributed with static pressure pile anchor rod described in even number root, also, static pressure piled anchor described in symmetrical one group
It is linked together between bar using the same contact muscle.
In the embodiment of grouting steel pipe pile foundation stabilization construction method of the present invention, the piling hole, which has, supplies the steel pipe column
Pile cutoff press-in relatively narrow hole portion and wider bore portion for burying the static pressure pile anchor rod, the relatively narrow hole portion be set on the hole heart
The lower part in the wider bore portion.
In the embodiment of grouting steel pipe pile foundation stabilization construction method of the present invention, the steel-pipe pile has stake described in multistage
Section, and be attached between the pile cutoff using casing joint.
In the embodiment of grouting steel pipe pile foundation stabilization construction method of the present invention, the encapsulating compound is in the milk using ungauged regions
Material.
The second aspect of the present invention provides a kind of grouting steel pipe pile foundation stabilization system, including being opened in building structure
Bottom plate on piling hole and the static pressure pile anchor rod that is embedded in the piling hole, the pile cutoff of steel-pipe pile enter from the piling pore pressure
In ground below the bottom plate, the lower end closed of the steel-pipe pile, the upper end of the steel-pipe pile is connected with anchor rib, the anchor
Gu muscle is linked together with the static pressure pile anchor rod by contacting muscle；The part pile cutoff of the steel-pipe pile offers injected hole and outer
Portion is coated with slip casting cuff, and the slip casting opened up on slurries and the slurries permeation parts pile cutoff is filled in the steel-pipe pile
Hole is entered in the slip casting cuff, by the slip casting bag casing brace open form into pile body position is expanded, is filled in the piling hole
Stake material is sealed, the static pressure pile anchor rod, the anchor rib and the contact muscle are embedded in envelope stake material.
Due to the adoption of the above technical scheme, make the invention has the advantages that：
1st, pressure pile reaction frame is fixed by burying static pressure pile anchor rod on the bottom plate of building structure, can be sent out with building structure
In the piling hole that the pile cutoff of steel-pipe pile is reserved or dug from bottom plate as pressure pile reaction, with jack by the gravity load waved by
Section press-in ground, easy for construction, work surface and working space are smaller, this hair can also be used in the basement structure layer to have come into operation
Bright method completes foundation stabilization.
It is linked into an integrated entity after anchor pole is bent when the 2nd, sealing stake with contact muscle with the anchor rib at the top of steel pipe column, using ungauged regions
Grouting material links together pile crown and the bottom plate of building structure, achievees the purpose that improve foundation bearing capacity and control settlement, root
Sufficient length is designed according to specific stressing conditions.
3rd, steel-pipe pile end is closed using steel plate, and first segment, the second section pile body are true during slip casting using constraint formula slip casting
Grouting amount and grouting pressure are protected, the slip casting of constraint formula, which is formed, expands pile body position, enhancing pile body and surrounding soil bond stress, therefore steel
Pile pile single pile resistance to plucking (resistance to compression) bearing capacity after slip casting enhances, and pile crown combines the whole stress of formation with basic rigidity connection.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the construction process figure of the grouting steel pipe pile foundation stabilization construction method of the embodiment of the present invention.
Fig. 2 is the structure diagram of the grouting steel pipe pile foundation stabilization system of the embodiment of the present invention.
Fig. 3 is the Facad structure signal of the pressure pile reaction frame in the grouting steel pipe pile foundation stabilization system of the embodiment of the present invention
Figure.
Fig. 4 is the side structure signal of the pressure pile reaction frame in the grouting steel pipe pile foundation stabilization system of the embodiment of the present invention
Figure.
Fig. 5 is the A-A cross-sectional views of Fig. 4.
Structure diagrams of the Fig. 6 for steel-pipe pile in the grouting steel pipe pile foundation stabilization system of the embodiment of the present invention.
Fig. 7 is the planar structure schematic diagram of the sealing of hole node of the grouting steel pipe pile foundation stabilization system of the embodiment of the present invention.
Fig. 8 is the cross-sectional view of the sealing of hole node of the grouting steel pipe pile foundation stabilization system of the embodiment of the present invention.
Fig. 9 is the pile splicing structure signal of the pile cutoff of section up and down in the grouting steel pipe pile foundation stabilization system of the embodiment of the present invention
Figure.
The correspondence of reference numeral and component is as follows：
The bottom plate 1 of building structure；Piling hole 2；The pile cutoff 3 of steel-pipe pile；Expand pile body position 4；Steel-pipe pile closing stake end 5；
Ground 6；The injected hole 7 that steel-pipe pile is reserved；Casing joint 8；Slip casting cuff 9；Pressure pile reaction frame 10；The lateral branch of pressure pile reaction frame
Support 11；The vertical supporting 111 of pressure pile reaction frame；The top plate 112 of pressure pile reaction frame；Bolt 12；Pin hole 121；Pressure pile reaction frame
Pedestal 13；The height adjusting structure 14 of pressure pile reaction frame；Static pressure pile anchor rod 15；Anchor rib 16；Contact muscle 17；Electric block 18；
Jack 19.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
Referring initially to shown in Fig. 1, applied the technical solution adopted by the present invention is that providing a kind of grouting steel pipe pile foundation stabilization
Work method, mainly includes the following steps that：
Step 101：In the piling hole that steel-pipe pile is set on the bottom plate of building structure, and the embedded static pressure around piling hole
Pile anchor rod；Step 102：In fixing pressure pile reaction frame in static pressure pile anchor rod, which includes being connected to static pressure pile anchor rod
Vertical supporting and the cross-brace that is installed on vertical supporting；
Step 103：By the use of pressure pile reaction frame cross-brace as jack top support top, jack bottom branch supports
In the pile cutoff of steel-pipe pile, the ground that the pile cutoff of steel-pipe pile is pressed into out of piling hole paragraph by paragraph below bottom plate carries out the heavy of steel-pipe pile
Stake；Wherein, the lower end closed of steel-pipe pile, the upper end of steel-pipe pile are connected with anchor rib, and the part pile cutoff of steel-pipe pile offers slip casting
Hole and outside are coated with slip casting cuff；
Step 104：After the pile sinking of steel-pipe pile to be done, in removing pressure pile reaction frame in static pressure pile anchor rod, using contact muscle
Static pressure pile anchor rod and anchor rib are linked together；
Step 105：Slip casting is carried out to the inside of steel-pipe pile, slurries are while the inside for filling steel-pipe pile, permeation parts
The injected hole opened up on pile cutoff is entered in slip casting cuff, and slip casting cuff is softened and is formed and expand pile body position；And
Step 106：After the slip casting of steel-pipe pile to be done, envelope stake material is filled up in piling hole, carries out envelope stake, and by static pressed pile
Anchor pole, anchor rib and contact muscle are embedded in envelope stake material.
Using above-mentioned steps, construction obtains a kind of grouting steel pipe pile foundation stabilization system of the present invention, such as Fig. 2, Fig. 7 and figure
Shown in 8, which mainly includes the piling hole 2 being opened on the bottom plate 1 of building structure and buries
Static pressure pile anchor rod 15 in the piling hole 2, the pile cutoff 3 of steel-pipe pile are pressed into from piling hole 2 in the ground 6 of 1 lower section of bottom plate, steel pipe
The lower end closed (stake end using steel plate close) of stake forms steel-pipe pile and closes stake end 5, avoid during piling in the soil body mud into
Enter pile body.The upper end inner wall of steel-pipe pile is welded with anchor rib 16, and anchor rib 16 is welded with static pressure pile anchor rod 15 by contacting muscle 17
Together；The part pile cutoff of steel-pipe pile offers injected hole 7 and outside is coated with slip casting cuff 9, and the inside of steel-pipe pile is filled with
The injected hole 7 opened up on concrete slurry and slurries permeation parts pile cutoff can be entered in slip casting cuff 9, and slip casting cuff 9 is supportted
Open form fills envelope stake material and carries out envelope stake, static pressure pile anchor rod 15, anchor rib 16 and contact muscle into pile body position 4 is expanded in piling hole 2
17 are embedded in envelope stake material.
Foundation stabilization construction method and its obtained foundation stabilization system using above-described embodiment, can reach it is following preferably
Effect：
1st, pressure pile reaction frame is fixed by burying static pressure pile anchor rod on the bottom plate of building structure, can be sent out with building structure
As pressure pile reaction, (pressure pile reaction frame is fixed on architecture basics the gravity load waved, and during very heavy jacked pile, architecture basics provide
The power of fixed pressure pile reaction frame), it presses paragraph by paragraph in the piling hole that the pile cutoff of steel-pipe pile is reserved or dug from bottom plate with jack
Enter ground, easy for construction, work surface and working space are smaller, and present invention side can also be used in the basement structure layer to have come into operation
Method completes foundation stabilization.
It is linked into an integrated entity after anchor pole is bent when the 2nd, sealing stake with contact muscle with the anchor rib at the top of steel pipe column, using ungauged regions
Grouting material links together pile crown and the bottom plate of building structure, achievees the purpose that improve foundation bearing capacity and control settlement, root
Sufficient length is designed according to specific stressing conditions.
3rd, steel-pipe pile end is closed using steel plate, and first segment, the second section pile body are true during slip casting using constraint formula slip casting
Grouting amount and grouting pressure are protected, the slip casting of constraint formula, which is formed, expands pile body position, enhancing pile body and surrounding soil bond stress, therefore steel
Pile pile single pile resistance to plucking (resistance to compression) bearing capacity after slip casting enhances, and pile crown combines the whole stress of formation with basic rigidity connection.
The grouting steel pipe pile foundation stabilization construction method in the embodiment of the present invention is further spread out below in conjunction with the accompanying drawings,
The points for attention being described in detail in Specific construction technique, referring to as follows：
First, preparation of construction：
It can refer to shown in Fig. 2 and Fig. 3, construction of bottom plates, determined according to design drawing pre- in advance on the bottom plate 1 of building structure
Position and the diameter in piling hole 2 are stayed, and bolthole is embedded with simultaneously on the bottom plate 1 around piling hole 2, as shown in figure 8, piling
Hole 2 has for the relatively narrow hole portion of the press-in of pile cutoff 3 of steel pipe column and the wider bore portion for burying static pressure pile anchor rod 15, should be compared with narrower bore
Portion is set, and the relatively narrow hole portion is located at the underface in the wider bore portion, the two up/down perforation with the wider bore portion with the hole heart.Anchor pole
Hole depth enters bottom plate, and static pressure pile anchor rod 15 can be penetrated in bolthole and is fixed in bolthole, and bolthole fills up sand in construction,
It is purged again before to be onstructed.
2nd, installation pressure pile reaction frame 10：
Static pressure pile anchor rod 15 is penetrated in bolthole and fixed first, pressure pile reaction frame 10 will keep vertical, while top
Must with building structure at the middle and upper levels floor structure floor beam body 11 carry out support top, as seen in figures 3-5, static pressure pile anchor rod 15 with
Pressure pile reaction frame 10 is anchored using bolt or directly welding, it is ensured that firm stable.Pressure pile reaction frame 10 in the present embodiment
Including the cross-brace 11 for being connected to the vertical supporting 111 of static pressure pile anchor rod 15 and being installed on vertical supporting 111, in this implementation
In example, 4 static pressure pile anchor rods are symmetrical arranged in the both sides in piling hole, the top of every static pressure pile anchor rod connects a vertical supporting
111, in vertical supporting upper edge, its short transverse is spaced apart equipped with multiple pin holes 121, the spacing and cross-brace of pin hole 121
Equivalent width, inserted respectively in corresponding two groups of neighbouring pin holes 121 of two vertical supportings 111 of every side
Enter bolt 12, bolt 12 is made to be connected horizontally between two vertical supportings 111 of every side, formed between upper and lower two bolts horizontal
To the limiting section of support 11, the bolt 12 on 11 Horizontal limiting of cross-brace of pressure pile reaction frame 10 and the vertical supporting of both sides
In the limiting section formed, the bottom of cross-brace 11 is shelved on underlying bolt, the top of cross-brace 11
It is against under the bolt being located above, cross-brace 11 is located on vertical supporting 111 using bolt 12, thus by lateral branch
Support 11 is installed on vertical supporting 111, also, (bolt is by being inserted into different height by changing the height and position of bolt 12
Change its height and position in pin hole), thus it is possible to vary the height and position of cross-brace 11 meets the steel pipe column under different operating modes
The requirement of piling construction.Further, the top of more vertical supportings 111 of pressure pile reaction frame 10 can be connected using top plate 112
It is connected together, forms door type frame system, good integrity.Cross-brace 11 is hung over by electric block 18 under top plate 112
Side, convenient for passing through the height that electric block 18 adjusts cross-brace 11, after cross-brace 11 is highly adjusted in place, then by bolt
12 are inserted into the pin hole 121 on the vertical supporting 111 of corresponding position, and cross-brace 11 is limited, utilizes cross-brace
11 as jack top branch support.
Further, the pressure pile reaction frame 10 in the present embodiment be height-adjustable reaction frame, vertical supporting 111
For height adjustable structure, the reaction frame pedestal 13 including being arranged on bottom, the bottom of the reaction frame pedestal 13 sets bolthole, quiet
Piling anchor pole 15 straight up, is inserted into the bolthole of 13 bottom of reaction frame pedestal, and bolt or directly welding is used to carry out anchor
Gu.The column portion of the top connection vertical supporting 111 of reaction frame pedestal 13, the bottom of column portion passes through height adjusting structure
14 height are adjustably connected on reaction frame pedestal 13, which may include being opened in instead along short transverse interval
Multiple rows of first hole body on power frame pedestal 13, multiple rows of second hole body that column portion bottom is opened in along short transverse interval and
For connecting the bolt connection piece of the first hole body aligned and the second hole body.The main frame body of reaction frame is in " door " font, both sides
Column portion be fixed on lower section reaction frame pedestal 13 on, the cross-brace 111 of top is fixed on both sides by bolt 12
Between column portion, many places pin hole is set in column portion upper edge short transverse, so that different story heights use.Jack
19 use hydraulic jack, which is fixedly mounted on the bottom of the cross-brace 11 of pressure pile reaction frame 10, jack
The pile cutoff of the steel pipe column pair of 19 lower end aligned ground to be pressed into.
3rd, pile cutoff stake holes in place is lifted by crane：
Pile pile transport will carry out pile pile binding work according to means of transport, and pile pile stacking does not allow beyond two layers, and carry out
Bottom pile pile puts branch and advance expenditure work, and being tumbled to prevent pile pile influences pile pile quality or generation safety accident.
4th, piling：
Pile cutoff can carry out piling in place and after examining correctly, and pile cutoff must keep vertical, make jack and pile cutoff in place
Axis is maintained on same vertical line, must not deflection.In piling, stake top should pad the gunnysack of 2cm~3cm thickness and the steel of 2cm thickness
Plate, construction period, the dead weight that pile driving pressure must not exceed bottom plate and upper floors structure can bear, to prevent bottom plate and upper floor
Layer structure damages, and pressing pile construction must not stop over, and answer one-time-reach-place, if it is necessary to which when stopping over, pile top should stop
In Soft Soil Layer, and idle hours, no more than 24 hours, the control standard of pressing pile construction should be to design based on final stake power, stake
Embedded depth about 10m (passing through layer of sand) is controlled, and control standard final pressure is bearing capacity of single pile, and voltage stabilizing 30 minutes settles
Amount can whole stake less than 2mm.
5th, the pressure gauge reading of steel-pipe pile embedded depth is recorded：
The pressure for reading steel-pipe pile using instrument is read and being pressed into ground, to judge the compression distance of steel-pipe pile.Read instrument
On pressure gauge reading, whether control design drawing requirement meet, and envelope stake processing can be carried out by such as meeting the requirements, be unsatisfactory for just into
The piling again of row next step pile extension.
6th, pile extension：
Coordinate shown in Fig. 9, using 8 pile extension of casing joint, it is necessary to two sections pile cutoff 3 be made to be connect completely in casing joint 8
It touches, must weld full between casing joint 8 and pile cutoff 3, when pile extension must be layered casing joint 8 and the cuff of pile cutoff 3 equably
The weld seam of position butt welding fills up, and to accelerate speed of application, reduces the pile extension time, 2 welders welding simultaneously can be set, after the completion of welding
It should rest 4~5 minutes, piling can be carried out after being cooled down at welderings by waiting, so Yi Shang three-procedure repeatedly, until stake embedded depth pressure
Power meter reading, which meets, can carry out last procedure after Design Requirement Drawing and receive stake (design requirement is not achieved in pile cutoff in this process
When just need)；
7th, stake is filled：
Coordinate shown in Fig. 2, Fig. 6~8, after the pile sinking of steel-pipe pile to be done, in removing pressure pile reaction in static pressure pile anchor rod 15
Anchor rib 16 at the top of static pressure pile anchor rod 15 and steel-pipe pile using contact muscle 17 is linked together, carries out Stake head handling by frame.
Before welding static pressure pile anchor rod 15 and the connection of anchor rib 16 using contact muscle 17, first by static pressure pile anchor rod 15 and the top of anchor rib 16
Portion is bent, and the bending part of static pressure pile anchor rod 15 and anchor rib 16 is made to be located at the interior location in piling hole, then use connection
It is muscle 17 to the bending part of static pressure pile anchor rod 15 and anchor rib 16 into joining line.Further, relative to the hole heart in piling hole
Surrounding in piling hole is symmetrically distributed with even number root static pressure pile anchor rod 15, is in the present embodiment 4 static pressure pile anchor rods 15,4
Static pressure pile anchor rod 15 is symmetrical two-by-two, also, contacts muscle using same root between one group of symmetrical static pressure pile anchor rod 15
17 link together, and two contact muscle 17 static pressure pile anchor rod 15 arranged in a crossed manner for being welded to connect both sides and anchor rib 16 play solid
Determine the effect at the top of steel-pipe pile.
After the top fixation of steel-pipe pile, start to pour into a mould concrete to the inside of steel-pipe pile, carry out slip casting.Due to steel
The part pile cutoff 3 of pile pile offers injected hole 7 and outside is coated with slip casting cuff 9, when to the inside of steel-pipe pile pour into a mould concrete
When, concrete is understood the injected hole 7 opened up on permeation parts pile cutoff 3 and is entered in slip casting cuff 9, and slip casting cuff 9 is constraint shape
Elastic cuff, slip casting cuff 9 struts and formed and expand pile body position 4 by concrete, enhancing pile body and surrounding soil bond stress.
Therefore steel-pipe pile single pile resistance to plucking (resistance to compression) bearing capacity after slip casting enhances.
Wherein, in the present embodiment, the part pile cutoff 3 for offering injected hole 7 is located at the section stake of bottom end two of steel-pipe pile
Section, and this often saves and is uniformly provided with 4 injected holes 7 in 3 upper edge stake week of pile cutoff, this often saves the note at 3 upper edge of pile cutoff setting up and down two
Starch hole 7.Slip casting cuff 9 is coated on the outside of injected hole 7, and often section pile cutoff 3 sets the slip casting cuff 9, as shown in fig. 6,
The both ends open of the slip casting cuff 9 and seamless outer wall for being socketed on corresponding pile cutoff 3, the middle part of slip casting cuff 9 are arc-shaped after slip casting
In the soil layer for blasting ground 6 outward.
8th, stake is sealed：
Coordinate shown in Fig. 2, Fig. 7 and Fig. 8, after the completion of steel tube pile grouting, carry out the envelope pile driving construction of steel pipe pile head.It is necessary
It conscientiously carries out, the sundries in the stake holes of steel pipe pile head is cleaned out, is drained the water away, cleaning hole wall is to increase cohesive force, newly
Old interface carries out interface processing (must be stopped when such as underground water water burst is big), using contact muscle 17 15 He of static pressure pile anchor rod
16 interconnection of anchor rib is integrated, and then pours into a mould C30 concretes envelope stake material together with former bottom plate, the full piling hole of envelope stake material filling and
Static pressure pile anchor rod, and consolidated.Preferably, encapsulating compound uses contraction-free grouting concrete, pile crown and sole plate rigid connection group
It closes and forms whole stress.
Grouting steel pipe pile foundation stabilization system and its construction method using the present invention, can be according to the practical geology item of engineering
Part, level of ground water and structure design file carry out strengthening of foundation calculating and checking computations, determine grouting steel pipe pile Design of Reinforcement, ensure
Foundation stabilization effect.The construction method of grouting steel pipe pile reinforcement system of the present invention is easy, and pile sinking uses anchor rod static pressure pile driving construction work
Skill, work surface and working space are smaller, and the basement structure layer to have come into operation can also complete foundation stabilization.Using skill of the present invention
Art, steel pipe pile sinking construction speed is fast, and steel tube pile grouting is easy, main construction appliance include BZ63-6 hydraulic pumps, jack,
Make by oneself pile driving frame, drilling machine of diamond thin-wall, can more complete equipments construct simultaneously, to sole plate destroy it is smaller, easily restore, have both and apply
The characteristics of work is efficient, low cost.
It should be noted that structure, ratio, size depicted in this specification institute accompanying drawings etc., only coordinating
The bright revealed content of book so that those skilled in the art understands and reads, is not limited to the enforceable limit of the present invention
Fixed condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, not
It influences under the effect of present invention can be generated and the purpose that can reach, should all still fall and be obtained in disclosed technology contents
In the range of covering.It is meanwhile cited such as " on ", " under ", "left", "right", " centre " and " one " etc. in this specification
Term is merely convenient to understanding rather than to limit the enforceable range of the present invention, the change of relativeness or tune for narration
It is whole, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the present invention.
The above is only presently preferred embodiments of the present invention, and limitation in any form is not done to the present invention, though
So the present invention is disclosed above with preferred embodiment, however is not limited to the present invention, any technology people for being familiar with this profession
Member, in the range of technical solution of the present invention is not departed from, when the technology contents using the disclosure above make a little change or repair
The equivalent embodiment for equivalent variations is adornd, as long as being the content without departing from technical solution of the present invention, technology according to the present invention is real
Any simple modification, equivalent change and modification that confrontation above example is made still falls within the range of technical solution of the present invention
It is interior.
Claims (10)
- A kind of 1. grouting steel pipe pile foundation stabilization construction method, which is characterized in that including：In the piling hole that steel-pipe pile is set on the bottom plate of building structure, and the embedded static pressure pile anchor rod around the piling hole；In fixing pressure pile reaction frame in the static pressure pile anchor rod, the pressure pile reaction frame includes being connected to the static pressure pile anchor rod Vertical supporting and the cross-brace being installed on the vertical supporting；By the use of the pressure pile reaction frame the cross-brace as jack top support top, the jack bottom branch supports In the pile cutoff of steel-pipe pile, the ground that the pile cutoff of steel-pipe pile is pressed into out of described piling hole paragraph by paragraph below bottom plate carries out steel-pipe pile Pile sinking, the lower end closed of the steel-pipe pile, the upper end of the steel-pipe pile is connected with anchor rib, the part pile cutoff of the steel-pipe pile It offers injected hole and outside is coated with slip casting cuff；After the pile sinking of the steel-pipe pile to be done, in removing the pressure pile reaction frame in the static pressure pile anchor rod, using contact muscle The static pressure pile anchor rod and the anchor rib are linked together；Slip casting is carried out to the inside of the steel-pipe pile, slurries are while the inside for filling the steel-pipe pile, permeation parts pile cutoff On the injected hole that opens up enter in the slip casting cuff, the slip casting cuff is softened and is formed and expand pile body position； AndAfter the slip casting of the steel-pipe pile to be done, envelope stake material is filled up in the piling hole, carries out envelope stake, and by the static pressed pile Anchor pole, the anchor rib and the contact muscle are embedded in envelope stake material.
- 2. grouting steel pipe pile foundation stabilization construction method as described in claim 1, it is characterised in that：Offer the injected hole Part pile cutoff be located at the bottom position of the steel-pipe pile.
- 3. grouting steel pipe pile foundation stabilization construction method as claimed in claim 2, it is characterised in that：Offer the injected hole Part pile cutoff be located at the steel-pipe pile bottom end two save pile cutoff, often save be uniformly provided in the pile cutoff upper edge stake week it is multiple The injected hole.
- 4. grouting steel pipe pile foundation stabilization construction method as claimed in claim 3, it is characterised in that：The two of the slip casting cuff End opening and the seamless outer wall for being socketed on corresponding pile cutoff, the middle part of the slip casting cuff after slip casting it is arc-shaped blast outward it is described In ground.
- 5. grouting steel pipe pile foundation stabilization construction method as described in claim 1, it is characterised in that：Contact muscle is being used by institute State static pressure pile anchor rod and the step of the anchor rib links together before, first by the static pressure pile anchor rod and the anchor rib Top is bent, and the bending part of the static pressure pile anchor rod and anchor rib is made to be located at the interior location in the piling hole, then Using the contact muscle to the bending part of the static pressure pile anchor rod and the anchor rib into joining line.
- 6. grouting steel pipe pile foundation stabilization construction method as claimed in claim 5, it is characterised in that：Relative to the piling hole Surrounding of the hole heart in the piling hole be symmetrically distributed with static pressure pile anchor rod described in even number root, also, one group of symmetrical institute It states and is linked together using the same contact muscle between static pressure pile anchor rod.
- 7. grouting steel pipe pile foundation stabilization construction method as claimed in claim 6, it is characterised in that：The piling hole, which has, to be supplied The relatively narrow hole portion of the pile cutoff press-in of the steel pipe column and the wider bore portion for burying the static pressure pile anchor rod, the relatively narrow hole portion The lower part in the wider bore portion is set on the hole heart.
- 8. grouting steel pipe pile foundation stabilization construction method as described in claim 1, it is characterised in that：The steel-pipe pile has more Duan Suoshu pile cutofves, and be attached between the pile cutoff using casing joint.
- 9. grouting steel pipe pile foundation stabilization construction method as described in claim 1, it is characterised in that：The encapsulating compound uses nothing Shrinkage grouting filler.
- 10. a kind of grouting steel pipe pile foundation stabilization system, it is characterised in that：Including the piling being opened on the bottom plate of building structure Hole and the static pressure pile anchor rod being embedded in the piling hole, the pile cutoff of steel-pipe pile enter from the piling pore pressure below the bottom plate In ground, the lower end closed of the steel-pipe pile, the upper end of the steel-pipe pile is connected with anchor rib, the anchor rib and the static pressure Pile anchor rod is linked together by contacting muscle；The part pile cutoff of the steel-pipe pile offers injected hole and outside is coated with slip casting bag It covers, the note is entered filled with the injected hole opened up on slurries and the slurries permeation parts pile cutoff in the steel-pipe pile It starches in cuff, by the slip casting bag casing brace open form into pile body position is expanded, envelope stake material, the static pressure is filled in the piling hole Pile anchor rod, the anchor rib and the contact muscle are embedded in envelope stake material.
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| CN201810200374.6A CN108265718A (en) | 2018-03-12 | 2018-03-12 | Grouting steel pipe pile foundation stabilization system and its construction method |
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| CN201810200374.6A CN108265718A (en) | 2018-03-12 | 2018-03-12 | Grouting steel pipe pile foundation stabilization system and its construction method |
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| CN201810200374.6A Pending CN108265718A (en) | 2018-03-12 | 2018-03-12 | Grouting steel pipe pile foundation stabilization system and its construction method |
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Cited By (9)
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|---|---|---|---|---|
| CN108894217A (en) * | 2018-07-17 | 2018-11-27 | 金陵科技学院 | A kind of variable diameters stake and its construction method |
| CN109056747A (en) * | 2018-10-17 | 2018-12-21 | 石磊 | A kind of efficient mini steel-pipe pile constructing structure, method |
| CN110835924A (en) * | 2018-08-16 | 2020-02-25 | 云南华坤装配式建筑有限公司 | Thin-wall light steel structure steel pile grouting raft composite foundation technology |
| CN110835926A (en) * | 2018-08-16 | 2020-02-25 | 云南华坤装配式建筑有限公司 | Thin-wall light steel structure steel pile strip foundation composite foundation technology |
| CN113338362A (en) * | 2021-06-03 | 2021-09-03 | 杭州圣基建筑特种工程有限公司 | Construction method of cage core bag bottom-expanding grouting anchor rod static pressure steel pipe pile |
| CN113789784A (en) * | 2021-10-11 | 2021-12-14 | 上海建工四建集团有限公司 | Low-clearance anchor rod static-pressure pile machine and construction method thereof |
| CN114960635A (en) * | 2022-06-09 | 2022-08-30 | 中交第二航务工程勘察设计院有限公司 | Implanted steel pipe pile self-anchoring structure and construction method thereof |
| CN115478560A (en) * | 2022-09-28 | 2022-12-16 | 苏州枫石堂工程科技有限公司 | Wall cracking grouting reinforcement method |
| CN116122271A (en) * | 2023-02-03 | 2023-05-16 | 江苏泰康工程咨询监理有限公司 | Intelligent self-balancing compound grouting device and method for steel pipe pile based on Internet of things technology |
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| CN108894217A (en) * | 2018-07-17 | 2018-11-27 | 金陵科技学院 | A kind of variable diameters stake and its construction method |
| CN110835924A (en) * | 2018-08-16 | 2020-02-25 | 云南华坤装配式建筑有限公司 | Thin-wall light steel structure steel pile grouting raft composite foundation technology |
| CN110835926A (en) * | 2018-08-16 | 2020-02-25 | 云南华坤装配式建筑有限公司 | Thin-wall light steel structure steel pile strip foundation composite foundation technology |
| CN109056747A (en) * | 2018-10-17 | 2018-12-21 | 石磊 | A kind of efficient mini steel-pipe pile constructing structure, method |
| CN113338362A (en) * | 2021-06-03 | 2021-09-03 | 杭州圣基建筑特种工程有限公司 | Construction method of cage core bag bottom-expanding grouting anchor rod static pressure steel pipe pile |
| CN113789784A (en) * | 2021-10-11 | 2021-12-14 | 上海建工四建集团有限公司 | Low-clearance anchor rod static-pressure pile machine and construction method thereof |
| CN113789784B (en) * | 2021-10-11 | 2023-02-14 | 上海建工四建集团有限公司 | Low-clearance anchor rod static-pressure pile machine and construction method thereof |
| CN114960635A (en) * | 2022-06-09 | 2022-08-30 | 中交第二航务工程勘察设计院有限公司 | Implanted steel pipe pile self-anchoring structure and construction method thereof |
| CN115478560A (en) * | 2022-09-28 | 2022-12-16 | 苏州枫石堂工程科技有限公司 | Wall cracking grouting reinforcement method |
| CN116122271A (en) * | 2023-02-03 | 2023-05-16 | 江苏泰康工程咨询监理有限公司 | Intelligent self-balancing compound grouting device and method for steel pipe pile based on Internet of things technology |
| CN116122271B (en) * | 2023-02-03 | 2023-10-10 | 江苏泰康工程咨询监理有限公司 | Intelligent self-balancing compound grouting device and method for steel pipe pile based on Internet of things technology |
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