CN108643192A - Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method - Google Patents
Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method Download PDFInfo
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- CN108643192A CN108643192A CN201810468093.9A CN201810468093A CN108643192A CN 108643192 A CN108643192 A CN 108643192A CN 201810468093 A CN201810468093 A CN 201810468093A CN 108643192 A CN108643192 A CN 108643192A
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- Prior art keywords
- column
- steel
- steel pipe
- reinforcement cage
- pipe column
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- 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
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
Abstract
The present invention relates to the technical fields of Brace in Deep Footing Groove supporting ultralong steel tube column pile driving construction, disclose Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method, include the following steps：(1) rotary digging forms column stake holes；(2) steel reinforcement cage is put into stake holes, is fixed at aperture at the top of steel reinforcement cage；(3) lower end of steel pipe column is inserted into steel reinforcement cage, steel pipe column is welded and fixed with steel reinforcement cage；(4) in steel reinforcement cage top position only pulpboard is welded with around steel pipe column；(5) steel reinforcement cage and steel pipe column are transferred to stake holes, aperture will be fixed at the top of steel pipe column；(6) steel reinforcement cage and steel pipe column are put into completely in column stake holes, complete lifting, to carrying out filling concrete in steel reinforcement cage, then to carrying out filling concrete in steel pipe column, stand column pile is formd after concrete setting；Provide a kind of green, safe and efficient Brace in Deep Footing Groove supporting tubular steel post pile driving construction field joint, installation, in steel pipe post casting concrete pile construction method.
Description
Technical field
The present invention relates to the technical fields of Brace in Deep Footing Groove supporting ultralong steel tube column pile driving construction, especially Brace in Deep Footing Groove
Supporting ultralong steel tube column pile construction method.
Background technology
When deep basal pit using support support form when, most of stand column pile of support construction be supporting steel pipe column or
Reinforced concrete upright column.Concrete filled steel tube staking out compared with reinforced concrete upright column stake, have easy for construction, shock resistance it is strong,
The advantages such as overall cost is low, it is convenient and reusable in supporting removal, meet green construction requirement.
In mega project practice of construction, the length of steel pipe column is often very long, is ultralong steel tube column, is required in work progress
Steel pipe stanchion heart deviation is small, and verticality is smaller, to meet construction quality requirement.
In order to reach the design requirement of steel pipe post stake, making, the scene of ultralong steel tube column should be solved in practice of construction
Splicing, precisely the critical processes operational issue such as lifting, degree control, pouring concrete within steel pipe.
In the prior art, a kind of green of shortage, safe and efficient Brace in Deep Footing Groove supporting tubular steel post pile driving construction scene are right
Connect, install, in steel pipe post casting concrete pile construction method.
Invention content
The purpose of the present invention is to provide Brace in Deep Footing Groove supporting ultralong steel tube column pile construction methods, it is intended to solve existing
The problem of lacking a kind of efficient Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method in technology.
The invention is realized in this way Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method, the stand column pile packet
Include bored concrete pile part and the top positioned at the bored concrete pile part and the steel tube concrete pile that is connect with the bored concrete pile part
Part, the construction method include the following steps：
(1), using Spiral digging machine column stake holes is formed in designated position rotary digging；
(2), the reinforcing bar cage hoisting finished will be made to be put into the column stake holes, the top of the steel reinforcement cage is temporarily solid
It is scheduled at the aperture of the column stake holes；
(3), the steel pipe column finished will be made to lift to the aperture of the column stake holes, by the lower end of the steel pipe column
Be inserted into the steel reinforcement cage, and at this point, the upper-end part of driving of the steel pipe column in the top of the steel reinforcement cage, by the steel pipe column with
The steel reinforcement cage is welded and fixed；
(4), the only pulpboard overflowed for stopping concrete grout, the only pulpboard are welded in the steel reinforcement cage top position
It is arranged around the periphery of the steel pipe column；
(5), after the completion of the only pulpboard welding, the steel reinforcement cage being integrated will be welded and fixed and continued toward institute with steel pipe column
Decentralization in column stake holes is stated, and will be temporarily fixed at the top of the steel pipe column at the aperture of the column stake holes；
(6), the steel reinforcement cage being integrated will be welded and fixed and steel pipe column carries out installation positioning and will be welded after installation positioning
It connects the steel reinforcement cage being fixed as one to be put into completely with steel pipe column in the column stake holes, completes lifting；First toward the column
Concrete perfusion in steel reinforcement cage in stake holes, then the concrete perfusion in the steel pipe column in the column stake holes, the steel reinforcement cage
The bored concrete pile part of the stand column pile is formed after interior concrete setting, after the concrete setting in the steel pipe column described in formation
The steel tube concrete pile part of stand column pile.
Further, in step (3), the periphery of the steel pipe column is disposed with multigroup dowel group, multigroup connection
For muscle group along the axially-spaced arrangement of the steel pipe column, the dowel group includes the more peripheries for being looped around the steel pipe column
Dowel welds the dowel with the steel reinforcement cage with steel pipe column respectively, realizes that the steel pipe column is welded with the steel reinforcement cage
Connect fixation.
Further, the only pulpboard be provided with it is multiple for gush by and prevent on mud concrete coarse aggregate by it is logical
Hole.
Further, in step (2), the steel reinforcement cage finished is made by the sub- fixed shape of steel reinforcement cage section docking of multistage
At docking fixing means is：One section of sub- steel reinforcement cage section is lifted to the column stake holes, by the cross-talk steel reinforcement cage section
Top is temporarily fixed at the aperture of the column stake holes, and the next section of sub- steel reinforcement cage section is lifted to the column stake holes
At aperture, by two sections of sub- steel reinforcement cage sections, vertically fixed docking, the entirety formed after docking continue in the column stake holes
Decentralization, and will be temporarily fixed at the aperture of the column stake holes at the top of the next section of sub- steel reinforcement cage section；Sequentially operate with
Upper step, until the sub- steel reinforcement cage section docking of the multistage for completing entire steel reinforcement cage.
Further, it in step (3), makes the steel pipe column finished and is docked by more steel-pipe weldings and formed, more
Steel pipe docking on splicing platform forms the steel pipe column；The splicing platform includes the support of the spaced and parallel arrangement of multiple tracks
Frame, the steel pipe are placed on perpendicular to the extending direction of support frame as described above on multiple tracks support frame as described above, the both ends of support frame as described above
It is provided with the baffle for preventing roller from tumbling.
Further, it is 2 that the welding between the more steel pipes, which uses carbon-dioxide arc welding welding manner, weld seam grade,
Grade, the weld seam carry out anticorrosion with painting processing.
Further, in step (1), the down-set shield for being useful for preventing collapse hole at the aperture of the column stake holes
Cylinder.
Further, in step (6), the peripheral ring on the steel pipe column top around more bendings spacer bar, it is more
A spacer bar is welded with the periphery of the steel pipe column respectively, and the spacer bar is connected to the inner wall of the casing, real
The positioning of the steel reinforcement cage and steel pipe column that are now fixed as one.
Further, joint bar is welded at the top of the steel pipe column, the joint bar makes the top and first of the stand column pile
Road supporting beam connection.
Further, it is connected with hangs muscle lifting lug at the top of the steel pipe column, the hangs muscle lifting lug includes lifting lug and along institute
The hangs muscle that the length direction of lifting lug extends downwardly is stated, the hangs muscle welds the steel pipe column, and the lifting lug is hollow to form rectangular lead to
Hole when the rod is placed on the casing, realizes the interim solid of the steel pipe column when the rod insertion square through hole
It is fixed.
Compared with prior art, Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method provided by the invention, provides
A kind of green, installation, is poured in steel pipe post safe and efficient Brace in Deep Footing Groove supporting tubular steel post pile driving construction field joint
The construction method for building concrete pile, solve ultralong steel tube column making, scene splicing, precisely lifting, degree control,
The operational issue of the critical processes such as pouring concrete within steel pipe improves the pile quality of stand column pile, meets quality requirement, improves
Construction efficiency.
Description of the drawings
Fig. 1 is the construction process of Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method provided in an embodiment of the present invention
Schematic diagram；
Fig. 2 is that schematic diagram is fixed in the docking of steel reinforcement cage and steel pipe column provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the steel reinforcement cage being welded and fixed and erection of steel pipe column positioning provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of the steel reinforcement cage being welded and fixed and steel pipe column rigging out provided in an embodiment of the present invention；
Fig. 5 is concrete perfusion schematic diagram in steel reinforcement cage provided in an embodiment of the present invention；
Fig. 6 is concrete perfusion schematic diagram in steel pipe column provided in an embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The same or similar label correspond to the same or similar components in the attached drawing of the present embodiment；In description of the invention
In, it is to be understood that if there is the orientation or positional relationship of the instructions such as term "upper", "lower", "left", "right" for based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated dress
It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore the use of position relationship described in attached drawing
Language only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term is understood as the case may be.
The realization of the present invention is described in detail below in conjunction with specific embodiment.
Referring to Fig.1 shown in -6, preferred embodiment is provided for the present invention.
Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method provided in this embodiment, for solving in the prior art
The problem of lacking a kind of efficient Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method.
200 construction method of Brace in Deep Footing Groove supporting ultralong steel tube stand column pile, stand column pile 200 include bored concrete pile part 210 with
And the top positioned at bored concrete pile part 210 and the steel tube concrete pile part 220 that is connect with bored concrete pile part 210, construction method
Include the following steps：
(1), using Spiral digging machine 200 hole 100 of stand column pile is formed in designated position rotary digging；
(2), the lifting of steel reinforcement cage 110 finished will be made to be put into 200 hole 100 of stand column pile, the top of steel reinforcement cage 110 is faced
When be fixed at the aperture in 200 hole 100 of stand column pile；
(3), it will make at the lifting to the aperture in 200 hole 100 of stand column pile of steel pipe column 120 finished, it will be under steel pipe column 120
End is inserted into steel reinforcement cage 110, and at this point, the upper-end part of driving of steel pipe column 120 in the top of steel reinforcement cage 110, by steel pipe column 120 with
Steel reinforcement cage 110 is welded and fixed；
(4), the only pulpboard 130 overflowed for stopping concrete grout is welded in 110 top position of steel reinforcement cage, only pulpboard
130 around the periphery of steel pipe column 120 arrangement；
(5), stop pulpboard 130 weld after the completion of, will be welded and fixed the steel reinforcement cage 110 being integrated continued with steel pipe column 120 it is past
Decentralization in 200 hole 100 of stand column pile, and the top of steel pipe column 120 is temporarily fixed at the aperture in 200 hole 100 of stand column pile；
(6), the steel reinforcement cage 110 being integrated will be welded and fixed and steel pipe column 120 carries out installation positioning, it, will after installation positioning
It is welded and fixed the steel reinforcement cage 110 being integrated to be put into completely in 200 hole 100 of stand column pile with steel pipe column 120, completes lifting；First toward vertical
Concrete perfusion in steel reinforcement cage 110 in 200 hole 100 of stanchion, then the interior perfusion of steel pipe column 120 in 200 hole 100 of stand column pile are mixed
It is solidifying native, the bored concrete pile part 210 of stand column pile 200, the coagulation in steel pipe column 120 are formed after the concrete setting in steel reinforcement cage 110
The steel tube concrete pile part 220 of stand column pile 200 is formed after soil solidification.
200 construction method of Brace in Deep Footing Groove supporting ultralong steel tube stand column pile of above-mentioned offer provides a kind of green, peace
Entirely, efficient Brace in Deep Footing Groove supporting tubular steel post pile driving construction field joint, installation, casting concrete pile in steel pipe post
Construction method, solve the making of ultralong steel tube column, scene splicing, precisely lifting, degree control, coagulation is perfused in steel pipe
The operational issue of the critical processes such as soil improves the pile quality of stand column pile 200200, meets quality requirement, improves construction effect
Rate.
Specifically, in step (3), the periphery of steel pipe column 120 is disposed with 140 groups of multigroup dowel, multigroup dowel 140
For group along the axially-spaced arrangement of steel pipe column 120,140 groups of dowel includes the connection of the more peripheries for being looped around steel pipe column 120
Muscle 140 welds dowel 140 with steel reinforcement cage 110 with steel pipe column 120 respectively, realizes that steel pipe column 120 is welded with steel reinforcement cage 110
It is fixed.
Furthermore only pulpboard 130 be provided with it is multiple for gushed on mud by and prevent concrete coarse aggregate by through-hole.
In the present embodiment, in step (2), makes the steel reinforcement cage 110 finished and fixed by the 110 sections of docking of the sub- steel reinforcement cage of multistage
It is formed, docking fixing means is：One cross-talk steel reinforcement cage is lifted to 200 holes 100 of stand column pile for 110 sections, by the cross-talk steel reinforcement cage
110 sections of top is temporarily fixed at the aperture in 200 hole 100 of stand column pile, by 110 sections of liftings of next cross-talk steel reinforcement cage to stand column pile
At the aperture in 200 holes 100, by two cross-talk steel reinforcement cages, 110 sections of vertical fixed docking, the entirety formed after docking continues toward stand column pile
Decentralization in 200 holes 100, and the top of 110 sections of next cross-talk steel reinforcement cage is temporarily fixed at the aperture in 200 hole 100 of stand column pile；
Above step is sequentially operated, until completing 110 sections of docking of the sub- steel reinforcement cage of multistage of entire steel reinforcement cage 110.
It in step (3), makes the steel pipe column 120 finished and is docked by more steel-pipe weldings and formed, more steel pipes are splicing
Docking forms steel pipe column 120 on platform；Splicing platform includes the supporting rack of the spaced and parallel arrangement of multiple tracks, and steel pipe is perpendicular to supporting rack
Extending direction be placed on multiple tracks supporting rack, the baffle of supporting rack being provided at both ends with for preventing roller from tumbling.
Specifically, it is 2 grades that the welding between more steel pipes, which uses carbon-dioxide arc welding welding manner, weld seam grade, weldering
Seam carries out anticorrosion with painting processing.
It is down-set at the aperture in 200 hole 100 of stand column pile to be useful for preventing collapse hole in step (1) in the present embodiment
Casing 150.
In step (6), the peripheral ring on 120 top of steel pipe column is around the spacer bar 160 of more bendings, multiple positioning steel
Muscle 160 is welded with the periphery of steel pipe column 120 respectively, and spacer bar 160 is connected to the inner wall of casing 150, and realization is fixed as one
Steel reinforcement cage 110 and steel pipe column 120 positioning.
Furthermore the top of steel pipe column 120 is welded with joint bar 170, and joint bar 170 makes the top of stand column pile 200 and first
Support beam connection.
The top of steel pipe column 120 is connected with 180 lifting lug 190 of hangs muscle, and 180 lifting lug 190 of hangs muscle includes that lifting lug 190 and edge are hung
The hangs muscle 180 that the length direction of ear 190 extends downwardly, 180 welded still pipe column 120 of hangs muscle, lifting lug 190 is hollow to form rectangular lead to
Hole when rod is placed on casing 150, realizes being fixed temporarily for steel pipe column 120 when rod insertion square through hole.
In the past for extra large comprehensive transportation hub project：
In preceding extra large comprehensive transportation hub project, the structure design basement number of plies is 6 layers, and excavation of foundation pit depth reaches 31.7m,
Foundation Pit Support Design uses+6 road concrete support of diaphram wall, support post that foundation pit bottom or less is used to be perfused for φ 1.6m
φ 0.9m steel core concrete columns more than stake, foundation pit bottom to be inserted into bored concrete pile.
This project steel pipe column 120 length about 31.45m, weighs about 20t, is ultralong steel tube column, design requirement column is in per pass
Position deviation ± the 20mm of reservation member, 120 heart deviation ± 50mm of steel pipe column, verticality is supported to be not more than 0.5%.
This project construction technology process is as follows：
1,200 spiral-digging pore of stand column pile
200 pore-forming of this project stand column pile uses Spiral digging machine pore-forming.Since the design function of this project stand column pile 200 is resistance to compression
And resistance to plucking, 200 hole of stand column pile, 100 depth 70m, enter middle differentiation sial 3m, bottom hole sediment thickness is≤50mm, verticality requirement
Height, bottom hole slagging thickness requirement is high, and difficulty of construction is big.
In order to solve the above problem, pore-forming is carried out using precious high BG46 types Spiral digging machine, which reaches
111.2m, power head peak torque are 460KN/M, and precision is high, and construction efficiency is high, ensures its hole quality.
This project place is in reclaimation area, complex geologic conditions, and 3m below earth's surface is 8~10m thick mud layers, under mud
For 3~5m thick sand beds, to ensure that 200 hole quality of stand column pile, aperture place the steel pile casting 150 of diameter phi 1.8m, long 18m.At
Hole is crept into using rotary digging, is constructed to middle weathered granite face, then using " major diameter rotary digging bored concrete pile hard rock is classified reaming engineering method "
(provincial engineering method GDGF091-2014) is improved into 200 hole of stand column pile, 100 efficiency；Secondary pile hole cleaning is using " rotary digging bored concrete pile is without mud
Circulation secondary borehole cleaning engineering method " (provincial engineering method GDGF091-2014) enters the next step after qualified.
2,110 aperture of steel reinforcement cage lifts
(1) steel reinforcement cage 110 makes
Since 200 hole 100 of stand column pile is as deep as 70m, 200 foundation pit bottom steel reinforcement cage of stand column pile, 110 length about 40m, design requirement
110 cage main reinforcement of steel reinforcement cage be 36C25, cover to reinforcement thickness 70mm, 110 overall weight of steel reinforcement cage reach 6.5t.
Since the length of steel reinforcement cage 110, weight are big, to prevent steel reinforcement cage 110 from deforming in making, transport, hoisting process, this item
Mesh is docked per segment length about 20m in aperture during practice of construction, using sectional making steel reinforcement cage 110.
(2) 110 aperture of steel reinforcement cage lifts
Steel reinforcement cage 110 makes, after the completion of stake holes, is segmented and is lifted by crane to steel reinforcement cage 110 using 80t crawler cranes, in hole
Mouth welding spreading, the verticality and pile position deviation for ensuring steel reinforcement cage 110 using protective layer reach design requirement, steel reinforcement cage 110
It is put into stake holes (the long L-3 of stake) m, is fixed on aperture.
3, steel pipe column 120 lifts by crane
(1) 120 processing and fabricating of steel pipe column
200 steel pipe of stand column pile requires precisely with supporting beam connecting joint structure complexity, docking location, including tension steel plate,
The built-in fittings such as anti-shear steel plate, steel corbel.
Due to 120 long 31.45m of finished steel tubing string, it is unfavorable for transporting, by special Gang Gou factories according to design requirement point two
Section makes.
(2) the interior homogeneous tube splicing of steel pipe column 120
It needs to carry out homogeneous tube splicing after the transport to construction site of steel pipe column 120.To ensure field joint quality, at the construction field (site)
Process special column steel pipe splicing platform.
Splicing platform is integrally made of 6 supporting racks, and it is true to regard steel pipe embedded part design requirement for spacing between per pass supporting rack
Fixed, supporting rack can be accommodated 2 steel pipe columns 120 and be rolled work on platform by I-steel processing and fabricating, the wide 6m of per pass supporting rack
Industry facilitates site welding, avoids welding in the overhead position, and improves working efficiency and welding quality.Every one of supporting rack absolute altitude is consistent, side board
It is on same vertical plane and vertical with platform level, it is whole to carry out steel pipe column 120 using the vertical method in two points one lines, section
Splicing ensures that two sections of steel pipe central axis are on same line when steel pipe column 120 docks, is integrally hung down with reaching after column steel pipe docks
Straight degree meets the standard of design requirement.
The splicing of 120 homogeneous tube of steel pipe column is hung to platform by first segment steel pipe column 120 is flat using crawler crane, is close to side
Baffle and fixation recycle crawler crane, and second segment steel pipe column 120 is close to platform side baffle by auxiliary manpower, and makes two
Section steel pipe column 120 splices tight-lipped patch, then fixes；After the completion of alignment, to be welded using carbon-dioxide arc welding, weld seam grade is 2 grades,
Weld seam is done into anticorrosion with painting processing after qualification to be detected.
(3) steel pipe column 120 lifts by crane
To ensure its lifting safety, using hanging based on 130t crawler cranes, 80t crawler cranes hang for pair, major-minor double-machine lifting crane
Method, in the air it is complete it is in 90 ° turn round, after by it is main hang hang vertically it is vertical.
4, steel pipe column 120 is fixed with 110 aperture of steel reinforcement cage
(1) steel pipe column 120 lifts in place
Steel pipe column 120 is hung to orifice position, steel pipe column 120 is inserted into 110 projected depth of steel reinforcement cage by design requirement
3.5m starts the welding of steel pipe column 120 and steel reinforcement cage 110.
(2) steel pipe column 120 is fixed with steel reinforcement cage 110
After steel reinforcement cage 110 is inserted into steel perfusion, it is welded to connect muscle 140 in inserting paragraph, keeps steel pipe column 120 solid with steel reinforcement cage 110
It is fixed.Dowel 140 is arranged twice altogether, spacing 2m, and per pass is by being welded on the connection steel of 120 conplane four direction of steel pipe column
Muscle forms, and connection rebar sizes are steel pipe column 120 and 110 spacing of steel reinforcement cage.
(3) stop the installation of pulpboard 130
After the completion of steel pipe column 120 is fixed with steel reinforcement cage 110, in 110 top position of steel reinforcement cage, welding one stops pulpboard 130
(the thick ring-like steel plates of 4mm), only reserves certain amount, it is thick both to have can effectively prevent concrete for the circular hole of a diameter of 25mm on pulpboard 130
Aggregate passes through, but can facilitate mud on gush, cause streaming for concrete when avoiding pouring concrete and generate the waste of concrete.
Reinforcing bar continues to transfer steel pipe column 120 after the completion of stopping the welding of pulpboard 130, and steel pipe column 120 is transferred to hole completely, and is faced
When be fixed on aperture.
5, steel pipe column 120 and 110 integral installation of steel reinforcement cage and positioning
The whole positioning of steel pipe column 120 and steel reinforcement cage 110 mainly by 120 top setting spacer bar 160 of steel pipe column, in advance
The joint bar 170 of making, improve after hangs muscle 180 solve.
(1) spacer bar 160 is set
According to the repetition measurement to 120 positions of steel pipe column as a result, making spacer bar 160；In the 120 top positions 0.5m of steel pipe column
Four direction weld spacer bar 160, come the plan-position that steel pipe column 120 is final in control hole.
(2) joint bar 170 is set
For the elevation location of 120 built-in fitting of precise positioning steel pipe column, and make the top of stand column pile 200 and first of supporting beam essence
Quasi- connection, this project are provided with joint bar 170 on the top of steel pipe column 120.
Mark is carried out in a 170 top wherein reinforcing bar of joint bar, tapping top rib portion can measure in steel pipe according to reinforcing bar length
Capital absolute altitude after the completion of the decentralization of column 120.After joint bar 170 is provided with, the next step is carried out.
(3) hangs muscle 180 after setting improvement
It due to traditional 180 lifting lug 190 of hangs muscle, is process using round steel, since 120 weight of steel pipe column reaches 20t, is being hung
During dress, lifting lug 190 is easily deformed, is stretched, and leads to 120 integral sinking of steel pipe column, and it is bad adopt remedial measures, make
At built-in fitting position deviation, so using improved hangs muscle 180, it can ensure 190 integral rigidity of lifting lug, avoid due to lifting lug 190
Deformation causes the deviation of the position vertical direction of built-in fitting.
Hangs muscle 180 calculates length, make after, be welded on the top of steel pipe column 120, crawler crane is hung on lifting lug 190
120 entirety of steel pipe column is put into stake holes by the hole of setting.It is fixed using rod.Absolute altitude repetition measurement is carried out to joint bar 170 again, really
It is accurate to protect steel pipe embedded part elevation location.
6, first time foundation pit bottom cast-in-place pile concrete is perfused
After the completion of steel pipe column 120 and 110 integral installation of steel reinforcement cage and positioning, first to foundation pit bottom bored concrete pile part 210 into
Row filling concrete；When perfusion, 288 tremies 300 of Φ are selected, it is 30mm~50mm above that expects pipe is stretched into stake holes bottom
It sets, using traditional snag filling concrete technology, at filling concrete to the above 1m of stake top absolute altitude.
After the completion of 210 filling concrete of bored concrete pile part, about 1h or so, before waiting for concrete not yet initial set, slump part
After loss, 120 inside points concrete casting of steel pipe column can be carried out.
7, pile is perfused in second of 120 inner concrete of steel pipe column
Perfusion conduit bottom is pulled up to more than 120 bottom of steel pipe column, 2m or so below concrete absolute altitude starts to pour steel
Concrete in tube column；It is acted on due to stopping pulpboard 130 so that high above, the 120 outside concrete of steel pipe column of bored concrete pile top mark is not
It will produce floating.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method, which is characterized in that the stand column pile includes bored concrete pile portion
Point and the top positioned at the bored concrete pile part and the steel tube concrete pile part that is connect with the bored concrete pile part, it is described to apply
Work method includes the following steps：
(1), using Spiral digging machine column stake holes is formed in designated position rotary digging；
(2), the reinforcing bar cage hoisting finished will be made to be put into the column stake holes, will be temporarily fixed at the top of the steel reinforcement cage
At the aperture of the column stake holes；
(3), the steel pipe column finished will be made to lift to the aperture of the column stake holes, the lower end of the steel pipe column is inserted into
In the steel reinforcement cage, and at this point, the upper-end part of driving of the steel pipe column in the top of the steel reinforcement cage, by the steel pipe column with it is described
Steel reinforcement cage is welded and fixed；
(4), the only pulpboard overflowed for stopping concrete grout is welded in the steel reinforcement cage top position, the only pulpboard is surround
The periphery of the steel pipe column is arranged；
(5), after the completion of the only pulpboard welding, the steel reinforcement cage being integrated will be welded and fixed and continued toward described vertical with steel pipe column
It transfers, and will be temporarily fixed at the top of the steel pipe column at the aperture of the column stake holes in stanchion hole；
(6), the steel reinforcement cage being integrated will be welded and fixed and steel pipe column carries out installation positioning, it is after installation positioning, welding is solid
It is set to the integrated steel reinforcement cage to be put into completely with steel pipe column in the column stake holes, completes lifting；First toward the column stake holes
Concrete perfusion in interior steel reinforcement cage, then the concrete perfusion in the steel pipe column in the column stake holes, in the steel reinforcement cage
The bored concrete pile part of the stand column pile is formed after concrete setting, and the column is formed after the concrete setting in the steel pipe column
The steel tube concrete pile part of stake.
2. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method as described in claim 1, which is characterized in that in step
(3) in, the periphery of the steel pipe column is disposed with multigroup dowel group, axial phase of multigroup dowel group along the steel pipe column
Arranged for interval, the dowel group include the dowel of the more peripheries for being looped around the steel pipe column, and the dowel is distinguished
It is welded with steel pipe column with the steel reinforcement cage, realizes that the steel pipe column is welded and fixed with the steel reinforcement cage.
3. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method as claimed in claim 2, which is characterized in that described to stop
Pulpboard be provided with it is multiple for gushed on mud by and prevent concrete coarse aggregate by through-hole.
4. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method as claimed in claim 3, which is characterized in that in step
(2) it in, makes the steel reinforcement cage finished and is formed by the sub- steel reinforcement cage section docking fixation of multistage, docking fixing means is：By one section
The sub- steel reinforcement cage section is lifted to the column stake holes, will be temporarily fixed at the stand column pile at the top of the cross-talk steel reinforcement cage section
At the aperture in hole, the next section of sub- steel reinforcement cage section is lifted to the aperture of the column stake holes, by two sections of sub- reinforcing bars
The vertically fixed docking of cage section, the entirety formed after docking continue to transfer toward in the column stake holes, and by the next section of sub- steel
It is temporarily fixed at the top of muscle cage section at the aperture of the column stake holes；Above step is sequentially operated, until completing entire reinforcing bar
The sub- steel reinforcement cage section docking of multistage of cage.
5. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method as claimed in claim 4, which is characterized in that in step
(3) it in, makes the steel pipe column finished and is docked by more steel-pipe weldings and formed, the more steel pipes dock on splicing platform
Form the steel pipe column；The splicing platform includes the supporting rack of the spaced and parallel arrangement of multiple tracks, and the steel pipe is perpendicular to the branch
The extending direction of support is placed on multiple tracks support frame as described above, and support frame as described above is provided at both ends with for preventing roller from tumbling
Baffle.
6. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method as claimed in claim 5, which is characterized in that more institutes
It is 2 grades to state the welding between steel pipe and use carbon-dioxide arc welding welding manner, weld seam grade, and the weld seam carries out anticorrosion with painting
Processing.
7. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method as claimed in claim 6, which is characterized in that in step
(1) in, the down-set casing for being useful for preventing collapse hole at the aperture of the column stake holes.
8. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method as claimed in claim 7, which is characterized in that in step
(6) in, the peripheral ring on the steel pipe column top around more bendings spacer bar, multiple spacer bars respectively with it is described
The periphery of steel pipe column is welded, and the spacer bar is connected to the inner wall of the casing, realizes the steel reinforcement cage being fixed as one
And the positioning of steel pipe column.
9. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method as claimed in claim 8, which is characterized in that the steel
Joint bar is welded at the top of tubing string, the joint bar makes the top of the stand column pile be connect with first of supporting beam.
10. Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method as described in any one of claims 1-9, feature
It is, hangs muscle lifting lug is connected at the top of the steel pipe column, and the hangs muscle lifting lug includes lifting lug and the length along the lifting lug
The hangs muscle that direction extends downwardly, the hangs muscle weld the steel pipe column, the hollow formation square through hole of lifting lug, when rod is inserted into
The square through hole when rod is placed on the casing, realizes being fixed temporarily for the steel pipe column.
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| CN201810468093.9A CN108643192A (en) | 2018-05-16 | 2018-05-16 | Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method |
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| CN201810468093.9A CN108643192A (en) | 2018-05-16 | 2018-05-16 | Brace in Deep Footing Groove supporting ultralong steel tube column pile construction method |
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| CN109680978A (en) * | 2019-02-15 | 2019-04-26 | 深圳市市政工程总公司 | Basement increasing layer underpinning construction method |
| CN109826190A (en) * | 2019-02-15 | 2019-05-31 | 深圳市市政工程总公司 | The construction method of pile integral structure |
| CN110172977A (en) * | 2019-06-12 | 2019-08-27 | 深圳市工勘岩土集团有限公司 | Foundation pit support steel column grout pile top concrete prevents superfilled construction method and structure |
| CN110629744A (en) * | 2019-09-16 | 2019-12-31 | 中铁广州工程局集团深圳工程有限公司 | Construction process of steel pipe concrete pile of subway station |
| CN112575771A (en) * | 2020-06-15 | 2021-03-30 | 顾炎文 | Green construction method of reverse underground engineering steel concrete pile and column vertical supporting system |
| CN113605377A (en) * | 2021-08-05 | 2021-11-05 | 中铁二局第四工程有限公司 | Rock stratum ultra-deep steel pipe column and uplift pile combined construction process |
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| CN109826190A (en) * | 2019-02-15 | 2019-05-31 | 深圳市市政工程总公司 | The construction method of pile integral structure |
| CN109680978A (en) * | 2019-02-15 | 2019-04-26 | 深圳市市政工程总公司 | Basement increasing layer underpinning construction method |
| CN110172977A (en) * | 2019-06-12 | 2019-08-27 | 深圳市工勘岩土集团有限公司 | Foundation pit support steel column grout pile top concrete prevents superfilled construction method and structure |
| CN110629744A (en) * | 2019-09-16 | 2019-12-31 | 中铁广州工程局集团深圳工程有限公司 | Construction process of steel pipe concrete pile of subway station |
| CN110629744B (en) * | 2019-09-16 | 2021-08-13 | 中铁广州工程局集团深圳工程有限公司 | Construction process of steel pipe concrete pile of subway station |
| CN112575771B (en) * | 2020-06-15 | 2023-08-04 | 顾炎文 | Environment-friendly construction method for vertical support system of reverse-acting underground engineering steel concrete with piles and columns |
| CN112575771A (en) * | 2020-06-15 | 2021-03-30 | 顾炎文 | Green construction method of reverse underground engineering steel concrete pile and column vertical supporting system |
| CN113605377A (en) * | 2021-08-05 | 2021-11-05 | 中铁二局第四工程有限公司 | Rock stratum ultra-deep steel pipe column and uplift pile combined construction process |
| CN113756289B (en) * | 2021-09-02 | 2023-06-02 | 中铁二十局集团第三工程有限公司 | Reinforcing cage and fender pile construction method |
| CN113756289A (en) * | 2021-09-02 | 2021-12-07 | 中铁二十局集团第三工程有限公司 | Steel reinforcement cage and fender pile construction method |
| CN113863365A (en) * | 2021-09-14 | 2021-12-31 | 中交二航局第三工程有限公司 | Novel rectangular steel pipe internally-added reinforced concrete combined supporting column and construction method thereof |
| CN113802767A (en) * | 2021-09-24 | 2021-12-17 | 浙江东南网架股份有限公司 | Steel pipe column construction method by reverse construction method |
| CN113802767B (en) * | 2021-09-24 | 2022-12-20 | 浙江东南网架股份有限公司 | Steel pipe column construction method by reverse construction method |
| CN114592505A (en) * | 2022-02-24 | 2022-06-07 | 深圳市工勘岩土集团有限公司 | Low-clearance foundation pit reverse construction method steel pipe column first-inserting positioning construction method |
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Application publication date: 20181012 |