CN105672314B - A kind of semi-inverse method steel pipe post pile construction method - Google Patents
A kind of semi-inverse method steel pipe post pile construction method Download PDFInfo
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- CN105672314B CN105672314B CN201610035772.8A CN201610035772A CN105672314B CN 105672314 B CN105672314 B CN 105672314B CN 201610035772 A CN201610035772 A CN 201610035772A CN 105672314 B CN105672314 B CN 105672314B
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/06—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers for observation while placing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention discloses a kind of semi-inverse method steel pipe post pile construction method, including following construction procedure：（1）The positioning of stake position；（2）Long shield-tube embedment；（3）Stand column pile pore-forming；（4）Adjustment frame is laid；（5）Steel reinforcement cage is laid；（6）Stand column pile steel pipe splices with tool pipe；（7）Stand column pile steel pipe is laid with tool pipe；（8）Stand column pile steel pipe is finely tuned with tool pipe；（9）Casting and compacting of concrete frame is laid；（10）Stand column pile filling concrete；（11）Tool pipe is pulled out.This engineering method ensure that construction quality, progress and construction safety using the lifting device pipe of wound, a whole set of device that hangs down of surveying independently is ground, and greatly reduce construction cost, the development to half against method is significant.
Description
Technical field
The present invention relates to a kind of semi-inverse method steel pipe post pile construction method, belong to technical field of building construction.
Background technology
With the fast development of domestic city process, the space between the building of Downtown is less and less, building
Construction site is narrow and small, and building and surrounding enviroment are also very sensitive to sedimentation and deformation, now a kind of " contrary sequence method " construction technique
Gradually used and tend to be ripe.Upper strata horizontal support load structure is transmitted in " contrary sequence method " construction, generally using a supporting
The vertical support structure of the single supporting pile of post and bottom, referred to as " one pile for one column ".Construction steel pipe stand column pile（That is one pile for one column）'s
Normal practice is all the pitching pile machine that uses, and the machinery expenses are expensive, domestic machinery limited amount, it is impossible to meet large area volume production；And
Mechanical requirements stake footpath is big, stake top absolute altitude to ground, construction period length etc..To meet the large area of semi-inverse method steel pipe post stake
Construction, and ensure that the axis location and perpendicularity deviation of steel pipe column meet design requirement, it is necessary to develop a kind of new technology and solve
Problem above.
The content of the invention
Goal of the invention：In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of semi-inverse method steel pipe post
Pile construction method, the construction method ensure that construction quality, progress using the lifting device pipe of wound, a whole set of device that hangs down of surveying independently is ground
And construction safety, greatly reduce construction cost, the development to half against method is significant.
Technical scheme：A kind of semi-inverse method steel pipe post pile construction method of the present invention, including following construction procedure：
（1）Stake position is positioned, and specific process is：1.1, the coordinate of each stake position is calculated according to design drawing, and determine each stake
Hole and the position relationship of adjacent control points；1.2, repair place, stake position coordinate check it is errorless after, using total powerstation construction field
It is accurately positioned in ground；1.3, using pile center as intersection point, in vertical and horizontal direction, pilot measurement goes out 4 fender piles and buried；
（2）Long shield-tube embedment, specific process is：2.1, according to pore-forming accuracy requirement and hydraulic jack vertical adjustment fulcrum force
The need for, the steel pile casting of customization 3-5m length, casing internal diameter 15-25cm bigger than bored concrete pile external diameter, wall thickness 10-20mm, upper port is pre-
Stay the slurry mouth that overflows；2.2, shield-tube embedment is buried using digging, and 4, the longitudinal and transverse direction put by drawing fender pile point is adjusted in place, in casing
The heart is not more than 20mm with stake position center superposition, its deviation, and strictly controls the perpendicularity of casing, and error is not more than 0.2%；2.3,
Casing be adjusted in place and it is fixed stably after, periphery is uniformly backfilled and compaction in layers with clay, to ensure that casing is steady in boring procedure
It is fixed not fall and periphery not running pulp；2.4, after shield-tube embedment is good, stake position is checked in time, if there is error to be more than code requirement,
Again bury；
（3）Stand column pile pore-forming, specific process is：3.1, stake machine is in place, is carried out using the instrument and meter for automation device of stake machine whole
Flat centering, bit central and stake position center superposition；Single inspection is filled in simultaneously, rig is inspected for acceptance through supervising engineer after agreement
Start drilling；3.2, drilling and forming hole with mud in the timely complementary apertures of progress, and controls the drilling and lifting speed of drilling tool, strictly
Control aperture, perpendicularity, hole depth and mud index, it is ensured that hole quality, and carry out drilling time log；3.3, first time borehole cleaning,
Get into after predetermined hole depth, the clear soil that dallies is carried out in former depths, carry and aperture, hole deviation, sediment thickness detection, parameters are carried out after brill
Meet removal stake machine after design requirement；3.4, stake holes periphery is flattened after pore-forming；
（4）Adjustment frame is laid, and specific process is：4.1, the double-deck adjustment frame of self-control is as bearing, and adjustment frame bottom surface is welded with steel
Walling crib, is easy to lay firm in well head, adjustment frame lower floor is welded with rotating shaft and base respectively along in the middle part of each medial surface of four direction, pacifies
The dynamic mechanic jacks adjusted let go as stand column pile steel pipe axis position adjustments and fixing device；4.2, aperture is repaired again
Ground, lays adjustment frame, and each angle point absolute altitude is surveyed using spirit level, and adjustment frame is adjusted into level, ensures placed in the middle when laying adjustment frame, reaches
It is overlapped to casing center line, adjustment frame center line and stake position center line；
（5）Steel reinforcement cage is laid, and specific process is：5.1, steel reinforcement cage lays preceding by bar bender squad leader's self-inspection, then by Quality Inspector
The same owner of meeting, management are carried out an acceptance inspection, and carry out acceptance of concealed work visa on the spot, and steel reinforcement cage by inspection must not transferred；
5.2, when steel reinforcement cage is transferred, hole position center is directed at, is progressively sunk at leisure using positive and negative alternate rotation, prevents collision；5.3, steel
Muscle cage is transferred by section, is welded to connect between often saving, final section steel reinforcement cage exposes to stand column pile aperture and is temporarily fixed to adjustment frame
On after with stand column pile steel pipe fix after simultaneously decentralization；
（6）Stand column pile steel pipe splices with tool pipe, and specific process is：6.1, the bottom of tool pipe is provided with socket joint steel pipe, its
Middle socket joint length of steel pipe is not less than 1.2m, and internal diameter is more than the external diameter 6-8mm of correspondence stand column pile steel pipe, and lower mouth makes groove, groove
Necessary grinding process is carried out on the outside of inner side and stand column pile steel pipe upper port, it is ensured that stand column pile steel pipe is connected with tool pipe, again may be used
Prevent concrete grout enter two pipes between gap and influence later tool pipe pull out；The axis of whole piece tool pipe must be at one
On straight line；6.2, stand column pile steel pipe carries out socket joint, specific socket joint length and stand column pile with tool pipe on processing space operating platform
The limiter position of steel pipe is determined by job site according to aperture absolute altitude, stand column pile top mark height, while in two steel pipe interfaces
Adjusted using iron wedge, it is ensured that the axis of stand column pile steel pipe and tool pipe is point-blank；6.3, to ensure perpendicularity and absolute altitude
Control, makes a steel shoulder pole with channel-section steel and is rigidly connected with tool pipe top, and the flatness of channel-section steel shoulder pole above and below needs adjustment, even
Ensure that the horizontal plane of shoulder pole is vertical with tool pipe axis after connecing；6.4, the control of one and diameter parallel are drawn on the outside of tool pipe
Line, centered on control line, with reference to the size of inclinometer pipe, fixed between the spacing line in 2 roads, the spacing line in 2 roads survey is welded with φ 8 round steel
Inclined tube, to detect and adjust two pipe axis；6.5, tool pipe is close to below channel-section steel shoulder pole and is symmetrically welded adjustable 4 flowers
Basket bolt is used to the tension rib for being fixedly connected with column steel pipe and tool pipe temporarily；6.6, the slurry mouth that overflows is set on tool pipe, and this overflows
Mouth is starched to be located above bell-and-spigot pipe；
（7）Stand column pile steel pipe is laid with tool pipe, and specific process is：7.1, stand column pile steel pipe is lifted using crawler crane unit
With tool pipe, and Hui Zhi in the air；7.2, steel pipe and the perpendicular free state of tool pipe are made after lifting, it is slow into steel reinforcement cage center
Slow decentralization, inserts well head steel reinforcement cage；7.3, stand column pile steel pipe and tool pipe to relevant position are hung, in the weldering of stand column pile outer wall of steel pipe
Hanger is connect, and steel reinforcement cage is hung on hanger, it is ensured that the effective length that stand column pile steel pipe enters steel reinforcement cage meets design；7.4,
Stand column pile steel pipe, tool pipe and steel reinforcement cage are transferred to designed elevation；7.5, turned to by suspension hook, the adjustment of hand fit and well head
Centering is adjusted to the axial location of tool pipe in frame mechanic jacks, during checked with total powerstation, it is ensured that tool pipe
Center is consistent with Zhuan Wei centers, and carries out repetition measurement to tool pipe channel-section steel shoulder pole with spirit level and horizontal guiding ruler, it is ensured that channel-section steel shoulder pole
Four angle levels, then with the spacing fixation of mechanic jacks on adjustment frame；
（8）Stand column pile steel pipe is finely tuned with tool pipe, and specific process is：8.1, inclinometer is transferred by inclinometer pipe, measured
The gradient of tool pipe；8.2, adjustment direction is determined according to the data measured, is turned to by suspension hook, the tune of hand fit and well head
Centering is adjusted to the axial location of tool pipe in school frame mechanic jacks, during checked with total powerstation, it is ensured that instrument
Tube hub is consistent with Zhuan Wei centers, and carries out repetition measurement to tool pipe channel-section steel shoulder pole with spirit level and horizontal guiding ruler, it is ensured that channel-section steel is flat
Four angle levels are carried on a shoulder pole, then with the spacing fixation of mechanic jacks on adjustment frame, setting tool pipe position of upper；
（9）Casting and compacting of concrete frame is laid, and specific process is：9.1, because regulation horizontal level and perpendicularity have been laid in aperture
Adjustment frame, it is another to make casting and compacting of concrete frame in order to avoid concreting influences adjusted good steel pipe post stake, pour and smash frame
Top surface leaves pouring for footpath size and smashes mouth, to lay conduit；9.2, lay casting and compacting of concrete frame, it is to avoid touching adjustment frame and work
Tool pipe, and ensure to pour and smash frame and lay steady；
（10）Stand column pile filling concrete, to ensure that steel pipe column interior concrete occurs without tomography and interlayer, using conduit by
Engineering pile cages bottom is transferred at steel pipe column center, is together irrigated with engineering pile body underwater concrete, is passed through underwater concrete
The continuity of perfusion, ensures the construction quality of steel pipe column interior concrete, and superfilled according to design and code requirement progress；Specific work
Sequence is：10.1, conduit must carry out waterproof test before, examine conduit sealing property, it is qualified after can use；10.2,
From pour smash opening's edge in tool pipe lay conduit carry out second of borehole cleaning, decentralization catheter procedure in operate with caution, prevent conduit
To steel pipe tool pipe sharp impacts；Change slurry borehole cleaning to the indexs such as mud balance, sediment thickness and meet code requirement, the bucket that reloads prepares
Underwater gliders；10.3, make a report on to pour before filling concrete and report table to a higher authorities for approval, conduit is all the time in concrete in filling process
In, forbid conduit proposing concrete surface, the depth in conduit Transducers Embedded in Concrete face, which is not less than under 0.5m, first batch of concrete, to fall behind,
Concrete continuous is supplied, and the control slump is in more than 20cm；10.4, it is appropriate when perfusion is to 1m above and below stand column pile steel pipe
Slow down the rate of flooding of concrete, to reduce influence of the filling concrete to steel pipe post, and accomplish diligent survey concrete surface absolute altitude
And control depth of tremie situation；10.5, after the completion of filling concrete is superfilled, it will pour and smash frame and hang, it is to avoid bump tool pipe and tune
School frame；With the perpendicularity situation of inclinometer repetition measurement tool pipe；
（11）Tool pipe is pulled out, and specific process is：11.1, after after concrete initial set, unclamp connection stand column pile steel pipe and work
Have the flower basket bolt of pipe, and tension rib is fixed on adjustment frame；11.2, tool pipe is pulled out in examination, forbids pulling out by force；11.3, examination is pulled into
After work(, top mechanic jacks are unclamped, tool pipe is slowly promoted with crane, the touching shadow to concrete inner column stake steel pipe is reduced
Ring, it is ensured that axial location, tube top absolute altitude and the perpendicularity of column steel pipe；11.4, long casing is pulled out, stake holes backfill.
Further improve above-mentioned technical proposal, the step（6）In, it is evenly equipped with the same absolute altitude of the outer wall of tool pipe some
Miniature hydraulic jack, the hydraulic jack transfers to designed elevation corresponding with long casing lower end inner wall after tool pipe.
Stand column pile steel pipe according to the data measured with that in tool pipe trim process, can determine adjustment direction, by miniature on tool pipe
Hydraulic jack adjustment tool pipe position, until perpendicularity meets design requirement.
Further, it is provided with interior steel reinforcement cage in the column steel pipe, the interior steel reinforcement cage is according to design blanking, in column steel pipe
Part and column steel-pipe welding, in order to which uniform force takes welding by both sides, cage type is made by design in the dowel of column steel pipe outer portion
Stretch into tool pipe, be not influence borehole cleaning conduit to be moved up and down with concrete perfusion conduit, what steel reinforcement cage was most pushed up put more energy into muscle diameter
It is enlarged to and is close to instrument inside pipe wall.
Further, the lower end outer wall uniform welding of the column steel pipe has some holdfasts, adds column steel tubing portions
With the switching performance of lower floor bored concrete pile so that the integraty of whole stand column pile is improved.
Further, in the step（5）Before steel reinforcement cage is laid, the also process of fabrication of reinforcing cage, in steel reinforcement cage system
During work, in steel reinforcement cage cage bar, one of round roller formula concrete pad is set every 3 meters, along steel reinforcement cage around it is symmetrical
Arrangement 4, controls protective layer thickness；Ensure that cage body is indeformable in transport and installation course, cushion block is intact.
Further, the column outer wall of steel pipe is provided with hangs muscle, and the hangs muscle upper end is temporarily fixed on flower basket bolt, treated
The hangs muscle lower end is welded to connect in steel reinforcement cage upper end after steel reinforcement cage is hung on column steel pipe, when steel reinforcement cage and the decentralization of column steel pipe
To design attitude, hangs muscle upper end releases the connection with flower basket bolt, is fixed on stake holes mouthful.
Compared with prior art, its advantage is the present invention：
（1）When this engineering method solves semi-inverse method column pile driving construction, stand column pile stake top absolute altitude is below natural absolute altitude and stake
Footpath is smaller, and common intubation operation can not construction difficult problem, it is ensured that engineering pile foundation engineering can be smoothed out, architecture quality preferably,
Reduce the reinforcement measure that the later stage produces by quality problems.
（2）Using this engineering method, compared with other steel pipe post construction equipments and construction technology technique, economy more preferably, property
Valency is than excellent, while hanging device, hanging support, stress check calculation device and can have enough to meet the need utilization, environmental protection meets establishment economizing type
The requirement in building site.
（3）Ensure steel pipe post pile driving construction controlled process, it is ensured that the axial location of stand column pile steel pipe, tube top absolute altitude and vertical
Degree meets design requirement, meets the requirement of live stand column pile construction volume production.
（4）, can be successfully in place by the accurate installation of steel pipe post stake in semi-inverse method using instrument pipe device, and the side of operation
Just, improve operating efficiency and reuse.
（5）Using a whole set of survey vertical adjusting regulating device, repetition measurement can be carried out to steel pipe post stake position and perpendicularity and adjusted,
Ensure the accuracy of steel pipe post pile driving construction.
Brief description of the drawings
Fig. 1 is the process flow chart of semi-inverse method steel pipe post pile construction method described in embodiment 1.
Fig. 2 is the structural representation of casing.
Fig. 3 is the structural representation of adjustment frame.
Fig. 4 is the connection diagram of column steel pipe and tool pipe.
Fig. 5 is the connection diagram of tool pipe and steel shoulder pole.
Fig. 6 is casting and compacting of concrete frame structural representation.
In figure：1st, column steel pipe, 2, tool pipe, 3, bell-and-spigot pipe, 4, iron wedge, 5, hanger, 6, adjustment frame, 7, steel walling crib, 8,
Overflow slurry mouth, and 9, steel shoulder pole, 10, guardrail, 11, cat ladder.
Embodiment
Technical solution of the present invention is described in detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
The embodiment.
Embodiment 1：A kind of semi-inverse method steel pipe post pile construction method, including following construction procedure：
（1）Stake position is positioned, and specific process is：1.1, the coordinate of each stake position is calculated according to design drawing, and determine each stake
Hole and the position relationship of adjacent control points；1.2, repair place, stake position coordinate check it is errorless after, using total powerstation construction field
It is accurately positioned in ground；1.3, using pile center as intersection point, in vertical and horizontal direction, pilot measurement goes out 4 fender piles and buried；
（2）Long shield-tube embedment, specific process is：2.1, according to pore-forming accuracy requirement and hydraulic jack vertical adjustment fulcrum force
The need for, the steel pile casting of customization 3-5m length, casing internal diameter 20cm bigger than bored concrete pile external diameter, wall thickness 12mm, the reserved slurry that overflows of upper port
Mouthful；2.2, shield-tube embedment is buried using digging, and 4, the longitudinal and transverse direction put by drawing fender pile point is adjusted in place, casing center and stake
Position center superposition, its deviation is not more than 20mm, and strictly controls the perpendicularity of casing, and error is not more than 0.2%；2.3, casing is adjusted
It is whole in place and it is fixed stably after, periphery is uniformly backfilled and compaction in layers with clay, to ensure that casing is not stablized in boring procedure
Fall and periphery not running pulp；2.4, after shield-tube embedment is good, stake position is checked in time, if there is error to be more than code requirement, is buried again
If；
（3）Stand column pile pore-forming, specific process is：3.1, stake machine is in place, is carried out using the instrument and meter for automation device of stake machine whole
Flat centering, bit central and stake position center superposition；Single inspection is filled in simultaneously, rig is inspected for acceptance through supervising engineer after agreement
Start drilling；3.2, drilling and forming hole with mud in the timely complementary apertures of progress, and controls the drilling and lifting speed of drilling tool, strictly
Control aperture, perpendicularity, hole depth and mud index, it is ensured that hole quality, and carry out drilling time log；3.3, first time borehole cleaning,
Get into after predetermined hole depth, the clear soil that dallies is carried out in former depths, carry and aperture, hole deviation, sediment thickness detection, parameters are carried out after brill
Meet removal stake machine after design requirement；3.4, stake holes periphery is flattened after pore-forming；
（4）Adjustment frame is laid, and specific process is：4.1, the double-deck adjustment frame of self-control is as bearing, and adjustment frame bottom surface is welded with steel
Walling crib, is easy to lay firm in well head, adjustment frame lower floor is welded with rotating shaft and base respectively along in the middle part of each medial surface of four direction, pacifies
The dynamic mechanic jacks adjusted let go as stand column pile steel pipe axis position adjustments and fixing device；4.2, aperture is repaired again
Ground, lays adjustment frame, and each angle point absolute altitude is surveyed using spirit level, and adjustment frame is adjusted into level, ensures placed in the middle when laying adjustment frame, reaches
It is overlapped to casing center line, adjustment frame center line and stake position center line；
（5）Steel reinforcement cage is laid, and specific process is：5.1, steel reinforcement cage lays preceding by bar bender squad leader's self-inspection, then by Quality Inspector
The same owner of meeting, management are carried out an acceptance inspection, and carry out acceptance of concealed work visa on the spot, and steel reinforcement cage by inspection must not transferred；
5.2, when steel reinforcement cage is transferred, hole position center is directed at, is progressively sunk at leisure using positive and negative alternate rotation, prevents collision；5.3, steel
Muscle cage is transferred by section, is welded to connect between often saving, final section steel reinforcement cage exposes to stand column pile aperture and is temporarily fixed to adjustment frame
On after with stand column pile steel pipe fix after simultaneously decentralization；
（6）Stand column pile steel pipe splices with tool pipe, and specific process is：6.1, tool pipe, which makes length, should be not less than L+3m（L
For stake top and ground height）, the bottom of tool pipe is provided with socket joint steel pipe, and wherein socket joint length of steel pipe is not less than 1.2m, and internal diameter is big
In the external diameter 6-8mm of correspondence stand column pile steel pipe, lower mouth is made on the inside of groove, groove and progress must on the outside of stand column pile steel pipe upper port
The grinding process wanted, it is ensured that stand column pile steel pipe is connected with tool pipe, can prevent again concrete grout enter two pipes between gap and
Tool pipe is pulled out later for influence；The axis of whole piece tool pipe must be point-blank；6.2, stand column pile steel pipe exists with tool pipe
Carry out socket joint on processing space operating platform, the limiter position of specific socket joint length and stand column pile steel pipe is by job site according to hole
Mouthful absolute altitude, stand column pile top mark height are determined, while in two steel pipe interfaces using the regulation of iron wedge, it is ensured that stand column pile steel pipe and instrument
The axis of pipe is point-blank；6.3, to ensure perpendicularity and absolute altitude control, a steel shoulder pole and instrument tube top are made with channel-section steel
End is rigidly connected, and the flatness of channel-section steel shoulder pole above and below needs adjustment, and the horizontal plane and tool pipe axis that shoulder pole is ensured after connection hang down
Directly；6.4, the control line of one and diameter parallel are drawn on the outside of tool pipe, centered on control line, with reference to the big of inclinometer pipe
It is small, welded with φ 8 round steel and fix inclinometer pipe between the spacing line in 2 roads, the spacing line in 2 roads, to detect and adjust two pipe axis；6.5,
Be close to below channel-section steel shoulder pole tool pipe be symmetrically welded adjustable 4 flower basket bolts to it is interim be fixedly connected column steel pipe with
The tension rib of tool pipe；6.6, the slurry mouth that overflows is set on tool pipe, and the slurry mouth that overflows is located above bell-and-spigot pipe；
（7）Stand column pile steel pipe is laid with tool pipe, and specific process is：7.1, stand column pile steel pipe is lifted using crawler crane unit
With tool pipe, and Hui Zhi in the air；7.2, steel pipe and the perpendicular free state of tool pipe are made after lifting, it is slow into steel reinforcement cage center
Slow decentralization, inserts well head steel reinforcement cage；7.3, stand column pile steel pipe and tool pipe to relevant position are hung, in the weldering of stand column pile outer wall of steel pipe
Hanger is connect, and steel reinforcement cage is hung on hanger, it is ensured that the effective length that stand column pile steel pipe enters steel reinforcement cage meets design；7.4,
Stand column pile steel pipe, tool pipe and steel reinforcement cage are transferred to designed elevation；7.5, turned to by suspension hook, the adjustment of hand fit and well head
Centering is adjusted to the axial location of tool pipe in frame mechanic jacks, during checked with total powerstation, it is ensured that tool pipe
Center is consistent with Zhuan Wei centers, and carries out repetition measurement to tool pipe channel-section steel shoulder pole with spirit level and horizontal guiding ruler, it is ensured that channel-section steel shoulder pole
Four angle levels, then with the spacing fixation of mechanic jacks on adjustment frame；
（8）Stand column pile steel pipe is finely tuned with tool pipe, and specific process is：8.1, inclinometer is transferred by inclinometer pipe, measured
The gradient of tool pipe；8.2, adjustment direction is determined according to the data measured, is turned to by suspension hook, the tune of hand fit and well head
Centering is adjusted to the axial location of tool pipe in school frame mechanic jacks, during checked with total powerstation, it is ensured that instrument
Tube hub is consistent with Zhuan Wei centers, and carries out repetition measurement to tool pipe channel-section steel shoulder pole with spirit level and horizontal guiding ruler, it is ensured that channel-section steel is flat
Four angle levels are carried on a shoulder pole, then with the spacing fixation of mechanic jacks on adjustment frame, setting tool pipe position of upper；
（9）Casting and compacting of concrete frame is laid, and specific process is：9.1, because regulation horizontal level and perpendicularity have been laid in aperture
Adjustment frame, it is another to make casting and compacting of concrete frame in order to avoid concreting influences adjusted good steel pipe post stake, pour and smash frame
Top surface leaves pouring for footpath size and smashes mouth, to lay conduit；9.2, lay casting and compacting of concrete frame, it is to avoid touching adjustment frame and work
Tool pipe, and ensure to pour and smash frame and lay steady；
（10）Stand column pile filling concrete, to ensure that steel pipe column interior concrete occurs without tomography and interlayer, using conduit by
Engineering pile cages bottom is transferred at steel pipe column center, is together irrigated with engineering pile body underwater concrete, is passed through underwater concrete
The continuity of perfusion, ensures the construction quality of steel pipe column interior concrete, and superfilled according to design and code requirement progress；Specific work
Sequence is：10.1, conduit must carry out waterproof test before, examine conduit sealing property, it is qualified after can use；10.2,
From pour smash opening's edge in tool pipe lay conduit carry out second of borehole cleaning, decentralization catheter procedure in operate with caution, prevent conduit
To steel pipe tool pipe sharp impacts；Change slurry borehole cleaning to the indexs such as mud balance, sediment thickness and meet code requirement, the bucket that reloads prepares
Underwater gliders；10.3, make a report on to pour before filling concrete and report table to a higher authorities for approval, conduit is all the time in concrete in filling process
In, forbid conduit proposing concrete surface, the depth in conduit Transducers Embedded in Concrete face, which is not less than under 0.5m, first batch of concrete, to fall behind,
Concrete continuous is supplied, and the control slump is in more than 20cm；10.4, it is appropriate when perfusion is to 1m above and below stand column pile steel pipe
Slow down the rate of flooding of concrete, to reduce influence of the filling concrete to steel pipe post, and accomplish diligent survey concrete surface absolute altitude
And control depth of tremie situation；10.5, after the completion of filling concrete is superfilled, it will pour and smash frame and hang, it is to avoid bump tool pipe and tune
School frame；With the perpendicularity situation of inclinometer repetition measurement tool pipe；
（11）Tool pipe is pulled out, and specific process is：11.1, after after concrete initial set, unclamp connection stand column pile steel pipe and work
Have the flower basket bolt of pipe, and tension rib is fixed on adjustment frame；11.2, tool pipe is pulled out in examination, forbids pulling out by force；11.3, examination is pulled into
After work(, top mechanic jacks are unclamped, tool pipe is slowly promoted with crane, the touching shadow to concrete inner column stake steel pipe is reduced
Ring, it is ensured that axial location, tube top absolute altitude and the perpendicularity of column steel pipe；11.4, long casing is pulled out, stake holes backfill.
Wherein：Step（6）Stand column pile steel pipe only need to be in step with tool pipe splicing（7）Complete before, with step（1）
Extremely（5）Not joining relation.
The step（6）In, some miniature hydraulic jacks are evenly equipped with the same absolute altitude of the outer wall of tool pipe, the oil pressure thousand
Transfer to designed elevation corresponding with long casing lower end inner wall after tool pipe in jin top.
Interior steel reinforcement cage is provided with the column steel pipe, the interior steel reinforcement cage is according to design blanking, and column steel duct is divided and vertical
Post steel-pipe welding, in order to which uniform force takes welding by both sides, the dowel of column steel pipe outer portion is made cage type by design and stretches into instrument
Guan Zhong, is not influence borehole cleaning conduit to be moved up and down with concrete perfusion conduit, muscle enlarged diameter that what steel reinforcement cage was most pushed up put more energy into
Instrument inside pipe wall is close to.
The lower end outer wall uniform welding of the column steel pipe has some holdfasts.
In the step（5）Before steel reinforcement cage is laid, the also process of fabrication of reinforcing cage, during fabrication of reinforcing cage,
In steel reinforcement cage cage bar, one of round roller formula concrete pad is set every 3 meters, 4, control are symmetrically positioned about along steel reinforcement cage
Protective layer thickness processed；Ensure that cage body is indeformable in transport and installation course, cushion block is intact.
The column outer wall of steel pipe is provided with hangs muscle, and the hangs muscle upper end is temporarily fixed on flower basket bolt, treats that steel reinforcement cage is hung
The hangs muscle lower end is welded to connect in steel reinforcement cage upper end after on column steel pipe, when steel reinforcement cage and column steel pipe are transferred to design position
Postpone, hangs muscle upper end releases the connection with flower basket bolt, be fixed on stake holes mouthful.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, it must not be explained
For to the limitation of itself of the invention., can be right under the premise of the spirit and scope of the present invention that appended claims are defined are not departed from
Various changes can be made in the form and details for it.
Claims (6)
1. a kind of semi-inverse method steel pipe post pile construction method, it is characterised in that including following construction procedure：
（1）Stake position is positioned, and specific process is：1.1, the coordinate of each stake position is calculated according to design drawing, and determine each stake holes with
The position relationship of adjacent control points；1.2, repair place, stake position coordinate check it is errorless after, it is interior on construction ground using total powerstation
It is accurately positioned；1.3, using pile center as intersection point, in vertical and horizontal direction, pilot measurement goes out 4 fender piles and buried；
（2）Long shield-tube embedment, specific process is：2.1, according to pore-forming accuracy requirement and the need of hydraulic jack vertical adjustment fulcrum force
Will, the steel pile casting of customization 3-5m length, casing internal diameter 15-25cm bigger than bored concrete pile external diameter, wall thickness 10-20mm, upper port is reserved to overflow
Starch mouth；2.2, shield-tube embedment is buried using digging, and 4, the longitudinal and transverse direction put by drawing fender pile point is adjusted in place, casing center with
Stake position center superposition, its deviation is not more than 20mm, and strictly controls the perpendicularity of casing, and error is not more than 0.2%；2.3, casing
Be adjusted in place and it is fixed stably after, periphery is uniformly backfilled and compaction in layers with clay, to ensure that casing is stable not in boring procedure
Fall and periphery not running pulp；2.4, after shield-tube embedment is good, stake position is checked in time, if having error to be more than code requirement, again
It is embedded；
（3）Stand column pile pore-forming, specific process is：3.1, stake machine is in place, and leveling pair is carried out using the instrument and meter for automation device of stake machine
In, bit central and stake position center superposition；Single inspection is filled in simultaneously, rig is inspected for acceptance through supervising engineer and started after agreeing to
Drilling；3.2, drilling and forming hole with mud in the timely complementary apertures of progress, and controls the drilling and lifting speed of drilling tool, strict control
Good aperture, perpendicularity, hole depth and mud index, it is ensured that hole quality, and carry out drilling time log；3.3, first time borehole cleaning is got into
After predetermined hole depth, the clear soil that dallies is carried out in former depths, carries and aperture, hole deviation, sediment thickness detection is carried out after brill, parameters are met
Stake machine is removed after design requirement；3.4, stake holes periphery is flattened after pore-forming；
（4）Adjustment frame is laid, and specific process is：4.1, the double-deck adjustment frame of self-control is as bearing, and adjustment frame bottom surface is welded with steel walling crib,
It is easy to lay firm in well head, adjustment frame lower floor is welded with rotating shaft and base respectively along in the middle part of each medial surface of four direction, lays hand
The mechanic jacks of dynamic regulation are used as stand column pile steel pipe axis position adjustments and fixing device；4.2, aperture place is repaired again,
Adjustment frame is laid, each angle point absolute altitude is surveyed using spirit level, adjustment frame is adjusted to level, ensures placed in the middle when laying adjustment frame, reaches
Casing center line, adjustment frame center line and stake position center line are overlapped；
（5）Steel reinforcement cage is laid, and specific process is：5.1, steel reinforcement cage is same by bar bender squad leader's self-inspection, then by Quality Inspector's meeting before laying
Owner, management are carried out an acceptance inspection, and carry out acceptance of concealed work visa on the spot, and steel reinforcement cage by inspection must not transferred；5.2, steel
When muscle cage is transferred, hole position center is directed at, is progressively sunk at leisure using positive and negative alternate rotation, prevents collision；5.3, steel reinforcement cage is pressed
Section decentralization, often save between be welded to connect, final section steel reinforcement cage expose to stand column pile aperture be temporarily fixed to treat on adjustment frame with
Stand column pile steel pipe is transferred simultaneously after fixing；
（6）Stand column pile steel pipe splices with tool pipe, and specific process is：6.1, the bottom of tool pipe is provided with socket joint steel pipe, wherein holding
Insert length of steel pipe and be not less than 1.2m, internal diameter is more than the external diameter 6-8mm of correspondence stand column pile steel pipe, and lower mouth is made on the inside of groove, groove
With the necessary grinding process of progress on the outside of stand column pile steel pipe upper port again, it is ensured that stand column pile steel pipe is connected with tool pipe, can be prevented
Concrete grout enter two pipes between gap and influence later tool pipe pull out；The axis of whole piece tool pipe must be in straight line
On；6.2, stand column pile steel pipe carries out socket joint, specific socket joint length and stand column pile steel pipe with tool pipe on processing space operating platform
Limiter position determined by job site according to aperture absolute altitude, stand column pile top mark height, while two steel pipe interfaces use
Iron wedge is adjusted, it is ensured that the axis of stand column pile steel pipe and tool pipe is point-blank；6.3, to ensure perpendicularity and absolute altitude control,
A steel shoulder pole is made with channel-section steel to be rigidly connected with tool pipe top, the flatness of channel-section steel shoulder pole above and below needs adjustment, after connection really
The horizontal plane for protecting shoulder pole is vertical with tool pipe axis；6.4, the control line of one and diameter parallel are drawn on the outside of tool pipe, with
Centered on control line, with reference to the size of inclinometer pipe, welded with φ 8 round steel and fix inclinometer pipe between the spacing line in 2 roads, the spacing line in 2 roads,
To detect and adjust two pipe axis；6.5, tool pipe is close to below channel-section steel shoulder pole and is symmetrically welded adjustable 4 gaily decorated basket spiral shells
Bolt is used to the tension rib for being fixedly connected with column steel pipe and tool pipe temporarily；6.6, the slurry mouth that overflows is set on tool pipe, the slurry mouth that overflows
Above bell-and-spigot pipe；
（7）Stand column pile steel pipe is laid with tool pipe, and specific process is：7.1, stand column pile steel pipe and work are lifted using crawler crane unit
Tool pipe, and Hui Zhi in the air；7.2, steel pipe and the perpendicular free state of tool pipe are made after lifting, into steel reinforcement cage center it is slow under
Put, insert well head steel reinforcement cage；7.3, stand column pile steel pipe and tool pipe to relevant position are hung, is hung in the welding of stand column pile outer wall of steel pipe
Ear, and steel reinforcement cage is hung on hanger, it is ensured that the effective length that stand column pile steel pipe enters steel reinforcement cage meets design；7.4, decentralization
Stand column pile steel pipe, tool pipe and steel reinforcement cage are to designed elevation；7.5, turned to by suspension hook, the adjustment frame machine of hand fit and well head
Centering is adjusted in the axial location of tool jack pair tool pipe, during checked with total powerstation, it is ensured that instrument tube hub
It is consistent with Zhuan Wei centers, and repetition measurement is carried out to tool pipe channel-section steel shoulder pole with spirit level and horizontal guiding ruler, it is ensured that four, channel-section steel shoulder pole
Angle level, then with the spacing fixation of mechanic jacks on adjustment frame；
（8）Stand column pile steel pipe is finely tuned with tool pipe, and specific process is：8.1, inclinometer is transferred by inclinometer pipe, instrument is measured
The gradient of pipe；8.2, adjustment direction is determined according to the data measured, is turned to by suspension hook, the adjustment frame of hand fit and well head
Centering is adjusted to the axial location of tool pipe in mechanic jacks, during checked with total powerstation, it is ensured that in tool pipe
Xin Yuzhuanwei centers are consistent, and carry out repetition measurement to tool pipe channel-section steel shoulder pole with spirit level and horizontal guiding ruler, it is ensured that channel-section steel shoulder pole four
Individual angle level, then with the spacing fixation of mechanic jacks on adjustment frame, setting tool pipe position of upper；
（9）Casting and compacting of concrete frame is laid, and specific process is：9.1, because regulation horizontal level and the tune of perpendicularity have been laid in aperture
School frame, it is another to make casting and compacting of concrete frame in order to avoid concreting influences adjusted good steel pipe post stake, pour and smash top of support
Leave pouring for footpath size and smash mouth, to lay conduit；9.2, lay casting and compacting of concrete frame, it is to avoid touching adjustment frame and instrument
Pipe, and ensure to pour and smash frame and lay steady；
（10）Stand column pile filling concrete, to ensure that steel pipe column interior concrete occurs without tomography and interlayer, using conduit by steel pipe
Engineering pile cages bottom is transferred at post center, is together irrigated with engineering pile body underwater concrete, is passed through underwater gliders
Continuity, ensure steel pipe column interior concrete construction quality, and according to design and code requirement carry out it is superfilled；Specific process
For：10.1, conduit must carry out waterproof test before, examine conduit sealing property, it is qualified after can use；10.2, from
Pour to smash opening's edge and and conduit is laid in tool pipe to be operated with caution in second of borehole cleaning, decentralization catheter procedure, prevent conduit pair
Steel pipe tool pipe sharp impacts；Change slurry borehole cleaning to the indexs such as mud balance, sediment thickness and meet code requirement, the bucket that reloads prepares water
Lower filling concrete；10.3, make a report on to pour before filling concrete and report table to a higher authorities for approval, in filling process conduit all the time in concrete,
Forbid conduit proposing concrete surface, the depth in conduit Transducers Embedded in Concrete face, which is not less than under 0.5m, first batch of concrete, to fall behind, coagulation
Soil is without interruption, and the control slump is in more than 20cm；10.4, when perfusion is to 1m above and below stand column pile steel pipe, suitably to slow down
The rate of flooding of concrete, to reduce influence of the filling concrete to steel pipe post, and accomplishes diligent survey concrete surface absolute altitude and control
Depth of tremie situation processed；10.5, after the completion of filling concrete is superfilled, it will pour and smash frame and hang, it is to avoid bump tool pipe and adjustment frame；
With the perpendicularity situation of inclinometer repetition measurement tool pipe；
（11）Tool pipe is pulled out, and specific process is：11.1, after after concrete initial set, unclamp connection stand column pile steel pipe and tool pipe
Flower basket bolt, and tension rib is fixed on adjustment frame；11.2, tool pipe is pulled out in examination, forbids pulling out by force；11.3, examination is pulled into after work(,
Top mechanic jacks are unclamped, tool pipe is slowly promoted with crane, reducing the touching on concrete inner column stake steel pipe influences, really
Protect axial location, tube top absolute altitude and the perpendicularity of column steel pipe；11.4, long casing is pulled out, stake holes backfill.
2. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, it is characterised in that the step
（6）In, some miniature hydraulic jacks are evenly equipped with the same absolute altitude of the outer wall of tool pipe, the miniature hydraulic jack treats tool pipe
It is corresponding with long casing lower end inner wall after decentralization to designed elevation.
3. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, it is characterised in that the column steel
Interior steel reinforcement cage is provided with pipe, the interior steel reinforcement cage is according to design blanking, column steel duct point and column steel-pipe welding, for stress
Welding by both sides uniformly is taken, the dowel of column steel pipe outer portion is made cage type by design and stretched into tool pipe, is not influence borehole cleaning to lead
Pipe is moved up and down with concrete perfusion conduit, and muscle enlarged diameter that what steel reinforcement cage was most pushed up put more energy into extremely is close to instrument inside pipe wall.
4. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, it is characterised in that the column steel
The lower end outer wall uniform welding of pipe has some holdfasts.
5. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, it is characterised in that in the step
（5）Before steel reinforcement cage is laid, the also process of fabrication of reinforcing cage, during fabrication of reinforcing cage, in steel reinforcement cage cage bar, every
3 meters of settings, one of round roller formula concrete pad, is symmetrically positioned about 4 along steel reinforcement cage, controls protective layer thickness；Transport and
Ensure that cage body is indeformable in installation course, cushion block is intact.
6. a kind of semi-inverse method steel pipe post pile construction method according to claim 1, it is characterised in that the column steel
Pipe outer wall is provided with hangs muscle, and the hangs muscle upper end is temporarily fixed on flower basket bolt, should after steel reinforcement cage is hung on column steel pipe
Hangs muscle lower end is welded to connect in steel reinforcement cage upper end, and after steel reinforcement cage is transferred to design attitude with column steel pipe, hangs muscle upper end is released
With the connection of flower basket bolt, stake holes mouthful is fixed on.
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| CN110016910A (en) * | 2019-04-26 | 2019-07-16 | 重庆交通大学 | Gasbag-type high-precision positioner and construction method can be recycled in a kind of steel pipe post stake |
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