CN110219326A - The underwater vertical adjustment construction technology of inverse method one-column one-pile - Google Patents
The underwater vertical adjustment construction technology of inverse method one-column one-pile Download PDFInfo
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- CN110219326A CN110219326A CN201910434424.1A CN201910434424A CN110219326A CN 110219326 A CN110219326 A CN 110219326A CN 201910434424 A CN201910434424 A CN 201910434424A CN 110219326 A CN110219326 A CN 110219326A
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- positioning
- vertical adjustment
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Piles And Underground Anchors (AREA)
- Foundations (AREA)
Abstract
The invention discloses a kind of underwater vertical adjustment construction technologies of inverse method one-column one-pile, include the following steps: S1, and positioning and plumbing mechanism at the top of steel pipe column is installed on concrete platform；Installation laser dipmeter is accurately positioned on steel pipe column in S2；S3 lifts steel pipe column；S4, the acquisition and output of real-time monitoring laser tilt meter data；S5 is allowed to meet design requirement according to orientation and deviation that laser inclinometer indicates by the fine tuning that positioning and plumbing mechanism at the top of steel pipe column and steel pipe column verticality adjustment mechanism carry out steel pipe column verticality；S6, when steel pipe column straightening and when reaching design requirement, be locked wirerope, is poured underwater concrete.The present invention can the verticality to steel pipe column carried out in entire work progress at any time dynamic adjust.It is not required to traditional vertical adjustment frame and tool segment, and real-time monitoring vertical adjustment quick, convenient, accurately can be carried out to steel pipe column verticality, so that construction efficiency significantly improves.
Description
Technical field
The present invention relates to building construction technologies, and in particular to adverse construction method technique.
Background technique
With the development of social economy and the raising of urban land cost, large-scale construction engineering is sent out to advanced direction
Exhibition, underground engineering " adverse construction method technique " compared to traditional open type along the practice have reduce foundation pit deformation, save support expense,
The advantages that shortening the construction time, is a kind of green construction technology of energy-saving and environmental protection, so Top-Down Construction Technique is by more and more common
Application.
The effect of main structure and construction loads, underground knot are completed as main support for one pile for one column in adverse construction method
After the completion of structure construction, the general external wrapping concrete of steel pipe column is as basement permanent structure stress column, therefore the positioning of steel pipe column
It must be strictly controlled precision with verticality, to meet design requirement.Steel pipe column verticality is bigger than normal will increase column in carrying
Additional bending moment, and to column external wrapping concrete construction bring difficulty.Therefore the vertical precision of steel pipe column construction, which becomes, is badly in need of
The construction difficult problem of solution.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of underwater vertical adjustment construction technologies of inverse method one-column one-pile, can
Dynamic at any time is carried out in entire work progress with the verticality to steel pipe column to adjust.
In order to solve the above technical problems, the present invention adopts the following technical scheme: the underwater vertical adjustment construction of inverse method one-column one-pile
Technique, using the verticality of vertical adjustment constructing device adjustment steel pipe column, which includes: steel pipe column gradient measurement machine
Structure, including be installed on the laser dipmeter of steel pipe column top-side and be installed on steel pipe column bottom sides and with laser dipmeter
The corresponding light target in position；
Positioning and plumbing mechanism at the top of steel pipe column, including be arranged at the top of steel pile casting and be fixed on plane on concrete platform
On positioning and plumbing steel plate, the positioning and plumbing bracket that is installed on positioning and plumbing steel plate, the positioning and plumbing steel plate is equipped with and steel
The aperture that casing central axis is overlapped, the positioning and plumbing branch are provided with the location hole being overlapped with port axes, the location hole
Adjustment steel pipe column top position is peripherally connected with so that the positioning that steel pipe column top central axis is overlapped with stake holes central axis
Screw；
Steel pipe column verticality adjustment mechanism, including four wirerope that steel pipe column bottom circumferentially uniformly connects, on ground
It is circumferentially uniformly distributed there are four hydraulic rope tightener around positioning and plumbing steel plate, the upper end of four wirerope respectively with four hydraulic rope tighteners
Connection；
Vertical adjustment construction technology includes the following steps:
S1 installs positioning and plumbing mechanism at the top of steel pipe column on concrete platform；
Installation laser dipmeter is accurately positioned on steel pipe column in S2；
S3 lifts steel pipe column；
S4, the acquisition and output of real-time monitoring laser tilt meter data；
S5 passes through positioning and plumbing mechanism and steel pipe at the top of steel pipe column according to orientation and deviation that laser inclinometer indicates
The fine tuning that column verticality adjustment mechanism carries out steel pipe column verticality is allowed to meet design requirement；
S6, when steel pipe column straightening and when reaching design requirement, be locked wirerope, is poured underwater concrete.
Optionally, the positioning and plumbing bracket includes that two crossbeams arranged side by side and two are arranged side by side and hang down with crossbeam
Direct-connected to be connected to conplane stringer, two crossbeams and two stringers surround the location hole of square.
Optionally, two set screws are connected in the middle part of each edge of location hole side by side, and wirerope is from two set screws
Between limit space pass through.
Optionally, otic placode is fixed in the lower end of the wirerope, and the bottom sides of the steel pipe column offer otic placode installation
Hole, otic placode insertion otic placode mounting hole are simultaneously welded and fixed with steel pipe column.
Optionally, the top-side of the steel pipe column is welded with bracket, is welded and connected at the top of the bracket and steel pipe
The vertical shelf of column.
Optionally, it is equipped with location panel above the shelf, it is fixed for adjusting to be equipped between the shelf and location panel
The adjusting bolt of position flatbed horizontal.
Optionally, the positioning and plumbing steel plate is fixed on concrete platform with setscrew.
Optionally, the positioning and plumbing steel plate is welded with the earth anchor being embedded in concrete platform in advance.
The present invention by adopting the above technical scheme, according to orientation and deviation that laser dipmeter indicates, it is vertical to carry out steel pipe column
The fine tuning of degree is allowed to meet design requirement, and when steel pipe column straightening and when reaching design requirement, be locked wirerope, and casting is underwater
Concrete.
It has the following beneficial effects:
1, it currently, conventional deviational survey tube method cannot reflect the absolute tilt of tested steel lattice column cylinder in real time, needs to measure
→ adjustment → repetition measurement → adjustment → repetition measurement ..., and laser dipmeter can reflect that the inclination of tested steel lattice column cylinder becomes in real time
Change situation, laser dipmeter Surveying Actual Precision is not less than 1/600, and theoretical measurement accuracy avoids artificial 1/1500 or more
Error caused by factor, so repeatable accuracy is very high.
2, the hole inner column perpendicularity deviation value size shown according to laser inclinometer and direction, using fixed at the top of steel pipe column
Position vertical adjustment mechanism and steel pipe column verticality adjustment mechanism carry out verticality adjustment, can the verticality to steel pipe column entirely constructing
Dynamic at any time is carried out in the process to adjust.It is not required to traditional vertical adjustment frame and tool segment, and can be quick, convenient, accurately right
Steel pipe column verticality carries out real-time monitoring vertical adjustment, so that construction efficiency significantly improves.Current traditional monitoring be can change in technology
Present on accuracy error, low efficiency status.
3, the vertical adjustment constructing device machine-shaping in production, scene only need to simply install.At low cost, use
Service life is long, light-weight, small in size, easy to carry.
The specific technical solution of the present invention and its advantages will in the following detailed description in conjunction with attached drawing into
Row detailed description.
Detailed description of the invention
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the underwater vertical adjustment construction flow chart of inverse method one-column one-pile；
Fig. 2 is positioning and plumbing mechanism structure schematic diagram at the top of steel pipe column；
Fig. 3 is 1-1 the schematic diagram of the section structure in Fig. 2；
Fig. 4 is steel pipe column verticality adjustment mechanism structural schematic diagram；
Fig. 5 is the complete plumbness schematic diagram of steel pipe column；
Fig. 6 is the angled status diagram of steel pipe column.
Specific embodiment
Present invention steel pipes such as one pile for one column steel lattice column, steel pipe column suitable for the more demanding reverse construction of verticality
The construction of column is suitable for various geology soil layers.The engineerings such as industrial civil building, subway station suitable for adverse construction method.
Embodiment one
As shown in Figures 2 to 4, the underwater vertical adjustment constructing device of inverse method one-column one-pile, for adjusting the verticality of steel pipe column,
Steel pipe column 3 is put into steel pile casting 1, and concrete platform 11 is arranged in surrounding at the top of steel pile casting, which includes:
Steel pipe column gradient measurement mechanism, including being installed on the laser dipmeter 6 of steel pipe column top-side and being installed on
Steel pipe column bottom sides and light target corresponding with laser dipmeter position；
Positioning and plumbing mechanism at the top of steel pipe column, including be arranged at the top of steel pile casting and be fixed on plane on concrete platform
On positioning and plumbing steel plate 12, the positioning and plumbing bracket that is installed on positioning and plumbing steel plate, the positioning and plumbing steel plate be equipped with
The aperture that steel pile casting central axis is overlapped, the positioning and plumbing branch are provided with the location hole being overlapped with port axes, the positioning
Hole is peripherally connected with adjustment steel pipe column top position so that steel pipe column top central axis is determined with what stake holes central axis was overlapped
Position screw 24；
Steel pipe column verticality adjustment mechanism, including four wirerope 4 that steel pipe column bottom circumferentially uniformly connects, on ground
It is circumferentially uniformly distributed there are four hydraulic rope tightener 5 around positioning and plumbing steel plate, the upper end of four wirerope respectively with four hydraulic tight ropes
Device connection.
Laser dipmeter is the organic assembling of laser and dipmeter, and laser is in order to which laser dipmeter is on steel pile
Accurate positioning and installation, after being installed, laser rays is exactly the axis of steel pile, axis vertically with the cross section of steel pile,
So laser at this time is also vertically with the cross section of steel pile, laser rays just represents the axis of steel pile.Laser and dipmeter
Measurement axis is parallel and guarantees sufficiently high precision.After laser dipmeter installs, real-time monitoring reality and general high-precision
Dipmeter be it is the same, the measurement axis of dipmeter is exactly laser, that is, the axis of steel pile, the number that dipmeter is measured in real time
According to the angle of the axis and dipmeter plumb line that are exactly steel pile, i.e. the X of steel pile, Y-direction (if it is inclined in two-way instrument) incline
Angle.
According to orientation and deviation that laser dipmeter indicates, wirerope is stretched using euphroe, carries out steel pipe column verticality
Fine tuning be allowed to meet design requirement.When steel pipe column straightening and when reaching design requirement, be locked wirerope, is poured underwater mixed
Solidifying soil.
Shown in referring to figs. 2 and 3, the positioning and plumbing bracket includes that two crossbeams 21 arranged side by side and two set side by side
It sets and is connected to conplane stringer 22 with beam vertical, two crossbeams and two stringers surround the location hole of square.It is fixed
The both ends of corresponding two crossbeams 21 are equipped with locating slot 23 on position vertical adjustment steel plate 12, and locating slot can be vertically welded in positioning by angle steel and be adjusted
It is formed on vertical steel plate 12, the both ends of two crossbeams 21 is positioned.Two stringers are welded on side by side between two crossbeams, and two
Crossbeam and two stringers can be made of angle steel or square steel.Two set screws are connected in the middle part of each edge of location hole side by side
24, and wirerope passes through from the limit space between two set screws.Verticality adjustment can be carried out using set screw, with
Steel pipe column verticality adjustment mechanism cooperation, until verticality meets design requirement.It is perfused after verticality meets design requirement mixed
Solidifying soil after concrete initial set, then positioning and plumbing mechanism at the top of steel pipe column is removed.
In the present embodiment, otic placode is fixed in the lower end of the wirerope, and the bottom sides of the steel pipe column offer ear
Plate mounting hole, otic placode insertion otic placode mounting hole are simultaneously welded and fixed with steel pipe column.
As an implementation, the top-side of the steel pipe column is welded with bracket, and the top of the bracket, which is welded, to be connected
It is connected to the shelf vertical with steel pipe column.It is equipped with location panel above the shelf, is equipped with and uses between the shelf and location panel
In the adjusting bolt for adjusting location panel level.
Laser dipmeter carries rechargeable battery, can be continuous work 24 hours or more, supplies when measuring at the scene without external
Electricity, it is convenient and efficient.
Embodiment two
Refering to what is shown in Fig. 1, the present invention also provides a kind of underwater vertical adjustment construction technology of inverse method one-column one-pile, including it is as follows
Step:
S1 installs positioning and plumbing mechanism at the top of steel pipe column on concrete platform；
Installation laser dipmeter is accurately positioned on steel pipe column in S2；
S3 lifts steel pipe column；
S4, the acquisition and output of real-time monitoring laser tilt meter data；
S5 passes through positioning and plumbing mechanism and steel pipe at the top of steel pipe column according to orientation and deviation that laser inclinometer indicates
The fine tuning that column verticality adjustment mechanism carries out steel pipe column verticality is allowed to meet design requirement；
S6, when steel pipe column straightening and when reaching design requirement, be locked wirerope, is poured underwater concrete.
After measurement and positioning, by positioning and plumbing Interal fixation in concrete platform, make orifice center axis and stake holes central axis
Line is overlapped.The positioning and plumbing steel plate is fixed on concrete platform with setscrew.Alternatively, the positioning and plumbing steel plate with it is pre-buried
In the earth anchor welding in concrete platform.
The lifting of steel pipe (lattice) column uses 80T/100T crawler crane and steam crane double-machine lifting crane, the construction method of aerial Hui Zhi.
Laser inclinometer is first installed on the ground before lifting, hang it is straight after with its verticality of theodolite bidirectional correcting, it is vertical after by steel pipe (lattice
Structure) column hangs toward aperture and slowly in tripping in hole.If steel pipe (lattice) capital absolute altitude is uneven, the adjusting bolt tune on shelf can be passed through
Section is until top horizontal.
The method that the present invention mainly uses real-time monitoring system and vertical adjustment to combine, is adjusted steel pile gradient.It is logical
Real-time Monitoring Data is crossed, keeps steel pipe column strictly placed in the middle after correcting repeatedly, and the verticality of steel pipe column is made to reach design requirement and make
With requiring.
If laser inclinometer shows that verticality of stand column is not up to 1/600 design requirement, must using the vertical adjustment constructing device into
Row steel pipe (lattice) straightening work, until verticality meets design requirement.
The step of adjusting verticality:
1) installation laser dipmeter is accurately positioned on steel pipe column.
2) acquisition and output of Real-time Monitoring Data, data export in real time is divided into two kinds of operating conditions.
Operating condition 1: complete plumbness.As shown in Figure 5, in figure: steel pipe element cylinder 301, laser 601,
It is lifted with steel pile in go into the well (hole) after the installation positioning of laser dipmeter, when steel pile is in complete plumbness,
Steel pile is overlapped with the plumb line of laser dipmeter, both: laser dipmeter is measured and steel pile deflection zero degree.Because dipmeter
It is parallel with steel pile bus L (pass through instrument installation laser positioning guarantee) to measure axis, thus the measurement axis of dipmeter and its
Angle of the axis (or a certain item can represent steel pile axis bus) of the angle of plumb line i.e. steel pile with plumb line.
Operating condition 2: angled state.As shown in Figure 6, in figure: the natural vertical line 602 of laser dipmeter, steel pipe column and plumb line
Angle 603, when steel pile has certain deflection, the measurement axis of dipmeter and the plumb line of dipmeter just have an angle defeated in real time
Out, that is, the axis of steel pile (or a certain item can represent steel pile axis bus) and the angle of the plumb line of dipmeter it is real
When output [because the measurement axis of dipmeter is exactly laser axis, that is, (or a certain item can represent steel structure to the axis of steel pile
The bus of mast axis)].
3) deviation azimuth is determined according to the information fed back under different operating conditions, adjust the adjusting rod of vertical adjustment frame, finally make laser
Dipmeter displacement readings △ X and △ Y zero, until meeting the requirements, verticality, which is adjusted, to be completed.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but is not limited to content described in specific embodiment above.It is any
Modification without departing from function and structure principle of the invention is intended to be included in the range of claims.
Claims (8)
1. the underwater vertical adjustment construction technology of inverse method one-column one-pile, special using the verticality of vertical adjustment constructing device adjustment steel pipe column
Sign is: the vertical adjustment constructing device includes: steel pipe column gradient measurement mechanism, the laser including being installed on steel pipe column top-side
Dipmeter and it is installed on steel pipe column bottom sides and light target corresponding with laser dipmeter position；
Positioning and plumbing mechanism at the top of steel pipe column, including being arranged at the top of steel pile casting and being fixed on concrete platform in plane
Positioning and plumbing steel plate, the positioning and plumbing bracket being installed on positioning and plumbing steel plate, the positioning and plumbing steel plate is equipped with and steel pile casting
The aperture that central axis is overlapped, the positioning and plumbing branch are provided with the location hole being overlapped with port axes, and the location hole is along week
Edge is connected with adjustment steel pipe column top position so that the set screw that steel pipe column top central axis is overlapped with stake holes central axis；
Steel pipe column verticality adjustment mechanism is surround including four wirerope that steel pipe column bottom circumferentially uniformly connects on ground
Positioning and plumbing steel plate is circumferentially uniformly distributed there are four hydraulic rope tightener, and the upper end of four wirerope connects with four hydraulic rope tighteners respectively
It connects；
Vertical adjustment construction technology includes the following steps:
S1 installs positioning and plumbing mechanism at the top of steel pipe column on concrete platform；
Installation laser dipmeter is accurately positioned on steel pipe column in S2；
S3 lifts steel pipe column；
S4, the acquisition and output of real-time monitoring laser tilt meter data；
S5 is hung down according to orientation and deviation that laser inclinometer indicates by positioning and plumbing mechanism at the top of steel pipe column and steel pipe column
The fine tuning that straight degree adjustment mechanism carries out steel pipe column verticality is allowed to meet design requirement；
S6, when steel pipe column straightening and when reaching design requirement, be locked wirerope, is poured underwater concrete.
2. the underwater vertical adjustment construction technology of inverse method one-column one-pile according to claim 1, it is characterised in that: the positioning is adjusted
Vertical bracket includes that two crossbeams arranged side by side and two are arranged side by side and are connected to conplane stringer with beam vertical, and two
Root crossbeam and two stringers surround the location hole of square.
3. the underwater vertical adjustment construction technology of inverse method one-column one-pile according to claim 2, it is characterised in that: location hole it is every
Two set screws are connected in the middle part of side side by side, and wirerope passes through from the limit space between two set screws.
4. the underwater vertical adjustment construction technology of inverse method one-column one-pile according to claim 1, it is characterised in that: the wirerope
Lower end be fixed on otic placode, the bottom sides of the steel pipe column offer otic placode mounting hole, otic placode be inserted into otic placode mounting hole and with
Steel pipe column is welded and fixed.
5. the underwater vertical adjustment construction technology of inverse method one-column one-pile according to claim 1, it is characterised in that: the steel pipe column
Top-side be welded with bracket, the shelf vertical with steel pipe column is welded and connected at the top of the bracket.
6. the underwater vertical adjustment construction technology of inverse method one-column one-pile according to claim 5, it is characterised in that: on the shelf
Side is equipped with location panel, and the adjusting bolt for adjusting location panel level is equipped between the shelf and location panel.
7. the underwater vertical adjustment construction technology of inverse method one-column one-pile according to claim 1, it is characterised in that: the positioning is adjusted
Vertical steel plate is fixed on concrete platform with setscrew.
8. the underwater vertical adjustment construction technology of inverse method one-column one-pile according to claim 1, it is characterised in that: the positioning is adjusted
The steel plate that hangs down is welded with the earth anchor being embedded in concrete platform in advance.
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| CN201910434424.1A CN110219326B (en) | 2019-05-23 | 2019-05-23 | Reverse construction method one-column one-pile underwater verticality adjusting construction process |
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| CN201910434424.1A CN110219326B (en) | 2019-05-23 | 2019-05-23 | Reverse construction method one-column one-pile underwater verticality adjusting construction process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111042135A (en) * | 2019-12-27 | 2020-04-21 | 上海建工四建集团有限公司 | Novel one-column one-pile verticality adjusting construction method |
| CN112195917A (en) * | 2020-09-28 | 2021-01-08 | 开普天（上海）岩土科技有限公司 | Steel upright column deviation rectifying method in one-column one-pile construction |
| CN114108624A (en) * | 2021-12-21 | 2022-03-01 | 中建八局第三建设有限公司 | Two-adjustment one-control type perpendicularity control construction method for one-column one-pile steel pipe column |
| CN114277802A (en) * | 2021-12-13 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Positioning construction structure of reverse construction method steel pipe structure column rear insertion method |
| CN114277803A (en) * | 2021-12-13 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Reverse construction method steel pipe structure column rear insertion method positioning construction method |
| CN114369996A (en) * | 2021-11-26 | 2022-04-19 | 中铁二局集团有限公司 | Method for mounting steel pipe column of pier in bridge water |
| CN115110528A (en) * | 2022-05-23 | 2022-09-27 | 中建八局发展建设有限公司 | Real-time monitoring system and method for adjusting verticality of pile foundation steel stand column |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111042135A (en) * | 2019-12-27 | 2020-04-21 | 上海建工四建集团有限公司 | Novel one-column one-pile verticality adjusting construction method |
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| CN114369996A (en) * | 2021-11-26 | 2022-04-19 | 中铁二局集团有限公司 | Method for mounting steel pipe column of pier in bridge water |
| CN114277802A (en) * | 2021-12-13 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Positioning construction structure of reverse construction method steel pipe structure column rear insertion method |
| CN114277803A (en) * | 2021-12-13 | 2022-04-05 | 深圳市工勘岩土集团有限公司 | Reverse construction method steel pipe structure column rear insertion method positioning construction method |
| CN114277803B (en) * | 2021-12-13 | 2023-08-25 | 深圳市工勘岩土集团有限公司 | Post-insertion method positioning construction method for reverse construction method steel pipe structural column |
| CN114277802B (en) * | 2021-12-13 | 2023-08-25 | 深圳市工勘岩土集团有限公司 | Post-insertion method positioning construction structure for reverse construction method steel pipe structural column |
| CN114108624A (en) * | 2021-12-21 | 2022-03-01 | 中建八局第三建设有限公司 | Two-adjustment one-control type perpendicularity control construction method for one-column one-pile steel pipe column |
| CN115110528A (en) * | 2022-05-23 | 2022-09-27 | 中建八局发展建设有限公司 | Real-time monitoring system and method for adjusting verticality of pile foundation steel stand column |
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