CN106930406A - A kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure - Google Patents
A kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure Download PDFInfo
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- CN106930406A CN106930406A CN201710168234.0A CN201710168234A CN106930406A CN 106930406 A CN106930406 A CN 106930406A CN 201710168234 A CN201710168234 A CN 201710168234A CN 106930406 A CN106930406 A CN 106930406A
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- locating template
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 90
- 239000010959 steel Substances 0.000 title claims abstract description 90
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
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- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- 238000010276 construction Methods 0.000 abstract description 21
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- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
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- 239000004568 cement Substances 0.000 description 2
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
- E04G21/185—Means for positioning building parts or elements for anchoring elements or elements to be incorporated in the structure
Abstract
The invention discloses a kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure：A () opens up identical anchor hole on two pieces of locating templates, two pieces of locating templates are distributed and just right up and down, each self-retaining；B () penetrates crab-bolt in two pieces of anchor holes of locating template one by one, and by the bottom surface pad level of all crab-bolts；C () adjusts two pieces of locating templates to level respectively；Each crab-bolt is adjusted again, each crab-bolt is each perpendicular to locating template；D () connects support steel bar between adjacent two crab-bolts；E () is installing leveling nut from two pieces of locating templates of crab-bolt top dismounting, reinstall one piece of locating template；F () adjusts the locating template reinstalled to level by leveling nut, fixing nut is installed again in the top of the locating template.Speed is slow, efficiency is low when the present invention is used to solve the problems, such as steel kind design positioning construction in the prior art, realizes simplifying on-site construction processes when steel kind design is positioned, and improves the purpose of efficiency of construction.
Description
Technical field
The present invention relates to steel building construction field, and in particular to a kind of preparation side of Anchor Bolts in Steel Column Bases positioning structure
Method.
Background technology
With the continuous popularization of steel building, all kinds of structural steelwork construction project scales expand day by day, steel construction work
The projects such as industry factory building, steel house, high-rise steel structure, steel construction venue are increasing.In steel building, steel kind design one
As using anchor bolts flat board suspension column.Crab-bolt is the key position on connection basis and superstructure, for ensureing that steel column is accurate
Positioning, therefore the quality of pedestal anchor bolt construction quality directly affects total quality and the safe handling of building structure.Conventional
, it is necessary to set the external control stake point of each axis in basal perimeter in work progress, set up during so as to pre-buried pedestal anchor bolt theodolite from
Both direction is thrown and is surveyed in length and breadth, then positions relative distance per post sill anchor with steel tape and to each group between pin crab-bolt
Location dimension.The method has the following disadvantages：Positioning survey station is more, and measuring process is cumbersome, and the error that artificial operation is produced is big, fixed
Bit manipulation difficulty is higher, and accuracy is difficult to control.Regarding to the issue above, some Anchor Bolts in Steel Column Bases positioning is proposed in the prior art
Device, can to a certain extent improve precision during installation.But existing positioner is to use two-layer location structure, i.e.,
The combining structure of two-layer locating template, is fixed between two-layer locating template by support member.Use at the scene after crab-bolt is positioned,
Need to dismantle two-layer locating template and support member therebetween one by one, speed relatively slow, inefficiency.
The content of the invention
It is an object of the invention to provide a kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure, to solve in the prior art
The problem that speed is slow, efficiency is low during steel kind design positioning construction, is realized simplifying on-site construction processes when steel kind design is positioned, and raising is applied
The purpose of work efficiency rate.
The present invention is achieved through the following technical solutions：
A kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure, comprises the following steps：
A () opens up arrangement and the identical anchor hole of size on two pieces of locating templates, two pieces of locating templates are adjusted
It is whole to be distributed up and down and just right, then each self-retaining；
B () penetrates crab-bolt in two pieces of anchor holes of locating template one by one, and by the bottom surface pad level of all crab-bolts；
C () adjusts two pieces of locating templates to level respectively；Each crab-bolt is adjusted again, each crab-bolt is each perpendicular to locating template；
D () connects support steel bar between adjacent two crab-bolts, support steel bar is connected with crab-bolt spot welding；All support steel bars
It is respectively positioned under locating template；
E () installs leveling nut from two pieces of locating templates of crab-bolt top dismounting on each bolt, reinstall one again afterwards
Block locating template is on each leveling nut；
F () adjusts the locating template reinstalled to level by leveling nut, installed again in the top of the locating template
Fixing nut.
The problem that speed is slow, efficiency is low when constructing is positioned for steel kind design in the prior art, the present invention proposes a kind of steel column
The preparation method of pin crab-bolt positioning structure, this method is used to prepare a kind of Anchor Bolts in Steel Column Bases positioning apparatus, made by this method
The device created, simple structure, easy to use, speed is fast during steel kind design positioning construction, efficiency high, while precision is also very high.
This method uses two pieces of complete corresponding locating templates first, will treat in crab-bolt two anchor holes of insertion in place, and two pieces position
Template is parallel and just right up and down, therefore crab-bolt can run through bilevel anchor hole.Using 2 principles of boning out, it is ensured that
Crab-bolt axis is in stabilization.Two pieces of location-plates are each fixed, and prevent it from rocking and are subjected to displacement.By all crab-bolt bottom surface pad water
It is flat so that all crab-bolt bottoms are respectively positioned in same horizontal plane, so that structure when simulating actual in place in plane foundation ditch.
Afterwards, two pieces of locating templates to level are adjusted respectively；Each crab-bolt is adjusted again, each crab-bolt is each perpendicular to locating template, that is, cause
Each crab-bolt is in vertical state, is now supported the welding of steel bar.All support steel bars are respectively positioned under locating template, are branch
Support steel bar is located at the lower section of the locating template of downside, it is to avoid support steel bar stops the dismounting of locating template.Support steel bar is connected to
Between adjacent two crab-bolts, relative position is maintained static between ensuring crab-bolt by supporting steel bar, and each anchor bolts turn into one
Overall structure.Afterwards from two pieces of locating templates of crab-bolt top dismounting, leveling nut is installed on each bolt, in each crab-bolt again
One piece of locating template is installed to be allowed to be placed on each leveling nut, the residing height of each leveling nut is adjusted, so as to reinstall
Locating template to level, fixing nut is finally installed again in the top of the locating template, by leveling nut and fixing nut
The fastening of upper and lower both sides is realized, one piece of fixation of locating template to reinstalling is realized.By manufactured by this method out
Anchor Bolts in Steel Column Bases positioning structure, can be prefabricated outside the venue according to construction drawing, only needs at the scene to prefabricated sill anchor, whole
Body copies survey to axis and absolute altitude, then be able to ensure that crab-bolt is in vertical state.Support steel bar is stayed in crab-bolt together to be carried out
Pour, single crab-bolt in casting process in the prior art can not only be avoided to be independently arranged easily causes displacement by cement mortar agitation
Situation, additionally it is possible to by supporting steel bar to replace part basis reinforcing bar, reducing the colligation consumption of follow-up reinforcement foundation.Compared to biography
If the positioning that cannot be stablized to crab-bolt using only one piece of locating template in system technology, while needing in the prior art at the scene
Crab-bolt is installed one by one, and perpendicularity correction is carried out to each crab-bolt, afterwards dismounting two-layer locating template and therebetween one by one again
Support member, even needs to carry out cutting operation during dismounting, while also needing to set total powerstation etc. in addition when correction is spent vertically
The complicated procedures of forming that row judges, the structure prepared by this method can in advance carry out prefabricated outside the venue, only need at the scene to prefabricated
Sill anchor, it is overall that survey is copied to axis and absolute altitude, also only need to dismantle one piece of locating template when dismantling afterwards, and without one by one
Dismounting two-layer locating template and support member therebetween, less with cutting action is carried out, largely simplify steel kind design just
On-site construction processes, raising efficiency of construction during position, reduction engineering cost, therefore the present invention has protrusion compared to prior art
Substantive distinguishing features and marked improvement.
Preferably, the support steel bar quantity for being connected between adjacent two crab-bolts in step (d) is N roots, N roots support steel bar
It is distributed up and down, while welding longitudinal rib between two neighbouring support steel bars.By many support steel bars, crab-bolt is improved
Between connective stability, it is ensured that crab-bolt constitute overall structure, will not be damaged by external force easily.It is fixed on by longitudinal rib
Between two support steel bars of lower distribution so that support steel bar collectively forms frame structure with longitudinal rib, can not only be more true
The Stability Analysis of Structures reliability protected between crab-bolt, additionally it is possible to after joints cement, reinforcing bar is collectively formed by supporting steel bar and longitudinal rib
Concrete structure so that more stronger than the mode more firm, structure that traditional binding reinforcement foundation is poured after the completion of pouring,
So as to significantly improve construction quality when Anchor Bolts in Steel Column Bases is constructed.
Preferably, when welding longitudinal rib, longitudinal rib is made perpendicular to support steel bar, and using full weld welding.Longitudinal rib and branch
Support steel bar is intersected vertically, and same effect is realized with minimum longitudinal rib consumption, realizes the effect of optimization cost.In traditional approach
Support member and crab-bolt between connected using spot welding, but because support steel bar, longitudinal rib are as fastener in this method
Together poured with crab-bolt, therefore welded from full weld mode, it is to avoid traditional spot welding there may be Joint Strength it is weak,
The problem of easy fracture, more ensures the resistance to overturning of structure.
Preferably, two pieces of locating templates in step (a) are respectively adopted fixture and fix.Two pieces of uses of locating template independence
Fixture is fixed, and is easy to two pieces of adjustment own level degree of locating template independence, it is to avoid cannot individually be adjusted after being linked to be entirety
Levelness.
Preferably, the locating template surface reinstalled in step (e), marks the cross searching point of the locating template.
It is easy to during follow-up use, is fast and accurately positioned by finding the position of cross searching point accurately, in preparation process
In use just to the later stage work ready in place so that efficiency when improving site operation.
Preferably, the locating template surface middle part reinstalled in step (e) opens up through hole, fixed laser hair in through hole
Injection device, beam direction that laser beam emitting device is launched downwards and with crab-bolt diameter parallel.Using laser direction is good, brightness
High the characteristics of, it is ensured that can have notable visible hot spot during centering, prepared by the efficiency during raising later stage use during centering
During use just to the later stage work ready in place so that efficiency when improving site operation.
Preferably, the extended line of the laser beam that laser beam emitting device sent is made to cross the center of the locating template reinstalled
Point.Because center position is difficult to find, it is easy to be marked on ground to be onstructed at the scene, therefore be also advantageous for by laser
The centering that emitter carries out locating template is in place.
Preferably, in two pieces of locating templates in step (a) the upper fixed level meter of any one piece, to secure level meter
That block locating template as the locating module reinstalled in step (e).So as to whole preparation process only needs two pieces of positioning
Template can be completed, and reduce material and cost.Simultaneously by level meter can quickly judge the block locating template whether water
It is flat, the service efficiency of this structure is further improved with this.
The present invention compared with prior art, has the following advantages and advantages：
1st, the preparation method of a kind of Anchor Bolts in Steel Column Bases positioning structure of the invention, by the steel kind design manufactured by this method out
Crab-bolt positioning structure, can be prefabricated outside the venue according to construction drawing, only needs at the scene to prefabricated sill anchor, overall to axle
Line and absolute altitude copy survey, then be able to ensure that crab-bolt is in vertical state.Support steel bar is stayed in crab-bolt and is together poured, no
Can only avoid single crab-bolt in casting process in the prior art from being independently arranged easily causes the situation of displacement by cement mortar agitation,
Can also be by supporting steel bar to replace part basis reinforcing bar, reducing the colligation consumption of follow-up reinforcement foundation.Compared to conventional art
If in the positioning that crab-bolt cannot be stablized using only one piece of locating template, while needing to pacify one by one at the scene in the prior art
Dress crab-bolt, and perpendicularity correction is carried out to each crab-bolt, dismantle two-layer locating template and support therebetween one by one again afterwards
Part, even needs to carry out cutting operation during dismounting, while also need to set total powerstation etc. in addition when correction is spent vertically being sentenced
Disconnected complicated procedures of forming, the structure prepared by this method can in advance carry out prefabricated outside the venue, only need to carry out looking for a centering at the scene
, also only need to dismantle one piece of locating template without again one by one carrying out crab-bolt degree correction vertically, when dismantling afterwards, and without
Two-layer locating template and support member therebetween are dismantled one by one, less with cutting action is carried out, largely simplify steel column
On-site construction processes, raising efficiency of construction when pin is in place, reduction engineering cost.
2nd, the preparation method of a kind of Anchor Bolts in Steel Column Bases positioning structure of the invention, by setting many support steel bars, improves anchor
Connective stability between bolt, it is ensured that crab-bolt constitutes overall structure, will not be damaged by external force easily.It is fixed on by longitudinal rib
Between two support steel bars being distributed up and down so that support steel bar collectively forms frame structure with longitudinal rib, can not only be more
Ensure the Stability Analysis of Structures reliability between crab-bolt, additionally it is possible to after joints cement, steel is collectively formed by supporting steel bar and longitudinal rib
Tendon concrete structure so that the mode poured than traditional binding reinforcement foundation after the completion of pouring more firmly, structure more
By force, so as to significantly improve construction quality when Anchor Bolts in Steel Column Bases is constructed.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the schematic flow sheet of the specific embodiment of the invention 1；
Fig. 2 is the schematic diagram of the prepared positioning structure out of the specific embodiment of the invention 1.
Mark and corresponding parts title in accompanying drawing：
The locating template that 1- is reinstalled, 2- crab-bolts, 3- leveling nuts, 4- support steel bars, 5- level meters, 6- longitudinal ribs,
7- fixing nuts, 8- through holes, 9- laser beam emitting devices.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
It is limitation of the invention.
Embodiment 1：
A kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure as shown in Figures 1 and 2, comprises the following steps：A () is two
Arrangement and the identical anchor hole of size are opened up on block locating template, two pieces of locating templates are adjusted to be distributed up and down and just
It is right, then each self-retaining；B () penetrates crab-bolt in two pieces of anchor holes of locating template one by one, and by the bottom surface pad water of all crab-bolts
It is flat；C () adjusts two pieces of locating templates to level respectively；Each crab-bolt is adjusted again, each crab-bolt is each perpendicular to locating template；D () exists
Support steel bar is connected between adjacent two crab-bolts, support steel bar is connected with crab-bolt spot welding；All support steel bars are respectively positioned on positioning mould
Under plate；E () installs leveling nut from two pieces of locating templates of crab-bolt top dismounting on each bolt, reinstall one again afterwards
Block locating template is on each leveling nut；Fixing nut is installed again in the top of the locating template.Adjacent two in step (d)
The support steel bar quantity connected between root crab-bolt is two, and two support steel bars are distributed up and down, while at neighbouring two
Longitudinal rib is welded between support steel bar.During welding longitudinal rib, make longitudinal rib perpendicular to support steel bar, and using full weld welding.Step
Suddenly two pieces of locating templates in (a) are respectively adopted fixture and fix.The locating template surface middle part reinstalled in step (e) is opened
If through hole, fixed laser emitter in through hole, the beam direction that laser beam emitting device is launched is downwards and flat with crab-bolt axis
OK.The extended line of the laser beam that laser beam emitting device sent is set to cross the central point of the locating template reinstalled.In step (a)
In any one piece of upper fixed level meter in two pieces of locating templates, to secure that block locating template of level meter as step
The locating module reinstalled in (e).Fig. 2 is shown using the prepared positioning structure schematic diagram out of this method.By this
The manufactured Anchor Bolts in Steel Column Bases positioning structure out of method, can be prefabricated outside the venue according to construction drawing, and it is right to only need at the scene
Prefabricated sill anchor, it is overall that survey is copied to axis and absolute altitude, then it is able to ensure that crab-bolt is in vertical state.Support steel bar is stayed
Together poured in crab-bolt, single crab-bolt is independently arranged easily by water in can not only avoiding casting process in the prior art
Mud agitation causes the situation of displacement, additionally it is possible to by supporting steel bar to replace part basis reinforcing bar, reducing follow-up reinforcement foundation
Colligation consumption.If compared to the positioning that cannot be stablized to crab-bolt using only one piece of locating template in conventional art, while existing
Having in technology needs to install crab-bolt one by one at the scene, and carries out perpendicularity correction to each crab-bolt, dismantles two-layer one by one again afterwards
Locating template and support member therebetween, even need to carry out cutting operation during dismounting, while being also needed to when correction is spent vertically
The complicated procedures of forming that total powerstation etc. is judged is set in addition, the structure prepared by this method can in advance be carried out outside the venue it is prefabricated,
Scene only needs to carry out looking for a centering, without carrying out degree correction vertically to crab-bolt one by one again, is also only needed when dismantling afterwards
One piece of locating template of dismounting, and without dismantling two-layer locating template and support member therebetween one by one, less with carrying out cutting work
Sequence, largely simplify steel kind design it is in place when on-site construction processes, improve efficiency of construction, reduce engineering cost, therefore
The present invention has prominent substantive distinguishing features and marked improvement compared to prior art.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. all should include
Within protection scope of the present invention.
Claims (8)
1. a kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure, it is characterised in that comprise the following steps：
A () opens up arrangement and the identical anchor hole of size on two pieces of locating templates, two pieces of locating templates are adjusted to
It is distributed up and down and just right, then each self-retaining；
B () penetrates crab-bolt in two pieces of anchor holes of locating template one by one, and by the bottom surface pad level of all crab-bolts；
C () adjusts two pieces of locating templates to level respectively；Each crab-bolt is adjusted again, each crab-bolt is each perpendicular to locating template；
D () connects support steel bar between adjacent two crab-bolts, support steel bar is connected with crab-bolt spot welding；The equal position of all support steel bars
Under locating template；
E () installs leveling nut from two pieces of locating templates of crab-bolt top dismounting on each bolt, reinstall one piece again afterwards and determine
Position template is on each leveling nut；
F () adjusts the locating template reinstalled to level by leveling nut, fixation is installed again in the top of the locating template
Nut.
2. a kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure according to claim 1, it is characterised in that step (d)
In between adjacent two crab-bolts connect support steel bar quantity be N roots, N roots support steel bar be distributed up and down, while in phase up and down
Longitudinal rib is welded between two adjacent support steel bars.
3. a kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure according to claim 2, it is characterised in that welding longitudinal direction
During muscle, make longitudinal rib perpendicular to support steel bar, and using full weld welding.
4. a kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure according to claim 1, it is characterised in that step (a)
In two pieces of locating templates fixture be respectively adopted fix.
5. the preparation method of a kind of Anchor Bolts in Steel Column Bases positioning structure according to claim 1, it is characterised in that in step
E the locating template surface reinstalled in (), marks the cross searching point of the locating template.
6. the preparation method of a kind of Anchor Bolts in Steel Column Bases positioning structure according to claim 1, it is characterised in that in step
E the locating template surface middle part reinstalled in () opens up through hole, fixed laser emitter in through hole, laser beam emitting device institute
The beam direction of transmitting downwards and with crab-bolt diameter parallel.
7. the preparation method of a kind of Anchor Bolts in Steel Column Bases positioning structure according to claim 6, it is characterised in that send out laser
The extended line of the laser beam that injection device is sent crosses the central point of the locating template reinstalled.
8. the preparation method of a kind of Anchor Bolts in Steel Column Bases positioning structure according to claim 1, it is characterised in that in step
Any one piece in (a) in two pieces of locating templates upper fixed level meter, to secure that block locating template of level meter as step
Suddenly the locating module reinstalled in (e).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710168234.0A CN106930406B (en) | 2017-03-21 | 2017-03-21 | A kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure |
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| CN201710168234.0A CN106930406B (en) | 2017-03-21 | 2017-03-21 | A kind of preparation method of Anchor Bolts in Steel Column Bases positioning structure |
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| CN106930406B CN106930406B (en) | 2019-03-01 |
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| CN109252674A (en) * | 2018-10-17 | 2019-01-22 | 北京市机械施工有限公司 | Huge column anchor bolt construction method |
| CN111395783A (en) * | 2020-04-25 | 2020-07-10 | 五冶集团上海有限公司 | Construction method for carrying out in-place fine correction and adjustment on bolt |
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| CN201433400Y (en) * | 2009-06-26 | 2010-03-31 | 北京国电华北电力工程有限公司 | Anchor rod foundation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252674A (en) * | 2018-10-17 | 2019-01-22 | 北京市机械施工有限公司 | Huge column anchor bolt construction method |
| CN111395783A (en) * | 2020-04-25 | 2020-07-10 | 五冶集团上海有限公司 | Construction method for carrying out in-place fine correction and adjustment on bolt |
| CN111395783B (en) * | 2020-04-25 | 2024-01-30 | 五冶集团上海有限公司 | Construction method for carrying out positioning fine adjustment on bolts |
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|---|---|
| CN106930406B (en) | 2019-03-01 |
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