CN107327023A - A kind of steel structure module installs installation method - Google Patents
A kind of steel structure module installs installation method Download PDFInfo
- Publication number
- CN107327023A CN107327023A CN201710610862.XA CN201710610862A CN107327023A CN 107327023 A CN107327023 A CN 107327023A CN 201710610862 A CN201710610862 A CN 201710610862A CN 107327023 A CN107327023 A CN 107327023A
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- China
- Prior art keywords
- steel structure
- module
- steel
- column
- base
- Prior art date
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- 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
-
- 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
- E04B2001/2415—Brackets, gussets, joining plates
-
- 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
- E04B2001/2418—Details of bolting
-
- 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
- E04B2001/2463—Connections to foundations
Abstract
A kind of steel structure module installs installation method, including step：Foundation bolt is installed in place；Casting concrete basis；Steel column seat lumps is set on the basis of；Make guider and the horizontal rectifying by jack up device of Level tune is carried out to base, be directed to device and be enclosed at the top of foundation bolt；Bolt hole is opened up on base；Steel column is welded on base；Steel column and steel structure girder are assembled into steel structure frame in precast plant, the mounting process pipeline in framework forms steel structure module；Module is transported to by installation site using transport vehicle；Check bolt hole and foundation bolt relative position, slowly declined module using vehicle hydraulic system is transported, the moment checks that guider is suitable for reading whether in bolt hole range, it is accurate it is in place after remove guider.The present invention had both been avoided that scene carried out reaming to steel column bolt of lower base hole and ensures construction quality, but using guider, module deadweight and horizontal rectifying by jack up device reach it is small move horizontally, realize to module quick and precisely purpose in place.
Description
Technical field
It is especially that a kind of steel structure module installs installation method the present invention relates to steel structure module installing area.
Background technology
In engineering practice, with carrying forward vigorously for " four the changing " by main contents of modularization, Pipe rack, technique mould
Blockization construction will gradually increase its market share.Current steel structure modularization construction mainly has following two Intrusive ways：
One is that first the floor installation of steel structure module is fixed in concrete foundation, after steel structure module transport is in place, then by steel
Post is fixed with tube chamber welds with base, and this scheme steel structure module installs in place more convenient, but Site Welding quantities is big, welds matter
Amount is whard to control；Two be that in precast plant steel column, steel structure girder, base are assembled into steel structure frame, and the root in framework in advance
According to design and installation technique for fixing pipeline, form steel structure module, it is then in place to the module integral installation, it is in place during only
Moved horizontally by module transportation vehicle accurate in place to realize, although this scheme can avoid scene to steel column bolt of lower base hole
Carry out reaming, effective guarantee construction quality, but the deformation due to steel structure module prefabrication process and error and basic pre-buried lower margin
The gap limitation of the deviation of bolt, bolt hole and foundation bolt, adds module transportation vehicle horizontal direction, especially perpendicular to vehicle body side
To being limited in scope for minute movement, cause program module installation difficulty in place larger, spiral shell is destroyed during also increasing in place
The risk of bolt.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of steel structure module and installs installation method, is both avoided that scene
Reaming, effective guarantee construction quality are carried out to steel column bolt of lower base hole, and is conducted oneself with dignity and horizontal jacking using guider, module
Deviation correcting device reach it is small move horizontally, realize the purpose quick and precisely in place to steel structure module.
The technical solution of the present invention is to provide a kind of steel structure module and installs installation method, comprises the following steps：
(1) some foundation bolts are installed in place；
(2) casting concrete basis, it is ensured that the thread segment of foundation bolt exposes the top surface of concrete foundation；
(3) some steel columns seat lumps are set on the top surface of concrete foundation, and each steel column seat lumps is that top is small, bottom is big
Bucking ladder structure；
(4) make guider, the guider includes conical hollow section and open circles shell of column, conical hollow section it is big straight
Footpath end at the top of open circles shell of column with being connected, and the intracavity diameter of open circles shell of column is slightly larger than the external diameter of foundation bolt, after the completion of, by sky
Heart cylindrical section is enclosed on the thread segment at the top of foundation bolt；
Production technique rectifying by jack up device, the horizontal rectifying by jack up device includes jack, l-shaped member and installed in mixed
Crossbeam on solidifying earth foundation side wall, the l-shaped member is on crossbeam, and the cylinder body of the jack is very heavy in l-shaped member
The push rod on top is inwardly；
(5) according to design requirement, blanking is carried out to base, and open up the spiral shell that some confession foundation bolts are passed through in its surface
Keyhole, after foundation bolt is inserted into bolt hole, the push rod can be withstood on the side wall of base, to promote base to enter water-filling
Flat fine setting；
(6) according to design requirement, blanking is carried out to steel column, then its bottom is welded on base top surface；
(7) some stiffeners are welded in the border of steel column and base connecting portion, steel column and base is turned into an entirety,
Steel column and steel structure girder are assembled into steel structure frame in precast plant, and according to design and installation technique for fixing pipeline in framework, most
End form is into steel structure module；
(8) steel structure module that step (7) completes is transported to erecting bed using module transportation vehicle, utilizes module
Steel structure module integral jacking is made base be higher than the top of foundation bolt, according to steel by the hydraulic jacking system of transport vehicle itself
Module is transported to installation site by the installation center line of construction module；
(9) relative position of bolt hole and pre-embedded anchoring bolts is checked, after contraposition, steel structure module and modular transportation is removed
The fixing device of car, is slowly declined steel structure module using the hydraulic system of module transportation vehicle, and the moment checks during decline
Guider it is suitable for reading whether within the scope of bolt hole, until entirely accurate is in place；
(10) guider is removed.
A kind of steel structure module of the present invention installs installation method, wherein, the inner chamber of the open circles shell of column is set
There is the internal thread matched with the thread segment at the top of foundation bolt.
A kind of steel structure module of the present invention installs installation method, wherein, the guider uses steel pipe manufacturing,
Its wall thickness is at least 2mm.
After above structure, compared with prior art, a kind of steel structure module of the invention install installation method have with
Lower advantage：Unlike the prior art, in advance an entirety is made in steel column and base by the present invention, and steel column is with steel structure girder prefabricated
Factory is assembled into steel structure frame, and according to design and installation technique for fixing pipeline in framework, forms steel structure module；Then pass through
Module transportation vehicle transports the steel structure module to erecting bed；Finally utilize deadweight and the water of the guiding, module of guider
Flat-top rises deviation correcting device to realize the horizontal micro-shifting of integral module and accurate in place.As can be seen here, the present invention both avoids scene
Reaming and welding sequence, effective guarantee construction quality are carried out to steel column bolt of lower base hole, guider, module deadweight are make use of again
And horizontal rectifying by jack up device reaches and the small of module is moved horizontally, and then realize steel structure module mesh quick and precisely in place
's.It is enclosed in addition, being directed to device on the thread segment at the top of pre-embedded anchoring bolts, can effectively protects the thread segment in steel construction mould
It is without damage during block is in place.
The inner chamber of open circles shell of column is provided with the internal thread with the thread segment matching of foundation bolt, can make leading for guider
To more accurately and reliably, it is to avoid guider coming off during steel structure module is in place and deflection.
Wall thickness is at least 2mm guider in the case of effectively save cost, it is ensured that the intensity of itself.
Brief description of the drawings
Fig. 1 is structural representation when a kind of steel structure module of the invention installs installation steel structure module in installation method.
Embodiment
Installation method is installed to a kind of steel structure module of the invention with reference to the accompanying drawings and detailed description and makees further
Describe in detail：
As shown in figure 1, in this embodiment, a kind of steel structure module of the invention installs installation method, including such as
Lower step：
(1) some foundation bolts 22 are installed in place；
(2) casting concrete basis 21, it is ensured that the thread segment of foundation bolt 22 exposes the top surface of concrete foundation 21；
(3) some steel columns seat lumps 20 are set on the top surface of concrete foundation 21, each steel column seat lumps 20 be top it is small,
The big bucking ladder structure in bottom；
(4) guider 30 is made, the guider 30 includes conical hollow section 301 and open circles shell of column 302, hollow cone
The height of shape section 301 is slightly less than the height of open circles shell of column 302, the larger diameter end and open circles shell of column 302 of conical hollow section 301
Top is connected, and the intracavity diameter of open circles shell of column 302 is slightly larger than the external diameter of foundation bolt 22, after the completion of, by open circles shell of column 302
On the thread segment for being enclosed on the top of foundation bolt 22；
Production technique rectifying by jack up device 40, the horizontal rectifying by jack up device 40 include jack 43, l-shaped member 42 and
Crossbeam 41 on the side wall of concrete foundation 21, l-shaped member 42 is on crossbeam 41, and the cylinder body 44 of jack 43 is mounted in L
On shape component 42, the push rod 45 of jack 43 is inwardly；
(5) according to design requirement, blanking is carried out to base 12, and opens up some confession foundation bolts 22 in its surface passing through
Bolt hole 13, after foundation bolt 22 is inserted into bolt hole 13, the push rod 45 can be withstood on the side wall of base 12, with
Base 12 is promoted to carry out WidFin；
(6) according to design requirement, blanking is carried out to steel column 10, then its bottom is welded on the top surface of base 12；
(7) some stiffeners 11 are welded in the border of steel column 10 and the connecting portion of base 12, stiffener 11 can ensure steel
The rigidity of post 10, makes steel column 10 and base 12 turn into an entirety, and steel column 10 is assembled into steel construction with steel structure girder in precast plant
Framework, and steel structure module is ultimately formed according to design and installation technique for fixing pipeline in framework；
(8) steel structure module that step (7) completes is transported to erecting bed using module transportation vehicle, utilizes module
Steel structure module integral jacking is made base 12 be higher than the top of foundation bolt 22, pressed by the hydraulic jacking system of transport vehicle itself
Module is transported to installation site according to the installation center line of steel structure module；
(9) bolt hole 13 and the relative position of pre-embedded anchoring bolts 22 are checked, after contraposition, steel structure module and module is removed
The fixing device of transport vehicle, is slowly declined steel structure module using the hydraulic system of module transportation vehicle, the moment during decline
The suitable for reading whether within the scope of bolt hole 13 of guider 30 is checked, until entirely accurate is in place, i.e. pre-embedded anchoring bolts
In 22 insertion bolts hole 13, and base 12 is close on steel column seat lumps 20；
(10) guider 30 is removed.
The installed height mark determination that the top mark coca of above-mentioned steel column seat lumps 20 is supported according to steel column 10, the number of steel column seat lumps 20
Measure according to the weight of the support of steel column 10 to determine, steel column seat lumps 20 must be completed and must be fulfilled for before the support of steel column 10 is installed
Intensity requirement, these data can be calculated by existing formula, therefore not repeated herein.Bucking ladder structural steel column base lumps 20
Setting avoid the base 12 in steel structure module and the top surface bump contact of concrete foundation 21, in other words, as long as
The positioning requirements of steel structure module can be met by ensureing the accuracy of manufacture of the less steel column seat top surface of lumps 20 of area, save opposite
The larger top surface of concrete foundation 21 of product carries out the process of specially treated, so as to greatly save production cost and improve operation effect
Rate.The total height of guider 30 exposes the height of base 12 to determine according to pre-embedded anchoring bolts 22, to ensure steel construction mould
After block is installed in place, guider 30 can be removed freely.
The inner chamber of open circles shell of column 302 is provided with the internal thread matched with the thread segment at the top of foundation bolt 22, can make to lead
To device 30 guiding more accurately and reliably, it is to avoid the coming off during steel structure module is in place of guider 30 and partially
Tiltedly, guider 30 uses steel pipe manufacturing, and its wall thickness is at least 2mm.Certainly, the inner chamber of open circles shell of column 302 can not also be set
Internal thread, is directly a smooth inner chamber, in use, being sleeved on the thread segment at the top of foundation bolt 22.
Steel column 10, stiffener 11 and base 12 are welded into an entirety by workman in advance, and steel column 10 is with steel structure girder pre-
Factory processed is assembled into steel structure frame, and according to design and installation technique for fixing pipeline in framework, forms steel structure module；Then lead to
Module transportation vehicle is crossed to transport the steel structure module to erecting bed；Finally utilize the deadweight of the guiding, module of guider 30
And horizontal rectifying by jack up device 40 realizes the horizontal micro-shifting of integral module and accurate in place.Level is being carried out to steel structure module
During fine setting, when steel column 10 deforms displacement, l-shaped member 42 and jack 43 can be set in the opposite direction of displacement,
Implement to rectify a deviation using jack 43；If both direction all shifts, both direction can simultaneously be rectified a deviation, coordinate guider
30 guarantee modules are smoothly implemented in place.
The present invention uses the installation of module transportation vehicle in place suitable for the in place and steel structure module that lifts of Steel for Large Steel Column.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
Various modifications and improvement that case is made, all should fall within the scope of protection of the present invention.
Claims (3)
1. a kind of steel structure module installs installation method, it is characterised in that comprise the following steps：
(1) some foundation bolts (22) are installed in place；
(2) casting concrete is basic (21), it is ensured that the thread segment of foundation bolt (22) exposes the top surface of concrete foundation (21)；
(3) some steel column seat lumps (20) are set on the top surface of concrete foundation (21), and each steel column seat lumps (20) is top
The big bucking ladder structure in small, bottom；
(4) guider (30) is made, the guider (30) includes conical hollow section (301) and open circles shell of column (302), institute
Larger diameter end and open circles shell of column (302) top for stating conical hollow section (301) are connected, the open circles shell of column (302) it is interior
Chamber diameter is slightly larger than the external diameter of foundation bolt (22), after the completion of, open circles shell of column (302) is enclosed at the top of foundation bolt (22)
On thread segment；
Production technique rectifying by jack up device (40), the horizontal rectifying by jack up device (40) includes jack (43), l-shaped member (42)
And the crossbeam (41) on the wall of concrete foundation (21) side, the l-shaped member (42) is on crossbeam (41), and described thousand
The cylinder body (44) on jin top (43) is in l-shaped member (42), and the push rod (45) of jack (43) is inwardly；
(5) according to design requirement, blanking is carried out to base (12), and opens up some confession foundation bolts (22) in its surface passing through
Bolt hole (13), when foundation bolt (22) be inserted into bolt hole (13) it is interior after, the push rod (45) can withstand on base (12)
Side wall on, with promote base (12) carry out WidFin；
(6) according to design requirement, blanking is carried out to steel column (10), then its bottom is welded on base (12) top surface；
(7) some stiffeners (11) are welded in the border of steel column (10) and base (12) connecting portion, makes steel column (10) and base
(12) entirety is turned into, steel column is assembled into steel structure frame with steel structure girder in precast plant, and pacifies in framework according to design
Technique for fixing pipeline is filled, steel structure module is ultimately formed；
(8) steel structure module that step (7) completes is transported to erecting bed using module transportation vehicle, utilizes modular transportation
Steel structure module integral jacking is made base (12) be higher than the top of foundation bolt (22), pressed by the hydraulic jacking system of car itself
Module is transported to installation site according to the installation center line of steel structure module；
(9) bolt hole (13) and the relative position of pre-embedded anchoring bolts (22) are checked, after contraposition, steel structure module and module is removed
The fixing device of transport vehicle, is slowly declined steel structure module using the hydraulic system of module transportation vehicle, the moment during decline
The suitable for reading whether within the scope of bolt hole (13) of guider (30) is checked, until entirely accurate is in place；
(10) guider (30) is removed.
2. a kind of steel structure module according to claim 1 installs installation method, it is characterised in that：The open circles shell of column
(302) inner chamber is provided with the internal thread matched with the thread segment at the top of foundation bolt (22).
3. a kind of steel structure module according to claim 2 installs installation method, it is characterised in that：The guider
(30) steel pipe manufacturing is used, its wall thickness is at least 2mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710610862.XA CN107327023A (en) | 2017-07-25 | 2017-07-25 | A kind of steel structure module installs installation method |
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| CN201710610862.XA CN107327023A (en) | 2017-07-25 | 2017-07-25 | A kind of steel structure module installs installation method |
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Cited By (13)
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| CN108612380A (en) * | 2018-05-08 | 2018-10-02 | 四川石油天然气建设工程有限责任公司 | The construction method of installation of large-scale petroleum natural gas processing tower and pylon |
| CN108626533A (en) * | 2018-05-08 | 2018-10-09 | 四川石油天然气建设工程有限责任公司 | A kind of large-scale petroleum natural gas processing tower installation method |
| CN110107114A (en) * | 2019-05-21 | 2019-08-09 | 杭州圣基建筑特种工程有限公司 | A kind of lateral Displacement method for brick masonry structure building lifting inclination-correcting |
| CN111119260A (en) * | 2019-12-26 | 2020-05-08 | 杭州敦固建筑特种工程有限公司 | Deviation rectifying method applying dynamic monitoring and dynamic reinforcement |
| CN111411784A (en) * | 2020-04-26 | 2020-07-14 | 中国二十二冶集团有限公司 | Positioning and tensioning device for mounting steel structural member |
| CN111576471A (en) * | 2020-05-31 | 2020-08-25 | 福州大学 | Assembled energy-consuming hollow sandwich concrete-filled steel tube column base and construction method thereof |
| CN112459506A (en) * | 2020-11-30 | 2021-03-09 | 中建科工集团有限公司 | Construction tool for mounting plug-in steel column |
| CN112550595A (en) * | 2020-11-24 | 2021-03-26 | 沪东中华造船(集团)有限公司 | Method for quickly positioning and installing dock boarding ladder |
| CN112696034A (en) * | 2020-12-18 | 2021-04-23 | 中国二十冶集团有限公司 | Method for installing and accurately positioning high-pressure kettle |
| CN112726824A (en) * | 2020-12-30 | 2021-04-30 | 湖南鸿云杭萧绿建科技有限公司 | Mounting and hoisting method for assembled steel structure building steel column node |
| CN113653093A (en) * | 2021-08-26 | 2021-11-16 | 江苏筑港建设集团有限公司 | Height-adjustable steel structure foundation and construction method |
| CN114837214A (en) * | 2022-06-08 | 2022-08-02 | 中建安装集团有限公司 | Temporary foundation for pre-assembling steel frame module |
| CN115030522A (en) * | 2022-06-30 | 2022-09-09 | 上海市机械施工集团有限公司 | Construction method of large steel structure |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612380A (en) * | 2018-05-08 | 2018-10-02 | 四川石油天然气建设工程有限责任公司 | The construction method of installation of large-scale petroleum natural gas processing tower and pylon |
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| CN110107114A (en) * | 2019-05-21 | 2019-08-09 | 杭州圣基建筑特种工程有限公司 | A kind of lateral Displacement method for brick masonry structure building lifting inclination-correcting |
| CN111119260A (en) * | 2019-12-26 | 2020-05-08 | 杭州敦固建筑特种工程有限公司 | Deviation rectifying method applying dynamic monitoring and dynamic reinforcement |
| CN111411784A (en) * | 2020-04-26 | 2020-07-14 | 中国二十二冶集团有限公司 | Positioning and tensioning device for mounting steel structural member |
| CN111576471A (en) * | 2020-05-31 | 2020-08-25 | 福州大学 | Assembled energy-consuming hollow sandwich concrete-filled steel tube column base and construction method thereof |
| CN112550595A (en) * | 2020-11-24 | 2021-03-26 | 沪东中华造船(集团)有限公司 | Method for quickly positioning and installing dock boarding ladder |
| CN112459506A (en) * | 2020-11-30 | 2021-03-09 | 中建科工集团有限公司 | Construction tool for mounting plug-in steel column |
| CN112696034A (en) * | 2020-12-18 | 2021-04-23 | 中国二十冶集团有限公司 | Method for installing and accurately positioning high-pressure kettle |
| CN112696034B (en) * | 2020-12-18 | 2022-07-08 | 中国二十冶集团有限公司 | Method for installing and accurately positioning high-pressure kettle |
| CN112726824A (en) * | 2020-12-30 | 2021-04-30 | 湖南鸿云杭萧绿建科技有限公司 | Mounting and hoisting method for assembled steel structure building steel column node |
| CN112726824B (en) * | 2020-12-30 | 2022-06-28 | 湖南鸿云杭萧绿建科技有限公司 | Assembled steel structure building steel column joint structure and installation method |
| CN113653093A (en) * | 2021-08-26 | 2021-11-16 | 江苏筑港建设集团有限公司 | Height-adjustable steel structure foundation and construction method |
| CN114837214A (en) * | 2022-06-08 | 2022-08-02 | 中建安装集团有限公司 | Temporary foundation for pre-assembling steel frame module |
| CN114837214B (en) * | 2022-06-08 | 2023-11-17 | 中建安装集团有限公司 | Temporary foundation for pre-assembling steel frame modules |
| CN115030522A (en) * | 2022-06-30 | 2022-09-09 | 上海市机械施工集团有限公司 | Construction method of large steel structure |
| CN115030522B (en) * | 2022-06-30 | 2024-04-26 | 上海市机械施工集团有限公司 | Construction method of large steel structure |
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Application publication date: 20171107 |