CN116717061A - Embedded rapid installation construction method for assembled steel structure stairway - Google Patents
Embedded rapid installation construction method for assembled steel structure stairway Download PDFInfo
- Publication number
- CN116717061A CN116717061A CN202310538877.5A CN202310538877A CN116717061A CN 116717061 A CN116717061 A CN 116717061A CN 202310538877 A CN202310538877 A CN 202310538877A CN 116717061 A CN116717061 A CN 116717061A
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- Prior art keywords
- roof
- stair
- stairs
- steel
- construction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 141
- 239000010959 steel Substances 0.000 title claims abstract description 141
- 238000009434 installation Methods 0.000 title claims abstract description 74
- 238000010276 construction Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 23
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F21/00—Implements for finishing work on buildings
- E04F21/26—Implements for finishing work on buildings for mounting staircases, e.g. tools for marking steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The application discloses an embedded quick installation construction method of an assembled steel structure stair, which comprises the steps of installing two roof beams above a stair installation space before building roof construction, installing a plurality of section steel beams between the two roof beams, and installing lifting appliances on the section steel beams, wherein the lifting appliances can move along the section steel beams; then installing a pouring template of the building roof, and constructing the building roof; after the construction of the roof plate is completed, lifting the stairs by using a lifting appliance, manually assisting in placing two ends of the stairs on corresponding installation positions on floors at two sides of a stair installation space, and fixing the two ends of the stairs; hoisting the rest stairs to the corresponding positions sequentially by adopting the same method; and after all the stairways are hoisted, the hoisting tool is dismantled. The application has the effect of being convenient for lifting stairs.
Description
Technical Field
The application relates to the technical field of steel structure stair hoisting, in particular to an embedded rapid installation construction method for an assembled steel structure stair.
Background
With the development of society, the design of structures of various kinds of buildings is higher and higher, and the appearance of new structures often brings about challenges in terms of manufacturing or installation. In the building of relevant design, reserve the stair installation space that has multilayer building height in the below of roof board, there is bearing structure such as stand and crossbeam in the stair installation space, and the multilayer of design is from down to upwards laying the stair setting by outside-in dislocation in proper order, and the stair setting of upper strata is more inside, and the stair adopts steel construction prefabrication moreover, need hoist and mount again after building body engineering construction is accomplished. However, after the construction of the main building engineering is completed, the roof blocks the use of the crane, so that the lifting of the stairs is difficult.
With respect to the related art in the above, the applicant believes that the following drawbacks exist: after the construction of the main building engineering is completed, the stairs are difficult to hoist.
Disclosure of Invention
In order to facilitate lifting of stairs, the application provides an embedded rapid installation construction method for assembled steel structure stairs.
The application provides an embedded rapid installation construction method for an assembled steel structure stair, which adopts the following technical scheme:
an embedded quick installation construction method of an assembled steel structure stair comprises the following steps:
before the construction of the roof, two roof beams are installed above the stair installation space, a plurality of section steel beams are installed between the two roof beams, and lifting devices are installed on the section steel beams and can move along the section steel beams; then installing a pouring template of the building roof, and constructing the building roof;
after the construction of the roof plate is completed, lifting the stairs by using a lifting appliance, manually assisting in placing two ends of the stairs on corresponding installation positions on floors at two sides of a stair installation space, and fixing the two ends of the stairs; hoisting the rest stairs to the corresponding positions sequentially by adopting the same method;
and after all the stairways are hoisted, the hoisting tool is dismantled.
By adopting the technical scheme, as the stair installation space is not provided with the upright posts, the cross beams and other supporting structures, the roof plate above the stair installation space is required to be provided with the cross beams and other structures for supporting, the roof above the stair installation space is provided with the roof cross beams and the section steel beams, the lifting appliance is arranged on the section steel beams, the roof cross beams and the section steel beams are utilized for lifting the stairs, the lifting of the stairs is not influenced by the roof plate, the stairs can be installed rapidly, and the installation efficiency of the stairs is improved.
Preferably, during building main body construction, the positions of the two ends of the stairs aligned on the floors at the two sides of the stair installation space are respectively provided with the steel beams as cross beams of the floors, after the stairs are hoisted in place, the two ends of the stairs are respectively welded with the steel beams, then the floor plates of the floors at the two sides of the stair installation space are constructed, and the two ends of the stairs are covered by the floor plates.
By adopting the technical scheme, as the top plate beam and the section steel beam are used as supports for lifting the stairs, the top plate beam and the section steel beam can be damaged when the load of the top plate beam and the section steel beam exceeds a certain value, the length of the stairs is shortened to reduce the load of the top plate beam and the section steel beam, however, the length of the stairs is shortened to reduce the lap joint length of the stairs and the floor slab, so that the stability of the stairs is reduced; in the construction process of the main building body, steel beams are arranged on floors at two sides of a stair installation space to serve as cross beams, and after the stairs are hoisted, the stairs and the steel beams are welded together, so that the stability of the stairs is improved; through regard as the crossbeam with the girder steel of installing on the floor of the both sides in stair installation space, can reduce the length of stair to the setting value and can not influence the stability after the stair installation, in addition, because the stair installation space is less, the hoist and mount of the stair of being convenient for behind the stair reduction.
Preferably, the roof beam is the girder steel, and shaped steel roof beam and roof beam welding to the top installation steel sheet of roof beam and shaped steel roof beam is as the pouring template of the roof of stair installation space's top, and steel sheet welds shaped steel beam and roof beam respectively, demolishs the hoist after, carries out rust-resistant treatment to roof beam, longeron and steel sheet.
Through adopting above-mentioned technical scheme, roof crossbeam can make things convenient for the hoist and mount of roof crossbeam for the girder steel to make things convenient for the installation of shaped steel roof beam, shaped steel roof beam and roof crossbeam welding, the fastness is good, and the bearing capacity is big, and the steel sheet is as the pouring template of roof, does not need to set up the scaffold frame in stair installation space department and carries out the construction of roof, reduces the work load of roof construction, and the steel sheet is not demolishd after the roof is pour and is accomplished, continues to provide certain holding power to the roof, improves the connection stability between shaped steel roof beam and the roof crossbeam simultaneously.
Preferably, the tops of the section steel beam and the roof beam are respectively welded with connecting steel bars, the connecting steel bars are avoided when the steel plates are installed, and the roof steel bars and the connecting steel bars are bound and fixed when the roof plate is constructed.
Through adopting above-mentioned technical scheme, it is fixed through connecting reinforcement and roof reinforcement ligature, improve the bearing capacity of shaped steel roof beam and roof crossbeam for shaped steel beam and roof crossbeam can bear bigger load, reduce the risk that shaped steel beam and roof crossbeam warp when stair hoist and mount.
Preferably, the lifting appliance is provided with two sets, the two sets of lifting appliances are respectively arranged on two different section steel beams, and the lifting appliance of each section of stairs is lifted by adopting the two sets of lifting appliances.
Through adopting above-mentioned technical scheme, adjust the height that two sets of hoist hung the stair respectively, can adjust the angle of stair, in the in-process that the stair risen for the stair is close to vertically, after the stair risees to the settlement height, the one end of lowering the stair first, the stair end of lowering is rotatory to descend to enter into in the floor, the stair of being convenient for gets into the floor, and the same method is adopted in putting the other end of stair into the floor of opposite side, accomplishes the location of stair, convenient and fast.
Preferably, the lifting appliance comprises an electric vehicle and an electric hoist, wherein the electric vehicle is arranged on the section steel beam and can move along the section steel beam, and the electric hoist is arranged on the electric vehicle.
Through adopting above-mentioned technical scheme, the electric motor car drives electric block and hangs along the shaped steel roof beam removal to drive the stair and remove the required position, avoid the interference of the stair of installing earlier to the hoist and mount stair afterwards.
Preferably, after all the stairs are hoisted, a construction platform is erected by depending on the building main body and the installed stairs, and workers dismantle the hoisting tool on the construction platform.
Through adopting above-mentioned technical scheme, after the stair hoist and mount are accomplished, the stair on upper strata is nearer with the distance of roof, and the stair of installing has higher bearing capacity moreover, relies on stair and building main part can reduce the work load of building construction platform.
Preferably, the distance between the stairs and the building bodies at two sides of the stair installation space is 20cm-50cm in the process of lifting the stairs by the lifting appliance.
By adopting the technical scheme, the stair is easy to collide when the distance between the stair and the building main bodies at the two sides of the stair installation space is small, and the stair is not easy to pull into the stair into the floor when the distance between the stair and the building main bodies at the two sides of the stair installation space is large.
In summary, the present application includes at least one of the following beneficial technical effects:
1. because the stair installation space has no supporting structures such as upright posts and cross beams, the roof plate above the stair installation space is required to be provided with the structures such as the cross beams for supporting, the roof plate cross beams and the section steel beams are arranged for supporting the roof above the stair installation space, the lifting appliance is arranged on the section steel beams, the roof plate cross beams and the section steel beams are utilized for lifting the stair, the lifting of the stair is not influenced by the roof plate, the stair can be quickly installed, and the installation efficiency of the stair is improved;
2. in the construction process of the main building body, steel beams are arranged on floors at two sides of a stair installation space to serve as cross beams, and after the stairs are hoisted, the stairs and the steel beams are welded together, so that the stability of the stairs is improved; through regard as the crossbeam with the girder steel of installing on the floor of the both sides in stair installation space, can reduce the length of stair to the setting value and can not influence the stability after the stair installation, in addition, because the stair installation space is less, the hoist and mount of the stair of being convenient for behind the stair reduction.
Drawings
Fig. 1 is a schematic structural view of a building body according to an embodiment of the present application.
Fig. 2 is another schematic structural view of a building body according to an embodiment of the present application.
Fig. 3 is a schematic view of a stair lift according to an embodiment of the present application.
Fig. 4 is a schematic structural view of the stair hoisting according to the embodiment of the application.
Reference numerals illustrate:
1. a building main body; 11. a roof panel; 12. a roof rail; 13. a section steel beam; 14. a steel plate; 15. a steel beam; 2. a lifting appliance; 3. stairs.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
The embodiment of the application discloses an embedded rapid installation construction method for an assembled steel structure stair.
An embedded quick installation construction method of an assembled steel structure stair comprises the following steps:
referring to fig. 1 and 2, the building body 1 is constructed, and the beams aligned with the installation positions of both ends of the designed stairway 3 on each floor of the building body 1 on both sides of the designed stairway installation space are replaced with steel beams 15. When the building main body 1 is constructed to the roof plate 11, two mutually parallel roof beams 12 are arranged above the stair installation space, the roof beams 12 are steel beams 15, the two roof beams 12 span the upper part of the stair installation space, and the roof beams 12 and the main beams of the building main bodies 1 at the two sides of the stair installation space are poured together and supported on the main beams of the building main bodies 1 at the two sides of the stair installation space. A plurality of mutually parallel shaped steel beams 13 are arranged between the two top plate beams 12, the shaped steel beams 13 are perpendicular to the top plate beams 12, two top plate beams 12 are welded at two ends of each shaped steel beam 13, a lifting appliance 2 is arranged on each shaped steel beam 13, and the lifting appliance 2 can move along the shaped steel beams 13. The top of the shaped steel beam 13 and the top of the roof beam 12 are respectively welded with connecting steel bars, a steel plate 14 is installed above the roof beam 12 and the shaped steel beam 13 to serve as a pouring template of the roof slab 11 above the stair installation space, the connecting steel bars are avoided when the steel plate 14 is installed, the shaped steel beam 13 and the roof beam 12 are respectively welded with the steel plate 14, in addition, after the steel plate 14 is installed, the connecting steel bars are welded at the top of the steel plate 14, when the roof slab 11 is constructed, the steel bars of the roof slab 11 are fixedly bound with the connecting steel bars, then the roof slab 11 concrete is poured, the connecting steel bars connect the shaped steel beam 13, the roof beam 12, the steel plate 14 and the roof slab 11 into a whole, and the bearing capacity of the shaped steel beam 13 and the roof beam 12 is improved, so that the risk of hoisting the stair 3 by adopting the shaped steel beam 13 and the roof beam 12 as stress structures in the follow-up is reduced. In addition, the stability of the steel plate 14 can be improved by binding the connecting steel bars with the steel bars of the building roof 11, and after the steel bars of the building roof 11 are bound, workers can conveniently walk above the steel plate 14, so that concrete can be conveniently poured.
Referring to fig. 3 and 4, after the strength of the roof slab 11 meets the design requirement, the stairway 3 is hoisted, the bottommost stairway 3 is hoisted first, and other stairways 3 are hoisted sequentially from bottom to top. The specific hoisting process comprises the following steps: the stair 3 is firstly transported to the ground below the outer end of the profiled steel beam 13, then the stair 3 is bound by using the steel wire rope according to the designed binding position, and preferably, a plurality of lifting lugs for binding the steel wire rope are welded on the stair 3, so that the steel wire rope binding is ensured to be firm and reliable. And then controlling the lifting hook of the lifting appliance 2 to descend, connecting the hook of the lifting appliance 2 with a steel wire rope, starting the lifting appliance 2 to lift the stair 3 to a position 20cm away from the ground, and keeping the stair 3 stable at the position. And (3) measuring whether the angle of the stair 3 is within the designed range, if not, controlling the lifting appliance 2 to lower the stair 3 onto the ground, readjusting the position of the steel wire rope, and restarting the lifting appliance 2 to lift the stair 3 20cm away from the ground until the angle of the stair 3 is within the designed range. Then start hoist 2 with stair 3 handling to the height of design, the manual work pulls in stair 3's low end towards the floor on the floor of stair installation space both sides, and the hoist 2 is controlled again and stair 3 slowly descends, and the manual work assists the location with stair 3's low end, until place stair 3's low end on the corresponding mounted position on the floor. Then, workers on the floors on the opposite sides pull the high ends of the stairs 3 into the floors, then the lifting appliance 2 is controlled to slowly descend the stairs 3, and the high ends of the stairs 3 are positioned manually in an auxiliary mode until the high ends of the stairs 3 are placed on corresponding installation positions on the floors. After the stair 3 is placed in place, the two ends of the stair 3 are respectively welded with the steel beams 15 in the floors at the two sides of the stair installation space, so that the stair 3 is fixedly connected with the steel beams 15 at the two sides, the stability of the stair 3 is improved, and the lifting of the stair 3 is completed. The rest of the stairs 3 are hoisted to the corresponding positions in turn by adopting the same method.
After all the stairs 3 are hoisted, a construction platform is erected by depending on the building main body 1 and the uppermost stairs 3, workers dismantle the lifting appliance 2 on the construction platform, and rust prevention treatment is carried out on the roof beam 12, the longitudinal beam and the steel plate 14.
After the lifting of the stairs 3 is completed, floor plates of floors on two sides of the stair installation space are poured, and the floor plates cover two ends of the stairs 3 and the steel beams 15, so that the stability of the stairs 3 can be improved, and two ends of the stairs 3 can be hidden, so that the stairs 3 are more attractive.
It should be noted that, the method for measuring whether the angle of the stair 3 is within the designed range in this embodiment is as follows: the gaps between the two ends of the stairs 3 and the building main bodies 1 at the two sides of the stair installation space are measured by using the ruler respectively, if the gaps at the two ends of the stairs 3 are all in the range of 20-50cm, the angle of the stairs 3 is indicated to be in the designed range, and if the gap at least one end of the stairs 3 is not in the range of 20-50cm, the angle of the stairs 3 is indicated to be not in the designed range. When the gap between the stairs 3 and the building main body 1 at one side of the stair installation space is smaller than 20cm, the stairs 3 are easy to collide with the building main body 1 in the process of lifting the stairs 3, and the risk of damaging the stairs 3 or damaging the building main body 1 is high. When the gap between the stairs 3 and the building main body 1 at one side of the stair installation space is larger than 50cm, workers are not easy to pull the stairs 3 into floors, and the operation is inconvenient.
In another embodiment, two sets of lifting devices 2 are arranged, the two sets of lifting devices 2 are respectively arranged on two different section steel beams 13, each section of stair 3 is lifted by the two sets of lifting devices 2, the two sets of lifting devices 2 are respectively connected with two ends of the stair 3, the height of the stair 3 can be adjusted by adjusting the height of the stair 3 lifted by the two sets of lifting devices 2 during lifting, the stair 3 is not required to be pulled manually, and the two ends of the lifting devices 2 can be placed into floors by controlling the height of the stair 3 lifted by the two sets of lifting devices 2, so that the operation is convenient. The lifting appliance 2 comprises an electric vehicle and an electric hoist crane, the electric vehicle is mounted on the section steel beam 13 and can move along the section steel beam 13, the electric hoist crane is mounted on the electric vehicle, and the electric vehicle drives the electric hoist crane to move along the section steel beam 13, so that the stair 3 is driven to move to a required position, and interference of the stair 3 lifted firstly to the stair 3 lifted later is avoided.
The implementation principle of the embedded quick installation construction method of the assembled steel structure stairway provided by the embodiment of the application is as follows: the roof beam of this embodiment and shaped steel roof 13 roof crossbeam 12 and shaped steel roof 13 regard as the bearing structure of roof 11 of stair installation space top, regard as the bearing structure of hoist and mount stair 3 again, hoist 2 installs on shaped steel roof 13, the hoist and mount of stair 3 relies on current structure, reduce the hoist and mount cost of stair 3, can avoid roof 11 simultaneously to the influence of stair 3 hoist and mount, can install stair 3 fast, improve the installation effectiveness of stair 3, make stair 3 hoist and mount again after roof 11 construction is accomplished and realize, stair 3 need not hoist and mount before roof 11 construction, be favorable to construction process's optimization.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. The method for embedded rapid installation and construction of the assembled steel structure stairway is characterized by comprising the following steps of:
before the construction of a roof (11), two roof beams (12) are arranged above a stair installation space, a plurality of section steel beams (13) are arranged between the two roof beams (12), lifting devices (2) are arranged on the section steel beams (13), and the lifting devices (2) can move along the section steel beams (13); then installing a pouring template of the roof slab (11), and constructing the roof slab (11);
after the construction of the building roof (11) is completed, lifting the stairs (3) by using the lifting appliance (2), placing the two ends of the stairs (3) on corresponding installation positions on the floors, and fixing the two ends of the stairs (3); hoisting the rest stairs (3) to corresponding positions sequentially by adopting the same method;
and after all the stairs (3) are hoisted, the lifting appliance (2) is dismantled.
2. The method for embedded rapid installation and construction of the fabricated steel structure stairway, according to claim 1, is characterized in that: during construction of the building main body (1), steel beams (15) are respectively arranged at the positions of two ends of the Ji Louti (3) on the floors at two sides of the stair installation space to serve as cross beams of the floors, after the stairs (3) are hoisted in place, the steel beams (15) are respectively welded at the two ends of the stairs (3), then building floor plates of the floors at two sides of the stair installation space are constructed, and the floor plates cover the two ends of the stairs (3).
3. The method for embedded rapid installation and construction of the fabricated steel structure stairway, according to claim 1, is characterized in that: roof crossbeam (12) are girder steel (15), and shaped steel roof beam (13) and roof crossbeam (12) welding to install steel sheet (14) as the pouring template of roof board (11) of the top of stair installation space in roof crossbeam (12) and shaped steel roof beam (13) top, steel sheet (14) weld shaped steel beam (13) and roof crossbeam (12) respectively, demolish hoist (2) after, carry out rust-resistant treatment to roof crossbeam (12), longeron and steel sheet (14).
4. The method for embedded rapid installation and construction of the fabricated steel structure stairway according to claim 3, wherein the method comprises the following steps: connecting steel bars are welded at the tops of the section steel beams (13) and the roof beam (12) respectively, the connecting steel bars are avoided when the steel plates (14) are installed, and when the roof plate (11) is constructed, the steel bars of the roof plate (11) are bound and fixed with the connecting steel bars.
5. The method for embedded rapid installation and construction of the fabricated steel structure stairway, according to claim 1, is characterized in that: the lifting devices (2) are provided with two sets, the two sets of lifting devices (2) are respectively arranged on two different section steel beams (13), and each section of stairs (3) is lifted by adopting the two sets of lifting devices (2).
6. The method for embedded rapid installation and construction of the fabricated steel structure stairway, according to claim 1, is characterized in that: the lifting appliance (2) comprises an electric vehicle and an electric hoist, wherein the electric vehicle is arranged on the section steel beam (13) and can move along the section steel beam (13), and the electric hoist is arranged on the electric vehicle.
7. The method for embedded rapid installation and construction of the fabricated steel structure stairway, according to claim 1, is characterized in that: after all the stairs (3) are hoisted, a construction platform is erected by depending on the building main body (1) and the installed stairs (3), and workers dismantle the lifting appliance (2) on the construction platform.
8. The method for embedded rapid installation and construction of the fabricated steel structure stairway, according to claim 1, is characterized in that: in the process of lifting the stair (3) by the lifting appliance (2), the distance between the stair (3) and the building main bodies (1) at two sides of the stair installation space is 20cm-50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310538877.5A CN116717061A (en) | 2023-05-12 | 2023-05-12 | Embedded rapid installation construction method for assembled steel structure stairway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310538877.5A CN116717061A (en) | 2023-05-12 | 2023-05-12 | Embedded rapid installation construction method for assembled steel structure stairway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116717061A true CN116717061A (en) | 2023-09-08 |
Family
ID=87870520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310538877.5A Pending CN116717061A (en) | 2023-05-12 | 2023-05-12 | Embedded rapid installation construction method for assembled steel structure stairway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116717061A (en) |
-
2023
- 2023-05-12 CN CN202310538877.5A patent/CN116717061A/en active Pending
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