A method for construction of suspended steel structure

Abstract

The present invention discloses a method for constructing a hanging steel structure, which includes the following steps: S1, fixing a cantilever platform on a first steel structure at a first height, and allowing part of the cantilever platform to cantilever on the outside of the first steel structure along a first direction. S2, splicing the unmounted first steel structure to the end of the first steel structure fixed at the first height along the first direction, and connecting it to the second steel structure on the front side of the first steel structure fixed at the first height. S3, releasing the fixation of the cantilever platform, moving the cantilever platform so that part of the cantilever platform cantilevers on the outside of the first steel structure, and fixing the cantilever platform. S4, repeating steps S2 and S3 n times. The present invention can realize the splicing construction of the first steel structure at the first height by utilizing only one operating platform, thereby reducing the construction cost of the hanging steel structure and shortening the construction time of the hanging steel structure through a push-type construction mode.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure erection, in particular to a construction method for a suspended steel structure. Background Art

[0002] With the development of society, there are more and more public construction projects, and at the same time, there is a great demand for buildings such as theaters and concert halls. Most of these buildings have suspended steel structures. However, since stage machinery, lighting and other equipment arrive relatively late, the suspended steel structures used to install stage machinery and lighting need to be constructed later. For the construction of the above-mentioned suspended steel structures, the relevant technology usually sets up a full-height frame to the bottom of the suspended steel structure as a construction operation platform to achieve the overall installation of the suspended steel structure. However, a large amount of steel is consumed in the process of setting up the full-height frame, and a lot of time is also consumed in setting up or dismantling. Therefore, the existing technology has the problems of poor economy and long time consumption. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a method for constructing a suspended steel structure, which can not only reduce construction costs but also shorten the construction time of the suspended steel structure.

[0004] The method for constructing a suspended steel structure according to an embodiment of the present invention includes:

[0005] S1. Fixing a cantilever platform on at least one first steel structure at a first height, and allowing a portion of the cantilever platform to cantilever outside the first steel structure along the first direction;

[0006] S2. Splice at least one unassembled first steel structure along the first direction to the end of the first steel structure fixed at the first height, and connect it to at least one second steel structure on the front side of the first steel structure fixed at the first height;

[0007] S3, releasing the cantilever platform, moving the cantilever platform along the first direction, and making a portion of the cantilever platform cantilever outside the first steel structure, and fixing the cantilever platform;

[0008] S4. Repeat the steps S2 and S3 at least n times (n≥0).

[0009] The hanging steel structure construction method according to the embodiment of the present invention has at least the following beneficial effects: the hanging steel structure construction method of the present invention adopts a push-type working mode, and uses a cantilever platform to gradually splice the uninstalled first steel structure with the installed first steel structure in the first direction, thereby realizing the construction of the hanging steel structure. The present invention can realize the splicing construction of the first steel structure at the first height by using only one operating platform, which greatly reduces the use of steel and the construction cost of the hanging steel structure. Moreover, the present invention reduces the construction time of erecting and dismantling the full-height frame through the push-type construction mode, thereby greatly reducing the construction time of the hanging steel structure.

[0010] According to some embodiments of the present invention, before releasing the cantilever platform in S3, the method includes:

[0011] G1. Connect one end of the fall chain on the hand chain hoist to the cantilever platform originally cantilevered outside the first steel structure, and connect the main body of the hand chain hoist to one of the second steel structures;

[0012] After releasing the cantilever platform in S3, the method includes:

[0013] G2. Pull the other end of the fall chain to move the cantilever platform along the first direction;

[0014] Repeat the S2 step, the G1 step, the S3 step, and the G2 step at least n times in sequence.

[0015] According to some embodiments of the present invention, the S4 includes:

[0016] After repeating steps S2-S3 n times, the first steel structure is connected to the wall at the end of the first direction or the first steel structure is connected to the second steel structure located at the end of the first direction.

[0017] According to some embodiments of the present invention, the plurality of second steel structures are further spaced apart and distributed along the second direction, and a plurality of cantilever platforms are used; and S1 includes:

[0018] Arrange the plurality of cantilever platforms along the second direction and fix them on the first steel structure;

[0019] Each of the cantilever platforms performs steps S2 to S4 within the same construction period;

[0020] The first direction is perpendicular to the second direction, and both the first direction and the second direction are parallel to a horizontal plane.

[0021] According to some embodiments of the present invention, the S1 includes:

[0022] Fixing the cantilever platform to at least two of the first steel structures spaced apart along the second direction;

[0023] The S1 then includes:

[0024] Perform steps S2 to S4 on each of the first steel structures spaced apart along the second direction;

[0025] Wherein, after splicing at least one unassembled first steel structure to the end of the first steel structure fixed at the first height in S2, the method further includes: connecting the ends of the first steel structures adjacent along the second direction;

[0026] The first direction is perpendicular to the second direction, and both the first direction and the second direction are parallel to a horizontal plane.

[0027] According to some embodiments of the present invention, the S1 step also includes F1: at the Nth height, hanging at least one uninstalled first steel structure below the first steel structure fixed at the N-1th height, wherein N is a positive integer greater than 1, and the Nth height is higher than the N-1th height.

[0028] According to some embodiments of the present invention, the F1 includes:

[0029] At the Nth height, at least one unmounted first steel structure is connected to the second steel structure located below the first steel structure at the N-1th height.

[0030] According to some embodiments of the present invention, the step F1 and the step S2 are performed in the same time period;

[0031] Alternatively, the F1 step and the S3 step are performed in the same time period.

[0032] Wherein, the S4 further includes:

[0033] In the same time period of repeating the S2 and S3 steps, the F1 step is repeated at least x (n≥x≥0) times.

[0034] According to some embodiments of the present invention, the step S1 includes:

[0035] At the first height, a portion of the first steel structure is pre-buried in the wall at the front end in the first direction.

[0036] According to some embodiments of the present invention, after fixing the cantilever platform on at least one first steel structure at a first height in S1, the method further includes:

[0037] Temporarily fixing the cantilevered platform cantilevered from the outside of the first steel structure to the second steel structure along the first direction;

[0038] Before the step S4 moves the cantilever platform along the first direction, the step S4 includes:

[0039] Unfixing the cantilever platform from the second steel structure;

[0040] After making a portion of the cantilever platform cantilevered outside the first steel structure in S4, the following steps are included:

[0041] The cantilevered platform cantilevered outside the first steel structure is temporarily fixed to the second steel structure.

[0042] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0044] Figure 1 This is a schematic diagram of one implementation of the hanging steel structure construction method according to an embodiment of the present invention;

[0045] Figure 2 for Figure 1 Schematic diagram for further implementation in;

[0046] Figure 3 for Figure 2 Schematic diagram for further implementation in;

[0047] Figure 4 for Figure 3 Schematic diagram of the middle cantilever platform before moving;

[0048] Figure 5 for Figure 4 Schematic diagram of the middle cantilever platform after it moves;

[0049] Figure 6 A schematic plan view of one embodiment of the method for hanging steel structure construction of the present invention;

[0050] Figure 7 It is a plan view of one embodiment of the method for hanging steel structure construction of the present invention.

[0051] Reference numerals: installed first steel structure 100, first steel structure to be installed 110;

[0052] The second steel structure 200 and the second hanging steel structure 210;

[0053] Cantilever platform 300, cantilever portion 310, fixed portion 320;

[0054] Hand chain hoist 400, fall chain 410, main body 420;

[0055] diagonal rope 500;

[0056] 600 is the vertical pull rope. DETAILED DESCRIPTION

[0057] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0058] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0059] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0060] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0061] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0062] In an environment where multiple second steel structures 200 are suspended from the ceiling and the multiple second steel structures 200 are spaced apart at least along the first direction, the installed first steel structure 100 needs to rely on the support of the ceiling and the wall. Therefore, the present invention provides a method for hanging steel structure construction, referring to Figure 1-Figure 3 , it is explained here that: the installed first steel structure 100 has been fixed at a first height, the first steel structure to be installed 110 has not yet been fixed at the first height, the second steel structure 200 is the second steel structure originally fixed to the ceiling, and the second hanging steel structure 210 is the second steel structure originally not fixed to the ceiling (the second steel structure 200 and the second hanging steel structure 210 in the present invention can be the same structure or different structures, and the following description will be based on the second steel structure 200). The hanging steel structure construction method includes: S1, fixing the cantilever platform 300 to at least one installed first steel structure 100, and making a part of the cantilever platform 300 cantilever along the first direction to the outside of the installed first steel structure 100.

[0063] S2. Along the first direction, splice at least one first steel structure 110 to be installed to the end of the installed first steel structure 100 and connect it to at least one second steel structure 200 on the front side of the installed first steel structure 100.

[0064] S3. Release the fixation of the cantilever platform 300, move the cantilever platform 300 along the first direction, and make a part of the cantilever platform 300 cantilever outside the installed first steel structure 100, and fix the cantilever platform 300.

[0065] S4. Repeat steps S2 and S3 at least n times (n≥0).

[0066] The hanging steel structure construction method of the present invention adopts a push-type working mode. The worker splices the first steel structure 110 to be installed in sequence along the first direction on the cantilever platform 300 to fix it at a first height. When the worker uses the first steel structure 110 to be installed to splice with the installed first steel structure 100 on the cantilever platform 300, the first steel structure 110 to be installed can also be fixed at the first height. Then the cantilever platform 300 is moved to the installed first steel structure 100 that has just been spliced, and the first steel structure 110 to be installed and the second steel structure 200 are continued to be spliced. Therefore, the staff can use the cantilever platform 300 at the first height to splice the installed first steel structure 100 along the first direction at the first height. Compared with the prior art that uses multiple steel structures to erect a full-height frame, the present invention only uses one operating platform to realize the splicing construction of the installed first steel structure 100 at the first height, which greatly reduces the use of steel and the construction cost of hanging steel structures. In addition, the present invention reduces the construction time of erecting and dismantling the full-height frame through a push-type construction mode, which greatly reduces the construction time of hanging steel structures.

[0067] Specifically, in S2, when the height of the bottom end of the second steel structure 200 suspended from the ceiling is higher than the first height, the staff will splice the uninstalled second steel structure 200 on the cantilever platform 300 below the second steel structure 200 fixed to the ceiling at the beginning of step S2, to ensure that the height of the second steel structure 200 suspended is not lower than the first height (if the height of the second steel structure 200 originally suspended from the ceiling is not lower than the first height, this step is not required). Subsequently, the first steel structure 110 to be installed is connected between the end of the installed first steel structure 100 in the first direction and the second steel structure 200 with a height not lower than the first height, so that this part of the first steel structure 110 to be installed is fixed to the wall and the ceiling (that is, it is fixed to the wall through the installed first steel structure 100 and fixed to the ceiling through the second steel structure 200).

[0068] In S1 and S3, the cantilever platform 300 can be fixed to the installed first steel structure 100 by bolts or welding; the splicing of the installed first steel structure 100 and the second steel structure 200 during the construction process can be completed by welding or bolting; the first steel structure 110 to be installed and the uninstalled second steel structure 200 (i.e., the second hanging steel structure 210) can be lifted to a first height on the ground by hoisting.

[0069] In some embodiments, before releasing the fixation of the cantilever platform 300 in S3, it includes G1, connecting one end of the fall chain 410 on the hand hoist 400 to the cantilever platform 300 (i.e., the cantilever part 310) originally cantilevered on the outside of the installed first steel structure 100, and connecting the main body 420 of the hand hoist 400 to one of the second steel structures 200; after releasing the fixation of the cantilever platform 300 in S3, it includes G2, pulling the other end of the fall chain 410 to move the cantilever platform 300 along the first direction; repeating S2 step, G1 step, S3 step, and G2 step at least n times in sequence.

[0070] This embodiment provides a method for realizing that the cantilever platform 300 moves along the first direction, referring to Figure 4 、 Figure 5 In this embodiment, one end of the fall chain 410 is fixed to the cantilever portion 310, and the other end is passed around the main body 420 and then fixed to the fixed portion 320. After the main body 420 of the hand chain hoist 400 is connected to one of the second steel structures 200, the end of the fall chain is pulled toward the fixed portion 320. As a result, the fall chain 410 applies a force in a first direction to the cantilever platform 300 originally cantilevered outside the installed first steel structure 100, causing the cantilever platform 300 to move in the first direction.

[0071] It is understandable that in some other embodiments, the fall chain 410 may not be fixed to the fixed portion 320 after being fixed to the cantilever portion 310 and passing around the main body 420. By pulling the fall chain 410 that passes around the main body 420 and is not fixed to the cantilever platform 300, the end of the fall chain 410 fixed to the cantilever portion 310 applies a force along the first direction to the cantilever platform 300, causing the cantilever platform 300 to move along the first direction.

[0072] In some embodiments, S4 includes: after repeating steps S2-S3 n times, the installed first steel structure 100 is connected to the wall at the end of the first direction or the installed first steel structure 100 is connected to the second steel structure 200 at the end of the first direction.

[0073] When the installed first steel structure 100 is constructed at the first height from the wall at the beginning along the first direction to the wall at the end along the first direction, the installed first steel structure 100 is connected to the wall, the construction is completed, and the construction purpose is achieved; alternatively, after the installed first steel structure 100 is connected to the second steel structure 200 located at the end of the first direction, the construction purpose has been achieved and the construction can also be stopped.

[0074] In some embodiments, reference Figure 7, multiple second steel structures 200 are also spaced apart along the second direction, and multiple cantilever platforms 300 are used; S1 includes: arranging multiple cantilever platforms 300 along the second direction and fixing them on the installed first steel structure 100; each cantilever platform 300 performs steps S2-S4 within the same construction time period; wherein, the first direction is perpendicular to the second direction, and both the first direction and the second direction are parallel to the horizontal plane.

[0075] This embodiment provides a construction method capable of fixing the installed first steel structure 100 at the first height along the second direction. By arranging multiple cantilever platforms 300 along the second direction, workers simultaneously install the installed first steel structure 100 at the first height along the first direction on the corresponding cantilever platforms 300, thereby realizing the installation of the installed first steel structure 100 along the second direction. The simultaneous construction using multiple cantilever platforms 300 can also help reduce construction time.

[0076] In some embodiments, reference Figure 6 , S1 includes: fixing the cantilever platform 300 on at least two installed first steel structures 100 spaced apart along the second direction; after S1, it includes: performing steps S2-S4 on each installed first steel structure 100 spaced apart along the second direction; wherein, after splicing at least one uninstalled installed first steel structure 100 to the end of the installed first steel structure 100 fixed at the first height in S2, it also includes: connecting the ends of the adjacent installed first steel structures 100 along the second direction; the first direction is perpendicular to the second direction, and the first direction and the second direction are both parallel to the horizontal plane.

[0077] It should be noted here that, in some other embodiments, the installed first steel structure 100 may be plate steel, steel grid, etc. For example, the plate steel extends along the second direction and can be spliced ​​along the first direction. In this way, the cantilever platform 300 can be directly fixed on the plate steel.

[0078] In this embodiment, an implementation method is shown in which the installed first steel structure 100 is in the form of a steel bar. During the process of splicing the installed first steel structures 100 along the first direction, the installed first steel structures 100 that are adjacent to each other and installed on the wall along the second direction are connected using the uninstalled installed first steel structures 100. In this way, along the second direction, by connecting each installed first steel structure 100, the rigidity between adjacent installed first steel structures 100 is improved, thereby improving the safety of the hanging steel structure.

[0079] In some embodiments, step S1 further includes F1: at the Nth height, hanging at least one uninstalled installed first steel structure 100 below the installed first steel structure 100 fixed at the N-1th height, wherein N is a positive integer greater than 1, and the Nth height is higher than the N-1th height.

[0080] This embodiment provides a method for installing the installed first steel structure 100 below the first height, referring to Figure 2-5 In F1, the installed first steel structure 100 that has not been installed is suspended below the installed first steel structure 100 that has been fixed at the N-1th height. Figure 2-5 The N=2 shown in FIG. 2 means that the hanging steel structure has at least two vertical layers of first steel structures 100 installed to meet actual needs. In theaters or concert halls, each layer of the hanging steel structure has a different function. For example, the first layer is installed with stage pulleys, while the second layer is installed with stage scaffolding. The scaffolding layer is used to arrange stage equipment, while the pulley layer is used to install pulleys for hanging booms.

[0081] Furthermore, in some embodiments, F1 includes: at the Nth height, connecting at least one uninstalled first steel structure 100 to the second steel structure 200 located below the installed first steel structure 100 at the N-1th height.

[0082] It should be noted that, in other embodiments, an uninstalled second steel structure 200 can be connected to the bottom of the installed first steel structure 100 at the first height and hung, and then the uninstalled installed first steel structure 100 and the uninstalled second steel structure 200 can be connected at the Nth height to obtain the Nth layer of installed first steel structure 100.

[0083] However, the installed first steel structure 100 is fixed horizontally. When the N-th layer of the installed first steel structure 100 is hung downward on the installed first steel structure 100 at the first height, the installed first steel structure 100 at the first height will be subjected to greater shear stress, and the installed first steel structure 100 at the first height is prone to bending, which may cause safety hazards. In this embodiment, the uninstalled second steel structure 200 is spliced ​​below the second steel structure 200 fixed to the ceiling, so that the bottom end height of the second steel structure 200 is lower than the first height. The uninstalled installed first steel structure 100 is connected to the second steel structure 200 below the first height. Since the second steel structure 200 extends in the vertical direction, when the installed first steel structure 100 is hung on the second steel structure 200, the positive stress of the second steel structure 200 is large, thereby ensuring the safety of the hanging steel structure.

[0084] Furthermore, in some embodiments, step F1 and step S2 are performed in the same time period; or step F1 and step S3 are performed in the same time period; wherein S4 further includes: repeating step F1 at least x (n ≥ x ≥ 0) times in the same time period as steps S2 and S3. When steps S2 and S3 are performed, F1 is also performed simultaneously. Thus, the installation of the first steel structure 100 at the first height and the second height is performed simultaneously, which can save construction time for hanging the steel structure.

[0085] It can be understood that by fixing the installed first steel structure 100 at the first height to the wall and the ceiling, the installed first steel structure 100 at the Nth height does not need to be directly fixed to the wall and the ceiling. For the installation of the installed first steel structure 100 at the Nth height, the staff can select the hanging range of the installed first steel structure 100 at the Nth height according to actual needs, that is, the length of the installed first steel structure 100 at the Nth height along the first direction can be greater than, equal to or less than the length of the installed first steel structure 100 at the first height.

[0086] It should be noted that, if there is a hanging steel structure on the wall in the starting stage (ie, the first steel structure 100 has been installed and fixed at the first height before S1 ), the above embodiment can be used for construction.

[0087] For the construction of a suspended steel structure without a starting stage, in some embodiments, before S1, it includes: at a first height, pre-embedding a portion of the installed first steel structure 100 on the wall at the front end of the first direction, and the installed first steel structure 100 pre-embedded on the wall at the front end of the first direction serves as a starting stage.

[0088] In order to improve the safety of the cantilever platform 300, in some embodiments, after fixing the cantilever platform 300 on at least one installed first steel structure 100 at the first height in S1, the method includes: temporarily fixing the cantilever platform 300 cantilevered outside the installed first steel structure 100 on the second steel structure 200 along the first direction; before moving the cantilever platform 300 along the first direction in S4, the method includes: releasing the fixation of the cantilever platform 300 on the second steel structure 200; after making part of the cantilever platform 300 cantilevered outside the installed first steel structure 100 in S4, the method includes: temporarily fixing the cantilever platform 300 cantilevered outside the installed first steel structure 100 on the second steel structure 200.

[0089] In this embodiment, after the cantilever platform 300 is fixed at the first height, Figure 1 、 2Or 3, the part of the cantilevered platform 300 cantilevered outside the installed first steel structure 100 is temporarily fixed to the second steel structure 200 by using the method of oblique pulling and / or vertical pulling (indicated by the oblique pulling rope 500 and the vertical pulling rope 600 in the figure). By temporarily fixing the part of the cantilevered platform 300 cantilevered outside the installed first steel structure 100 to the ceiling, the part of the cantilevered platform 300 cantilevered outside the installed first steel structure 100 can be supported by the ceiling, thereby improving the construction safety of the workers on the cantilevered platform 300.

[0090] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A method for constructing a suspended steel structure, wherein a plurality of second steel structures are suspended from a ceiling and the plurality of second steel structures are spaced apart at least along a first direction, characterized in that: The hanging steel structure construction method comprises: S1. Fixing a cantilever platform on at least one first steel structure at a first height, and allowing a portion of the cantilever platform to cantilever outside the first steel structure along the first direction; S2. Splice at least one unassembled first steel structure along the first direction to the end of the first steel structure fixed at the first height, and connect it to at least one second steel structure on the front side of the first steel structure fixed at the first height; S3, releasing the cantilever platform, moving the cantilever platform along the first direction, and making a portion of the cantilever platform cantilever outside the first steel structure, and fixing the cantilever platform; S4. Repeat the steps S2 and S3 at least n times (n≥0).

2. The method for constructing a suspended steel structure according to claim 1, characterized in that: Before releasing the cantilever platform in S3, the method includes: G1. Connect one end of the fall chain on the hand chain hoist to the cantilever platform originally cantilevered outside the first steel structure, and connect the main body of the hand chain hoist to one of the second steel structures; After releasing the cantilever platform in S3, the method includes: G2. Pull the other end of the fall chain to move the cantilever platform along the first direction; Repeat the S2 step, the G1 step, the S3 step, and the G2 step at least n times in sequence.

3. The method for construction of a suspended steel structure according to claim 1, characterized in that: The S4 includes: After repeating steps S2-S3 n times, the first steel structure is connected to the wall at the end of the first direction or the first steel structure is connected to the second steel structure located at the end of the first direction.

4. The method for constructing a suspended steel structure according to claim 1, characterized in that: The plurality of second steel structures are further spaced apart and distributed along the second direction, and a plurality of cantilever platforms are used; S1 includes: Arrange the plurality of cantilever platforms along the second direction and fix them on the first steel structure; Each of the cantilever platforms performs steps S2 to S4 within the same construction period; The first direction is perpendicular to the second direction, and both the first direction and the second direction are parallel to a horizontal plane.

5. The method for constructing a suspended steel structure according to claim 1, characterized in that: Said S1 comprises: Fixing the cantilever platform to at least two of the first steel structures spaced apart along the second direction; The S1 then includes: Perform steps S2 to S4 on each of the first steel structures spaced apart along the second direction; Wherein, after splicing at least one unassembled first steel structure to the end of the first steel structure fixed at the first height in S2, the method further includes: connecting the ends of the first steel structures adjacent to each other along the second direction; The first direction is perpendicular to the second direction, and both the first direction and the second direction are parallel to a horizontal plane.

6. The method for constructing a suspended steel structure according to claim 1, characterized in that: The step S1 also includes F1: at the Nth height, hanging at least one uninstalled first steel structure below the first steel structure fixed at the N-1th height, wherein N is a positive integer greater than 1, and the Nth height is higher than the N-1th height.

7. The method for constructing a suspended steel structure according to claim 6, characterized in that: The F1 includes: At the Nth height, at least one unmounted first steel structure is connected to the second steel structure located below the first steel structure at the N-1th height.

8. The method for constructing a suspended steel structure according to claim 6 or 7, characterized in that: The F1 step and the S2 step are performed in the same time period; Alternatively, the F1 step and the S3 step are performed in the same time period; Wherein, the S4 further includes: In the same time period of repeating the S2 and S3 steps, the F1 step is repeated at least x (n≥x≥0) times.

9. The method for constructing a suspended steel structure according to claim 1, characterized in that: The S1 includes: At the first height, a portion of the first steel structure is pre-buried in the wall at the front end in the first direction.

10. The method for constructing a suspended steel structure according to claim 1, characterized in that: After fixing the cantilever platform on at least one first steel structure at a first height in S1, the following steps are performed: Temporarily fixing the cantilevered platform cantilevered from the outside of the first steel structure to the second steel structure along the first direction; Before the step S4 moves the cantilever platform along the first direction, the step S4 includes: Unfixing the cantilever platform from the second steel structure; After making a portion of the cantilever platform cantilevered outside the first steel structure in S4, the following steps are included: The cantilevered platform cantilevered outside the first steel structure is temporarily fixed to the second steel structure.

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