Steel structure modular building suite and construction method thereof

Abstract

The application discloses a steel structure modular building suite and a construction method thereof, and relates to the technical field of building construction. The steel structure modular building suite comprises a box body module, the box body module comprises a frame main body and a box top prefabricated integral floor connected with the frame main body, and the box top prefabricated integral floor comprises prefabricated stressed floors and corrugated steel plates which are adjacent in the horizontal direction. The prefabricated stressed floor comprises a flat plate section and folded plate sections which extend downward from opposite sides of the flat plate section, the folded plate sections are connected with the frame main body, and the folded plate sections and the flat plate section jointly form a first preset vertical space. The flat plate section and the downwardly extending folded plate section of the prefabricated stressed floor form the first preset vertical space which can be used as the net height of the building above the frame main body, and the structure design of the corrugated steel plates and the folded plate sections forming a second preset vertical space reduces the structural height of the module connection position, and at the same time, the corrugated steel plates have the permanent structural function on the basis of meeting the construction requirements, so that the technical problems of insufficient building net height and material waste are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of modular building, in particular to a steel structure modular building suite and a construction method thereof. BACKGROUND

[0002] At present, steel structure modular buildings have been widely used in public building fields such as schools, hospitals and hotels. However, in residential buildings such as residences and dormitories, although there is potential for application, the promotion is limited.

[0003] The existing steel structure modular building mainly adopts the structural form of "bottom main frame bearing + top dense rib beam + corrugated plate covering". Among them, the bottom bears the floor self-weight and the use load through the steel truss floor slab, and the top adopts dense rib beam and corrugated plate covering to meet the waterproof and load requirements during construction. This design has the following technical problems:

[0004] 1. After the upper and lower box bodies of the module are assembled, the structural height at the floor is large (about 600mm), which seriously affects the building net height. Taking a dormitory with a layer height of 3.6m as an example, considering the structural height and the building surface layer, the actual net height can only reach 3.07m, which cannot meet the requirement of 3.4m net height of the dormitory;

[0005] 2. The dense rib beam and corrugated plate (about 450-550kg) in the box top structure are only used to meet the requirements during construction, and do not bear the main structure function in the whole life cycle of building use, causing material waste and increasing construction cost.

[0006] These problems directly restrict the promotion and application of steel structure modular buildings in residential buildings. SUMMARY

[0007] The main purpose of the present application is to provide a steel structure modular building suite and a construction method thereof to solve the above technical problems.

[0008] In a first aspect, the present application provides a steel structure modular building suite, comprising a box body module, the box body module comprising a frame main body and a box top prefabricated integral floor connected with the frame main body, the box top prefabricated integral floor comprising prefabricated stressed floor and corrugated steel plate adjacent in the horizontal direction;

[0009] The prefabricated stressed floor comprises a flat plate section and folded plate sections extending downward from opposite sides of the flat plate section, the folded plate sections being connected with the frame main body and forming a first preset vertical space together with the flat plate section;

[0010] The corrugated steel plate is connected with the folded plate sections and the frame main body at opposite sides, respectively, and the corrugated steel plate and the folded plate sections form a second preset vertical space above the box body module.

[0011] The frame body comprises oppositely distributed force columns, the top ends of the force columns are respectively provided with first top beams and second top beams between the folded plate segments and the corrugated steel plates, and the bottom ends of the force columns are respectively provided with bottom beams; the folded plate segments are arranged on the top of the first top beams and form first preset horizontal spaces between the folded plate segments and the first top beams.

[0012] The box body module further comprises a steel bar truss floor slab, which is arranged in the frame body and connected to the top of the bottom beam.

[0013] The box body module comprises an upper layer box body module and a lower layer box body module arranged in a stack; the steel bar truss floor slab of the upper layer box body module is arranged in the second preset vertical space of the lower layer box body module; the steel bar truss floor slab of the upper layer box body module and the second top beam of the lower layer box body module form a second preset horizontal space.

[0014] The bottom beams of the upper layer box body module are respectively embedded in the first preset horizontal space and the second preset horizontal space of the lower layer box body module.

[0015] The thickness of the folded plate segment is not less than 100 mm, and the folded plate segment is integrally formed with the flat plate segment by a steel reinforced concrete pouring manner.

[0016] The width of the bottom beam is respectively less than the width of the first top beam and the second top beam.

[0017] A support side plate is arranged between the connection part of the prefabricated force floor and the corrugated steel plate and the steel bar truss floor slab.

[0018] A leakage-proof sealing structure is arranged at the connection part of the upper layer box body module and the lower layer box body module.

[0019] In a second aspect, the application further provides a construction method of the steel structure modular building suite.

[0020] The force columns, the first top beams, the second top beams and the bottom beams are assembled to form a frame body;

[0021] The box top prefabricated integral floor slab is lifted to a predetermined installation position of the frame body;

[0022] The box top prefabricated integral floor slab is fixedly connected to the frame body through the first top beams and the second top beams;

[0023] The upper box module is lifted above the lower box module, and grouting is carried out at the connection of the upper box module and the lower box module.

[0024] The beneficial technical effects of the present application: the flat plate section and the downwardly extending folded plate section of the prefabricated stressed floor form a first preset vertical space above the frame body, which can be used as the net height inside the building, and the corrugated steel plate and the folded plate section form a second preset vertical space, which reduces the structural height of the module connection and makes the corrugated steel plate have permanent structural function on the basis of meeting the construction requirements, thereby solving the technical problems of insufficient building net height and material waste. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The cross-sectional schematic diagram of the upper and lower box modules in the steel structure modular building suite provided by the embodiment of the present application is shown.

[0027] Figure 2 The cross-sectional schematic diagram of the box module in the steel structure modular building suite provided by the embodiment of the present application is shown.

[0028] Figure 3 The box structure schematic diagram in the steel structure modular building suite provided by the embodiment of the present application is shown.

[0029] Figure 4 The box structure schematic diagram in the steel structure modular building suite provided by the embodiment of the present application is shown.

[0030] Figure 5 The effect schematic diagram of the upper box module and the lower box module in the steel structure modular building suite provided by the embodiment of the present application is shown.

[0031] Figure 6 The construction method flowchart of the steel structure modular building suite provided by the embodiment of the present application is shown.

[0032] Explanation of reference signs:

[0033] In the figure: 100-box module, 10-prefabricated stressed floor, 11-flat plate section, 12-folded plate section, 13-reinforcing bar, 20-corrugated steel plate, 30-frame body, 31-stressed column, 32-first top beam, 33-second top beam, 34-bottom beam, 40-steel truss floor slab, 50-supporting side plate, 60-leakage-proof sealing structure. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0036] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0037] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0038] like Figures 1-5 As shown, an embodiment of the present invention provides a steel structure modular building suite, including a box module 100, the box module 100 includes a frame body 30 and a prefabricated integral floor slab on the box top connected to the frame body 30, the prefabricated integral floor slab on the box top includes a prefabricated load-bearing floor 10 and a corrugated steel plate 20 adjacent in the horizontal direction; the prefabricated load-bearing floor 10 includes a flat plate section 11 and a folded plate section 12 extending downward from opposite sides of the flat plate section 11, the folded plate section 12 is connected to the frame body 30, and together with the flat plate section 11 forms a first preset vertical space; the corrugated steel plate 20 is connected to the folded plate section 12 and the frame body 30 on opposite sides respectively, and the corrugated steel plate 20 and the folded plate section 12 form a second preset vertical space above the box module 100.

[0039] In the embodiment, the building suite comprises a box module 100. The box module 100 mainly comprises a frame body 30 and a box-top prefabricated monolithic floor connected with the frame body 30, wherein the box-top prefabricated monolithic floor comprises prefabricated stressed floors 10 and corrugated steel plates 20 arranged adjacent to each other in the horizontal direction, forming a composite box-top prefabricated monolithic floor. Here, "adjacent to each other" specifically means that the prefabricated stressed floors 10 and the corrugated steel plates 20 are arranged immediately adjacent to each other on the same horizontal plane, wherein the prefabricated stressed floors 10 are arranged above the main use space (such as a bedroom, etc.) of the suite, and the corrugated steel plates 20 are arranged above the secondary space (such as a bathroom, etc.). This arrangement fully considers the differentiated needs of different functional spaces for structural performance.

[0040] The prefabricated stressed floor 10 comprises a flat plate section 11 arranged horizontally and a folded plate section 12 arranged on opposite sides of the flat plate section 11. The folded plate section 12 is arranged downwardly bent relative to the flat plate section 11 and connected with the frame body 30. This design makes the folded plate section 12 and the flat plate section 11 form a first preset vertical space above the frame body 30, which can be used as a net height space in the box module 100, to solve the technical problem of insufficient building net height caused by excessive structural height (about 600 mm) at the module connection in traditional steel modular buildings. Here, the opposite sides refer to the two opposite edge positions of the flat plate section 11.

[0041] The corrugated steel plate 20 is connected with the folded plate section 12 and the frame body 30 on opposite sides, so that the corrugated steel plate 20 and the folded plate section 12 form a second preset vertical space above the box module 100. This design not only meets the waterproofing and load-bearing requirements during construction, but also provides installation space for the steel bar truss floor slab 40 of the upper box module 100. Compared with the traditional design of dense ribbed beams and corrugated plates, the corrugated steel plate 20 in the embodiment can not only meet the functional requirements during construction, but also serve as a permanent structural component, avoiding material waste. Here, the opposite sides refer to the two opposite edges of the corrugated steel plate in the horizontal direction. That is, one side of the corrugated steel plate 20 is connected with the folded plate section 12, and the other side is connected with the frame body 30.

[0042] The design of the steel modular building suite fully considers the requirements of assembly construction. The prefabricated stressed floor 10 can be prefabricated in the factory and directly installed on site after transportation. The arrangement of the corrugated steel plate 20 simplifies the construction process and improves the construction efficiency. Through the reasonable matching of the prefabricated stressed floor 10 and the corrugated steel plate 20, the overall performance of the structure is guaranteed, and the internal net height effect of the building is significantly improved.

[0043] Through the above embodiment, the structural height of the module connection is reduced, so that a larger net height space can be obtained in a dormitory room with a layer height of 3.6 m, thereby meeting the requirement of 3.4 m net height of the dormitory. At the same time, the composite box top prefabricated integral floor cancels the dense rib beam and corrugated plate structure (about 450-550 kg) in the traditional design only for meeting the demand in the construction stage, and instead adopts a permanent structure that can meet the temporary demand during construction and the bearing demand in the whole life cycle of the building. In this way, the material consumption can be reduced, and the construction cost can be reduced.

[0044] In an embodiment, the frame body 30 includes relatively distributed force columns 31, the top ends of the force columns 31 are respectively provided with first top beams 32 and second top beams 33 between the folded plate section 12 and the corrugated steel plate 20, and the bottom ends of the force columns 31 are respectively provided with bottom beams 34; the folded plate section 12 is arranged on the top of the first top beam 32 and forms a first preset horizontal space with the first top beam 32.

[0045] In the embodiment, the frame body 30 includes relatively distributed force columns 31, which not only bear the vertical load of the entire box module 100, but also provide the necessary lateral stiffness. In order to realize the reliable connection of the prefabricated force floor 10 and the corrugated steel plate 20 with the frame body 30, the top ends of the force columns 31 are respectively provided with first top beams 32 and second top beams 33, wherein the first top beams 32 are fixedly connected with the folded plate section 12, and the second top beams 33 are fixedly connected with the corrugated steel plate 20. The bottom ends of the force columns 31 are provided with bottom beams 34 for supporting the entire box module 100.

[0046] Specifically, the folded plate section 12 is arranged on the top of the first top beam 32 and forms a first preset horizontal space with the first top beam 32. This arrangement not only ensures the reliable connection of the folded plate section 12 with the frame body 30, but also provides sufficient installation and adjustment space for subsequent construction by reserving the first preset horizontal space. The provision of the first preset horizontal space makes it possible to better coordinate the positional relationship between the components during the installation of the box module 100, thereby improving the construction accuracy.

[0047] The structural design of the frame body 30 fully considers the characteristics of modular buildings, and forms a complete force system through the reasonable arrangement of the force columns 31, the top beams and the bottom beams 34. At the same time, the provision of the preset horizontal space also provides a convenient condition for on-site installation.

[0048] In an embodiment, the box module 100 further includes a steel bar truss floor slab 40, which is arranged in the frame body 30 and connected to the top of the bottom beam 34.

[0049] In the embodiment, the box module 100 further comprises a steel bar truss floor slab 40. The steel bar truss floor slab 40 is arranged inside the frame body 30 and connected to the top of the bottom beam 34, and is mainly used to form a floor structure to bear the floor self weight and use load.

[0050] Specifically, the steel bar truss floor slab 40 is produced in a factory prefabricated manner, and the specification and size thereof are determined according to actual design requirements. The steel bar truss floor slab 40 is fixed to the top of the bottom beam 34 by a reliable connection manner to form a stable floor load-bearing component.

[0051] In the embodiment, the steel bar truss floor slab 40 is the same as the prefabricated stressed floor slab 10, and is also a factory prefabricated part.

[0052] In an embodiment, the box module 100 comprises an upper box module 100 and a lower box module 100 arranged in a vertical stack; the steel bar truss floor slab 40 of the upper box module 100 is arranged in the second preset vertical space of the lower box module 100; and the steel bar truss floor slab 40 of the upper box module 100 and the second top beam 33 of the lower box module 100 form a second preset horizontal space.

[0053] In the embodiment, the plurality of box modules 100 respectively comprise an upper box module 100 and a lower box module 100. By this vertical stacking manner, a multi-storey building structure can be constructed.

[0054] Specifically, the steel bar truss floor slab 40 of the upper box module 100 is arranged in the second preset vertical space of the lower box module 100. That is to say, the second preset vertical space formed by the corrugated steel plate 20 and the folded plate segment 12 in the lower box module 100 not only meets the waterproofing and load-bearing requirements during construction, but also provides installation space for the steel bar truss floor slab 40 of the upper box module 100. This design fully utilizes the space between the modules and effectively reduces the total height of the structure.

[0055] The steel bar truss floor slab 40 of the upper box module 100 and the second top beam 33 of the lower box module 100 form a second preset horizontal space. The preset horizontal space is mainly used to accommodate the bottom beam 34 of the upper box module 100, thereby realizing reliable connection between the upper and lower box modules 100. Through this design, the integrity of the structure is ensured, and necessary construction installation space is provided.

[0056] This module stacking manner realizes effective connection between the upper and lower box modules 100 by reasonably arranging the preset space to accommodate the connecting component, and also solves the problem of excessive structural height at the connection of the traditional steel structure modular building.

[0057] In an embodiment, the bottom beam 34 of the upper box module 100 is embedded in the first and second preset horizontal spaces of the lower box module 100, respectively.

[0058] In the present embodiment, the bottom beam 34 is arranged in the preset horizontal spaces of the lower box module 100 at the connection between the upper box module 100 and the lower box module 100, so as to optimize the structural height. The first preset horizontal space is formed between the folded plate segment 12 and the first top beam 32, and the second preset horizontal space is formed between the steel bar truss floor slab 40 and the second top beam 33. This design enables the bottom beam 34 to be effectively "hidden" in the reserved space, avoiding the problem of increased structural height caused by the bottom beam 34 in the traditional design.

[0059] This arrangement makes full use of the existing preset horizontal space without the need for additional structural height. By embedding the bottom beam 34 in the preset horizontal space, a compact connection between the upper and lower box modules 100 is achieved.

[0060] In an embodiment, the thickness of the folded plate segment 12 is not less than 100 mm, and the folded plate segment 12 is integrally formed with the flat plate segment 11 by reinforced concrete pouring.

[0061] In the present embodiment, the thickness of the folded plate segment 12 is set to be not less than 100 mm. On the one hand, this can meet the minimum thickness requirement of reinforced concrete components, ensuring the integrity and durability of the structural components. On the other hand, appropriately increasing the thickness of the folded plate segment 12 can improve its bending moment resistance, enabling the folded plate segment 12 to bear larger architectural dead loads, live loads, and construction loads, etc.

[0062] In terms of construction technology, the folded plate segment 12 is connected with the flat plate segment 11 by integral pouring of reinforced concrete. This integral pouring construction method can ensure reliable integral connection between the folded plate segment 12 and the flat plate segment 11, avoiding the connection reliability problems that may exist in the traditional prefabricated component splicing. During pouring, the steel bars need to be arranged reasonably, especially at the connection between the folded plate segment 12 and the flat plate segment 11, where the reinforcement 13 should be appropriately strengthened to offset the unbalanced bending moment. Through this integral pouring process, the integrity and load-bearing performance of the structure can be effectively guaranteed.

[0063] In a specific embodiment, reinforcing bars 13 are arranged in both the flat slab section 11 and the folded slab section 12, and the number of reinforcing bars 13 in the folded slab section 12 is greater than that in the flat slab section 11. This arrangement of reinforcing bars 13 is mainly based on the following considerations: on the one hand, the flat slab section 11 mainly bears vertical loads, and the reinforcing bars 13 arranged therein meet the normal use requirements; on the other hand, since there is an unbalanced bending moment between the folded slab section 12 and the flat slab section 11, the number of reinforcing bars 13 in the folded slab section 12 needs to be appropriately increased to offset this unbalanced bending moment, so as to ensure the overall stress performance of the prefabricated stressed floor 10.

[0064] In an embodiment, the width of the bottom beam 34 is less than the width of the first top beam 32 and the second top beam 33 respectively.

[0065] In the present embodiment, the (first and second) top beams need to provide sufficient support width for the bottom beam 34 of the upper box module 100, while also meeting the requirements of construction and installation. By appropriately widening the top beams, more positioning and adjusting space can be provided for the bottom beam 34 of the upper box module 100, facilitating on-site installation and position adjustment.

[0066] Secondly, the bottom beam 34 mainly bears the vertical loads transmitted from the upper structure and transmits them to the lower structure. Since the bottom beam 34 is arranged in a predetermined horizontal space, its width should be adapted to the predetermined space. By reducing the width of the bottom beam 34, it can be better embedded in the predetermined horizontal space, thereby realizing compact connection of the structure.

[0067] This beam width differentiation design not only meets the structural stress requirements, but also improves the operability of construction, which is a design that takes into account both structural performance and construction convenience.

[0068] In an embodiment, a support side plate 50 is arranged between the connection between the prefabricated stressed floor 10 and the corrugated steel plate 20 and the steel bar truss floor support plate 40.

[0069] In the present embodiment, in order to strengthen the structural stability of the connection between the prefabricated stressed floor 10 and the corrugated steel plate 20, and also to separate the space within the box module 100, a support side plate 50 is arranged between the connection between the prefabricated stressed floor 10 and the corrugated steel plate 20 and the steel bar truss floor support plate 40.

[0070] The support side plate 50 provides additional support for the connection between the prefabricated stressed floor 10 and the corrugated steel plate 20, enhancing the stability of the connection; secondly, the support side plate 50 can also divide the space within the box module 100, so that the space below the prefabricated stressed floor 10 serves as a dormitory, and the space below the corrugated steel plate 20 serves as a bathroom.

[0071] In an embodiment, a leakage-proof sealing structure 60 is arranged at the connection between the upper box module 100 and the lower box module 100.

[0072] In this embodiment, an anti-leakage sealing structure 60 is provided between the upper box module 100 and the lower box module 100. Specifically, the anti-leakage sealing structure 60 is provided between the top beam and the corresponding first top beam 32 and second top beam 33, and between the steel truss floor deck 40 of the upper box module 100 and the corrugated steel plate 20 thereunder.

[0073] The provision of this anti-leakage sealing structure 60 not only solves the problem of leakage at the joints of traditional modular buildings, but also increases the overall service life of the building and provides a better living environment for residents.

[0074] like Figure 6 As shown, corresponding to the above steel structure modular building suite, an embodiment of the present invention further provides a construction method of the steel structure modular building suite, and the construction method includes the following steps:

[0075] At step S100, the load-bearing columns 31, the first and second top beams 32, 33, and the bottom beams 34 are assembled to form the main frame 30. Specifically, the first and second top beams 32, 33, and 34 are first connected to the load-bearing columns 31, ultimately forming a stable frame structure. This step provides basic support for the subsequent installation of the prefabricated integral floor slabs on the box roof.

[0076] S200: Lift the prefabricated integral floor slab on the top of the box to the predetermined installation position on the main frame 30. Specifically, the prefabricated load-bearing floor slab 10 and the corrugated steel sheet 20 are lifted as a whole to the predetermined installation position. Because the prefabricated load-bearing floor slab 10 is prefabricated in a factory, product quality is guaranteed. Furthermore, installing the prefabricated floor slab by lifting it as a whole improves construction efficiency and reduces on-site work.

[0077] S300: The prefabricated integral floor slab on the top of the box is fixedly connected to the frame body 30 via the first top beam 32 and the second top beam 33. Specifically, the folded plate section 12 of the prefabricated load-bearing floor slab 10 is fixedly connected to the frame body 30 via the first top beam 32, and the corrugated steel sheet 20 is fixedly connected to the frame body 30 via the second top beam 33.

[0078] S400, the upper box body module 100 is lifted above the lower box body module 100, and grouting is carried out at the connection between the upper box body module 100 and the lower box body module 100. Specifically, the upper box body module 100 is hoisted above the lower box body module 100, the steel truss floor 40 of the upper box body module 100 enters the second preset vertical space of the lower box body module 100, and the bottom beam 34 of the upper box body module 100 is embedded in the first and second preset horizontal spaces of the lower box body module 100; grouting is carried out at the connection between the upper box body module 100 and the lower box body module 100 to form an integral connection.

[0079] Through the above construction steps, the rapid installation and reliable connection of the steel structure modular building suite can be realized. This construction method not only improves the construction efficiency, but also ensures the construction quality. At the same time, by adopting the way of lifting installation of the prefabricated integral floor on the box top, combined with the composite structure design of the prefabricated stressed floor 10 and the corrugated steel plate 20, the structural height of the module connection can be effectively reduced; the dense rib beam and corrugated plate structure (about 450-550 kg) used only in the construction stage in the traditional design is cancelled, reducing the material consumption and construction cost.

[0080] In this embodiment, during the prefabricated component (prefabricated integral floor on the box top) manufacturing stage, a grouting groove needs to be reserved at the bottom of the folded plate section 12 of the prefabricated stressed floor 10. The position of the grouting groove should correspond to the position of the bolt on the top of the steel beam (the first top beam 32 and the second top beam 33).

[0081] During actual construction, the measurement and line laying are used to ensure the accurate positioning of the prefabricated floor, and necessary temporary supports are set to ensure the stability during the construction process. After the component is positioned, the alignment of the reserved gap, the grouting groove and the bolt is reviewed. The pressure grouting method is adopted for grouting construction to ensure that the grouting material can be fully filled. During construction, the grouting should be started from one end of the grouting groove and gradually pushed forward, and the flow of the grouting material is observed through the overflow hole to ensure that the grouting material completely fills the grouting groove.

[0082] Through the above grouting connection method, the reliable connection of the prefabricated integral floor on the box top and the steel beam can be realized, and an integral stressed system is formed. After the grouting connection is completed, the entire box structure forms an integral whole, which can bear stress cooperatively, thereby improving the overall performance and service life of the building.

[0083] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A steel construction modular building suite, characterized in that, The box module comprises a frame body and a box top prefabricated monolithic floor connected with the frame body, and the box top prefabricated monolithic floor comprises a prefabricated stressed floor and a corrugated steel plate adjacent in the horizontal direction. The prefabricated stressed floor comprises a flat plate section and folded plate sections extending downward from opposite sides of the flat plate section, the folded plate sections are connected with the frame body and form a first preset vertical space together with the flat plate section. The corrugated steel plate is connected with the folded plate sections and the frame body at opposite sides, and the corrugated steel plate and the folded plate sections form a second preset vertical space above the box module. The frame body comprises stressed columns distributed oppositely, and the top ends of the stressed columns are respectively provided with first top beams and second top beams between the folded plate sections and the corrugated steel plate, and the bottom ends of the stressed columns are respectively provided with bottom beams; the folded plate sections are arranged on the top of the first top beams and form a first preset horizontal space between the folded plate sections and the first top beams. The box module further comprises a steel bar truss floor support plate arranged in the frame body and connected to the top of the bottom beams. The box module comprises an upper box module and a lower box module arranged in layers; the steel bar truss floor support plate of the upper box module is arranged in the second preset vertical space of the lower box module; the steel bar truss floor support plate of the upper box module and the second top beam of the lower box module form a second preset horizontal space.

2. The building suite of claim 1, wherein, The bottom beams of the upper box module are respectively embedded in the first preset horizontal space and the second preset horizontal space of the lower box module.

3. The building suite of claim 2, wherein, The thickness of the folded plate sections is not less than 100 mm, and the folded plate sections are integrally formed with the flat plate sections by a steel reinforced concrete integral pouring method.

4. The building suite of claim 3, wherein, The width of the bottom beams is respectively less than the width of the first top beams and the second top beams.

5. The building suite of claim 4, wherein, Support side plates are arranged between the connection of the prefabricated stressed floor and the corrugated steel plate and the steel bar truss floor support plate.

6. The building suite according to any one of claims 1-5, characterized in that Anti-leakage sealing structures are arranged at the connection of the upper box module and the lower box module.

7. A method of constructing a modular building suite of steel construction according to any one of claims 1-6, characterized in that, The following steps are included: The stressed columns, the first top beams, the second top beams and the bottom beams are assembled to form a frame body; The box top prefabricated monolithic floor is lifted to a predetermined installation position of the frame body; The box top prefabricated monolithic floor is fixedly connected to the frame body through the first top beams and the second top beams; The upper box module is hoisted above the lower box module, the steel bar truss floor support plate of the upper box module is arranged in the second preset vertical space of the lower box module, and the bottom beams of the upper box module are embedded in the first preset horizontal space and the second preset horizontal space of the lower box module; grouting is performed at the connection of the upper box module and the lower box module to form an integral connection.

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