Modular construction of steel-concrete composite frame structures

Abstract

The utility model relates to a kind of modularization buildings of steel-concrete composite frame structure, including multiple in factory standardization prefabrication molding module unit, module unit is the frame structure enclosed by steel-concrete composite column, steel-concrete composite beam and steel box girder, the end of steel-concrete composite beam is not filled with concrete;Adjacent module unit is assembled into integral building by dry type connecting node;Dry type connecting node includes connecting plate and bolt, connecting plate is clamped in the joint of upper and lower adjacent module unit, the end of steel-concrete composite beam of upper and lower adjacent module unit and bolt hole is correspondingly set on connecting plate and is connected by bolt, the end of steel box girder of upper and lower adjacent module unit and bolt hole is correspondingly set on connecting plate and is connected by bolt, connecting plate straddles the beam-column joint area of left and right adjacent module unit.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, and in particular to a modular building with a steel-concrete composite frame structure. Background Technology

[0002] Modular construction is an important direction in the development of industrialized construction. Its core feature is dividing the functional space of a building into several modular units, completing the integrated prefabrication of the structure, decoration, and electromechanical systems in the factory, and then transporting them to the site for rapid assembly. This "factory manufacturing + on-site hoisting" model can significantly shorten the construction period, reduce construction waste and carbon emissions, and meet the needs of new industrialized construction for efficient, green, and intelligent construction. Currently, the mainstream modular construction technologies are mainly divided into two categories: steel structure modular buildings and concrete structure modular buildings, but both have certain technical limitations.

[0003] Modular steel structures use steel frames or steel-supported frames as the main structure, with dry connection technologies such as bolts used between module units. Their advantages include high material strength, light weight, good seismic performance, and fast construction speed (the construction period can be shortened by about 50%). However, steel has poor corrosion and fire resistance, requiring additional anti-corrosion coatings or fire-resistant materials, increasing construction costs; at the same time, steel is more expensive than concrete, resulting in a higher overall cost.

[0004] Modular concrete buildings primarily employ precast shear wall systems or formwork systems, connecting modules through pre-reinforced steel bars and on-site poured concrete. Their advantages include good fire resistance, corrosion resistance, and sound insulation, along with lower construction costs. However, concrete modules are relatively heavy, making transportation and hoisting difficult and expensive. Furthermore, if a frame structure is used, the beam and column dimensions are small, leading to insufficient reliability of connection nodes, currently limiting their application to low-rise buildings. Additionally, there is a significant amount of on-site wet work (such as joint pouring), resulting in lower construction precision and efficiency compared to dry connections.

[0005] Both of these technologies face the challenge of insufficient overall performance: while steel structures are lightweight and efficient, they have weak corrosion resistance and fire resistance; while concrete structures have good durability, they suffer from poor self-weight and construction flexibility. In recent years, the industry has attempted to overcome these limitations through "steel-concrete composite structures," such as using CMC (steel-concrete composite module) technology, which combines the automated processing of steel structures with the fire resistance, corrosion resistance, and economic advantages of concrete. However, this type of technology involves a large amount of on-site wet concrete work, and there is room for optimization in terms of efficient connection and environmental protection. Therefore, there is an urgent need for a new modular building solution that can integrate the advantages of different materials to achieve safe, economical, efficient, and high-quality buildings. Utility Model Content

[0006] The purpose of this utility model is to provide a modular building with a steel-concrete composite frame structure, which can give full play to the synergistic stress-bearing advantages of steel and concrete, significantly reduce the amount of steel used under the same load-bearing capacity, and save construction costs.

[0007] To achieve the above objectives, this utility model provides a modular building with a steel-concrete composite frame structure, comprising multiple modular units that are prefabricated in a standardized manner in a factory. Each modular unit is a frame structure enclosed by steel-concrete composite columns, steel-concrete composite beams, and steel box beams. The steel-concrete composite beams and the steel box beams are respectively connected to two mutually perpendicular side walls on the steel-concrete composite columns. The ends of the steel components inside the steel-concrete composite beams are not filled with concrete in the factory.

[0008] Adjacent modular units are assembled into a whole building through dry connection nodes; the dry connection node includes a connecting plate and bolts. The connecting plate is clamped at the joint of the upper and lower adjacent modular units. The ends of the steel-concrete composite beams of the upper and lower adjacent modular units and the connecting plate are respectively opened with first bolt holes and connected by the bolts. The ends of the steel box beams of the upper and lower adjacent modular units and the connecting plate are respectively opened with second bolt holes and connected by the bolts. The connecting plate spans the beam-column joint area of ​​the left and right adjacent modular units, connecting the left and right adjacent modular units into a whole.

[0009] Optionally, both the steel-concrete composite column and the steel-concrete composite beam are made of H-beams, the web cavity of the H-beams is filled with concrete, and the first bolt holes are opened on the flanges of the H-beams.

[0010] Optionally, the height of the concrete filling the web cavity of the H-beam is consistent with the height of the web cavity.

[0011] Optionally, the steel box girder is provided with an operating hole at its end.

[0012] Optionally, depending on the structural stiffness and load-bearing capacity requirements, the steel-concrete composite column can be a square column or a flat, elongated column.

[0013] Optionally, the bottom of the module unit is provided with a module base plate, which is made of reinforced concrete slab, profiled steel sheet composite floor slab or light steel keel cement fiberboard.

[0014] Optionally, the module base plate is made of light steel keel cement fiberboard, and the bottom secondary beams for supporting the module base plate are provided between the bottom frames of the module units.

[0015] Optionally, the top of the module unit is provided with a module top plate, which is made of light steel keel plate or reinforced concrete plate.

[0016] Optionally, the top plate of the module is made of light steel keel plate, and a top secondary beam is provided between the top frames of the module unit to support the top plate of the module.

[0017] Optionally, the four walls of the module unit are infill walls, using ALC panels or light steel keel wall panels.

[0018] The modular building with a steel-concrete composite frame structure provided by this utility model has at least one of the following beneficial effects:

[0019] 1) High material utilization rate, superior structural performance, and significant economic benefits.

[0020] The core of this invention lies in utilizing the collaborative working mechanism of steel-concrete composite components. The concrete in the steel-concrete composite column primarily bears the vertical pressure, fully leveraging its high compressive strength. This reduces reliance on the dimensions of the steel cross-section, significantly reducing steel consumption compared to pure steel structure modules under the same load-bearing capacity requirements, directly lowering material procurement and component processing costs. Simultaneously, the concrete filling the cavity of the H-shaped steel web greatly enhances the local stability of the open section, avoiding the increased costs and complex connections associated with using closed sections (such as square steel tubes) in pure steel structures to meet stability requirements, and resulting in greater overall structural stiffness.

[0021] 2) Improved fire and corrosion resistance, reduced maintenance costs, and enhanced space utilization.

[0022] Steel-concrete composite members inherently possess enhanced fire resistance and corrosion resistance due to the concrete enclosure. The concrete itself acts as a fire and corrosion barrier, significantly reducing the exposed steel area (primarily the flanges). Therefore, when applying fire and corrosion protection measures, only localized protection is needed on areas such as the flanges. Compared to pure steel members requiring full cross-section coverage, this saves substantial amounts of protective materials and construction time. This not only reduces initial construction costs and subsequent maintenance costs, but more importantly, it avoids the need for extensive, heavy fire-resistant paneling inside the building, minimizing encroachment on usable space and allowing for greater flexibility in interior layout design, thus improving space utilization and aesthetics.

[0023] 3) Construction efficiency is greatly improved, project quality is easier to control, and the project is environmentally friendly.

[0024] This invention inherits the advantages of dry connection and rapid construction of steel structure modules. On-site assembly of module units is achieved using connecting plates and bolts, eliminating the need for wet work such as formwork, rebar tying, concrete pouring, and curing required for concrete modules. This greatly simplifies the process and minimizes the impact of weather and other on-site environmental factors. The control points for connection quality focus on bolt tightening torque and the fit of the connecting plates, which can be monitored and controlled in real time using quantitative tools (such as torque wrenches), ensuring stable and reliable quality and effectively avoiding potential hidden quality risks associated with wet joint connections. Simultaneously, this construction method significantly reduces construction waste, dust, and noise pollution on the construction site, meeting the requirements of green building and sustainable development.

[0025] 4) The connection nodes are simple and reliable in construction, and offer excellent ease of installation.

[0026] This invention optimizes the connection node design. By reserving an area without concrete filling at the beam end and creating bolt holes on the H-shaped steel flange, combined with a connecting plate spanning the left and right module beam-column joints, efficient integrated connection of the upper and lower, left and right modules is achieved. The steel-concrete composite beam connection method eliminates the need for complex connection boxes, simplifying the node structure, reducing on-site installation difficulty, improving efficiency, and further ensuring overall construction speed and quality. Attached Figure Description

[0027] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

[0028] Figure 1 A plan view of a modular building with a steel-concrete composite frame structure provided in an embodiment of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of a module unit provided in an embodiment of the present utility model;

[0030] Figure 3 for Figure 1 Dry connection node diagram corresponding to section A;

[0031] Figure 4 for Figure 3 Schematic diagram of the middle connecting plate;

[0032] Figure 5 for Figure 1 Dry connection node diagram of section B;

[0033] Figure 6 for Figure 5 Schematic diagram of the middle connecting plate;

[0034] Figure 7A cross-sectional view of a steel-concrete composite beam provided in an embodiment of this utility model;

[0035] Figure 8 A cross-sectional view of a steel-concrete composite square column provided in an embodiment of this utility model;

[0036] Figure 9 A cross-sectional view of a steel-concrete composite flat elongated column provided in an embodiment of this utility model.

[0037] The attached figures are labeled as follows:

[0038] 100 - Module unit; 110 - Steel-concrete composite column; 120 - Steel-concrete composite beam; 130 - Steel box girder; 131 - Operating hole; 140 - Module base plate; 150 - Bottom secondary beam; 160 - Top secondary beam; 200 - Connecting plate; 300 - Bolt. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes said element. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Please refer to Figures 1-6 This utility model embodiment provides a modular building with a steel-concrete composite frame structure, including multiple modular units 100 that are prefabricated in a factory. Each modular unit 100 is a frame structure enclosed by steel-concrete composite columns 110, steel-concrete composite beams 120, and steel box beams 130. The steel-concrete composite beams 120 and steel box beams 130 are respectively connected to two mutually perpendicular side walls on the steel-concrete composite columns 110. The ends of the steel components inside the steel-concrete composite beams 120 are not filled with concrete.

[0044] Adjacent module units 100 are assembled into an integral building through dry connection nodes; the dry connection nodes include connection plates 200 and bolts 300. The connection plates 200 are clamped at the joint of adjacent module units 100. The ends of the steel-concrete composite beams 120 of adjacent module units 100 and the connection plates 200 are respectively opened with first bolt holes and connected by bolts 300. The ends of the steel box beams 130 of adjacent module units 100 and the connection plates 200 are respectively opened with second bolt holes and connected by bolts 300.

[0045] Specifically, such as Figure 2 As shown, the basic unit of this modular building is a standardized modular unit 100. This unit is prefabricated in the factory, integrating the main structure, interior decoration, and electromechanical pipelines to form a "fully functional room." During on-site construction, these modular units 100 are hoisted into place like building blocks and assembled into a complete building using dry-joint nodes.

[0046] In this embodiment, module unit 100 is a frame structure enclosed by steel-concrete composite columns 110, steel-concrete composite beams 120, and steel box beams 130, wherein the columns of this frame structure are compression-bending members. Figures 7-9As shown, both the steel-concrete composite column 110 and the steel-concrete composite beam 120 use H-beams, with concrete filling the web cavity of the H-beams. This structure forms a system where steel and concrete work together to bear the load. In this embodiment, studs are welded at specific locations on the web of the H-beams. These studs serve as key shear connectors, ensuring that the cast-in-place concrete and the steel web work together under load, preventing relative slippage and forming a robust composite section. Furthermore, to further enhance the integrity and crack resistance of the component, transverse reinforcing bars are welded to the flanges of the H-beams, followed by longitudinal reinforcing bars. This reinforcing mesh works in conjunction with the concrete, improving the stability of the H-beam flanges, the crack resistance of the concrete, and the overall integrity of the steel-concrete composite section. After the reinforcing bars are tied, concrete is poured into the web cavity of the H-beams. Preferably, the height of the concrete filling the web cavity of the H-beams is the same as the height of the web cavity. This approach enables "formwork-free" casting, and the filling of concrete greatly enhances the local stability of the web, avoiding the local buckling problem that is prone to occur in pure steel structures, allowing the components to fully utilize the tensile strength of steel and the compressive strength of concrete.

[0047] The cross-sectional shape of the column can be flexibly adopted according to the needs of building layout and structural calculations, using a square cross-section (suitable for corner columns or locations requiring greater two-way stiffness), such as... Figure 8 As shown, or a flat, elongated cross-section (suitable for edge columns within walls, which can reduce the impact on the building space, such as...) Figure 9 As shown.

[0048] In this embodiment, the beam connected to the weak axis of the steel-concrete composite column 110 is a steel-concrete composite beam 120. The beam in the other direction can also be a steel-concrete composite beam 120 or a steel box girder 130. The web cavity at the beam end of the steel-concrete composite beam 120 is not filled with concrete at the factory, and bolt holes are pre-drilled on the beam end flange for bolt connections between adjacent module units 100 on site. The steel box girder 130 has an operating hole 131 at its end for easy bolt connections between adjacent module units 100 on site.

[0049] In this embodiment, as Figure 2As shown, the bottom of module unit 100 is provided with a module base plate 140. The module base plate 140 can be made of reinforced concrete slab, profiled steel sheet composite floor slab, or light steel keel cement fiber board, which can be determined according to design requirements. For reinforced concrete slab and composite floor slab construction, only a few or no bottom secondary beams 150 are required between the bottom frames of module unit 100. This type of floor slab has high load-bearing capacity and vibration comfort, simplifies the structure, and increases the floor height. For lightweight keel floor slabs, bottom secondary beams 150 are arranged between the bottom frames, and cement fiber board is laid on the bottom secondary beams 150. This type of floor slab is lighter, which is beneficial for transportation and hoisting.

[0050] In this embodiment, a module top plate (not shown in the figure) is provided on the top of the module unit 100. The module top plate is made of light steel keel plate or reinforced concrete plate. Preferably, the module top plate is mainly made of light steel keel plate to minimize the self-weight of the upper structure. At the same time, top and secondary beams 160 are provided between the top frames of the module unit 100 to support the module top plate. In some areas with special load-bearing requirements, reinforced concrete plate may also be used locally.

[0051] In this embodiment, the four walls of module unit 100 are infill walls, using ALC panels or light steel keel wall panels. The four walls of module unit 100 do not participate in the main structural load-bearing; they primarily serve a partitioning and maintenance function. ALC panels (autoclaved aerated concrete panels) or light steel keel wall panels are preferred. Both types of wall panels have the advantages of being lightweight, fireproof, having good thermal insulation properties, and being quick to install, which highly aligns with the concept of modular building.

[0052] Dry connection nodes are key to enabling rapid installation. See also Figures 3-6 Its core components are the connecting plate 200 and the bolt 300, preferably a high-strength bolt. The specific connection process is as follows: During factory prefabrication, a certain area at the end of the steel-concrete composite beam 120 is intentionally left unfilled with concrete, leaving the H-shaped steel flange completely exposed, and bolt holes are drilled there. During on-site installation, the connecting plate 200 is clamped between the corresponding beam ends of adjacent upper and lower module units 100. The high-strength bolt 300 is then passed sequentially through the bolt holes in the upper flange of the lower module unit's steel-concrete composite beam 120, the bolt holes in the connecting plate 200, and the bolt holes in the lower flange of the upper module unit's steel-concrete composite beam 120. Finally, the nuts are tightened to complete the vertical connection. The connecting plate 200 can be designed as a long strip, such as... Figure 4 and Figure 6 As shown, this allows it to span the beam-column joint area of ​​two adjacent module units 100, thus enabling a single connecting plate 200 to simultaneously complete vertical and horizontal connections, greatly improving connection efficiency and overall integrity. This invention does not limit the number or distribution of the first and second bolt holes; they can be configured according to requirements.

[0053] In this embodiment, the specific construction steps are as follows:

[0054] S1. Factory prefabrication of steel-concrete composite members (steel-concrete composite column 110 and steel-concrete composite beam 120)

[0055] Preparation of main steel components: First, process open-section H-beams according to the design dimensions to form the main steel frame of the steel-concrete composite component;

[0056] Welding of shear-resistant connectors: such as Figures 7-9 As shown, studs are welded at specific locations on the web of the H-beam.

[0057] Reinforcing steel cage arrangement: To further enhance the integrity and crack resistance of the components, short transverse reinforcing bars are welded onto the flange plates of the H-beams, and then longitudinal reinforcing bars are tied on them.

[0058] Concrete pouring: After the reinforcement is tied, concrete is poured into the web cavity of the H-beam.

[0059] S2, Factory assembly of modular unit 100 structure

[0060] After the steel-concrete composite components have been cured, the modular units 100 are assembled in three dimensions on the factory production line.

[0061] Frame erection: The prefabricated steel-concrete composite columns 110 are erected and positioned as the main compression-bending members, fully utilizing the high compressive strength of concrete. Beam members are then installed.

[0062] Beams along the depth (length) direction of the room can be steel box beams 130, and beams along the width direction of the room can be steel-concrete composite beams 120.

[0063] S3. Installation of Enclosure System and Internal Structure

[0064] After the main frame is assembled, the integration of other parts is completed immediately in the factory.

[0065] Floors and ceilings: Modular base plates 140 and modular top plates are laid on the frame, and these plates together with the skeleton form a robust floor system;

[0066] Infill wall installation: ALC panels or light steel keel wall panels are installed on the four sides of the module as infill walls. These walls are non-load-bearing and only serve as partitions and maintenance, with the advantages of being lightweight, fireproof, and having good thermal insulation properties.

[0067] S4, Interior and Electromechanical System Integration

[0068] This step is crucial for demonstrating the "functional completeness" of modular buildings. Interior finishing (such as flooring, wall cladding, and ceilings) and the laying and installation of all mechanical and electrical pipelines (water supply, drainage, electrical, HVAC, and fire protection) are carried out simultaneously in a controlled factory environment. This integrated approach ensures an extremely high level of interior finish and quality.

[0069] S5. On-site hoisting and dry connection

[0070] After the complete module unit 100 is transported to the site, it is precisely positioned using large hoisting equipment.

[0071] The core dry connection is then performed: the connecting plate 200 is placed at the beam-column joint of the adjacent upper and lower, and left and right module units 100. High-strength bolts 300 are then passed through the pre-drilled bolt holes on the beam end flanges of the adjacent upper and lower module units 100 and the corresponding holes on the connecting plate 200, and tightened to the specified torque. The design of the connecting plate 200 allows it to span the beam-column joint area of ​​the adjacent left and right module units 100, thus achieving a connection in both vertical and horizontal directions in a single operation, greatly improving construction efficiency and structural integrity.

[0072] S6, Node Final Processing

[0073] After all modules are connected, the connection nodes are coated with anti-corrosion and fireproof coatings or covered with fireproof boards according to design requirements, and the joints are sealed to ensure the safety and performance of the building.

[0074] In summary, the modular building with a steel-concrete composite frame structure provided by this utility model comprehensively improves the overall performance of the building through synergistic innovation in materials, structure, and connection methods. This modular building fully leverages the synergistic load-bearing advantages of steel and concrete, significantly reducing steel consumption and saving construction costs while maintaining the same load-bearing capacity. Simultaneously, the concrete filling effectively enhances the inherent fire resistance and corrosion resistance of the components, reducing the area and cost of subsequent protection and avoiding the unnecessary occupation of interior space. In terms of on-site construction, its dry connection technology overcomes the drawbacks of traditional wet construction of concrete modules, achieving rapid and high-quality assembly, significantly shortening the construction period, ensuring controllable quality, minimizing construction waste, and meeting green building requirements. Ultimately, the modular building provided by this utility model successfully combines the advantages of steel structure modules ("lightweight, fast, and high-quality") with concrete structure modules ("stable, economical, and safe"), achieving a unity of safety, economy, efficiency, and practicality.

[0075] The above description is merely a description of a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the present utility model. Obviously, those skilled in the art can make various modifications and variations to the present utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the present utility model and its equivalents, the present utility model also intends to include these modifications and variations.

Claims

1. A modular building with a steel-concrete composite frame structure, characterized in that, It includes multiple modular units that are standardized and prefabricated in the factory. The modular unit is a frame structure enclosed by steel-concrete composite columns, steel-concrete composite beams and steel box girders. The steel-concrete composite beams and the steel box girders are respectively connected to two mutually perpendicular side walls on the steel-concrete composite columns. The ends of the steel components inside the steel-concrete composite beams are not filled with concrete. Adjacent modular units are assembled into a whole building through dry connection nodes; the dry connection node includes a connecting plate and bolts. The connecting plate is clamped at the joint of the upper and lower adjacent modular units. The ends of the steel-concrete composite beams of the upper and lower adjacent modular units and the connecting plate are respectively opened with first bolt holes and connected by the bolts. The ends of the steel box beams of the upper and lower adjacent modular units and the connecting plate are respectively opened with second bolt holes and connected by the bolts. The connecting plate spans the beam-column joint area of ​​the left and right adjacent modular units, connecting the left and right adjacent modular units into a whole.

2. The modular building with a steel-concrete composite frame structure according to claim 1, characterized in that, Both the steel-concrete composite column and the steel-concrete composite beam are made of H-beams, and the web cavity of the H-beams is filled with concrete. The first bolt hole is opened on the flange of the H-beam.

3. The modular building with a steel-concrete composite frame structure according to claim 2, characterized in that, The height of the concrete filling the web cavity of the H-beam is the same as the height of the web cavity.

4. The modular building with a steel-concrete composite frame structure according to claim 1, characterized in that, The steel box girder has an operating hole at its end.

5. The modular building with a steel-concrete composite frame structure according to claim 1, characterized in that, Based on the structural stiffness and load-bearing capacity requirements, the steel-concrete composite column is a square column or a flat, elongated column.

6. The modular building with a steel-concrete composite frame structure according to claim 1, characterized in that, The bottom of the module unit is provided with a module base plate, which is made of reinforced concrete slab, profiled steel sheet composite floor slab or light steel keel cement fiberboard.

7. The modular building with a steel-concrete composite frame structure according to claim 6, characterized in that, The module base plate is made of light steel keel cement fiberboard, and the bottom secondary beams are provided between the bottom frames of the module units to support the module base plate.

8. The modular building with a steel-concrete composite frame structure according to claim 1, characterized in that, The top of the module unit is provided with a module top plate, which is made of light steel keel plate or reinforced concrete plate.

9. The modular building with a steel-concrete composite frame structure according to claim 8, characterized in that, The top plate of the module is made of light steel keel plate, and the top and secondary beams for supporting the top plate are provided between the top frames of the module units.

10. The modular building with a steel-concrete composite frame structure according to claim 1, characterized in that, The four walls of the module unit are infill walls, using ALC panels or light steel keel wall panels.

Images