MIC modular building and construction method thereof

Abstract

The invention belongs to the technical field of modular house construction, and provides an MIC modular building and a construction method thereof.The MIC modular building comprises a plurality of MIC modules and connecting node devices, and the adjacent MIC modules are arranged in an up-and-down laminated mode and arranged side by side in a left-and-right mode through the connecting node devices; the connecting node device comprises a first connecting piece, a second connecting piece, a first positioning piece and a fixing piece, the first connecting piece is arranged between node plates of the MIC module which are arranged in an up-and-down laminated mode and arranged side by side in a left-and-right mode, and the first connecting piece is positioned with the node plates through the positioning piece; the second connecting piece is connected with the module steel columns of the MIC module through the fixing piece, wherein the module steel columns are arranged in an up-and-down laminated mode and arranged side by side in a left-and-right mode. By means of the construction measures, it can be guaranteed that the MIC module is erected in multiple layers, and construction is convenient and fast.

Description

Technical Field

[0001] This invention belongs to the field of modular housing construction technology, specifically relating to a MIC modular building and its construction method. Background Technology

[0002] With the development of the construction industry, steel modular buildings have gradually gained attention due to their advantages such as high efficiency, environmental friendliness, and industrialization. Steel modular buildings break down a building into multiple steel modular units, which are prefabricated in a factory and then transported to the construction site for assembly and connection.

[0003] MIC (Mechanical and Industrial Manufacturing) steel structure module technology represents an advanced form of industrialized construction. Its current technological foundation is built upon addressing industry challenges (labor, efficiency, quality, and environmental protection), policy impetus, and technological advancements (BIM, automation, and new materials). While challenges remain regarding cost, design flexibility, and management complexity, its significant advantages in speed, quality, safety, and environmental protection enable it to demonstrate strong viability in specific types of buildings (especially highly standardized projects with tight deadlines), and it continues to evolve towards larger scale, higher intelligence, and greater green sustainability.

[0004] Currently, there is a lack of specialized modular connection structures for the assembly and connection of modular houses, which reduces construction efficiency. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a MIC modular building with reasonable structural design and convenient installation.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A modular building with MIC (Micro-Integrated Microstructure) includes:

[0008] Several MIC modules and connection node devices are provided, and adjacent MIC modules are stacked vertically or arranged side by side through the connection node devices.

[0009] The MIC module includes a module frame, integrated wall panels, a top plate, and a steel truss floor deck. The integrated wall panels are installed on the side of the module frame, the top plate is installed on the top of the module frame, and the steel truss floor deck is installed on the bottom of the module frame.

[0010] The modular frame includes modular steel columns, a main bottom steel beam, a secondary bottom steel beam, a main top steel beam, a secondary top steel beam, and node plates. The modular steel columns are connected to the main bottom steel beam and the main top steel beam, respectively. The secondary bottom steel beam is connected to the main bottom steel beam, and the secondary top steel beam is connected to the main top steel beam. The node plates are respectively located at both ends of the modular steel columns.

[0011] The connection node device includes a first connector, a second connector, a first positioning member, and a fixing member. The first connector is disposed between the node plates of the MIC modules arranged in upper and lower layers and side by side. The first connector is positioned with the node plates by the positioning member. The second connector is connected to the module steel column of the MIC modules arranged in upper and lower layers and side by side by the fixing member.

[0012] The MIC module is equipped with a detachable lifting head and a second positioning component on its top.

[0013] Protective components are provided between adjacent MIC modules.

[0014] Preferably, the number of main steel beams on the top of the module is two or more, and they are connected by the node plate to form a square-shaped module top frame. The number of secondary steel beams on the top of the module is two or more, and they are arranged in parallel within the module top frame.

[0015] The module has two or more main steel beams connected by the node plate to form a square module bottom frame, and the module has two or more secondary steel beams arranged in parallel within the module bottom frame.

[0016] The modular steel column is located between the top frame and the bottom frame of the module.

[0017] Preferably, the number of integrated wall panels is two or more, one integrated wall panel is provided with a window frame, and the other integrated wall panel is provided with a door frame;

[0018] The module frame contains integrated bathroom fixtures;

[0019] A suspended ceiling is provided at the top plate, which is located within the module frame;

[0020] A floor finishing layer is provided at the steel truss floor slab within the module frame.

[0021] Preferably, the first connector includes a horizontal connecting plate and an anti-rotation plate. The anti-rotation plate is vertically disposed at the bottom of the horizontal connecting plate. The horizontal connecting plate is disposed between the node plates of the MIC modules stacked vertically. The anti-rotation plate is disposed between the node plates of the MIC modules arranged side by side.

[0022] Preferably, the node plate is provided with a positioning hole, the first positioning member is disposed on the horizontal connecting plate and cooperates with the positioning hole, and the fixing member connects the node plate and the horizontal connecting plate.

[0023] Preferably, the second connector and the module steel column are provided with connection holes, the connection holes including a first connection part and a second connection part, the first connection part and the second connection part are through hole structures and are connected to each other.

[0024] Preferably, the protective components include rock wool filler, PE rods, and waterproof sealant.

[0025] Preferably, the protective component further includes a fireproof plate that wraps around the steel column of the adjacent MIC module.

[0026] This invention also includes a method for constructing a MIC modular building, applied to the aforementioned MIC modular building, comprising the following steps:

[0027] S1: Production MIC module:

[0028] (1) Assemble the modular steel columns, the main steel beams at the bottom of the module, the secondary steel beams at the bottom of the module, the main steel beams at the top of the module, the secondary steel beams at the top of the module, and the node plates and weld them together to form a modular frame;

[0029] (2) Correct the above-mentioned welding deformation by using heavy pressure correction or flame correction methods to ensure that the dimensions of the module frame meet the design requirements;

[0030] (3) Sandblast the surface of the module frame to remove rust and reach the Sa2.5 level rust removal standard. Apply primer, intermediate paint and topcoat to ensure that the coating thickness and adhesion meet the design requirements. After the coating is completed, conduct an appearance inspection to ensure that there are no defects such as missed coating or dripping.

[0031] (4) Manufacturing integrated wall panels, roof slabs and steel truss floor decks;

[0032] (5) Assemble the module frame, integrated wall panel, top plate and steel truss floor deck to form MIC module, and conduct acceptance inspection, checking the size, appearance quality and anti-corrosion coating.

[0033] S2. Installation of multiple MIC modules:

[0034] (1) Use a hoisting device to hoist multiple MIC modules to the designated position to form the first layer of MIC structure, and adjust the level, verticality, elevation, and spacing between each MIC module to meet the installation requirements. Install a connecting node device between adjacent MIC modules to connect the MIC modules arranged side by side. Remove the hoisting device and install the second positioning component.

[0035] (2) Then, multiple MIC modules are hoisted to the designated position above the first layer of MIC structure by the hoisting device. First, they are positioned with the bottom structure by the second positioning component, and then the MIC modules stacked on the upper and lower layers are connected by the connecting node device to form the second layer of MIC structure.

[0036] (3) Install door and window fittings;

[0037] (4) Install suspended ceilings and integrated bathroom fixtures;

[0038] (5) Install protective components between adjacent MIC modules.

[0039] Preferably, in step S2(4): ceiling installation:

[0040] Marking lines: Use a level to mark horizontal points on each corner of the room and mark the level line. Measure from the level line to the designed height of the ceiling plus the material thickness, and use a chalk line to mark the level line along the wall. This is the bottom line of the secondary joists of the ceiling.

[0041] Fixed hanging rods: The hanging rods are fixed with expansion bolts. The hanging rods are rust-proofed and fixed to the top plate with expansion bolts. Holes are drilled with an impact hammer, and the hole diameter is larger than the diameter of the expansion bolt.

[0042] Install hanging rods on the module frame;

[0043] Install the edge keel: The edge keel should be installed according to the design requirements. The L-shaped galvanized light steel strips should be fixed to the wall with self-tapping screws along the horizontal keel line on the wall. The wall should be fixed with nails. The spacing of the nails should not be greater than the spacing of the secondary keel of the ceiling.

[0044] Install the main keel: The main keel should be suspended on the hanger rod. The main keel should be extended by butt joint. The butt joints of adjacent keels should be staggered. After the main keel is installed, it should be basically leveled.

[0045] Install secondary keel: The secondary keel is installed tightly against the main keel;

[0046] Installation of integrated bathroom fixtures:

[0047] Inspect the work surface, check whether the profiles around the chassis of the integrated bathroom are deformed, whether the floor tiles are intact and without cracks, whether the tiled wall panels have chipped edges or corners, and whether there are cracks at the opening positions.

[0048] Laying out lines: chassis positioning lines and elevation lines of the completed installation surface;

[0049] The process includes: connecting and assembling the chassis drainage pipes; splicing and leveling the chassis; connecting pipelines before installing the wall panels; installing the wall panels according to the drawings; installing electrical systems on the ceiling; installing hardware, sanitary ware, and components on the ceiling and roof joists; finishing and cleaning the edges.

[0050] Compared with the prior art, the beneficial effects of the present invention include:

[0051] The core function of this invention lies in its systematic solution to numerous pain points of traditional construction methods in terms of efficiency, quality, safety, environmental protection, and labor dependence through factory prefabrication and rapid on-site assembly. Practical application has proven that it can significantly shorten construction time, improve building quality and precision, enhance construction safety, reduce environmental pollution, and offers excellent cost-effectiveness and flexibility. It is particularly suitable for projects with high requirements for construction time, quality, and environmental protection, or those with limited on-site conditions. It represents an important trend in the construction industry's transformation towards greater efficiency, greener practices, and smarter technologies. Attached Figure Description

[0052] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the module frame of the MIC module of the present invention.

[0054] Figure 2 This is a schematic diagram showing the installation of the MIC module frame, integrated wall panel, top plate, and steel truss floor deck of the present invention.

[0055] Figure 3 This is a schematic diagram of the internal structure of the MIC module of the present invention.

[0056] Figure 4 This is a schematic diagram showing the installation position of the protective component of the present invention.

[0057] Figure 5 This is a schematic diagram of the hoisting of the MIC module of the present invention.

[0058] Figure 6 This is a schematic diagram showing the MIC modules of the present invention arranged side by side.

[0059] Figure 7 This is a schematic diagram showing the upper and lower stacked configuration of the MIC module of the present invention.

[0060] Figure 8 This is an exploded view of the connection node device of the present invention.

[0061] Figure 9 This is a cross-sectional view of the connection node device of the present invention from the front view.

[0062] Figure 10This is a schematic diagram of the connection node device of the present invention from a side view.

[0063] in:

[0064] 1-Node plate; 2-Horizontal connecting plate; 3-Fixed component; 4-First positioning component; 5-Module steel column; 6-Module bottom main steel beam; 7-First connecting hole; 8-Second connecting hole; 9-Second connecting component; 10-Anti-rotation plate; 11-Positioning hole; 12-Module bottom secondary steel beam; 13-Module top main steel beam; 14-Module top secondary steel beam; 15-Integrated wall panel; 16-Window frame; 17-Door frame; 18-Top plate; 19-Universal rotating lifting ring; 20-Connecting plate; 21-Second positioning component; 22-Integrated bathroom fixture; 23-Ceiling; 24-Floor finishing layer; 25-Steel truss floor deck; 26-Protective components. Detailed Implementation

[0065] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; the described embodiments are merely some, not all, of the embodiments of the present 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.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0067] Example:

[0068] like Figure 1-10 As shown, this embodiment provides a MIC modular building, including:

[0069] Several MIC modules and connecting node devices are provided, and adjacent MIC modules are stacked vertically or arranged side by side through the connecting node devices.

[0070] The MIC module includes a module frame, integrated wall panels 15, a top plate 18, and a steel truss floor deck 25. The integrated wall panels 15 are installed on the side of the module frame, the top plate 18 is installed on the top of the module frame, and the steel truss floor deck 25 is installed on the bottom of the module frame.

[0071] The modular frame includes modular steel columns 5, modular bottom main steel beams 6, modular bottom secondary steel beams 12, modular top main steel beams 13, modular top secondary steel beams 14, and node plates 1. The modular steel columns 5 are connected to the modular bottom main steel beams 6 and 13 respectively. The modular bottom secondary steel beams 12 are connected to the modular bottom main steel beams 6. The modular top secondary steel beams 14 are connected to the modular top main steel beams 13. The node plates 1 are respectively located at both ends of the modular steel columns 5.

[0072] The connection node device includes a first connector, a second connector 9, a first positioning member 4, and a fixing member 3. The first connector is located between the node plates 1 of the MIC modules that are stacked vertically and arranged side by side. The first connector is positioned with the node plate 1 by the positioning member. The second connector 9 is connected to the module steel column 5 of the MIC modules that are stacked vertically and arranged side by side by the fixing member 3.

[0073] The top of the MIC module is equipped with a detachable lifting head device and a second positioning component 21. Specifically, the lifting head device is a universal rotating lifting ring 19, and the second positioning component 21 is a positioning cone.

[0074] A protective component 26 is provided between adjacent MIC modules.

[0075] Specifically, there are two or more main steel beams 13 on the top of the module, which are connected by node plates 1 to form a square-shaped module top frame, and there are two or more secondary steel beams 14 on the top of the module, which are arranged in parallel within the module top frame.

[0076] The number of main steel beams 6 at the bottom of the module is two or more and they are connected by node plates 1 to form a square-shaped module bottom frame. The number of secondary steel beams 12 at the bottom of the module is two or more and they are arranged in parallel within the module bottom frame.

[0077] The modular steel column 5 is located between the top frame and the bottom frame of the module.

[0078] Specifically, there are two or more integrated wall panels 15, one integrated wall panel 15 is provided with a window frame 16, and the other integrated wall panel 15 is provided with a door frame 17;

[0079] The module frame contains an integrated bathroom fixture 22;

[0080] Ceiling 23 is installed at 18 locations on the top plate within the module frame;

[0081] There are 25 steel truss floor decks located within the module frame, and 24 floor finishing layers are provided.

[0082] Specifically, the first connecting member includes a horizontal connecting plate 2 and an anti-rotation plate 10. The anti-rotation plate 10 is vertically disposed at the bottom of the horizontal connecting plate 2. The horizontal connecting plate 2 is disposed between the node plates 1 of the MIC modules stacked vertically. The anti-rotation plate 10 is disposed between the node plates 1 of the MIC modules arranged side by side.

[0083] Specifically, the node plate 1 is provided with a positioning hole 11, the first positioning member 4 is provided on the horizontal connecting plate 2 and cooperates with the positioning hole 11, and the fixing member 3 connects the node plate 1 and the horizontal connecting plate 2.

[0084] Specifically, the first connecting member, the second connecting member 9, the upper connecting component, and the lower connecting component are provided with adjusting parts that can cooperate with the fixing member 3, and the fixing member 3 can slide with the adjusting parts:

[0085] The adjustment part includes a first connection hole 7 on the second connector 9 and the module steel column 5. The first connection hole 7 includes a first connection part and a second connection part. The first connection part and the second connection part are through holes and are connected to each other. The second connection hole 8 is a long strip through hole structure on the node plate 1.

[0086] Specifically, protective component 26 includes rock wool filler, PE rods, and waterproof sealant.

[0087] Specifically, the protective component 26 also includes a fireproof plate that wraps around the module steel column 5 of the adjacent MIC module.

[0088] This invention also includes a method for constructing a MIC modular building, applied to the aforementioned MIC modular building, comprising the following steps:

[0089] S1: Production MIC module:

[0090] (1) Assemble the module steel column 5, module bottom main steel beam 6, module bottom secondary steel beam 12, module top main steel beam 13, module top secondary steel beam 14 and node plate 1 and weld them together to form a module frame;

[0091] (2) Correct the above-mentioned welding deformation by using heavy pressure correction or flame correction methods to ensure that the dimensions of the module frame meet the design requirements;

[0092] (3) Sandblast the surface of the module frame to remove rust and reach the Sa2.5 level rust removal standard. Apply primer, intermediate paint and topcoat to ensure that the coating thickness and adhesion meet the design requirements. After the coating is completed, conduct an appearance inspection to ensure that there are no defects such as missed coating or dripping.

[0093] (4) Manufacturing integrated wall panels 15, roof slabs 18, and steel truss floor decking 25:

[0094] Before production, the integrated wall panel 15 requires detailed drawing preparation based on architectural drawings, structural drawings, and electrical and plumbing diagrams. Production begins only after design confirmation. During production, electrical and plumbing conduits are pre-embedded. Based on the detailed drawings, the integrated wall panel 15 is positioned within the steel structure module using laser measurement. First, the top and bottom joists are fixed. Then, the connecting joists are fixed to the sides of the partition wall. Self-tapping screws are used to fix side A and side B of the partition wall to the joists. Butyl tape is applied to the joints of the wall panels.

[0095] According to the steel truss floor deck 25 of the MIC module, standard truss plates should be used as much as possible to reduce the cutting work in the factory and save on the amount of materials. The bottom form of the steel truss floor deck 25 is welded to the steel frame with studs. After pouring concrete, the floor slab in the module is formed as a whole. After the concrete has set, the ground decoration layer 24 in the module can be constructed.

[0096] (5) Assemble the module frame, integrated wall panel 15, top plate 18 and steel truss floor deck 25 together to form MIC module, and conduct acceptance inspection to check the size, appearance quality and anti-corrosion coating.

[0097] S2. Installation of multiple MIC modules:

[0098] (1) Multiple MIC modules are hoisted to designated positions by hoisting device to form the first layer of MIC structure, and the horizontality, verticality, elevation and spacing of each MIC module are adjusted to meet the installation requirements. Connecting node device is installed between adjacent MIC modules to connect the MIC modules arranged side by side. The hoisting head device is removed and the second positioning part 21 and connecting plate 20 are installed.

[0099] (2) Then, multiple MIC modules are hoisted to the designated position above the first layer of MIC structure by the hoisting device. First, the second positioning component 21 is used to position the bottom structure. Then, the connection of the MIC modules stacked on the upper and lower layers is achieved by the connecting node device to form the second layer of MIC structure.

[0100] (3) Install door and window fittings;

[0101] (4) Install ceiling 23 and integrated bathroom 22;

[0102] (5) Install protective components 26 between adjacent MIC modules.

[0103] Specifically, in step S2(4): the installation of the suspended ceiling 23:

[0104] Marking lines: Use a level to mark horizontal points on each corner of the room and mark the level line. Measure from the level line to the designed height of the ceiling plus the material thickness, and use a chalk line to mark the level line along the wall. This is the bottom line of the secondary joists of the ceiling.

[0105] Fixed hanging rods: The hanging rods are fixed with expansion bolts. The hanging rods are rust-proofed and fixed to the top plate 18 with expansion bolts. Holes are drilled with an impact hammer, and the hole diameter is larger than the diameter of the expansion bolt.

[0106] Install hanging rods on the module frame;

[0107] Install the edge keel: The edge keel should be installed according to the design requirements. The L-shaped galvanized light steel strips should be fixed to the wall with self-tapping screws along the horizontal keel line on the wall. The wall should be fixed with nails. The spacing of the nails should not be greater than the spacing of the secondary keel of the ceiling.

[0108] Install the main keel: The main keel should be suspended on the hanger rod. The main keel should be extended by butt joint. The butt joints of adjacent keels should be staggered. After the main keel is installed, it should be basically leveled.

[0109] Install secondary keel: The secondary keel is installed tightly against the main keel;

[0110] Installation of integrated bathroom unit 22:

[0111] Inspect the work surface, check whether the profiles around the chassis of the integrated bathroom 22 are deformed, whether the floor tiles are intact and without cracks, whether the tiled wall panels have chipped edges or corners, and whether there are cracks at the opening positions.

[0112] Laying out lines: chassis positioning lines and elevation lines of the completed installation surface;

[0113] The process includes: connecting and assembling the chassis drainage pipes; splicing and leveling the chassis; connecting pipelines before installing the wall panels; installing the wall panels according to the drawings; installing electrical systems on the ceiling; installing hardware, sanitary ware, and components on the ceiling and roof joists; finishing and cleaning the edges.

[0114] This invention provides a modular MIC building with a wide field of vision, high comfort, and the following advantages:

[0115] 1. Adjacent MIC modules are stacked vertically or side-by-side via connecting node devices, ensuring the stability of the connection between adjacent MIC modules, avoiding on-site welding, and improving installation efficiency. At the same time, horizontal and vertical connections can be made between MIC modules to strengthen the connection structure. The adjustable part can adjust the position of the fixing part 3, thereby adjusting the position of the first connecting part and the second connecting part 9 relative to the steel module building connection components, which is convenient for adjusting errors during installation. It can also be disassembled and reused, making it more environmentally friendly.

[0116] 2. The module frame of the MIC module in this embodiment is a prefabricated structure, which can be fully automatically welded in the factory, reducing the welding intensity of workers, ensuring welding quality, and reducing on-site welding workload. At the same time, the integrated wall panel 15, top plate 18 and steel truss floor deck 25 are also prefabricated structures, and the concrete base plate is poured in the factory, reducing on-site concrete pouring operations and improving on-site installation efficiency.

[0117] 3. Factory-installed integrated wall panels 15 is one of the requirements of MIC modular buildings. Its core value lies in: ensuring controllable quality of wall panels, reducing construction period, eliminating on-site wet work, reducing construction costs, saving labor, saving management expenses, reducing on-site installation accidents, reducing carbon emissions, and achieving integrated insulation, sound insulation, and surface decoration. It is the preferred solution for green and low-carbon projects.

[0118] 4. After the MIC modules are hoisted as a whole on site, they are connected by bolts to form a modular integrated prefabricated building structure system. Modular integrated buildings can complete more than 90% of the construction work in the factory. On site, only a small amount of work such as hoisting, handling pipeline connections at module splicing points and decoration is required.

[0119] 5. This application also includes a protective component 26, which has fireproof and waterproof effects.

[0120] 6. This invention is innovative, technologically advanced, easy to construct, highly flexible, safe and reliable, of excellent quality, economical, widely applicable, and highly adaptable. It conforms to current national policies and development directions and has a bright prospect for promotion. Through the above construction measures, the MIC module can be constructed in multiple layers, which is of profound significance for promoting technological progress in this industry and improving the technical level of enterprises.

[0121] In conclusion, this application represents a significant practice in industrialized building and intelligent construction. Its core function lies in systematically addressing numerous pain points of traditional construction methods in terms of efficiency, quality, safety, environmental protection, and labor dependence through factory prefabrication and rapid on-site assembly. Practical application has demonstrated that it significantly shortens construction time, improves building quality and precision, enhances construction safety, reduces environmental pollution, and offers excellent cost-effectiveness and flexibility. It is particularly suitable for projects with high requirements for schedule, quality, and environmental protection, or those facing limited site conditions. It represents a crucial trend in the construction industry's transformation towards greater efficiency, greener practices, and smarter technologies.

[0122] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A modular building with MIC (Micro-Integrated Microstructure) characteristics, include: Several MIC modules and connection node devices are provided, and adjacent MIC modules are stacked vertically or arranged side by side through the connection node devices. The MIC module includes a module frame, integrated wall panels, a top plate, and a steel truss floor deck. The integrated wall panels are installed on the side of the module frame, the top plate is installed on the top of the module frame, and the steel truss floor deck is installed on the bottom of the module frame. The modular frame includes modular steel columns, a main bottom steel beam, a secondary bottom steel beam, a main top steel beam, a secondary top steel beam, and node plates. The modular steel columns are connected to the main bottom steel beam and the main top steel beam, respectively. The secondary bottom steel beam is connected to the main bottom steel beam, and the secondary top steel beam is connected to the main top steel beam. The node plates are respectively located at both ends of the modular steel columns. The connection node device includes a first connector, a second connector, a first positioning member, and a fixing member. The first connector is disposed between the node plates of the MIC modules arranged in upper and lower layers and side by side. The first connector is positioned with the node plates by the positioning member. The second connector is connected to the module steel column of the MIC modules arranged in upper and lower layers and side by side by the fixing member. The MIC module is equipped with a detachable lifting head and a second positioning component on its top. Protective components are provided between adjacent MIC modules.

2. The MIC modular building according to claim 1, characterized in that, The number of main steel beams on the top of the module is two or more, and they are connected by the node plate to form a square-shaped module top frame. The number of secondary steel beams on the top of the module is two or more, and they are arranged in parallel within the module top frame. The module has two or more main steel beams connected by the node plate to form a square module bottom frame, and the module has two or more secondary steel beams arranged in parallel within the module bottom frame. The modular steel column is located between the top frame and the bottom frame of the module.

3. The MIC modular building according to claim 1, characterized in that, The number of integrated wall panels is two or more, one integrated wall panel is provided with a window frame, and the other integrated wall panel is provided with a door frame; The module frame contains integrated bathroom fixtures; A suspended ceiling is provided at the top plate, which is located within the module frame; A floor finishing layer is provided at the steel truss floor slab within the module frame.

4. The MIC modular building according to claim 1, characterized in that, The first connector includes a horizontal connecting plate and an anti-rotation plate. The anti-rotation plate is vertically disposed at the bottom of the horizontal connecting plate. The horizontal connecting plate is disposed between the node plates of the MIC modules stacked vertically. The anti-rotation plate is disposed between the node plates of the MIC modules arranged side by side.

5. The MIC modular building according to claim 4, characterized in that, The node plate is provided with positioning holes, the first positioning member is provided on the horizontal connecting plate and cooperates with the positioning holes, and the fixing member connects the node plate and the horizontal connecting plate.

6. The MIC modular building according to claim 5, characterized in that, The second connector and the module steel column are provided with connection holes. The connection holes include a first connection part and a second connection part. The first connection part and the second connection part are through hole structures and are connected to each other.

7. The MIC modular building according to claim 1, characterized in that, The protective components include rock wool filler, PE rods, and waterproof sealant.

8. The MIC modular building according to claim 7, characterized in that, The protective component also includes a fireproof plate that wraps around the steel column of the adjacent MIC module.

9. A method for constructing a MIC modular building, characterized in that, The MIC modular building described in any one of claims 1 to 8 comprises the following steps: S1: Production MIC module: (1) Assemble the modular steel columns, the main steel beams at the bottom of the module, the secondary steel beams at the bottom of the module, the main steel beams at the top of the module, the secondary steel beams at the top of the module, and the node plates and weld them together to form a modular frame; (2) Correct the above-mentioned welding deformation by using heavy pressure correction or flame correction methods to ensure that the dimensions of the module frame meet the design requirements; (3) Sandblast the surface of the module frame to remove rust and reach the Sa2.5 level rust removal standard. Apply primer, intermediate paint and topcoat to ensure that the coating thickness and adhesion meet the design requirements. After the coating is completed, conduct an appearance inspection to ensure that there are no defects such as missed coating or dripping. (4) Manufacturing integrated wall panels, roof slabs and steel truss floor decks; (5) Assemble the module frame, integrated wall panel, top plate and steel truss floor deck to form MIC module, and conduct acceptance inspection, checking the size, appearance quality and anti-corrosion coating. S2. Installation of multiple MIC modules: (1) Use a hoisting device to hoist multiple MIC modules to the designated position to form the first layer of MIC structure, and adjust the level, verticality, elevation, and spacing between each MIC module to meet the installation requirements. Install a connecting node device between adjacent MIC modules to connect the MIC modules arranged side by side. Remove the hoisting device and install the second positioning component. (2) Then, multiple MIC modules are hoisted to the designated position above the first layer of MIC structure by the hoisting device. First, they are positioned with the bottom structure by the second positioning component, and then the MIC modules stacked on the upper and lower layers are connected by the connecting node device to form the second layer of MIC structure. (3) Install door and window fittings; (4) Install suspended ceilings and integrated bathroom fixtures; (5) Install protective components between adjacent MIC modules.

10. The installation method of the MIC modular building according to claim 9, characterized in that, In step S2(4): Installation of the suspended ceiling: Marking lines: Use a level to mark horizontal points on each corner of the room and mark the level line. Measure from the level line to the designed height of the ceiling plus the material thickness, and use a chalk line to mark the level line along the wall. This is the bottom line of the secondary joists of the ceiling. Fixed hanging rods: The hanging rods are fixed with expansion bolts. The hanging rods are rust-proofed and fixed to the top plate with expansion bolts. Holes are drilled with an impact hammer, and the hole diameter is larger than the diameter of the expansion bolt. Install hanging rods on the module frame; Install the edge keel: The edge keel should be installed according to the design requirements. The L-shaped galvanized light steel strips should be fixed to the wall with self-tapping screws along the horizontal keel line on the wall. The wall should be fixed with nails. The spacing of the nails should not be greater than the spacing of the secondary keel of the ceiling. Install the main keel: The main keel should be suspended on the hanger rod. The main keel should be extended by butt joint. The butt joints of adjacent keels should be staggered. After the main keel is installed, it should be basically leveled. Install secondary keel: The secondary keel is installed tightly against the main keel; Installation of integrated bathroom fixtures: Inspect the work surface, check whether the profiles around the chassis of the integrated bathroom are deformed, whether the floor tiles are intact and without cracks, whether the tiled wall panels have chipped edges or corners, and whether there are cracks at the opening positions. Laying out lines: chassis positioning lines and elevation lines of the completed installation surface; The process includes: connecting and assembling the chassis drainage pipes; splicing and leveling the chassis; connecting pipelines before installing the wall panels; installing the wall panels according to the drawings; installing electrical systems on the ceiling; installing hardware, sanitary ware, and components on the ceiling and roof joists; finishing and cleaning the edges.

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