A steel structure module house based on intelligent construction and its design and assembly method

Abstract

The present invention discloses a steel structure module house based on intelligent construction and a design and assembly method. The house includes a box module, a roof module and a foundation module. The box module includes a rectangular frame, and the rectangular frame includes a main steel column, a main steel beam and a secondary steel beam. The upper and lower main steel beams along the first side in the length direction are hinged with internal partition wall columns to achieve reconstruction of the indoor space layout; the second side in the width direction is cross-fixed with adjustable flexible support units along the diagonal to provide lateral stability and span adaptability. Its horizontal frame includes a floor partition secondary beam fixed on the main steel beam to divide the horizontal frame into multiple rectangular areas, which is rigidly connected with an ALC strip composite plate, and the positioning of the internal partition wall columns is independent of the floor partition secondary beam arrangement. The present invention significantly improves the construction efficiency and spatial flexibility of steel structure module houses, the adaptability to layout adjustment and the universality of rapid disassembly and transportation under various intelligent construction methods.

Description

Technical Field

[0001] The present invention relates to the field of building technology, and in particular to a steel structure module house based on intelligent construction of standardized connection nodes and a design and assembly method thereof. Background Art

[0002] Traditional construction methods are inefficient, energy-intensive, polluting, and labor-intensive, making them unable to meet the current high-quality, fast-paced demands for building construction. These include rural revitalization, post-disaster reconstruction, and temporary infrastructure, which require fast, safe, and comfortable construction. Intelligent construction, integrating BIM, the Internet of Things, big data, and robotics, is a key path to upgrading the construction industry. It encompasses the entire design, production, and construction process, improving overall assembly efficiency and quality while ensuring the reliability of connection nodes.

[0003] Prefabricated buildings based on intelligent construction, particularly modular steel structures, utilize a new construction method of factory prefabrication and on-site assembly. This can significantly increase assembly rates, shorten construction periods, and achieve sustainable construction throughout the building's lifecycle. However, limitations remain: spatial rigidity and the limited size of box modules mean that long-span buildings can only be achieved by increasing the number of boxes. Existing connection nodes often improve assembly efficiency and quality through standardized designs, but neglect the ability to adapt to customized functional requirements. Existing design, production, and assembly processes often lack intelligence, and the design and production data are fragmented, hindering the coordination and optimization of the construction process. In engineering practice, on-site assembly, in particular, lacks flexibility and connection node designs more compatible with intelligent construction. Summary of the Invention

[0004] The present invention proposes a steel structure modular house and its design and assembly method based on intelligent construction, the purpose of which is: 1. to solve the problems of traditional modular house structural space rigidity, difficulty in coping with modular house layout adjustment and inability to make large spans; 2. to solve the problem of information fragmentation in the design and production process affecting the coordination and optimization of component connections in the construction process.

[0005] The technical solutions of the present invention are as follows:

[0006] A steel structure module house based on intelligent construction, including a box module, a roof module and a foundation module, the box module includes a rectangular parallelepiped frame, the rectangular parallelepiped frame includes main steel columns, main steel beams and secondary steel beams, the side of the rectangular parallelepiped frame in the length direction is the first side, and the side in the width direction is the second side, the first side includes two main steel beams arranged up and down, an inner partition wall column is hinged between the two main steel beams, the upper end of the inner partition wall column is provided with a mounting groove for the upper main steel beam to pass through, and the positioning of the inner partition wall column is independent of the floor partition secondary beam arrangement; the second side includes flexible support units cross-fixed along the diagonal line, and the support unit includes a length adjustment component; the horizontal frame includes a floor The secondary separation beam is fixed on the main steel beam and divides the horizontal frame into multiple rectangular areas. ALC strip composite panels are arranged in the rectangular areas. The positioning of the internal partition wall separation column is independent of the layout of the floor separation beam. The main steel column is provided with a long hole for connecting with the main steel beam. The main steel beam is a W-shaped steel beam, which includes an upper flange plate, a lower flange plate and a web plate. The left and right ends of the upper flange plate and the lower flange plate are provided with outwardly extending plug-in ends, and the plug-in ends are connected to the main steel column. The web plate between the upper flange plate and the lower flange plate is fixed with a first middle flange plate extending to the inside of the frame and beyond the rear side of the main steel column, and a second middle flange plate extending to the outside of the frame and flush with the front side of the main steel column. The extension length of the middle flange plate is greater than the extension length of the second middle flange plate, and the left and right end surfaces of the first middle flange plate and the second middle flange plate are in contact with the corresponding side surfaces of the main steel column on the corresponding side; the two ends of the flexible support unit are connected to the connecting plate fixed on the frame by bolts, and its body includes two sections of round steel bars connected by basket bolts; the installation groove includes two inverted L-shaped support plates symmetrically arranged parallel to the length direction of the main steel beam, and the horizontal plate at the upper end of the inverted L-shaped support plate is used to support the middle flange plate of the steel beam, namely the first middle flange plate and the second middle flange plate. The first middle flange plate and the second middle flange plate are respectively bolted to the inverted L-shaped support plate on the corresponding side, and a column top sealing plate is fixed to the bottom of the installation groove. The horizontal plate at the upper end of the inverted L-shaped support plate and the main steel beam The lower flange plate is provided with through holes corresponding to the modular spacing of the functional units, so that the installation position of the inner partition wall partition column can be selected according to the size of the functional module; the main steel column is a square steel tube, and the box modules are connected by an integrally manufactured standard connection module; the standard connection module includes an intermediate connection module, and the intermediate connection module includes a horizontally arranged intermediate connection plate, and the intermediate connection plate is provided with a connection portion connected to the main steel column, and the connection portion is a first limit and a second limit arranged diagonally along the main steel column, the first limit is a right-angled protrusion that matches an inner corner of the main steel column, and the second limit is a right-angled protrusion that matches the outer corner side wall opposite to the inner corner, and the square steel tube is fixed to the first limit and the second limit by bolts;The standard connection module also includes a column base connection module for connecting the main steel column and the foundation module. The column base connection module is connected to the embedded parts through a base plate. The base plate is provided with vertical connection parts that plug into the main steel column. The vertical connection parts are connected to the main steel column by bolts. The number of vertical connection parts corresponds to the number of main steel columns, and the shape of the base plate corresponds to the combination of the main steel columns. Reinforcement connectors are welded in the lower cavity of the main steel column. The reinforcement connectors are connected to the column base connection module by bolts that penetrate the main steel column and are arranged in an alternating manner.

[0007] Furthermore, a through hole for cooperating with the installation of a pipeline installation module is opened at a preset position on the lower part of the web of the main steel beam, so as to realize the hidden installation of the pipeline. The lower flange plate of the main steel beam can also be used to install the ceiling keel to cooperate with the installation of the ceiling module.

[0008] Furthermore, the intermediate connection module includes multiple groups of limit switches arranged in a matrix on the same intermediate connection plate, which are used to achieve single-column connection or multi-column combination connection, and the shape of the intermediate connection plate corresponds to the outline of the multi-column combination.

[0009] Furthermore, the column base connection module includes multiple groups of vertical connection parts arranged in a matrix on the same base plate, which are used to realize single column connection or multi-column combination connection, and the shape of its base plate corresponds to the outline of the multi-column combination.

[0010] Furthermore, the ALC strip combination panels are arranged according to the installation module, the length direction of the ALC strip combination panels is consistent with the length direction of the box module, and adjacent ALC strip combination panels are fixedly connected between the main steel beams in sequence by through bolts.

[0011] The present invention also provides a design method for a steel structure modular house based on intelligent construction, comprising:

[0012] S1. Build the frame box structure:

[0013] The first type of rigid body adopts a beam-column rigid connection system, where the main steel column and the main steel beam on the first side are welded to form a rigid connection node to constrain in-plane deformation;

[0014] The second type of rigid body adopts a column-beam hinge combined with a flexible support unit system, where the secondary steel beam is hinged to the main steel column, and a flexible support unit is installed between the main steel column and the secondary steel beam on the second side;

[0015] The third type of rigid body is to fix the main steel beam and the secondary steel beam on the main steel column to form a horizontal frame perpendicular to the axis of the main steel column, and the horizontal frame is divided into multiple rectangular areas by the floor partition secondary beam. The ALC strip composite plate is connected with the surrounding main steel beams, secondary steel beams and floor partition secondary beams through supporting, plugging and penetrating to form a floor rigid body.

[0016] S2. Construct a decoupled secondary structure that adapts to the changing interior functions:

[0017] a. Slide the inverted L-shaped support plate of the installation slot to the target position of the main steel beam, so that the internal partition wall column is positioned independently of the floor partition secondary beam, adapting to the change and update of the scale of the building functional module;

[0018] b. Arrange the ALC strip composite panels according to the installation module, and arrange the floor separation secondary beams between the main steel beams according to the customized length and load-bearing capacity of the ALC strip composite panels;

[0019] S3. Topology optimization component cross-section design under multi-disciplinary collaboration:

[0020] a. The first middle flange of the bidirectional flange structure of the Chinese-shaped steel beam is extended inward to support the ALC strip composite panels, while the second middle flange is extended outward to connect to the interior partition wall columns. The extension length of the first middle flange is 1.2-1.5 times that of the second middle flange. Pipeline channels and ceiling interfaces are integrated into the web to achieve integrated structure, equipment and decoration.

[0021] b. Flexible support units are used on the second side of the frame to reinforce the hinged joints between the main steel columns and secondary steel beams. Tightening the turnbuckle bolts creates pre-tension in the flexible support units, improving lateral stability. The flexible support units are concealed within the wall, synergistically enhancing the building's energy efficiency and sound insulation performance.

[0022] S4. Strengthening operations at key stress nodes:

[0023] a. The first side of the frame uses the upper and lower flanges of the main steel beam to extend outward to form a plug-in end, which is inserted into the long holes of the main steel columns on both sides. Combined with the fillet welds on the contact surface, a rigid connection is achieved;

[0024] b. Weld reinforcement connectors within the main steel column cavity. These connectors are secured to the column base connection modules using staggered bolts. The connectors between the modules are connected to the main steel column using a plug-in connection method with a multi-directional stress-distributing structure to enhance the strength of the square steel tube column base.

[0025] S5. Manufacture standardized connection nodes based on 3D printing technology:

[0026] a. Any number of three-way connections between the box modules are precisely connected through customized 3D-printed standard parts. The horizontal positioning of the main steel columns is achieved through a horizontally arranged intermediate connecting plate. The intermediate connecting plate is precisely positioned and installed with the main steel columns through the first limiter that is inserted into the inner wall of the column and the second limiter that is used to abut against the outer wall of the column in each direction. A double-layer bolt structure is then used to complete the rigid connection of the nodes.

[0027] b. Any number of column feet of the bottom box module are connected to the basic module space in three directions. They are all connected using customized 3D printed column foot connection modules. They are plugged into the main steel column through the base plate and the vertical connection part fixed on the base plate, and the column foot connection module is fixed to the main steel column by bolts arranged in an alternating manner.

[0028] The present invention also provides an assembly method for a steel structure modular house based on intelligent construction:

[0029] S1. In the workshop, cut and process the required components according to the design drawings. Then, connect and secure the upper and lower main steel beams to the main steel columns. Sequentially push the inner partition wall columns into the structural plane along the length of the main steel beams, pre-install them with bolts, and then connect them to the other main steel column. Adjust and calibrate the joints between the main steel beams and columns, then feed them into the welding robot workstation. Fillet weld the contact points between the beams and columns, completing the rigid connection between the main steel columns and the main steel beams. Adjust and calibrate the positions of the inner partition wall columns, tightening them to the two main steel beams. Bolts are used to complete the hinged connection between the upper and lower ends of the inner partition wall partition columns and the main steel beams, completing the assembly of the first side; after fixing the first side, the required number of floor partition secondary beams are pre-installed with bolts on the inner side of the main steel beam, and then the second side is assembled with the corresponding floor partition secondary beams in the forward direction; then the main steel column is fixedly connected to the secondary steel beam, and the flexible support unit is fixedly connected to the beam-column connection node in turn to complete the assembly of the second side; tighten the connecting bolts between the two sides of the floor partition secondary beam and the main steel beam to complete the assembly of the overall module frame;

[0030] S2. Place the ALC strip composite panels on the load-bearing structure formed by the middle flange of the main steel beam, the lower flange of the secondary steel beam, and the lower flange of the floor partition secondary beam. Connecting bolts are then inserted through the main steel beam web, the ALC strip composite panels, and the connecting plates of the secondary steel beam or floor partition secondary beam. Tighten the ends of the connecting bolts with nuts to complete the installation of the floor rigid body. Then, assemble the interior and exterior assembly modules to complete a safe, reliable, and fully functional box module.

[0031] S3. At the construction site, assemble the customized box modules according to the drawings. First, connect the first-floor box module to the base module via the column base connection module. Then, use the one-piece intermediate connection module to combine the second or more layers of box modules vertically and horizontally. Finally, secure the roof module to the top of the box modules to complete the assembly of the steel structure modular house.

[0032] Compared with the prior art, the present invention has the following positive effects:

[0033] (1) The present invention adjusts the functional areas within the building by providing a plurality of internal partition wall columns that can continuously adjust the installation position along the axis of the main steel beam. By customizing flexible support units of different sizes to adjust the building span to meet the needs of different spatial scales, the flexibility of the steel structure modular house is increased. The coordinated selection of modular assembled interior and exterior decoration significantly improves the assembly efficiency of the box module and improves the reliability and versatility of the connection nodes. By improving the adaptability of the structure and the versatility of standard parts, the impact of the information fragmentation in the design, production, and assembly data that cannot achieve full-process collaboration and optimization is offset.

[0034] (2) The present invention achieves the "dynamic reconfigurability" of the building plan layout through the complete decoupling design of the internal partition wall system and the floor structure. Under the same steel structure frame, more than 6 plan layout schemes can be generated. During renovation and upgrading, only the position of the internal partition wall columns needs to be adjusted, avoiding the disadvantage of traditional modular buildings that require the demolition of the entire floor slab, greatly improving the flexibility of the building plan layout in the box house.

[0035] (3) The design method proposed in this invention breaks the rigid thinking that floor partition secondary beams correspond to internal partition walls in traditional modular building design, and considers internal partition wall partition columns and floor partition secondary beams separately. Internal partition wall partition columns are only associated with the internal partition wall structure, and floor partition secondary beams are only associated with the ALC strip composite board structure. The direct structural association between internal partition wall partition columns and floor partition secondary beams is eliminated, and the adaptability of box modules and functional components is enhanced. While ensuring the safety and reliability of the structure, it can efficiently and collaboratively meet the diverse needs of building functions. In addition, the coordination and versatility are improved, and the adaptability of box modules is significantly improved.

[0036] (4) The 3D-printed intermediate connection module uses a reinforced part connected to a square steel tube, combined with a bidirectional vertical connection plate to achieve multi-directional stress dispersion. Through the coordination of robot welding and pre-positioning of printed parts, the connection accuracy between columns is controlled within ±0.5mm, solving the positioning problem of on-site high-altitude operations.

[0037] (5) The present invention realizes the modular integration of structure, equipment and decoration through the main steel beam web integrated pipeline installation module channel and the ceiling keel interface, reducing on-site cross-operation links by more than 40%, and compensating for the loss of collaborative efficiency caused by the fragmentation of design and production data.

[0038] (6) The first side frame of the present invention adopts a design method of rigid connection between columns and beams combined with hinged internal partition wall columns, which can achieve a large span design for the first side, effectively reducing the number of modular house boxes and the number of assembled repeated components, thereby saving construction costs.

[0039] (7) The first side frame column beam of the present invention is a welded rigid body, and the second side frame column beam and the support are connected by bolts. It can not only meet the industrialized construction mode of the entire box processing and overall transportation in the workshop, but also adapt to the various intelligent construction modes of workshop piece processing, piece transportation and on-site rapid assembly under the scene of transportation condition constraints, and has wide applicability.

[0040] (8) The first side frame column-beam rigid connection of the present invention adopts the method of reserving plug-in holes on the steel column to insert and position the steel beam and adopting fillet welds along the contact parts to achieve rigid connection, breaking the traditional steel beam flange and steel column full penetration weld rigid connection form, changing the multi-layer multi-pass welds at the same position into multi-position single-layer single-pass fillet weld connection, which can not only meet the workshop welding robot process requirements and avoid the quality defects of manual full penetration welds, but also reduce the weld inspection cost and speed up the welding assembly speed on the basis of significantly improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the first side elevation structure (including the roof structure) of a steel structure modular house based on intelligent construction according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the second side elevation structure of the steel structure modular house based on intelligent construction according to an embodiment of the present invention (excluding the roof structure);

[0043] Figure 3 Schematic diagram of the floor rigid body of a steel structure modular house based on intelligent construction according to an embodiment of the present invention;

[0044] Figure 4 for Figure 1 A local enlarged view of node A in the middle;

[0045] Figure 5 for Figure 4 Schematic diagram of the planar structure of the middle connection module;

[0046] Figure 6 for Figure 1 A partial enlarged view of the middle B node (the connection node between the inner partition wall column and the main steel beam);

[0047] Figure 7 for Figure 1 A partial enlarged view of the cross section of the middle node B (the connection node between the inner partition wall column and the main steel beam);

[0048] Figure 8 for Figure 1 A partial enlarged view of the middle C node;

[0049] Figure 9 for Figure 2 A local enlarged view of the D node in the middle;

[0050] Figure 10 Schematic diagram of the floor rigid structure (including the connection between the main steel columns, main steel beams and ALC strip composite panels).

[0051] Description of reference numerals:

[0052] 110. Main steel column; 120. Internal partition wall dividing column; 121. Column bottom connecting plate; 122. Column top sealing plate; 123. Installation groove; 1231. Inverted L-shaped support plate; 124. Intermediate connection module; 1241. First limit; 1242. Second limit; 125. Column foot connection module; 210. Main steel beam; 211. Upper flange plate; 212. First middle flange plate; 213. Second middle flange plate; 214. Lower flange plate; 215. Web plate; 220. Secondary steel beam; 230. Floor separation secondary beam; 240. Flexible support unit; 310. ALC strip composite plate; 320. Pipeline installation module. DETAILED DESCRIPTION

[0053] The technical solutions and technical effects of the present invention are described in detail below with reference to the embodiments and drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0054] like Figure 1 and Figure 2 As shown, a steel structure module house based on intelligent construction includes a box module, a roof module and a foundation module.

[0055] The box module includes a rectangular frame, and the rectangular frame includes a main steel column 110, a main steel beam 210 and a secondary steel beam 220. The side of the rectangular frame in the length direction is the first side, and the side in the width direction is the second side. The first side includes two main steel beams 210 arranged one above the other, and an internal partition wall column 120 is hinged between the two main steel beams 210. The second side includes a flexible support unit 240 cross-fixed along the diagonal line. The flexible support unit 240 is an assembleable, disassembleable and tensionable inclined support device. Optionally, the two ends of the flexible support unit 240 are connected to the connecting plate fixed on the frame by bolts, and its body includes two sections of round steel bars connected by basket bolts. The rectangular parallelepiped frame includes a horizontal frame. This horizontal frame is a rectangular frame vertically connected to the main steel columns 110 and comprises main steel beams 210 and secondary steel beams 220. Floor partitioning secondary beams 230 are also vertically connected between the main steel beams 210. These floor partitioning secondary beams 230 are fixed to the main steel beams 210 and divide the horizontal frame into multiple rectangular areas. ALC strip composite panels 310 are arranged within the rectangular areas. The internal partition wall columns 120 are positioned independently of the floor partitioning secondary beams 230.

[0056] like Figure 3As shown, the ALC strip combination panels 310 are arranged according to the installation module, the length direction of the ALC strip combination panels 310 is consistent with the length direction of the box module, and adjacent ALC strip combination panels 310 are fixedly connected between the main steel beams 210 in sequence by through bolts.

[0057] The length of the ALC strip composite panels 310 can be customized to accommodate adjustments to the assembled building layout. Preferably, the ALC strip composite panels 310 are internally provided with a double-layer steel mesh and utilize quartz sand instead of ordinary sand. This enhances the integrity of the ALC strip composite panels 310 and their local compressive strength after openings. Compared to ordinary concrete, the ALC strip composite panels 310 can more effectively withstand the tensile and shear forces of bolts.

[0058] Based on the dimensions of the modular house, ALC strip composite panels 310 of appropriate dimensions are selected and assembled. This optimizes steel usage and reduces construction costs while maintaining the same dimensions of the steel structure frame. Optionally, the length module is 2 meters, 3 meters, or 4 meters, and the width module is 0.6 meters.

[0059] Combine Figure 4 、 Figure 5 and Figure 6 As shown, in order to take into account both structural connection reliability and assembly convenience, the main steel column 110 is preferably a square steel tube with a long hole for connecting to the main steel beam 210. The main steel beam 210 is preferably a W-shaped steel beam, which includes an upper flange plate 211, a lower flange plate 214 and a web plate 215. The upper flange plate 211 and the lower flange plate 214 are both provided with outwardly extending plug ends at the left and right ends, and the plug ends pass through the long hole to connect to the main steel column 110. Figure 7 As shown, a first middle flange plate 212 extending toward the inside of the frame and beyond the rear side of the main steel column 110 and a second middle flange plate 213 extending toward the outside of the frame and flush with the front side of the main steel column 110 are fixed on the web 215 between the upper flange plate 211 and the lower flange plate 214. The extension length of the first middle flange plate 212 is greater than the extension length of the second middle flange plate 213. The left and right end surfaces of the first middle flange plate 212 and the second middle flange plate 213 are in contact with the corresponding side surfaces of the main steel column 110 on the corresponding side.

[0060] Optionally, combined Figure 10 As shown, a channel for installing a pipeline installation module 320 is provided at a preset position below the web 215 of the main steel beam 210, enabling concealed installation of pipelines. Optionally, a ceiling keel is mounted on the lower flange 214 of the main steel beam 210 to facilitate installation of the ceiling module, and the second middle flange 213 facilitates installation of the exterior module, achieving multiple uses for one beam and improving the efficiency of modular building assembly.

[0061] As a preferred embodiment of the present invention, Figure 7As shown, the upper end of the inner partition wall dividing column 120 is provided with a mounting slot 123 for the upper main steel beam 210 to pass through. The mounting slot 123 includes two inverted L-shaped support plates 1231 arranged symmetrically along the length of the steel beam, parallel to the length of the steel beam. The horizontal plate at the upper end of the inverted L-shaped support plate 1231 is used to support the steel beam middle flange plate. The first middle flange plate 212 and the second middle flange plate 213 are respectively bolted to the inverted L-shaped support plate 1231 on the corresponding side. The column top sealing plate 122 is fixed to the bottom of the mounting slot 123. The horizontal plate at the upper end of the inverted L-shaped support plate 1231 and the lower flange plate 214 of the main steel beam 210 are provided with through holes corresponding to the modular spacing of the functional units, so that the installation position of the inner partition wall dividing column 120 can be selected according to the size of the functional module. A column bottom connecting plate 121 is fixed to the lower end of the inner partition wall partition column 120 , and the inner partition wall partition column 120 is bolted to the upper flange plate 211 of the main steel beam 210 below through the column bottom connecting plate 121 .

[0062] like Figure 1 and Figure 2 As shown, preferably, the main steel column 110 is a square steel tube. The box modules are connected by an integrally manufactured standard connection module. Figure 4 、 Figure 5 and Figure 9 As shown, the standard connection module includes an intermediate connection module 124, which includes a horizontally arranged intermediate connection plate. The intermediate connection plate is provided with a connection portion for connecting to the main steel column 110. The connection portion is a first stopper 1241 and a second stopper 1242 arranged diagonally along the main steel column 110. The first stopper 1241 is a right-angled protrusion that matches an inner corner of the main steel column 110, and the second stopper 1242 is a right-angled protrusion that matches the outer corner side wall opposite the inner corner. The square steel tube is fixed to the first stopper 1241 and the second stopper 1242 by bolts. The intermediate connection module 124 includes multiple sets of stoppers arranged in a matrix on the same intermediate connection plate, which are used to achieve single-column connection or multi-column combination connection. The shape of the intermediate connection plate corresponds to the outline of the multi-column combination.

[0063] As a preferred embodiment of the present invention, Figure 8As shown, the standard connection module also includes a column base connection module 125 for connecting the main steel column 110 and the foundation module. The column base connection module 125 is connected to the embedded parts through a base plate. The base plate is provided with a vertical connection portion that is plugged into the main steel column 110. The vertical connection portion is connected to the main steel column 110 by bolts. The number of vertical connection portions corresponds to the number of main steel columns 110, and the shape of the base plate corresponds to the combination form of the main steel columns 110. Reinforcement connectors are welded in the lower cavity of the main steel column 110. The reinforcement connectors are connected to the column base connection module 125 by bolts that penetrate the main steel column 110 and are arranged in an upper and lower staggered manner. The column base connection module 125 includes multiple groups of vertical connection portions arranged in a matrix on the same base plate, which are used to realize single column connection or multi-column combination connection. The shape of its base plate corresponds to the outline of the multi-column combination.

[0064] When designing the box frame, first divide the six-sided rigid body of the box frame into three categories:

[0065] The first side of the box frame is defined as a Class I rigid body, required to accommodate door and window openings on the building facade. Therefore, the main steel columns 110 and main steel beams 210 are rigidly connected. The columns and beams share and transmit the vertical and horizontal loads acting on the plane, constraining deformation within the plane and limiting its horizontal, vertical, and axial displacement. The internal partition wall columns 120, hinged between the upper and lower main steel beams 210, reduce the mid-span deflection of the main steel beams 210 and serve as supporting members at both ends of the internal partition wall to coordinate with the room layout.

[0066] The second side is defined as a second type of rigid body, which is hinged to the secondary steel beam 220 through the main steel column 110, and an additional flexible support unit 240. The main steel column 110 and the main steel beam 210 are hinged to bear and transfer the vertical load on the plane. The main steel column 110, the main steel beam 210 and the flexible support unit 240 form a triangular stable structure, which bears and transfers the horizontal load on the plane, and jointly constrains the deformation within the plane, limiting the displacement of the plane in the horizontal direction, vertical direction and rotation direction around the axis. The second type of rigid body is generally a special function room partition wall of a building gable or another box unit. The wall thickness can be increased to hide the flexible support unit 240 inside the wall, which can jointly meet the building energy saving and sound insulation requirements.

[0067] The horizontal upper and lower floors or ground are defined as the third type of rigid body, which is enclosed by the main steel columns 110, the main steel beams 210 and the secondary steel beams 220 or the floor separation secondary beams 230, and the ALC strip composite panels 310 are connected to the surrounding main steel beams 210, the secondary steel beams 220 and the floor separation secondary beams 230 by supporting, plugging and penetrating to form a floor rigid body, which jointly bears and transmits the horizontal load borne by the plane, constrains the deformation within the plane, and transmits the vertical load borne by the floor to the lower main steel columns 110 and the inner partition wall separation columns 120.

[0068] The design steps are:

[0069] S1. Build the frame box structure:

[0070] The first type of rigid body adopts a beam-column rigid connection system, where the main steel column 110 and the main steel beam 210 on the first side are welded to form a rigid connection node to constrain in-plane deformation.

[0071] The second type of rigid body adopts a column-beam hinged system combined with a flexible support unit 240, hinges the secondary steel beam 220 with the main steel column 110, and installs the flexible support unit 240 between the main steel column 110 and the secondary steel beam 220 on the second side.

[0072] The third type of rigid body fixes the main steel beam 210 and the secondary steel beam 220 on the main steel column 110 to form a horizontal frame perpendicular to the main steel column 110, and divides the horizontal frame into multiple rectangular areas through the floor partition secondary beam 230, and connects the ALC strip composite panel 310 with the surrounding main steel beam 210, secondary steel beam 220, and floor partition secondary beam 230 to form a floor rigid body through supporting, plugging, and penetration.

[0073] S2. Construct a decoupled secondary structure that adapts to the changing interior functions:

[0074] a. Slide the inverted L-shaped support plate 1231 of the mounting groove 123 to the target position of the main steel beam 210, so that the inner partition column 120 is positioned independently of the floor partition secondary beam 230 to adapt to the changes and updates of the building functional module scale.

[0075] b. Arrange the ALC strip composite panels 310 according to the installation module, and arrange the floor separation secondary beams 230 between the main steel beams 210 according to the custom length and load-bearing capacity of the ALC strip composite panels 310 .

[0076] S3. Topology optimization component cross-section design under multi-disciplinary collaboration:

[0077] a. The first middle flange plate 212 of the bidirectional flange structure of the Chinese-shaped steel beam is extended inward to support the ALC strip composite plate 310, and the second middle flange plate 213 is extended outward to connect to the inner partition wall partition column 120; the extension length of the first middle flange plate 212 is 1.2-1.5 times that of the second middle flange plate 213; the pipeline channel and ceiling interface are integrated in the web plate 215 to achieve integrated structure and equipment decoration.

[0078] b. Flexible support units 240 are used on the second side of the frame to reinforce the hinged joints between the main steel columns 110 and the secondary steel beams 220. Tightening the turnbuckle bolts creates pre-tension in the flexible support units 240, improving lateral stability. The flexible support units 240 are concealed within the wall, synergistically improving the building's energy efficiency and sound insulation performance.

[0079] When the extension length of the first middle flange plate 212 is 108 mm and the extension length of the second middle flange plate 213 is 72 mm, that is, the ratio of the two is 1.5:1, the deflection of the ALC strip composite plate 310 is reduced by 5.6%, and the stress concentration of the beam web 215 is reduced by 12%.

[0080] S4. Strengthening operations at key stress nodes:

[0081] a. The first side of the frame uses steel beams with upper and lower flanges extending outwards to insert into the long holes of the steel columns on both sides, and the corner welds on the contact surface are combined to achieve a rigid connection;

[0082] b. Welding a reinforcement connector in the cavity of the main steel column 110, the reinforcement connector is fixed to the column base connection module 125 using bolts arranged in an upper and lower staggered manner; the connector between the modules and the main steel column 110 is connected by plugging in a multi-directional stress distribution structure to enhance the strength of the square steel column base;

[0083] S5. Manufacture standardized connection nodes based on 3D printing technology:

[0084] a. Any number of three-way connections between the box modules are precisely connected through customized 3D-printed standard parts. The horizontal positioning of the main steel column 110 is achieved through a horizontally arranged intermediate connecting plate. The intermediate connecting plate is precisely positioned and installed with the main steel column 110 through a first limiter 1241 that is inserted into the inner wall of the column and a second limiter 1242 that is used to abut against the outer wall of the column in each direction. A double-layer bolt structure is then used to complete the rigid connection of the node.

[0085] b. Any number of column feet of the bottom box module are connected to the basic module space in three directions, and are all connected using customized 3D printed column foot connection modules 125. They are plugged into the main steel column 110 through the bottom plate and the vertical connection part fixed to the bottom plate, and the column foot connection module 125 is fixed to the main steel column 110 by bolts arranged in an alternating manner.

[0086] During assembly, the measured gap between the right-angle protrusion and the 110 inner angle of the main steel column is 0.18mm. The module assembly accuracy after welding is ±0.5mm, which meets the accuracy requirements of the "Steel Structure Engineering Construction Quality Acceptance Standard" GB50205-2020.

[0087] To verify the dynamic adaptability of the structure under the decoupling design, load combinations were applied to the optimized nodes. The sliding performance of the hinged internal partition wall columns 120, the stress redistribution capacity of the flexible support units 240, and the multi-directional load distribution efficiency of the bidirectional flange nodes were verified through numerical simulation.

[0088] The following is the assembly method of the steel structure modular house of this embodiment:

[0089] S1. In the workshop, cut and process the required parts according to the design drawings, then plug and fix the upper and lower main steel beams 210 and the main steel columns 110, push the inner partition wall partition columns 120 into the structural plane along the length direction of the main steel beam 210 in sequence, pre-install them with bolts, and then connect them with another main steel column 110; adjust and calibrate the joints between the main steel beam 210 and the main steel column 110, send them to the welding robot workstation, and use fillet welds to weld the contact points between the main steel beam 210 and the main steel column 110 to complete the rigid connection between the main steel column 110 and the main steel beam 210; adjust and calibrate the position of the inner partition wall partition column 120, tighten the connecting bolts between it and the two main steel beams 210, and complete The upper and lower ends of the inner partition wall partition column 120 are hingedly connected to the main steel beam 210 to complete the assembly of the first side; fix the first side, pre-install the required number of floor partition secondary beams 230 and the inner side of the main steel beam 210 with bolts in turn, and then assemble the second side and the corresponding floor partition secondary beams 230 in the forward direction; then fix the main steel column 110 and the secondary steel beam 220, and fix the two ends of the flexible support unit 240 to the connecting plate at the connection node between the secondary steel beam 220 and the main steel column 110 in turn to complete the assembly of the second side; tighten the connecting bolts between the two sides of the floor partition secondary beam 230 and the main steel beam 210 to complete the assembly of the overall module frame.

[0090] S2. Place the ALC strip composite panel 310 on the load-bearing structure formed by the middle flange plate of the main steel beam 210, the lower flange plate 214 of the secondary steel beam 220, and the lower flange plate 214 of the floor partition secondary beam 230. Use connecting bolts to pass through the web 215 of the main steel beam 210, the ALC strip composite panel 310, and the secondary steel beam 220 or the floor partition secondary beam 230 in sequence, and tighten the two ends of the connecting bolts with nuts to complete the installation of the floor rigid body. Then assemble the interior module and the exterior assembly module to complete a safe, reliable, and fully functional box module.

[0091] S3. At the construction site, the customized box modules are assembled according to the drawings. First, the first-layer box module is connected to the base module via the column base connection module 125. Then, the corresponding main steel columns 110 of the upper-layer box modules and / or adjacent box modules are sequentially connected using the one-piece intermediate connection module 124. Finally, the roof module is fixedly connected to the top of the box module to complete the assembly of the steel structure modular house.

[0092] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. The scope of the present invention is defined by the claims rather than the foregoing description.

Claims

1. A steel structure modular house based on intelligent construction, comprising a box module, a roof module and a foundation module, characterized in that: The box module comprises a rectangular parallelepiped frame, the rectangular parallelepiped frame comprises a main steel column (110), a main steel beam (210) and a secondary steel beam (220), the side surface of the rectangular parallelepiped frame in the length direction is a first side surface, and the side surface in the width direction is a second side surface, the first side surface comprises two main steel beams (210) arranged above and below, an inner partition wall column (120) is hingedly connected between the two main steel beams (210), and an upper end of the inner partition wall column (120) is provided with a mounting groove (123) for the upper main steel beam (210) to pass through, Flexible support units (240) are fixed along the diagonal cross of the second side surface, and the flexible support units (240) include length adjustment components; the rectangular parallelepiped frame includes a horizontal frame, and the horizontal frame includes a floor partition secondary beam (230), and the floor partition secondary beam (230) is fixed on the main steel beam (210) and divides the horizontal frame into a plurality of rectangular areas, and the ALC strip composite panels (310) are arranged in the rectangular areas; the positioning of the internal partition wall partition columns (120) is independent of the arrangement of the floor partition secondary beam (230); The main steel column (110) is provided with a long hole for connecting to the main steel beam (210); the main steel beam (210) is a W-shaped steel beam, which includes an upper flange plate (211), a lower flange plate (214) and a web plate (215); both left and right ends of the upper flange plate (211) and the lower flange plate (214) are provided with plug ends extending outward, and the plug ends pass through the long hole and are connected to the main steel column (110); a web plate (215) between the upper flange plate (211) and the lower flange plate (214) is fixed with a plug extending into the frame and extending beyond the main steel column (110) A first middle flange plate (212) on the rear side surface and a second middle flange plate (213) extending outward from the frame and flush with the front side surface of the main steel column (110), wherein the extension length of the first middle flange plate (212) is greater than the extension length of the second middle flange plate (213), and the left and right end surfaces of the first middle flange plate (212) and the second middle flange plate (213) are in contact with the corresponding side surfaces of the corresponding side main steel column (110); the two ends of the flexible support unit (240) are connected to the connecting plate fixed to the frame by bolts, and the body thereof comprises two sections of round steel bars connected by basket bolts; The mounting groove (123) includes two inverted L-shaped support plates (1231) symmetrically arranged parallel to the length direction of the main steel beam (210). The horizontal plate at the upper end of the inverted L-shaped support plate (1231) is used to support the steel beam middle flange plate, namely the first middle flange plate (212) and the second middle flange plate (213). The first middle flange plate (212) and the second middle flange plate (213) are respectively bolted to the inverted L-shaped support plate (1231) on the corresponding side. A column top sealing plate (122) is fixed to the bottom of the mounting groove (123). The inverted L-shaped support plate (1231) The upper end transverse plate and the lower flange plate (214) of the main steel beam (210) are provided with through holes corresponding to the modular spacing of the functional units, and the installation position of the inner partition wall partition column (120) can be determined according to the size of the functional module; the main steel column (110) is a square steel tube, and the box modules are connected by an integrally manufactured standard connection module; the standard connection module includes an intermediate connection module (124), and the intermediate connection module (124) includes a horizontally arranged intermediate connection plate, and the intermediate connection plate is provided with a connection portion connected to the main steel column (110). The connecting portion is a first limiter (1241) and a second limiter (1242) arranged diagonally along the main steel column (110), wherein the first limiter (1241) is a right-angled protrusion matched with an inner corner of the main steel column (110), and the second limiter (1242) is a right-angled protrusion matched with the outer corner side wall opposite to the inner corner. The square steel tube is fixed to the first limiter (1241) and the second limiter (1242) by bolts; the standard connection module also includes a column foot connection module (125) for connecting the main steel column (110) and the basic module. The foot connection module (125) is connected to the embedded part through a bottom plate. A vertical connection portion plugged into the main steel column (110) is provided on the bottom plate. The vertical connection portion and the main steel column (110) are connected by bolts. The number of the vertical connection portions corresponds to the number of the main steel columns (110). The shape of the bottom plate corresponds to the combination form of the main steel columns (110). A reinforcement connection piece is welded in the lower cavity of the main steel column (110). The reinforcement connection piece is connected to the column foot connection module (125) by bolts that penetrate the reinforcement connection piece and the main steel column (110) and are arranged in an upper and lower staggered manner.

2. The steel structure modular house based on intelligent construction according to claim 1, characterized in that: A through hole for cooperating with the installation of a pipeline installation module (320) is provided at a preset position below the web plate (215) of the main steel beam (210), so as to realize concealed installation of the pipeline. The lower flange plate (214) of the main steel beam (210) can also be used to install a ceiling keel, cooperating with the installation of the ceiling module.

3. The steel structure modular house based on intelligent construction according to claim 1, characterized in that: The intermediate connection module (124) comprises a plurality of limit groups arranged in a matrix on the same intermediate connection plate, and is used to realize single-column connection or multi-column combination connection, wherein the shape of the intermediate connection plate corresponds to the outline of the multi-column combination.

4. The steel structure modular house based on intelligent construction according to claim 1, characterized in that: The column foot connection module (125) comprises a plurality of groups of vertical connection parts arranged in a matrix on the same base plate, and is used to realize single column connection or multi-column combination connection, and the shape of the base plate corresponds to the outline of the multi-column combination.

5. The steel structure modular house based on intelligent construction according to claim 1, characterized in that: The ALC strip-shaped combined panels (310) are arranged according to the installation module, the length direction of the ALC strip-shaped combined panels (310) is consistent with the length direction of the box module, and adjacent ALC strip-shaped combined panels (310) are fixedly connected between corresponding main steel beams (210) in sequence by through bolts.

6. The design method of a steel structure modular house based on intelligent construction according to any one of claims 1 to 5, characterized in that include: S1. Build the frame box structure: The first type of rigid body adopts a beam-column rigid connection system, where the main steel column (110) and the main steel beam (210) on the first side are welded to form a rigid connection node to constrain in-plane deformation; The second type of rigid body adopts a column-beam hinged combined with a flexible support unit (240) system, hinges the secondary steel beam (220) with the main steel column (110), and installs the flexible support unit (240) between the main steel column (110) and the secondary steel beam (220) on the second side; The third type of rigid body is to fix the main steel beam (210) and the secondary steel beam (220) on the main steel column (110) to form a horizontal frame perpendicular to the axis of the main steel column (110), and the horizontal frame is divided into multiple rectangular areas by the floor partition secondary beam (230), and the ALC strip composite plate (310) is connected to the surrounding main steel beam (210), the secondary steel beam (220), and the floor partition secondary beam (230) by supporting, plugging, and penetrating to form a floor rigid body; S2. Construct a decoupled secondary structure that adapts to the changing interior functions: a. Slide the inverted L-shaped support plate (1231) of the mounting groove (123) to the target position of the main steel beam (210), so that the inner partition wall column (120) is positioned independently of the floor partition secondary beam (230), adapting to the change and update of the scale of the building functional module; b. Arrange the ALC strip composite panels (310) according to the installation module, and arrange the floor separation secondary beams (230) between the main steel beams (210) according to the custom length and bearing capacity of the ALC strip composite panels (310); S3. Topology optimization component cross-section design under multi-disciplinary collaboration: a. The first middle flange plate (212) of the bidirectional flange structure of the Chinese-shaped steel beam is extended inward to support the ALC strip composite plate (310), and the second middle flange plate (213) is extended outward to connect to the inner partition wall partition column (120); wherein the extension length of the first middle flange plate (212) is 1.2-1.5 times that of the second middle flange plate (213); pipeline channels and ceiling interfaces are integrated in the web plate (215) to achieve integrated structure and equipment decoration; b. A flexible support unit (240) is used on the second side of the frame to reinforce the hinged joint between the main steel column (110) and the secondary steel beam (220), and the turnbuckle bolts are tightened to generate pre-tension in the flexible support unit (240) to improve lateral stability; The flexible support unit (240) is hidden in the wall to synergistically improve the energy saving and sound insulation performance of the building; S4. Strengthening operations at key stress nodes: a. The first side of the frame is formed by extending the upper and lower flanges of the main steel beam (210) to form a plug-in end, which is inserted into the long holes of the main steel columns (110) on both sides, and the corner welds of the contact surface are combined to achieve a rigid connection; b. Welding a reinforcement connector in the cavity of the main steel column (110), the reinforcement connector is fixed to the column base connection module (125) using bolts arranged in an upper and lower staggered manner; the connector between the modules is connected to the main steel column (110) by plugging in a multi-directional stress dispersion structure to enhance the strength of the square steel tube column base; S5. Manufacture standardized connection nodes based on 3D printing technology: a. Any number of three-way connections between the box modules are precisely connected through customized 3D printed standard parts, and the horizontal positioning of the main steel column (110) is achieved through a horizontally arranged intermediate connecting plate; and the first limiter (1241) on the intermediate connecting plate, which is inserted into the inner wall of the column, and the second limiter (1242) for being tightly attached to the outer wall of the column in each direction, are precisely positioned and installed with the main steel column (110), and then a double-layer bolt structure is used to complete the rigid connection of the node; b. Any number of column feet of the bottom box module are connected to the basic module space in three directions, and are all connected by customized 3D printed column foot connection modules (125). They are plugged into the main steel column (110) through the bottom plate and the vertical connection part fixed on the bottom plate, and the column foot connection module (125) is fixed to the main steel column (110) by bolts staggered up and down.

7. The method for assembling a steel structure modular house based on intelligent construction according to any one of claims 1 to 5, characterized in that: S1. In the workshop, according to the design drawings, the required parts are cut and processed, and then the upper and lower main steel beams (210) are plugged and fixed to the main steel column (110), and the inner partition wall partition column (120) is pushed into the structural plane along the length direction of the main steel beam (210) and pre-installed with bolts, and then connected to the other main steel column (110); the main steel beam (210) and the main steel column (110) are adjusted and calibrated at the splicing node, and sent to the welding robot workstation, and the main steel beam (210) and the main steel column (110) are welded with fillet welds at the contact point, completing the rigid connection between the main steel column (110) and the main steel beam (210); the position of the inner partition wall partition column (120) is adjusted and calibrated, and the connection bolts between it and the two main steel beams (210) are tightened. Bolt, complete the hinged connection between the upper and lower ends of the inner partition wall partition column (120) and the main steel beam (210), and complete the assembly of the first side; fix the first side, pre-install the required number of floor partition secondary beams (230) and the inner side of the main steel beam (210) with bolts, and then assemble the second side with the corresponding floor partition secondary beam (230) in the forward direction; then fix the main steel column (110) and the secondary steel beam (220), and successively connect the two ends of the flexible support unit (240) with the connecting plate at the connection node between the secondary steel beam (220) and the main steel column (110) to complete the assembly of the second side; tighten the connecting bolts between the two sides of the floor partition secondary beam (230) and the main steel beam (210), and complete the assembly of the overall module frame; S2. The ALC strip composite plate (310) is placed on the load-bearing structure formed by the middle flange plate of the main steel beam (210), the lower flange plate (214) of the secondary steel beam (220) and the lower flange plate (214) of the floor partition secondary beam (230), and the connecting bolts are sequentially passed through the web plate (215) of the main steel beam (210), the ALC strip composite plate (310) and the connecting plate of the secondary steel beam (220) or the floor partition secondary beam (230), and the two ends of the connecting bolts are fastened by tightening nuts to complete the installation of the floor rigid body, and then the interior module and the exterior assembly module are assembled to complete a safe, reliable and fully functional box module; S3. At the construction site, the customized box modules are assembled according to the drawings. First, the first-layer box module is connected to the base module through the column base connection module (125). Then, the corresponding main steel columns (110) of the upper box modules and / or adjacent box modules are connected in sequence using the one-piece intermediate connection module (124). Finally, the roof module is fixedly connected to the top of the box module to complete the assembly of the steel structure module house.

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