General construction method for modular integrated building

Abstract

The invention provides a universal construction method for a modular integrated building, which comprises the following steps of: 1) prefabricating modular functional units and connecting nodes in a factory according to a building design scheme; 2) splicing box-type wall unit modules and / or aisle unit modules in a factory or a construction site; (3) leveling, paying off and positioning the building foundation on the construction site, and determining the installation datum line, the assembly position and the elevation of the box-type wall unit module and / or the aisle unit module; 4) hoisting and pre-positioning the bottom wall unit module and / or the aisle unit module; the construction method comprises the steps of (1) connecting the wall unit modules and the aisle unit modules, (2) fixing the connecting nodes after the connecting nodes are in butt joint, and sequentially completing fastening between the adjacent wall unit modules and fastening between the aisle unit modules, and (3) repeating the steps (4) and (5), hoisting the upper wall unit modules and the upper aisle unit modules, and achieving vertical stacking and plane expansion through the connecting nodes The construction method is easy and convenient to operate, high in efficiency and convenient to reconstruct and reconstruct.

Description

Technical Field

[0001] This invention relates to the technical field of construction methods for modular integrated buildings using steel, wood, and concrete. Background Technology

[0002] Modular integrated building is an industrialized construction technology that breaks down a building into three-dimensional spatial units with independent functions. All prefabrication work, including structure, decoration, equipment, and pipelines, is completed in a factory, and then the units are transported to the site for rapid assembly. It is an important form of industrialized building production. On the construction site, only the connection and filling between modules are required, greatly improving on-site construction efficiency and reducing the impact on the construction site.

[0003] However, existing modular building construction still faces numerous technical challenges: First, current construction methods fail to address standardized construction issues in scenarios involving mixed materials and modular assembly of boxes and panels. Specifically, the connection of modules made of different materials such as steel, wood, and concrete lacks a unified construction process, requiring customized installation procedures for each material combination or reliance on on-site skilled workers. This results in cumbersome operations, long construction cycles, and high costs. Second, on-site installation relies heavily on welding and wet work, which is not only inefficient but also highly susceptible to environmental factors, making it difficult to guarantee construction quality. Third, within a single-story building plan, multiple modules are often used to fill walls on-site, such as to create walkways or spaces of varying sizes. The installation process of the box-type modules and the on-site-filled lightweight wall panels becomes disconnected, requiring additional connection procedures and hindering integrated construction. Fourth, during later renovations or demolitions, disassembly is difficult, making it hard to reuse modules or rebuild them in other locations.

[0004] Therefore, there is an urgent need for a standardized and compatible universal construction method to achieve integrated installation of modules of different materials and components of different shapes, thereby further improving construction efficiency and saving costs. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the existing technology by providing a modular integrated building general construction method that can not only achieve standardized construction of different material modules, but also standardize the construction of complex shapes such as box-type and sheet-like walls, thereby further improving the industrialization of construction.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A general construction method for modular integrated buildings includes the following steps:

[0008] 1) Factory-prefabricated building modules: Based on the architectural design scheme, modular functional units and connection nodes are prefabricated; the functional units include single wall panels and single floor panels; the connection nodes include corner fittings, dovetail connecting plates, component dovetail connectors, and component beams and columns. The corner fittings provide a connection reference, and the dovetail connecting plates connect the corner fittings and the component dovetail connectors; the component dovetail connectors have a standard surface and component connectors, and the material and structure of the component connectors are adapted to the material and structure of the component beams and columns; the load-bearing surfaces of the component beams and columns have pre-set installation interfaces, which are adapted to the frame and material of the pre-connected functional units, and the ends of the component beams and columns have connector interfaces that mate with the component connectors; the corner fittings and dovetail connecting plates are fixedly connected in the factory according to a preset quantity;

[0009] 2) Assemble box-type wall unit modules and / or passageway unit modules in the factory or construction site: Pre-positioning is achieved by inserting the dovetail protrusion of the component dovetail connector into the dovetail groove of the dovetail connecting plate; one corner piece, two or more dovetail connecting plates, two dovetail connectors of the above components, and two component beams and columns are connected to form an L-shaped frame. This L-shaped frame serves as an independent connection node for mutual connection between L-shaped frame connection nodes or for connection with single wall panels and single floor panels of modular functional units; after the L-shaped frame connection nodes and single wall panels are combined, they are fixed by locking components to form a wall unit module. The wall units are cross-interlocked to form a three-dimensional box-type wall unit module; after the L-shaped frame connection nodes and single floor panels are combined, they are fixed by locking components to form a passageway unit module.

[0010] 3) On-site foundation positioning: Level and lay out the building foundation on the construction site to determine the installation baseline, assembly position and elevation of the box-type wall unit modules and / or passage unit modules;

[0011] 4) Installation and pre-positioning of the bottom wall unit modules and / or corridor unit modules: The prefabricated wall unit modules are installed to the pre-set positions on the building foundation, and the pre-positioning of the bottom wall is completed by interlocking the connecting nodes on the wall unit modules; the prefabricated corridor unit modules are installed to the pre-set positions on the building foundation, and the pre-positioning of the bottom corridor is completed by interlocking the connecting nodes on the corridor unit modules and the connecting nodes on the wall unit modules.

[0012] 5) Node locking and fixing: Fix the nodes with preset connection holes by using preset accessories to connect them, and then complete the fastening between adjacent wall unit modules and between the nodes and the corridor unit modules in sequence;

[0013] 6) Upper wall and multi-building space expansion: Based on the architectural design scheme, repeat steps 4) and 5), hoist the upper wall unit modules and passage unit modules, and realize the stacking and planar expansion of the upper and lower layers through the connection nodes to complete the splicing and fastening of all building spaces.

[0014] The building structure obtained using the above-described modular integrated building general construction method can be easily modified and infilled later. For later modifications, simply disassemble the locking devices at the connecting nodes, and then separate the modular functional units and connecting node components. If additional walls are needed, wall panels are laterally hung through the pre-set installation interfaces on the component beams and columns, and then fixed in place using locking devices. This method is not only simple and efficient, but also does not damage the modular functional units and most of the connecting nodes, allowing for reuse and cost savings.

[0015] The corner fittings are generally made of materials suitable for connecting steel, wood, and concrete modules. Depending on the different stress conditions in the building design, corner fittings made of steel, aluminum, or wood are used. For applications involving multi-story buildings, humid environments, or high stress, cubic corner fittings made of welded steel or aluminum, or cast iron or cast aluminum, are used. When the corner fitting is made of steel or aluminum, it is connected and fixed to the dovetail joint plate using countersunk bolts, and further reinforced by welding along the gap between the plates. When the corner fitting is made of wood, it can be fixed to the dovetail joint plate using multi-directional nails. One corner fitting can be configured with 1-6 dovetail joint plates.

[0016] Furthermore, the length and width dimensions of the dovetail groove connecting plate are consistent with the corresponding installed corner piece.

[0017] Furthermore, the dovetail groove connecting plate is provided with a dovetail groove, a first connecting hole for connecting the fixing corner piece to the dovetail groove connecting plate, and a second connecting hole for connecting the fixing component dovetail groove connector to the dovetail groove connecting plate. The first connecting hole for connecting the corner piece is located inside the opening of the dovetail groove and is a countersunk through hole; the second connecting hole for connecting the component dovetail groove connector is located outside the opening and is a stepped mating hole. The dovetail groove can be standardized, with its height prefabricated to be 80% of the length of the dovetail groove connecting plate, the maximum width of the dovetail groove opening to be 50% of the length of the dovetail groove connecting plate, and the tenon width of the dovetail groove being the groove width minus 20mm and the depth being 20mm.

[0018] Furthermore, the standard surface of the dovetail connector of the component is provided with a dovetail protrusion that matches the dovetail groove of the dovetail connecting plate and a third connecting hole that matches the second connecting hole of the dovetail connecting plate. The dovetail protrusion and the dovetail groove of the dovetail connecting plate are engaged to achieve pre-positioning, and the third connecting hole is used to fasten to the dovetail connecting plate. The component connector is a pre-designed connection structure for component beams and columns made of any one or more materials such as steel, wood, and concrete.

[0019] When the component beams and columns are engineered wood, H-beams, steel square tubes, or concrete beams and columns, the component connectors are respectively timber connectors, H-beam connectors, strong bolts, or bent ribbed steel bars, and the timber connectors and H-beam connectors are provided with connection holes.

[0020] Furthermore, the standard surface dimensions are consistent with the dovetail groove connecting plate used in conjunction with it; the height of the dovetail protrusion is 80% of the length of the corresponding dovetail groove connecting plate, the maximum width is 50% of the length of the corresponding dovetail groove connecting plate, the minimum width is the maximum width minus 20mm, and the depth is 20mm; the third connecting hole is located at the connection between the dovetail protrusion and the standard surface, and its portion on the dovetail protrusion is a through hole, while its portion on the standard surface is divided into stepped mating holes. After the second connecting hole and the third connecting hole are aligned, a complete through-rod and limiting functional connection structure is formed, enabling bolt through-and-fasten fastening.

[0021] If the pre-designed component beams and columns are made of engineered wood, the component beams and columns have wall fixing grooves on the wall-facing side; the connector interface at the end is a groove, which is fitted and plugged into the wooden connecting plate of the component dovetail groove connector for fixed connection.

[0022] If the preset component beam or column is an H-beam, the end connector interface is the web end of the H-beam, and the corresponding component connector is two welded connecting plates. The web end of the H-beam is inserted into the two connecting plates of the component dovetail groove connector and fixed by bolts.

[0023] If the pre-designed component beams and columns are steel square tubes, the end connector interface is an end plate, the end plate is provided with multiple bolt holes, and the component connector is a number of connecting bolts.

[0024] If the pre-designed component beams and columns are concrete beams and columns, the connectors of the component dovetail groove connectors are welded bent ribbed steel bars, which are pre-embedded and fixed during concrete pouring.

[0025] The locking component is a fastener adapted to the connection and fixation of various adjacent units / modules. The fastener is selected according to the material, configuration, stress level and installation scenario of the connected unit / module. It is used to fasten the pre-positioned adjacent structures into one piece to ensure the rigidity, load-bearing capacity and force transmission reliability of the connection point. Existing conventional accessories can be directly selected.

[0026] The beneficial effects of this invention are:

[0027] Compared with existing technologies, the modular integrated building construction method provided by this invention has the following main advantages:

[0028] 1. Complete prefabrication and unified interface: Factory modular prefabrication covers wall units, floor units and connection nodes. Functional units and connection nodes are pre-installed or have pre-set compatible interfaces, which completely solves the problem of on-site interface compatibility and greatly improves installation efficiency.

[0029] 2. Clear hierarchical splicing: It has a clear and defined hierarchical and planar splicing process. The core connection nodes serve as universal interfaces throughout the entire process, enabling seamless splicing of multi-material units and components such as steel, wood, and concrete, with strong compatibility.

[0030] 3. Form compatibility: The box-type wall modules and the lightweight wall panels (sheet-shaped) filled on site can share a set of connection methods on the same plane. They can be stacked vertically to transfer force and can also be hung laterally on the wall panels without adding extra on-site welding or wet work.

[0031] 4. Blind installation and fastening, quality controllable: Through standardized operation of pre-positioning and locking, wet work and welding steps are greatly reduced. The construction quality is less affected by environmental factors and worker skills. Moreover, the stiffness, load-bearing capacity, and seismic resistance of nodes can all be verified. There is no need to design separately for each material combination, and the structural safety is guaranteed.

[0032] 5. Flexible expansion, disassembly and modification: Later reconstruction only requires disassembling the connecting node components to separate the functional modules and connecting node modules, enabling reuse and off-site reconstruction. This not only further reduces costs but also increases the rate of building industrialization and makes it more environmentally friendly.

[0033] The following describes specific embodiments of the present invention with reference to the accompanying drawings: Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the corner piece and dovetail groove connection plate structure in the connection node of the modular integrated building general construction method provided in the embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram showing the connection relationship between corner pieces and dovetail groove connecting plates in the modular integrated building general construction method provided in this embodiment of the invention.

[0036] Figure 3 This is a schematic diagram of the dovetail groove connecting plate and component dovetail groove connector used in the general construction method for modular integrated buildings provided in this embodiment of the invention.

[0037] Figure 4 yes Figure 3 A schematic diagram showing the connection relationship between the dovetail groove connecting plate and the dovetail groove connector of the component.

[0038] Figure 5 This is a schematic diagram of the general connection node structure of the modular integrated building general construction method provided in the embodiment of the present invention.

[0039] Figure 6 This is one of the schematic diagrams of the dovetail joint connector and the beam-column structure of the modular integrated building general construction method provided in this embodiment of the invention when using wooden component beams and columns.

[0040] Figure 7 yes Figure 6 A schematic diagram showing the connection relationship between the dovetail connector of the component and the beam and column of the component.

[0041] Figure 8 This is the second schematic diagram of the dovetail connector of the component and the structural diagram of the component beam and column when using timber components in the general construction method for modular integrated buildings provided in this embodiment of the invention.

[0042] Figure 9 This is a schematic diagram of the component dovetail connector and component beam-column structure when the component beam and column are H-shaped steel in the general construction method for modular integrated buildings provided in this embodiment of the invention.

[0043] Figure 10 This is a schematic diagram of the component dovetail groove connector and component beam-column structure when the component beams and columns of the modular integrated building general construction method provided in this embodiment of the invention are steel square tubes.

[0044] Figure 11 This is a perspective view of the connection relationship between the component dovetail connector and the component beam and column when the component beam and column are steel square tubes in the general construction method for modular integrated buildings provided in this embodiment of the invention.

[0045] Figure 12 This is a schematic diagram of the component dovetail connector and component beam-column structure when the component beam and column are concrete beams and columns, as provided in the general construction method for modular integrated buildings according to embodiments of the present invention.

[0046] Figure 13 This is a diagram illustrating the structure of a dovetail connector adapted to various components in the modular integrated building general construction method provided by this invention.

[0047] Figure 14 This is a schematic diagram of the connection relationship between the L-shaped frame and a single wall panel in the modular integrated building general construction method provided in this embodiment of the invention.

[0048] Figure 15 This is a schematic diagram of an L-shaped frame structure for a modular integrated building construction method provided in this embodiment of the invention.

[0049] Figure 16 This is a perspective view of the L-shaped frame and single wall assembly of the modular integrated building general construction method provided in the embodiments of the present invention.

[0050] Figure 17 A schematic diagram of a general box-type wall module structure assembled using a modular integrated building general construction method provided in this embodiment of the invention.

[0051] Figure 18An assembly perspective view of a general box-type wall module assembled using a modular integrated building general construction method provided in this embodiment of the invention.

[0052] Figure 19 This is a perspective view example of the modular integrated building general construction method provided in this embodiment of the invention, which uses two general box-type wall modules for assembly.

[0053] Figure 20 This is a perspective view example of the modular integrated building general construction method provided in this embodiment of the invention, which uses a combination of two general box-type walls and sheet-like independent wall panels.

[0054] Figure 21 This is an example of an assembly perspective view of the modular integrated building general construction method provided in this embodiment of the invention, which uses three general box-type wall panels locked together.

[0055] Figure 22 This is one of the schematic diagrams of the modular integrated building general construction method provided in the embodiments of the present invention, which adopts a general box-type wall and sheet-like independent wall panel stacking method.

[0056] Figure 23 This is the second schematic diagram of the modular integrated building general construction method provided in the embodiments of the present invention, which adopts a general box-type wall and sheet-like independent wall panel stacking method.

[0057] Explanation of reference numerals in the attached figures:

[0058] 1 corner piece

[0059] 2. Dovetail groove connecting plate, 201 Dovetail groove, 202 First connecting hole, 203 Second connecting hole

[0060] 3. Components: dovetail connector, 301 standard surface, 301a dovetail protrusion, 301b third connecting hole.

[0061] 302 Component connectors, 302a Timber connectors, 302b H-beam connectors, 302c High-strength bolts or bent ribbed steel bars

[0062] 4. Component beams and columns, 401 connector interfaces

[0063] 5. Locking components; 6. Wall frame for single-panel wall; 7. Wall panel within the wall frame. Detailed Implementation

[0064] The specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosed technical solutions. It should also be noted that, for ease of description, the accompanying drawings show only the parts relevant to the technical solutions of this patent, not the entire structure.

[0065] Before discussing the exemplary embodiments in more detail, it should be mentioned that the structure of the device components and / or modules mentioned in the embodiments, unless otherwise described in detail, is something that can be understood by those skilled in the art based on existing public technologies or is a commercially available product.

[0066] refer to Figure 1-13 The modular integrated building general construction method provided in this embodiment includes the following steps:

[0067] I. Factory-prefabricated building modules: Prefabrication of components and splicing of complete modular units lay the foundation for splicing.

[0068] Based on the architectural design scheme, the materials, structure, dimensions, and assembly relationships of the modular functional units and connection nodes are defined, and standardized and integrated prefabrication is completed. The core prefabricated components include:

[0069] 1. Modular single-panel wall and single-panel floor: Both walls and floors are prefabricated components with independent functions (e.g., whether the walls have integrated pipelines and decorative base layers, and whether the floors (corridors) have integrated load-bearing structures, depending on the architectural design); the frames of the functional unit single-panel wall and single-panel floor have pre-set installation interfaces, which can be pre-installed as an integrated unit with the connection nodes; in addition, suitable grooves are reserved according to the design plan, and the groove size is precisely matched with the installation interface of the load-bearing surface of the component beams and columns, ensuring that no secondary processing is required for on-site construction.

[0070] 2. Connection Nodes: Precast corner pieces, dovetail joint plates, component dovetail connectors, and component beams and columns. Connection nodes are universal interfaces for functional unit splicing, meeting the requirements for multi-material compatibility.

[0071] 2.1 Corner fittings are used to provide a connection reference. The material of the corner fittings must be compatible with the connection requirements of steel, wood, and concrete modules. They can be made of steel, aluminum, or wood depending on the stress conditions: For single-story buildings and when the stress is relatively small, solid wood blocks can be used, such as solid logs with dimensions of 150*150*150-300*300*300mm, which are fixed to the dovetail joint plate with multi-directional nails; For multi-story buildings, humid environments, and when the stress is relatively large, steel / aluminum welded parts or cast iron / cast aluminum casting parts can be used, such as cast iron blocks with dimensions of 50*150*150-300*300*300mm, which are fixed to the dovetail joint plate with countersunk bolts.

[0072] 2.2 Dovetail groove connecting plate: Used to connect corner pieces and component dovetail groove connectors. The length and width dimensions are consistent with the corresponding corner piece. One corner piece can be configured with 1-6 dovetail groove connecting plates, configured according to the preset number of connections, and pre-connected and fixed in the factory according to the design drawings.

[0073] The dovetail groove connecting plate is provided with a dovetail groove, a first connecting hole for connecting the fixed corner piece to the dovetail groove connecting plate, and a second connecting hole for connecting the fixed component dovetail groove connector to the dovetail groove connecting plate; the first connecting hole for connecting the corner piece is located inside the groove of the dovetail groove and is a countersunk through hole, generally 3-5 (M8-12); the second connecting hole for connecting the component dovetail groove connector is located outside the groove and is a stepped mating hole, such as an 80% size hole, generally 3-5 (M12).

[0074] When the corner brackets are made of steel or aluminum, reinforcement can be further welded along the gaps between the plates after bolting. When the corner brackets are made of wood, they can be directly connected by nails. Preferably, each nail faces a different direction. That is: when the corner brackets are made of steel or aluminum, the first connecting hole is a countersunk through hole, and the connector is a countersunk bolt; when the corner brackets are made of wood, the first connecting hole can be a regular through hole, and the connector is a nail.

[0075] Based on the dimensions of the corner fittings, the dovetail joint plate is designed to be standardized, such as a length and width range of 150*150*40-300*300*40mm and a thickness of 40mm; the height of the dovetail joint is 80% of the length of the dovetail joint plate, the maximum width of the dovetail joint opening is 50% of the length of the dovetail joint plate, the tenon width of the dovetail joint is the opening width minus 20mm, and the depth is 20mm.

[0076] 2.3 Dovetail Connector for Components: Features a standard surface and component connectors. The material and structure of the component connectors are adapted to the material and structure of the beams and columns.

[0077] The standard surface is provided with a dovetail protrusion that matches the dovetail groove of the dovetail groove connecting plate and a third connecting hole that matches the second connecting hole of the dovetail groove connecting plate. Pre-positioning is achieved by the dovetail protrusion engaging with the dovetail groove of the dovetail groove connecting plate. The third connecting hole is used for fastening with the dovetail groove connecting plate. Preferably, the size range of the standard surface is consistent with that of the dovetail groove connecting plate used in the process, and the thickness is generally set to 40mm, such as 50*150*40-300*300*40mm. The third connecting hole is located at the connection between the dovetail protrusion and the standard surface. The part of the dovetail protrusion is a through hole, and generally 3-5 holes (M12) are provided. The part of the standard surface is divided into stepped mating holes, such as 20% size holes.

[0078] Standardized prefabrication can be carried out according to the design scheme. For example, the height of the dovetail protrusion is 80% of the length of the corresponding dovetail groove connecting plate, the maximum width is 50% of the length of the corresponding dovetail groove connecting plate, the minimum width is the maximum width minus 20mm, and the depth is 20mm.

[0079] The component connectors are pre-designed connection structures adapted to beams and columns made of any one or more materials, including steel, wood, and concrete. The beams and columns can be made of engineered wood, H-beams, steel square tubing, or concrete. The component connectors correspond to timber connectors, H-beam connectors, high-strength bolts, or bent ribbed steel bars, respectively. The timber connectors and H-beam connectors have connection holes.

[0080] The dovetail connector can be adapted to wood, steel or concrete components, and can also be expanded and customized according to the actual material connection requirements.

[0081] 2.4 Component beams and columns: Component beams and columns are connected to component dovetail connectors on one hand to realize the transmission of force, and on the other hand, they are connected to independent wall / passage units through corner fittings, dovetail connector plates and component dovetail connectors.

[0082] The load-bearing surfaces of the beams and columns have pre-set installation interfaces that are compatible with the frame and material of the pre-connected functional units. The ends of these interfaces are equipped with connector interfaces that mate with the component connectors of the dovetail joint connectors.

[0083] If the pre-designed beams and columns are made of engineered wood, the beams and columns facing the wall have wall fixing grooves; the connector interfaces at the ends are grooves, which are fitted and inserted into the wooden connecting plates of the dovetail connectors of the components, and then connected and fixed with accessories such as bolts. The engineered wood includes glued laminated timber, CLT or LVL beams, logs, etc. When high-strength connections are required, the beams and columns have wall fixing grooves on the wall facing the wall, which are 1-2 tongue and groove joints.

[0084] If the pre-designed structural beam / column is an H-beam, the end connector interface is the web end of the H-beam. The corresponding structural connector consists of two welded connecting plates. The web end of the H-beam is inserted into the two connecting plates of the dovetail groove connector. Subsequent on-site fastening is achieved using 6-8 high-strength bolts. Preferably, the weld at the connection point is fully welded after the connection is fixed.

[0085] If the pre-designed component beam / column is a steel square tube, the end connector interface is an end plate with multiple bolt holes, and the component connecting parts of the component dovetail connector are multiple connecting bolts. After the bolt connection is tightened, the standard panel weld between the end plate of the steel square tube and the component dovetail connector can be fully welded during on-site construction.

[0086] If the pre-designed component beams and columns are concrete beams and columns, the connectors of the component dovetail groove connectors are welded bent ribbed steel bars, which are pre-embedded and fixed during concrete pouring.

[0087] II. Assembling box-type wall unit modules and / or passageway unit modules at the factory or construction site:

[0088] Pre-positioning is achieved by inserting the dovetail protrusion of the dovetail connector of the component into the dovetail groove of the dovetail connecting plate. One corner piece, two or more dovetail connecting plates, two dovetail connectors connected to the above components, and two component beams / columns form an L-shaped frame. This L-shaped frame serves as an independent connection node, used for interconnection between L-shaped frame connection nodes or for connection to single wall panels and single floor panels of modular functional units. The L-shaped frame connection nodes, when combined with single wall panels, are fixed using locking devices to form a wall unit module. The wall units are cross-interlocked to form a three-dimensional box-type wall unit module. Similarly, the L-shaped frame connection nodes, when combined with single floor panels, are fixed using locking devices to form a passageway unit module. For example, four interlocked wall units can be connected to form a cubic frame wall module with only side walls, and six interlocked wall units can be connected to form a six-sided prefabricated cubic wall module. The length and width of the wall unit are determined by the dimensions of the corresponding beams, columns, and individual wall panels designed and manufactured. Similarly, the length, width, and height of the box-type wall module can be determined according to the design, by adjusting the dimensions of the wall panels and component beams and columns.

[0089] The length and width of the wall unit are determined by the dimensions of the corresponding beams, columns, and individual wall panels designed and manufactured. Similarly, the length, width, and height of the box-type wall module can be determined according to the design, by adjusting the dimensions of the wall panels and component beams and columns.

[0090] The locking component is a fastener adapted to connect and fix various adjacent materials. This fastener is selected based on the material, configuration, stress level, and installation scenario of the connecting unit / module. It is used to secure the pre-positioned adjacent structures together to ensure the rigidity, load-bearing capacity, and force transmission reliability of the connection point. Existing conventional accessories can be directly selected. For example, wood-to-wood locking uses a combination of L-shaped angle brackets, steel nail teeth plates, and multi-directional nails; steel-to-steel / aluminum locking uses stainless steel angle brackets or high-strength bolts; lightweight wall panel-keel locking uses keel crack-resistant angle brackets or bolts; and between concrete and steel, bolts or other anchors are directly embedded to secure the concrete structure and joints.

[0091] III. On-site Foundation Positioning: Level and lay out the building foundation on the construction site to determine the installation baseline, assembly position, and elevation of the box-type wall unit modules and / or passageway unit modules.

[0092] Leveling of the building foundation is completed on-site. Total stations and levels are used for layout and positioning, clearly defining key benchmarks: 1. If a floor slab is to be laid or poured, the installation benchmark line and elevation of the slab must be determined; 2. The assembly position of connection nodes (especially concrete-compatible connectors connected to the foundation); 3. The verticality benchmark line of the wall units. For concrete foundations, the pre-embedded reinforcing bars compatible with the dovetail connectors of the components must be positioned in advance to ensure a reliable connection between the bottom floor slab and the foundation.

[0093] IV. Installation and Pre-positioning of the Ground Floor Wall Unit Modules and / or Corridor Unit Modules: The prefabricated wall unit modules are installed to the pre-set positions on the building foundation. The pre-positioning of the ground floor walls is completed by interlocking the connecting nodes on the wall unit modules. The prefabricated corridor unit modules are installed to the pre-set positions on the building foundation. The pre-positioning of the ground floor corridors is completed by interlocking the connecting nodes on the corridor unit modules and the connecting nodes on the wall unit modules.

[0094] 5. Node locking and fixing: Fix the nodes with preset connection holes by using preset accessories to connect them, and then tighten the adjacent wall unit modules and the corridor unit modules in sequence; the dovetail protrusion of the component dovetail connector is inserted into the dovetail groove of the dovetail groove connecting plate, and 3-5 connector bolts (such as M12) are used to connect them and tighten them to prevent slippage.

[0095] VI. Upper Wall and Multi-Building Space Expansion: Based on the architectural design plan, repeat steps four and five to hoist the upper wall unit modules and passageway unit modules. Through the connection nodes, the upper and lower layers are stacked and the planar expansion is realized, completing the splicing and fastening of all building spaces.

[0096] At the construction site, the prefabricated universal connection nodes in the factory enable seamless interlocking connections between steel, wood, and concrete box-type wall modules, as well as compatible connections between box-type wall modules and sheet wall panels. This allows for the addition of walls on-site, and even the reconstruction of walls in other locations after renovation or demolition, greatly improving efficiency and saving costs.

[0097] The above are illustrative examples of preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A general construction method for modular integrated buildings, comprising the following steps: 1) Factory-prefabricated building modules: Based on the architectural design scheme, modular functional units and connection nodes are prefabricated; the functional units include single wall panels and single floor panels; the connection nodes include corner fittings, dovetail connecting plates, component dovetail connectors, and component beams and columns. The corner fittings provide a connection reference, and the dovetail connecting plates connect the corner fittings and the component dovetail connectors; the component dovetail connectors have a standard surface and component connectors, and the material and structure of the component connectors are adapted to the material and structure of the component beams and columns; the load-bearing surfaces of the component beams and columns have pre-set installation interfaces, which are adapted to the frame and material of the pre-connected functional units, and the ends of the component beams and columns have connector interfaces that mate with the component connectors; the corner fittings and dovetail connecting plates are fixedly connected in the factory according to a preset quantity; 2) Assemble box-type wall unit modules and / or passageway unit modules in the factory or construction site: Pre-positioning is achieved by inserting the dovetail protrusion of the component dovetail connector into the dovetail groove of the dovetail connecting plate; one corner piece, two or more dovetail connecting plates, two dovetail connectors of the above components, and two component beams and columns are connected to form an L-shaped frame. This L-shaped frame serves as an independent connection node for mutual connection between L-shaped frame connection nodes or for connection with single wall panels and single floor panels of modular functional units; after the L-shaped frame connection nodes and single wall panels are combined, they are fixed by locking components to form a wall unit module. The wall units are cross-interlocked to form a three-dimensional box-type wall unit module; after the L-shaped frame connection nodes and single floor panels are combined, they are fixed by locking components to form a passageway unit module. 3) On-site foundation positioning: Level and lay out the building foundation on the construction site to determine the installation baseline, assembly position and elevation of the box-type wall unit modules and / or passage unit modules; 4) Installation and pre-positioning of the bottom wall unit modules and / or corridor unit modules: The prefabricated wall unit modules are installed to the pre-set positions on the building foundation, and the pre-positioning of the bottom wall is completed by interlocking the connecting nodes on the wall unit modules; the prefabricated corridor unit modules are installed to the pre-set positions on the building foundation, and the pre-positioning of the bottom corridor is completed by interlocking the connecting nodes on the corridor unit modules and the connecting nodes on the wall unit modules. 5) Node locking and fixing: Fix the nodes with preset connection holes by using preset accessories to connect them, and then complete the fastening between adjacent wall unit modules and between the nodes and the corridor unit modules in sequence; 6) Upper wall and multi-building space expansion: Based on the architectural design scheme, repeat steps 4) and 5), hoist the upper wall unit modules and passage unit modules, and realize the stacking and planar expansion of the upper and lower layers through the connection nodes to complete the splicing and fastening of all building spaces.

2. The general construction method for modular integrated buildings as described in claim 1, characterized in that: The corner fittings are made of materials according to different stress conditions in the building design. In humid environments and under high stress, the corner fittings are made of steel or aluminum welded together or cast iron or cast aluminum cast into cubic blocks, which are connected and fixed with countersunk bolts and dovetail groove connecting plates. When the corner fittings are made of wood, they are fixed and connected with dovetail groove connecting plates using multi-directional nails.

3. The general construction method for modular integrated buildings as described in claim 1, characterized in that: The dovetail groove connecting plate (2) is provided with a dovetail groove (201), a first connecting hole (202) for connecting the fixed corner piece (1) and the dovetail groove connecting plate (2), and a second connecting hole (203) for connecting the fixed component dovetail groove connector (3) and the dovetail groove connecting plate (2); the first connecting hole (202) for connecting the corner piece (1) is located in the groove of the dovetail groove (201) and is a countersunk through hole; the second connecting hole (203) for connecting the component dovetail groove connector (3) is located outside the groove and is a stepped mating hole.

4. The general construction method for modular integrated buildings as described in claim 1, characterized in that: The standard surface (301) of the component dovetail connector (3) is provided with a dovetail protrusion (301a) that is adapted to the dovetail groove (201) of the dovetail connecting plate (2) and a third connecting hole (301b) that is adapted to the second connecting hole (203) of the dovetail connecting plate (2). The dovetail protrusion (301a) and the dovetail groove (201) cooperate to achieve pre-positioning, and the third connecting hole (301b) is used to fasten to the dovetail connecting plate (2). The component connector (302) is a pre-set connection structure for component beams and columns adapted to any one or more materials such as steel, wood and concrete.

5. The general construction method for modular integrated buildings as described in claim 4, characterized in that: The size range of the standard surface (301) is consistent with that of the dovetail groove connecting plate (2) used in conjunction; the third connecting hole (301b) is located at the connection between the dovetail protrusion (301a) and the standard surface (301), and the part located in the dovetail protrusion (301a) is a through hole, and the part located in the standard surface (301) is a stepped mating hole.

6. The general construction method for modular integrated buildings as described in claim 4, characterized in that: The component beams and columns (4) are made of engineered wood, H-beams, steel square tubes or concrete beams and columns. The component connectors (302) are respectively a timber connector (302a), an H-beam connector (302b), a strong bolt or a bent ribbed steel bar (302c). The timber connector (302a) and the H-beam connector (302b) are provided with connection holes.

7. The general construction method for modular integrated buildings as described in claim 6, characterized in that: The pre-designed component beams and columns (4) are made of engineered wood, and the component beams and columns (4) are provided with wall fixing grooves on the wall surface; the connector interface (401) at the end is a groove, which is fitted and plugged into the wooden connecting plate (302a) of the component dovetail connector (3) for fixed connection.

8. The general construction method for modular integrated buildings as described in claim 6, characterized in that: The pre-designed component beam (4) is an H-beam, and the end connector interface (401) is the end of the web of the H-beam. The corresponding component connector (302) is two welded connecting plates. The end of the web of the H-beam is inserted into the two connecting plates of the component dovetail connector (3) and fixed by bolts.

9. The general construction method for modular integrated buildings as described in claim 6, characterized in that: The pre-set component beams and columns (4) are steel square tubes, the end connector interface (401) is an end plate, and multiple bolt holes are provided on the end plate. The component connector (302) is a number of connecting bolts.

10. The general construction method for modular integrated buildings as described in claim 6, characterized in that: The pre-set component beams and columns (4) are concrete beams and columns, and the connector (302) of the component dovetail connector (3) is a bent ribbed steel bar, which is pre-embedded and fixed during concrete pouring.

11. The general construction method for modular integrated buildings as described in claim 1, characterized in that: The locking component is a fastener adapted to connect and fix various adjacent units / modules. The fastener is selected according to the material, configuration, stress level and installation scenario of the connected unit / module, and is used to fasten the pre-positioned adjacent structures into one piece.

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