A demountable and reusable modular building and method of construction thereof

Abstract

A kind of detachable and reusable modular building and its construction method, the building includes a series of core square steel tube columns (CFST), which are filled with concrete inside, as the core support of the building, providing the main vertical bearing capacity. Hexagonal module columns are matched with core square steel tube columns, which are pre-fabricated in the factory and connected with beams by welding to form single module units for supporting building loads. In addition, a series of shear connectors are installed in the core of the core square steel tube columns to connect the upper and lower core square steel tube columns and enhance the shear resistance of the structure. Pre-designed holes are provided on the hexagonal module columns, core square steel tube columns and shear connectors, which are fastened by through bolts and nuts to realize the fixation and connection between components. This design not only improves the construction efficiency, but also realizes the detachability of the components, facilitating the demolition and material recycling of the building after the end of its life cycle, in line with the concept of circular economy.

Description

Technical Field

[0001] This invention relates to modular integrated buildings, and more particularly to a detachable and reusable modular building and its construction method. Background Technology

[0002] Modular Integrated Construction (MiC), as an industrialized construction technology, has developed rapidly in the construction industry in recent years. Its core concept is to prefabricate standardized modular units in a factory, transport them to the site, and then quickly assemble them to form a complete building system. With its advantages of high efficiency, environmental friendliness, and controllability, MiC technology has become an important direction for promoting the transformation and upgrading of the construction industry.

[0003] However, existing MiC systems still have significant shortcomings in the design of modular connection structures, which limit their mechanical properties, construction efficiency, and sustainable development potential. For example... Figure 1 As shown, many existing MiC connection nodes use bolted, welded, or interlocked connections, whose mechanical performance differs significantly from traditional cast-in-place structures, limiting their application in high-rise and high-intensity seismic zones. Secondly, most connection structures have too many components; a single node often requires 5-10 types of accessories (such as corner brackets, gaskets, shear keys, etc.), leading to cumbersome on-site installation procedures and reduced error tolerance. Multi-component assembly places stringent requirements on module machining accuracy (within ±2mm); even minor deviations necessitate manual adjustment. Furthermore, such complex connection processes require highly skilled workers for on-site operation, severely impacting construction efficiency and contradicting the original intention of MiC to reduce on-site work. In addition, current mainstream connection technologies (such as welding and grouting) mostly employ permanent fixing methods, making it difficult to separate modules without damage at the end of their life cycle. This hinders material recycling and reuse, violating the principles of a circular economy.

[0004] It should be noted that the information disclosed in the background section above is only for understanding the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The main objective of this invention is to overcome the deficiencies in the aforementioned background technology and provide a modular building that is detachable and reusable.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A modular building that is detachable and reusable includes:

[0008] A series of core square steel tube columns (CFSTs), with concrete filling the core square steel tube columns, serve as the core support of the building and provide the main vertical load-bearing capacity;

[0009] A series of hexagonal modular columns, which, together with the core square steel tube column, form a robust column structure to support the building load;

[0010] A series of shear-resistant connectors are installed in the core of the core square steel tube column to connect the upper and lower core square steel tube columns, thereby enhancing the shear resistance of the structure.

[0011] The hexagonal module column, the core square steel pipe column, and the shear-resistant connector are provided with corresponding preset holes and fastened with through bolts and nuts to achieve fixation and connection between components.

[0012] Furthermore, it also includes a series of connecting plates, which are installed on the hexagonal module column. The connecting plates, the hexagonal module column, the core square steel pipe column, and the shear-resistant connector are connected by through bolts and nuts to enhance the connection strength between modules.

[0013] Furthermore, without using connecting plates, the hexagonal module column, the core square steel pipe column, and the shear-resistant connector are connected together using through bolts and nuts.

[0014] Furthermore, four of the symmetrically distributed faces of the hexagonal module column are connected to the core square steel tube column inside the hexagonal module column by bolts and nuts.

[0015] Furthermore, the connecting plate is installed on the outside of the hexagonal module column to connect the upper and lower hexagonal module columns.

[0016] Furthermore, the shear-resistant connector is installed in the core of the core square steel column and connected to the core square steel columns of the upper and lower layers by through bolts to enhance the shear resistance of the structure.

[0017] Furthermore, the hexagonal modular columns and beams are prefabricated and welded together in the factory to form individual MiC modular units, facilitating transportation and rapid on-site assembly.

[0018] Furthermore, the connecting plate has pre-set mounting holes for engaging with the through bolts to achieve rapid positioning and installation.

[0019] Furthermore, the shear-resistant connector has a shape that matches the inner cavity of the core square steel pipe column to ensure the stability and reliability of the installation.

[0020] Furthermore, the long side of the hexagonal module column is fitted to the surface of the core square steel tube column to ensure the tightness and stability of the connection.

[0021] Furthermore, the building includes internal nodes, external nodes, and corner nodes, which are used to connect the modular units inside, outside, and corner of the building, respectively, to ensure the integrity and stability of the building.

[0022] Furthermore, the sides of the hexagonal modular column have sufficient width to facilitate integration with robotics and AI automatic control technologies.

[0023] A method for constructing the aforementioned detachable and reusable modular building includes the following steps:

[0024] Prefabricated hexagonal modular columns form modular units;

[0025] Position and install the core square steel pipe column at the construction site;

[0026] The long side surface of the hexagonal module column is attached to the surface of the core square steel tube column;

[0027] Position and install the shear-resistant connector at the core of the core square steel pipe column;

[0028] The hexagonal module column, core square steel pipe column and shear-resistant connector are connected and fixed by through bolts and nuts to realize the connection between the internal components of the module and adjacent modules.

[0029] Install the upper core square steel pipe columns and module units according to the above steps;

[0030] Concrete is filled into the core square steel tube column to form a concrete-filled square steel tube column (CFST) to enhance the overall mechanical properties of the structure.

[0031] A method for constructing the aforementioned detachable and reusable modular building includes the following steps:

[0032] Prefabricate hexagonal modular columns and pre-weld connecting plates to the outside of the hexagonal modular columns to form modular units;

[0033] Position and install the core square steel pipe column at the construction site;

[0034] The long side surface of the hexagonal module column is attached to the surface of the core square steel tube column;

[0035] Position and install the shear-resistant connector at the core of the core square steel pipe column;

[0036] The connecting plate, the hexagonal module column, the core square steel pipe column, and the shear-resistant connector are connected and fixed by through bolts and nuts, thereby realizing the connection between the internal components of the module and adjacent modules;

[0037] Install the upper core square steel pipe columns and module units according to the above steps;

[0038] Concrete is filled into the core square steel tube column to form a concrete-filled square steel tube column (CFST) to enhance the overall mechanical properties of the structure.

[0039] A method for constructing the aforementioned detachable and reusable modular building includes the following steps:

[0040] Prefabricated hexagonal modular columns form modular units;

[0041] Position and install the core square steel pipe column at the construction site;

[0042] The long side surface of the hexagonal module column is attached to the surface of the core square steel tube column;

[0043] Position and install the shear-resistant connector at the core of the core square steel pipe column;

[0044] Without using connecting plates, the hexagonal module column, core square steel pipe column and shear-resistant connector are connected and fixed by through bolts and nuts to realize the connection between the internal components of the module and adjacent modules.

[0045] Install the upper core square steel pipe columns and module units according to the above steps;

[0046] Concrete is filled into the core square steel tube column to form a concrete-filled square steel tube column (CFST) to enhance the overall mechanical properties of the structure.

[0047] The present invention has the following beneficial effects:

[0048] This invention proposes an innovative detachable and reusable modular building structure and its construction method, which has significant technical advantages compared to traditional Modular Integrated Building (MiC) technology. First, the structure is based on a combination of core CFST columns and hexagonal modular columns. This unique design not only enhances the strength of the columns but also significantly improves the overall mechanical performance of the building, enabling its application in higher-rise buildings and structures bearing higher loads, greatly expanding the application scope of modular buildings. Second, the use of through bolts and shear connectors simplifies the on-site installation process, improves construction efficiency, and achieves component detachability, facilitating dismantling and material recycling at the end of the building's life cycle, aligning with the development concept of a circular economy. The detachable and reusable modular building components of this invention have simple construction, low cost, and are easy to mass-produce in factories, possessing enormous potential for large-scale practical application and promotion, providing strong technical support for the transformation and upgrading of the construction industry.

[0049] Compared with the prior art, the embodiments of the present invention have the following significant technical advantages:

[0050] 1. The MiC structure based on the present invention consists of a core CFST column and hexagonal modular columns. The hexagonal modular columns are connected to the core square steel tube column through four of their symmetrically distributed faces. Compared with the existing design, the column under this design is more robust and can provide better mechanical performance, and has the potential to be applied to taller buildings and buildings that can withstand higher loads.

[0051] 2. The modular connection design based on through bolts and shear connectors facilitates on-site installation and positioning of the connection nodes, making construction and installation simpler, faster, and more efficient, saving manpower and material resources. It also allows for integration with robots, AI algorithms, and other technologies to achieve intelligent construction of the structure. Furthermore, except for the core CFST and through bolts, all other components are detachable, making future dismantling and recycling of the structure more convenient.

[0052] 3. The components are simple in structure and inexpensive, enabling mass production in factories, and have great potential for large-scale practical application in the future.

[0053] Other beneficial effects of the embodiments of the present invention will be further described below. Attached Figure Description

[0054] Figure 1 The traditional MiC connection is (a) interlocking connection and (b) bolted connection.

[0055] Figure 2A This is a diagram illustrating the design effect of the MiC connection in an embodiment of the present invention.

[0056] Figure 2B This is a diagram of the MiC connection structure designed according to an embodiment of the present invention.

[0057] Figure 3 These are three types of nodes in the modular building of this invention.

[0058] Figure 4 The following is a front view of an internal node in an embodiment of the present invention: (a) with an external connecting plate and (b) without an external connecting plate.

[0059] Figure 5 The internal node side view of this embodiment of the invention is shown in (a) with an external connecting plate and (b) without an external connecting plate.

[0060] Figure 6 The top view of the internal node in this embodiment of the invention is shown in (a) with an external connecting plate and (b) without an external connecting plate.

[0061] Figure 7 The external node front view of the embodiment of the present invention is shown in (a) with an external connecting plate and (b) without an external connecting plate.

[0062] Figure 8The external node side view of this embodiment of the invention is shown in (a) with an external connecting plate and (b) without an external connecting plate.

[0063] Figure 9 The top view of the external node in this embodiment of the invention is shown in (a) with an external connecting plate and (b) without an external connecting plate.

[0064] Figure 10 The front view of the corner node in an embodiment of the present invention is shown in (a) with an external connecting plate and (b) without an external connecting plate.

[0065] Figure 11 The side view of the corner node in this embodiment of the invention (a) shows a node with an external connecting plate and (b) shows a node without an external connecting plate.

[0066] Figure 12 The top view of the corner node in this embodiment of the invention is shown in (a) with an external connecting plate and (b) without an external connecting plate.

[0067] Figure 13 The installation process of the node in this embodiment of the invention is as follows: (a) with an external connection board and (b) without an external connection board. Detailed Implementation

[0068] The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present invention.

[0069] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be used for fixing, coupling, or communication.

[0070] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0072] See Figures 2A to 13 This invention provides a detachable and reusable modular building, comprising: a series of core square steel tube columns 1 (CFST) 1, with concrete filling the core square steel tube columns 1, serving as the core support of the building and providing the main vertical load-bearing capacity; a series of hexagonal modular columns 2, which cooperate with the core square steel tube columns 1 to form a robust column structure for supporting the building load; and a series of shear connectors 3, which are installed in the core of the core square steel tube columns 1 to connect the upper and lower core square steel tube columns 1, thereby enhancing the shear resistance of the structure; wherein, the hexagonal modular columns 2, the core square steel tube columns 1, and the shear connectors 3 are provided with corresponding pre-set holes and fastened by through bolts 4 and nuts to achieve fixation and connection between components. The structural design of this building improves the mechanical performance, construction efficiency, and sustainability of modular integrated buildings. It not only improves construction efficiency but also achieves the detachability of components, facilitating dismantling and material recycling at the end of the building's life cycle, in line with the concept of a circular economy.

[0073] In some embodiments, the detachable and reusable modular building further includes a series of connecting plates 5, which are installed on the hexagonal module column 2. The connecting plates, the hexagonal module column 2, the core square steel pipe column 1, and the shear-resistant connector 3 are connected by through bolts 4 and nuts to enhance the connection strength between modules.

[0074] In other embodiments, instead of using connecting plates, the hexagonal module column 2, the core square steel pipe column 1, and the shear-resistant connector 3 are connected together by through bolts 4 and nuts.

[0075] In some embodiments, four of the symmetrically distributed faces of the hexagonal module column 2 are connected to the core square steel tube column 1 within the hexagonal module column 2 by bolts and nuts.

[0076] In some embodiments, the hexagonal module column 2 and the core square steel pipe column 1 are connected by the connecting plate and the through bolt 4 to form a stable column structure. The connecting plate is installed on the outside of the hexagonal module column 2 and is used to connect the upper and lower hexagonal module columns 2.

[0077] In some embodiments, the shear-resistant connector 3 is installed in the core of the core square steel column 1 and connected to the core square steel columns 1 of the upper and lower layers by through bolts 4 to enhance the shear resistance of the structure.

[0078] In some embodiments, the hexagonal modular column 2 is prefabricated and welded to the beam in the factory to form a single MiC modular unit, which facilitates transportation and rapid on-site assembly.

[0079] In some embodiments, the connecting plate has a preset mounting hole for engaging with the through bolt 4 to achieve rapid positioning and installation.

[0080] In some embodiments, the shear connector 3 has a shape that matches the inner cavity of the core square steel column 1 to ensure the stability and reliability of the installation.

[0081] In some embodiments, the long side of the hexagonal module column 2 is fitted to the surface of the core square steel tube column 1 to ensure the tightness and stability of the connection.

[0082] In some embodiments, the building includes internal nodes, external nodes, and corner nodes, which are used to connect the modular units inside, outside, and corner of the building, respectively, to ensure the integrity and stability of the building.

[0083] In some embodiments, the sides of the hexagonal module column 2 have sufficient width to facilitate integration with robotics and AI automatic control technologies.

[0084] This invention also provides a method for constructing the aforementioned detachable and reusable modular building, comprising the following steps:

[0085] Prefabricate hexagonal modular columns 2 to form modular units;

[0086] Position and install the core square steel pipe column 1 at the construction site;

[0087] The long side surface of the hexagonal module column 2 is attached to the surface of the core square steel pipe column 1; the shear-resistant connector 3 is positioned and installed in the core of the core square steel pipe column 1;

[0088] The hexagonal module column 2, the core square steel pipe column 1 and the shear connector 3 are connected and fixed by through bolts 4 and nuts, so as to realize the connection between the internal components of the module and the adjacent modules.

[0089] Install the upper core square steel pipe column 1 and module unit according to the above steps;

[0090] Concrete is filled into the core square steel tube column 1 to form a concrete-filled square steel tube column 1 (CFST) to enhance the overall mechanical properties of the structure.

[0091] This invention also provides a method for constructing the aforementioned detachable and reusable modular building (using connecting plates), comprising the following steps:

[0092] Prefabricate hexagonal modular columns 2 and pre-weld connecting plates to the outside of the hexagonal modular columns 2 to form modular units;

[0093] Position and install the core square steel pipe column 1 at the construction site;

[0094] The long side surface of the hexagonal module column 2 is attached to the surface of the core square steel tube column 1;

[0095] Position and install the shear-resistant connector 3 at the core of the core square steel pipe column 1;

[0096] The connecting plate, the hexagonal module column 2, the core square steel pipe column 1 and the shear-resistant connector 3 are connected and fixed by through bolts 4 and nuts, so as to realize the connection between the internal components of the module and the adjacent modules.

[0097] Install the upper core square steel pipe column 1 and module unit according to the above steps;

[0098] Concrete is filled into the core square steel tube column 1 to form a concrete-filled square steel tube column 1 (CFST) to enhance the overall mechanical properties of the structure.

[0099] This invention also provides a method for constructing the aforementioned detachable and reusable modular building (without using connecting plates), comprising the following steps:

[0100] Prefabricate hexagonal modular columns 2 to form modular units;

[0101] Position and install the core square steel pipe column 1 at the construction site;

[0102] The long side surface of the hexagonal module column 2 is attached to the surface of the core square steel tube column 1;

[0103] Position and install the shear-resistant connector 3 at the core of the core square steel pipe column 1;

[0104] Without using a connecting plate, the hexagonal module column 2, the core square steel pipe column 1 and the shear connector 3 are connected and fixed by through bolts 4 and nuts to realize the connection between the internal components of the module and adjacent modules.

[0105] Install the upper core square steel pipe column 1 and module unit according to the above steps;

[0106] Concrete is filled into the core square steel tube column 1 to form a concrete-filled square steel tube column 1 (CFST) to enhance the overall mechanical properties of the structure.

[0107] In a typical embodiment, the columns of the MiC structure based on this invention are composed of a core square steel tube column 1 (CFST) and hexagonal modular columns 2. The hexagonal modular columns 2 are connected to the core square steel tube column 1 through four symmetrically distributed faces. Compared with existing designs, the columns in this design are more robust, provide better mechanical performance, and have the potential to be applied to taller buildings and buildings that withstand higher loads. Furthermore, this design uses through bolts 4 for inter-module connection, which not only simplifies and speeds up construction and installation, but also allows all components except the core CFST and through bolts to be detachable, facilitating future dismantling and recycling. In addition, the use of hexagonal modular columns 2 with sufficiently wide sides enables the integration of new technologies such as robotics and AI automatic control, promoting the development of intelligent construction and engineering.

[0108] The following describes specific embodiments of the present invention.

[0109] This invention proposes a modular integrated structure with detachable node connection, as shown in the schematic diagram below. Figure 2A and Figure 2B As shown, this node connects the concrete-filled square steel tube column 1 to the directly connected hexagonal modular column 2 via through bolts 4, connecting plates, and shear connectors 3. The hexagonal modular column 2 is connected to the square steel tube column 1 through four symmetrically distributed faces. The hexagonal column and beam are pre-welded together in the factory to form individual MiC modules. During on-site installation, the long side of the hexagonal modular column 2 faces the concrete-filled square steel tube column 1. For inter-layer connections, the hexagonal columns of the upper and lower layers are connected based on the connecting plates, and the CFST columns of the upper and lower layers are connected based on the shear connectors 3. Through bolts 4 are used to fix all components, realizing the connection of MiC modules within the same layer and between layers. The novel MiC connection structure proposed in this invention is more robust and has better mechanical performance than traditional MiC connection designs, and has the potential to be applied to taller buildings and buildings that withstand higher loads. Furthermore, the connection of the components in this invention is based on through bolts 4, which not only facilitates on-site construction and installation and effectively improves construction efficiency, but also makes the various components in the connection detachable, which facilitates the demolition and recycling of the building after its life cycle, in line with the concept of developing a circular economy in the construction industry.

[0110] This invention innovatively designs a hexagonal MiC column and proposes a novel connection structure for connecting MiC units based on this column. In actual construction applications, the hexagonal column-based MiC units are prefabricated in the factory and transported to the site. Square steel tube columns are pre-installed and positioned on-site. Then, the long side surfaces of the hexagonal module units are aligned with the surfaces of the square steel tube columns. Shear-resistant connectors are positioned and installed into the core of the square steel tube columns, and connecting plates are positioned and installed onto the exterior of each hexagonal column. Through bolts are then used to connect the connecting plates, hexagonal module columns, square steel tube columns, and shear-resistant connectors in the core of the current layer. Finally, the upper-layer square steel tube columns and modules are installed following the same process, and through bolts are used to connect them to the connectors. Finally, concrete is filled into the square steel tube columns to form CFST columns, enhancing the overall mechanical properties of the structure.

[0111] The MiC structure based on this invention consists of a core CFST column and hexagonal modular columns. The hexagonal modular columns are connected to the core square steel tube column via four symmetrically distributed faces. Compared to existing designs, this design results in more robust columns with better mechanical performance, possessing the potential for application in taller buildings and structures with higher loads. Furthermore, the use of through bolts for inter-module connections simplifies and speeds up construction and installation; all components except the core CFST and through bolts are detachable, facilitating future dismantling and recycling. In addition, the use of hexagonal modular columns with wider sides allows for the integration of new technologies such as robotics and AI-powered automated control, advancing intelligent construction and engineering.

[0112] The innovative MiC node designed in this invention differs significantly from existing nodes, specifically in that it innovatively designs a hexagonal MiC column and proposes a novel connection structure for connecting MiC units based on this column. In actual construction, the hexagonal column-based MiC units are prefabricated in the factory and transported to the site. Connecting plates are pre-positioned and pre-welded to the exterior of the hexagonal column. Square steel tubular columns are pre-installed and positioned on-site. Then, the long side surface of the hexagonal column of the module unit is fitted to the surface of the square steel tubular column, and the shear connector is positioned and installed in the core of the square steel tubular column. Through bolts are used to connect the connecting plate, hexagonal module column, square steel tubular column, and the shear connector in the core of the current layer. Finally, the upper-layer square steel tubular column and module are installed following the same process, and through bolts are used to connect them to the connectors. Finally, concrete is filled into the square steel tubular column to form a CFST column, enhancing the overall mechanical performance of the node.

[0113] The embodiments of the present invention respectively represent the internal nodes, external nodes, and corner nodes in the MiC structure (specific locations are shown in the figure). Figure 3The node structure is designed as shown. However, the necessity of the hexagonal column connection plate design requires further consideration: the presence of this connection plate forces the interlayer slab to have openings to meet installation requirements, potentially causing non-structural problems such as leakage; conversely, without the connection plate, the modules will only be directly connected to the core column individually, which may lead to potential mechanical performance issues. Further mechanical analysis is needed to determine the appropriate design. Therefore, this invention provides two node designs, one with and one without the connection plate structure. Figures 4-6 The front view, side view, and top view of the designed internal nodes; Figures 7-9 Provide the front view, side view, and top view of the designed external nodes; Figures 10-12 Provide the front view, side view, and top view of the designed external node.

[0114] Figure 13 (a) and (b) respectively show the installation process of nodes under two different constructions. Taking the node with a connecting plate as an example, the installation process is as follows: Figure 13 As shown in (a), the core square steel column is first positioned, then the prefabricated MiC unit (including the pre-welded positioning connecting plate) is placed, and then the shear connector is positioned and fixed by bolts. After all the lower bolts are installed and the nuts are tightened, the upper core square steel column and MiC unit are positioned and placed, and finally all the upper through bolts are installed, thus completing the node installation.

[0115] The MiC structure based on this invention consists of a core CFST column composed of hexagonal modular columns. The hexagonal modular columns are connected to the core square steel tube column through four symmetrically distributed faces. Compared with existing designs, this invention has the following advantages:

[0116] 1. The columns designed in this way are more robust and provide better mechanical performance, making them suitable for use in taller buildings and facilities that withstand higher loads.

[0117] 2. This design uses through bolts to connect modules, which not only makes construction and installation simpler, faster, and quicker, but also allows all components except the core CFST and through bolts to be detachable, facilitating future dismantling and recycling of the structure.

[0118] 3. By employing hexagonal modular columns with wider sides, this design will be able to combine new technologies such as robotics and AI-based automatic control to advance the development of intelligent construction and engineering.

[0119] 4. The components are simple in structure and inexpensive, enabling mass production in factories and showing great potential for large-scale practical application in the future.

[0120] The above description provides a further detailed explanation of the present invention in conjunction with specific / preferred embodiments, and it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the scope of protection of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications can be made herein without departing from the scope of protection of the patent application.

Claims

1. A modular building that is detachable and reusable, characterized in that, include: A series of core square steel tube columns (CFSTs), with concrete filling the core square steel tube columns, serve as the core support of the building and provide the main vertical load-bearing capacity; A series of hexagonal modular columns, which, together with the core square steel tube column, form a robust column structure to support the building load; A series of shear-resistant connectors are installed in the core of the core square steel tube column to connect the upper and lower core square steel tube columns, thereby enhancing the shear resistance of the structure. The hexagonal module column, the core square steel pipe column, and the shear-resistant connector are provided with corresponding preset holes and fastened with through bolts and nuts to achieve fixation and connection between components.

2. The modular building that is detachable and reusable according to claim 1, characterized in that, It also includes a series of connecting plates, which are installed on the hexagonal module column. The connecting plates, the hexagonal module column, the core square steel pipe column and the shear-resistant connector are connected by through bolts and nuts to enhance the connection strength between modules.

3. The modular building that is detachable and reusable according to claim 1, characterized in that, Without using connecting plates, the hexagonal module column, the core square steel pipe column, and the shear-resistant connector are connected together using through bolts and nuts.

4. The modular building that is detachable and reusable according to claim 2, characterized in that, Four of the symmetrically distributed faces of the hexagonal modular column are connected to the core square steel tube column inside the hexagonal modular column by bolts and nuts.

5. The modular building that is detachable and reusable according to claim 2, characterized in that, The connecting plate is installed on the outside of the hexagonal module column and is used to connect the upper and lower hexagonal module columns.

6. The modular building that is detachable and reusable according to claim 1, characterized in that, The shear-resistant connector is installed in the core of the core square steel column and is connected to the core square steel columns of the upper and lower layers by through bolts to enhance the shear resistance of the structure.

7. The modular building that is detachable and reusable according to claim 1, characterized in that, The hexagonal modular columns and beams are prefabricated and welded together in the factory to form individual MiC modular units, which facilitates transportation and rapid on-site assembly.

8. The modular building that is detachable and reusable according to claim 2, characterized in that, The connecting plate has preset mounting holes for engaging with the through bolts to achieve rapid positioning and installation.

9. The modular building that is detachable and reusable according to claim 1, characterized in that, The shear-resistant connector has a shape that matches the inner cavity of the core square steel pipe column to ensure the stability and reliability of the installation.

10. The modular building that is detachable and reusable according to claim 1, characterized in that, The long side of the hexagonal modular column fits against the surface of the core square steel pipe column to ensure a tight and stable connection.

11. The modular building that is detachable and reusable according to claim 1, characterized in that, The building includes internal nodes, external nodes, and corner nodes, which are used to connect the modular units inside, outside, and corner of the building to ensure the integrity and stability of the building.

12. The modular building that is detachable and reusable according to claim 1, characterized in that, The sides of the hexagonal modular column have sufficient width to facilitate integration with robotics and AI automatic control technologies.

13. A method for constructing a detachable and reusable modular building as described in any one of claims 1 to 11, characterized in that, Includes the following steps: Prefabricated hexagonal modular columns form modular units; Position and install the core square steel pipe column at the construction site; The long side surface of the hexagonal module column is attached to the surface of the core square steel tube column; Position and install the shear-resistant connector at the core of the core square steel pipe column; The hexagonal module column, core square steel pipe column and shear connector are connected and fixed by through bolts and nuts to realize the connection between the internal components of the module and adjacent modules. Install the upper core square steel pipe columns and module units according to the above steps; Concrete is filled into the core square steel tube column to form a concrete-filled square steel tube column (CFST) to enhance the overall mechanical properties of the structure.

14. The method for constructing a detachable and reusable modular building according to claim 13, characterized in that, Includes the following steps: Prefabricate hexagonal modular columns and pre-weld connecting plates to the outside of the hexagonal modular columns to form modular units; Position and install the core square steel pipe column at the construction site; The long side surface of the hexagonal module column is attached to the surface of the core square steel tube column; Position and install the shear-resistant connector at the core of the core square steel pipe column; The connecting plate, the hexagonal module column, the core square steel pipe column, and the shear-resistant connector are connected and fixed by through bolts and nuts, thereby realizing the connection between the internal components of the module and adjacent modules; Install the upper core square steel pipe columns and module units according to the above steps; Concrete is filled into the core square steel tube column to form a concrete-filled square steel tube column (CFST) to enhance the overall mechanical properties of the structure.

15. A method for constructing a modular building that is detachable and reusable as described in claim 13, characterized in that, Includes the following steps: Prefabricated hexagonal modular columns form modular units; Position and install the core square steel pipe column at the construction site; The long side surface of the hexagonal module column is attached to the surface of the core square steel tube column; Position and install the shear-resistant connector at the core of the core square steel pipe column; Without using connecting plates, the hexagonal module column, core square steel pipe column and shear-resistant connector are connected and fixed by through bolts and nuts to realize the connection between the internal components of the module and adjacent modules. Install the upper core square steel pipe columns and module units according to the above steps; Concrete is filled into the core square steel tube column to form a concrete-filled square steel tube column (CFST) to enhance the overall mechanical properties of the structure.

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