A cold-formed steel modular building

Abstract

The application provides a cold-bending steel module building, which comprises a bottom unit, a plurality of corner columns, a plurality of middle columns, a plurality of cross beams, and a top unit, wherein the bottom unit is arranged at a use site as required and connected with a foundation through a plurality of first fixing members; the corner columns are connected with the bottom unit respectively and connected with the foundation through second fixing members respectively; the middle columns are arranged on the bottom unit and placed between adjacent corner columns, and the middle columns are connected with the first fixing members respectively; the cross beams are arranged between adjacent corner columns and adjacent middle columns and connected with the corner columns and the middle columns through a plurality of third fixing members respectively; and the top unit is arranged on the corner columns and the middle columns respectively and connected with the corner columns and the middle columns through a plurality of fourth fixing members respectively. The cold-bending steel module building forms a multidimensional fixed system and a collaborative bearing integral frame, which significantly improves the structural connection reliability, lateral displacement stiffness and living safety, and enhances the construction flexibility and multi-module combination adaptability.

Description

Technical Field

[0001] This invention relates to the field of building technology, and in particular to a cold-formed steel modular building. Background Technology

[0002] In the field of modular construction, modular assembly is widely used in temporary buildings, affordable housing, and other scenarios due to its advantages such as high construction efficiency and flexible assembly. However, existing modular buildings have significant technical defects in structural connection stability and roof waterproofing performance, which seriously restrict their quality and durability, becoming a key bottleneck for the industry's promotion and application.

[0003] From a structural connection perspective, traditional modular buildings primarily rely on limiting connectors and upper / lower clamps for connection between upper and lower modules. Some multi-module combinations (such as modules with corridors) cannot effectively connect due to conflicting corner fitting positions, resulting in insufficient reliability of inter-module connections and inadequate seismic performance to meet actual usage requirements. Simultaneously, the connection design between traditional modular buildings and their foundations has significant shortcomings. Not only are there few connection points, but foundation connectors can only be installed on the exterior of the building. This connection method easily exposes the exterior structure to excessive shear force, leading to loosening of connectors and structural displacement during long-term use, directly threatening the overall structural safety of the building. Furthermore, the beams and columns of conventional modular buildings are mostly independent load-bearing structures, failing to form a collaborative load-bearing system. In addition, the infill walls often use composite panels, which lack load-bearing capacity, resulting in weak overall lateral stiffness. Under the influence of strong winds, earthquakes, and other external forces, structural deformation or even collapse is likely, seriously affecting residential safety. Summary of the Invention

[0004] The purpose of this invention is to provide a cold-formed steel modular building that can solve the above-mentioned technical problems;

[0005] This invention provides a cold-formed steel modular building, comprising:

[0006] The bottom unit is installed at the site of use as needed and connected to the foundation via several first fasteners;

[0007] Several corner posts are connected to the bottom unit, and several corner posts are connected to the foundation through a second fastener;

[0008] Several central columns are set on the bottom unit and placed between adjacent corner columns, and the several central columns are respectively connected to several first fixing members;

[0009] Several crossbeams are set between adjacent corner columns and adjacent center columns, and are respectively connected to the corner columns and center columns by several third fasteners;

[0010] The top unit is set on several corner posts and several middle posts respectively, and is connected to several corner posts and several middle posts respectively through several fourth fasteners.

[0011] As a further technical solution, the bottom unit includes:

[0012] Several bottom beams are connected end to end to form the base frame;

[0013] Several reinforcing columns are installed inside the base frame, and sanitary units are formed between the reinforcing columns.

[0014] As a further technical solution, the horizontal plane at the top of the sanitary unit is lower than the horizontal plane at the top of several reinforcing columns.

[0015] As a further technical solution, the corner pillars include:

[0016] The column has a first end plate and a second end plate at both ends; and an installation space is formed inside the column; in addition, a number of first mounting holes are provided on the column, and a number of third fasteners pass through the number of first mounting holes and are connected to a number of crossbeams.

[0017] A connector is disposed on the first end plate and is positioned opposite to the first connecting hole on the first end plate;

[0018] The second end plate is provided with a second connecting hole; the second connecting hole is fitted onto the second fixing member and connected to the foundation through a locking member.

[0019] As a further technical solution, the connector is provided with a detachable lifting ring; one end of the lifting ring passes through the first connecting hole and is connected to the connector.

[0020] As a further technical solution, after the lifting ring is disassembled, a fifth fixing member is installed inside the connector, and a protective head is provided on the fifth fixing member.

[0021] As a further technical solution, the column is provided with an installation port that communicates with the installation space; several reinforcing bodies pass through the installation port and are fixed in the installation space.

[0022] As a further technical solution, the central column includes:

[0023] The support body and the first and second fixing plates are provided at both ends of the support body; the first and second fixing plates are respectively provided with a number of third connecting holes and a number of fourth connecting holes; in addition, a number of second mounting holes are provided on the side wall of the support body, and a number of third fixing members pass through the number of second mounting holes and are connected to a number of crossbeams.

[0024] The third connecting hole is fitted onto the first fixing member and connected to the foundation through the locking member;

[0025] The fourth connecting hole is fitted onto the fourth fixing member and connected to the top unit through a locking member.

[0026] As a further technical solution, the top unit includes:

[0027] Several top beams are set between several corner columns and connected to several central columns respectively;

[0028] Several support beams are set between several top beams, and the intersection of several support beams forms several support units;

[0029] The top slab is set on several top beams and several supporting beams.

[0030] As a further technical solution, it also includes: exterior wall panels and interior wall panels, which are installed on several corner columns and several central columns, and several central columns are placed between the exterior wall panels and the interior wall panels.

[0031] In this invention, the bottom unit is directly connected to the foundation via several first fasteners, increasing the connection strength between the building and the foundation and avoiding the risk of loosening of the fasteners and structural displacement caused by concentrated shear forces on the outside. The corner columns are simultaneously connected to the foundation via second fasteners, and the middle columns are fixed in conjunction with the first fasteners, forming a multi-dimensional fixing system of the bottom unit, corner columns, middle columns, and foundation, further enhancing the connection stability between the building and the foundation. Furthermore, the beams are connected to the corner columns and middle columns via third fasteners, and the top unit is connected to the corner columns and middle columns via fourth fasteners, enabling the bottom unit, vertical supports (corner columns and middle columns), horizontal components (beams), and top unit to form a collaborative load-bearing overall frame. Compared to the dispersed force distribution mode in existing technologies, the even distribution of middle columns between adjacent corner columns effectively compensates for the weakness of composite panel infill walls in bearing loads, significantly improving the building's lateral stiffness. Under the influence of external forces such as strong winds and earthquakes, it can reduce the risk of structural deformation or even collapse, ensuring residential safety.

[0032] Furthermore, the standardized connection method using the first, second, third, and fourth fasteners in this invention eliminates the need for specific corner brackets in connecting the corner columns, central columns, beams, and top units. This allows for flexible adjustment of the installation positions of the central columns and beams according to module combination requirements, eliminating concerns about connector position conflicts and improving the adaptability of multi-module combinations. Simultaneously, the detachable connection of each component via fasteners, compared to traditional welding-based assembly methods, not only reduces construction difficulty but also facilitates later module disassembly, relocation, and reassembly. This aligns with the core requirement of "flexible reuse" in modular architecture, expanding the building's application potential in temporary buildings, affordable housing, and other scenarios.

[0033] Furthermore, the connection nodes of the bottom unit, corner columns, and central columns in this invention are clear, and the connection components that are easily exposed and corroded in traditional buildings are not used, which reduces the maintenance costs caused by node corrosion during long-term use; the coordinated stress characteristics of the overall frame also reduce the load-bearing pressure of individual components, extend the overall service life of the building, indirectly reduce the user's later maintenance investment, and take into account both structural safety and economic use. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a perspective view of a cold-formed steel modular building according to the present invention;

[0036] Figure 2 This is a schematic diagram of the bottom unit in this invention;

[0037] Figure 3 This is a schematic diagram of the corner pillar structure in this invention;

[0038] Figure 4 This is a structural schematic diagram showing the connection state between the corner column and the foundation in this invention;

[0039] Figure 5 A structural diagram showing one state of the top of the corner column;

[0040] Figure 6 This is a structural diagram showing another state of the top of the corner column;

[0041] Figure 7 A structural diagram showing the connection state of adjacent corner pillars;

[0042] Figure 8 A 3D view showing the connection between the bottom of the corner column and the base beam;

[0043] Figure 9 A 3D view showing the connection between the top of the corner column and the top beam;

[0044] Figure 10 A structural schematic diagram showing the connection between the central column and the bottom beam;

[0045] Figure 11 This is a 3D view showing the connection between the central column and the bottom beam.

[0046] Figure 12 This is a 3D view showing the connection between the central column and the top beam.

[0047] Figure 13 This is a structural schematic diagram of the stacked state of the cold-formed steel module building in this invention;

[0048] Figure 14 This is a three-dimensional view of the stacked state of the cold-formed steel modular building in this invention.

[0049] Explanation of reference numerals in the attached figures:

[0050] 100-Bottom Unit; 101-Bottom Beam; 102-Reinforcing Column; 103-Sanitary Unit; 200-First Fixing Component; 201-Embedded Bolt; 202-Connecting Sleeve; 203-Positioning Bolt; 300-Corner Column; 301-Column Body; 302-First End Plate; 303-Second End Plate; 304-Installation Space; 305-Connecting Component; 306-First Connecting Hole; 307-Second Connecting Hole; 308-Lifting Ring; 309-Fifth Fixing Component; 310-Protective Head; 311-Reinforcing Body; 3111-Reinforcing Plate; 3112-Reinforcing Pipe; 400-Second Fixing Component; 500-Central Column; 501-Support Body; 502-First Fixing Plate; 600-Crossbeam; 700-Third Fixing Component; 800-Top Unit; 801-Top Beam; 802-Top Plate; 900-Fourth Fixing Component; 1000-Foundation. Detailed Implementation

[0051] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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 limiting this invention.

[0053] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] like Figure 1-12 As shown, the present invention proposes a cold-formed steel modular building, comprising:

[0055] The bottom unit 100 is installed at the site of use as needed and connected to the foundation 1000 via several first fasteners 200. Specifically, one end of the first fastener 200 is embedded in the foundation 1000, and the other end passes through the bottom unit 100, thus limiting the bottom unit 100. Several corner posts 300 are respectively connected to the bottom unit 100, and the corner posts 300 are respectively connected to the foundation 1000 via second fasteners 400. Specifically, the second fasteners 400 are embedded in the foundation 1000, and the corner posts 300 are fitted onto the second fasteners 400, thus limiting the bottom unit 100. The fixing member 400 fixes the corner post 300 to the foundation 1000; wherein, after the corner post 300 is placed on the second fixing member 400, it is connected to the second fixing member 400 by a nut to fix the corner post 300 to the foundation 1000; a number of middle posts 500 are arranged on the bottom unit 100 and placed between adjacent corner posts 300, and the number of middle posts 500 are respectively connected to a number of first fixing members 200; after the middle posts 500 are pressed tightly against the bottom unit 100, their bottoms are fitted onto the first fixing members 200 and connected to the first fixing members 200 by nuts to fix the middle posts 500 to the bottom unit 100;

[0056] Several crossbeams 600 are arranged between adjacent corner posts 300 and adjacent middle posts 500, and are respectively connected to the corner posts 300 and middle posts 500 by several third fasteners 700; specifically, the crossbeams 600 can be fixed between the corner posts 300 and middle posts 500, or between adjacent middle posts 500, to increase the overall stability, depending on actual needs; the number of crossbeams 600 is set according to actual needs, and the present invention is not further limited; the top unit 800 is respectively arranged on several corner posts 300 and several middle posts 500, and is connected by several fourth fasteners 900. The corner posts 300 and the middle posts 500 are connected separately. After the corner posts 300 and the middle posts 500 come into contact with the top unit 800, the corner posts 300 and the top unit 800 are fixed together and the middle posts 500 and the top unit 800 are fixed together respectively by the fourth fixing member 900. Ensure that the top unit 800 is supported by the corner posts 300 and the middle posts 500 after fixing. It should be noted that there are four corner posts 300, which are respectively set at the four corners of the bottom unit 100. The middle posts 500 are selected according to the actual situation, and the present invention will not further limit them.

[0057] In this invention, the bottom unit 100 is directly connected to the foundation 1000 through several first fasteners 200, which increases the connection strength between the building and the foundation 1000 and avoids the risk of loosening of the connectors 305 and structural displacement caused by concentrated shear force on the outside. The corner column 300 is also connected to the foundation 1000 through second fasteners 400, and the middle column 500 is fixed in conjunction with the first fasteners 200, forming a multi-dimensional fixing system of the bottom unit 100, corner column 300, middle column 500 and foundation 1000, which further enhances the connection stability between the building and the foundation 1000. Furthermore, the beam 600 is connected to the corner column 300 and the central column 500 via the third fastener 700, and the top unit 800 is connected to the corner column 300 and the central column 500 via the fourth fastener 900. This allows the bottom unit 100, vertical supports (corner column 300 and central column 500), horizontal components (beam 600), and top unit 800 to form a cohesive load-bearing frame. Compared to the dispersed stress distribution mode in existing technologies, the even distribution of the central column 500 among adjacent corner columns 300 effectively compensates for the shortcomings of composite panel infill walls in bearing loads, significantly improving the building's lateral stiffness. Under the action of external forces such as strong winds and earthquakes, it can reduce the risk of structural deformation or even collapse, ensuring residential safety.

[0058] Furthermore, the standardized connection method using the first fixing member 200, the second fixing member 400, the third fixing member 700, and the fourth fixing member 900 in this invention allows the connection between the corner column 300, the central column 500, the crossbeam 600, and the top unit 800 to be independent of specific corner members. The installation positions of the central column 500 and the crossbeam 600 can be flexibly adjusted according to the module combination requirements, eliminating concerns about positional conflicts with the connector 305 and improving the adaptability of multi-module combinations. Simultaneously, the components are detachably connected via fixing members. Compared to traditional welding-based assembly methods, this not only reduces construction difficulty but also facilitates the disassembly, relocation, and reassembly of modules later on. This aligns with the core requirement of "flexible reuse" in modular architecture and expands the application potential of the building in temporary buildings, affordable housing, and other scenarios.

[0059] Furthermore, the connection nodes of the bottom unit 100, corner column 300, and central column 500 in this invention are clear, and the connection components that are easily exposed and corroded in traditional buildings are not used, which reduces the maintenance costs caused by node corrosion during long-term use; the coordinated stress characteristics of the overall frame also reduce the load-bearing pressure of individual components, extend the overall service life of the building, indirectly reduce the user's later maintenance investment, and take into account both structural safety and economic use.

[0060] like Figure 2 As shown, the bottom unit 100 includes several bottom beams 101, which are connected end to end to form a base frame; several reinforcing columns 102 are set inside the base frame, and the reinforcing columns 102 form a sanitary unit 103; specifically, the several bottom beams 101 are connected end to end and welded to form the base frame; installation grooves are provided at the four corners of the base frame, and the corner columns 300 are placed in the installation grooves and connected to the base frame; the reinforcing columns 102 are set inside the base frame, which increases the strength of the base frame and allows for the installation of indoor components (such as floor panels) on the reinforcing columns 102; and the toilet is installed at the sanitary unit 103, which facilitates quick acquisition of the installation positions of each part and improves the efficiency of subsequent assembly;

[0061] Specifically, the top of the sanitary unit 103 is lower than the top of the reinforcing columns 102. The sanitary unit 103 is also composed of reinforcing columns 102, but the dimensions of these columns are smaller than those of the reinforcing columns 102 placed inside the base frame. This ensures that the top of the sanitary unit 103 is lower than the top of the reinforcing columns 102. This allows for better installation of drainage pipes after the installation of bathroom fixtures. Furthermore, in the event of leaks, water is less likely to enter the room.

[0062] like Figure 3 and Figure 4As shown, the corner post 300 includes a post body 301 and a first end plate 302 and a second end plate 303 disposed at both ends of the post body 301; and an installation space 304 is formed inside the post body 301; in addition, a plurality of first mounting holes are provided on the post body 301, and a plurality of third fixing members 700 pass through the plurality of first mounting holes and are connected to a plurality of crossbeams 600; a connector 305 is disposed on the first end plate 302 and is disposed opposite to the first connecting hole 306 on the first end plate 302; a second connecting hole 307 is provided on the second end plate 303; the second connecting hole 307 is sleeved on the second fixing member 400 and is connected to the foundation 1000 by a locking member;

[0063] After the corner post 300 is placed in the mounting groove, the third fixing member 700 passes through the first mounting hole and connects to the mounting groove. Specifically, several first mounting holes are provided at both ends of the post 301. After the post 301 is placed in the mounting groove, several third fixing members 700 pass through several first mounting holes and are placed in the base frame. The post 301 is locked to the base frame by locking members, thereby fixing the post 301 in the mounting groove. In this invention, the third fixing member 700 is a bolt, and the locking member is a nut. The post 301 is fixed to the mounting groove by the cooperation of the bolt and nut. In addition, the number of first mounting holes is at least two, so that the post 301 and the base frame will not rotate after being fixed. The specific number is subject to actual conditions and is not further limited in this invention.

[0064] When the corner post 300 is fixed to the foundation 1000, the second connecting hole 307 is fitted onto the second fixing member 400, and the corner post 300 and the foundation 1000 are locked together by the locking member, thus fixing the corner post 300 and the foundation 1000. The second fixing member 400 is a chemical bolt, with one end pre-embedded in the foundation 1000 and the other end placed outside the foundation 1000. After the second connecting hole 307 is fitted, the corner post 300 and the foundation 1000 are connected by the locking member and the chemical bolt through a threaded connection. At the same time, after the corner post 300 and the foundation 1000 are connected, both the locking member and the second fixing member 400 are placed inside, which does not affect the installation of external components (external wall cladding panels, etc.). The preferred locking member is a nut.

[0065] like Figures 5-7 As shown, a detachable lifting ring 308 is provided on the connector 305; one end of the lifting ring 308 passes through the first connecting hole 306 and is connected to the connector 305; in actual use, the lifting ring 308 is passed through the first connecting hole 306 and connected to the connector 305; this allows for hoisting operations of the entire assembly in conjunction with hoisting equipment; after hoisting is completed, the lifting ring 308 is separated from the connector 305; the lifting ring 308 can be reused; wherein, the connector 305 is preferably a nut, which is welded to the first end plate 302;

[0066] After the lifting ring 308 is disassembled, a fifth fixing member 309 is installed inside the connecting member 305, and a protective head 310 is provided on the fifth fixing member 309. Specifically, the fifth fixing member 309 is a bolt, which is threadedly connected to the connecting member 305. After the nut of the fifth fixing member 309 contacts the connecting member 305, the other end of the fifth fixing member 309 is placed outside the first end plate 302, and a protective head 310 is threadedly connected to this end. When other components are connected to the corner post 300, they can be connected through the fifth fixing member 309. The fixing member 309 is used for positioning; and after other components (when stacked, adjacent corner posts 300 are connected by the fifth fixing member 309) are installed, it cooperates with the locking member to fix the other components to the corner posts 300; wherein, the protective head 310 protects the other end of the fifth fixing member 309 to prevent it from being bumped; in addition, after other components are fitted onto the fifth fixing member 309, the protective head 310 is removed, the locking member is installed, and the other components are connected to the corner posts 300 through the cooperation of the locking member and the fifth fixing member 309.

[0067] In addition, the column 301 has an installation port communicating with the installation space 304; several reinforcing bodies 311 pass through the installation port and are welded and fixed inside the installation space 304; on the one hand, the installation port facilitates operation inside the column 301, and on the other hand, the cooperation between the installation space 304 and the installation port reduces the overall weight of the column 301; at the same time, the reinforcement bodies 311 ensure the strength of the column 301; wherein, the reinforcing body 311 includes a reinforcing plate 3111 and a reinforcing tube 3112, the reinforcing plate 3111 is welded inside the installation space 304, and the reinforcing tube 3112 is welded to the reinforcing plate 3111; at the same time, the reinforcing tube 3112 is flush with the outer surface of the column 301 after welding, and will not affect the installation of the exterior wall cladding, etc.; at the same time, it can also serve as an installation point to improve the stability of the exterior wall cladding, etc. after installation; the number of reinforcing bodies 311 depends on the actual situation, and the present invention does not further limit it.

[0068] like Figure 10-12As shown, the central column 500 includes a support body 501 and a first fixing plate 502 and a second fixing plate disposed at both ends of the support body 501. The first fixing plate 502 and the second fixing plate are respectively provided with a plurality of third connecting holes and fourth connecting holes. During use, when the first fixing plate 502 contacts the base frame, the third connecting holes are fitted onto the first fixing member 200, and connected to the foundation 1000 via locking members. The first fixing member 200 includes a pre-embedded bolt 201, a connecting sleeve 202, and a positioning bolt 203. One end of the pre-embedded bolt 201 is pre-embedded in the foundation 1000, and the other end is connected to the connecting sleeve 202. The positioning bolt 203 passes through the third connecting hole and connects to the connecting sleeve 202, thereby realizing the connection between the support body 501 and the base frame. The support 501 is connected to the base frame. After connection, the support 501 is connected to the base frame, and the first fastener 200 connects both the support 501 and the base frame to the foundation 1000, increasing the strength of the base frame and support 501 after fixation. When the second fixing plate contacts the top unit 800, the fourth connecting hole is fitted onto the fourth fastener 900 and connected to the top unit 800 through a locking member, thus fixing the support 501 to the top unit 800. In this invention, both the third fastener 700 and the fourth fastener 900 are bolts. The number of third and fourth connecting holes is at least two to prevent rotation after connection. The specific number depends on the actual situation and is not further limited in this invention.

[0069] In addition, several second mounting holes are provided on the side wall of the support body 501, and several third fasteners 700 pass through the several second mounting holes and are connected to several crossbeams 600. Specifically, the crossbeams 600 are connected to the support body 501 by the third fasteners 700. It should be noted that the third connecting holes are waist holes, which can adjust the position of the third fasteners 700 as needed when connecting the crossbeams 600, thereby realizing the adjustment of the position of the crossbeams 600. The number of second mounting holes is at least two to avoid rotation after connection. The specific number depends on the actual situation and is not further limited in this invention.

[0070] like Figure 1 , Figure 9 and Figure 12As shown, the top unit 800 includes several top beams 801 arranged between several corner columns 300 and connected to several central columns 500 respectively; several support beams are arranged between the top beams 801 and intersect to form several support units; a top plate 802 is arranged on the top beams 801 and the support beams; specifically, after the top beams 801 contact the corner columns 300 or the central columns 500, the top beams 801 are connected to the corner columns 300 and the central columns 500 respectively by bolts and nuts, so that the top beams 801 are connected to the corner columns 300 and the central columns 500 through the joint of the several corner columns 300 and the several support beams 500. The central column 500 works together to support the top unit 800; in addition, the top plate 802 should extend out of the top beam 801 so that rainwater on the top plate 802 can slide down along the top plate 802 without contacting the top beam 801 during the sliding process. Specifically, the extension length of the top plate 802 is 150-200mm, which can effectively prevent rainwater from seeping in along the gaps of the top beam 801; the top plate 802 is a roof tile, and the roof tile overlap method is a slope overlap, with an overlap length of not less than 50mm, which can effectively waterproof and improve drainage efficiency.

[0071] In this invention, an outer wall panel and an inner wall panel are also provided. The outer wall panel (such as an outer wall cladding panel) and the inner wall panel (such as a decorative panel) are set on a number of corner columns 300 and a number of central columns 500, and the number of central columns 500 are placed between the outer wall panel and the inner wall panel. By setting the inner wall panel and the outer wall panel, the central columns 500 are wrapped inside. On the one hand, the external contact with the central columns 500 is avoided, reducing the wear and tear on the central columns 500. On the other hand, by building the central columns 500 inside, the overall size can be reduced, further reducing the space occupancy rate.

[0072] like Figure 13 and Figure 14 As shown, the cold-formed steel modular building of this invention can be constructed as needed, by stacking multiple cold-formed steel modular buildings, or by setting multiple cold-formed steel modular buildings adjacent to each other while stacking them. Specifically, when stacking them vertically, the corner posts 300 in the lower layer of the cold-formed steel modular building are connected by bolts through the cooperation of the second mounting holes in the corner posts 300 in the upper layer of the cold-formed steel modular building and the first mounting holes in the upper layer of the cold-formed steel modular building. After the top beam 801 in the lower layer of the cold-formed steel modular building comes into contact with the bottom beam 101 in the upper layer of the building, they are connected by a number of bolts and nuts. In addition, adjacent corner posts 300 of adjacent cold-formed steel modular buildings are connected by bolts and nuts. After the connection, it can be ensured that there is a connection between adjacent cold-formed steel modular buildings and between the stacked cold-formed steel modular buildings, so that they can share the load and further ensure the overall stability.

[0073] Specifically, when stacked, the first mounting hole of the lower corner post 300 is aligned with the second mounting hole of the upper corner post 300, and can be connected with M18×80 grade 10.9 high-strength bolts with a bolt spacing of 120mm to ensure the connection strength between the upper and lower layers; the contact part between the lower top beam 801 and the upper bottom beam 101 is connected with M16×60 galvanized bolts, with 3 connection points set within each meter length; the corner posts 300 of adjacent modules are connected with M20×100 high-strength bolts to form an overall lateral force resisting system.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cold-formed steel modular building, characterized in that, The utility model relates to a kind of reinforced foundation, including: Bottom unit (100) is set as required in use ground, and is connected with foundation (1000) by several first fixing parts (200); Several corner columns (300) are connected with the bottom unit (100) respectively, and several corner columns (300) are connected with foundation (1000) by second fixing part (400) respectively; Several middle columns (500) are set on the bottom unit (100), and are placed between adjacent corner columns (300), and several middle columns (500) are connected with several first fixing parts (200) respectively; Several cross beams (600) are set between adjacent corner columns (300) and adjacent middle columns (500), and are connected with corner column (300) and middle column (500) by several third fixing parts (700) respectively; Top unit (800) is set on several corner columns (300) and several middle columns (500) respectively, and is connected with several corner columns (300) and several middle columns (500) by several fourth fixing parts (900) respectively; Wherein, the corner column (300) includes: column body (301) and the first end plate (302) and the second end plate (303) set in the column body (301) both ends;And mounting space (304) is formed in the column body (301);In addition, several first mounting holes are provided on the column body (301), and several third fixing parts (700) are connected with several cross beams (600) after passing through several first mounting holes;Connecting piece (305) is set on the first end plate (302), and is oppositely arranged with the first connecting hole (306) on the first end plate (302);Second connecting hole (307) is provided on the second end plate (303);The second connecting hole (307) is sleeved on the second fixing part (400), and is connected with foundation (1000) by locking part;In addition, mounting port is opened in the column body (301) and communicates with the mounting space (304); The middle column (500) includes: support body (501) and the first fixed plate (502) and the second fixed plate set in support body (501) both ends;Several third connecting holes and fourth connecting holes are respectively opened in the first fixed plate (502) and the second fixed plate;In addition, several second mounting holes are opened in the side wall of the support body (501), and several third fixing parts (700) are connected with several cross beams (600) after passing through several second mounting holes respectively;The third connecting hole is sleeved on first fixing part (200), and is connected with foundation (1000) by locking part;The fourth connecting hole is sleeved on the fourth fixing part (900), and is connected with top unit (800) by locking part; Several reinforcing bodies (311) are fixed in mounting space (304) after passing through mounting port, wherein, the reinforcing body (311) includes reinforcing plate (3111) and reinforcing pipe (3112), the reinforcing plate (3111) is welded in mounting space (304), and reinforcing pipe (3112) is welded on reinforcing plate (3111).

2. The cold-formed steel building module according to claim 1, wherein, The bottom unit (100) comprises: a plurality of bottom beams (101) which are connected end to end to form a bottom frame; a plurality of reinforcing columns (102) which are arranged in the bottom frame and form a sanitary unit (103) between the reinforcing columns (102).

3. The cold-formed steel building module according to claim 2, wherein, The sanitary unit (103) is arranged at a lower level than the reinforcing columns (102).

4. The cold-formed steel building module according to claim 1, wherein, A detachable lifting ring (308) is arranged on the connecting piece (305), and one end of the lifting ring (308) is connected to the connecting piece (305) after passing through the first connecting hole (306).

5. The cold-formed steel building module according to claim 4, wherein, When the lifting ring (308) is detached, a fifth fixing piece (309) is arranged in the connecting piece (305), and a protective head (310) is arranged on the fifth fixing piece (309).

6. The cold-formed steel building module according to claim 1, wherein, The top unit (800) comprises: a plurality of top beams (801) which are arranged between the corner columns (300) and connected to the middle columns (500); a plurality of support beams which are arranged between the top beams (801) and form a plurality of support units after being crossed; a top plate (802) which is arranged on the top beams (801) and the support beams.

7. The cold-formed steel building module according to claim 1, wherein, Further comprising: outer and inner wall panels which are arranged on the corner columns (300) and the middle columns (500) and place the middle columns (500) between the outer and inner wall panels.

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