Steel column assembly, prefabricated steel column module, steel structure, shear wall, and modular building

Abstract

Embodiments of the present application relate to the field of modular prefabricated buildings, and provide a steel column assembly, a prefabricated steel column module, a prefabricated steel structure, a prefabricated shear wall, and a modular building. The steel column assembly comprises a first steel column and a second steel column. The first steel column is of a hollow columnar structure and comprises a plurality of cross beams extending in a preset direction. The second steel column is of a hollow columnar structure. Welding grooves extending in the preset direction are formed in the side walls of the second steel column. The first steel column is embedded in the second steel column, and the welding grooves correspond to at least some of the cross beams. The first steel column and the second steel column are welded and fixed at the welding groove position. After welding is completed, the cross beams of the first steel column protrude out of the inner side walls of the second steel column, so as to form an anti-drawing structure, improving the anti-drawing performance between the insertion parts of the end portions of the upper layer steel structure and the lower layer steel structure after cement is poured. Moreover, the structure is convenient to operate, the welding speed and the production efficiency can be improved, and automatic production of modular buildings is achieved.

Description

Steel column assemblies, prefabricated steel column modules, steel structures, shear walls and modular buildings

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202310801806.X and application date June 30, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of modular prefabricated buildings, and specifically, to steel column assemblies, prefabricated steel column modules, prefabricated steel structures, prefabricated shear walls and modular buildings. Background Art

[0004] In existing technologies, modular prefabricated buildings consist of steel structures on both upper and lower floors, connected by plug-in connections. Typically, the connecting ends of the steel structures are designed to facilitate plug-in connections. After the connection is made, cement is poured into the steel structures, and once the cement solidifies, a stable and strong connection is achieved.

[0005] To enhance the pullout resistance between the ends of the upper and lower steel structures after cement pouring, pullout resistant components can be added to the ends of the steel structures. The current practice is to weld and deposit solder on the outside of the protruding core column at the top of the lower steel structure to form a strip-shaped protrusion, and to weld and deposit solder on the inner wall of the bottom end of the upper steel structure to form a strip-shaped protrusion.

[0006] However, due to the narrow internal space at the bottom of the upper steel structure, welding of tensile-resistant parts is extremely inconvenient and the stacking speed is slow, resulting in reduced production efficiency and hindering the realization of automated production.

[0007] Summary of the Invention

[0008] To solve the above problems, the embodiments of the present invention aim to provide a steel column assembly, a prefabricated steel column module, an assembled steel structure, a prefabricated shear wall and a modular building.

[0009] In a first aspect, an embodiment of the present invention provides a steel column assembly, comprising a first steel column and a second steel column, wherein the first steel column is a hollow cylindrical structure, comprising a plurality of beams extending along a preset direction; the second steel column is a hollow cylindrical structure, and the side wall of the second steel column is provided with a welding groove extending along the preset direction; the first steel column is embedded in the second steel column, and the welding groove corresponds to at least part of the beam, and the first steel column and the second steel column are welded and fixed at the position of the welding groove.

[0010] Furthermore, the first steel column also includes a vertical beam, which extends axially. The horizontal beam is connected between two adjacent vertical beams, and the vertical beams and the horizontal beams enclose the hollow columnar structure, wherein the axial direction and the preset direction have an angle.

[0011] Furthermore, a plurality of the transverse beams are provided between any two adjacent vertical beams, and the plurality of transverse beams between any two adjacent vertical beams are distributed in sequence and at intervals along the axial direction.

[0012] Furthermore, the multiple cross beams arranged between any two adjacent vertical beams are evenly spaced and distributed, and the spacing between any two adjacent cross beams is greater than the width of the cross beams.

[0013] Furthermore, there are multiple welding grooves, and all of the multiple welding grooves extend along the preset direction.

[0014] Furthermore, each side wall of the second steel column is provided with a plurality of welding grooves, the plurality of welding grooves on the same side wall are provided in sequence and spaced apart along the axial direction, and the plurality of welding grooves all correspond to the crossbeam of the first steel column.

[0015] Furthermore, the cross-section of the first steel column and the cross-section of the second steel column are the same in shape, and both are rectangular.

[0016] Furthermore, the maximum length dimension of the cross section of the first steel column is smaller than the minimum length dimension of the cross section of the second steel column, and the maximum width dimension of the cross section of the first steel column is smaller than the minimum width dimension of the cross section of the second steel column.

[0017] Furthermore, the distance between the outer side wall of the first steel column and the inner side wall of the second steel column is greater than or equal to 1 mm and less than or equal to 5 cm.

[0018] Furthermore, the end of the first steel column and the end of the second steel column are welded and fixed.

[0019] Furthermore, the outer sidewall of the end portion of the first steel column is chamfered, and / or the inner sidewall of the end portion of the second steel column is chamfered.

[0020] Furthermore, the first steel column is a rectangular steel plate, which is provided with a plurality of through slots extending along the preset direction, so that the crossbeam is formed between two adjacent through slots. The rectangular steel plate is bent multiple times in sequence along the preset direction, and the ends are welded after bending to form a hollow columnar structure.

[0021] Furthermore, the crossbeam is a bent structure, a wavy structure, an arc structure or a long straight structure; correspondingly, the welding groove is a bent structure, a wavy structure, an arc structure or a long straight structure.

[0022] In a second aspect, an embodiment of the present invention further provides a prefabricated steel column module, comprising a steel column body, an inner core column, and the above-mentioned steel column assembly;

[0023] The steel column includes a relative bottom end and a top end, the steel column assembly is fixedly connected to the bottom end of the steel column, the inner core column is fixedly connected to the top end of the steel column, and the inner core column protrudes from the top of the steel column, the maximum length dimension of the cross section of the inner core column is smaller than the minimum length dimension of the cross section of the first steel column, and the maximum width dimension of the cross section of the inner core column is smaller than the minimum width dimension of the cross section of the first steel column.

[0024] Furthermore, the outer side wall of the inner core column is provided with a ridge extending along the preset direction.

[0025] Furthermore, the steel column assembly is welded and fixed to the bottom end of the steel column body, and the welding positions are flush.

[0026] In the third aspect, an embodiment of the present invention provides an assembled steel structure, comprising at least two prefabricated steel column modules as described above, wherein the at least two prefabricated steel column modules include a lower steel column module and an upper steel column module, the steel column assembly of the upper steel column module is sleeved on the inner core column of the lower steel column module, and the steel column assembly of the upper steel column module is welded to the top of the steel column of the lower steel column module.

[0027] Furthermore, the outer side wall of the inner core column is provided with a ridge extending along the preset direction, and the outermost dimension of the inner core column provided with the ridge is smaller than the innermost dimension of the steel column assembly.

[0028] In a fourth aspect, an embodiment of the present invention further provides a prefabricated shear wall, comprising:

[0029] a shear wall body, the shear wall body having a receiving cavity; and

[0030] Two prefabricated steel column modules are fixedly connected to both sides of the shear wall body along the length direction, and the shear wall body and the two prefabricated steel column modules enclose a wall cavity for cast-in-place concrete.

[0031] Furthermore, the shear wall body includes an inner membrane shell and an outer membrane shell that are arranged relatively parallel to each other, and the inner membrane shell, the outer membrane shell and the two prefabricated steel column modules enclose the wall cavity.

[0032] Furthermore, it also includes a shear wall steel frame, which is fixedly connected to the wall cavity, and the two ends of the shear wall steel frame are respectively fixedly connected to the two prefabricated steel column modules.

[0033] Furthermore, the two prefabricated steel column modules are fixedly connected to both sides of the shear wall body along the length direction and are located in the accommodating cavity.

[0034] In a fifth aspect, an embodiment of the present invention further provides a modular building, comprising the above-mentioned steel column assembly, prefabricated steel column module, assembled steel structure or prefabricated shear wall.

[0035] This application has the following beneficial effects:

[0036] In the solution provided in the first aspect of the embodiment of the present invention, both the first steel column and the second steel column are hollow cylindrical structures, the first steel column includes multiple crossbeams, and the second steel column has multiple welding grooves. By adopting the method of sleeve connection between the first steel column and the second steel column, after the sleeve connection, the crossbeams of the first steel column correspond to the welding grooves of the second steel column. The crossbeams of the first steel column and the second steel column are welded from the position of the welding groove on the outside of the second steel column to achieve the fixation of the first steel column and the second steel column. And relative to the second steel column, the crossbeams of the first steel column protrude from the inner side wall of the second steel column, thereby forming a pull-out resistance structure, which is conducive to improving the pull-out resistance between the end plug-in parts of the upper and lower layers of the steel structure after pouring cement. And this structure is easy to operate. After the first steel column is embedded in the second steel column and the positions are aligned, welding is performed from the outside of the second steel column. The welding is convenient, which can increase the welding speed and production efficiency, and is conducive to the realization of automated production of modular buildings.

[0037] In the solution provided in the second aspect of the embodiment of the present invention, the prefabricated steel column module has the beneficial effects of the above-mentioned steel column assembly.

[0038] In the solution provided in the third aspect of the embodiment of the present invention, the prefabricated steel structure has the beneficial effects of the above-mentioned steel column assembly.

[0039] In the solution provided in the fourth aspect of the embodiment of the present invention, the prefabricated shear wall has the beneficial effects of the prefabricated steel column module.

[0040] In the solution provided in the fifth aspect of the embodiment of the present invention, the modular building has the beneficial effects of the above-mentioned steel column assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0042] FIG1 shows a schematic structural diagram of a steel column assembly provided by an embodiment of the present invention;

[0043] FIG2 shows an exploded schematic diagram of a steel column assembly provided by an embodiment of the present invention;

[0044] FIG3 shows a schematic structural diagram of a first structure of a first steel column in a steel column assembly provided by an embodiment of the present invention;

[0045] FIG4 shows a cross-sectional view of a steel column assembly provided by an embodiment of the present invention;

[0046] FIG5 shows a schematic structural diagram of a second structure of a first steel column in a steel column assembly provided by an embodiment of the present invention;

[0047] FIG6 shows a schematic structural diagram of a prefabricated steel column module provided in an embodiment of the present invention;

[0048] FIG7 shows a schematic structural diagram of an assembled steel structure provided by an embodiment of the present invention;

[0049] FIG8 shows a cross-sectional view of the connection portion between the upper steel column module and the lower steel column module in the prefabricated steel structure provided by an embodiment of the present invention;

[0050] FIG9 shows a schematic structural diagram of a first type of prefabricated shear wall structure provided by an embodiment of the present invention;

[0051] FIG10 shows a schematic structural diagram of a second type of prefabricated shear wall structure provided by an embodiment of the present invention.

[0052] Icons: 100-steel column assembly; 001-preset direction; 003-axial direction; 005-first steel column; 007-cross beam; 009-vertical beam; 010-through groove; 013-second steel column; 015-welding groove; 200-prefabricated steel column module; 021-steel column body; 023-inner core column; 025-convex ridge; 300-assembled steel structure; 031-upper steel column module; 033-lower steel column module; 500-prefabricated shear wall; 510-shear wall body; 515-wall cavity; 5102-inner membrane shell; 5104-outer membrane shell; 530-shear wall steel frame. DETAILED DESCRIPTION

[0053] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0054] In the description of the present invention, it should be understood that the terms "vertical", "horizontal", "inside", "outside", "up", "down", "front", "back", "left", "right", "center", "longitudinal", "transverse", "length", "width", "thickness", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0055] 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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0056] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0057] A steel column assembly 100 is provided in an embodiment of the present application. Please refer to Figures 1 and 2 together. Figure 1 is a structural schematic diagram of the steel column assembly 100, and Figure 2 is an exploded schematic diagram of the steel column assembly 100.

[0058] The steel column assembly 100 includes a first steel column 005 and a second steel column 013. The first steel column 005 and the second steel column 013 are both hollow column structures. The first steel column 005 includes multiple beams 007, and the beams 007 extend along the preset direction 001; the side wall of the second steel column 013 is provided with a welding groove 015, and the welding groove 015 also extends along the preset direction 001.

[0059] During installation, the first steel column 005 is embedded within the second steel column 013, with the axis of the first steel column 005 aligned with the axis of the second steel column 013. The welding groove 015 of the second steel column 013 is aligned with at least part of the crossbeam 007 of the first steel column 005. The crossbeam 007 is then welded to the second steel column 013 from the outside at the welding groove 015, thereby securing the first steel column 005 to the second steel column 013.

[0060] After the upper and lower steel structures of the modular building are connected via an end-jointed structure and cement is poured into the interior of the steel structure, in order to enhance the pull-out resistance between the end-jointed portions of the upper and lower steel structures, two hollow cylindrical structures, a first steel column 005 and a second steel column 013, are used. The first steel column 005 includes multiple crossbeams 007, and the sidewalls of the second steel column 013 have multiple welding grooves 015. The first steel column 005 is embedded within the second steel column 013, with the crossbeams 007 of the first steel column 005 aligned with the welding grooves 015 of the second steel column 013. The crossbeams 007 are then welded to the second steel column 013 from the outside at the welding grooves 015. After welding, the crossbeams 007 of the first steel column 005 protrude from the inner sidewall of the second steel column 013, forming a concave and convex pull-out resistant structure. The steel column assembly 100 provided in the embodiment of the present application is easy to operate, has a simple structure, and is cleverly designed, which greatly improves the convenience of welding. While meeting the tensile strength requirements, it improves the welding speed and production efficiency, which is conducive to realizing automated production.

[0061] It is understood that, in order to improve the pull-out resistance, the extension direction of the pull-out resistance structure provided on the steel column assembly 100 is at an angle to the axial direction of the steel column assembly 100. That is, when the steel column assembly 100 is in use, the crossbeam 007 is not arranged vertically, but extends in a horizontal direction or an inclined direction.

[0062] The steel column assembly 100 provided in the embodiment of the present application is introduced in detail below.

[0063] Please refer to FIG. 3 , which is a schematic structural diagram of the first steel column 005 in the first structure.

[0064] Specifically, the first steel column 005 further includes a vertical beam 009, which is cross-connected with the horizontal beam 007 to form a hollow columnar structure.

[0065] Specifically, vertical beams 009 extend along an axial direction 003. There are multiple vertical beams 009, each parallel but not coplanar. Crossbeams 007 connect two adjacent vertical beams 009. Two adjacent vertical beams 009 and the crossbeam 007 located between them form a plane, and these multiple planes form a hollow cylindrical structure. Vertical beams 009 extend along an axial direction 003, while crossbeams 007 extend along a predetermined direction 001. The axial direction 003 and the predetermined direction 001 form an angle.

[0066] Furthermore, a plurality of transverse beams 007 are provided between any two adjacent vertical beams 009 , and the plurality of transverse beams 007 between any two adjacent vertical beams 009 are sequentially spaced apart along the axial direction 003 .

[0067] As shown in Figure 3, there are four vertical beams 009, arranged in parallel. Cross beams 007 connect two adjacent vertical beams 009, forming a rectangular frame structure. Two adjacent vertical beams 009 and the multiple cross beams 007 between them form a side wall. Each cross beam 007 on a side wall extends along a predetermined direction 001, and the multiple cross beams 007 are spaced apart in sequence along the axial direction 003.

[0068] Optionally, the preset direction 001 may be perpendicular to the axial direction 003 , that is, in the structure shown in FIG3 , in use, all horizontal beams 007 extend in the horizontal direction, and all vertical beams 009 extend in the vertical direction.

[0069] In an optional embodiment of the present application, the multiple horizontal beams 007 arranged between any two adjacent vertical beams 009 are evenly spaced.

[0070] In order to improve the pull-out resistance between the end joints of the upper and lower steel structures, the gap between the beams 007 of each side wall of the steel column assembly 100 should not be too small. Optionally, the spacing between two adjacent beams 007 is greater than or equal to the width of the beam 007.

[0071] Referring again to Figure 1 , the sidewall of the second steel column 013 can have multiple welding slots 015, each extending along a predetermined direction 001. By providing multiple welding slots 015 on the sidewall of the second steel column 013, welding can be performed from multiple locations within the welding slots 015, which not only facilitates welding operations but also helps improve weld strength.

[0072] Optionally, the plurality of welding grooves 015 may be located on the same side wall or on different side walls.

[0073] For example: multiple welding grooves 015 are respectively opened on each side wall of the second steel column 013, multiple welding grooves 015 are respectively opened on the same side wall of the second steel column 013, multiple welding grooves 015 are respectively opened on two opposite side walls of the second steel column 013, or multiple welding grooves 015 are respectively opened on two adjacent side walls of the second steel column 013, etc.

[0074] The present application does not limit the specific position of the welding groove 015 , as long as the crossbeam 007 of the first steel column 005 and the second steel column 013 are welded and fixed at the position of the welding groove 015 .

[0075] Preferably, each sidewall of the second steel column 013 is provided with a plurality of welding grooves 015. The welding grooves 015 on the same sidewall are sequentially spaced along the axial direction 003, and each of the welding grooves 015 corresponds to the crossbeam 007 of the first steel column 005. This facilitates welding the corresponding crossbeam 007 at each welding groove 015 from the outside of the second steel column 013.

[0076] Please refer to FIG. 1 and FIG. 4 . FIG. 4 is a cross-sectional view of the steel column assembly 100 .

[0077] In an optional embodiment of the present application, the cross-sectional shape of the first steel column 005 is the same as that of the second steel column 013, both being rectangular. Each sidewall of the second steel column 013 is uniformly provided with a plurality of welding slots 015. The number of welding slots 015 is the same as the number of crossbeams 007, and the multiple welding slots 015 are provided in a one-to-one correspondence with the multiple crossbeams 007. By welding at the welding slots 015, each crossbeam 007 is secured to the second steel column 013, thereby improving the strength of the steel column assembly 100 while still meeting the requirements for pull-out resistance.

[0078] In order to facilitate the embedding of the first steel column 005 into the second steel column 013, the maximum cross-sectional length dimension a1 of the first steel column 005 should be smaller than the minimum cross-sectional length dimension a2 of the second steel column 013, and the maximum cross-sectional width dimension b1 of the first steel column 005 should be smaller than the minimum cross-sectional width dimension b2 of the second steel column 013.

[0079] To ensure welding quality, optionally, the distance between the outer wall of the first steel column 005 and the inner wall of the second steel column 013 can be greater than or equal to 1 mm and less than or equal to 5 cm, that is, a2-a1 is greater than or equal to 1 mm and less than or equal to 5 cm; b2-b1 is greater than or equal to 1 mm and less than or equal to 5 cm. In other words, the gap between the first steel column 005 and the second steel column 013 should not be too large. When the gap is too large, it is not only not conducive to welding and fixing, but also difficult to ensure stability after welding. Of course, the gap between the first steel column 005 and the second steel column 013 should not be too small. When the gap is too small, the first steel column 005 is not easy to embed into the second steel column 013. This application does not limit the spacing between the first steel column 005 and the second steel column 013. As long as the first steel column 005 can be embedded in the second steel column 013, and the crossbeam 007 of the first steel column 005 can be fixed to the second steel column 013 by welding from the outside of the second steel column 013, it is sufficient.

[0080] In order to further improve the connection stability between the first steel column 005 and the second steel column 013 , in addition to welding and fixing at the position of the welding groove 015 , welding and fixing can also be performed at the end of the first steel column 005 and the end of the second steel column 013 .

[0081] Optionally, to facilitate welding, a weld is provided at the connection between the outer side wall of the end of the first steel column 005 and the inner side wall of the end of the second steel column 013. That is, the outer side wall of the end of the first steel column 005 is chamfered, and / or the inner side wall of the end of the second steel column 013 is chamfered.

[0082] By chamfering the connection position between the end of the first steel column 005 and the end of the second steel column 013 to form a weld seam, welding and fixing are facilitated.

[0083] Please refer to FIG. 5 , which is a schematic structural diagram of the second structure of the first steel column 005 .

[0084] Specifically, the first steel column 005 is a rectangular steel plate having multiple through slots 010 extending along a predetermined direction 001, so that a crossbeam 007 is formed between two adjacent through slots 010. The rectangular steel plate is bent multiple times along the predetermined direction 001 and then welded end to end to form a hollow columnar structure.

[0085] A hollow rectangular columnar structure can be formed by bending a rectangular steel plate having multiple through slots 010, for example, three times, so that a right angle is formed between two adjacent surfaces after bending, and welding the first surface and the fourth surface end to end.

[0086] Then, the first steel column 005 is embedded in the second steel column 013, and the welding groove 015 opened on the second steel column 013 is staggered with the through groove 010 on the first steel column 005, that is, the welding groove 015 corresponds to the crossbeam 007, and the crossbeam 007 and the second steel column 013 are welded from the outside of the second steel column 013 at the position of the welding groove 015.

[0087] In the above embodiment, the shape of the crossbeam 007 of the first steel column 005 is not limited and can be a bent structure, a wavy structure, an arc structure, a long straight structure, a long oblique structure, etc. Correspondingly, the welding groove 015 formed on the second steel plate can be a bent structure, a wavy structure, an arc structure, a long straight structure, a long oblique structure, etc.

[0088] The present application does not impose any restrictions on the specific shape of the crossbeam 007, as long as the position of the welding groove 015 corresponds to the crossbeam 007. Furthermore, when the first steel column 005 having the crossbeam 007 is welded to the second steel column 013, the crossbeam 007 of the first steel column 005 protrudes relative to the inner sidewall of the second steel column 013, and the extension direction of the crossbeam 007 forms an angle with the axial direction of the second steel column 013, so that the inner sidewall of the second steel column 013 forms a concave-convex structure, which has a pull-out resistance effect.

[0089] The forming method and working principle of the steel column assembly 100 provided in the embodiment of the present application are as follows, and are described by taking the first steel column 005 shown in FIG. 1 as an example.

[0090] Forming a first steel column 005 and a second steel column 013 respectively, forming a plurality of cross beams 007 extending along a preset direction 001 on the first steel column 005, and opening a plurality of welding grooves 015 extending along the preset direction 001 on the side wall of the second steel column 013;

[0091] The first steel column 005 is embedded in the second steel column 013, and the crossbeam 007 of the first steel column 005 corresponds to the welding groove 015 of the second steel column 013. Spot welding is performed on the ends of the first steel column 005 and the second steel column 013 to achieve preliminary fixation;

[0092] From the outer side surface of the second steel column 013 at the welding groove 015, the crossbeam 007 and the second steel column 013 are fully welded to achieve the first steel column 005 and the second steel column 013 being fixed as one.

[0093] The steel column assembly 100 provided in the embodiment of the present application converts "welding a pull-out resistant part on the inner wall of the second steel column 013" into: two steel columns, one large and one small (i.e., the first steel column 005 and the second steel column 013), are socketed together, and the steel column located on the inner side (the first steel column 005) is provided with a plurality of beams 007 extending along the preset direction 001, and the steel column located on the outer side (the second steel column 013) is provided with a welding groove 015 extending along the preset direction 001. After the two steel columns are socketed, the welding groove 015 of the outer steel column corresponds to the beam 007 of the inner steel column, and the beam 007 of the inner steel column is welded to the outer steel column through the welding groove 015 position, so as to realize the fixation of the second steel column 013 to the first steel column 005 with the beam 007, and complete the indirect welding of the beam 007 with pull-out resistance to the inner wall of the second steel column 013. The steel column assembly 100 has a simple structure and is easy to operate, and is convenient for socketing, welding and other processes, which can improve welding speed and production efficiency, and is conducive to further realizing automated production.

[0094] A prefabricated steel column module 200 is further provided in an embodiment of the present application. Please refer to FIG6 , which is a schematic structural diagram of the prefabricated steel column module 200 .

[0095] Specifically, prefabricated steel column module 200 may include a steel column body 021, an inner core column 023, and the aforementioned steel column assembly 100. Steel column body 021 is a hollow, elongated structure, comprising a bottom end and a top end. Steel column assembly 100 is fixedly connected to the bottom end of steel column body 021, while inner core column 023 is fixedly connected to the top end of steel column body 021, with inner core column 023 protruding from the top of steel column body 021.

[0096] Among them, the maximum cross-sectional length dimension of the inner core column 023 is smaller than the minimum cross-sectional length dimension of the first steel column 005 in the steel column assembly 100, and the maximum cross-sectional width dimension of the inner core column 023 is smaller than the minimum cross-sectional width dimension of the first steel column 005 in the steel column assembly 100. At the same time, the cross-sectional length dimension of the inner core column 023 is smaller than the cross-sectional length dimension of the steel column body 021, and the cross-sectional width dimension of the inner core column 023 is smaller than the cross-sectional width dimension of the steel column body 021. The cross-sectional length dimension of the second steel column 013 of the steel column assembly 100 is the same as the cross-sectional length dimension of the steel column body 021, and the cross-sectional width dimension of the second steel column 013 is the same as the cross-sectional width dimension of the steel column body 021. The steel column assembly 100 can be fixedly connected to the bottom end of the steel column body 021 by welding, and the welding position after welding is flush.

[0097] Optionally, in order to further improve the tensile strength between the end plug-in parts of the upper and lower steel structures, a ridge 025 extending along a preset direction can be provided on the outer side wall of the inner core column 023.

[0098] When the upper and lower layers of prefabricated steel column modules 200 are plugged in and poured with cement, a pull-out resistant structure is formed by the ridges 025 on the outer wall of the inner core column 023 and the crossbeams 007 on the inner wall of the steel column assembly 100, which can effectively improve the pull-out resistant performance of the steel structure.

[0099] The prefabricated steel column module 200 has the beneficial effects of the above-mentioned steel column assembly 100, which will not be described in detail here.

[0100] An assembled steel structure 300 is also provided in an embodiment of the present application. Please refer to Figures 7 and 8. Figure 7 is a structural schematic diagram of the assembled steel structure 300, and Figure 8 is a cross-sectional view of the connection portion between the upper steel column module 031 and the lower steel column module 033.

[0101] The assembled steel structure 300 includes at least two of the above-mentioned prefabricated steel column modules 200 , wherein the at least two prefabricated steel column modules 200 include a lower steel column module 033 and an upper steel column module 031 .

[0102] After installation, the steel column assembly 100 of the upper steel column module 031 is sleeved on the inner core column 023 of the lower steel column module 033, and the steel column assembly 100 of the upper steel column module 031 is abutted against the top of the steel column body 021 of the lower steel column module 033; after the installation is completed, cement is poured into the prefabricated steel structure 300 from above, and the cement is solidified to form an integrated structure.

[0103] For example, the prefabricated steel structure 300 includes two prefabricated steel column modules 200, namely a lower steel column module 033 and an upper steel column module 031. The steel column assembly 100 of the lower steel column module 033 is located at the bottom, and the inner core column 023 is located at the top. During installation, the steel column assembly 100 of the upper steel column module 031 is placed over the inner core column 023 of the lower steel column module 033, and the steel column assembly 100 of the upper steel column module 031 is mated and abutted with the steel column body 021 of the lower steel column module 033.

[0104] Furthermore, the outer wall of inner core column 023 is provided with a ridge 025 extending in a predetermined direction 001. The outermost dimension of inner core column 023 with ridge 025 is smaller than the innermost dimension of steel column assembly 100, facilitating smooth insertion. After the insertion is complete and cement is poured, the ridge 025 on the outer wall of inner core column 023 aligns with the crossbeam 007 on the inner wall of steel column assembly 100, forming a pullout-resistant structure that improves the pullout resistance of the cement after pouring.

[0105] The assembled steel structure 300 has the beneficial effects of the above-mentioned steel column module, which will not be described in detail here.

[0106] A prefabricated shear wall 500 is also provided in an embodiment of the present application. Please refer to FIG9 , which is a structural diagram of a first structure of the prefabricated shear wall 500 .

[0107] Specifically, the prefabricated shear wall 500 may include a shear wall body 510 and the above-mentioned prefabricated steel column module 200, the shear wall body 510 having a accommodating cavity; the number of prefabricated steel column modules 200 is two, the two prefabricated steel column modules 200 are fixedly connected to both sides of the shear wall body 510 along the length direction, and the shear wall body 510 and the two prefabricated steel column modules 200 enclose a wall cavity 515 for cast-in-place concrete.

[0108] The shear wall body 510 includes a receiving cavity. The shear wall body 510 and the two prefabricated steel column modules 200 at its ends enclose a wall cavity 515. This wall cavity 515 is used to accommodate concrete poured into the prefabricated shear wall 500 at the construction site, allowing the shear wall body 510 and prefabricated steel column modules 200 to form a shear wall. Once the concrete is poured into the wall cavity 515 and solidifies, the shear wall is formed.

[0109] As shown in Figure 9, two prefabricated steel column modules 200 are respectively fixedly connected to the longitudinal sides of the shear wall body 510 and are located in the receiving cavity of the shear wall body 510. The longitudinal sides of the shear wall body 510 mentioned above refer to the left and right sides of the shear wall body 510 when installed / in use. The geometric shape of the prefabricated shear wall 500 is defined by the shear wall body 510.

[0110] Furthermore, the shear wall body 510 may include an inner membrane shell 5102 and an outer membrane shell 5104 that are arranged relative to and in parallel. The inner membrane shell 5102, the outer membrane shell 5104 and the two prefabricated steel column modules 200 enclose a wall cavity 515. That is, the wall cavity 515 is formed by the inner membrane shell 5102, the outer membrane shell 5104 and the two prefabricated steel column modules 200 from four directions: front, back, left and right.

[0111] Continuing with FIG9 , in the embodiment of the present application, two prefabricated steel column modules 200 are fixedly connected to both sides of the shear wall body 510 along the length direction and are located in the accommodating cavity. The surface of the prefabricated steel column module 200 near the inner membrane shell 5102 is fixedly connected to the inner membrane shell 5102, and the surface of the prefabricated steel column module 200 near the outer membrane shell 5104 is fixedly connected to the outer membrane shell 5104. For example, the fixed connection method may include welding, bolt connection, or self-tapping screw connection. The embodiment of the present invention does not specifically limit the above-mentioned fixed connection method, and it can be determined according to actual needs.

[0112] Furthermore, the prefabricated shear wall 500 may also include a shear wall steel frame 530 .

[0113] Specifically, the shear wall steel frame 530 is fixedly connected in the wall cavity 515 , and the two ends of the shear wall steel frame 530 along the transverse direction are respectively fixedly connected to the two prefabricated steel column modules 200 .

[0114] Optionally, one side of the shear wall steel frame 530 along the thickness direction is fixedly connected to the inner membrane shell 5102 via a first connector, and the other side of the shear wall steel frame 530 along the thickness direction is fixedly connected to the outer membrane shell 5104 via a second connector. The shear wall steel frame 530 can be connected to the inner membrane shell 5102 and the outer membrane shell 5104 via the first connector and the second connector, respectively, so that the shear wall body 510 forms a "sandwich" structure. That is, one side of the shear wall steel frame 530 is connected to the inner membrane shell 5102 via the first connector, and the other side is connected to the outer membrane shell 5104 via the second connector, forming a monolithic structure with a non-removable formwork.

[0115] Optionally, the first connecting member and the second connecting member may include self-tapping screws, angle steels, channel steels or flat steel plates.

[0116] The length direction of the shear wall steel frame 530 is the lateral extension direction of the shear wall body 510. The prefabricated steel column modules 200 are vertically fixedly connected at both ends of the shear wall steel frame 530 extending along the length direction. The two ends of the shear wall steel frame 530 in the length direction can be fixedly connected to the surface of the prefabricated steel column modules 200 by welding.

[0117] Please refer to FIG10 , which is a schematic structural diagram of a second structure of a prefabricated shear wall 500 .

[0118] The prefabricated shear wall of this structure has the same basic structure as the prefabricated shear wall of the above-mentioned structure, with the difference that: the two prefabricated steel column modules 200 are fixedly connected to both sides of the shear wall body 510 along the length direction, but the prefabricated steel column module 200 is not located in the accommodating cavity of the shear wall body 510, that is, the prefabricated steel column module 200 is fixedly connected to the end of the shear wall body 510 along the length direction.

[0119] As shown in Figure 10, the shear wall body 510 includes an inner membrane shell 5102 and an outer membrane shell 5104. Two prefabricated steel column modules 200 are fixedly connected to the two ends of the shear wall body 510. Through the inner membrane shell 5102, the outer membrane shell 5104, and the two prefabricated steel column modules 200 on the left and right sides, a wall cavity 515 is enclosed from the front, back, left and right directions. The shear wall steel frame 530 is fixedly connected in the wall cavity 515, and the shear wall steel frame 530 is fixedly connected to the two prefabricated steel column modules 200 at both ends along the horizontal direction.

[0120] In summary, for the two prefabricated shear walls 500 of the above two structures, when the shear wall formed after the concrete is poured into the prefabricated shear wall 500 is the exterior wall of the building, the inner membrane shell 5102 of the shear wall body 510 is located on the side of the shear wall facing indoors, and the outer membrane shell 5104 of the shear wall body 510 is located on the side of the shear wall facing outdoors. The inner membrane shell 5102 and the outer membrane shell 5104 are arranged opposite and parallel to each other, and the wall cavity 515 is formed by the inner membrane shell 5102, the outer membrane shell 5104, and the prefabricated steel column modules 200 on both sides. In other words, at the construction site, the concrete poured into the prefabricated shear wall 500 will be poured between the inner membrane shell 5102, the outer membrane shell 5104, and the two prefabricated steel column modules 200 of the shear wall body 510.

[0121] Because the inner membrane shell 5102 and the outer membrane shell 5104 included in the shear wall body 510 can be used as wall side panels in the module production and hoisting stages and as templates in the construction stage, the prefabricated room module provided by the embodiment of the present invention can not only improve the module rigidity in the production and transportation stages, but also avoid the on-site shear wall reinforcement binding and template support work, saving construction steps and construction personnel.

[0122] The present application also provides a modular building, including the above-mentioned steel column assembly, prefabricated steel column module or assembled steel structure. The modular building has the beneficial effects of the above-mentioned steel column module, which will not be described in detail here.

[0123] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0124] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A steel column assembly, characterized in that: include: A first steel column, wherein the first steel column is a hollow columnar structure and includes a plurality of beams extending along a preset direction; A second steel column, wherein the second steel column is a hollow columnar structure, and a side wall of the second steel column is provided with a welding groove extending along the preset direction; The first steel column is embedded in the second steel column, and the welding groove corresponds to at least a portion of the crossbeam, and the first steel column and the second steel column are welded and fixed at the welding groove.

2. The steel column assembly according to claim 1, characterized in that: The first steel column also includes a vertical beam, which extends axially. The cross beam is connected between two adjacent vertical beams, and the vertical beam and the cross beam enclose the hollow columnar structure, wherein the axial direction has an angle with the preset direction.

3. The steel column assembly according to claim 2, characterized in that: A plurality of the transverse beams are arranged between any two adjacent vertical beams, and the plurality of transverse beams between any two adjacent vertical beams are sequentially spaced and distributed along the axial direction.

4. The steel column assembly according to claim 3, characterized in that: The multiple cross beams arranged between any two adjacent vertical beams are evenly spaced and distributed, and the spacing between any two adjacent cross beams is greater than or equal to the width of the cross beams.

5. The steel column assembly according to claim 2, characterized in that: There are multiple welding grooves, and all of the multiple welding grooves extend along the preset direction.

6. The steel column assembly according to claim 5, characterized in that: Each side wall of the second steel column is provided with a plurality of welding grooves, the plurality of welding grooves on the same side wall are provided in sequence and spaced apart along the axial direction, and the plurality of welding grooves all correspond to the cross beam of the first steel column.

7. The steel column assembly according to claim 1, characterized in that: The cross-sectional shape of the first steel column is the same as the cross-sectional shape of the second steel column, and both are rectangular.

8. The steel column assembly according to claim 7, characterized in that: The maximum length dimension of the cross section of the first steel column is smaller than the minimum length dimension of the cross section of the second steel column, and the maximum width dimension of the cross section of the first steel column is smaller than the minimum width dimension of the cross section of the second steel column.

9. The steel column assembly according to claim 7, characterized in that: The distance between the outer side wall of the first steel column and the inner side wall of the second steel column is greater than or equal to 1 mm and less than or equal to 5 cm.

10. The steel column assembly according to claim 1, characterized in that The end of the first steel column is fixed by welding to the end of the second steel column.

11. The steel column assembly according to claim 10, characterized in that The outer side wall of the end of the first steel column is chamfered, and / or the inner side wall of the end of the second steel column is chamfered.

12. The steel column assembly according to claim 1, characterized in that The first steel column is a rectangular steel plate, which is provided with a plurality of through slots extending along the preset direction so that the crossbeam is formed between two adjacent through slots. The rectangular steel plate is bent multiple times in sequence along the preset direction, and is welded end to end after bending to form a hollow columnar structure.

13. The steel column assembly according to any one of claims 1 to 12, characterized in that: The crossbeam is a bent structure, a wavy structure, an arc structure or a long straight structure; Correspondingly, the welding groove is a bent structure, a wavy structure, an arc structure or a long straight structure.

14. A prefabricated steel column module, characterized in that: It comprises a steel column, an inner core column and a steel column assembly as claimed in any one of claims 1 to 13; The steel column includes a relative bottom end and a top end, the steel column assembly is fixedly connected to the bottom end of the steel column, the inner core column is fixedly connected to the top end of the steel column, and the inner core column protrudes from the top of the steel column, the maximum length dimension of the cross-section of the inner core column is smaller than the minimum length dimension of the cross-section of the first steel column, and the maximum width dimension of the cross-section of the inner core column is smaller than the minimum width dimension of the cross-section of the first steel column.

15. The prefabricated steel column module according to claim 14, characterized in that: The outer side wall of the inner core column is provided with a convex ridge extending along the preset direction.

16. The prefabricated steel column module according to claim 14, characterized in that: The steel column assembly is welded and fixed to the bottom end of the steel column body, and the welding positions are flush.

17. An assembled steel structure, characterized in that: It comprises at least two prefabricated steel column modules as described in any one of claims 14 to 16, wherein the at least two prefabricated steel column modules comprise a lower steel column module and an upper steel column module, the steel column assembly of the upper steel column module is sleeved on the inner core column of the lower steel column module, and the steel column assembly of the upper steel column module is abutted against the top end of the steel column body of the lower steel column module.

18. The assembled steel structure according to claim 17, characterized in that: The outer wall of the inner core column is provided with a convex ridge extending along the preset direction, and the outermost dimension of the inner core column provided with the convex ridge is smaller than the innermost dimension of the steel column assembly.

19. A prefabricated shear wall, characterized in that: include: A shear wall body, wherein the shear wall body has a receiving cavity; and Two prefabricated steel column modules as described in any one of claims 14 to 16, wherein the two prefabricated steel column modules are fixedly connected to both sides of the shear wall body along the length direction, and the shear wall body and the two prefabricated steel column modules enclose a wall cavity for cast-in-place concrete.

20. The prefabricated shear wall according to claim 19, characterized in that: The shear wall body comprises an inner membrane shell and an outer membrane shell which are arranged relatively parallel to each other. The inner membrane shell, the outer membrane shell and the two prefabricated steel column modules enclose the wall cavity.

21. The prefabricated shear wall according to claim 19, characterized in that: It also includes a shear wall steel frame, which is fixedly connected in the wall cavity, and two ends of the shear wall steel frame are respectively fixedly connected to the two prefabricated steel column modules.

22. The prefabricated shear wall according to claim 19, characterized in that: The two prefabricated steel column modules are fixedly connected to two sides of the shear wall body along the length direction and are located in the accommodating cavity.

23. A modular building, characterized in that: It comprises a steel column assembly as described in any one of claims 1 to 13, a prefabricated steel column module as described in any one of claims 14 to 16, an assembled steel structure as described in claim 17 or 18, or a prefabricated shear wall as described in any one of claims 19 to 22.

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