Prefabricated steel column module, fabricated steel structure, prefabricated shear wall and modular building

Abstract

The embodiment of the application provides a prefabricated steel column module, a fabricated steel structure, a prefabricated shear wall and a modular building. The prefabricated steel column module comprises a steel column body, a first steel column assembly and a second steel column assembly. A first insertion slot is formed in the first end of the steel column body in the axial direction, the outer side wall of the first steel column assembly is provided with a first protruding rib, the other end is provided with an insertion plate in the axial direction, the insertion plate is inserted into the first insertion slot, the other end of the first steel column assembly is inserted into the steel column body and is fixedly connected with the steel column body through the insertion plate. The inner side wall of the second steel column assembly is provided with a second protruding rib, and the second steel column assembly is fixedly connected to the second end of the steel column body. By using the scheme in the application, the tensile resistance between the connection positions of the upper and lower two prefabricated steel column modules is enhanced through the first protruding rib and the second protruding rib, the first steel column assembly and the second steel column assembly can be formed respectively, the welding difficulty can be reduced by operating from both ends, the welding quality and the welding efficiency can be improved, and the automatic production is facilitated.

Description

Technical Field

[0001] This application relates to the field of modular prefabricated building technology, specifically to a prefabricated steel column module, prefabricated steel structure, prefabricated shear wall, and modular building. Background Technology

[0002] Modular prefabricated buildings refer to buildings that are prefabricated in a factory and assembled on the construction site, using steel structures to connect them into a whole. They are more stable than traditional building structures and greatly utilize the ductility and load-bearing capacity of steel structures.

[0003] In existing technologies, the upper and lower square tube columns of modular prefabricated buildings are connected by a plug-in method. The ends of the square tube columns are designed as plug-in structures. After the upper and lower square tube columns are connected by the plug-in structure, concrete is poured into the square tube columns to achieve a stable connection. In order to enhance the tensile strength of the connection between the upper and lower square tube columns after the concrete is poured, tensile strength resisting components are usually added to the plug-in structure.

[0004] The existing method involves installing a core column at the top of the lower square tube column, accumulating solder on the outside of the core column to form a strip-shaped protrusion, and accumulating solder on the inside of the bottom of the upper square tube column to form a strip-shaped protrusion. However, due to the complex structure at the top of the square tube column, the limited space at the bottom, and the fact that welding can only be performed from the end of the square tube column, welding is inconvenient, resulting in poor welding quality, low efficiency, and hindering automated production. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a prefabricated steel column module, prefabricated steel structure, prefabricated shear wall, and modular building to improve the above-mentioned issues.

[0006] In a first aspect, embodiments of the present invention provide a prefabricated steel column module, comprising:

[0007] The steel column body includes a first end and a second end opposite to each other, and the first end has a first insertion groove along the axial direction.

[0008] A first steel column assembly has a first protruding ridge extending in a first preset direction protruding from one end of its outer side wall, and an axially arranged insertion plate at the other end. The insertion plate is inserted into a first insertion slot, and the other end of the first steel column assembly is inserted into the steel column body and fixedly connected to the steel column body via the insertion plate.

[0009] The second steel column assembly has a second protruding ridge extending along a second preset direction on its inner sidewall, and the second steel column assembly is fixedly connected to the second end of the steel column body.

[0010] Furthermore, the first steel column assembly includes a first steel column, the first protruding ridge is provided on the outer side wall of the first steel column, and a second insertion groove is opened at one end of the first steel column along the axial direction, and the insertion plate is inserted into the second insertion groove.

[0011] Furthermore, the first insertion slot and the second insertion slot are coplanar, the middle position of the insertion plate mates with the second insertion slot, and the two sides of the insertion plate mate with the first insertion slot.

[0012] Furthermore, the first insertion slot is coplanar with the central axis of the steel column body, and the second insertion slot is coplanar with the central axis of the first steel column.

[0013] Furthermore, the first steel column assembly also includes a plurality of first reinforcing bars, which are spaced apart on the outer side wall of the first steel column and all extend along the first preset direction to form the first protruding ridge.

[0014] Furthermore, the first steel column assembly also includes a guide member, which is at least partially fixedly connected to the outer wall of the first steel column, and the guide member is adapted to fit the inner wall of the second steel column assembly of another prefabricated steel column module that is sleeved with the prefabricated steel column module.

[0015] Furthermore, the guide includes a lug, which is fixedly connected to the outer wall at the diagonal position of the first steel column.

[0016] Furthermore, the side of the support lug furthest from the first steel column has an arc-shaped structure.

[0017] Furthermore, the guide includes a guide cone and a guide post that are fixedly connected. The guide post is fixedly connected to the outer wall of the first steel column at a diagonal position. The guide cone is connected to the end of the guide post and is located at the end of the first steel column away from the second insertion slot.

[0018] Furthermore, there are multiple guide posts, each fixed to the outer side wall of the first steel column at a diagonal position; the guide cone includes a conical plate connected to each guide post, and the sides of the conical plates away from the guide posts intersect at the middle position.

[0019] Furthermore, the second steel column assembly includes a second steel column and a connecting assembly;

[0020] The second steel column has multiple welding grooves on its sidewall. One side of the connecting component has a concave-convex shape to form multiple second convex ridges extending along the second preset direction. The other side of the connecting component is disposed on the inner sidewall of the second steel column. The connecting component and the second steel column are welded and fixed at the welding groove position.

[0021] Furthermore, the connecting assembly includes a steel plate and a second reinforcing bar, and there are multiple second reinforcing bars. The steel plate includes a first side and a second side facing away from each other. The multiple second reinforcing bars are sequentially and spaced apart and welded to the first side of the steel plate. The multiple second reinforcing bars extend along the second preset direction to form the second protruding ridge. The second side of the steel plate is disposed on the inner wall of the second steel column.

[0022] Furthermore, the connecting assembly includes a steel plate, which includes a first side and a second side facing away from each other. The first side is provided with a plurality of second protruding ridges extending along a second preset direction, and the second side of the steel plate is disposed on the inner sidewall of the second steel column.

[0023] Furthermore, a plurality of grooves are sequentially spaced on the first side of the steel plate, the plurality of grooves extending along the second preset direction, and a second convex ridge is formed between any two adjacent grooves.

[0024] Furthermore, the second steel column assembly includes a second steel column and a third steel column. The sidewall of the second steel column has multiple welding grooves. The third steel column is a hollow column structure and includes multiple crossbeams extending along the second preset direction.

[0025] The third steel column is embedded in the second steel column, and the welding groove corresponds to at least a portion of the crossbeam. The second steel column and the third steel column are welded and fixed at the position of the welding groove.

[0026] Furthermore, the third steel column also includes a vertical beam that extends axially, and a horizontal beam that connects two adjacent vertical beams. The vertical beam and the horizontal beam together form the hollow column structure, wherein the axial direction has an angle with the second preset direction.

[0027] Furthermore, the third steel column is a rectangular steel plate, which has multiple through slots extending along the second preset direction, so that a crossbeam is formed between two adjacent through slots. The rectangular steel plate is bent multiple times along the second preset direction, and the ends are welded together after bending to form a hollow column structure.

[0028] Secondly, embodiments of the present invention also provide a prefabricated steel structure, including at least two prefabricated steel column modules, wherein the at least two prefabricated steel column modules include a lower steel column module and an upper steel column module, wherein a second steel column component of the upper steel column module is sleeved on the first steel column component of the lower steel column module, and the second steel column component of the upper steel column module abuts against the top end of the steel column body of the lower steel column module.

[0029] Thirdly, embodiments of the present invention also provide a precast shear wall, comprising:

[0030] Shear wall body, the shear wall body having a receiving cavity; and

[0031] Two precast steel column modules are fixedly connected to both sides of the shear wall body along its length, and the shear wall body and the two precast steel column modules enclose a wall cavity for cast-in-place concrete.

[0032] Furthermore, the shear wall body includes an inner membrane shell and an outer membrane shell arranged in parallel with each other, and the inner membrane shell, the outer membrane shell, and the two prefabricated steel column modules enclose the wall cavity.

[0033] Furthermore, it also includes a shear wall steel frame, which is fixedly connected in the cavity of the wall, and both ends of the shear wall steel frame are fixedly connected to the two precast steel column modules respectively.

[0034] Furthermore, the two prefabricated steel column modules are fixedly connected to both sides of the shear wall body along the length direction and located in the receiving cavity.

[0035] Fourthly, embodiments of the present invention also provide a modular building, including the aforementioned prefabricated steel column modules, prefabricated steel structures, or prefabricated shear walls.

[0036] This application has the following beneficial effects:

[0037] In the solution provided by the first aspect of the present invention, the prefabricated steel column module is designed as a structure assembled and welded from a steel column body, a first steel column assembly, and a second steel column assembly. A first insertion groove is axially formed at the first end of the steel column body. A first protruding ridge is formed on the outer wall of one end of the first steel column assembly, and an insertion plate is provided at the other end. When the first end of the steel column body is assembled with the first steel column assembly, the first steel column assembly is fixedly connected to the steel column body via the insertion plate. A second protruding ridge is formed on the inner wall of the second steel column assembly, and the second steel column assembly is fixedly connected to the second end of the steel column body. This prefabricated steel column module designs a complete steel column as a structure in which three structural components (steel column body, first steel column assembly, and second steel column assembly) are fixedly connected. The first protruding ridge of the first steel column assembly and the second protruding ridge of the second steel column assembly enhance the pull-out resistance between the connection points of the upper and lower layers of prefabricated steel column modules.

[0038] Furthermore, the first and second steel column components can be formed separately, and both can be operated from both ends. Especially for the second steel column component with its limited internal space, welding from both ends not only reduces welding difficulty but also improves welding quality and efficiency. By first forming the first and second steel column components separately, then fixing the formed first steel column component to the first end of the steel column body, and finally fixing the formed second steel column component to the second end of the steel column body, a complete module is formed. The prefabricated steel column module provided in this application has an ingenious and reasonable design, a simple structure, and is convenient for assembly and welding operations. It can improve welding speed and quality and is also conducive to automated production.

[0039] In the solution provided by the second aspect of the present invention, the prefabricated steel structure has the beneficial effects of the prefabricated steel column module.

[0040] In the solution provided by the third aspect of the present invention, the prefabricated shear wall has the beneficial effects of the prefabricated steel column module.

[0041] In the solution provided by the fourth aspect of the present invention, the modular building has the beneficial effects of the prefabricated steel column modules, prefabricated steel structures, or prefabricated shear walls. Attached Figure Description

[0042] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0043] Figure 1 This diagram illustrates the structure of a prefabricated steel column module provided in an embodiment of the present invention.

[0044] Figure 2 An exploded view of the prefabricated steel column module provided in an embodiment of the present invention is shown;

[0045] Figure 3 This diagram illustrates the structure of the steel column body in the prefabricated steel column module provided in an embodiment of the present invention.

[0046] Figure 4 This diagram illustrates the structure of a first type of prefabricated steel column assembly in an embodiment of the present invention.

[0047] Figure 5 This invention provides a schematic diagram of the second structure of the first steel column assembly in the prefabricated steel column module.

[0048] Figure 6 This invention provides a schematic diagram of the third structure of the first steel column component in the prefabricated steel column module.

[0049] Figure 7 This invention provides a schematic diagram of the first structure of the second steel column assembly in the prefabricated steel column module.

[0050] Figure 8 This diagram illustrates a first structure of the connecting component in the second steel column assembly provided in an embodiment of the present invention.

[0051] Figure 9 This diagram illustrates a second structure of the connecting component in the second steel column assembly provided in an embodiment of the present invention.

[0052] Figure 10 This invention provides a schematic diagram of the second structure of the second steel column assembly in the prefabricated steel column module.

[0053] Figure 11 An exploded view of the second structure of the second steel column assembly provided in an embodiment of the present invention is shown;

[0054] Figure 12 This diagram illustrates a first structure of the third steel column in the second steel column assembly provided in an embodiment of the present invention.

[0055] Figure 13 This invention provides a schematic diagram of a second structure for the third steel column in a second steel column assembly.

[0056] Figure 14 This diagram illustrates a prefabricated steel structure according to an embodiment of the present invention.

[0057] Figure 15 This illustration shows a cross-sectional view of the connection between the upper and lower steel column modules in a prefabricated steel structure according to an embodiment of the present invention.

[0058] Figure 16 This diagram illustrates the structure of the first type of prefabricated shear wall provided in an embodiment of the present invention.

[0059] Figure 17 A schematic diagram of the second type of prefabricated shear wall structure provided in an embodiment of the present invention is shown.

[0060] Icons: 100 - Precast steel column module; 101 - First preset direction; 103 - Second preset direction; 110 - Steel column body; 113 - First insertion slot; 130 - First steel column assembly; 133 - First steel column; 1331 - Second insertion slot; 135 - First protruding ridge; 1351 - First reinforcing bar; 137 - Insertion plate; 1381 - Support lug; 1383 - Guide cone; 1385 - Guide column; 160 - Second steel column assembly; 161 - Second steel column; 1611 - Welding groove; 163-Second protruding ridge; 1631-Steel plate; 1633-Second reinforcing bar; 1635-Groove; 165-Third steel column; 1651-Horizontal beam; 1653-Vertical beam; 1655-Through groove; 200-Prefabricated steel structure; 210-Lower steel column module; 230-Upper steel column module; 300-Precast shear wall; 310-Shear wall body; 315-Wall cavity; 3102-Inner membrane shell; 3104-Outer membrane shell; 330-Shear wall steel frame. Detailed Implementation

[0061] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0062] In the description of this invention, it should be understood that the terms "vertical," "horizontal," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "center," "longitudinal," "transverse," "length," "width," and "thickness," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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 limitations on this invention.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can 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 according to the specific circumstances.

[0065] This application provides a prefabricated steel column module 100. Please refer to... Figure 1 The diagram shown is a structural schematic of the precast steel column module 100. Please refer to it. Figure 2 The diagram shown is an exploded view of the prefabricated steel column module 100.

[0066] Specifically, the prefabricated steel column module 100 may include a steel column body 110, a first steel column assembly 130, and a second steel column assembly 160. The steel column body 110 includes a first end and a second end opposite to each other, and the first steel column assembly 130 and the second steel column assembly 160 are respectively fixedly connected to the two ends of the steel column body 110.

[0067] Among them, the first end of the steel column body 110 is provided with a first insertion groove 113 along the axial direction (e.g. Figure 2 As shown), the outer side wall of the first steel column assembly 130 has a first protruding ridge 135 extending along a first preset direction 101, and the other end has an axially arranged insertion plate 137. During connection, the insertion plate 137 of the first steel column assembly 130 is inserted into the first insertion groove 113 at the first end of the steel column body 110, and the first steel column assembly 130 is inserted into the steel column body 110, and is fixedly connected to the steel column body 110 through the insertion plate 137. The inner side wall of the second steel column assembly 160 has a second protruding ridge 163 extending along a second preset direction 103 (as shown). Figure 2 As shown, the second steel column assembly 160 is fixedly connected to the second end of the steel column body 110.

[0068] It is understood that the first preset direction 101 and the second preset direction 103 may be the same or different. The first preset direction 101 forms an angle with the axial direction of the steel column body 110, and the second preset direction 103 also forms an angle with the axial direction of the steel column body 110. In order to improve the pull-out resistance of the connection position after the upper and lower precast steel column modules are connected, the second protruding ridge of the inner sidewall of the second steel column component in the upper precast steel column module can be extended horizontally, that is, extended in a direction that forms an angle with the axial direction of the steel column body; the first protruding ridge of the outer sidewall of the first steel column component in the lower precast steel column module can also be extended horizontally, that is, extended in a direction that forms an angle with the axial direction of the steel column body.

[0069] The prefabricated steel column module 100 is designed as a complete steel column consisting of three structural components: a steel column body 110, a first steel column assembly 130, and a second steel column assembly 160, which are fixedly connected. Specifically, a first protruding ridge 135 is first provided on the outer side wall of the first steel column assembly 130. After the first steel column assembly 130 is formed, it is then fixedly connected to the first end of the steel column body 110 via a connector plate 137. A second protruding ridge 163 is provided on the inner side wall of the second steel column assembly 160. After the second steel column assembly 160 is formed, it is then fixedly connected to the second end of the steel column body 110. The prefabricated steel column module 100 enhances the pull-out resistance between the connection points of the upper and lower layers of prefabricated steel column modules 100 through the first protruding ridge 135 of the first steel column assembly 130 and the second protruding ridge 163 of the second steel column assembly 160. The first steel column assembly 130 and the second steel column assembly 160 can be formed separately, and both can be operated from both ends. Especially for the second steel column assembly 160 with its limited internal space, welding from both ends not only reduces the difficulty of welding but also improves welding quality and efficiency. By first forming the first steel column assembly 130 and the second steel column assembly 160 separately, fixing the formed first steel column assembly 130 to the first end of the steel column body 110, and fixing the formed second steel column assembly 160 to the second end of the steel column body 110, a complete module is finally formed, which is conducive to realizing automated production.

[0070] Optionally, the cross-sectional shape of the steel column body 110 can be rectangular, and correspondingly, the cross-sectional shapes of the first steel column assembly 130 and the second steel column assembly 160 are also rectangular. In other optional embodiments, the cross-sectional shapes of the steel column body 110, the first steel column assembly 130, and the second steel column assembly 160 can also be other structures, as long as the cross-sectional shape of the second steel column assembly 160 is the same as that of the steel column body 110, and the first steel column assembly 130 can be embedded in the steel column body 110. This application does not limit this, and the following description uses a rectangular cross-section.

[0071] The specific structure of the precast steel column module 100 is described in detail below. Please refer to... Figure 3 The figure shown is a structural schematic diagram of the steel column body 110 in the prefabricated steel column module 100.

[0072] The steel column body 110 is a long hollow tubular structure, including a first end and a second end. The first end is used to cooperate with and fix the first steel column assembly 130, and the second end is used to cooperate with and fix the second steel column assembly 160.

[0073] Since the cross-sectional dimension of the first steel column assembly 130 is smaller than that of the steel column body 110, the first steel column assembly 130 is inserted into the first end of the steel column body 110. In order to fix the first steel column assembly 130 and the steel column body 110, a first insertion groove 113 can be opened at the first end of the steel column body 110, and an insertion plate 137 is provided at the end of the first steel column assembly 130. Both the insertion plate 137 and the first insertion groove 113 are arranged along the axial direction of the steel column body 110, and the first steel column assembly 130 is inserted into the first insertion groove 113 of the steel column body 110 through the insertion plate 137.

[0074] Optionally, the dimensions of the first insertion slot 113 at the first end of the steel column body 110 are adapted to the dimensions of the insertion plate 137, that is: the thickness of the insertion plate 137 is slightly smaller than the width of the first insertion slot 113, the length of the insertion plate 137 is slightly larger than the length of the first insertion slot 113, and the width of the insertion plate 137 is equal to or greater than the depth of the first insertion slot 113, so that the insertion plate 137 can be smoothly inserted into the first insertion slot 113.

[0075] It is understood that in other optional embodiments, the width of the plug plate 137 may be smaller than the depth of the first plug slot 113. This application does not limit this dimension, as long as the first steel column assembly 130 is plugged and fixed to the steel column body 110 through the plug plate 137.

[0076] Please refer to Figure 4 The diagram shown is a structural schematic of the first steel column component 130 in the prefabricated steel column module 100, representing the first type of structure.

[0077] Specifically, the first steel column assembly 130 may include a first steel column 133, a first protruding rib 135 protruding from the outer side wall of the first steel column 133, and a second insertion groove 1331 axially formed at one end of the first steel column 133, with the insertion plate 137 inserted and fixed in the second insertion groove 1331.

[0078] Optionally, the first steel column 133 can be a hollow tubular structure, and a second insertion groove 1331 is formed axially on the side wall of the first steel column 133. The insertion plate 137 can be a rectangular steel plate, the length of which should be greater than the length of the second insertion groove 1331 of the first steel column 133, the thickness of which is slightly smaller than the width of the second insertion groove 1331 of the first steel column 133, and the width of which can be equal to, greater than or less than the depth of the second insertion groove 1331 of the first steel column 133.

[0079] Furthermore, after the first steel column 133 is fixed to the steel column body 110 by inserting the connector plate 137, the first insert groove 113 of the steel column body 110 and the second insert groove 1331 of the first steel column 133 are coplanar. Since the first steel column assembly 130 is inserted into the steel column body 110, the middle position of the connector plate 137 mates with the second insert groove 1331 of the first steel column 133, and the two sides of the connector plate 137 mate with the first insert groove 113 of the steel column body 110 (e.g., ...). Figure 1 ).

[0080] Optionally, the first insertion slot 113 of the steel column body 110 is coplanar with the central axis of the steel column body 110, and the second insertion slot 1331 of the first steel column 133 is coplanar with the central axis of the first steel column 133. That is, the opening direction of the first insertion slot 113 can be perpendicular to the side wall of the steel column body 110 and pass through the central axis of the steel column body 110, or it can be located at a diagonal position of the steel column body 110, or it can have an angle with the side wall of the steel column body 110 and pass through the central axis of the steel column body 110.

[0081] Furthermore, the first steel column assembly 130 may also include a plurality of first reinforcing bars 1351, which are spaced apart on the outer side wall of the first steel column 133 and extend along the first preset direction 101 to form a first protruding ridge.

[0082] The first preset direction 101 refers to a direction that forms an angle with the axis of the first steel column 133. For example, the first reinforcing bar 1351 extends along a direction perpendicular to the central axis of the first steel column 133. Multiple first reinforcing bars 1351 can be evenly or unevenly distributed. First reinforcing bars 1351 can be provided on each outer side wall of the first steel column 133, or they can be provided on some of the outer side walls. The first reinforcing bars 1351 can be fixed to the outer side wall of the first steel column 133 by welding.

[0083] When multiple precast steel column modules are assembled by nesting them together, to facilitate smooth nesting between the upper and lower precast steel column modules, a guide member can optionally be installed on the top of the lower precast steel column module. This guide member will guide the module and facilitate smooth nesting.

[0084] Specifically, the first steel column assembly 130 may further include a guide member, which is at least partially fixed to the outer side wall of the first steel column 133, and the guide member is adapted to fit the inner wall of the second steel column assembly of another prefabricated steel column module.

[0085] Please refer to Figure 5 The diagram shown is a schematic diagram of the second structure of the first steel column component 130 in the prefabricated steel column module 100.

[0086] The guide component may include a lug 1381, which is fixedly connected to the outer wall of the first steel column 133 at a diagonal position. The number of lugs 1381 may be at least two, and two of the lugs 1381 may be fixedly connected to the outer wall of the first steel column 133 at a diagonal position respectively. The outermost lug 1381 is used to cooperate with the inner wall of the upper prefabricated steel column module.

[0087] To further enhance the guiding function, the side of the lug 1381 furthest from the first steel column 133 may optionally be designed as an arc-shaped structure.

[0088] By providing a lug 1381 with an arc-shaped outer edge protruding from the outer wall at the diagonal position of the first steel column 133, it is convenient for the upper precast steel column module to be smoothly connected to the lower precast steel column module.

[0089] Please refer to Figure 6 The diagram shown is a schematic diagram of the third structure of the first steel column component 130 in the prefabricated steel column module 100.

[0090] Specifically, the guide may include a guide cone 1383 and a guide post 1385 that are fixedly connected. The guide post 1385 is a slender rod-shaped structure. The guide post 1385 is fixedly connected to the outer wall of the first steel post 133 at the diagonal position. The guide cone 1383 is connected to the end of the guide post 1385 and is located at the end of the first steel post 133 away from the second insertion slot 1331.

[0091] Optionally, there can be multiple guide posts 1385, each fixed to the outer wall of the first steel column 133 at a diagonal position (when the first steel column 133 is a quadrangular prism, there are four guide posts 1385, each fixedly connected to the outer wall of one of the four corners of the quadrangular prism). The guide cone 1383 may include a conical piece connected to each guide post 1385, with the conical pieces intersecting at the middle position on the side away from the guide post 1385, so that the guide cone 1383 has a structure that is low on the outside and high in the middle.

[0092] It is understood that the guide component may also include other structures, which are not specifically limited in this application and are determined according to actual needs.

[0093] Please refer to Figure 7 The diagram shown is a schematic diagram of the first structure of the second steel column component 160 in the prefabricated steel column module 100.

[0094] The second steel column assembly 160 may include a second steel column 161 and a connecting assembly, the connecting assembly being disposed on the inner sidewall of the second steel column 161. The sidewall of the second steel column 161 has multiple welding grooves 1611, and one side of the connecting assembly has a concave-convex shape to form multiple second protruding ridges 163 extending along a second preset direction 103. During installation, the other side of the connecting assembly is disposed on the inner sidewall of the second steel column 161, and the connecting assembly and the second steel column 161 are welded and fixed from the outside of the second steel column 161 at the welding grooves 1611.

[0095] Please refer to Figure 8 The diagram shown is a structural schematic of the first type of connecting component.

[0096] Specifically, the connecting assembly may include a steel plate 1631 and a second reinforcing bar 1633, the second reinforcing bar 1633 being welded to the inner wall of the second steel column 161 via the steel plate 1631.

[0097] Optionally, there are multiple second reinforcing bars 1633. The steel plate 1631 includes a first side and a second side facing away from each other. Multiple second reinforcing bars 1633 are sequentially and spaced apart and welded to the first side of the steel plate 1631. The multiple second reinforcing bars 1633 extend along a second preset direction 103 to form a second protruding ridge. The multiple second reinforcing bars 1633 are welded to the steel plate 1631 to form a whole. Then, the second side of the steel plate 1631 is attached to the inner wall of the second steel column 161. Finally, welding is performed from the outer wall of the second steel column 161.

[0098] Optionally, the steel plate 1631 can be a thin-walled steel plate, the shape of which matches the shape of the inner wall of the second steel column 161, for example, a rectangular structure. Multiple second reinforcing bars 1633 are distributed sequentially at intervals, causing the first side of the steel plate 1631 to form a concave-convex shape.

[0099] Optionally, a plurality of second reinforcing bars 1633 are uniformly welded to the first side of the steel plate 1631, and each second reinforcing bar 1633 extends along the second preset direction 103, and the plurality of second reinforcing bars 1633 are distributed sequentially along a direction perpendicular to the second preset direction 103.

[0100] Please refer to Figure 9 The diagram shown is a schematic diagram of the second structure of the connecting component.

[0101] Specifically, the connecting assembly may include a steel plate 1631, which includes a first side and a second side facing away from each other. The first side is provided with a plurality of second protruding ridges 163 extending along a second preset direction 103. During installation, the second side of the steel plate 1631 is disposed on the inner wall of the second steel column 161, and the steel plate 1631 is welded to the second steel column 161 from the outside of the second steel column 161 at the welding groove 1611 position.

[0102] Optionally, the second protruding ridge 163 and the steel plate 1631 can be integrally formed. For example, it can be formed by mold casting or extrusion molding, etc., which is not limited in the embodiments of this application.

[0103] In alternative embodiments, multiple grooves may be sequentially spaced on the first side of the steel plate 1631, extending along a second preset direction 103, with a second ridge 163 formed between any two adjacent grooves 1635. For example, this can be achieved through milling. That is, multiple grooves 1635 are milled into a steel plate 1631, such that any two adjacent grooves 1635 are separated by the second ridge 163.

[0104] In this embodiment, to improve the pull-out resistance between the end joints of the upper and lower steel structures, a connecting component can be provided on each inner sidewall of the second steel column 161. That is, the second steel column 161 includes multiple inner sidewalls, and a connecting component is provided on each inner sidewall to enhance the pull-out resistance from various sides.

[0105] In this embodiment, the second reinforcing bar 1633 is welded to the steel plate 1631, and a welding groove 1611 is opened on the side wall of the second steel column 161. The steel plate 1631 and the second steel column 161 are welded through the welding groove 1611, thereby indirectly welding the second reinforcing bar 1633 to the inner side wall of the second steel column 161 through the steel plate 1631. This method is convenient and easy to weld, which can not only improve the welding speed but also the welding efficiency, and is conducive to further realizing automated production.

[0106] Please refer to Figure 10 The diagram shown is a schematic representation of the second structure of the second steel column assembly 160 in the prefabricated steel column module 100. Please refer to... Figure 11 The diagram shown is an exploded view of the second structure of the second steel column assembly 160.

[0107] Specifically, the second steel column assembly 160 may include a second steel column 161 and a third steel column 165, both of which are hollow columnar structures. The side wall of the second steel column 161 has a welding groove 1611 extending along a second preset direction 103. The third steel column 165 includes multiple crossbeams 1651 extending along the second preset direction 103. During installation, the third steel column 165 is embedded inside the second steel column 161, with the axial direction of the second steel column 161 being the same as that of the third steel column 165. The welding groove 1611 of the second steel column 161 corresponds to at least a portion of the crossbeams 1651 of the third steel column 165, and the crossbeams 1651 are welded to the second steel column 161 from the outside at the welding groove 1611 position, thereby fixing the second steel column 161 and the third steel column 165.

[0108] By employing two hollow columnar structures, a second steel column 161 and a third steel column 165, the third steel column 165 includes multiple crossbeams 1651, and multiple welding grooves 1611 are formed on the sidewall of the second steel column 161. The third steel column 165 is embedded within the second steel column 161, with the crossbeams 1651 of the third steel column 165 corresponding to the welding grooves 1611 of the second steel column 161. The crossbeams 1651 are then welded to the second steel column 161 from the outside at the welding grooves 1611. After welding, the crossbeams 1651 of the third steel column 165 protrude from the inner sidewall of the second steel column 161, forming a concave-convex structure. The second steel column assembly 160 provided in this application embodiment is convenient to assemble and weld, has a simple structure, and is ingeniously designed, greatly improving the convenience of welding. While meeting the tensile strength requirements, it increases welding speed and production efficiency, which is conducive to achieving automated production.

[0109] Please refer to Figure 12 The diagram shown is a schematic diagram of the first type of structure for the third steel column 165.

[0110] Specifically, the third steel column 165 also includes a vertical beam 1653, which is intersected with the horizontal beam 1651 and forms a hollow column structure.

[0111] Vertical beams 1653 extend axially, and there are multiple vertical beams 1653, which are parallel but not located on the same plane. Horizontal beams 1651 connect adjacent vertical beams 1653, forming a plane with the adjacent vertical beams 1653 and the horizontal beam 1651 between them. These multiple planes form a hollow columnar structure. The vertical beams 1653 extend axially, and the horizontal beams 1651 extend along a second predetermined direction 103, with the axial direction forming an angle with the second predetermined direction 103.

[0112] Furthermore, multiple crossbeams 1651 are provided between any two adjacent vertical beams 1653, and the multiple crossbeams 1651 between any two adjacent vertical beams 1653 are distributed sequentially at intervals along the axial direction.

[0113] Optionally, the second preset direction 103 can be perpendicular to the axial direction, i.e. Figure 12 In the structure shown, when in use, all the horizontal beams 1651 extend in the horizontal direction, and all the vertical beams 1653 extend in the vertical direction.

[0114] Multiple welding grooves 1611 are provided on each side wall of the second steel column 161. The welding grooves 1611 on the same side wall are sequentially spaced along the axial direction, and each welding groove 1611 corresponds to the crossbeam 1651 of the third steel column 165. This facilitates welding of the corresponding crossbeam 1651 from the outside of the second steel column 161 at each welding groove 1611 position.

[0115] To further improve the connection stability between the third steel column 165 and the second steel column 161, in addition to welding and fixing at the position of the welding groove 1611, the end of the third steel column 165 can also be welded and fixed to the end of the second steel column 161.

[0116] Please refer to Figure 13 The diagram shown is a schematic diagram of the second structure of the third steel column 165.

[0117] Specifically, the third steel column 165 is a rectangular steel plate with multiple through slots 1655 extending along the second preset direction 103, so that a crossbeam 1651 is formed between two adjacent through slots 1655. The rectangular steel plate is bent multiple times along the second preset direction 103, and the ends are welded after bending to form a hollow column structure.

[0118] A hollow rectangular columnar structure can be formed by bending a rectangular steel plate with multiple through slots, for example, bending it three times. After bending, a right angle is formed between two adjacent faces, and the first face is welded to the fourth face end to end.

[0119] Then, the third steel column 165 is embedded into the second steel column 161, and the welding groove 1611 of the second steel column 161 is offset from the through groove 1655 on the third steel column 165, that is, the welding groove 1611 corresponds to the crossbeam 1651. At the position of the welding groove 1611, the crossbeam 1651 is welded to the second steel column 161 from the outside of the second steel column 161.

[0120] The prefabricated steel column module 100 provided in this application embodiment is designed as an integral steel column consisting of a steel column body 110, a first steel column assembly 130, and a second steel column assembly 160, which are assembled and fixed together. Both the first steel column assembly 130 and the second steel column assembly 160 can be welded from both ends and formed independently. The formed first steel column assembly 130 is inserted and fixed to the first end of the steel column body 110 via a connector plate 137, and then welded at the insertion point. The formed second steel column assembly 160 is welded and fixed to the second end of the steel column body 110. Welding is convenient and assembly is easy.

[0121] The "protruding second ridge 163 on the inner wall of the second steel column assembly 160" can be converted into two methods: First, the structure of the second steel column 161 and the connecting assembly, where the connecting assembly can include a steel plate 1631 and a second reinforcing bar 1633. The second reinforcing bar 1633 is welded to the first side of the steel plate 1631, and the steel plate 1631 is welded to the inner wall of the second steel column 161, i.e., the second reinforcing bar 1633 is fixedly installed on the inner wall of the second steel column 161 by the steel plate 1631. Second, two steel columns (i.e., the second steel column 161 and the third steel column 165) of different sizes are connected. The inner steel column (the third steel column 165) has multiple crossbeams 1651 extending along a second preset direction 103, and the outer steel column (the second steel column 161) has welding grooves 1611 extending along the second preset direction 103. After the two steel columns are connected, the welding groove 1611 of the outer steel column corresponds to the crossbeam 1651 of the inner steel column. The crossbeam 1651 of the inner steel column is welded to the outer steel column through the welding groove 1611, so that the second steel column 161 is fixed to the third steel column 165 with the crossbeam 1651. The crossbeam 1651 with tensile strength is indirectly welded to the inner wall of the second steel column 161.

[0122] The prefabricated steel column module 100 has a simple structure, ingenious design, and is easy to operate. It is easy to connect and weld, which can improve welding speed and production efficiency and facilitate further automated production.

[0123] This application also provides a prefabricated steel structure 200 in its embodiments, please refer to it as well. Figure 14 and Figure 15 , Figure 14 The diagram shown is a structural schematic of the prefabricated steel structure 200. Figure 15 The image shown is a cross-sectional view of the connection between the upper and lower steel column modules.

[0124] The prefabricated steel structure 200 may include at least two of the above-mentioned prefabricated steel column modules 100, wherein the at least two prefabricated steel column modules 100 may include a lower steel column module 210 and an upper steel column module 230.

[0125] After installation, the second steel column assembly 160 of the upper steel column module 230 is fitted onto the first steel column assembly 130 of the lower steel column module 210, and the second steel column assembly 160 of the upper steel column module 230 abuts against the top of the steel column body 110 of the lower steel column module 210.

[0126] For example, the prefabricated steel structure 200 includes two prefabricated steel column modules 100, namely a lower steel column module 210 and an upper steel column module 230. The second steel column assembly 160 of the lower steel column module 210 is located at the bottom, and the first steel column assembly 130 is located at the top. During installation, the second steel column assembly 160 of the upper steel column module 230 is fitted onto the first steel column assembly 130 of the lower steel column module 210, and the second steel column assembly 160 of the upper steel column module 230 abuts against the steel column body 110 of the lower steel column module 210.

[0127] After installation, the first protruding ridge 135 on the outer side wall of the first steel column assembly 130 corresponds to the second protruding ridge 163 on the inner side wall of the second steel column assembly 160, which helps to improve the pull-out resistance after cement is poured.

[0128] The prefabricated steel structure 200 has the same beneficial effects as the prefabricated steel column module 100 mentioned above, which will not be elaborated here.

[0129] This application also provides a precast shear wall 300 in this embodiment; please refer to [link / reference]. Figure 16 The diagram shown is a structural schematic of the first type of precast shear wall 300.

[0130] Specifically, the precast shear wall 300 may include a shear wall body 310 and the aforementioned precast steel column modules 100. The shear wall body 310 has a receiving cavity. There are two precast steel column modules 100, which are fixedly connected to both sides of the shear wall body 310 along the length direction. The shear wall body 310 and the two precast steel column modules 100 enclose a wall cavity 315 for cast-in-place concrete.

[0131] The shear wall body 310 includes a receiving cavity, and the shear wall body 310 and two precast steel column modules 100 located at its two ends enclose a wall cavity 315. This wall cavity 315 is used to accommodate the concrete cast-in-place within the precast shear wall 300 on the construction site, allowing the shear wall body 310 and the precast steel column modules 100 to be formed into a shear wall. Once the concrete is poured into the wall cavity 315 and solidifies, a shear wall is formed.

[0132] like Figure 16 As shown, two precast steel column modules 100 are fixedly connected to both sides of the shear wall body 310 along its length and are located in the receiving cavity of the shear wall body 310. The two sides of the shear wall body 310 along its length refer to the left and right sides of the shear wall body 310 in the installation / use state. The geometry of the precast shear wall 300 is defined by the shear wall body 310.

[0133] Furthermore, the shear wall body 310 may include an inner membrane shell 3102 and an outer membrane shell 3104 arranged opposite to each other and in parallel. The inner membrane shell 3102, the outer membrane shell 3104, and two precast steel column modules 100 enclose a wall cavity 315. That is, the inner membrane shell 3102, the outer membrane shell 3104, and the two precast steel column modules 100 enclose the wall cavity 315 from four directions: front, back, left, and right.

[0134] Please continue to refer to Figure 16 As shown in this embodiment, two precast steel column modules 100 are fixedly connected to both sides of the shear wall body 310 along its length and located in the receiving cavity; the surface of the precast steel column module 100 near the inner membrane shell 3102 is fixedly connected to the inner membrane shell 3102, and the surface of the precast steel column module 100 near the outer membrane shell 3104 is fixedly connected to the outer membrane shell 3104. For example, the fixed connection method may include welding, bolt connection, or self-tapping screw connection, etc. The embodiments of the present invention do not specifically limit the above fixed connection method, and it depends on the actual needs.

[0135] Furthermore, the precast shear wall 300 may also include a shear wall steel frame 330.

[0136] Specifically, the shear wall steel frame 330 is fixedly connected in the wall cavity 315, and the two ends of the shear wall steel frame 330 in the transverse direction are fixedly connected to two precast steel column modules 100 respectively.

[0137] Optionally, one side of the shear wall steel frame 330 along its thickness direction is fixedly connected to the inner membrane shell 3102 via a first connector, and the other side of the shear wall steel frame 330 along its thickness direction is fixedly connected to the outer membrane shell 3104 via a second connector. The shear wall steel frame 330 can be connected to the inner membrane shell 3102 and the outer membrane shell 3104 via the first and second connectors respectively, forming a "sandwich" structure for the shear wall body 310. That is, one side of the shear wall steel frame 330 is connected to the inner membrane shell 3102 via the first connector, and the other side is connected to the outer membrane shell 3104 via the second connector, forming an integral structure with a formwork-free design.

[0138] Optionally, the first connector and the second connector may include self-tapping screws, angle steel, channel steel or flat steel plate, etc.

[0139] The length direction of the shear wall steel frame 330 is the same as the lateral extension direction of the shear wall body 310. Precast steel column modules 100 are vertically fixedly connected to both ends of the shear wall steel frame 330 along its length direction. The two ends of the shear wall steel frame 330 along its length direction can be fixedly connected to the surface of the precast steel column modules 100 by welding.

[0140] Please see Figure 17The diagram shown is a structural schematic of the second type of precast shear wall 300.

[0141] The precast shear wall of this structure has the same basic structure as the precast shear wall of the above structure. The difference is that two precast steel column modules 100 are fixedly connected to both sides of the shear wall body 310 along the length direction, but the precast steel column modules 100 are not located in the receiving cavity of the shear wall body 310. That is, the precast steel column modules 100 are fixedly connected to the ends of the shear wall body 310 along the length direction.

[0142] like Figure 17 As shown, the shear wall body 310 includes an inner membrane shell 3102 and an outer membrane shell 3104. Two precast steel column modules 100 are fixedly connected to both ends of the shear wall body 310. The inner membrane shell 3102, the outer membrane shell 3104, and the two precast steel column modules 100 on the left and right sides enclose the wall cavity 315 from four directions: front, back, left, and right. The shear wall steel frame 330 is fixedly connected in the wall cavity 315, and the two ends of the shear wall steel frame 330 along the transverse direction are fixedly connected to the two precast steel column modules 100 respectively.

[0143] In summary, for the two types of precast shear walls 300 described above, when the shear wall formed after the precast shear wall 300 is poured with concrete is the exterior wall of the building, the inner membrane shell 3102 of the shear wall body 310 is located on the side of the shear wall facing the interior, and the outer membrane shell 3104 of the shear wall body 310 is located on the side of the shear wall facing the exterior. Furthermore, the inner membrane shell 3102 and the outer membrane shell 3104 are arranged opposite to and parallel to each other, forming a wall cavity 315 enclosed by the inner membrane shell 3102, the outer membrane shell 3104, and the precast steel column modules 100 on both sides. That is to say, on the construction site, the concrete poured for the precast shear wall 300 will be poured between the inner membrane shell 3102, the outer membrane shell 3104, and the two precast steel column modules 100 of the shear wall body 310.

[0144] The inner membrane shell 3102 and outer membrane shell 3104 included in the shear wall body 310 can serve as wall side panels during the module production and hoisting stages and formwork during the construction stage. This allows the prefabricated room modules provided by the embodiments of the present invention to improve the rigidity of the modules during the production and transportation stages, and to eliminate the need for on-site shear wall reinforcement binding and formwork erection, thus saving construction steps and personnel.

[0145] This application also provides a modular building, including the aforementioned prefabricated steel column module 100, assembled steel structure 200, or prefabricated shear wall 300. This modular building possesses the beneficial effects of the aforementioned steel column module, which will not be elaborated upon here.

[0146] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0147] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A prefabricated steel column module, characterized in that, include: The steel column body includes a first end and a second end opposite to each other, and the first end has a first insertion groove along the axial direction. A first steel column assembly has a first protruding ridge extending in a first preset direction protruding from one end of its outer side wall, and an axially arranged insertion plate at the other end. The insertion plate is inserted into a first insertion slot, and the other end of the first steel column assembly is inserted into the steel column body and fixedly connected to the steel column body via the insertion plate. The second steel column assembly has a second protruding ridge extending along a second preset direction on its inner sidewall, and the second steel column assembly is fixedly connected to the second end of the steel column body. The first steel column assembly includes a first steel column, the first protrusion protruding from the outer side wall of the first steel column, and the first steel column assembly also includes a guide member, the guide member being at least partially fixedly connected to the outer side wall of the first steel column, the guide member being adapted to the inner wall of the second steel column assembly of another prefabricated steel column module that is sleeved with the prefabricated steel column module.

2. The precast steel column module according to claim 1, characterized in that, A second insertion slot is formed at one end of the first steel column along the axial direction, and the insertion plate is inserted into the second insertion slot.

3. The precast steel column module according to claim 2, characterized in that, The first and second plug slots are coplanar, the middle position of the plug plate mates with the second plug slot, and the two sides of the plug plate mate with the first plug slot.

4. The precast steel column module according to claim 2, characterized in that, The first insertion slot is coplanar with the central axis of the steel column body, and the second insertion slot is coplanar with the central axis of the first steel column.

5. The precast steel column module according to claim 2, characterized in that, The first steel column assembly also includes a plurality of first reinforcing bars, which are spaced apart on the outer side wall of the first steel column and all extend along the first preset direction to form the first protruding ridge.

6. The precast steel column module according to claim 1, characterized in that, The guide includes a lug, which is fixedly connected to the outer wall at the diagonal position of the first steel column.

7. The precast steel column module according to claim 6, characterized in that, The side of the support lug furthest from the first steel column has an arc-shaped structure.

8. The precast steel column module according to claim 2, characterized in that, The guide component includes a guide cone and a guide post that are fixedly connected. The guide post is fixedly connected to the outer wall of the first steel column at a diagonal position. The guide cone is connected to the end of the guide post and is located at the end of the first steel column away from the second insertion slot.

9. The precast steel column module according to claim 8, characterized in that, There are multiple guide posts, and each guide post is fixed to the outer side wall of the first steel column at a diagonal position. The guide cone includes a conical plate that is connected to each guide post, and the sides of the conical plates away from the guide posts intersect at the middle position.

10. The precast steel column module according to claim 1, characterized in that, The second steel column assembly includes a second steel column and a connecting assembly; The second steel column has multiple welding grooves on its sidewall. One side of the connecting component has a concave-convex shape to form multiple second convex ridges extending along the second preset direction. The other side of the connecting component is disposed on the inner sidewall of the second steel column. The connecting component and the second steel column are welded and fixed at the welding groove position.

11. The precast steel column module according to claim 10, characterized in that, The connecting assembly includes a steel plate and a second reinforcing bar, and there are multiple second reinforcing bars. The steel plate includes a first side and a second side facing away from each other. Multiple second reinforcing bars are sequentially and spaced apart and welded to the first side of the steel plate. The multiple second reinforcing bars extend along the second preset direction to form the second protruding ridge. The second side of the steel plate is disposed on the inner wall of the second steel column.

12. The precast steel column module according to claim 10, characterized in that, The connecting assembly includes a steel plate, which includes a first side and a second side facing away from each other. The first side is provided with a plurality of second protruding ridges extending along a second preset direction. The second side of the steel plate is disposed on the inner wall of the second steel column.

13. The precast steel column module according to claim 12, characterized in that, Multiple grooves are sequentially spaced on the first side of the steel plate, and the multiple grooves extend along the second preset direction, with the second convex ridge formed between any two adjacent grooves.

14. The precast steel column module according to claim 1, characterized in that, The second steel column assembly includes a second steel column and a third steel column. The sidewall of the second steel column has multiple welding grooves. The third steel column is a hollow column structure and includes multiple crossbeams extending along the second preset direction. The third steel column is embedded in the second steel column, and the welding groove corresponds to at least a portion of the crossbeam. The second steel column and the third steel column are welded and fixed at the position of the welding groove.

15. The precast steel column module according to claim 14, characterized in that, The third steel column also includes a vertical beam that extends axially, and a horizontal beam that connects two adjacent vertical beams. The vertical beam and the horizontal beam together form the hollow column structure, wherein the axial direction has an angle with the second preset direction.

16. The precast steel column module according to claim 14, characterized in that, The third steel column is a rectangular steel plate with multiple through slots extending along the second preset direction, so that a crossbeam is formed between two adjacent through slots. The rectangular steel plate is bent multiple times along the second preset direction, and the ends are welded together after bending to form a hollow column structure.

17. A prefabricated steel structure, characterized in that, The system includes at least two precast steel column modules as described in any one of claims 1-16, wherein the at least two precast steel column modules include a lower steel column module and an upper steel column module, wherein the second steel column component of the upper steel column module is sleeved on the first steel column component of the lower steel column module, and the second steel column component of the upper steel column module abuts against the top end of the steel column body of the lower steel column module.

18. A precast shear wall, characterized in that, include: Shear wall body, the shear wall body having a receiving cavity; and Two precast steel column modules as described in any one of claims 1-16, the two precast steel column modules being fixedly connected to both sides of the shear wall body along its length, and the shear wall body and the two precast steel column modules forming a wall cavity for cast-in-place concrete.

19. The precast shear wall according to claim 18, characterized in that, The shear wall body includes an inner membrane shell and an outer membrane shell arranged in parallel with each other. The inner membrane shell, the outer membrane shell, and the two prefabricated steel column modules enclose the wall cavity.

20. The precast shear wall according to claim 18, characterized in that, It also includes a shear wall steel frame, which is fixedly connected in the cavity of the wall, and both ends of the shear wall steel frame are fixedly connected to the two precast steel column modules respectively.

21. The precast shear wall according to claim 18, characterized in that, The two precast steel column modules are fixedly connected to both sides of the shear wall body along the length direction and are located in the receiving cavity.

22. A modular building, characterized in that, This includes prefabricated steel column modules as described in any one of claims 1-16, prefabricated steel structures as described in claim 17, or prefabricated shear walls as described in any one of claims 18-21.

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