A plate-type inter-module embedded steel column base joint and a connecting method thereof

Abstract

The application belongs to the technical field of fabricated buildings, and provides an embedded steel column foot joint between plate modules and a connecting method thereof. The embedded steel column foot joint between plate modules comprises a bottom plate, an H-shaped steel stand, a horizontal connecting plate and a vertical stiffening rib. The bottom plate is fixedly connected with a foundation, and the H-shaped steel stand is fixed on the bottom plate. The vertical stiffening rib is arranged outside the flange of the H-shaped steel stand. The horizontal connecting plate is arranged on the H-shaped steel stand. The H-shaped steel stand and the horizontal connecting plate form two opposite C-shaped clamping grooves for embeddedly connecting two C-shaped module columns. Each C-shaped module column is provided with a module column stiffening rib. The H-shaped steel stand, the horizontal connecting plate and the module column stiffening rib form a slot for embeddedly connecting a module cross beam. Each C-shaped module column and its corresponding module cross beam form a frame, and a wall panel is arranged on the frame to form a wall module unit. The wall module unit is arranged on both sides of the H-shaped steel stand to realize the mutual connection between multiple wall module units and the foundation.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated building technology, and particularly relates to an embedded steel column base node between panel modules and its connection method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In traditional construction, most work must be completed on-site. Long construction periods, severe environmental pollution, large material storage areas, and labor shortages have become barriers to the progress of the construction industry. With the development of modern industrial technology, buildings can be disassembled into modular units, prefabricated in factories, and then transported to the site for assembly. Modular steel structures, due to their advantages such as fast installation speed, high construction quality, light weight, good seismic performance, and easy recyclability, have become the mainstream direction for the development and progress of the prefabricated building industry.

[0004] Compared to prefabricated concrete structures, prefabricated steel structure exterior wall systems differ from traditional buildings and are more complex in design. Furthermore, because prefabricated buildings are generally used in medium to large-scale construction projects, they require high standards for the construction site, specialized hoisting equipment, and skilled workers, making installation complex.

[0005] In summary, the design and construction of column base joints in existing prefabricated steel structure buildings are complex, and the amount of steel used in the joint area is large, making it impossible to simultaneously meet the requirements of mechanical performance, construction efficiency, and installation accuracy. Summary of the Invention

[0006] To address the technical problems mentioned above, this invention provides an embedded steel column base node between plate modules and its connection method. It is applicable to the field of prefabricated steel structure building technology, enabling interconnection between multiple wall modules and foundations. It can establish a standardized modular unit system, facilitate the formation of standard steel column base node drawings during design, reduce design difficulty and cost, and facilitate factory-based and large-scale production during prefabrication, thereby improving production efficiency and reducing production costs.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The first aspect of the present invention provides an embedded steel column foot node between plate modules.

[0009] In one or more embodiments, an embedded steel column base node between plate modules includes: a base plate, an H-shaped steel column, a horizontal connecting plate, and vertical stiffening ribs;

[0010] The base plate is fixedly connected to the foundation, and the H-shaped steel column is fixed to the base plate;

[0011] The vertical stiffening ribs are located on the outer side of the flange of the H-shaped steel column;

[0012] The horizontal connecting plate is mounted on the H-beam steel column; the H-beam steel column and the horizontal connecting plate form two opposing C-shaped slots for fitting and fixing two C-shaped module columns; each C-shaped module column is provided with module column stiffening ribs; the H-beam steel column, the horizontal connecting plate, and the module column stiffening ribs form a slot for fitting and fixing the module crossbeam;

[0013] Each C-shaped modular column and its corresponding modular beam form a frame. Wall panels are provided on the frame to form wall module units. The wall module units are arranged on both sides of the H-shaped steel column to realize the interconnection between multiple wall modules and the foundation.

[0014] As one implementation method, the base plate has pre-drilled screw holes for connection and fixation to the foundation using anchor bolts.

[0015] As one implementation, the anchor bolts at the bottom of the base plate are provided with leveling nuts;

[0016] In one embodiment, double nuts are provided on the bolts of the anchor bolts on the upper part of the base plate.

[0017] In one implementation, the web length of the H-shaped steel column is matched with the web length of the C-shaped modular column;

[0018] In one implementation, the flange extension length of the H-shaped steel column on one side is matched with the flange length of the C-shaped module column.

[0019] In other embodiments, an embedded steel column base node between plate modules includes: a base plate, an irregular H-shaped steel column, a horizontal connecting plate, and vertical stiffening ribs; the irregular H-shaped steel column includes a web and a flange plate;

[0020] The base plate is fixedly connected to the foundation, and the irregular H-shaped steel column is fixed to the base plate;

[0021] The vertical stiffening ribs are located on the outer side of the flange of the irregular H-shaped steel column;

[0022] The horizontal connecting plate is mounted on the irregular H-shaped steel column and forms two slots with the flange plate to respectively engage and fix the first C-shaped module column and the second C-shaped module column; the first C-shaped module column and the second C-shaped module column are respectively provided with first module column stiffening ribs and second module column stiffening ribs; the irregular H-shaped steel column, the horizontal connecting plate, and the first module column stiffening ribs form a first slot for engaging and fixing the first module beam; the irregular H-shaped steel column, the horizontal connecting plate, and the second module column stiffening ribs form a second slot for engaging and fixing the second module beam.

[0023] The first module beam and the first C-shaped module column form a first frame, and the first frame is provided with a first wall panel to form a gable wall module unit; the second module beam and the second C-shaped module column form a second frame, and the second frame is provided with a second wall panel to form a longitudinal wall module unit.

[0024] In one implementation, the flange plate extending from the side of the irregular H-shaped steel column connected to the first C-shaped module column is matched with the web length of the first C-shaped module column.

[0025] In one embodiment, the web length of the irregular H-beam steel column matches the web length of the second C-type module column; the extension length of the side flange plate of the irregular H-beam steel column connecting to the second C-type module column matches the flange plate length of the second C-type module column.

[0026] A second aspect of the present invention provides a method for connecting embedded steel column base nodes between plate modules.

[0027] A method for connecting embedded steel column base nodes between plate modules as described above, comprising:

[0028] Step 1: According to the design requirements, process and manufacture the base plate, H-beam steel columns, horizontal connecting plates and vertical stiffening ribs, and weld them together to form the central steel column base node as a whole;

[0029] Step 2: Position the central steel column base node on the foundation to be installed, and fix the central steel column base node to the foundation anchor rod with bolts;

[0030] Step 3: Locate the wall module units on both sides and install the bolts between the C-shaped module column and the horizontal connecting plate;

[0031] Step 4: Install the bolts between the web of the C-type modular column and the web of the H-type steel column, as well as the bolts between the flange of the C-type modular column and the flange of the H-type steel column;

[0032] Step 5: Install the module crossbeam into the formed assembly slot, install the bolts, and complete the assembly.

[0033] Another method for connecting embedded steel column base nodes between plate modules, as described above, includes:

[0034] Step 1: According to the design requirements, process and manufacture the base plate, irregular H-shaped steel columns, horizontal connecting plates and vertical stiffening ribs, and weld them together to form the corner steel column foot node as a whole;

[0035] Step 2: Position the corner steel column base node on the foundation to be installed, and fix the corner steel column base node to the foundation anchor rod with bolts;

[0036] Step 3: Position the gable module unit and install the bolts between the first C-shaped module column and the horizontal connecting plate;

[0037] Step 4: Position the longitudinal wall module unit and install the bolts between the second C-type module column and the horizontal connecting plate;

[0038] Step 5: Install the bolts between the web of the second C-type module and the web of the irregular H-shaped steel column, the bolts between the flange of the second C-type module and the flange of the irregular H-shaped steel column, the bolts between the flange of the first C-type module and the web of the irregular H-shaped steel column, and the bolts between the web of the first C-type module and the flange of the irregular H-shaped steel column.

[0039] Step 6: Install the first module crossbeam and the second module crossbeam into the formed assembly slots, install the bolts, and complete the assembly.

[0040] Compared with the prior art, the beneficial effects of the present invention are:

[0041] (1) Applicable to the field of prefabricated steel structure building technology, it can realize the interconnection between multiple wall modules and foundation. The shape of the H-shaped steel column foot can be adjusted to be applicable to the middle column foot node and the corner column foot node. The dimensions of each connector of the column foot node are related to the dimensions of the column, beam and other components. When the columns and beams are selected with common standard dimensions, a standardized modular unit system can be established after design verification. It is convenient to form a standard drawing set of steel column foot nodes during design, reducing design difficulty and cost. During prefabrication, it is convenient to realize factory-based and large-scale production, improve production efficiency and reduce production costs.

[0042] (2) The web and flange of the modular column are fixed to the H-shaped steel column by tie bolts to form a stable connection. The modular columns generate a clustering effect, which improves the overall structure and forms a reinforced column foot node structure with higher stiffness and strength. In terms of mechanical performance, it improves the load-bearing capacity and deformation resistance of the column foot.

[0043] (3) By using horizontal connecting plates to form slots in the installation of modular columns and beams for embedding and fixing, the modular columns and beams can be quickly and accurately positioned, effectively simplifying the complex precision problems in the design and construction of prefabricated steel structures. The structure is simple, easy to assemble, has relaxed construction conditions, and large construction tolerance error. Ordinary hoisting equipment and workers can complete the installation.

[0044] (4) All on-site installation is fixed by bolt connection. Double nuts are set to achieve quick and accurate leveling of the bottom of the column base. By using tie bolts to connect the column base and the wall module unit, the construction needs of on-site welding and pouring are eliminated. The installation is fast, easy to adjust, and meets the characteristics of environmental protection and low carbon.

[0045] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0046] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0047] Figure 1 This is a schematic elevation view of the connection of the middle column base node in an embodiment of the present invention;

[0048] Figure 2 This is a top view schematic diagram of the connection of the middle column base node in an embodiment of the present invention;

[0049] Figure 3 This is a schematic elevation view of the corner column base node connection according to an embodiment of the present invention;

[0050] Figure 4 This is a top view schematic diagram of the corner column base node connection according to an embodiment of the present invention;

[0051] Figure 5 This is a schematic cross-sectional view of the column base node connection according to an embodiment of the present invention.

[0052] The components include: 1. Base plate; 2. Vertical stiffening ribs; 3. H-shaped steel columns; 4. C-shaped modular columns; 4-1. First C-shaped modular column; 4-2. Second C-shaped modular column; 5. Horizontal connecting plate; 6. Modular beams; 6-1. First modular beam; 6-2. Second modular beam; 7. Modular column stiffening ribs; 8. Irregular H-shaped steel columns; 9. Anchor bolts; 10. Foundation; 20. Leveling nuts; 21. Double nuts. Detailed Implementation

[0053] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0054] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] Example 1

[0057] like Figure 1 , Figure 2 and Figure 5 As shown, this embodiment provides an embedded steel column base node between plate modules, which specifically includes: a base plate 1, an H-shaped steel column 3, a horizontal connecting plate 5, and a vertical stiffening rib 2. The base plate 1, the H-shaped steel column 3, the horizontal connecting plate 5, and the vertical stiffening rib 2 are assembled into a whole in the factory before use, serving as the central column base node.

[0058] Specifically, the base plate 1 is fixedly connected to the foundation 10, and the H-shaped steel column 3 is fixed on the base plate 1. In this embodiment, the base plate 1 has pre-drilled screw holes, and the connection and fixation with the foundation 10 are achieved by anchor bolts 9. The lower screw of the base plate 1 is provided with a leveling nut 20, and the upper screw is provided with double nuts 21. The double nuts 21 are used to achieve quick and accurate leveling of the bottom of the column base.

[0059] The vertical stiffening ribs are provided on the outer side of the flange of the H-shaped steel column; the H-shaped steel column 3 is provided with transverse stiffening ribs as horizontal connecting plates 5, and the horizontal connecting plates are provided on the H-shaped steel column.

[0060] The H-shaped steel column 3 and the horizontal connecting plate 5 form two opposing C-shaped slots for fixing two C-shaped module columns 4; each C-shaped module column 4 is provided with module column stiffening ribs 7; the H-shaped steel column 3, the horizontal connecting plate 5, and the module column stiffening ribs 7 form a slot for fixing the module crossbeam 6.

[0061] Each C-shaped module column 4 and its corresponding module beam 6 form a frame. The frame is provided with wall panels to form wall module units. The wall module units are arranged on both sides of the H-shaped steel column to realize the interconnection between multiple wall modules and the foundation.

[0062] In this embodiment, the H-shaped steel column 3 is suitable for connecting wall module units in the same direction, and the C-shaped module columns 4 on both sides are both longitudinal wall module columns or gable wall module columns, that is, the middle column foot node.

[0063] In the central column base node, the web length of the H-beam steel column 3 matches the web length of the C-beam module column 4. The single-sided extension length of the flange plate of the H-beam steel column 3 should match the flange plate length of the C-beam module column 4, with an appropriate tolerance for easy installation. Two to five bolt holes are evenly provided at appropriate positions on the web and flange of the C-beam module column 4 and the H-beam steel column 3, respectively. The bolt holes can be round or long slotted to facilitate installation. During installation, tie bolts are used to fix the web and flange of the C-beam module column 4 and the H-beam steel column 3 respectively, so that the left and right module units of the longitudinal wall are embedded and connected to both sides of the H-beam steel column 3.

[0064] In this embodiment, the slot formed by the horizontal connecting plate 5 and the H-shaped steel column 3 can realize the rapid and accurate positioning of the C-shaped module column 4 and the module beam 6. The position of the horizontal connecting plate 5 can be adjusted according to the column base embedment depth, design elevation, and the designed installation position of the C-shaped module column 4 and the module beam 6.

[0065] The connection method for embedded steel column base nodes between plate modules described in this embodiment specifically includes:

[0066] Step 1: According to the design requirements, process and manufacture the base plate, H-beam steel columns, horizontal connecting plates and vertical stiffening ribs, and weld them together to form the central steel column base node as a whole;

[0067] Step 2: Position the central steel column base node on the foundation to be installed, and fix the central steel column base node to the foundation anchor rod with bolts;

[0068] Step 3: Locate the wall module units on both sides and install the bolts between the C-shaped module column and the horizontal connecting plate;

[0069] Step 4: Install the bolts between the web of the C-type modular column and the web of the H-type steel column, as well as the bolts between the flange of the C-type modular column and the flange of the H-type steel column;

[0070] Step 5: Install the module crossbeam into the formed assembly slot, install the bolts, and complete the assembly.

[0071] The column base node and its connection method in this embodiment are applicable to the field of prefabricated steel structure building technology. They enable interconnection between multiple wall modules and the foundation, establishing a standardized modular unit system. During design, this facilitates the creation of standard steel column base node drawings, reducing design difficulty and cost. Prefabrication facilitates factory-scale production, improving production efficiency and reducing costs. It allows for rapid and accurate positioning of modular columns and beams, effectively simplifying complex precision issues in prefabricated steel structure design and construction. The structure is simple, easy to assemble, allows for flexible construction conditions, and has a large tolerance for construction errors. Installation can be completed with ordinary hoisting equipment and workers. On-site installation is entirely bolted, eliminating the need for on-site welding and pouring. Installation is fast, easy to adjust, and conforms to environmental protection and low-carbon characteristics.

[0072] Example 2

[0073] like Figure 3 , Figure 4 and Figure 5As shown in this embodiment, an embedded steel column base node between plate modules includes: a base plate 1, an irregular H-shaped steel column 8, a horizontal connecting plate 5, and a vertical stiffening rib 2; the irregular H-shaped steel column 8 includes a web and a flange. In this embodiment, the base plate 1, the irregular H-shaped steel column 8, the horizontal connecting plate 5, and the vertical stiffening rib 2 are welded together to form an integral corner steel column base node.

[0074] Specifically, the base plate 1 is fixedly connected to the foundation, and the H-shaped steel column is fixed on the base plate.

[0075] In this embodiment, the base plate 1 has pre-drilled screw holes, and is connected and fixed to the foundation 10 by anchor bolts 9. The lower screw of the base plate 1 is provided with a leveling nut 20, and the upper screw is provided with double nuts 21. The double nuts 21 are used to achieve quick and accurate leveling of the bottom of the column base.

[0076] In this embodiment, the vertical stiffening rib 2 is provided on the outer side of the flange of the irregular H-shaped steel column 8; the horizontal connecting plate 5 is provided on the irregular H-shaped steel column 8 and forms two slots with the flange plate to respectively engage and fix the first C-shaped module column 4-1 and the second C-shaped module column 4-2; the first C-shaped module column 4-1 and the second C-shaped module column 4-2 are respectively provided with the first module column stiffening rib and the second module column stiffening rib; the irregular H-shaped steel column 8, the horizontal connecting plate 5 and the first module column stiffening rib form a first slot for engaging and fixing the first module beam 6-1; the irregular H-shaped steel column, the horizontal connecting plate and the second module column stiffening rib form a second slot for engaging and fixing the second module beam 6-2;

[0077] The first module beam and the first C-shaped module column form a first frame, and the first frame is provided with a first wall panel to form a gable wall module unit; the second module beam and the second C-shaped module column form a second frame, and the second frame is provided with a second wall panel to form a longitudinal wall module unit.

[0078] In this embodiment, at the corner column base node, the web length of the irregular H-beam steel column 8 matches the web length of the second C-type module column 4-2. The extension length of the flange plate on the side of the irregular H-beam steel column 8 connecting to the second C-type module column 4-2 should match the flange plate length of the second C-type module column 4-2. The length of the flange plate on the widened end of the irregular H-beam steel column 8 connecting to the first C-type module column 4-1 matches the web length of the first C-type module column 4-1. No flange plate is provided at the other end for installing the first module crossbeam 6-1 and the second module crossbeam 6-2, with a suitable tolerance for easy installation. The second C-type module column 4-2 and the irregular H-shaped steel column 8 are provided with two to five bolt holes at appropriate positions on the web and flange, respectively. The bolt holes can be round or long slotted to facilitate installation. During installation, the installation method of the longitudinal wall module unit side and the middle column foot node is the same. The gable wall module unit side uses tie bolts to connect the web of the first C-type module column 4-1 and the flange of the irregular H-shaped steel column 8, and the flange of the first C-type module column 4-1 and the web of the irregular H-shaped steel column 8, respectively, so that the longitudinal wall and gable wall module units are embedded in the irregular H-shaped steel column 8 to achieve vertical conversion connection.

[0079] The connection method for embedded steel column base nodes between plate modules as described above in this embodiment includes:

[0080] Step 1: According to the design requirements, process and manufacture the base plate, irregular H-shaped steel columns, horizontal connecting plates and vertical stiffening ribs, and weld them together to form the corner steel column foot node as a whole;

[0081] Step 2: Position the corner steel column base node on the foundation to be installed, and fix the corner steel column base node to the foundation anchor rod with bolts;

[0082] Step 3: Position the gable module unit and install the bolts between the first C-shaped module column and the horizontal connecting plate;

[0083] Step 4: Position the longitudinal wall module unit and install the bolts between the second C-type module column and the horizontal connecting plate;

[0084] Step 5: Install the bolts between the web of the second C-type module and the web of the irregular H-shaped steel column, the bolts between the flange of the second C-type module and the flange of the irregular H-shaped steel column, the bolts between the flange of the first C-type module and the web of the irregular H-shaped steel column, and the bolts between the web of the first C-type module and the flange of the irregular H-shaped steel column.

[0085] Step 6: Install the first module crossbeam and the second module crossbeam into the formed assembly slots, install the bolts, and complete the assembly.

[0086] The column base node and its connection method in this embodiment improve the overall structure due to the clustering effect between the modular columns, forming a reinforced column base node structure with higher stiffness and strength. This enhances the load-bearing capacity and deformation resistance of the column base in terms of mechanical properties. Finite element software such as ABAQUS can be used to simulate and analyze the column base in engineering examples. Furthermore, the maximum stress in the column base of this embodiment is 230 MPa. Referring to this stress, designing double C-shaped steel column bases or I-shaped steel column bases with the same load-bearing capacity would increase material usage by 7%-15%, respectively. In addition to its efficient and economical cross-sectional characteristics, the new steel column base exhibits better application characteristics in environments with axial compression and a small amount of bending moment in the vertical web plane.

[0087] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An embedded steel column base node between plate modules, characterized in that, include: The structure includes a base plate, irregular H-beam steel columns, horizontal connecting plates, and vertical stiffening ribs; the irregular H-beam steel columns include a web and a flange plate. The base plate is fixedly connected to the foundation, and the irregular H-shaped steel column is fixed to the base plate; The vertical stiffening ribs are located on the outer side of the flange of the irregular H-shaped steel column; The horizontal connecting plate is mounted on the irregular H-shaped steel column and forms two slots with the flange plate to respectively engage and fix the first C-shaped module column and the second C-shaped module column; the first C-shaped module column and the second C-shaped module column are respectively provided with first module column stiffening ribs and second module column stiffening ribs; the irregular H-shaped steel column, the horizontal connecting plate, and the first module column stiffening ribs form a first slot for engaging and fixing the first module beam; the irregular H-shaped steel column, the horizontal connecting plate, and the second module column stiffening ribs form a second slot for engaging and fixing the second module beam. The first module beam and the first C-shaped module column form a first frame, and the first frame is provided with a first wall panel to form a gable wall module unit; the second module beam and the second C-shaped module column form a second frame, and the second frame is provided with a second wall panel to form a longitudinal wall module unit.

2. The embedded steel column base node between plate modules as described in claim 1, characterized in that, The base plate has pre-drilled screw holes for connection and fixation to the foundation using anchor bolts.

3. The embedded steel column base node between plate modules as described in claim 2, characterized in that, The anchor bolts at the bottom of the base plate are equipped with leveling nuts; or The anchor bolts on the upper part of the base plate are fitted with double nuts.

4. The embedded steel column base node between plate modules as described in claim 1, characterized in that, The flange plate extending from the side of the irregular H-shaped steel column connected to the first C-shaped module column has a length that matches the web length of the first C-shaped module column. or The web length of the irregular H-shaped steel column matches the web length of the second C-shaped module column; the extension length of the side flange plate of the irregular H-shaped steel column connecting to the second C-shaped module column matches the flange plate length of the second C-shaped module column.

5. A method for connecting embedded steel column base nodes between plate modules as described in any one of claims 1-4, characterized in that, include: Step 1: According to the design requirements, process and manufacture the base plate, irregular H-shaped steel columns, horizontal connecting plates and vertical stiffening ribs, and weld them together to form the corner steel column foot node as a whole; Step 2: Position the corner steel column base node on the foundation to be installed, and fix the corner steel column base node to the foundation anchor rod with bolts; Step 3: Position the gable module unit and install the bolts between the first C-shaped module column and the horizontal connecting plate; Step 4: Position the longitudinal wall module unit and install the bolts between the second C-type module column and the horizontal connecting plate; Step 5: Install the bolts between the web of the second C-type module and the web of the irregular H-shaped steel column, the bolts between the flange of the second C-type module and the flange of the irregular H-shaped steel column, the bolts between the flange of the first C-type module and the web of the irregular H-shaped steel column, and the bolts between the web of the first C-type module and the flange of the irregular H-shaped steel column. Step 6: Install the first module crossbeam and the second module crossbeam into the formed assembly slots, install the bolts, and complete the assembly.

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