Cold-formed thin-walled steel fabricated structural system

Abstract

The utility model relates to a cold-formed thin-walled steel fabricated structural system, and belongs to the technical field of structural engineering. Comprising combined joints, module main beams, module columns and module secondary beams. Column sleeves are arranged at the upper end and the lower end of the combined joint, a center joint is arranged between the column sleeves, horizontal partition plates are welded between the column sleeves and the center joint, a vertical end plate is welded to each side of the outer surface of the center joint, materials such as concrete can be poured into columns, and the bearing capacity and integrity of the combined joint are improved. The connecting sleeve has the beneficial effects and advantages that the connecting sleeve is small in size, light in weight and convenient to transport and hoist, the machining time is greatly shortened, the machining quality is guaranteed, modular design, factory production and specialized installation are integrally achieved through standardized modular production of components and the connecting sleeve, field assembly is simple and efficient, and the production efficiency is improved. The purposes of reducing labor, shortening the construction period and saving cost are achieved, and industrialization development of the fabricated building is promoted.

Description

Technical Field

[0001] The invention belongs to the technical field of structural engineering, and in particular relates to a cold-bent thin-walled steel assembled structural system. Background Art

[0002] Modular structure is a new type of prefabricated steel structure building that adopts integrated design, standardized production, and prefabricated construction. The modular structure has a high degree of completion and integration, reliable construction quality, and can steadily accelerate the project progress and maximize production efficiency. Modular buildings reduce the overall life cycle cost of buildings by virtue of their advantages of off-site standardized production and short construction time. As a new type of building structure, modular structure has obvious advantages such as green and low-carbon, sustainable development, and recycling, and is a new model for the development of prefabricated buildings. The modular structural system is composed of multiple independent modular units connected by modular nodes. The modular connection nodes are the key points and core of the modular structural system.

[0003] At present, the research on modular steel structure connection nodes by scholars at home and abroad is not yet mature, and the current modular connection nodes also have various shortcomings, such as: 1) The modular node connection design is too complicated, which is not conducive to on-site construction and large-scale production; 2) The modular node area requires welding, which does not achieve 100% assembly; 3) When using high-strength bolts for connection, each node usually requires dozens or even hundreds of bolt holes to be opened on the connected components and the connecting plates, which seriously increases the factory's processing time and costs; 4) The connection node structure is complex and the force transmission is unclear, which makes it difficult to adapt to the standardized development of modular structures. Utility Model Content

[0004] In order to better apply modular steel structure, a green building material, and enhance the reliability and stability of connection nodes, the present invention provides a cold-bent thin-walled steel assembly structure system, mainly to develop a simple and convenient steel structure beam-column connection node, so that the node force transmission is clear, the on-site installation is efficient, and it is conducive to large-scale processing and production. It has universality and good economy for the construction of steel frame houses. The technical solution adopted by the present invention is as follows:

[0005] A cold-bent thin-walled steel assembled structural system, comprising a composite node, a module main beam, a module column, and a module secondary beam;

[0006] The upper and lower ends of the combined node are column sleeves, a central node is provided between the column sleeves, a partition plate is welded between the column sleeves and the central node, the partition plate is a cross-shaped steel plate with a circular groove in the middle, holes are evenly provided near the circular groove in the cross-shaped steel plate for reinforcing bars, a vertical end plate is vertically welded on each side of the outer surface of the central node, the vertical end plate is provided with end plate bolt holes, and the vertical end plate is also vertically welded to the partition plate.

[0007] The module main beam is composed of a pair of back-to-back U-shaped section members, and multiple filler plates are arranged at equal intervals between the double U-shaped section members to improve the integrity of the module main beam. The web plate at the end of the module main beam is provided with a web bolt hole one, and the web bolt hole one opened on the web plate matches the end plate bolt hole opened on the vertical end plate of the node; the middle web plate of the module main beam is provided with a web bolt hole two, and the web bolt hole two opened on the web plate matches the filler bolt hole opened on the filler plate.

[0008] The modular column may be composed of two symmetrical C-section members, which are anchored at the curling edge to form a box section, or may be composed of two asymmetrical C-section members, which are connected by rivets to form a box section.

[0009] The module secondary beam is composed of a single C-section member. The web of the module secondary beam at the end of the beam is bent 90 degrees. The secondary beam web bolt holes opened on the bent web match the web bolt holes 2 and the filler plate bolt holes.

[0010] In the through cavity formed by the combined node and the module column, steel bars can be arranged and cementitious materials such as concrete can be poured.

[0011] Furthermore, the module column is inserted into the column sleeve and fits tightly against the inner wall of the sleeve and is supported by a circular slot.

[0012] Furthermore, the distance between the two partition plates on the upper and lower sides of the central node is consistent with the height of the module main beam, which plays a limiting role on the module main beam.

[0013] Furthermore, the module main beam is horizontally and transversely inserted between the two partition plates, and is tightened by passing bolts one through the web bolt hole one and the end plate bolt hole of the vertical end plate in sequence.

[0014] Furthermore, the spacing between the filling plates is reasonably arranged according to design requirements.

[0015] Furthermore, the module main beam is connected to the filler plate by bolt 2, and the bolt 2 passes through the web bolt hole 2 and the filler plate bolt hole in sequence and is tightened.

[0016] Furthermore, the module main beam is connected to the module secondary beam by bolt three, and bolt three passes through the secondary beam web bolt hole, web bolt hole two and filler plate bolt hole in sequence and is tightened.

[0017] Furthermore, the module column can be a box section or H-section composed of two symmetrical C-section members, or a box section composed of two asymmetrical C-section members. The module main beam is an H-section composed of double U-section members, and the column sleeve and center node are box sections.

[0018] Furthermore, a top node of a cold-bent thin-walled steel prefabricated structural system has an upper portion of a central node covered with a top plate having a circular hole.

[0019] Furthermore, the component connection method of a cold-bent thin-walled steel prefabricated structural system can be connected by bolts or rivets.

[0020] Beneficial effects of the present invention:

[0021] (1) The processed connecting sleeve is small in size and light in weight, and the size of each sleeve component is smaller, which is convenient for precise processing in the factory, realizing batch and standardized production to ensure processing accuracy and quality;

[0022] (2) The small size and light weight of the connecting sleeve have few restrictions during transportation and lifting, which makes it easy to transport and lift, and also avoids damage and deformation that often occur in the above processes;

[0023] (3) The processing procedures of nodes, columns, beams and other components have been completely simplified, which can greatly shorten the processing time and ensure the processing quality;

[0024] (4) During on-site installation, the above-mentioned connection sleeve and processed steel components can be used to fully realize the bolt-less and weld-free assembly connection of the main structure, greatly reducing the installation process, shortening the installation time by several times, and ensuring the construction quality;

[0025] (5) The interior of the connector is completely through, providing conditions for filling aggregates, and the internal structure is simple and the space is sufficient for bolt installation;

[0026] (6) Through the standardized modular production of components and connecting sleeves, the overall modular design, factory production, and professional installation, it has stable and reliable connection and installation performance, avoiding the disadvantages of welding and bolt connection on the construction site, making on-site assembly simple and efficient, achieving the purpose of reducing labor, shortening construction period, saving costs, and promoting the industrialization development of prefabricated buildings.

[0027] (7) The internal force generated by the modular connection node when it is subjected to load is clear, the force transmission is concise and clear, the intermediate node and sleeve ensure that the node area bears the load while tightly connecting the upper and lower module columns, and has good integrity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a cold-bent thin-walled steel assembled structural system of the present invention.

[0029] Figure 2 The present invention is a schematic diagram of the connection of intermediate column nodes in a cold-bent thin-walled steel prefabricated structural system.

[0030] Figure 3 This is a schematic diagram of the splitting of the combined node structure of the present invention.

[0031] Figure 4 It is a schematic diagram of the combined node structure diagram of the present invention.

[0032] Figure 5 It is a schematic diagram of the structure of the partition plate of the present invention.

[0033] Figure 6 It is a schematic diagram of the vertical end plate structure of the present invention.

[0034] Figure 7 It is a schematic diagram of the modular column structure of the present invention.

[0035] Figure 8 It is a schematic diagram of the main beam structure of the module of the present invention.

[0036] Fig. 9 The present invention is a schematic diagram of the assembly process of a cold-bent thin-walled steel prefabricated structural system.

[0037] Fig.10 The present invention is a schematic diagram of a corner column node connection of a cold-bent thin-walled steel prefabricated structural system.

[0038] Fig.11 The present invention is a schematic diagram of the connection of side column nodes of a cold-bent thin-walled steel prefabricated structural system.

[0039] Fig.12 It is a schematic diagram of the top node connection of the top floor of a cold-bent thin-walled steel prefabricated structural system of the present invention.

[0040] Fig.13 The present invention is a schematic diagram of the connection between the main and secondary beam nodes of a cold-bent thin-walled steel prefabricated structural system.

[0041] In the figure, 1 is a combined node; 2 is a module main beam; 3 is a module column; 4 is a module secondary beam; 101 is a column sleeve; 102 is a central node; 103 is a partition plate; 104 is a vertical end plate; 105 is an end plate bolt hole; 106 is a slot; 107 is a top plate; 201 is a U-section member; 202 is a web bolt hole one; 203 is a bolt one; 204 is a web bolt hole two; 205 is a bolt two; 206 is a filler plate; 207 is a filler plate bolt hole; 401 is a bent web; 402 is a secondary beam web bolt hole; 403 is a bolt three. DETAILED DESCRIPTION

[0042] In order to further illustrate the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present invention. Example

[0043] like Figure 1-Figure 13As shown, a cold-bent thin-walled steel assembly structure system of the present invention includes a combined node 1, a module main beam 2, a module column 3, and a module secondary beam 4;

[0044] The upper and lower ends of the combined node 1 are column sleeves 101, a central node 102 is provided between the column sleeves 101, a partition plate 103 is welded between the column sleeves 101 and the central node 102, the partition plate 103 is a cross-shaped steel plate with a circular groove 106 in the middle, holes are evenly provided near the circular groove 106 in the cross-shaped steel plate for reinforcing bars, a vertical end plate 104 is vertically welded on each side of the outer surface of the central node 102, the vertical end plate 104 is provided with an end plate bolt hole 105, and the vertical end plate 104 is also vertically welded to the partition plate 103.

[0045] The module main beam 2 is composed of a pair of back-to-back U-section members 201, and a plurality of filler plates 206 are arranged at equal intervals between the double U-section members 201 to improve the integrity of the module main beam 2. The web plate at the end of the module main beam 2 is provided with a web bolt hole 202, and the web bolt hole 202 opened on the web plate matches the end plate bolt hole 105 opened on the node vertical end plate 104; the middle web plate of the module main beam 2 is provided with a web bolt hole 204, and the web bolt hole 204 opened on the web plate matches the filler bolt hole 207 opened on the filler plate 206.

[0046] The module column 3 may be composed of two symmetrical C-section members, which are anchored at the curling edge to form a box section, or may be composed of two asymmetrical C-section members, which are connected by rivets to form a box section.

[0047] The module secondary beam 4 is composed of a single C-section member. The web of the module secondary beam 4 is bent 90 degrees at its end. The secondary beam web bolt hole 402 opened on the bent web 401 matches the web bolt hole 204 and the filler plate bolt hole 207 .

[0048] In the through cavity formed by the combined node 1 and the module column 3, steel bars can be arranged and cementitious materials such as concrete can be poured.

[0049] When the connection node is an intermediate column node, such as Figure 2 As shown, the composite node 1 is spliced ​​with two modular columns 3 and four modular beams 2;

[0050] When the connection node is a corner column node, such as Fig.10 As shown, the composite node 1 is spliced ​​with two modular columns 3 and two modular beams 2;

[0051] When the connection node is a side column node, such as Fig.11 As shown, the composite node 1 is spliced ​​with two modular columns 3 and three modular beams 2;

[0052] The installation steps of a cold-bent thin-walled steel prefabricated structural system are as follows:

[0053] S1: The combined node 1 is assembled as a whole, and the lower column sleeve 101 is inserted into the top of the lower module column 3;

[0054] S2: The module main beam 2 is horizontally inserted between the partition plates 103 along both sides of the vertical end plates 104;

[0055] S3: Use bolt 203 to pass through web bolt hole 202 and end plate bolt hole 105 of vertical end plate 104 in sequence and tighten;

[0056] S4: insert the filler plate 206 vertically between the double U-section members of the module main beam 2, and use the second bolt 205 to pass through the second web bolt hole 204 and the filler plate bolt hole 207 in sequence and tighten them;

[0057] S5: Insert the upper module column 3 into the upper column sleeve 101 of the combined node 1.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cold-bent thin-walled steel assembled structural system, characterized in that: It includes a combined node (1), a module main beam (2), a module column (3), and a module secondary beam (4); The upper and lower ends of the combined node (1) are column sleeves (101), a central node (102) is provided between the column sleeves (101), a partition plate (103) is welded between the column sleeves (101) and the central node (102), the partition plate (103) is a cross-shaped steel plate with a circular groove (106) in the middle, holes are evenly provided near the circular groove (106) on the cross-shaped steel plate for reinforcing bars, a vertical end plate (104) is vertically welded on each side of the outer surface of the central node (102), the vertical end plate (104) is provided with an end plate bolt hole (105), and the vertical end plate (104) is also vertically welded to the partition plate (103); The module main beam (2) is composed of a pair of back-to-back U-shaped cross-section components (201), a plurality of filler plates (206) are arranged at equal intervals between the U-shaped cross-section components (201) to improve the integrity of the module main beam (2), a web plate bolt hole (202) is provided on the end web of the module main beam (2), and the web plate bolt hole (202) provided on the web matches the end plate bolt hole (105) provided on the node vertical end plate (104); a web plate bolt hole (204) is provided on the middle web of the module main beam (2), and the web plate bolt hole (204) provided on the web matches the filler plate bolt hole (207) provided on the filler plate (206); The modular column (3) may be composed of two symmetrical C-section members, which are anchored at the curling edge to form a box-shaped section, or may be composed of two asymmetrical C-section members, which are connected by rivets to form a box-shaped section; The module secondary beam (4) is composed of a single C-section member, the web of the beam end of the module secondary beam (4) is bent 90 degrees, and the secondary beam web bolt hole (402) provided on the bent web (401) matches the web bolt hole 2 (204) and the filler plate bolt hole (207); In the through cavity formed by the combined node (1) and the module column (3), steel bars can be arranged and concrete cementitious materials can be poured.

2. The cold-bent thin-walled steel prefabricated structural system according to claim 1, characterized in that: The module column (3) is inserted into the column sleeve (101) and fits tightly against the inner wall of the sleeve, and is supported by the circular slot (106).

3. The cold-bent thin-walled steel prefabricated structural system according to claim 1, characterized in that: The distance between the two partition plates (103) on the upper and lower sides of the central node (102) is consistent with the height of the module main beam (2), thus playing a limiting role on the module main beam (2).

4. The cold-bent thin-walled steel prefabricated structural system according to claim 1, characterized in that: The module main beam (2) is horizontally inserted between two partition plates (103), and bolts (203) are passed through web bolt holes (202) and end plate bolt holes (105) of the vertical end plates (104) in sequence and are fastened.

5. The cold-bent thin-walled steel prefabricated structural system according to claim 1, characterized in that: The spacing between the filling plates (206) is reasonably arranged according to design requirements.

6. The cold-bent thin-walled steel prefabricated structural system according to claim 1, characterized in that: The module main beam (2) is connected to the filler plate (206) via a second bolt (205), and the second bolt (205) passes through a second web bolt hole (204) and a filler plate bolt hole (207) in sequence and is tightened.

7. The cold-bent thin-walled steel prefabricated structural system according to claim 1, characterized in that: The module main beam (2) and the module secondary beam (4) are connected via bolt three (403), and the bolt three (403) passes through the secondary beam web bolt hole (402), web bolt hole two (204) and filler plate bolt hole (207) in sequence and is tightened.

8. The cold-bent thin-walled steel prefabricated structural system according to claim 1, characterized in that: The module column (3) may be a box section or an H section composed of two symmetrical C-section components, or a box section composed of two asymmetrical C-section components. The module main beam (2) is an H section composed of double U-section components. The column sleeve (101) and the central node (102) are box sections.

9. The cold-bent thin-walled steel assembly structure system according to claim 1, characterized in that: A top node of a cold-bent thin-walled steel assembled structural system, wherein the upper part of a central node (102) is covered with a top plate (107) provided with a circular hole.

10. The cold-bent thin-walled steel prefabricated structural system according to claim 1, characterized in that: A component connection method of a cold-bent thin-walled steel prefabricated structural system can be connected by bolts or rivets.

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