A steel MiC structural system with energy-absorbing metal plates and buckling-restrained braces

Abstract

The present invention relates to a steel MiC structural system with energy-absorbing metal plates and buckling-restrained braces, comprising a plurality of steel structural module units connected sequentially from top to bottom. The steel structural module units comprise at least two prefabricated modules, arranged horizontally and fixedly connected by cast-in-place concrete. The prefabricated modules include a metal plate prefabricated partition wall, a buckling-restrained brace prefabricated partition wall, and two unsupported prefabricated partition walls. The metal plate prefabricated partition wall and the buckling-restrained brace prefabricated partition wall are arranged parallel to each other, with the two unsupported prefabricated partition walls positioned between the metal plate prefabricated partition wall and the buckling-restrained brace prefabricated partition wall. The buckling-restrained brace prefabricated partition walls of the two prefabricated modules are fixedly connected by cast-in-place concrete. Advantageously, the steel MiC structural system with energy-absorbing metal plates and buckling-restrained braces can meet the structural seismic resistance requirements of high-intensity areas without increasing the cross-sectional dimensions of components, thus reducing construction costs. Furthermore, the structure is simple and construction is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a steel MiC structural system with energy-absorbing metal plates and buckling-resistance braces. Background Art

[0002] Prefabricated buildings refer to buildings that transfer a large amount of on-site work in traditional construction methods to factories, where building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in the factory, transported to the construction site, and assembled and installed on site through reliable connection methods.

[0003] Prefabricated buildings have become an important direction for achieving green buildings and industrialization due to their short construction period and low environmental impact. Among them, Modular Integrated Construction (MiC) is the highest form of prefabricated buildings. At present, modular buildings in China are usually designed as if they were cast in situ, and generally have good bearing capacity and stiffness, but insufficient ductility and energy dissipation capacity, and poor seismic performance. The use of traditional seismic measures in high-intensity areas and the increase in structural cross-sectional dimensions will lead to an increase in the use of structural materials, compression of building area, and increased construction difficulty and cost. Therefore, it is necessary to consider installing energy-dissipating and shock-absorbing components in the modular system to dissipate the energy input by the earthquake, improve structural ductility, and ensure the seismic performance of modular buildings in high-intensity areas.

[0004] Therefore, there is an urgent need for a steel MiC structural system with energy-absorbing metal plates and anti-buckling braces that has low construction difficulty and low construction cost. Summary of the Invention

[0005] (1) Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a steel MiC structural system with energy-absorbing metal plates and anti-buckling supports, which solves the technical problems of high construction difficulty and high construction cost of the prior art.

[0007] (2) Technical solution

[0008] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] An embodiment of the present invention provides a steel MiC structural system with energy-absorbing metal plates and buckling-resistance braces, comprising a plurality of steel structure module units connected in sequence from top to bottom. The steel structure module unit comprises at least two prefabricated modules, the two prefabricated modules are arranged horizontally, and the two are fixedly connected by cast-in-place concrete. The prefabricated modules comprise a metal plate prefabricated partition wall, a buckling-resistance braced prefabricated partition wall, and two unsupported prefabricated partition walls. The metal plate prefabricated partition wall is arranged parallel to the buckling-resistance braced prefabricated partition wall, and the two unsupported prefabricated partition walls are arranged between the metal plate prefabricated partition wall and the buckling-resistance braced prefabricated partition wall. The buckling-resistance braced prefabricated partition walls of the two prefabricated modules are fixedly connected by cast-in-place concrete.

[0010] Optionally, the prefabricated metal plate partition wall includes first modular columns, a first top modular beam, a first bottom modular beam, an energy-dissipating metal component, and a wall support. Two first modular columns are vertically arranged in parallel, the first top modular beam and the first bottom modular beam are laterally supported between the two first modular columns, and the energy-dissipating metal component is fixed between the first top modular beam and the first bottom modular beam via the wall support.

[0011] Optionally, the energy-absorbing metal component includes an energy-absorbing metal plate and a connecting plate, and the energy-absorbing metal plate is fixedly connected to the wall support via the connecting plate.

[0012] Optionally, the wall support is further provided with a plurality of vertical stiffening ribs.

[0013] Optionally, the buckling-restrained brace prefabricated partition wall includes second modular columns, second top modular beams, second bottom modular beams, and buckling-restrained braces. Two second modular columns are arranged vertically and parallel to each other, the second top modular beam and the second bottom modular beam are each laterally supported between the two second modular columns, and two buckling-restrained braces are installed in a V-shape between the second top modular beam and the second bottom modular beam.

[0014] Optionally, the first end of the buckling-resistance support is connected to the connection between the second top module beam and the second module column through a connection node, and the second end of the buckling-resistance support is connected to the middle part of the second bottom module beam through the connection node.

[0015] Optionally, the connection node includes a gusset plate and an angle steel. Two gusset plates are arranged in a cross pattern and secured to each other by the angle steel. The first end of the buckling-restrained brace is fixedly connected to the junction of the second top module beam and the second module column via the gusset plate, and the second end of the buckling-restrained brace is fixedly connected to the middle portion of the second bottom module beam via the gusset plate.

[0016] Optionally, node stiffening ribs are provided at the connection between the second top module beam and the second module column and at the middle portion of the second bottom module beam.

[0017] Optionally, the metal plate prefabricated partition wall, the buckling-resistance braced prefabricated partition wall and the unsupported prefabricated partition wall are all made of steel.

[0018] (3) Beneficial effects

[0019] The beneficial effects of the present invention are:

[0020] The present invention provides a steel MiC structural system with energy-absorbing metal plates and buckling-resistance braces. This system improves the overall stiffness and lateral resistance of the structure through prefabricated modules formed by metal plate prefabricated partition walls, buckling-resistance braced prefabricated partition walls, and unsupported prefabricated partition walls. The metal plate prefabricated partition walls, buckling-resistance braced prefabricated partition walls, and unsupported prefabricated partition walls of the prefabricated modules can all be prefabricated and assembled in a factory to improve installation accuracy and reduce installation deviations. The metal plate prefabricated partition walls increase the additional damping of the prefabricated modules, improving their ductility and seismic energy dissipation capacity. The buckling-resistance braced prefabricated partition walls can significantly increase lateral stiffness and reduce the number of supports required for hoisting the prefabricated modules. Compared to existing technologies, this steel MiC structural system with energy-absorbing metal plates and buckling-resistance braces can meet the structural seismic resistance requirements of high-intensity areas without increasing the cross-sectional dimensions of the components, reducing construction costs. Furthermore, it has a simple structure and is easy to construct. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the planar layout of the steel structure module unit in a specific embodiment of the present invention;

[0022] Figure 2 This is a schematic structural diagram of a metal plate prefabricated partition wall in a specific embodiment of the present invention;

[0023] Figure 3 for Figure 2 Schematic cross-section of the AA section;

[0024] Figure 4 Schematic diagram of the structure of a buckling-restrained braced prefabricated partition wall in a specific embodiment of the present invention;

[0025] Figure 5 A connection diagram of connection nodes in a specific embodiment of the present invention;

[0026] Figure 6 for Figure 5 Schematic diagram of the BB section.

[0027] [Description of Reference Numerals]

[0028] 1: Prefabricated modules;

[0029] 2: Prefabricated metal panel partition wall; 21: First module column; 22: First top module beam; 23: First bottom module beam; 24: Energy-absorbing metal component; 241: Energy-absorbing metal plate; 242: Connecting plate; 25: Wall support; 26: Stiffening rib;

[0030] 3: Buckling-restrained brace precast partition wall; 31: Second module column; 32: Second top module beam; 33: Second bottom module beam; 34: Buckling-restrained brace; 35: Connection node; 351: Node plate; 352: Angle steel; 36: Node stiffener;

[0031] 4: Unsupported prefabricated partition walls;

[0032] 5: Cast-in-place concrete. DETAILED DESCRIPTION

[0033] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0034] like Figure 1 and Figure 2 This specific embodiment provides a steel MiC structural system with energy-absorbing metal plates and anti-buckling braces, including a plurality of steel structure module units connected in sequence from top to bottom. The steel structure module unit includes at least two prefabricated modules 1, the two prefabricated modules 1 are arranged horizontally, and the two are fixedly connected by cast-in-place concrete 5. The prefabricated module 1 includes a metal plate prefabricated partition wall 2, an anti-buckling brace prefabricated partition wall 3, and two unsupported prefabricated partition walls 4. The metal plate prefabricated partition wall 2 is arranged parallel to the anti-buckling brace prefabricated partition wall 3, and the two unsupported prefabricated partition walls 4 are arranged between the metal plate prefabricated partition wall 2 and the anti-buckling brace prefabricated partition wall 3. The anti-buckling brace prefabricated partition walls 3 of the two prefabricated modules 1 are fixedly connected by cast-in-place concrete 5. Among them, the metal plate prefabricated partition wall 2, the anti-buckling brace prefabricated partition wall 3 and the unsupported prefabricated partition wall 4 are all made of steel.

[0035] Specifically, the prefabricated module 1, formed by a metal plate prefabricated partition wall 2, a buckling-restrained brace prefabricated partition wall 3, and an unsupported prefabricated partition wall 4, improves the overall stiffness and lateral resistance of the structure. The metal plate prefabricated partition wall 2, the buckling-restrained brace prefabricated partition wall 3, and the unsupported prefabricated partition wall 4 of the prefabricated module 1 can all be prefabricated and assembled in a factory, improving installation accuracy and reducing installation deviations. The metal plate prefabricated partition wall 2 adds additional damping to the prefabricated module 1, improving its ductility and seismic energy dissipation capacity. The buckling-restrained brace prefabricated partition wall 3 significantly increases lateral stiffness and reduces the number of supports required for hoisting the prefabricated module 1. Compared to existing technologies, this steel MiC structural system with energy-dissipating metal plates and buckling-restrained braces can meet the structural seismic resistance requirements of high-intensity areas without increasing the cross-sectional dimensions of the components, thereby increasing the building's indoor usable area and reducing construction costs. It also features a simple structure and convenient construction.

[0036] Furthermore, as shown in the figure, the metal plate prefabricated partition wall 2 includes a first modular column 21, a first top modular beam 22, a first bottom modular beam 23, an energy-absorbing metal component 24, and a wall support 25. Two first modular columns 21 are arranged vertically and parallel to each other. The first top modular beam 22 and the first bottom modular beam 23 are laterally supported between the two first modular columns 21. The energy-absorbing metal component 24 is fixed between the first top modular beam 22 and the first bottom modular beam 23 via the wall support 25. The energy-absorbing metal component 24 includes an energy-absorbing metal plate 241 and a connecting plate 242. The energy-absorbing metal plate 241 is fixedly connected to the wall support 25 via the connecting plate 242. In this specific embodiment, the energy-absorbing metal plate 241 is fixedly connected to the connecting plate 242 via high-strength bolts, and the connecting plate 242 is fixedly connected to the wall support 25 via high-strength bolts. Specifically, both ends of the first top module beam 22 are fixed to the inner sides of the top ends of the two first module columns 21, and both ends of the first bottom module beam 23 are fixed to the inner sides of the bottom ends of the two first module columns 21. The bottom ends of the two first module columns 21 are respectively fixedly connected to the top ends of the two first module columns 21 located below them, and the bottom ends of the two first module columns 21 located at the bottom are fixed to the building foundation (not shown) of the steel MiC structural system. In this specific embodiment, the wall support 25 is a plate-like structure made of metal. The wall support 25 is also provided with a plurality of vertical stiffening ribs 26 for anti-buckling constraints. The top of the wall support 25 located above the energy-absorbing metal plate 241 is fixedly connected to the bottom of the first top module beam 22 by welding, and the bottom of the wall support 25 located below the energy-absorbing metal plate 241 is fixedly connected to the top of the first bottom module beam 23 by welding. The energy-absorbing metal plate 241 is connected to the first top module beam 22 and the first bottom module beam 23 through the wall supports 25 located above and below it, which has the advantages of simple structure, flexible layout, and easy opening of holes.

[0037] Furthermore, as shown in the figure, the buckling-resistance braced prefabricated partition wall 3 includes second modular columns 31, second top modular beams 32, second bottom modular beams 33, and buckling-resistance braces 34. The two second modular columns 31 are arranged vertically and parallel to each other, the second top modular beams 32 and second bottom modular beams 33 are each laterally supported between the two second modular columns 31, and the two buckling-resistance braces 34 are installed in a V-shape between the second top modular beams 32 and second bottom modular beams 33. Specifically, the two ends of the second top modular beam 32 are fixed to the inner sides of the top ends of the two second modular columns 31, the two ends of the second bottom modular beam 33 are fixed to the inner sides of the bottom ends of the two second modular columns 31, the bottom ends of the two second modular columns 31 are respectively fixed to the top ends of the two second modular columns 31 located below them, and the bottom ends of the two second modular columns 31 located at the bottom are fixed to the building foundation (not shown) of the steel MiC structural system. The first end of the buckling-restrained brace 34 is connected to the junction of the second top module beam 32 and the second module column 31 via a connection node 35. The second end of the buckling-restrained brace 34 is connected to the middle portion of the second bottom module beam 33 via a connection node 35. The connection node 35 includes a gusset plate 351 and an angle steel 252. The two gusset plates 351 are arranged in a cross pattern and secured to each other by an angle steel 352. The first end of the anti-buckling brace 34 is fixedly connected to the connection between the second top module beam 32 and the second module column 31 via a gusset plate 351. The second end of the anti-buckling brace 34 is fixedly connected to the middle portion of the second bottom module beam 33 via a gusset plate 351. In this specific embodiment, the two ends of the anti-buckling brace 34 are fixedly connected to the gusset plate 351 via high-strength bolts. The gusset plate 351 fixedly connected to the first end of the anti-buckling brace 34 is fixedly connected to the connection between the second top module beam 32 and the second module column 31 via welding. The gusset plate 351 fixedly connected to the second end of the anti-buckling brace 34 is fixedly connected to the middle portion of the second bottom module beam 33 via welding. Node stiffeners 36 for anti-buckling constraints are provided at the connection between the second top module beam 32 and the second module column 31 and in the middle portion of the second bottom module beam 33 to enhance the stability of the installation of the anti-buckling brace 34.

[0038] Therefore, under the action of small earthquakes, the axial stiffness of the anti-buckling energy-absorbing support 34 is used to improve the lateral stiffness of the structural system to meet the normal use requirements. Under the action of medium or large earthquakes, the anti-buckling energy-absorbing support 34 and the energy-absorbing metal plate 241 are the first to yield and dissipate energy, forming multiple seismic defense lines.

[0039] Furthermore, in this specific embodiment, the unsupported prefabricated partition wall 4 includes a third top module beam and a third bottom module beam, and the third top module beam and the third bottom module beam are respectively fixed transversely between the first module column 21 and the second module column 31 on the same side. Specifically, the two ends of the third top module beam are respectively fixedly connected to the top ends of the first module column 21 and the second module column 31 on the same side, and the two ends of the third bottom module beam are respectively fixedly connected to the bottom ends of the first module column 21 and the second module column 31 on the same side.

[0040] The steel MiC structural system with energy-absorbing metal plates and buckling-restrained braces provided in this specific embodiment has the metal plate prefabricated partition wall 2, buckling-restrained brace prefabricated partition wall 3, and unsupported prefabricated partition wall 4 of the prefabricated module 1 respectively prefabricated in the factory and assembled to form the prefabricated module 1. After being transported to the construction site, the buckling-restrained brace prefabricated partition walls 3 of the two prefabricated modules 1 are fixedly connected by cast-in-place concrete 5 to form a steel structure module unit. According to the required building height, the steel structure module units are spliced ​​and installed in sequence from bottom to top until the required building height is reached.

[0041] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0042] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] In the description of this specification, the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example and included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0045] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A steel MiC structural system with energy-absorbing metal plates and buckling-restrained braces, characterized in that: It includes a plurality of steel structure module units connected in sequence from top to bottom; The steel structure module unit comprises at least two prefabricated modules (1), the two prefabricated modules (1) are arranged horizontally, and are fixedly connected by cast-in-situ concrete (5); The prefabricated module (1) comprises a metal plate prefabricated partition wall (2), a buckling-resistance braced prefabricated partition wall (3), and two unsupported prefabricated partition walls (4); The metal plate prefabricated partition wall (2) and the buckling-resistance braced prefabricated partition wall (3) are arranged in parallel, and the two unsupported prefabricated partition walls (4) are arranged between the metal plate prefabricated partition wall (2) and the buckling-resistance braced prefabricated partition wall (3); The buckling-resistance braced prefabricated partition walls (3) of the two prefabricated modules (1) are fixedly connected by cast-in-situ concrete (5); The metal plate prefabricated partition wall (2) comprises a first module column (21), a first top module beam (22), a first bottom module beam (23), an energy-consuming metal component (24) and a wall support (25); Two first module columns (21) are arranged vertically and in parallel, the first top module beam (22) and the first bottom module beam (23) are respectively supported transversely between the two first module columns (21), and the energy-dissipating metal component (24) is fixed between the first top module beam (22) and the first bottom module beam (23) via the wall support (25); The buckling-resistance brace prefabricated partition wall (3) comprises a second module column (31), a second top module beam (32), a second bottom module beam (33) and a buckling-resistance energy dissipation brace (34); The two second module columns (31) are arranged vertically and in parallel, the second top module beam (32) and the second bottom module beam (33) are respectively supported transversely between the two second module columns (31), and the two anti-buckling energy dissipation supports (34) are installed in a V-shape between the second top module beam (32) and the second bottom module beam (33).

2. The steel MiC structural system with energy dissipating metal plates and buckling-restrained braces according to claim 1, characterized in that: The energy-consuming metal component (24) includes an energy-consuming metal plate (241) and a connecting plate (242); The energy-consuming metal plate (241) is fixedly connected to the wall support (25) via a connecting plate (242).

3. The steel MiC structural system with energy dissipating metal plates and buckling-restrained braces according to claim 1, characterized in that: The wall support (25) is also provided with a plurality of vertical stiffening ribs (26).

4. The steel MiC structural system with energy dissipating metal plates and buckling-restrained braces according to claim 1, characterized in that: The first end of the buckling-resistance support (34) is connected to the connection point between the second top module beam (32) and the second module column (31) through a connection node (35), and the second end of the buckling-resistance support (34) is connected to the middle part of the second bottom module beam (33) through the connection node (35).

5. The steel MiC structural system with energy dissipating metal plates and buckling-restrained braces according to claim 4, characterized in that: The connection node (35) includes a node plate (351) and an angle steel (352); The two node plates (351) are arranged in a cross-like manner, and the two node plates (351) are fixed by the angle steel (352); The first end of the buckling-resistance support (34) is fixedly connected to the connection between the second top module beam (32) and the second module column (31) through the node plate (351), and the second end of the buckling-resistance support (34) is fixedly connected to the middle part of the second bottom module beam (33) through the node plate (351).

6. The steel MiC structural system with energy dissipating metal plates and buckling-restrained braces according to claim 4, characterized in that: Node stiffening ribs (36) are provided at the connection between the second top module beam (32) and the second module column (31) and at the middle of the second bottom module beam (33).

7. The steel MiC structural system with energy dissipating metal plates and buckling-restrained braces according to claim 1, characterized in that: The metal plate prefabricated partition wall (2), the buckling-resistance braced prefabricated partition wall (3), and the unsupported prefabricated partition wall (4) are all made of steel.

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