A concrete MiC structural system with dampers and buckling-restrained braces

Abstract

The present invention relates to a concrete MiC structural system with dampers and buckling-resistance braces, comprising a plurality of concrete module units connected sequentially from top to bottom; the concrete module units comprise at least two precast modules, which are fixedly connected by cast-in-place concrete; the precast modules comprise a damper precast partition wall, a buckling-resistance brace precast partition wall, and two unsupported precast partition walls; the damper precast partition wall and the buckling-resistance brace precast partition wall are arranged in parallel, with the two unsupported precast partition walls disposed between the damper precast partition wall and the buckling-resistance brace precast partition wall; the buckling-resistance brace precast partition walls of the two precast modules are fixedly connected by cast-in-place concrete. Advantageously, the concrete 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, thus reducing construction costs; and has a simple structure and convenient construction.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a concrete MiC structural system with a damper and an anti-buckling brace. 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 concrete MiC structural system with dampers 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 concrete MiC structural system with dampers and anti-buckling supports, which solves the technical problems of high construction difficulty and high construction cost in 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] The embodiment of the present invention provides a concrete MiC structural system with dampers and anti-buckling braces, comprising a plurality of concrete module units connected in sequence from top to bottom. The concrete module unit comprises at least two prefabricated modules, the two prefabricated modules are arranged horizontally, and there is a gap between the two.

[0010] The prefabricated modules include a damper prefabricated partition wall, a buckling-resistant 5 support prefabricated partition wall and two unsupported prefabricated partition walls.

[0011] The buckling-braced prefabricated partition walls are arranged in parallel, and the two unsupported prefabricated partition walls are arranged between the damper prefabricated partition wall and the buckling-restrained braced prefabricated partition wall. The buckling-restrained braced prefabricated partition walls of the two prefabricated modules are fixedly connected by cast-in-situ concrete.

[0012] Optionally, the damper prefabricated partition wall comprises a first concrete prefabricated partition wall, a first cast-in-place concrete beam, a metal damping component and a concrete prefabricated wall pier.

[0013] The piers are aligned up and down, the first precast concrete partition wall is arranged on both sides of the precast concrete wall pier, the first cast-in-place concrete beam is arranged on the top of the first precast concrete partition wall and the precast concrete wall pier, and the metal damping component is arranged between the two precast concrete wall piers.

[0014] 5 Optionally, the metal damping component includes a metal damper, an embedded plate and an anchor bar.

[0015] The metal damper is fixedly connected to the prefabricated concrete pier through the embedded plate and the anchor bar.

[0016] Optionally, the prefabricated concrete pier is fixedly connected to the first cast-in-place concrete beam via embedded steel bars.

[0017] Optionally, the damper prefabricated partition wall further includes a first module column, wherein the first module column

[0018] Located on the outside of the prefabricated partition wall, both ends of the first cast-in-situ concrete beam are fixedly connected to the top ends of the two first module columns respectively.

[0019] Optionally, the buckling-resistance braced prefabricated partition wall comprises a second concrete prefabricated partition wall, a second

[0020] Cast-in-situ concrete beams, second module columns and buckling-resistance energy dissipation supports. Two second module columns are located on both sides of the second concrete prefabricated partition wall, and the second cast-in-situ concrete is located on the second

[0021] At the top of the precast concrete partition wall, both ends of the second cast-in-place concrete beam are respectively connected to the top ends of the two second module columns, and the two anti-buckling energy dissipation supports are arranged in a V shape in the second precast concrete partition wall.

[0022] Optionally, the first end of the buckling-resistance support is connected to the connection between the second cast-in-place concrete beam and the second module column through a node, and the second end of the buckling-resistance support is connected to the lower center of the second precast concrete partition wall through the node.

[0023] Optionally, the node includes a gusset plate and an angle steel, with two gusset plates 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 connection between the second cast-in-place concrete beam and the second modular column via the gusset plate, and the second end of the buckling-restrained brace is fixedly connected to the lower center of the second precast concrete partition wall via the gusset plate.

[0024] Optionally, an anchoring structure is provided at the installation site of the node, and the anchoring structure includes a node anchor plate and a node anchor bar, two node anchor plates are arranged in parallel inside the installation site, and multiple node anchor bars are arranged between the two node anchor plates.

[0025] (3) Beneficial effects

[0026] The beneficial effects of the present invention are:

[0027] The present invention provides a concrete MiC structural system with dampers and buckling-resistance braces. The system improves the overall stiffness and lateral resistance of the structure through prefabricated modules formed by damper prefabricated partition walls, buckling-resistance brace prefabricated partition walls, and unsupported prefabricated partition walls. The damper prefabricated partition walls, buckling-resistance brace 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 damper prefabricated partition walls increase the additional damping of the prefabricated modules, thereby improving the ductility and seismic energy dissipation capacity of the prefabricated modules. The buckling-resistance brace prefabricated partition walls can significantly increase the lateral stiffness and reduce the number of supports required when hoisting the prefabricated modules. Compared to the prior art, the concrete 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, thus reducing construction costs. Furthermore, the system has a simple structure and is convenient to construct. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the plan layout of the concrete module unit in a specific embodiment of the present invention;

[0029] Figure 2 This is a schematic structural diagram of a damper prefabricated partition wall in a specific embodiment of the present invention;

[0030] Figure 3 is a schematic structural diagram of a metal damping component in a specific embodiment of the present invention;

[0031] Figure 4 Schematic diagram of anchor bar distribution of embedded plate in a specific embodiment of the present invention;

[0032] Figure 5 Schematic diagram of the structure of a buckling-restrained braced prefabricated partition wall in a specific embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of node connections in a specific embodiment of the present invention;

[0034] Figure 7 for Figure 6 Schematic cross-sectional view of section AA.

[0035] [Description of Reference Numerals]

[0036] 1: Prefabricated modules;

[0037] 2: Damper precast partition wall; 21: First concrete precast partition wall; 22: First cast-in-place concrete beam; 23: Metal damping component; 231: Metal damper; 232: Embedded plate; 233: Anchor bar; 24: Concrete precast wall pier; 25: Embedded steel bar; 26: First module column;

[0038] 3: Buckling-restrained brace precast partition wall; 31: Second concrete precast partition wall; 32: Second cast-in-place concrete beam; 33: Second modular column; 34: Buckling-restrained brace; 35: Node; 351: Node plate; 352: Angle steel; 36: Anchor structure; 361: Node anchor plate; 362: Node anchor bar;

[0039] 4: Unsupported prefabricated partition walls;

[0040] 5: Cast-in-place concrete. DETAILED DESCRIPTION

[0041] 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.

[0042] like Figure 1 and Figure 2The specific embodiment of the present invention provides a concrete MiC structural system with dampers and anti-buckling braces, comprising a plurality of concrete module units connected in sequence from top to bottom. The concrete module unit comprises at least two precast modules 1, the two precast modules 1 are arranged horizontally, and the two are fixedly connected by cast-in-place concrete 5. The precast module 1 comprises a damper precast partition wall 2, an anti-buckling brace precast partition wall 3, and two unsupported precast partition walls 4. The damper precast partition wall 2 and the anti-buckling brace precast partition wall 3 are arranged in parallel, and the two unsupported precast partition walls 4 are arranged between the damper precast partition wall 2 and the anti-buckling brace precast partition wall 3. The anti-buckling brace precast partition walls 3 of the two precast modules 1 are fixedly connected by cast-in-place concrete 5.

[0043] Specifically, the prefabricated module 1, formed by the damper prefabricated partition wall 2, the buckling-resistance brace prefabricated partition wall 3, and the unsupported prefabricated partition wall 4, improves the overall stiffness and lateral resistance of the structure. The damper prefabricated partition wall 2, the buckling-resistance brace prefabricated partition wall 3, and the unsupported prefabricated partition wall 4 of the prefabricated module 1 can all be prefabricated and assembled in the factory to improve installation accuracy and reduce installation deviation. The damper prefabricated partition wall 2 adds additional damping to the prefabricated module 1, improving its ductility and seismic energy dissipation capacity. The buckling-resistance brace prefabricated partition wall 3 can significantly increase the lateral stiffness and reduce the number of supports required for hoisting the prefabricated module 1. Compared with the existing technology, this concrete 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 and increasing the building's indoor usable area. Furthermore, it has a simple structure and is easy to construct.

[0044] Furthermore, as shown in the figure, the damper precast partition wall 2 includes a first precast concrete partition wall 21, a first cast-in-place concrete beam 22, a first modular column 26, a metal damping member 23, and a precast concrete pier 24. The two precast concrete piers 24 are aligned vertically. The first precast concrete partition wall 21 is located on either side of the precast concrete pier 24. Two first modular columns 26 are located outside the first precast concrete partition wall 21. The first cast-in-place concrete beam 22 is located on top of the first precast concrete partition wall 21 and the precast concrete pier 24. The two ends of the first cast-in-place concrete beam 22 are fixedly connected to the top ends of the two first modular columns 26. The metal damping member 23 is located between the two precast concrete piers 24. The precast concrete pier 24 is fixedly connected to the first cast-in-place concrete beam 22 via embedded steel bars 25. The metal damping member 23 includes a metal damper 231, an embedded plate 232, and anchor bars 233. The metal damper 231 is fixedly connected to the precast concrete wall pier 24 via an embedded plate 232 and anchor bars 233. Specifically, the metal damper 231 is fixedly connected to the embedded plate 232. Multiple anchor bars 233 are evenly distributed on the embedded plate 232. These anchor bars 233 extend into the precast concrete wall pier 24, ensuring a secure connection between the metal damper 231 and the precast concrete wall pier 24. This design offers advantages such as simple construction, flexible layout, and ease of opening. The first precast concrete partition wall 21, first modular column 26, and precast concrete wall pier 24 at the bottom are all fixed to the building foundation (not shown) of the concrete MiC structural system.

[0045] Furthermore, as shown in the figure, the buckling-resistance brace precast partition wall 3 includes a second precast concrete partition wall 31, a second cast-in-place concrete beam 32, a second modular column 33, and a buckling-resistance brace 34. Two second modular columns 33 are located on either side of the second precast concrete partition wall 31. A second cast-in-place concrete beam 32 is located at the top of the second precast concrete partition wall 31. The ends of the second cast-in-place concrete beam 32 are connected to the top ends of the two second modular columns 33. Two buckling-resistance braces 34 are arranged in a V-shape within the second precast concrete partition wall 31. Specifically, the first end of the buckling-resistance brace 34 connects to the junction of the second cast-in-place concrete beam 32 and the second modular column 33 via a node 35, while the second end of the buckling-resistance brace 34 connects to the lower center of the second precast concrete partition wall 31 via a node 35. The second precast concrete partition wall 31 and the second modular column 33, located at the bottom, are both fixed to the building foundation of the concrete MiC structural system. Node 35 includes a gusset plate 351 and an angle steel 352. The two gusset plates 351 are arranged in a cross pattern and secured to each other via the angle steel 352. The first end of the buckling-restrained brace 34 is fixedly connected to the junction of the second cast-in-place concrete beam 32 and the second module column 33 via the gusset plate 351. The second end of the buckling-restrained brace 34 is fixedly connected to the lower center of the second precast concrete partition wall 31 via the gusset plate 351. Furthermore, the second end of the buckling-restrained brace 34 is fixedly connected to the middle of the second cast-in-place concrete beam 32 located below the second precast concrete partition wall 31 via the gusset plate 351. In this specific implementation, both ends of the buckling-restrained brace 34 are fixedly connected to the gusset plate 351 via high-strength bolts.

[0046] Furthermore, as shown in the figure, an anchoring structure 36 is provided at the installation site of the node 35. This anchoring structure 36 comprises a node anchor plate 361 and node anchor bars 362. Two node anchor plates 361 are arranged parallel to the interior of the installation site, and multiple node anchor bars 362 are provided between the two node anchor plates 361. Specifically, anchoring structures 36 are provided at both ends of the second cast-in-place concrete beam 32 and the top of the second modular column 33. Anchoring structures 36 are also provided in the middle of the second cast-in-place concrete beam 32. This improves the bearing capacity of the installation site of the node 35, prevents bearing damage, and further enhances the stability of the buckling-restrained brace 34.

[0047] Therefore, under the action of small earthquakes, the axial stiffness of the anti-buckling energy-dissipating 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-dissipating support 34 and the metal damper 231 are the first to yield and dissipate energy, forming multiple seismic defense lines.

[0048] Furthermore, in this embodiment, the unsupported precast partition wall 4 includes a third precast concrete partition wall and a third cast-in-place concrete beam. The third precast concrete partition wall is fixed between the first modular column 26 and the second modular column 33 on the same side. The third cast-in-place concrete beam is fixed to the top of the third precast concrete partition wall. The ends of the third cast-in-place concrete beam are respectively fixedly connected to the top ends of the first modular column 26 and the second modular column 33 on the same side. The third precast concrete partition wall, located at the bottom, is fixed to the building foundation of the concrete MiC structural system.

[0049] The concrete MiC structural system with dampers and buckling-resistance braces provided in this specific embodiment has prefabricated components of the damper prefabricated partition wall 2, buckling-resistance brace prefabricated partition wall 3, and unsupported prefabricated partition wall 4 of the prefabricated module 1 that can be processed and prefabricated in the factory and assembled. The cast-in-place concrete part is constructed on the construction site to form the prefabricated module 1. The buckling-resistance brace prefabricated partition walls 3 of the two prefabricated modules 1 are fixedly connected by cast-in-place concrete 5 to form a concrete module unit. According to the height of the building to be connected, the concrete module unit at the bottom is fixed to the building foundation, and multiple concrete module units are spliced ​​and installed in sequence from bottom to top until the required building height is reached.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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 concrete MiC structural system with dampers and buckling-restrained braces, characterized in that: It includes a plurality of concrete module units connected in sequence from top to bottom; The concrete module unit comprises at least two prefabricated modules (1), the two prefabricated modules (1) are arranged horizontally, and the two are fixedly connected by cast-in-situ concrete (5); The prefabricated module (1) comprises a damper prefabricated partition wall (2), a buckling-resistance brace prefabricated partition wall (3), and two unsupported prefabricated partition walls (4); The damper prefabricated partition wall (2) and the buckling-resistance brace prefabricated partition wall (3) are arranged in parallel, and the two unsupported prefabricated partition walls (4) are arranged between the damper prefabricated partition wall (2) and the buckling-resistance brace 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 damper prefabricated partition wall (2) comprises a first concrete prefabricated partition wall (21), a first cast-in-situ concrete beam (22), a metal damping component (23) and a concrete prefabricated wall pier (24); The two precast concrete piers (24) are aligned vertically, the first precast concrete partition wall (21) is arranged on both sides of the precast concrete pier (24), the first cast-in-situ concrete beam (22) is arranged on the top of the first precast concrete partition wall (21) and the precast concrete pier (24), and the metal damping member (23) is arranged between the two precast concrete piers (24); The buckling-resistance brace prefabricated partition wall (3) comprises a second concrete prefabricated partition wall (31), a second cast-in-situ concrete beam (32), a second modular column (33) and a buckling-resistance energy-dissipating brace (34); Two second module columns (33) are arranged on both sides of the second concrete precast partition wall (31), the second cast-in-situ concrete is arranged on the top of the second concrete precast partition wall (31), the two ends of the second cast-in-situ concrete beam (32) are respectively connected to the top ends of the two second module columns (33), and the two anti-buckling energy dissipation supports (34) are arranged in a V shape in the second concrete precast partition wall (31).

2. The concrete MiC structural system with dampers and buckling-restrained braces according to claim 1, characterized in that: The metal damping component (23) includes a metal damper (231), an embedded plate (232), and anchor bars (233); The metal damper (231) is fixedly connected to the prefabricated concrete pier (24) via the embedded plate (232) and the anchor bar (233).

3. The concrete MiC structural system with dampers and buckling-restrained braces according to claim 1, characterized in that: The prefabricated concrete wall pier (24) is fixedly connected to the first cast-in-situ concrete beam (22) via pre-buried steel bars (25).

4. The concrete MiC structural system with dampers and buckling-restrained braces according to claim 1, characterized in that: The damper prefabricated partition wall (2) further includes a first module column (26); The first module columns (26) are arranged outside the prefabricated partition wall, and the two ends of the first cast-in-situ concrete beam (22) are respectively fixedly connected to the top ends of the two first module columns (26).

5. The concrete MiC structural system with dampers and buckling-restrained braces according to claim 1, characterized in that: The first end of the buckling-resistance energy dissipation support (34) is connected to the connection point of the second cast-in-situ concrete beam (32) and the second module column (33) through a node (35), and the second end of the buckling-resistance energy dissipation support (34) is connected to the lower center of the second precast concrete partition wall (31) through the node (35).

6. The concrete MiC structural system with dampers and buckling-restrained braces according to claim 5, characterized in that: The 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 energy dissipation brace (34) is fixedly connected to the connection point of the second cast-in-situ concrete beam (32) and the second module column (33) through the node plate (351), and the second end of the buckling-resistance energy dissipation brace (34) is fixedly connected to the lower center of the second precast concrete partition wall (31) through the node plate (351).

7. The concrete MiC structural system with dampers and buckling-restrained braces according to claim 5, characterized in that: An anchoring structure (36) is provided at the installation location of the node (35), and the anchoring structure (36) includes a node anchor plate (361) and a node anchor bar (362). Two node anchor plates (361) are arranged in parallel inside the installation location, and a plurality of node anchor bars (362) are arranged between the two node anchor plates (361).

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