A unit assembled steel grid shear wall

Abstract

The application discloses a unit assembly type steel grid shear wall, which comprises a steel grid shear wall structure fixedly connected between a frame beam and a frame column through high-strength bolts, the steel grid shear wall structure is longitudinally mixed and spliced by a plurality of full-width grid structure bodies and a plurality of half-width grid structure bodies, and the full-width grid structure body and the half-width grid structure body are both in rectangular shape; the length of the half-width grid structure body is equal to the length of the full-width grid structure body, and the width of the half-width grid structure body is half of the width of the full-width grid structure body. The steel plate shear wall body is discretized and unitized, and has high bearing capacity and good ductility. The node plate and the vertical rod in the unit are made of high-strength steel and are supported by the inclined beams of the inclined braces, so that the calculation length of the vertical rod is small, and the buckling damage is not prone to occur, so that the grid unit has sufficient vertical bearing capacity.

Description

Technical Field

[0001] This invention relates to the field of shear wall technology, and in particular to a modular steel mesh shear wall. Background Technology

[0002] As building height and load increase, the vertical load borne by shear walls continuously increases. Steel plate shear walls are prone to out-of-plane buckling under vertical loads. Furthermore, since steel plate shear walls are made entirely of the same material, the stress at the corner joints is greater than that at the center of the steel plate. Failure at these joints leads to overall failure of the steel plate, failing to fully utilize the strength and energy dissipation capacity of the steel. The required thickness of the steel plates for steel plate shear walls is also continuously increasing, resulting in a large amount of on-site welding and significant residual deformation and stress. Summary of the Invention

[0003] In response to the technical problems mentioned in the background art, the present invention provides a discrete, modular prefabricated steel grid shear wall with high load-bearing capacity.

[0004] The present invention adopts the following technical solution: a unit-assembled steel grid shear wall, comprising a steel grid shear wall structure fixedly connected between frame beams and frame columns by high-strength bolts. The steel grid shear wall structure is formed by longitudinally splicing several full-width grid structures and several half-width grid structures. Both the full-width grid structures and the half-width grid structures are rectangular. The length of the half-width grid structure is equal to the length of the full-width grid structure, and the width of the half-width grid structure is half the width of the full-width grid structure.

[0005] Furthermore, the full-width grid structure includes a first rectangular outer frame, which is spliced ​​together by a pair of parallel first longitudinal beams and first transverse beams. The connection between the first longitudinal beams and the first transverse beams is fixedly connected by first corner node plates. A first reinforcing transverse beam is provided in the middle section of the first rectangular outer frame. The two ends of the first reinforcing transverse beam are fixedly connected to the pair of first longitudinal beams by first triangular inner connecting node plates, dividing the first rectangular outer frame into upper and lower regions. Four first diagonal beams are provided in each of the upper and lower regions, and the whole arrangement forms a rhomboid grid structure. The two ends of each first diagonal beam are respectively connected by a first rectangular outer connecting node plate located in the middle section of the first longitudinal beam and the middle section of the first transverse beam in the upper and lower regions, and a central node plate in the middle section of the first reinforcing transverse beam.

[0006] Furthermore, the half-grid structure includes a second rectangular outer frame, which is spliced ​​together by a pair of parallel second longitudinal beams and a pair of second transverse beams. The connection between the first longitudinal beam and the first transverse beam is fixedly connected by a second corner node plate. The inner side of the second rectangular outer frame is provided with several second reinforcing transverse beams. Each of the second reinforcing transverse beams is fixedly connected to the pair of second longitudinal beams by a set of second triangular inner connecting node plates and a second rectangular inner connecting node plate, dividing the second rectangular outer frame into four equal parts. Each set of second triangular inner connecting node plates and second rectangular inner connecting node plates is arranged alternately. Each of the equal parts is provided with a second inclined beam. The two ends of the second inclined beam in the middle equal part are connected to two adjacent second triangular inner connecting node plates in sequence. The first end of the second inclined beam in the two equal parts is connected to the second corner node plate, and the second end is connected to the adjacent second triangular inner connecting node plate.

[0007] Furthermore, the first longitudinal beam, the second longitudinal beam, the first crossbeam, the second crossbeam, the first reinforcing crossbeam, the second reinforcing crossbeam, the first inclined beam, and the second inclined beam are all composed of two back-to-back channel steels connected by bolts.

[0008] Furthermore, the top of the first corner node plate and the second corner node plate are provided with a top wing plate, and the top wing plate is provided with a plurality of first bolt holes for connecting with the frame beam.

[0009] Furthermore, the outer sides of the first rectangular outer connecting node plate and the second rectangular inner connecting node plate are provided with outer connecting wing plates, and the outer connecting wing plates are provided with second bolt holes for connecting with the frame column.

[0010] Furthermore, the frame columns and frame beams are all steel components or steel-concrete composite components.

[0011] Compared with existing technologies, the advantages of this invention are as follows: The modular prefabricated steel grid shear wall designed in this invention discretizes and unitizes the steel plate shear wall, resulting in high load-bearing capacity and good ductility. The node plates and vertical members within the unit are made of high-strength steel and supported by inclined beams with diagonal bracing, resulting in a smaller calculated length of the vertical members and reducing the likelihood of buckling failure. This ensures that the grid unit has sufficient vertical load-bearing capacity.

[0012] The grid units of this invention can be prefabricated. On-site construction only requires bolt connections between the grid units and frame beams and columns, as well as between the grid units themselves, eliminating the need for welding. This results in fast construction speed and high efficiency. Grid units of the same specification can be mass-produced, and different units can be combined and assembled for different buildings according to their required dimensions, reducing costs and enabling rapid repairs in case of emergencies. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the overall structure of an embodiment of the modular steel mesh shear wall of the present invention;

[0014] Figure 2 This is a schematic diagram of the overall structure of another embodiment of the modular steel mesh shear wall of the present invention;

[0015] Figure 3 This is a schematic diagram of the overall structure of the full-width grid structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the overall structure of the half-grid structure of the present invention;

[0017] Figure 5 This is a schematic diagram of the cross-section of the beam component in this invention;

[0018] in:

[0019] 1-Full-width grid structure, 2-Half-width grid structure, 3-Frame beam, 4-Frame column, 5-Top wing plate, 6-External connecting wing plate

[0020] 1-1-First longitudinal beam, 1-2-First transverse beam, 1-3-First corner node plate, 1-4-First reinforcing transverse beam, 1-5-First triangular inner node plate, 1-6-First diagonal beam, 1-7-First rectangular outer node plate, 1-8-Center node plate

[0021] 2-1-Second longitudinal beam, 2-2-Second transverse beam, 2-3-Second corner node plate, 2-4-Second reinforcing transverse beam, 2-5-Second triangular inner node plate, 2-6-Second diagonal beam, 2-7-Second rectangular inner node plate,

[0022] 5-1-First bolt hole, 6-1-Second bolt hole. Detailed Implementation

[0023] The following description, with reference to the accompanying drawings, is provided to facilitate understanding of the technical solutions of the present invention by those skilled in the art. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention.

[0024] In the following detailed description, numerous specific details are set forth for ease of explanation to provide a full understanding of embodiments of the invention. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the invention.

[0025] The modular prefabricated steel mesh shear wall designed in this invention includes a steel mesh shear wall structure fixedly connected between frame beams 3 and frame columns 4 by high-strength bolts. Both the frame columns 4 and frame beams 3 involved in this invention are steel components or steel-concrete composite components. The steel mesh shear wall structure is longitudinally spliced ​​together from several full-width mesh structures 1 and several half-width mesh structures 2. Both the full-width mesh structures 1 and the half-width mesh structures 2 are rectangular; the length of the half-width mesh structure 2 is equal to the length of the full-width mesh structure 1, and the width of the half-width mesh structure 2 is half the width of the full-width mesh structure 1.

[0026] like Figure 1 The figure shows an overall structural schematic diagram of an embodiment of the unit-assembled steel grid shear wall of the present invention. As can be seen from the figure, it is composed of full-width grid structures 1 arranged longitudinally and fixedly connected to frame beams 3 and frame columns 4 by high-strength bolts. The various full-width grid structures 1 inside are also connected and fixed to each other by high-strength bolts.

[0027] like Figure 2 The diagram shown is a schematic representation of the overall structure of another embodiment of the modular steel mesh shear wall of the present invention. As can be seen, it is entirely composed of full-width mesh structures 1 arranged longitudinally, with one or more half-width mesh structures 2 arranged longitudinally at its ends. The full-width mesh structures 1 and half-width mesh structures 2 are fixedly connected to the frame beams 3 and frame columns 4 by high-strength bolts. The various full-width mesh structures 1 and half-width mesh structures 2 within the wall are also interconnected and fixed by high-strength bolts. It should be noted that... Figure 1 and Figure 2 Only two arrangement methods are shown. In actual implementation, full-width grid structure 1 and half-width grid structure 2 can also be arranged alternately for fixed connection. The specific installation method can be designed according to site requirements. For walls of different sizes, full-width units and half-width units can be used in combination to make the area of ​​the combined grid wall as close as possible to the space enclosed by beams and columns. When the remaining width after assembling with full-width grid units is less than the width of one full-width unit but greater than half the width of a full-width unit, half-width units can be used to continue assembling.

[0028] like Figure 3The diagram shows the overall structure of the full-width grid structure of the present invention. The full-width grid structure 1 includes a first rectangular outer frame, which is formed by splicing a pair of parallel first longitudinal beams 1-1 and first transverse beams 1-2. The connection between the first longitudinal beams 1-1 and the first transverse beams 1-2 is fixedly connected by first corner node plates 1-3. A first reinforcing transverse beam 1-4 is provided in the middle section of the first rectangular outer frame. The two ends of the first reinforcing transverse beam 1-4 are fixedly connected to the pair of first longitudinal beams 1-1 by first triangular inner connecting node plates 1-5, which divide the first rectangular outer frame into upper and lower regions. Four first diagonal beams 1-6 are provided in each of the upper and lower regions, and are arranged to form a rhomboid grid structure. The two ends of each first diagonal beam 1-6 are respectively connected by first rectangular outer connecting node plates 1-7 located in the middle section of the first longitudinal beam 1-1 and the middle section of the first transverse beam 1-2 in the upper and lower regions, and central node plates 1-8 located in the middle section of the first reinforcing transverse beam 1-4.

[0029] like Figure 4 The diagram shows the overall structure of the half-grid structure of the present invention. The half-grid structure 2 includes a second rectangular outer frame, which is formed by splicing a pair of parallel second longitudinal beams 2-1 and a pair of second transverse beams 2-2. The connection between the first longitudinal beams 2-1 and the first transverse beams 2-2 is fixedly connected by second corner node plates 2-3. Several second reinforcing transverse beams 2-4 are provided on the inner side of the second rectangular outer frame. Each second reinforcing transverse beam 2-4 is connected by a set of second triangular inner connecting node plates 2-5 and second rectangular inner connecting node plates 2-7. It is fixedly connected to a pair of second longitudinal beams 2-1, and divides the second rectangular outer frame into four equal parts. The second triangular inner connecting node plates 2-5 and the second rectangular inner connecting node plates 2-7 are arranged alternately in each group. Each equal part is provided with a second inclined beam 2-6. The two ends of the second inclined beam 2-6 in the middle equal part are connected to the two adjacent second rectangular inner connecting node plates 2-7 in sequence. The first end of the second inclined beam 2-6 in the two equal parts on both sides is connected to the second corner node plate 2-3, and the second end is connected to the adjacent second triangular inner connecting node plate 2-5.

[0030] In specific implementation, such as Figure 5 As shown, the first longitudinal beam 1-1, the second longitudinal beam 2-1, the first transverse beam 1-2, the second transverse beam 2-2, the first reinforcing transverse beam 1-4, the second reinforcing transverse beam 2-4, the first inclined beam 1-6, and the second inclined beam 2-6 are all composed of two high-strength channel steels back to back connected by bolts.

[0031] In practical implementation, the top ends of the first corner node plate 1-3 and the second corner node plate 2-3 are provided with top wing plates 5, which extend outwards and have several first bolt holes 5-1 for connection with the frame beam. The first bolt holes 5-1 can be bolted to the frame beam 3 using high-strength bolts.

[0032] In practical implementation, the outer sides of the first rectangular outer connecting node plate 1-7 and the second rectangular inner connecting node plate 2-7 are provided with outer connecting wing plates 6, which extend outwards. The outer connecting wing plates 6 have second bolt holes 6-1 for connection with the frame columns. The second bolt holes 6-1 are used for the mutual fixing of the first rectangular outer connecting node plate 1-7 and the second rectangular inner connecting node plate 2-7 with high-strength bolts, and can also be used for fixing the two to the frame columns 4 respectively with high-strength bolts.

[0033] In summary, the modular steel grid shear wall designed in this invention discretizes and unitizes the steel plate shear wall, resulting in high load-bearing capacity and good ductility. The use of high-strength steel for the node plates and vertical members within each unit, supported by inclined beams with diagonal bracing, minimizes the calculated length of the vertical members, reducing the likelihood of buckling failure and thus ensuring sufficient vertical load-bearing capacity for the grid unit.

[0034] Meanwhile, the grid units of this invention can be prefabricated, requiring only bolt connections between the grid units and frame beams and columns, as well as between the grid units themselves, on the construction site. No welding is needed, resulting in fast construction speed and high efficiency. Grid units of the same specification can be mass-produced, and different units can be combined and assembled for different buildings according to their required dimensions, reducing costs and enabling rapid repairs in case of emergencies.

[0035] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A modular prefabricated steel grid shear wall, characterized in that, The structure includes a steel mesh shear wall structure that is fixedly connected between the frame beam (3) and the frame column (4) by high-strength bolts. The steel mesh shear wall structure is composed of several full-width mesh structures (1) and several half-width mesh structures (2) longitudinally spliced ​​together. Both the full-width mesh structures (1) and the half-width mesh structures (2) are rectangular. The length of the half-width mesh structure (2) is equal to the length of the full-width mesh structure (1), and the width of the half-width mesh structure (2) is half the width of the full-width mesh structure (1). The full-width grid structure (1) includes a first rectangular outer frame, which is spliced ​​together by a pair of parallel first longitudinal beams (1-1) and first transverse beams (1-2). The connection between the first longitudinal beams (1-1) and the first transverse beams (1-2) is fixedly connected by first corner node plates (1-3). The middle section of the first rectangular outer frame is provided with a first reinforcing transverse beam (1-4), and the two ends of the first reinforcing transverse beam (1-4) are connected to the pair of first longitudinal beams (1-1) and the first transverse beams (1-2) by first triangular inner connecting node plates (1-5). The beam (1-1) is fixedly connected and divides the first rectangular outer frame into upper and lower regions. Each of the upper and lower regions is provided with four first inclined beams (1-6), which are arranged in a diamond grid structure. The two ends of each first inclined beam (1-6) are respectively connected by a first rectangular outer connecting node plate (1-7) set in the middle section of the first longitudinal beam (1-1) and the middle section of the first transverse beam (1-2) in the upper and lower regions, and a central node plate (1-8) in the middle section of the first reinforcing transverse beam (1-4). The half-grid structure (2) includes a second rectangular outer frame, which is spliced ​​together by a pair of parallel second longitudinal beams (2-1) and a pair of second transverse beams (2-2). The connection between the second longitudinal beams (2-1) and the second transverse beams (2-2) is fixedly connected by second corner node plates (2-3). The inner side of the second rectangular outer frame is provided with several second reinforcing transverse beams (2-4). Each of the second reinforcing transverse beams (2-4) is connected to the pair of second longitudinal beams (2-1) and the pair of second longitudinal beams (2-2) by a set of second triangular inner connecting node plates (2-5) and a second rectangular inner connecting node plate (2-7). -1) Fixed connection, and the second rectangular outer frame is divided into four equal parts. The second triangular inner connecting node plate (2-5) and the second rectangular inner connecting node plate (2-7) are arranged alternately in each group; each of the equal parts is provided with a second inclined beam (2-6). The two ends of the second inclined beam (2-6) in the middle equal part are connected to the two adjacent second rectangular inner connecting node plates (2-7) in sequence. The first end of the second inclined beam (2-6) in the two equal parts on both sides is connected to the second corner node plate (2-3), and the second end is connected to the adjacent second triangular inner connecting node plate (2-5).

2. The modular prefabricated steel grid shear wall according to claim 1, characterized in that, The first longitudinal beam (1-1), the second longitudinal beam (2-1), the first transverse beam (1-2), the second transverse beam (2-2), the first reinforcing transverse beam (1-4), the second reinforcing transverse beam (2-4), the first inclined beam (1-6), and the second inclined beam (2-6) are all composed of two back-to-back channel steels connected by bolts.

3. The modular prefabricated steel grid shear wall according to claim 2, characterized in that, The top ends of the first corner node plate (1-3) and the second corner node plate (2-3) are provided with top wing plates (5), and the top wing plates (5) are provided with a plurality of first bolt holes (5-1) for connecting with the frame beam.

4. The unit-assembled steel grid shear wall according to claim 3, characterized in that, The outer side of the first rectangular outer connecting node plate (1-7) and the second rectangular inner connecting node plate (2-7) is provided with an outer connecting wing plate (6), and the outer connecting wing plate (6) is provided with a second bolt hole (6-1) for connecting with the frame column.

5. The modular prefabricated steel grid shear wall according to claim 4, characterized in that, The frame columns (4) and frame beams (3) are both steel components or steel-concrete composite components.

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