Multi-layered assembled steel-concrete composite shear wall and its construction method

Abstract

The present invention relates to a multi-layered assembled steel-concrete composite shear wall and a construction method thereof, wherein the composite shear wall comprises an octagonal prefabricated reinforced concrete slab, a four-pointed star-shaped steel-constrained concrete damper, a T-shaped patterned steel plate, a rectangular steel tube concrete column, a shoulder-pole-shaped steel beam and a self-locking steel bracket; two shoulder-pole-shaped steel beams are transversely arranged between two rectangular steel tube concrete columns; a group of self-locking steel brackets are clamped on the upper and lower sides of the end of the shoulder-pole-shaped steel beam and fixedly connected to the rectangular steel tube concrete column, and are also fastened to the shoulder-pole-shaped steel beam by high-strength bolts; four T-shaped patterned steel plates are respectively fixedly connected to the rectangular steel tube concrete column and the shoulder-pole-shaped steel beam, and the four ends of the damper are fastened to the steel bracket by high-strength bolts; two octagonal prefabricated reinforced concrete slabs are fastened to the front and rear sides of the damper and the T-shaped patterned steel plate by tension bolts. The composite shear wall has good seismic resistance, is easy to assemble and disassemble, is convenient to construct, and has a short construction period.

Description

Technical Field

[0001] The invention belongs to the field of building structures, and in particular relates to a multi-layered assembled steel-concrete composite shear wall and a construction method thereof. Background Art

[0002] With the development of modern science and technology, people have put forward higher requirements for the structure and function of buildings. The traditional cast-in-place reinforced concrete frame-shear structure has the following problems: 1) poor seismic performance; 2) complex construction process, requiring a lot of manpower and material resources; 3) long construction period, greatly affected by seasons and weather; 4) poor construction quality; 5) easy to be damaged by large and medium earthquakes, and difficult to repair after damage.

[0003] The components of the assembled composite structure can be prefabricated in the factory to ensure the standardization of the components, greatly improve work efficiency and processing quality, save resources and energy, and have better earthquake resistance. However, most of the current assembled structures are frame structures, which are only suitable for multi-story buildings. Due to their weak lateral stiffness, this type of structure is not suitable for super-high-rise buildings. Summary of the invention

[0004] The object of the present invention is to provide a multi-layered assembled steel-concrete composite shear wall and a construction method thereof. The composite shear wall has good earthquake resistance, is easy to assemble and disassemble, is convenient to construct, and has a short construction period.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a multi-layered assembled steel-concrete composite shear wall, including two octagonal prefabricated reinforced concrete slabs, a four-pointed star-shaped steel-constrained concrete damper, four T-shaped patterned steel plates, two rectangular steel tube concrete columns, two shoulder-pole-shaped steel beams and four groups of self-locking steel brackets; the two rectangular steel tube concrete columns are vertically arranged, and the spacing between the two rectangular steel tube concrete columns is adapted to the width of the octagonal prefabricated reinforced concrete slabs, the two shoulder-pole-shaped steel beams are horizontally arranged on the upper and lower sides between the two rectangular steel tube concrete columns, and the spacing between the two shoulder-pole-shaped steel beams is adapted to the height of the octagonal prefabricated reinforced concrete slabs; a group of self-locking steel brackets includes upper and lower two steel brackets The upper and lower steel brackets are clamped on the upper and lower sides of the end of the shoulder-pole-shaped steel beam and fixedly connected to the rectangular steel tube concrete column. The steel brackets are also fastened to the shoulder-pole-shaped steel beam by high-strength bolts; the four T-shaped patterned steel plates are respectively fixedly connected to the inner sides of the two rectangular steel tube concrete columns and the two shoulder-pole-shaped steel beams. The four-pointed star-shaped steel-constrained concrete damper is embedded in the internal space surrounded by the two rectangular steel tube concrete columns and the two shoulder-pole-shaped steel beams, and its four ends are respectively fastened to the steel brackets by high-strength bolts to form an X-shaped shock-absorbing and energy-dissipating structure; the two octagonal prefabricated reinforced concrete slabs are clamped on the front and rear sides of the four-pointed star-shaped steel-constrained concrete damper and the T-shaped patterned steel plate, and are fastened together by multiple tension bolts.

[0006] Furthermore, the T-shaped patterned steel plate is composed of a web and flanges vertically arranged at the bottom of the web and extending to both sides.

[0007] Furthermore, a damper groove adapted to the four-pointed star-shaped steel-constrained concrete damper and four flange grooves for inserting flanges are provided on one side surface of the octagonal prefabricated reinforced concrete slab facing the four-pointed star-shaped steel-constrained concrete damper and the T-shaped patterned steel plate; when the two octagonal prefabricated reinforced concrete slabs clamp the front and rear sides of the four-pointed star-shaped steel-constrained concrete damper and the T-shaped patterned steel plate, the four-pointed star-shaped steel-constrained concrete damper is embedded in the front and rear damper grooves to prevent the four-pointed star-shaped steel-constrained concrete damper from bending and local buckling, while the front and rear damper grooves clamp the flange of the T-shaped patterned steel plate to prevent the T-shaped patterned steel plate from being pulled out.

[0008] Furthermore, the octagonal prefabricated reinforced concrete slab is provided with 8 tension bolt holes, which are arranged in pairs on the upper, lower, left and right sides of the octagonal prefabricated reinforced concrete slab, and the web of the T-shaped patterned steel plate is correspondingly provided with through holes for passing the tension bolts. The tension bolts pass through the tension bolt holes on one side, the through holes on the web and the tension bolt holes on the other side in sequence, so as to fasten the two octagonal prefabricated reinforced concrete slabs to the front and rear sides of the T-shaped patterned steel plate.

[0009] Furthermore, the T-shaped patterned steel plate is made of low yield strength steel plate, and the web surface has a diamond-shaped staggered pattern with high friction. The T-shaped patterned steel plate is respectively connected to the rectangular steel tube concrete column and the shoulder pole steel beam by welding.

[0010] Furthermore, the four-pointed star-shaped steel-confined concrete damper adopts a steel tube concrete component, which is mainly composed of a stainless steel tube body with high fatigue strength and low buckling strength and fiber concrete with high tensile strength and elongation filled in the stainless steel tube body; the four ends of the four-pointed star-shaped steel-confined concrete damper, namely the upper left, lower left, upper right and lower right, are respectively provided with square end plates, and the square end plates are fastened to the steel corbels by high-strength bolts.

[0011] Furthermore, the upper and lower steel corbels of a set of self-locking steel corbels are welded to the rectangular steel tube concrete column at the same time, directly forming a mechanical bite force on the shoulder-pole-shaped steel beam between the two steel corbels.

[0012] The present invention also provides a construction method for the above-mentioned multi-layer fortified assembled steel-concrete composite shear wall, comprising the following steps:

[0013] (1) Determine the specific size of each prefabricated component according to the structural design requirements and the actual construction conditions on site; then produce the two octagonal prefabricated reinforced concrete slabs, a four-pointed star-shaped steel-confined concrete damper, four T-shaped patterned steel plates, two rectangular steel tube concrete columns, two shoulder-pole-shaped steel beams and four sets of self-locking steel brackets as required;

[0014] (2) First, weld four T-shaped patterned steel plates to the corresponding shoulder-pole steel beams and rectangular steel tube concrete columns, then weld four sets of self-locking steel brackets to the rectangular steel tube concrete columns, and then transport the prefabricated components to the construction site;

[0015] (3) Before hoisting the rectangular steel tube concrete column, a connecting ear plate is pre-installed at the segment. When installing the rectangular steel tube concrete column, a steel wire rope is used for hoisting. The hoisting point is the ear plate on the upper part of the rectangular steel tube concrete column, which is connected to the steel wire rope through a shackle and hoisted to the designated position;

[0016] (4) Before hoisting the shoulder-pole steel beam, clean the dirt on the surface of the shoulder-pole steel beam and remove the rust on the surface of the shoulder-pole steel beam; after the shoulder-pole steel beam is hoisted into place, align the bolt holes on the steel bracket with the bolt holes on the shoulder-pole steel beam and fasten them with high-strength bolts;

[0017] (5) Align the four ends of the four-pointed star-shaped steel confined concrete damper with the steel bracket and fasten them with high-strength bolts;

[0018] (6) Positioning wooden blocks are arranged around the location where each octagonal precast reinforced concrete slab is to be placed. After the octagonal precast reinforced concrete slab is hoisted into place, its damper groove and flange groove are aligned with the flange positions of the four-pointed star-shaped steel-confined concrete damper and the T-shaped patterned steel plate respectively. The tension bolts are passed through the octagonal precast reinforced concrete slab and the T-shaped patterned steel plate and tightened, thereby clamping the two octagonal precast reinforced concrete slabs on the front and rear sides of the four-pointed star-shaped steel-confined concrete damper and the T-shaped patterned steel plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) Convenient construction, good processing quality, time saving, detachable and replaceable. All components are prefabricated in the factory and connected by bolts on site, which can be easily installed and disassembled, so the construction speed is fast.

[0021] (2) Multiple connections are used between components, and the connections are reliable. The shoulder-pole-shaped steel beam can be inserted into the upper and lower steel brackets of the self-locking steel bracket from the side to directly form a mechanical bite force; at the same time, the shoulder-pole-shaped steel beam and the self-locking steel bracket are also connected by high-strength bolts. The flange of the T-shaped patterned steel plate and the flange groove of the octagonal precast reinforced concrete slab can also directly form a mechanical bite force; the T-shaped patterned steel plate and the octagonal precast reinforced concrete slab are also connected to the shear resistance by tension bolts; after the pre-tension force is applied to the tension bolts, a large friction force can also be formed between the web of the octagonal precast reinforced concrete slab and the T-shaped patterned steel plate.

[0022] (3) Good seismic performance. On the basis of the good energy dissipation capacity of the four-pointed star steel-confined concrete damper, the damper groove in the octagonal precast reinforced concrete slab limits the bending and local buckling of the stainless steel tube. Under the constraint of the octagonal precast reinforced concrete slab, the web of the T-shaped patterned steel plate is not prone to local buckling, which can ensure that the web absorbs as much seismic energy as possible.

[0023] (4) High shear bearing capacity. Placing the four-pointed star-shaped steel-confined concrete damper with high tensile bearing capacity in the diagonal direction of the shear wall can directly improve the overall shear bearing capacity of the wall. Due to the restraint of the octagonal precast reinforced concrete slab, the web of the T-shaped patterned steel plate is not prone to local buckling, which can improve the shear bearing capacity of the web.

[0024] (5) Good fireproof performance. The octagonal prefabricated reinforced concrete slab is used as the panel of the shear wall to isolate the four-pointed star-shaped steel-confined concrete damper and the T-shaped patterned steel plate from the fire source. Compared with the previous steel plate shear wall structure, its fireproof performance can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the external structure of the assembled steel-concrete composite shear wall according to an embodiment of the present invention.

[0026] Figure 2 It is a schematic diagram of the internal structure of the assembled steel-concrete composite shear wall according to an embodiment of the present invention.

[0027] Figure 3 It is a schematic structural diagram of an octagonal prefabricated reinforced concrete slab in an embodiment of the present invention.

[0028] Figure 4 It is a schematic diagram of the end connection structure of a four-pointed star-shaped steel-confined concrete damper in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] like Figure 1-4As shown, the present embodiment provides a multi-layered assembled steel-concrete composite shear wall, comprising two octagonal prefabricated reinforced concrete slabs 1, a four-pointed star-shaped steel-constrained concrete damper 3, four T-shaped patterned steel plates 6, two rectangular steel tube concrete columns 10, two shoulder-pole-shaped steel beams 9 and four groups of self-locking steel brackets 4; the two rectangular steel tube concrete columns 10 are vertically arranged, and the spacing between the two rectangular steel tube concrete columns 10 is adapted to the width of the octagonal prefabricated reinforced concrete slabs, the two shoulder-pole-shaped steel beams 9 are transversely arranged on the upper and lower sides between the two rectangular steel tube concrete columns 10, and the spacing between the two shoulder-pole-shaped steel beams 9 is adapted to the height of the octagonal prefabricated reinforced concrete slabs; a group of self-locking steel brackets 4 includes upper and lower steel brackets, and the upper and lower steel brackets are clamped at the ends of the shoulder-pole-shaped steel beams 9. The upper and lower sides are fixedly connected to the rectangular steel tube concrete column 10, and the steel bracket is also fastened to the shoulder-pole steel beam 9 by high-strength bolts 8; the four T-shaped patterned steel plates 6 are respectively fixedly connected to the inner sides of the two rectangular steel tube concrete columns 10 and the two shoulder-pole steel beams 9, and the four-pointed star-shaped steel constrained concrete damper 3 is embedded in the internal space surrounded by the two rectangular steel tube concrete columns 10 and the two shoulder-pole steel beams 9, and its four ends are respectively fastened to the steel bracket by high-strength bolts 8 to form an X-shaped shock-absorbing and energy-dissipating structure, which weakens the seismic response of the overall structure, reduces the cross-sectional size of the component, and has a significant effect in controlling the lateral displacement; the two octagonal prefabricated reinforced concrete slabs 1 are clamped between the front and rear sides of the four-pointed star-shaped steel constrained concrete damper 3 and the T-shaped patterned steel plate 6, and are fastened together by multiple tension bolts 7.

[0033] like Figure 2 As shown, the T-shaped patterned steel plate 6 is composed of a web 61 and flanges 62 vertically arranged at the bottom of the web 61 and extending to both sides.

[0034] like Figure 3 As shown, a damper groove 11 adapted to the four-pointed star-shaped steel-constrained concrete damper 3 and four flange grooves 12 for inserting the flange 62 are provided on one side of the octagonal prefabricated reinforced concrete slab 1 facing the four-pointed star-shaped steel-constrained concrete damper 3 and the T-shaped patterned steel plate 6; when the two octagonal prefabricated reinforced concrete slabs 1 clamp the front and rear sides of the four-pointed star-shaped steel-constrained concrete damper 3 and the T-shaped patterned steel plate 6, the four-pointed star-shaped steel-constrained concrete damper 3 is embedded in the front and rear damper grooves 11 to prevent the four-pointed star-shaped steel-constrained concrete damper 3 from bending and local buckling, and the front and rear damper grooves 11 clamp the flange 62 of the T-shaped patterned steel plate 6 to prevent the T-shaped patterned steel plate 6 from being pulled out. Specifically, the damper groove 11 is a corresponding groove reserved at the interface of the two prefabricated panels, the width and depth of the groove are slightly larger than the four-pointed star-shaped steel-constrained concrete damper 3, and the four-pointed star-shaped steel-constrained concrete damper 3 can be freely compressed and extended in the damper groove 11.

[0035] A gap is reserved between the octagonal prefabricated reinforced concrete slab 1 and the four-pointed star-shaped steel-confined concrete damper 3 to ensure that the four-pointed star-shaped steel-confined concrete damper 3 can produce a certain elastic deformation when subjected to an earthquake to absorb earthquake energy.

[0036] The octagonal prefabricated reinforced concrete slab 1 is provided with 8 tension bolt holes, arranged in pairs on the upper, lower, left and right sides of the octagonal prefabricated reinforced concrete slab 1. The web 61 of the T-shaped patterned steel plate 6 is provided with corresponding through holes for passing the tension bolts. For easy installation, the through hole size is much larger than the tension bolt size. The tension bolts 7 pass through the tension bolt holes on one side, the through holes on the web and the tension bolt holes on the other side in sequence, and fasten the two octagonal prefabricated reinforced concrete slabs 1 to the front and rear sides of the T-shaped patterned steel plate 6.

[0037] In this embodiment, the T-shaped patterned steel plate 6 is made of low yield strength steel plate, and the surface of the web 61 has a diamond-shaped staggered pattern with high friction. The T-shaped patterned steel plate 6 is connected to the rectangular steel tube concrete column 10 and the shoulder-pole steel beam 9 by welding.

[0038] In this embodiment, the four-pointed star steel-confined concrete damper 3 adopts a steel tube concrete component, which is mainly composed of a stainless steel tube body with high fatigue strength and low buckling strength and a fiber concrete filled in the stainless steel tube body with high tensile strength and elongation and good ductility. Since the friction between the stainless steel tube and the concrete slab is relatively small, it can be ensured that the four-pointed star steel-confined concrete damper 3 only undergoes axial elongation or compression deformation along the entire length of the wall diagonal, and its deformation is relatively large, so as to absorb as much earthquake energy as possible. Figure 4 As shown, the four ends of the four-pointed star-shaped steel-confined concrete damper 3, namely the upper left, lower left, upper right and lower right, are respectively provided with square end plates 31, and the square end plates 31 are fastened to the steel brackets by high-strength bolts 8.

[0039] The upper and lower steel corbels of a set of self-locking steel corbels 4 are welded to the rectangular steel tube concrete column 10 at the same time, directly forming a mechanical bite force on the shoulder-pole steel beam 9 between the two steel corbels; at the same time, the shoulder-pole steel beam 9 and the self-locking steel corbels 4 are also connected by high-strength bolts 8. The flange of the T-shaped patterned steel plate 6 and the flange groove of the octagonal precast reinforced concrete slab 1 can also directly form a mechanical bite force; the T-shaped patterned steel plate 6 and the octagonal precast reinforced concrete slab 1 are also connected to each other with tension bolts 7 for shear resistance; after applying pre-tension to the tension bolts, a large friction force can also be formed between the webs of the octagonal precast reinforced concrete slab 1 and the T-shaped patterned steel plate 6, so that the octagonal precast reinforced concrete slab 1 and the T-shaped patterned steel plate 6 can jointly resist the shear force.

[0040] This embodiment also provides a construction method for the above-mentioned multi-layer fortified assembled steel-concrete composite shear wall, comprising the following steps:

[0041] (1) According to the structural design requirements and in combination with the actual construction conditions on site, the specific dimensions of each prefabricated component are determined; then, the two octagonal prefabricated reinforced concrete slabs 1, a four-pointed star-shaped steel confined concrete damper 3, four T-shaped patterned steel plates 6, two rectangular steel tube concrete columns 10, two shoulder pole-shaped steel beams 9 and four sets of self-locking steel brackets 4 are produced as required.

[0042] (2) First, four T-shaped patterned steel plates 6 are welded to the corresponding shoulder-pole steel beams 9 and rectangular steel tube concrete columns 10, respectively, and then four sets of self-locking steel brackets 4 are welded to the rectangular steel tube concrete columns 10. Then, the prefabricated components are transported to the construction site.

[0043] (3) Before hoisting the rectangular steel tube concrete column 10, connecting ear plates are pre-installed at the sections. When the rectangular steel tube concrete column 10 is installed, it is hoisted and lifted by a steel wire rope. The lifting point is the ear plate on the upper part of the rectangular steel tube concrete column 10, which is connected to the steel wire rope through a shackle and hoisted to the designated position.

[0044] (4) Before hoisting the shoulder-pole steel beam 9, clean the dirt on the surface of the shoulder-pole steel beam and remove the rust on the surface of the shoulder-pole steel beam; after the shoulder-pole steel beam 9 is hoisted into place, put it in place according to the construction drawing, and pay attention to the direction of the shoulder-pole steel beam 9; when the shoulder-pole steel beam 9 is in place, first align the bolt holes on the steel corbel with the bolt holes on the shoulder-pole steel beam 9 and use high-strength bolts 8 to tighten the connection.

[0045] (5) Align the four ends of the four-pointed star-shaped steel-confined concrete damper 3 with the steel bracket and fasten them with high-strength bolts 8, completing the connection of the four corners from top to bottom and from left to right.

[0046] (6) Positioning wood blocks are arranged around the location where each octagonal precast reinforced concrete slab 1 is to be placed. After the octagonal precast reinforced concrete slab 1 is hoisted into place, its damper groove 11 and flange groove 12 are aligned with the flange 62 of the four-pointed star-shaped steel-confined concrete damper 3 and the T-shaped patterned steel plate 6, respectively. The tension bolts 7 are passed through the octagonal precast reinforced concrete slab 1 and the T-shaped patterned steel plate 6 and tightened, so that the two octagonal precast reinforced concrete slabs 1 are clamped on the front and rear sides of the four-pointed star-shaped steel-confined concrete damper 3 and the T-shaped patterned steel plate 6.

[0047] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A multi-layered assembled steel-concrete composite shear wall, characterized in that: It includes two octagonal prefabricated reinforced concrete slabs, a four-pointed star-shaped steel-constrained concrete damper, four T-shaped patterned steel plates, two rectangular steel tube concrete columns, two shoulder-pole-shaped steel beams and four groups of self-locking steel brackets; the two rectangular steel tube concrete columns are vertically arranged, and the spacing between the two rectangular steel tube concrete columns is adapted to the width of the octagonal prefabricated reinforced concrete slabs, the two shoulder-pole-shaped steel beams are transversely arranged on the upper and lower sides between the two rectangular steel tube concrete columns, and the spacing between the two shoulder-pole-shaped steel beams is adapted to the height of the octagonal prefabricated reinforced concrete slabs; a group of self-locking steel brackets includes upper and lower steel brackets, and the upper and lower steel brackets are clamped on the upper end of the shoulder-pole-shaped steel beam. , and the lower two sides are fixedly connected to the rectangular steel tube concrete columns, and the steel corbels are also fastened to the pole-shaped steel beams by high-strength bolts; the four T-shaped patterned steel plates are respectively fixedly connected to the inner sides of the two rectangular steel tube concrete columns and the two pole-shaped steel beams, and the four-pointed star-shaped steel-constrained concrete damper is embedded in the internal space surrounded by the two rectangular steel tube concrete columns and the two pole-shaped steel beams, and its four ends are respectively fastened to the steel corbels by high-strength bolts to form an X-shaped shock-absorbing and energy-dissipating structure; the two octagonal prefabricated reinforced concrete slabs are clamped on the front and rear sides of the four-pointed star-shaped steel-constrained concrete damper and the T-shaped patterned steel plates, and are fastened together by a plurality of tension bolts; The T-shaped patterned steel plate is composed of a web and flanges vertically arranged at the bottom of the web and extending to both sides; A damper groove adapted to the four-pointed star-shaped steel-constrained concrete damper and four flange grooves for inserting flanges are arranged on one side surface of the octagonal prefabricated reinforced concrete slab facing the four-pointed star-shaped steel-constrained concrete damper and the T-shaped patterned steel plate; when two octagonal prefabricated reinforced concrete slabs clamp the front and rear sides of the four-pointed star-shaped steel-constrained concrete damper and the T-shaped patterned steel plate, the four-pointed star-shaped steel-constrained concrete damper is embedded in the front and rear damper grooves to prevent the four-pointed star-shaped steel-constrained concrete damper from bending and local buckling, while the front and rear damper grooves clamp the flange of the T-shaped patterned steel plate to prevent the T-shaped patterned steel plate from being pulled out.

2. The multi-layered assembled steel-concrete composite shear wall according to claim 1 is characterized in that: The octagonal prefabricated reinforced concrete slab is provided with 8 tension bolt holes, which are arranged in pairs on the upper, lower, left and right sides of the octagonal prefabricated reinforced concrete slab. The web of the T-shaped patterned steel plate is correspondingly provided with through holes for passing the tension bolts. The tension bolts pass through the tension bolt holes on one side, the through holes on the web and the tension bolt holes on the other side in sequence, and the two octagonal prefabricated reinforced concrete slabs are fastened to the front and rear sides of the T-shaped patterned steel plate.

3. The multi-layered assembled steel-concrete composite shear wall according to claim 1 is characterized in that: The T-shaped patterned steel plate is a low yield strength steel plate, and the web surface has a diamond-shaped staggered pattern with high friction. The T-shaped patterned steel plate is respectively connected to the rectangular steel tube concrete column and the shoulder pole steel beam by welding.

4. The multi-layered assembled steel-concrete composite shear wall according to claim 1 is characterized in that: The four-pointed star-shaped steel-confined concrete damper adopts a steel tube concrete component, which is mainly composed of a stainless steel tube body with high fatigue strength and low buckling strength and fiber concrete with high tensile strength and elongation filled in the stainless steel tube body; the four ends of the four-pointed star-shaped steel-confined concrete damper, namely the upper left, lower left, upper right and lower right, are respectively provided with square end plates, and the square end plates are fastened to the steel bracket by high-strength bolts.

5. The multi-layered assembled steel-concrete composite shear wall according to claim 1 is characterized in that: The upper and lower steel brackets of a set of self-locking steel brackets are welded to the rectangular steel tube concrete column at the same time, directly forming a mechanical bite force on the shoulder-shaped steel beam between the two steel brackets.

6. The construction method of the multi-layer fortified assembled steel-concrete composite shear wall according to any one of claims 1 to 5, characterized in that: The following steps are involved: (1) According to the structural design requirements and in combination with the actual construction conditions on site, the specific dimensions of each prefabricated component are determined; then, the two octagonal prefabricated reinforced concrete slabs, a four-pointed star-shaped steel-confined concrete damper, four T-shaped patterned steel plates, two rectangular steel tube concrete columns, two shoulder pole-shaped steel beams and four sets of self-locking steel brackets are produced as required; (2) First, four T-shaped patterned steel plates are welded to the corresponding shoulder-pole steel beams and rectangular steel tube concrete columns, and then four sets of self-locking steel brackets are welded to the rectangular steel tube concrete columns. Then, the prefabricated components are transported to the construction site; (3) Before hoisting the rectangular steel tube concrete column, a connecting ear plate is pre-installed at the segment. When installing the rectangular steel tube concrete column, a steel wire rope is used for hoisting. The hoisting point is the ear plate on the upper part of the rectangular steel tube concrete column, which is connected to the steel wire rope through a shackle and hoisted to the designated position; (4) Before hoisting the shoulder-pole steel beam, clean the dirt on the surface of the shoulder-pole steel beam and remove the rust on the surface of the shoulder-pole steel beam; after the shoulder-pole steel beam is hoisted into place, align the bolt holes on the steel bracket with the bolt holes on the shoulder-pole steel beam and fasten them with high-strength bolts; (5) Align the four ends of the four-pointed star-shaped steel confined concrete damper with the steel bracket and fasten them with high-strength bolts; (6) Positioning wooden blocks are arranged around the location where each octagonal precast reinforced concrete slab is to be placed. After the octagonal precast reinforced concrete slab is hoisted into place, its damper groove and flange groove are aligned with the flange positions of the four-pointed star-shaped steel-confined concrete damper and the T-shaped patterned steel plate, respectively. The tension bolts are passed through the octagonal precast reinforced concrete slab and the T-shaped patterned steel plate and tightened, thereby clamping the two octagonal precast reinforced concrete slabs on the front and rear sides of the four-pointed star-shaped steel-confined concrete damper and the T-shaped patterned steel plate.

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