An assembled steel plate shear wall system with two seismic lines of defense

Abstract

The present invention discloses an assembled steel plate shear wall system with two seismic defense lines, which relates to the field of structural engineering. The technical solution of the present invention is as follows: two double-limbed cap-shaped cold-bent thin-walled steel columns or two cold-bent thin-walled steel columns with welded closed ends at the extended ends are connected with two cold-bent thin-walled steel beams to form a rectangular frame, and a plurality of self-tapping screws are used to fix the embedded steel plate in the rectangular frame, and an X-shaped inclined steel belt group or a prefabricated mortar board with decorative steel bars is installed on both sides of the rectangular frame. The structure of the present invention has high lateral stiffness, provides two seismic defense lines, has extremely strong seismic energy absorption performance and excellent seismic resistance, adopts self-tapping screws or bolts for connection, and is prefabricated and assembled for construction, which is convenient and fast, and has broad application prospects in the fields of seismic resistance of multi-story steel structure buildings and industrialized prefabricated structures.

Description

Technical Field

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

[0002] Cold-formed thin-walled steel structure is a new type of structural system widely used in Europe and the United States. Because the cold-formed thin-walled structure is easy to process in the factory, can be assembled and installed on site, has a short construction period, steel can be recycled, and has good economic benefits, it conforms to the design concept of green buildings and has great application prospects in multi-story residential building systems.

[0003] Under the action of large load, the embedded steel plate of the existing steel plate shear wall is destroyed first, and then the frame beam or the connection node between the frame beam and the frame column is destroyed, and finally the frame column is destroyed. Under this destruction mode, the destruction of the connection node between the frame beam and the frame column and the frame beam has great uncertainty, and the connection node between the frame beam and the frame column is often destroyed first. Its lateral force resistance and energy consumption performance are insufficient, which seriously affects the reliability, safety and service life of the entire steel plate shear wall structure. Most steel plate shear walls are prone to local buckling under the action of lateral force due to their large width and thickness, and will produce tension bands, and the workload of on-site welding is large.

[0004] Therefore, there is an urgent need to develop a new type of assembled steel plate shear wall system that can solve the above problems. Summary of the invention

[0005] The purpose of the invention is to provide a prefabricated steel plate shear wall system with two earthquake-resistant lines.

[0006] The technical solution adopted to achieve the purpose of the present invention is as follows: an assembled steel plate shear wall system with two seismic defense lines includes double-legged cap-shaped cold-bent thin-walled steel columns, embedded steel plates, cold-bent thin-walled steel beams and cable-stayed steel strips.

[0007] The double-limbed cap-shaped cold-bent thin-walled steel column comprises two outer curled channel steels. The cold-bent thin-walled steel beam comprises two cold-bent thin-walled special-shaped steels, and the cross-section of the cold-bent thin-walled special-shaped steels is L-shaped.

[0008] The embedded steel plate is a vertically arranged rectangular plate, and two external curled channel steels and two cold-bent thin-walled special-shaped steels are arranged on each side of the embedded steel plate. The two external curled channel steels on each side are respectively located at the two vertical edges of the embedded steel plate, and the two cold-bent thin-walled special-shaped steels on each side are respectively located at the two horizontal edges of the embedded steel plate.

[0009] The outer curled edge channel steel notches on both sides of the embedded steel plate are opposite, and a number of self-tapping screws are driven into the inner steel plate and the curled edges of the outer curled edge channel steels on both sides thereof. The two outer curled edge channel steels with opposite notches are spliced ​​to form a double-limb spliced ​​hat-shaped cold-bent thin-walled steel column.

[0010] The cold-bent thin-walled special-shaped steel comprises a vertically connected steel plate I and a steel plate II, both of which are provided with inner curling edges, the outer surface of the steel plate I is in contact with the plate surface of the embedded steel plate, and the outer surface of the steel plate II is flush with the horizontal edge of the embedded steel plate. A number of the self-tapping screws are driven into the embedded steel plate and the steel plates I on both sides thereof, and the cold-bent thin-walled special-shaped steel on both sides of the embedded steel plate are spliced ​​to form a cold-bent thin-walled steel beam.

[0011] The two double-limbed cap-shaped cold-bent thin-walled steel columns and two cold-bent thin-walled steel beams are connected to form a steel frame. Two groups of bolt holes are arranged on the side of the double-limbed cap-shaped cold-bent thin-walled steel column facing the cold-bent thin-walled steel beam, and the two groups of bolt holes are respectively located at the upper and lower ends of the double-limbed cap-shaped cold-bent thin-walled steel column. Both ends of the cold-bent thin-walled steel beam are provided with a plurality of bolt holes.

[0012] The embedded steel plate is provided with a plurality of bolt holes at each junction of the double-limb spliced ​​cap-shaped cold-bent thin-walled steel column and the cold-bent thin-walled steel beam.

[0013] Two cold-bent thin-walled connectors are provided at each junction of the double-limbed cap-shaped cold-bent thin-walled steel column and the cold-bent thin-walled steel beam, and the two cold-bent thin-walled connectors are respectively located on both sides of the double-limbed cap-shaped cold-bent thin-walled steel column and the cold-bent thin-walled steel beam. A plurality of bolt holes are provided on the cold-bent thin-walled connector, and the double-limbed cap-shaped cold-bent thin-walled steel column, the embedded steel plate, the cold-bent thin-walled steel beam and the cold-bent thin-walled connector are connected by bolts.

[0014] Each side of the steel frame is provided with four node plates, which are respectively located at the four corners of the steel frame. Each node plate is simultaneously fitted with the double-limbed cap-shaped cold-formed thin-walled steel column and the inner curling edge of the steel plate II, and a number of self-tapping screws are driven into the node plate, the double-limbed cap-shaped cold-formed thin-walled steel column and the inner curling edge of the steel plate II.

[0015] A diagonal steel belt group is provided on each side of the steel frame, and the diagonal steel belt group includes two diagonal steel belts arranged in an X shape. The four end plates of the diagonal steel belt group are respectively fitted with four node plates on the same side, and a number of self-tapping screws are driven into the diagonal steel belts and the node plates.

[0016] Each of the double-limbed hat-shaped cold-bent thin-walled steel columns has two column foot anti-pullout connectors at the upper and lower ends of the side walls facing away from the other double-limbed hat-shaped cold-bent thin-walled steel column, and a number of self-tapping screws are driven into the column foot anti-pullout connectors and the double-limbed hat-shaped cold-bent thin-walled steel columns.

[0017] The invention discloses an assembled steel plate shear wall system with two seismic defense lines, comprising a double-legged cap-shaped cold-bent thin-walled steel column, an embedded steel plate, a cold-bent thin-walled steel beam and a prefabricated mortar board with decorative steel bars.

[0018] The double-limbed cap-shaped cold-bent thin-walled steel column comprises two outer curled channel steels. The cold-bent thin-walled steel beam comprises two cold-bent thin-walled special-shaped steels, and the cross-section of the cold-bent thin-walled special-shaped steels is L-shaped.

[0019] The embedded steel plate is a vertically arranged rectangular plate, and two external curled channel steels and two cold-bent thin-walled special-shaped steels are arranged on each side of the embedded steel plate. The two external curled channel steels on each side are respectively located at the two vertical edges of the embedded steel plate, and the two cold-bent thin-walled special-shaped steels on each side are respectively located at the two horizontal edges of the embedded steel plate.

[0020] The outer curled edge channel steel notches on both sides of the embedded steel plate are opposite, and a number of self-tapping screws are driven into the inner steel plate and the curled edges of the outer curled edge channel steels on both sides thereof. The two outer curled edge channel steels with opposite notches are spliced ​​to form a double-limb spliced ​​hat-shaped cold-bent thin-walled steel column.

[0021] The cold-bent thin-walled special-shaped steel comprises a vertically connected steel plate I and a steel plate II, both of which are provided with inner curling edges, the outer surface of the steel plate I is in contact with the plate surface of the embedded steel plate, and the outer surface of the steel plate II is flush with the horizontal edge of the embedded steel plate. A number of the self-tapping screws are driven into the embedded steel plate and the steel plates I on both sides thereof, and the cold-bent thin-walled special-shaped steel on both sides of the embedded steel plate are spliced ​​to form a cold-bent thin-walled steel beam.

[0022] The two double-limbed cap-shaped cold-bent thin-walled steel columns and two cold-bent thin-walled steel beams are connected to form a steel frame. Two groups of bolt holes are arranged on the side of the double-limbed cap-shaped cold-bent thin-walled steel column facing the cold-bent thin-walled steel beam, and the two groups of bolt holes are respectively located at the upper and lower ends of the double-limbed cap-shaped cold-bent thin-walled steel column. Both ends of the cold-bent thin-walled steel beam are provided with a plurality of bolt holes.

[0023] The embedded steel plate is provided with a plurality of bolt holes at each junction of the double-limb spliced ​​cap-shaped cold-bent thin-walled steel column and the cold-bent thin-walled steel beam.

[0024] Two cold-bent thin-walled connectors are provided at each junction of the double-limbed cap-shaped cold-bent thin-walled steel column and the cold-bent thin-walled steel beam, and the two cold-bent thin-walled connectors are respectively located on both sides of the double-limbed cap-shaped cold-bent thin-walled steel column and the cold-bent thin-walled steel beam. A plurality of bolt holes are provided on the cold-bent thin-walled connector, and the double-limbed cap-shaped cold-bent thin-walled steel column, the embedded steel plate, the cold-bent thin-walled steel beam and the cold-bent thin-walled connector are connected by bolts.

[0025] Prefabricated mortar boards with decorative steel bars are arranged on both sides of the steel frame. The prefabricated mortar boards with decorative steel bars are rectangular boards. Each prefabricated mortar board with decorative steel bars is simultaneously fitted with two double-limbed cap-shaped cold-bent thin-walled steel columns. A number of self-tapping screws are driven into the prefabricated mortar boards with decorative steel bars and the double-limbed cap-shaped cold-bent thin-walled steel columns.

[0026] Each of the double-limbed hat-shaped cold-formed thin-walled steel columns has two column base anti-pullout connectors at the upper and lower ends of the side wall facing away from the other double-limbed hat-shaped cold-formed thin-walled steel column, and a number of self-tapping screws are driven into the column base anti-pullout connectors and the double-limbed hat-shaped cold-formed thin-walled steel columns.

[0027] A prefabricated steel plate shear wall system with two seismic defense lines comprises cold-bent thin-walled steel columns with welded closed ends at extended ends, embedded steel plates, cold-bent thin-walled steel beams and diagonal steel belts.

[0028] The welded closed cold-bent thin-walled steel column with an extended end comprises a square steel column and a welded steel plate. The two square steel columns are arranged at an interval. The side wall of each square steel column facing the other square steel column is connected with a welded steel plate, and the two welded steel plates are on the same vertical plane.

[0029] There is a vertically arranged embedded steel plate between the two square steel columns. The embedded steel plate is a rectangular plate. The embedded steel plate is located on the same side of the welded steel plates of the two square steel columns, and the two vertical edges of the embedded steel plate are both in contact with the welded steel plates of the two square steel columns.

[0030] A plurality of self-tapping screws are driven into the welded steel plates and the embedded steel plates.

[0031] The cold-bent thin-walled steel beam comprises two cold-bent thin-walled special-shaped steels, and the cross-section of the cold-bent thin-walled special-shaped steels is L-shaped.

[0032] Cold-bent thin-walled special-shaped steels are arranged at the upper and lower ends of each side of the embedded steel plate, and the two cold-bent thin-walled special-shaped steels are respectively located at the two horizontal edges of the embedded steel plate.

[0033] The cold-bent thin-walled special-shaped steel comprises a vertically connected steel plate I and a steel plate II, both of which are provided with inner curling edges, the outer surface of the steel plate I is in contact with the plate surface of the embedded steel plate, and the outer surface of the steel plate II is flush with the horizontal edge of the embedded steel plate. A number of the self-tapping screws are driven into the middle section of the steel plate I and the embedded steel plate, and every two cold-bent thin-walled special-shaped steels are spliced ​​to form a cold-bent thin-walled steel beam.

[0034] Two cold-bent thin-walled connectors are provided at the corners of the embedded steel plates, and the two cold-bent thin-walled connectors are respectively located on both sides of the embedded steel plates. The cold-bent thin-walled connectors are provided with a plurality of bolt holes, and a plurality of bolts pass through the welded steel plates, the embedded steel plates, the steel plates I on the cold-bent thin-walled special-shaped steels, and the bolt holes on the cold-bent thin-walled connectors. Each bolt is screwed into a nut to connect the two cold-bent thin-walled steel columns with extended ends welded and closed and the two cold-bent thin-walled steel beams to form a steel frame.

[0035] Each side of the steel frame is provided with four node plates, which are respectively located at the four corners of the steel frame. Each node plate is simultaneously fitted with the cold-formed thin-walled steel column with a protruding end welded closed and the inner curling edge of the steel plate II, and a number of self-tapping screws are driven into the node plate, the cold-formed thin-walled steel column with a protruding end welded closed and the inner curling edge of the steel plate II.

[0036] A diagonal steel belt group is provided on each side of the steel frame, and the diagonal steel belt group includes two diagonal steel belts arranged in an X shape. The four end plates of the diagonal steel belt group are respectively fitted with four node plates on the same side, and a number of self-tapping screws are driven into the diagonal steel belts and the node plates.

[0037] Each of the side walls of the welded closed cold-bent thin-walled steel column with an extended end facing away from the other welded closed cold-bent thin-walled steel column with an extended end is provided with two column base anti-pullout connectors, and a number of self-tapping screws are driven into the column base anti-pullout connectors and the welded closed cold-bent thin-walled steel column with an extended end.

[0038] A prefabricated steel plate shear wall system with two seismic defense lines comprises cold-bent thin-walled steel columns with welded closed ends at extended ends, embedded steel plates, cold-bent thin-walled steel beams and prefabricated mortar boards with decorative steel bars.

[0039] The welded closed cold-bent thin-walled steel column with an extended end comprises a square steel column and a welded steel plate. The two square steel columns are arranged at an interval. The side wall of each square steel column facing the other square steel column is connected with a welded steel plate, and the two welded steel plates are on the same vertical plane.

[0040] There is a vertically arranged embedded steel plate between the two square steel columns. The embedded steel plate is a rectangular plate. The embedded steel plate is located on the same side of the welded steel plates of the two square steel columns, and the two vertical edges of the embedded steel plate are both in contact with the welded steel plates of the two square steel columns.

[0041] A plurality of self-tapping screws are driven into the welded steel plates and the embedded steel plates.

[0042] The cold-bent thin-walled steel beam comprises two cold-bent thin-walled special-shaped steels, and the cross-section of the cold-bent thin-walled special-shaped steels is L-shaped.

[0043] Cold-bent thin-walled special-shaped steels are arranged at the upper and lower ends of each side of the embedded steel plate, and the two cold-bent thin-walled special-shaped steels are respectively located at the two horizontal edges of the embedded steel plate.

[0044] The cold-bent thin-walled special-shaped steel comprises a vertically connected steel plate I and a steel plate II, both of which are provided with inner curling edges, the outer surface of the steel plate I is in contact with the plate surface of the embedded steel plate, and the outer surface of the steel plate II is flush with the horizontal edge of the embedded steel plate. A number of the self-tapping screws are driven into the middle section of the steel plate I and the embedded steel plate, and every two cold-bent thin-walled special-shaped steels are spliced ​​to form a cold-bent thin-walled steel beam.

[0045] Two cold-bent thin-walled connectors are provided at the corners of the embedded steel plates, and the two cold-bent thin-walled connectors are respectively located on both sides of the embedded steel plates. The cold-bent thin-walled connectors are provided with a plurality of bolt holes, and a plurality of bolts pass through the welded steel plates, the embedded steel plates, the steel plates I on the cold-bent thin-walled special-shaped steels, and the bolt holes on the cold-bent thin-walled connectors. Each bolt is screwed into a nut to connect the two cold-bent thin-walled steel columns with extended ends welded and closed and the two cold-bent thin-walled steel beams to form a steel frame.

[0046] Prefabricated mortar boards with decorative steel bars are arranged on both sides of the steel frame. The prefabricated mortar boards with decorative steel bars are rectangular boards. Each prefabricated mortar board with decorative steel bars is simultaneously fitted with two welded closed cold-bent thin-walled steel columns with extended ends, and a number of self-tapping screws are driven into the prefabricated mortar boards with decorative steel bars and the welded closed cold-bent thin-walled steel columns with extended ends.

[0047] Each of the side walls of the welded closed cold-bent thin-walled steel column with an extended end facing away from the other welded closed cold-bent thin-walled steel column with an extended end is provided with two column base anti-pullout connectors at the upper and lower ends, and a number of self-tapping screws are driven into the column base anti-pullout connectors and the welded closed cold-bent thin-walled steel column with an extended end.

[0048] The beneficial effects of the present invention are:

[0049] 1. The overall structure of the present invention is prefabricated in the factory and assembled on site. The whole installation process is connected by self-tapping screws or bolts, without welding operations, which is convenient, efficient, green and environmentally friendly;

[0050] 2. The structure of the present invention uses an embedded steel plate as the first line of defense against lateral forces, and uses a cable-stayed steel belt or a prefabricated mortar board with decorative steel bars as the second line of defense against lateral forces, thereby improving the lateral stiffness of the structure, consuming earthquake energy, realizing multi-line defense, improving the seismic performance of the structure, and avoiding structural collapse;

[0051] 3. The prefabricated mortar board with decorative steel bars of the present invention integrates structural, architectural and decorative functions, realizes the purpose of one board for multiple uses, shortens the construction time and saves construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the double-limbed cap-shaped cold-bent thin-walled steel column and the inclined steel belt adopted in the present invention;

[0053] Figure 2 for Figure 1 A front view of

[0054] Figure 3 for Figure 2 Middle AA section view;

[0055] Figure 4 for Figure 2 Middle BB section view;

[0056] Figure 5 It is a schematic diagram of the double-limbed cap-shaped cold-bent thin-walled steel column and the prefabricated mortar board with decorative steel bars used in the present invention;

[0057] Figure 6 for Figure 5 A front view of

[0058] Figure 7 for Figure 6 Middle CC section view;

[0059] Figure 8 for Figure 6 Middle DD section view;

[0060] Fig. 9 It is a schematic diagram of the present invention using a cold-bent thin-walled steel column with a welded closed end and a diagonal steel belt;

[0061] Fig.10 for Fig. 9 A front view of

[0062] Fig.11 for Fig.10 Middle EE section view;

[0063] Fig.12 for Fig.10 Middle FF section view;

[0064] Fig.13 It is a schematic diagram of the present invention using a cold-bent thin-walled steel column with welded closed ends and a prefabricated mortar board with decorative steel bars;

[0065] Fig.14 for Fig.13 A front view of

[0066] Fig.15 for Fig.14 Middle GG section view;

[0067] Fig.16 for Fig.14 Middle HH section view;

[0068] Fig.17 This is a schematic diagram of the outer edge channel steel;

[0069] Fig.18 It is a schematic diagram of a cold-bent thin-walled steel column with welded closed ends at the extended ends;

[0070] Fig.19 This is the cross-sectional view of a cold-formed thin-walled steel column with welded closed ends at the extended ends;

[0071] Fig. 20 This is a schematic diagram of cold-bent thin-walled special-shaped steel;

[0072] Fig.21 Schematic diagram of the column base anti-pullout connector.

[0073] In the figure: double-legged cap-shaped cold-formed thin-walled steel column 1, external curled channel steel 101, embedded steel plate 2, cold-formed thin-walled steel beam 3, cold-formed thin-walled special-shaped steel 301, steel plate I 3011, steel plate II 3012, cold-formed thin-walled connector 4, self-tapping screws 5, bolts 6, column base anti-pullout connector 7, node plate 8, inclined steel strip 9, prefabricated mortar board with decorative steel bars 10, cold-formed thin-walled steel column with welded closed end at protruding end 11, square steel column 1101 and welded steel plate 1102. DETAILED DESCRIPTION

[0074] The present invention is further described below in conjunction with the embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to the common technical knowledge and customary means in the art, which should all be included in the protection scope of the present invention.

[0075] Embodiment 1:

[0076] See also Figure 1 This embodiment discloses an assembled steel plate shear wall system with two seismic defense lines, including a double-legged cap-shaped cold-bent thin-walled steel column 1, an embedded steel plate 2, a cold-bent thin-walled steel beam 3 and a diagonal steel belt 9.

[0077] The double-legged hat-shaped cold-bent thin-walled steel column 1 comprises two outer curled channel steels 101, see Fig.17 , which is a schematic diagram of the outer curling channel steel 101. The cold-bent thin-walled steel beam 3 includes two cold-bent thin-walled special-shaped steels 301, see Fig. 20 The cross section of cold-bent thin-walled special-shaped steel 301 is L-shaped.

[0078] See also Figure 2The embedded steel plate 2 is a vertically arranged rectangular plate, and two outer curled channel steels 101 and two cold-bent thin-walled special-shaped steels 301 are arranged on each side of the embedded steel plate 2. The two outer curled channel steels 101 on each side are respectively located at the two vertical edges of the embedded steel plate 2, and the two cold-bent thin-walled special-shaped steels 301 on each side are respectively located at the two horizontal edges of the embedded steel plate 2.

[0079] See also Figure 3 The grooves of the outer curled channel steels 101 on both sides of the embedded steel plate 2 are opposite, and a number of self-tapping screws 5 are driven into the curled edges of the embedded steel plate 2 and the outer curled channel steels 101 on both sides thereof. The two outer curled channel steels 101 with opposite grooves are spliced ​​to form a double-limb spliced ​​hat-shaped cold-bent thin-walled steel column 1.

[0080] See also Fig. 20 The cold-bent thin-walled special-shaped steel 301 includes a vertically connected steel plate I 3011 and a steel plate II 3012. Both the steel plates I 3011 and II 3012 are provided with inner curling edges. The outer surface of the steel plate I 3011 is in contact with the plate surface of the embedded steel plate 2, and the outer surface of the steel plate II 3012 is flush with the horizontal edge of the embedded steel plate 2. A number of the self-tapping screws 5 are driven into the embedded steel plate 2 and the steel plates I 3011 on both sides thereof, and the cold-bent thin-walled special-shaped steel 301 on both sides of the embedded steel plate 2 are spliced ​​to form a cold-bent thin-walled steel beam 3.

[0081] See also Figure 1 Or 2, two of the double-limbed cap-shaped cold-formed thin-walled steel columns 1 and two cold-formed thin-walled steel beams 3 are connected to form a steel frame. Two groups of bolt holes are arranged on the side of the double-limbed cap-shaped cold-formed thin-walled steel column 1 facing the cold-formed thin-walled steel beam 3, and the two groups of bolt holes are respectively located at the upper and lower ends of the double-limbed cap-shaped cold-formed thin-walled steel column 1. Both ends of the cold-formed thin-walled steel beam 3 are provided with a plurality of bolt holes.

[0082] The embedded steel plate 2 is provided with a plurality of bolt holes at each junction of the double-limbed cap-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3 .

[0083] See also Figure 3 Or 4, two cold-bent thin-walled connectors 4 are arranged at each junction of the double-limbed cap-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3, and the two cold-bent thin-walled connectors 4 are respectively located on both sides of the double-limbed cap-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3. A plurality of bolt holes are arranged on the cold-bent thin-walled connector 4, and a plurality of bolts 6 pass through the bolt holes on the double-limbed cap-shaped cold-bent thin-walled steel column 1, the embedded steel plate 2, the cold-bent thin-walled steel beam 3 and the cold-bent thin-walled connector 4, and each bolt 6 is screwed into a nut.

[0084] See also Figure 1Or 2, four node plates 8 are arranged on each side of the steel frame, and the four node plates 8 are respectively located at the four corners of the steel frame. Each node plate 8 is simultaneously fitted with the inner curling edge of the double-limbed cap-shaped cold-formed thin-walled steel column 1 and the steel plate II3012, and a plurality of self-tapping screws 5 are driven into the node plate 8, the double-limbed cap-shaped cold-formed thin-walled steel column 1 and the inner curling edge of the steel plate II3012.

[0085] A diagonal steel belt group is provided on each side of the steel frame, and the diagonal steel belt group includes two diagonal steel belts 9 arranged in an X shape. The four end plates of the diagonal steel belt group are respectively fitted with four node plates 8 on the same side, and a number of self-tapping screws 5 are driven into the diagonal steel belts 9 and the node plates 8.

[0086] Each of the two-limbed cap-shaped cold-formed thin-walled steel columns 1 has two column foot anti-pullout connectors 7 at the upper and lower ends of the side walls, and a plurality of self-tapping screws 5 are driven into the column foot anti-pullout connectors 7 and the two-limbed cap-shaped cold-formed thin-walled steel columns 1. Fig.17 , which is a schematic diagram of the column base anti-pullout connector 7.

[0087] The assembly process includes the following steps:

[0088] 1. The double-limbed cap-shaped cold-bent thin-walled steel column 1 and the embedded steel plate 2 are connected by self-tapping screws 5.

[0089] 2. The cold-bent thin-walled steel beam 3 is connected to the embedded steel plate 2 by using self-tapping screws 5.

[0090] 3. The double-legged hat-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3 are connected by cold-bent thin-walled connectors 4 and bolts 6 to form a steel frame.

[0091] 4. The column base anti-pullout connector 7 is connected to the double-limbed cap-shaped cold-bent thin-walled steel column 1 by using self-tapping screws 5.

[0092] 5. The node plate 8 is connected to the double-legged cap-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3 by using the self-tapping screws 5, and the inclined steel belt 9 is connected to the node plate 8 by using the self-tapping screws 5 to complete the entire construction process.

[0093] Embodiment 2:

[0094] See also Figure 5 This embodiment discloses an assembled steel plate shear wall system with two seismic defense lines, including a double-legged cap-shaped cold-bent thin-walled steel column 1, an embedded steel plate 2, a cold-bent thin-walled steel beam 3 and a prefabricated mortar board with decorative steel bars 10.

[0095] The double-legged hat-shaped cold-bent thin-walled steel column 1 comprises two outer curled channel steels 101, see Fig.17, is a schematic diagram of an outer curled channel steel 101. The cold-bent thin-walled steel beam 3 comprises two cold-bent thin-walled special-shaped steels 301, and the cross-section of the cold-bent thin-walled special-shaped steels 301 is L-shaped. Fig. 20 , is a schematic diagram of cold-bent thin-walled special-shaped steel.

[0096] See also Figure 6 The embedded steel plate 2 is a vertically arranged rectangular plate, and two outer curled channel steels 101 and two cold-bent thin-walled special-shaped steels 301 are arranged on each side of the embedded steel plate 2. The two outer curled channel steels 101 on each side are respectively located at the two vertical edges of the embedded steel plate 2, and the two cold-bent thin-walled special-shaped steels 301 on each side are respectively located at the two horizontal edges of the embedded steel plate 2.

[0097] See also Figure 7 The grooves of the outer curled channel steels 101 on both sides of the embedded steel plate 2 are opposite, and a number of self-tapping screws 5 are driven into the curled edges of the embedded steel plate 2 and the outer curled channel steels 101 on both sides thereof. The two outer curled channel steels 101 with opposite grooves are spliced ​​to form a double-limb spliced ​​hat-shaped cold-bent thin-walled steel column 1.

[0098] See also Fig. 20 The cold-bent thin-walled special-shaped steel 301 includes a vertically connected steel plate I 3011 and a steel plate II 3012. Both the steel plates I 3011 and II 3012 are provided with inner curling edges. The outer surface of the steel plate I 3011 is in contact with the plate surface of the embedded steel plate 2, and the outer surface of the steel plate II 3012 is flush with the horizontal edge of the embedded steel plate 2. A number of the self-tapping screws 5 are driven into the embedded steel plate 2 and the steel plates I 3011 on both sides thereof, and the cold-bent thin-walled special-shaped steel 301 on both sides of the embedded steel plate 2 are spliced ​​to form a cold-bent thin-walled steel beam 3.

[0099] See also Figure 5 Or 6, two of the double-limbed cap-shaped cold-formed thin-walled steel columns 1 and two cold-formed thin-walled steel beams 3 are connected to form a steel frame. Two groups of bolt holes are arranged on the side of the double-limbed cap-shaped cold-formed thin-walled steel column 1 facing the cold-formed thin-walled steel beam 3, and the two groups of bolt holes are respectively located at the upper and lower ends of the double-limbed cap-shaped cold-formed thin-walled steel column 1. Both ends of the cold-formed thin-walled steel beam 3 are provided with a plurality of bolt holes.

[0100] The embedded steel plate 2 is provided with a plurality of bolt holes at each junction of the double-limbed cap-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3 .

[0101] See also Figure 8Each junction of the double-limbed cap-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3 is provided with two cold-bent thin-walled connectors 4, and the two cold-bent thin-walled connectors 4 are respectively located on both sides of the double-limbed cap-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3. The cold-bent thin-walled connector 4 is provided with a plurality of bolt holes, and the double-limbed cap-shaped cold-bent thin-walled steel column 1, the embedded steel plate 2, the cold-bent thin-walled steel beam 3 and the cold-bent thin-walled connector 4 are connected by bolts 6.

[0102] Prefabricated mortar boards 10 with decorative steel bars are arranged on both sides of the steel frame. The prefabricated mortar boards 10 with decorative steel bars are rectangular boards. Each prefabricated mortar board 10 with decorative steel bars is simultaneously fitted with two double-limbed cap-shaped cold-bent thin-walled steel columns 1, and a number of self-tapping screws 5 are driven into the prefabricated mortar boards 10 with decorative steel bars and the double-limbed cap-shaped cold-bent thin-walled steel columns 1.

[0103] See also Figure 5 Or 6, each of the two-limbed cap-shaped cold-bent thin-walled steel columns 1 is provided with two column foot anti-pulling connectors 7 at the upper and lower ends of the side wall, see Fig.21 , which is a schematic diagram of a column base anti-pullout connector 7, a plurality of self-tapping screws 5 are driven into the column base anti-pullout connector 7 and the double-limbed cap-shaped cold-bent thin-walled steel column 1.

[0104] The assembly process includes the following steps:

[0105] 1. The double-limbed cap-shaped cold-bent thin-walled steel column 1 and the embedded steel plate 2 are connected by self-tapping screws 5.

[0106] 2. The cold-bent thin-walled steel beam 3 is connected to the embedded steel plate 2 by using self-tapping screws 5.

[0107] 3. The double-legged hat-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3 are connected by cold-bent thin-walled connectors 4 and bolts 6 to form a steel frame.

[0108] 4. The column base anti-pullout connector 7 is connected to the double-limbed cap-shaped cold-bent thin-walled steel column 1 by using self-tapping screws 5.

[0109] 5. The self-tapping screws 5 are used to connect the prefabricated mortar board with decorative steel bars 10 with the double-limbed cap-shaped cold-bent thin-walled steel column 1 and the cold-bent thin-walled steel beam 3 to complete the entire construction process.

[0110] Embodiment 3:

[0111] See also Fig. 9 This embodiment discloses an assembled steel plate shear wall system with two seismic defense lines, including a cold-bent thin-walled steel column 11 with a welded closed end with an extended end, an embedded steel plate 2, a cold-bent thin-walled steel beam 3 and a diagonal steel belt 9.

[0112] See also Fig.18 Or 19, the cold-bent thin-walled steel column 11 with a welded closed end at the protruding end includes a square steel column 1101 and a welded steel plate 1102, the two square steel columns 1101 are arranged at an interval, and the side wall of each square steel column 1101 facing the other square steel column 1101 is connected with a welded steel plate 1102, and the two welded steel plates 1102 are on the same vertical plane.

[0113] See also Fig.10 There is a vertically arranged embedded steel plate 2 between the two square steel columns 1101. The embedded steel plate 2 is a rectangular plate. The embedded steel plate 2 is located on the same side of the welded steel plates 1102 of the two square steel columns 1101, and the two vertical edges of the embedded steel plate 2 are both in contact with the welded steel plates 1102 of the two square steel columns 1101.

[0114] A number of self-tapping screws 5 are driven into the welding steel plate 1102 and the embedded steel plate 2.

[0115] The cold-bent thin-walled steel beam 3 comprises two cold-bent thin-walled special-shaped steels 301, and the cross-section of the cold-bent thin-walled special-shaped steels 301 is L-shaped. Fig. 20 , which is a schematic diagram of cold-bent thin-walled special-shaped steel 301.

[0116] See also Fig.10 Cold-bent thin-walled special-shaped steels 301 are provided at the upper and lower ends of each side of the embedded steel plate 2 , and the two cold-bent thin-walled special-shaped steels 301 are respectively located at the two horizontal edges of the embedded steel plate 2 .

[0117] See also Fig. 20 The cold-bent thin-walled special-shaped steel 301 includes a vertically connected steel plate I 3011 and a steel plate II 3012. Both the steel plates I 3011 and II 3012 are provided with inner curling edges. The outer surface of the steel plate I 3011 is in contact with the plate surface of the embedded steel plate 2, and the outer surface of the steel plate II 3012 is flush with the horizontal edge of the embedded steel plate 2. A number of the self-tapping screws 5 are driven into the middle section of the steel plate I 3011 and the embedded steel plate 2, and every two cold-bent thin-walled special-shaped steels 301 are spliced ​​to form a cold-bent thin-walled steel beam 3.

[0118] The corners of the embedded steel plate 2 are each provided with two cold-bent thin-walled connectors 4, which are respectively located on both sides of the embedded steel plate 2. The cold-bent thin-walled connector 4 is provided with a plurality of bolt holes, see Fig.11 Or 12, a number of bolts 6 pass through the welded steel plate 1102, the embedded steel plate 2, the steel plate Ⅰ3011 on the cold-bent thin-walled special-shaped steel 301 and the bolt holes on the cold-bent thin-walled connector 4, and each bolt 6 is screwed into a nut to connect the two cold-bent thin-walled steel columns 11 with welded closed ends with the extended ends and the two cold-bent thin-walled steel beams 3 to form a steel frame.

[0119] See also Fig. 9Or 10, four node plates 8 are arranged on each side of the steel frame, and the four node plates 8 are respectively located at the four corners of the steel frame. Each node plate 8 is simultaneously fitted with the cold-bent thin-walled steel column 11 with a protruding end welded closed and the inner curling edge of the steel plate II3012, and a plurality of self-tapping screws 5 are driven into the node plate 8, the cold-bent thin-walled steel column 11 with a protruding end welded closed and the inner curling edge of the steel plate II3012.

[0120] A diagonal steel belt group is provided on each side of the steel frame, and the diagonal steel belt group includes two diagonal steel belts 9 arranged in an X shape. The four end plates of the diagonal steel belt group are respectively fitted with four node plates 8 on the same side, and a number of self-tapping screws 5 are driven into the diagonal steel belts 9 and the node plates 8.

[0121] Each of the side walls of the welded closed cold-bent thin-walled steel column 11 with extended ends is provided with two column foot anti-pullout connectors 7 at the upper and lower ends, and a plurality of self-tapping screws 5 are driven into the column foot anti-pullout connectors 7 and the welded closed cold-bent thin-walled steel column 11 with extended ends. Fig.21 , which is a schematic diagram of the column base anti-pullout connector 7.

[0122] The assembly process includes the following steps:

[0123] 1. The cold-bent thin-walled steel column 11 with welded closed end and the embedded steel plate 2 are connected with self-tapping screws 5.

[0124] 2. The cold-bent thin-walled steel beam 3 is connected to the embedded steel plate 2 and the cold-bent thin-walled steel column 11 with a welded closed end at the extended end by using self-tapping screws 5.

[0125] 3. The column base anti-pullout connector 7 is connected to the cold-bent thin-walled steel column 11 with a welded closed end and a protruding end by using a self-tapping screw 5.

[0126] 4. The node plate 8 is connected to the cold-bent thin-walled steel column 11 and the cold-bent thin-walled steel beam 3 with the welded closed end of the extended end by using the self-tapping screws 5, and the inclined steel belt 9 is connected to the node plate 8 by using the self-tapping screws 5 to complete the entire construction process.

[0127] Embodiment 4:

[0128] See also Fig.13 The present embodiment discloses an assembled steel plate shear wall system with two seismic defense lines, including a cold-bent thin-walled steel column 11 with a welded closed end with an extended end, an embedded steel plate 2, a cold-bent thin-walled steel beam 3 and a prefabricated mortar board 10 with decorative steel bars.

[0129] See also Fig.18Or 19, the cold-bent thin-walled steel column 11 with a welded closed end at the protruding end includes a square steel column 1101 and a welded steel plate 1102, the two square steel columns 1101 are arranged at an interval, and the side wall of each square steel column 1101 facing the other square steel column 1101 is connected with a welded steel plate 1102, and the two welded steel plates 1102 are on the same vertical plane.

[0130] See also Fig.14 There is a vertically arranged embedded steel plate 2 between the two square steel columns 1101. The embedded steel plate 2 is a rectangular plate. The embedded steel plate 2 is located on the same side of the welded steel plates 1102 of the two square steel columns 1101, and the two vertical edges of the embedded steel plate 2 are both in contact with the welded steel plates 1102 of the two square steel columns 1101.

[0131] A number of self-tapping screws 5 are driven into the welding steel plate 1102 and the embedded steel plate 2.

[0132] The cold-bent thin-walled steel beam 3 comprises two cold-bent thin-walled special-shaped steels 301, and the cross-section of the cold-bent thin-walled special-shaped steels 301 is L-shaped. Fig. 20 , is a schematic diagram of cold-bent thin-walled special-shaped steel 301.

[0133] Cold-bent thin-walled special-shaped steels 301 are provided at the upper and lower ends of each side of the embedded steel plate 2 , and the two cold-bent thin-walled special-shaped steels 301 are respectively located at the two horizontal edges of the embedded steel plate 2 .

[0134] See also Fig. 20 The cold-bent thin-walled special-shaped steel 301 includes a vertically connected steel plate I 3011 and a steel plate II 3012. Both the steel plates I 3011 and II 3012 are provided with inner curling edges. The outer surface of the steel plate I 3011 is in contact with the plate surface of the embedded steel plate 2, and the outer surface of the steel plate II 3012 is flush with the horizontal edge of the embedded steel plate 2. A number of the self-tapping screws 5 are driven into the middle section of the steel plate I 3011 and the embedded steel plate 2, and every two cold-bent thin-walled special-shaped steels 301 are spliced ​​to form a cold-bent thin-walled steel beam 3.

[0135] See also Fig.15 , two cold-bent thin-walled connectors 4 are provided at the corners of the embedded steel plate 2, and the two cold-bent thin-walled connectors 4 are respectively located on both sides of the embedded steel plate 2. The cold-bent thin-walled connectors 4 are provided with a plurality of bolt holes, and the welded steel plate 1102, the embedded steel plate 2, the steel plate I 3011 on the cold-bent thin-walled special-shaped steel 301 and the cold-bent thin-walled connectors 4 are connected by bolts 6, and the two cold-bent thin-walled steel columns 11 with extended ends welded and closed and the two cold-bent thin-walled steel beams 3 are connected to form a steel frame.

[0136] See also Fig.16Prefabricated mortar boards 10 with decorative steel bars are arranged on both sides of the steel frame. The prefabricated mortar boards 10 with decorative steel bars are rectangular plates. Each prefabricated mortar board 10 with decorative steel bars is simultaneously fitted with two cold-bent thin-walled steel columns 11 welded with protruding ends and closed. A number of self-tapping screws 5 are driven into the prefabricated mortar boards 10 with decorative steel bars and the cold-bent thin-walled steel columns 11 welded with protruding ends and closed.

[0137] Each of the side walls of the welded closed cold-bent thin-walled steel column 11 with extended ends is provided with two column foot anti-pullout connectors 7 at the upper and lower ends, and a plurality of self-tapping screws 5 are driven into the column foot anti-pullout connectors 7 and the welded closed cold-bent thin-walled steel column 11 with extended ends. Fig.21 , which is a schematic diagram of the column base anti-pullout connector 7.

[0138] The assembly process includes the following steps:

[0139] 1. The cold-bent thin-walled steel column 11 with welded closed end and the embedded steel plate 2 are connected with self-tapping screws 5.

[0140] 2. The cold-bent thin-walled steel columns 11 with welded closed ends at the extended ends, the cold-bent thin-walled steel beams 3 and the cold-bent thin-walled connectors 4 embedded in the steel plates 2 are connected by self-tapping screws 5 to form a steel frame.

[0141] 3. The column base anti-pullout connector 7 is connected to the cold-bent thin-walled steel column 11 with a welded closed end and a protruding end by using a self-tapping screw 5.

[0142] 4. The self-tapping screws 5 are used to connect the prefabricated mortar board with decorative steel bars 10, the cold-bent thin-walled steel column 11 with welded closed ends at the extended ends, and the cold-bent thin-walled steel beam 3 to complete the entire construction process.

Claims

1. An assembled steel plate shear wall system with two seismic lines, characterized in that: It comprises a double-legged cap-shaped cold-formed thin-walled steel column (1), an embedded steel plate (2), a cold-formed thin-walled steel beam (3) and a diagonal steel belt (9); The double-limbed cap-shaped cold-bent thin-walled steel column (1) comprises two outer curled channel steels (101); the cold-bent thin-walled steel beam (3) comprises two cold-bent thin-walled special-shaped steels (301), and the cross-section of the cold-bent thin-walled special-shaped steels (301) is L-shaped; The embedded steel plate (2) is a vertically arranged rectangular plate, and each side of the embedded steel plate (2) is provided with two outer curling channel steels (101) and two cold-bent thin-walled special-shaped steels (301), the two outer curling channel steels (101) on each side are respectively located at two vertical edges of the embedded steel plate (2), and the two cold-bent thin-walled special-shaped steels (301) on each side are respectively located at two horizontal edges of the embedded steel plate (2); The grooves of the outer curling channel steels (101) on both sides of the embedded steel plate (2) are opposite to each other, a plurality of self-tapping screws (5) are driven into the inner steel plate (2) and the curling edges of the outer curling channel steels (101) on both sides thereof, and the two outer curling channel steels (101) with opposite grooves are spliced ​​to form a double-limbed cap-shaped cold-bent thin-walled steel column (1); The cold-bent thin-walled special-shaped steel (301) comprises a steel plate I (3011) and a steel plate II (3012) which are vertically connected. The steel plate I (3011) and the steel plate II (3012) are both provided with inner curling edges. The outer surface of the steel plate I (3011) is in contact with the plate surface of the embedded steel plate (2), and the outer surface of the steel plate II (3012) is flush with the horizontal edge of the embedded steel plate (2). A plurality of self-tapping screws (5) are driven into the embedded steel plate (2) and the steel plates I (3011) on both sides thereof to form a cold-bent thin-walled steel beam (3). Two of the double-limbed hat-shaped cold-bent thin-walled steel columns (1) and two cold-bent thin-walled steel beams (3) are connected to form a steel frame; two groups of bolt holes are arranged on the side of the double-limbed hat-shaped cold-bent thin-walled steel column (1) facing the cold-bent thin-walled steel beam (3), and the two groups of bolt holes are respectively located at the upper and lower ends of the double-limbed hat-shaped cold-bent thin-walled steel column (1); and a plurality of bolt holes are arranged at both ends of the cold-bent thin-walled steel beam (3); A plurality of bolt holes are provided at the four corners of the embedded steel plate (2); Two cold-bent thin-walled connectors (4) are provided at each junction of the double-jointed hat-shaped cold-bent thin-walled steel column (1) and the cold-bent thin-walled steel beam (3), and the two cold-bent thin-walled connectors (4) are respectively located on both sides of the double-jointed hat-shaped cold-bent thin-walled steel column (1) and the cold-bent thin-walled steel beam (3); a plurality of bolt holes are provided on the cold-bent thin-walled connector (4), and the double-jointed hat-shaped cold-bent thin-walled steel column (1), the embedded steel plate (2), the cold-bent thin-walled steel beam (3) and the cold-bent thin-walled connector (4) are connected by bolts (6); Four node plates (8) are provided on each side of the steel frame, and the four node plates (8) are respectively located at the four corners of the steel frame; each of the node plates (8) is simultaneously fitted with the inner curling edge of the double-limbed cap-shaped cold-bent thin-walled steel column (1) and the steel plate II (3012), and a plurality of self-tapping screws (5) are driven into the node plates (8), the double-limbed cap-shaped cold-bent thin-walled steel column (1) and the inner curling edge of the steel plate II (3012); Each side of the steel frame is provided with an inclined steel belt group, the inclined steel belt group includes two inclined steel belts (9) arranged in an X shape, the inclined steel belt group is respectively fitted with four node plates (8) on the same side, and a plurality of self-tapping screws (5) are driven into the inclined steel belts (9) and the node plates (8); Two column foot anti-pullout connectors (7) are respectively arranged at the upper and lower ends of the side walls of each of the double-limbed cap-shaped cold-bent thin-walled steel columns (1), and a plurality of self-tapping screws (5) are driven into the column foot anti-pullout connectors (7) and the double-limbed cap-shaped cold-bent thin-walled steel columns (1).

2. An assembled steel plate shear wall system with two seismic lines, characterized in that: It comprises a double-legged cap-shaped cold-bent thin-walled steel column (1), an embedded steel plate (2), a cold-bent thin-walled steel beam (3) and a prefabricated mortar board with decorative steel bars (10); The double-limbed cap-shaped cold-bent thin-walled steel column (1) comprises two outer curled channel steels (101); the cold-bent thin-walled steel beam (3) comprises two cold-bent thin-walled special-shaped steels (301), and the cross-section of the cold-bent thin-walled special-shaped steels (301) is L-shaped; The embedded steel plate (2) is a vertically arranged rectangular plate, and each side of the embedded steel plate (2) is provided with two outer curling channel steels (101) and two cold-bent thin-walled special-shaped steels (301), the two outer curling channel steels (101) on each side are respectively located at two vertical edges of the embedded steel plate (2), and the two cold-bent thin-walled special-shaped steels (301) on each side are respectively located at two horizontal edges of the embedded steel plate (2); The grooves of the outer curling channel steels (101) on both sides of the embedded steel plate (2) are opposite to each other, and a plurality of self-tapping screws (5) are driven into the inner steel plate (2) and the curling edges of the outer curling channel steels (101) on both sides thereof, so that the two outer curling channel steels (101) with opposite grooves are assembled into a double-limbed cap-shaped cold-bent thin-walled steel column (1); The cold-bent thin-walled special-shaped steel (301) comprises a steel plate I (3011) and a steel plate II (3012) which are vertically connected. The steel plate I (3011) and the steel plate II (3012) are both provided with inner curling edges. The outer surface of the steel plate I (3011) is in contact with the plate surface of the embedded steel plate (2), and the outer surface of the steel plate II (3012) is flush with the horizontal edge of the embedded steel plate (2). A plurality of the self-tapping screws (5) are driven into the embedded steel plate (2) and the steel plates I (3011) on both sides thereof to form a cold-bent thin-walled steel beam (3). Two of the double-limbed hat-shaped cold-bent thin-walled steel columns (1) and two cold-bent thin-walled steel beams (3) are connected to form a steel frame; two groups of bolt holes are provided on the surface of the double-limbed hat-shaped cold-bent thin-walled steel column (1) and one side of the cold-bent thin-walled steel beam (3), and the two groups of bolt holes are respectively located at the upper and lower ends of the double-limbed hat-shaped cold-bent thin-walled steel column (1); and a plurality of bolt holes are provided at both ends of the cold-bent thin-walled steel beam (3); The embedded steel plate (2) is provided with a plurality of bolt holes at each junction of the double-limbed cap-shaped cold-bent thin-walled steel column (1) and the cold-bent thin-walled steel beam (3); Two cold-bent thin-walled connectors (4) are provided at each junction of the double-jointed hat-shaped cold-bent thin-walled steel column (1) and the cold-bent thin-walled steel beam (3), and the two cold-bent thin-walled connectors (4) are respectively located on both sides of the double-jointed hat-shaped cold-bent thin-walled steel column (1) and the cold-bent thin-walled steel beam (3); a plurality of bolt holes are provided on the cold-bent thin-walled connector (4), and the double-jointed hat-shaped cold-bent thin-walled steel column (1), the embedded steel plate (2), the cold-bent thin-walled steel beam (3) and the cold-bent thin-walled connector (4) are connected by bolts (6); Prefabricated decorative steel mortar boards (10) are provided on both sides of the steel frame. The prefabricated decorative steel mortar boards (10) are rectangular boards. Each prefabricated decorative steel mortar board (10) is simultaneously fitted with two double-limbed cap-shaped cold-bent thin-walled steel columns (1). A plurality of self-tapping screws (5) are driven into the prefabricated decorative steel mortar boards (10) and the double-limbed cap-shaped cold-bent thin-walled steel columns (1). Two column foot anti-pullout connectors (7) are respectively arranged at the upper and lower ends of the side wall of each double-limbed cap-shaped cold-bent thin-walled steel column (1), and a plurality of self-tapping screws (5) are driven into the column foot anti-pullout connectors (7) and the double-limbed cap-shaped cold-bent thin-walled steel column (1).

3. An assembled steel plate shear wall system with two seismic lines, characterized in that: It comprises a cold-bent thin-walled steel column (11) with a welded closed end having an extended end, an embedded steel plate (2), a cold-bent thin-walled steel beam (3) and a diagonal steel belt (9); The welded closed cold-bent thin-walled steel column (11) with an extended end comprises a square steel column (1101) and a welded steel plate (1102), wherein the two square steel columns (1101) are arranged at an interval, and the side wall of each square steel column (1101) facing the other square steel column (1101) is connected to a welded steel plate (1102), and the two welded steel plates (1102) are on the same vertical plane; There is a vertically arranged embedded steel plate (2) between the two square steel columns (1101), the embedded steel plate (2) is a rectangular plate, the embedded steel plate (2) is located on the same side of the welded steel plates (1102) of the two square steel columns (1101), and the two vertical edges of the embedded steel plate (2) are both in contact with the welded steel plates (1102) of the two square steel columns (1101); A plurality of self-tapping screws (5) are driven into the welded steel plate (1102) and the embedded steel plate (2); The cold-bent thin-walled steel beam (3) comprises two cold-bent thin-walled special-shaped steels (301), and the cross-section of the cold-bent thin-walled special-shaped steels (301) is L-shaped; Cold-bent thin-walled special-shaped steel (301) is provided at the upper and lower ends of each side of the embedded steel plate (2), and the two cold-bent thin-walled special-shaped steels (301) are respectively located at two horizontal edges of the embedded steel plate (2); The cold-bent thin-walled special-shaped steel (301) comprises a steel plate I (3011) and a steel plate II (3012) which are vertically connected. The steel plate I (3011) and the steel plate II (3012) are both provided with inner curling edges. The outer surface of the steel plate I (3011) is in contact with the plate surface of the embedded steel plate (2), and the outer surface of the steel plate II (3012) is flush with the horizontal edge of the embedded steel plate (2). A plurality of the self-tapping screws (5) are driven into the middle section of the steel plate I (3011) and the embedded steel plate (2). Every two cold-bent thin-walled special-shaped steels (301) are spliced ​​to form a cold-bent thin-walled steel beam (3). Two cold-bent thin-walled connectors (4) are provided at the corners of the embedded steel plate (2), and the two cold-bent thin-walled connectors (4) are respectively located on both sides of the embedded steel plate (2); a plurality of bolt holes are provided on the cold-bent thin-walled connector (4), and a plurality of bolts (6) pass through the welded steel plate (1102), the embedded steel plate (2), the steel plate I (3011) on the cold-bent thin-walled special-shaped steel (301), and the bolt holes on the cold-bent thin-walled connector (4), and each bolt (6) is screwed into a nut to connect the two cold-bent thin-walled steel columns (11) with extended ends welded and closed and the two cold-bent thin-walled steel beams (3) to form a steel frame; Four node plates (8) are provided on each side of the steel frame, and the four node plates (8) are respectively located at the four corners of the steel frame; each of the node plates (8) is simultaneously fitted with the cold-bent thin-walled steel column (11) with a protruding end welded closed and the inner curling edge of the steel plate II (3012), and a plurality of self-tapping screws (5) are driven into the node plate (8), the cold-bent thin-walled steel column (11) with a protruding end welded closed and the inner curling edge of the steel plate II (3012); Each side of the steel frame is provided with an inclined steel belt group, the inclined steel belt group includes two inclined steel belts (9) arranged in an X shape, the inclined steel belt group is respectively fitted with four node plates (8) on the same side, and a plurality of self-tapping screws (5) are driven into the inclined steel belts (9) and the node plates (8); Two column foot anti-pullout connectors (7) are respectively arranged at the upper and lower ends of the side wall of each of the cold-bent thin-walled steel columns (11) with extended ends welded closed, and a plurality of self-tapping screws (5) are driven into the column foot anti-pullout connectors (7) and the cold-bent thin-walled steel columns (11) with extended ends welded closed.

4. An assembled steel plate shear wall system with two seismic lines, characterized in that: It comprises a cold-bent thin-walled steel column (11) with a welded closed end having an extended end, an embedded steel plate (2), a cold-bent thin-walled steel beam (3) and a prefabricated mortar board with decorative steel bars (10); The welded closed cold-bent thin-walled steel column (11) with an extended end comprises a square steel column (1101) and a welded steel plate (1102), wherein the two square steel columns (1101) are arranged at an interval, and the side wall of each square steel column (1101) facing the other square steel column (1101) is connected to a welded steel plate (1102), and the two welded steel plates (1102) are on the same vertical plane; There is a vertically arranged embedded steel plate (2) between the two square steel columns (1101), the embedded steel plate (2) is a rectangular plate, the embedded steel plate (2) is located on the same side of the welded steel plates (1102) of the two square steel columns (1101), and the two vertical edges of the embedded steel plate (2) are both in contact with the welded steel plates (1102) of the two square steel columns (1101); A plurality of self-tapping screws (5) are driven into the welded steel plate (1102) and the embedded steel plate (2); The cold-bent thin-walled steel beam (3) comprises two cold-bent thin-walled special-shaped steels (301), and the cross-section of the cold-bent thin-walled special-shaped steels (301) is L-shaped; Cold-bent thin-walled special-shaped steel (301) is provided at the upper and lower ends of each side of the embedded steel plate (2), and the two cold-bent thin-walled special-shaped steels (301) are respectively located at two horizontal edges of the embedded steel plate (2); The cold-bent thin-walled special-shaped steel (301) comprises a steel plate I (3011) and a steel plate II (3012) which are vertically connected. The steel plate I (3011) and the steel plate II (3012) are both provided with inner curling edges. The outer surface of the steel plate I (3011) is in contact with the plate surface of the embedded steel plate (2), and the outer surface of the steel plate II (3012) is flush with the horizontal edge of the embedded steel plate (2). A plurality of the self-tapping screws (5) are driven into the middle section of the steel plate I (3011) and the embedded steel plate (2). Every two cold-bent thin-walled special-shaped steels (301) are spliced ​​to form a cold-bent thin-walled steel beam (3). Two cold-bent thin-walled connectors (4) are provided at the corners of the embedded steel plate (2), and the two cold-bent thin-walled connectors (4) are respectively located on both sides of the embedded steel plate (2); a plurality of bolt holes are provided on the cold-bent thin-walled connector (4), and a plurality of bolts (6) pass through the welded steel plate (1102), the embedded steel plate (2), the steel plate I (3011) on the cold-bent thin-walled special-shaped steel (301), and the bolt holes on the cold-bent thin-walled connector (4), and each bolt (6) is screwed into a nut to connect the two cold-bent thin-walled steel columns (11) with extended ends welded and closed and the two cold-bent thin-walled steel beams (3) to form a steel frame; Prefabricated decorative steel mortar boards (10) are provided on both sides of the steel frame. The prefabricated decorative steel mortar boards (10) are rectangular boards. Each prefabricated decorative steel mortar board (10) is simultaneously fitted with two cold-bent thin-walled steel columns (11) welded with extended ends and closed. A plurality of self-tapping screws (5) are driven into the prefabricated decorative steel mortar boards (10) and the cold-bent thin-walled steel columns (11) welded with extended ends and closed. Two column foot anti-pullout connectors (7) are respectively arranged at the upper and lower ends of the side wall of each of the cold-bent thin-walled steel columns (11) with extended ends welded closed, and a plurality of self-tapping screws (5) are driven into the column foot anti-pullout connectors (7) and the cold-bent thin-walled steel columns (11) with extended ends welded closed.

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