A prefabricated steel composite shear wall structure system and construction method

Abstract

The present invention discloses a prefabricated steel composite shear wall structure system and a construction method, wherein the first wall, the second wall and two third walls are connected to form the smallest component unit in the structure system; the first wall, the second wall and the two third walls are rectangular and divided into two layers, and are closely arranged; the first wall and the second wall are arranged at different layers and one end of the two walls are vertically butted; two vertically parallel channel steels are arranged inside the first wall, the second wall and the third wall; the bottoms of the two channel steels are connected by two angle steels; a built-in steel plate is arranged in the space where the channel steel and the angle steel are connected; the channel steel, the angle steel and the built-in steel plate are poured with concrete to form a wall structure; the present invention has a simple process and is easy to implement, reduces the complexity of prefabricated construction and the difficulty in ensuring quality, greatly improves construction efficiency, reduces cost investment, shortens construction period, and ensures construction quality and safety.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and in particular to a prefabricated steel composite shear wall structure system and a construction method. Background Art

[0002] The construction process of traditional prefabricated shear wall structures is cumbersome, and the stress characteristics are not obvious, especially the connection between walls is more complicated and the quality is difficult to guarantee; during the construction process of traditional prefabricated shear wall structural systems, either the walls are assembled on site through multiple processes, which involves a large amount of manpower and large-scale concrete pouring, resulting in difficult on-site construction and long construction periods; or the structural system is built through prefabricated prefabricated walls, but the connection efficiency and connection strength between adjacent walls cannot be guaranteed at the same time, resulting in a decrease in construction quality and efficiency. In addition, most shear wall structures have steel mesh structures inside, and their performance in overcoming out-of-plane bending moments and bearing vertical bearing capacity is poor. Summary of the invention

[0003] The main purpose of the present invention is to provide a prefabricated steel composite shear wall structure system and a construction method, aiming to solve the existing technical problems.

[0004] To achieve the above object, the present invention provides a prefabricated steel composite shear wall structural system, comprising a first wall, a second wall and a third wall, wherein the first wall, the second wall and two third walls are connected to form the smallest component unit in the structural system;

[0005] The first wall, the second wall and the two third walls are rectangular in shape and are arranged closely in two layers, the first wall and the second wall are arranged in different layers and one end of the two walls are vertically butted against each other. Two vertically parallel channel steels are arranged inside the first wall, the second wall and the third wall, and the bottoms of the two channel steels are connected by two angle steels. A built-in steel plate is arranged in the space where the channel steel and the angle steel are connected, and concrete is poured between the channel steel, the angle steel and the built-in steel plate to form a wall structure.

[0006] Furthermore, a movable steel plate is provided at the lower part of the surface of the first wall, and the movable steel plate is arranged with the same length as the first wall, and one end of the movable steel plate is rotatably connected to the first wall via a rotating shaft, and the other end is movably connected to the first wall via a positioning bolt. When the movable steel plate is in a horizontal state, half of its body overlaps with the first wall, and at least two positioning screw holes are opened on the movable steel plate. When the first wall and the second wall are butt-jointed up and down, the movable steel plate is horizontally fixed on the first wall, and its lower part overlaps with the second wall, and is pre-positioned by inserting a positioning rod.

[0007] Furthermore, the sides of the first wall, the second wall and the third wall are all provided with slots, and the movable steel plate is provided with casting holes whose size is smaller than the slots. When the second wall is connected to the third wall, the movable steel plate is rotated at the joint between the second wall and the third wall to close the slot of the combination of the two walls, and the casting hole is connected with the slot, and the reinforced connection is completed by injecting concrete into the slot.

[0008] Furthermore, the second wall and the third wall have equidistantly provided sockets at the joint surface, the second wall has a first casting channel connected to the sockets, one end of the first casting channel is connected to the slot, and the side of the third wall has a plug rod adapted to the socket, and after concrete is injected into the slot, the concrete enters the first casting channel and is reinforced and connected to one end of the plug rod.

[0009] Furthermore, a reinforcing rod is welded to the bottom of the channel steel in the first wall and the third wall located on the upper layer, and a rod groove adapted to the reinforcing rod is opened on the second wall and the third wall located on the lower layer, and a second casting channel connected to the rod groove is opened in the second wall, and the second casting channel is connected to the first casting channel. After concrete is injected into the groove, the concrete enters the second casting channel and is reinforced and connected to one end of the reinforcing rod.

[0010] Furthermore, the top end of the built-in steel plate extends to the upper part of the wall, and the channel steel is provided with an L-shaped groove adapted to the shape of the end portion of the angle steel. The L-shaped groove is spaced apart from its bottom on the channel steel, and the spacing distance is equal to the length of the top end of the built-in steel plate extending to the upper part of the wall. Both ends of the angle steel are matched with the L-shaped groove and welded and fixed, and fixing holes are equidistantly provided on the angle steel. The surfaces of the first wall, the second wall and the third wall are all provided with matching holes connected to the fixing holes. A through hole is provided on the plate body of the built-in steel plate located at the upper part of the wall, and the connection is reinforced by inserting screws that pass through the matching holes, the fixing holes and the through holes in sequence after the walls are butt-jointed. The lower parts of the surfaces of the first wall, the second wall and the third wall are all provided with grouting holes that are connected to the lower space of the angle steel inside them.

[0011] Furthermore, the built-in steel plate is a corrugated plate and is evenly provided with through holes. The bottom of the built-in steel plate is plugged into the angle steel, and the two ends of the built-in steel plate are movably plugged into the channel steel. The top of the built-in steel plate has a protrusion, and the bottom of the built-in steel plate is provided with a groove that cooperates with the protrusion. When the upper and lower walls are butt-jointed, the top of the built-in steel plate in the lower wall is inserted into the groove at the bottom of the upper steel plate to form a limiting connection.

[0012] A construction method of a shear wall structure system, which relates to the above-mentioned prefabricated steel composite shear wall structure system, is characterized by comprising the following steps:

[0013] Step 1: Connect two angle steels to two channel steels respectively, and vertically place the built-in steel plate into the space formed by the channel steel and the angle steel, support the formwork outside the frame, and pour concrete to form the foundation structures of the first wall, the second wall, and the third wall respectively;

[0014] Step 2: hoist the second wall into place, then hoist the first wall onto the second wall, insert the built-in steel plate extending from the second wall into the first wall, and the movable steel plate provided on the surface of the first wall partially overlaps with the second wall, insert the positioning screw into the positioning screw hole, pre-position the first wall and the second wall, and pass the reinforcing screw through the matching hole, the fixing hole and the through hole in turn to reinforce the position, and then inject concrete into the connection space of the two walls through the grouting hole to reinforce the connection;

[0015] Step 3: dock the third wall with the second wall in a vertical posture, insert the plug rod provided on it into the plug hole on the second wall for pre-positioning, then dock the other third wall with the first wall, release the limit of one end of the movable steel plate and rotate it 180°, insert the positioning screw again, pre-position the third wall hoisted for the second time, and then insert the reinforcement screw and inject concrete;

[0016] Step 4: Release the limit at one end of the movable steel plate again and rotate it downward 90°, close the groove where the second wall and the third wall meet, and inject concrete into the groove. After the concrete fills the groove, it flows into the first pouring channel, and is reinforced and connected with the inserted rod after solidification. At the same time, it flows into the second pouring channel, and is reinforced and connected with the reinforcement support rod after solidification, so that the first wall, the second wall and the third wall form a stable structural system.

[0017] The beneficial effects of the present invention are embodied in:

[0018] In the present invention, the stress characteristics of steel and concrete are fully utilized. Channel steel is used to overcome out-of-plane bending moments and bear vertical bearing capacity; angle steel acts as the bottom crossbeam and mold, can bear the bottom shear force, fix the vertical channel steel, and can also be used as a template for the concrete wall. The corrugated plate acts as the internal skeleton of the concrete, effectively bearing the out-of-plane bending moment and also bearing part of the vertical load. The corrugated web as a skeleton can better enhance the energy consumption of the shear wall structure. Due to the presence of the opening, it can be fully connected with the concrete, and the amount of steel used can also be reduced. Prestressing suppresses the inward and outward turning of the channel steel plane, and also suppresses the cracking of the concrete in the key part; the present invention has a simple process and is easy to implement, which reduces the complexity of prefabricated construction and the difficulty in ensuring quality, greatly improves the construction efficiency, reduces the cost investment, shortens the construction period, and ensures the quality and safety of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structural system of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal skeleton structure of the combined wall of the present invention;

[0021] Figure 3 It is a bottom view schematic diagram of the first wall structure of the present invention;

[0022] Figure 4 This is a structural schematic diagram of another embodiment of the built-in steel plate of the present invention;

[0023] Description of reference numerals:

[0024] 10. First wall; 101. Matching hole; 102. Grouting hole; 20. Second wall; 201. Notch; 202. First casting channel; 203. Second casting channel; 30. Third wall; 301. Insert rod; 40. Channel steel; 41. Angle steel; 411. Fixing hole; 42. Built-in steel plate; 421. Through hole; 422. Reinforcement support rod; 50. Movable steel plate; 51. Rotating shaft; 52. Positioning bolt; 53. Casting hole; 54. Positioning screw hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist.

[0028] See also Figure 1 The present invention provides a prefabricated steel composite shear wall structural system, including a first wall 10, a second wall 20 and a third wall 30. The first wall 10, the second wall 20 and two third walls 30 are connected to form the smallest component unit in the structural system; it should be noted that only one third wall 30 is shown in the figure.

[0029] See also Figure 2 The first wall 10, the second wall 20 and the two third walls 30 are rectangular and arranged closely in two layers. The first wall 10 and the second wall 20 are arranged in different layers and one end of the two walls are vertically connected. Two vertical parallel channel steels 40 are arranged inside the first wall 10, the second wall 20 and the third wall 30. The bottoms of the two channel steels 40 are connected by two angle steels 41. An internal steel plate 42 is arranged in the space where the channel steel 40 and the angle steel 41 are connected. Concrete is poured between the channel steel 40, the angle steel 41 and the internal steel plate 42 to form a wall structure.

[0030] The present invention makes full use of the stress characteristics of steel and concrete. The channel steel 40 is used to overcome the out-of-plane bending moment and bear the vertical bearing capacity; the angle steel 41 acts as the bottom crossbeam and mold, which can bear the bottom shear force, fix the vertical channel steel 40, and can also be used as a template for the concrete wall. The built-in steel plate 42 acts as the internal skeleton of the concrete, effectively bearing the out-of-plane bending moment and also bearing part of the vertical load. The present invention has a simple process and is easy to implement. It reduces the complexity of prefabricated construction and the difficulty in ensuring quality, greatly improves the construction efficiency, reduces the cost investment, shortens the construction period, and ensures the quality and safety of the construction.

[0031] In one embodiment, see Figure 1A movable steel plate 50 is provided at the lower part of the surface of the first wall 10. The movable steel plate 50 is set to be of the same length as the first wall 10, and one end of the movable steel plate 50 is rotatably connected to the first wall 10 through a rotating shaft 51, and the other end is movably connected to the first wall 10 through a positioning bolt 52. When the movable steel plate 50 is in a horizontal state, half of its body overlaps with the first wall 10, and at least two positioning screw holes 54 are opened on the movable steel plate 50. When the first wall 10 and the second wall 20 are connected up and down, the movable steel plate 50 is horizontally fixed on the first wall 10, and its lower part overlaps with the second wall 20, and is pre-positioned by inserting a positioning rod.

[0032] Before hoisting, traditional shear walls need to have lifting ears welded on their surfaces so that they can be pre-positioned through the lifting ears after the two walls are butted together. However, after the assembly is completed, the lifting ears need to be cut and removed, which increases the workload. The present application arranges a movable steel plate 50. After the first wall is prefabricated, the movable steel plate 50 is installed on its surface through the rotating shaft 51, and the other end is movably fixed by a positioning bolt 52. During on-site hoisting, when the first wall 10 is butt-jointed with the second wall of the lower layer, the movable steel plate 50 partially overlaps with the second wall 20. At this time, the positioning rod is inserted through the movable steel plate 50 into the second wall 20 to pre-position the first wall 10 and the second wall 20, and there is no need to remove them during the subsequent assembly process.

[0033] After the assembly of the first wall 10 and the second wall 20 is completed and the third wall 30 is connected to the second wall 20, the limit at one end of the movable steel plate 50 is released and it is rotated 180° so that it partially overlaps with the third wall 30 of the lower layer and is fixed. At this time, the upper wall is hoisted, which also has the effect of pre-positioning and replaces the traditional method of welding lifting ears. In addition, by reusing the movable steel plate 50, it is used in sequence according to the assembly steps, which saves material usage and improves construction efficiency.

[0034] In one embodiment, see Figure 1 The first wall 10, the second wall 20 and the third wall 30 are all provided with slots 201 on their sides, and the movable steel plate 50 is provided with casting holes 53 whose size is smaller than the slots 201. When the second wall 20 is connected to the third wall 30, the movable steel plate 50 is rotated at the joint between the second wall 20 and the third wall 30 to close the slot 201 of the combination of the two walls, and the casting holes 53 are connected with the slots 201, and the reinforced connection is completed by injecting concrete into the slots 201.

[0035] After the third wall 30 is butted against the second wall 20, the limit at one end of the movable steel plate 50 is released and rotated downward 90° to close the notch where the two walls are butted against each other. At this time, concrete is injected into the notch to complete the reinforced connection of the two walls. The movable steel plate 50 can be reused and used in sequence according to the assembly steps, thereby saving material usage and improving construction efficiency.

[0036] In one embodiment, see Figure 1 , the second wall 20 and the third wall 30 are provided with equidistantly arranged plug holes on the joint surface, the second wall 20 is provided with a first pouring channel 202 connected to the plug hole, one end of the first pouring channel 202 is connected to the groove 201, and the side of the third wall 30 is provided with an insertion rod 301 adapted to the plug hole. After concrete is injected into the groove 201, the concrete enters the first pouring channel 202 and is reinforced and connected with one end of the insertion rod 301.

[0037] After the second wall 20 is butted against the third wall 30, the insertion rod 301 arranged thereon is inserted into the insertion hole on the second wall 20. After concrete is injected into the groove, the concrete gradually fills the groove and enters the first pouring channel 202 to contact one end of the insertion rod 301. After solidification, a reinforced connection is formed, thereby improving the strength of the horizontal butt joint between the second wall 20 and the third wall 30.

[0038] In one embodiment, see Figure 2 A reinforcing support rod 422 is welded at the bottom of the channel steel 40 in the first wall 10 and the third wall 30 located on the upper layer, and a rod groove adapted to the reinforcing support rod 422 is opened on the second wall 20 and the third wall 30 located on the lower layer. A second pouring channel 203 connected to the rod groove is opened in the second wall 20, and the second pouring channel 203 is connected to the first pouring channel 202. After concrete is injected into the groove 201, the concrete enters the second pouring channel 203 and is reinforced and connected to one end of the reinforcing support rod 422.

[0039] When the upper wall is butt-jointed with the lower wall, the reinforcing support rod 422 arranged thereon will be inserted into the rod groove. During the horizontal connection process of the lower wall, the concrete injected into the groove will enter the second pouring channel 203 through the first pouring channel 202 and contact the reinforcing support rod 422. After solidification, a reinforced connection is formed, thereby further improving the connection strength between the upper wall and the lower wall, and the process is carried out simultaneously during the connection of the lower wall, thereby increasing the overall stability of the wall and improving construction efficiency.

[0040] In one embodiment, see Figure 2The top of the built-in steel plate 42 extends to the upper part of the wall, and an L-shaped groove (not shown in the figure) adapted to the shape of the end of the angle steel 41 is opened on the channel steel 40. The L-shaped groove is spaced apart from its bottom on the channel steel 40, and the spacing distance is equal to the length of the top of the built-in steel plate 42 extending to the upper part of the wall. Both ends of the angle steel 41 cooperate with the L-shaped groove and are welded and fixed, and fixing holes 411 are equidistantly opened on the angle steel 41. The surfaces of the first wall 10, the second wall 20 and the third wall 30 are all provided with matching holes 101 connected with the fixing holes 411. The built-in steel plate 42 is located on the plate body of the upper part of the wall. A through hole 421 is opened, and the connection is reinforced by inserting a screw rod that passes through the matching hole 101, the fixing hole 411 and the through hole 421 in sequence after the wall is butt-jointed. The lower part of the surface of the first wall 10, the second wall 20 and the third wall 30 is provided with a grouting hole 102 connected with the lower space of the angle steel 41 inside them.

[0041] After the upper wall and the lower wall are butt-jointed, the portion of the top of the built-in steel plate 42 in the lower wall extending outward is inserted into the lower space inside the upper wall. Afterwards, concrete is injected into the connection space of the two walls through the grouting holes 102 to reinforce the connection between the two walls.

[0042] In one embodiment, see Figure 3 and Figure 4 The built-in steel plate 42 is a corrugated plate, and through holes 421 are evenly opened on it. The bottom of the built-in steel plate 42 is plugged into the angle steel 41, and the two ends of the built-in steel plate 42 are movably plugged into the channel steel 40. The top of the built-in steel plate 42 has a protrusion, and the bottom of the built-in steel plate 42 is provided with a groove that matches the protrusion. When the upper and lower walls are butted, the top of the built-in steel plate 42 in the lower wall is inserted into the groove at the bottom of the upper steel plate to form a limited connection. This arrangement makes it easier for the built-in steel plates 42 set inside to have a higher butt-jointing force when the upper and lower walls are butted, thereby improving the stability of the wall after connection. The built-in steel plate 42 is arranged in a corrugated shape, which is easier to effectively bear the out-of-plane bending moment and also bear a part of the vertical load, which can better enhance the energy consumption of the shear wall structure.

[0043] A construction method of a shear wall structure system, which relates to the above-mentioned prefabricated steel composite shear wall structure system, is characterized by comprising the following steps:

[0044] Step 1: Connect two angle steels 41 to two channel steels 40 respectively, and vertically place the built-in steel plate 42 into the space formed by the channel steels 40 and the angle steels 41, support the formwork outside the frame, and pour concrete to form the foundation structures of the first wall 10, the second wall 20, and the third wall 30 respectively;

[0045] Step 2: hoist the second wall 20 into place, then hoist the first wall 10 onto the second wall 20, insert the built-in steel plate 42 extending from the second wall 20 into the first wall 10, and the movable steel plate 50 provided on the surface of the first wall 10 partially overlaps with the second wall 20, insert the positioning screw into the positioning screw hole 54, pre-position the first wall 10 and the second wall 20, and pass the reinforcing screw through the matching hole 101, the fixing hole 411 and the through hole 421 in sequence to reinforce the position, and then inject concrete into the connection space of the two walls through the grouting hole 102 to reinforce the connection;

[0046] Step 3: dock the third wall 30 with the second wall 20 in a vertical posture, insert the insertion rod 301 provided thereon into the insertion hole on the second wall 20 for pre-positioning, then dock the other third wall 30 with the first wall 10, release the limit at one end of the movable steel plate 50 and rotate it 180°, insert the positioning screw again, pre-position the third wall 30 hoisted for the second time, and then insert the reinforcement screw and inject concrete;

[0047] Step 4: Release the limit at one end of the movable steel plate 50 again and rotate it downward 90°, close the slot 201 where the second wall 20 and the third wall 30 meet, and inject concrete into the slot 201. After the concrete fills the slot 201, it flows into the first casting channel 202, and is reinforced and connected to the inserted rod 301 after solidification. At the same time, it flows into the second casting channel 203, and is reinforced and connected to the reinforcing support rod 422 after solidification, so that the first wall 10, the second wall 20 and the third wall 30 form a stable structural system.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated steel composite shear wall structure system, Features: It comprises a first wall (10), a second wall (20) and a third wall (30), wherein the first wall (10), the second wall (20) and two third walls (30) are connected to form a minimum component unit in the structural system; The first wall (10), the second wall (20) and the two third walls (30) are arranged in two layers in a rectangular shape and are closely arranged. The first wall (10) and the second wall (20) are arranged in different layers and one end of the first wall (10), the second wall (20) and the third wall (30) are vertically butted against each other. Two vertically parallel channel steels (40) are arranged inside the first wall (10), the second wall (20) and the third wall (30). The bottoms of the two channel steels (40) are connected by two angle steels (41). An internal steel plate (42) is arranged in the space where the channel steel (40) and the angle steel (41) are connected. Concrete is poured between the channel steel (40), the angle steel (41) and the internal steel plate (42) to form a wall structure. A movable steel plate (50) is provided at the lower part of the surface of the first wall (10). The movable steel plate (50) is arranged with the same length as the first wall (10), and one end of the movable steel plate (50) is rotatably connected to the first wall (10) through a rotating shaft (51), and the other end is movably connected to the first wall (10) through a positioning bolt (52). When the movable steel plate (50) is in a horizontal state, half of its plate body overlaps with the first wall (10), and at least two positioning screw holes (54) are opened on the movable steel plate (50). When the first wall (10) and the second wall (20) are connected to each other up and down, the movable steel plate (50) is horizontally fixed on the first wall (10), and its lower part overlaps with the second wall (20), and is pre-positioned by inserting a positioning rod.

2. A prefabricated steel composite shear wall structure system as claimed in claim 1, Features: The first wall (10), the second wall (20) and the third wall (30) are all provided with slots (201) on their sides, and the movable steel plate (50) is provided with a casting hole (53) whose size is smaller than the slot (201). When the second wall (20) is connected to the third wall (30), the movable steel plate (50) is rotated at the joint between the second wall (20) and the third wall (30) to close the slot (201) formed by the two walls, and the casting hole (53) is connected to the slot (201), and the reinforced connection is completed by injecting concrete into the slot (201).

3. A prefabricated steel composite shear wall structure system as claimed in claim 2, Features: The second wall (20) and the third wall (30) are provided with insertion holes at equal intervals on the butt joint surface; a first pouring channel (202) connected to the insertion hole is provided inside the second wall (20); one end of the first pouring channel (202) is connected to the notch (201); a plug rod (301) adapted to the insertion hole is provided on the side of the third wall (30); after concrete is injected into the notch (201), the concrete enters the first pouring channel (202) and is reinforced and connected to one end of the plug rod (301).

4. A prefabricated steel composite shear wall structure system as claimed in claim 3, Features: A reinforcing support rod (422) is welded to the bottom of the channel steel (40) in the first wall (10) and the third wall (30) located at the upper layer, and a rod groove adapted to the reinforcing support rod (422) is opened on the second wall (20) and the third wall (30) located at the lower layer. A second pouring channel (203) connected to the rod groove is opened in the second wall (20), and the second pouring channel (203) is connected to the first pouring channel (202). After concrete is injected into the groove (201), the concrete enters the second pouring channel (203) and is reinforced and connected to one end of the reinforcing support rod (422).

5. A prefabricated steel composite shear wall structure system as claimed in claim 4, Features: The top of the built-in steel plate (42) extends to the upper part of the wall, and the channel steel (40) is provided with an L-shaped groove that matches the shape of the end of the angle steel (41). The L-shaped groove is spaced apart from the bottom of the channel steel (40), and the spacing distance is equal to the length of the top of the built-in steel plate (42) extending to the upper part of the wall. The two ends of the angle steel (41) are matched with the L-shaped groove and welded and fixed, and the angle steel (41) is equidistantly provided with fixing holes (411). The first wall (10), the second wall (20) and the third wall The surfaces of the first wall (10), the second wall (20) and the third wall (30) are provided with matching holes (101) connected to the fixing holes (411); the inner steel plate (42) is provided with a through hole (421) on the plate body located at the upper part of the wall; the connection is reinforced by inserting screws that pass through the matching holes (101), the fixing holes (411) and the through hole (421) in sequence after the walls are butt-jointed; the lower parts of the surfaces of the first wall (10), the second wall (20) and the third wall (30) are provided with grouting holes (102) connected to the lower space of the angle steel (41) inside them.

6. A prefabricated steel composite shear wall structure system as claimed in claim 5, Features: The built-in steel plate (42) is a corrugated plate and is evenly provided with through holes (421). The bottom of the built-in steel plate (42) is plugged into the angle steel (41), and the two ends of the built-in steel plate (42) are movably plugged into the channel steel (40). The top of the built-in steel plate (42) is provided with a protruding portion, and the bottom of the built-in steel plate (42) is provided with a groove portion that matches the protruding portion. When the upper and lower wall bodies are butt-jointed, the top of the built-in steel plate (42) in the lower wall body is inserted into the groove portion at the bottom of the upper built-in steel plate (42) to form a limit connection.

7. A construction method of a shear wall structure system, relating to the prefabricated steel composite shear wall structure system according to claim 6, Features: The following steps are included: Step 1: Connect two angle steels (41) to two channel steels (40) respectively, and vertically place the built-in steel plate (42) into the space formed by the channel steels (40) and the angle steels (41), support the formwork outside the frame, and pour concrete to form the foundation structures of the first wall (10), the second wall (20), and the third wall (30); Step 2: hoist the second wall (20) into place, then hoist the first wall (10) onto the second wall (20), insert the built-in steel plate (42) extending from the second wall (20) into the first wall (10), and partially overlap the movable steel plate (50) provided on the surface of the first wall (10) with the second wall (20), insert the positioning screw into the positioning screw hole (54), pre-position the first wall (10) and the second wall (20), and pass the reinforcing screw through the matching hole (101), the fixing hole (411) and the through hole (421) in sequence to reinforce the position, and then inject concrete into the connection space of the two walls through the grouting hole (102) to reinforce the connection; Step 3: dock the third wall (30) with the second wall (20) in a vertical position, insert the insertion rod (301) provided thereon into the insertion hole on the second wall (20) for pre-positioning, then dock the other third wall (30) with the first wall (10), release the limit of one end of the movable steel plate (50) and rotate it 180°, insert the positioning screw again, pre-position the third wall (30) hoisted for the second time, then insert the reinforcement screw and inject concrete; Step 4: Release the limit at one end of the movable steel plate (50) again and rotate it downward 90°, close the notch (201) where the second wall (20) and the third wall (30) are connected, and inject concrete into the notch (201). After the concrete fills the notch (201), it flows into the first pouring channel (202), and after solidification, it is reinforced and connected to the insertion rod (301). At the same time, it flows into the second pouring channel (203), and after solidification, it is reinforced and connected to the reinforcement support rod (422), so that the first wall (10), the second wall (20) and the third wall (30) form a stable structural system.

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