Fabricated composite wall and assembly method

Abstract

The invention relates to the technical field of assembled wall bodies, in particular to an assembled composite wall body and an assembling method.The assembled composite wall body comprises a supporting assembly used for supporting the whole wall body, prefabricated wallboard units, connecting assemblies used for connecting and fixing the wallboard units and auxiliary parts used for assisting installation; each wallboard unit comprises a main wallboard unit and a load-bearing wallboard unit; each main wallboard unit comprises a steel bar frame and a waterproof board and further comprises a cavity isolated by the first steel bar frame and the waterproof board, and the steel bar frame and the first waterproof board are fixed through a concrete pouring mold. According to the fabricated wall, more accurate traction positioning can be achieved, the bearing wall plate units and the main wall plate units can meet the requirements of different construction drawings, the production cost is reduced, and the bearing capacity of the wall and the weight reducing effect are both considered.

Description

Technical Field

[0001] The present invention relates to the technical field of assembled walls, in particular to an assembled composite wall and an assembling method. Background Art

[0002] With the gradual increase in the number of high-rise buildings in China, how to effectively carry out environmental protection construction and technological innovation has received extensive attention from many scholars. The construction of high-rise building projects is not a simple and one-sided process, but a scientific and reasonable systematic layout. Prefabricated steel structure refers to a building component, assembly structure, and construction material based on green environmental protection and strong stability, with the design and manufacture of building components as the main part and steel as the main material. The steel structure has strong processability, strong seismic resistance, and good stability support. The prefabricated construction of the steel structure can make the entire construction process more convenient and optimally improve many disadvantages, cumbersome procedures, and risks in the previous concrete structure construction.

[0003] Currently, the challenges faced in the application of high-rise building steel structure prefabricated construction technology mainly include the following aspects: First, the hoisting requirements are relatively high; second, the anti-seepage requirements for high-rise building materials are higher; third, the construction technology requirements are higher. In response to the above three problems, how to form the mutual cooperation in various aspects to improve the construction effect is an important research topic at present. The practices of cold-formed thin-walled steel composite walls in the existing cold-formed thin-walled building technology are as follows: First, the "hollow wall" with structural skeletons on both sides sealed with panels and rock wool or glass wool filled in the middle; second, the "solid wall" with a single-sided sealed panel of the structural skeleton frame, spraying lightweight thermal insulation mortar on-site during construction, or double-sided sealed panels of the structural skeleton and pouring lightweight thermal insulation mortar on-site during construction; third, the practice of single-sided sealed panel of the structural skeleton and spraying foamed polyurethane on-site during construction. Fiber thermal insulation materials such as rock wool and glass wool are likely to come into contact with the human respiratory tract or skin during construction, which may be harmful to human health. Spraying or pouring lightweight thermal insulation mortar on-site in the cavity of the composite wall structure will not only cause a large amount of wet work at the construction site but also slow down the construction progress of the wall structure. The practice of spraying foamed polyurethane has caused a large amount of pollution to the environment and is harmful to the health of operating workers.

[0004] Therefore, for example, Chinese Patent CN107217758B discloses a fully prefabricated load-bearing light steel assembled composite wall panel and its manufacturing method. The wall panel includes a light steel composite wall panel, a transition patch panel, an upper U-shaped guide rail, a lower U-shaped guide rail, a diagonal tension steel belt, an uplift connector, and a fixing steel belt. It improves the overall stability and lateral stiffness of the wall, improves the installation accuracy and the structural integrity of the wall, enhances the shear resistance of the wall panel and the uplift force between the wall panel and the floor. The structure is relatively complex, and a high degree of cooperation between components is required during the assembly process.

[0005] Based on the above-mentioned deficiencies in the existing technologies, we propose a new prefabricated composite wall in order to overcome the deficiencies of the existing technologies. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a prefabricated composite wall and an assembly method. The prefabrication enables more accurate traction and positioning. The load-bearing wallboard unit and the main wallboard unit can meet the requirements of different construction drawings, reducing production costs and taking into account both the load-bearing capacity and the weight reduction effect of the wall.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The prefabricated composite wall includes a support assembly for supporting the entire wall, a prefabricated wallboard unit, a connection assembly for connecting and fixing the wallboard units, and an auxiliary part for assisting installation; the wallboard unit includes a main wallboard unit and a load-bearing wallboard unit; the main wallboard unit includes a steel bar framework and a waterproof board, and further includes a cavity separated by the first steel bar framework and the waterproof board. The steel bar framework and the first waterproof board are fixed by a concrete casting mold; the load-bearing wallboard unit includes a second steel bar framework for defining the frame structure of the entire load-bearing wallboard unit inside the concrete block, and a reinforcing steel plate is fixedly connected inside the second steel bar framework, and a second waterproof board is installed on the second steel bar framework.

[0009] Preferably, heat insulation cotton or fireproof board is inserted into the cavity.

[0010] Preferably, the cross-section of the reinforcing steel plate is in a "ten" shape or a "rice" shape, and the reinforcing steel plate is integrally formed by casting.

[0011] Preferably, the reinforcing steel plate is a hollow plate, and the cross-section of the reinforcing steel plate is in a hollow "ten" shape or a "rice" shape.

[0012] Preferably, the support assembly includes a positioning seat for being buried in the foundation and a limit steel column unit for passing through the wallboard unit. Through holes are provided on the main wallboard unit and the load-bearing wallboard unit corresponding to the limit steel column unit, and the length of the limit steel column unit is greater than the height of one wallboard unit and less than the sum of the heights of two wallboard units.

[0013] Preferably, the limit steel column unit includes a bottom plate and a top plate, and a plurality of steel bars are connected between the bottom plate and the top plate. Installation holes are provided on both the bottom plate and the top plate, and adjacent limit steel column units are tightly connected by bolts inserted into the installation holes.

[0014] Preferably, the connecting component includes a plug-in part and a receiving part; the plug-in part includes a first connecting plate, first plug plates are arranged on both symmetric sides of the first connecting plate, a plurality of plug rods are arranged in parallel on the first connecting plate, and elastic hanging pieces are arranged at the ends of the plug rods; the receiving part includes a second connecting plate, second plug plates are arranged on both symmetric sides of the second connecting plate, a plurality of socket columns are arranged in parallel on the second connecting plate, sockets corresponding to the elastic hanging pieces are arranged at the ends of the socket columns, and baffles are arranged at the openings of the sockets; slots are reserved on the main wall panel unit and the load-bearing wall panel unit corresponding to the first plug plates and the second plug plates.

[0015] Preferably, the auxiliary part includes traction holes respectively formed through between the side and the side surface of the wall panel unit, and further includes a traction steel wire detachably installed in the traction holes, and an elbow pipe for preventing the traction steel wire from being worn is arranged in the traction holes.

[0016] Preferably, at least one group of traction holes is arranged on each wall panel unit.

[0017] The assembling method of the assembled composite wall according to any one of the above, comprises the following steps:

[0018] S1. According to the construction drawings, during the construction of the building foundation, the positioning seat 11 is embedded into the corresponding position in the foundation, and a groove with a width larger than the thickness of the wall panel is reserved on the foundation;

[0019] S2. According to the drawings, the prefabricated main wall panel units 21 and load-bearing wall panel units are numbered in the assembling order, and at the same time, the corresponding limiting steel column units 12 and the required connecting components 3 are completed and numbered correspondingly;

[0020] S3. The numbered corresponding limiting steel column units 12 are firmly inserted into the positioning seat 11 by self-tapping screws, etc., the load-bearing wall unit 21 with the earliest number is lifted by a hoisting tool, the lifting height is greater than the height of the limiting steel column unit 12, and the alignment is guided by the traction steel wire 42, so that the through hole 23 of the load-bearing wall unit 21 is just sleeved on the limiting steel column unit 12 until the bottom edge of the load-bearing wall unit 21 falls into the groove on the foundation, and then the concrete mortar is poured into the groove, and after it solidifies, the installation of the first wall panel is completed;

[0021] S4. Horizontally, close to the first load-bearing wall panel unit 21 that is stably installed in step S3, install the second wall panel unit. The hoisting process is the same as in step S3. Leave an installation position for the connection component 3 between two adjacent wall panels. After the adjacent wall panel units are placed in the foundation trench, first insert the plug-in part 31 and the receiving part 32 into the reserved positions from both sides of the wall panel respectively until the elastic hanging piece 314 and the jack 324 are in a locked state. Pour concrete mortar into the trench and the through hole 23, and pour self-sealing glue into the gap between the adjacent wall panel units where the connecting parts are installed.

[0022] S5. Repeat step S4 until the installation of the first layer of wall panels is completed. Then, connect and install the second-layer limit steel column unit 12 on the limit steel column unit 12 of the first layer, and continue to hoist the wall panel units 2 of the second layer. After that, repeat this step for each layer.

[0023] Advantages of the present invention:

[0024] 1. In the present invention, the precast wall panels are divided into main wall panel units and load-bearing wall panel units. Their internal structures are different, playing the roles of bearing load and reducing weight respectively. And there is no connection structure design on the body of each wall panel unit, so there is no need to specially design load-bearing keels between the wall panels, which can effectively reduce the processing difficulty during production and processing, thereby reducing costs.

[0025] 2. The present invention designs an auxiliary assembly structure and tool. Using the traction holes and traction wires, it is convenient to quickly align during the hoisting process. Compared with the prior art that uses manual assistance for positioning, the labor intensity is reduced. And for using mechanical tools, the operation is simpler. With the cooperation of the limit steel columns, the equipment cost is saved.

[0026] 3. The assembly method of the present invention is more convenient and fast compared with the existing methods, and the assembly accuracy and stability are higher. Description of the Drawings

[0027] Figure 1 It is a structural schematic diagram of an implementation and installation method of the present invention;

[0028] Figure 2 It is a structural schematic diagram of each component unit of the present invention;

[0029] Figure 3 It is a schematic diagram of the internal frame structure of the main wall panel unit of the present invention;

[0030] Figure 4 It is a schematic diagram of the internal frame structure of the load-bearing wall panel unit of the present invention;

[0031] Figure 5Schematic cross-sectional structure diagram of the load-bearing wall panel unit of the present invention (wherein, A is the cross-section of the "plus"-shaped solid reinforcement steel plate, B is the cross-section of the "plus"-shaped hollow reinforcement steel plate, C is the cross-section of the "star"-shaped solid reinforcement steel plate, D is the cross-section of the "star"-shaped hollow reinforcement steel plate);

[0032] Figure 6 Schematic three-dimensional structure diagram of the wall panel unit of the present invention;

[0033] Figure 7 For the present invention Figure 6 Schematic enlarged structure diagram at position E;

[0034] Figure 8 Schematic three-dimensional structure diagram of the connection component of the present invention;

[0035] Figure 9 Schematic cross-sectional structure diagram of the connection state of the connection component of the present invention;

[0036] Figure 10 For the present invention Figure 6 Schematic enlarged structure diagram at position F. Specific embodiments

[0037] For the convenience of understanding by those skilled in the art, the present invention will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the embodiments does not limit the present invention.

[0038] As Figures 1 to 4 shown, the present invention provides an assembled composite wall, which includes a support component 1 for supporting the entire wall, a prefabricated wall panel unit 2, a connection component 3 for connecting and fixing the wall panel unit 2, and an auxiliary component 4 for assisting installation; the wall panel unit 2 includes a main wall panel unit 21 and a load-bearing wall panel unit 22; the main wall panel unit 21 includes a steel bar frame 211 and a waterproof board 212, and further includes a cavity 213 separated by the first steel bar frame 211 and the waterproof board 212. The steel bar frame 211 and the first waterproof board 212 are fixed by a concrete casting mold; the load-bearing wall panel unit 22 includes a second steel bar frame 221 inside the concrete block for defining the frame structure of the entire load-bearing wall panel unit 22. A reinforcement steel plate 222 is fixedly connected inside the second steel bar frame 221, and a second waterproof board 223 is installed on the second steel bar frame 221.

[0039] In this embodiment, this composite wall is composed of four major components: a support assembly 1, a prefabricated wall panel unit 2, a connection assembly 3 for connecting and fixing the wall panel unit 2, and an auxiliary component 4 for assisting installation. The auxiliary component 4 is designed on the wall to facilitate more convenient and rapid grasping and accurate positioning of the installation position of the connection assembly 3 during hoisting. The wall panel unit 2 is divided into a main wall panel unit 21 and a load-bearing wall panel unit 22 for separate casting and processing, optimizing their respective production lines. And it is better to design the load-bearing wall panel unit 22 as a rectangle, which can be installed as horizontal load-bearing or vertical load-bearing according to needs; the main wall panel unit 21 is designed with a cavity structure to minimize the weight of the wall panel. The first waterproof board 212 and the second waterproof board 223 are made of existing lightweight waterproof materials, improving the waterproof effect of the wall panel unit 2 body. The reinforcing steel plate 222 is connected inside the second steel bar framework 221 to enhance the overall load-bearing strength.

[0040] As Figure 3 shown, a heat insulation cotton or a fireproof board is inserted into the cavity 213. In this embodiment, the design of the cavity 213 allows for selectively inserting a heat insulation cotton board or a fireproof board, etc., according to the actual situation of the application site during the installation of the wall, making the building wall more practical.

[0041] As Figure 4 and Figure 5 shown, the cross-section of the reinforcing steel plate 222 is in a "cross" shape or a "rice" shape, and the reinforcing steel plate 222 is integrally formed by casting. In this embodiment, when the cross-section is in a "cross" shape, the vertical pressure-bearing capacity is stronger, and the anti-torsion performance and bending resistance are enhanced. Compared with a pure concrete structure, adding the reinforcing steel plate 222 can make the overall performance of the wall more stable, the connection stronger, and can disperse stress, making it not easy to break and having a higher seismic strength. The "rice" shape design has a stronger load-bearing capacity than the "cross" shape and is more suitable for environments requiring strong stability.

[0042] As Figure 5 shown, the reinforcing steel plate 222 is a hollow plate, and the cross-section of the reinforcing steel plate 222 is in a hollow "cross" shape or a "rice" shape. In this embodiment, compared with a solid and thickened plate, using a hollow plate structure can reduce the weight, and on the premise of ensuring the corresponding strength, it can reduce the material cost and transportation cost, and the installation is also more convenient.

[0043] As Figure 6As shown, the support assembly 1 includes a positioning seat 11 for embedding in the foundation and a limit steel column unit 12 for passing through the wall panel unit 2. Through holes 23 are provided on the main wall panel unit 21 and the load-bearing wall panel unit 22 corresponding to the limit steel column unit 12. The length of the limit steel column unit 12 is greater than the height of one wall panel unit 2 and less than the sum of the heights of two wall panel units 2. In this embodiment, the positioning seat 11 is pre-buried and installed in the foundation. When installing the wall, the limit steel column unit 12 is assembled onto the positioning seat 11 according to the designed position of the wall. During installation, the through hole 23 on the wall panel unit 2 is aligned with the limit steel column and lowered, which facilitates the positioning and installation of the wall panel unit 2, prevents inaccurate installation positions from affecting the structure of the entire building, and at the same time the limit steel column can prevent the wall panel unit from tilting or falling during installation, improving construction safety; considering that the hoisting direction of the load-bearing wall panel unit 22 has horizontal and vertical directions, and the internal structure of the load-bearing wall panel unit 22 is relatively simple, the through hole 23 on the load-bearing wall panel unit 22 can be drilled temporarily at the required position on the construction site. The length of the limit steel column unit 12 is greater than the height of one wall panel unit 2 and less than the sum of the heights of two wall panel units 2. This design can play an auxiliary protective role in preventing fractures at the connection of the wall panel units.

[0044] As Figure 6 and Figure 7 shown, the limit steel column unit 12 includes a bottom plate 121 and a top plate 122. A number of steel bars 123 are connected between the bottom plate 121 and the top plate 122. Mounting holes 124 are provided on both the bottom plate 121 and the top plate 122. Adjacent limit steel column units 12 are tightly connected by inserting bolts into the mounting holes 124. In this embodiment, the design of the bottom plate 121 and the top plate 122 facilitates assembly and connection. Multiple steel bars 123 are used to connect the two, which has a higher connection strength than plate connection and a better supporting effect on the wall panel unit 2. Compared with a concrete column, it is lighter in weight and is more convenient for transportation and installation while ensuring the supporting strength.

[0045] As Figure 8 and Figure 9As shown in the figure, the connection component 3 includes a plug-in part 31 and a receiving part 32; the plug-in part 31 includes a first connecting plate 311, first plug plates 312 are provided on both symmetric sides of the first connecting plate 311, a plurality of plug rods 313 are arranged in parallel on the first connecting plate 311, and elastic hanging pieces 314 are provided at the ends of the plug rods 313; the receiving part 32 includes a second connecting plate 321, second plug plates 322 are provided on both symmetric sides of the second connecting plate 321, a plurality of receiving and inserting columns 323 are arranged in parallel on the second connecting plate 321, insertion holes 324 corresponding to the elastic hanging pieces 314 are provided at the ends of the receiving and inserting columns 323, and a baffle 325 is provided at the opening of the insertion hole 324. Slots 24 are reserved on the main wallboard unit 21 and the load-bearing wallboard unit 22 corresponding to the first plug plate 312 and the second plug plate 322. In this embodiment, when installing the wallboard unit, slots 24 are reserved at the edges of the four sides of the two side surfaces of the main wallboard unit 21 and the load-bearing wallboard unit 22. After any two adjacent units are initially hoisted, a set of plug-in parts 31 and receiving parts 32 are respectively located on the two side surfaces of the wallboard. The first plug plate 312 of the plug-in part 31 and the second plug plate 322 of the receiving part 32 are respectively inserted into the corresponding slots 24. At this time, the plug rods 313 and the receiving and inserting columns 323 are simultaneously inserted into the gap between two adjacent wallboards until the elastic hanging pieces 314 enter the insertion holes 324 to complete one-way connection and fixation, and the baffle 325 can prevent the elastic hanging pieces 314 from coming out. Then, a self-sealing glue is injected into the gap by using a tool to complete the tight connection.

[0046] As Figure 10 shown, the auxiliary part 4 includes a traction hole 41 respectively formed through between the side and the side surface of the wallboard unit 2, and further includes a traction wire 42 detachably installed in the traction hole 41, and a bent pipe 43 for preventing the traction wire from being worn is provided in the traction hole 42. In this embodiment, the bending degree of the traction hole 41 is greater than 90°. The bent pipe 43 is fixedly placed on the mold during the wallboard pouring and then formed by pouring. When installing, the traction holes 41 of two adjacent wallboard units 2 are connected by the traction wire 42, and an external force is applied to pull the traction wire 42 so that the two adjacent wallboard units 2 can find their positions more quickly. The bent pipe 43 can be used not only for forming but also for reducing the frictional resistance between the traction wire, making the installation process smoother, and reducing the wear of the traction wire 42, which is beneficial for repeated use. After completing the positioning and traction work, the traction hole 42 is filled with concrete mortar.

[0047] As Figure 10As shown, at least one set of traction holes 41 is provided on each of the wall panel units 2. In this embodiment, one set of traction holes 41 is provided at the upper and lower positions in the vertical direction on one wall panel unit 2, which is convenient for connecting two adjacent wall panel units 2 with traction wires 42 and then pulling them to the correct positions during the splicing and installation. Preferably, the positions of the traction holes 41 are near the through holes 23 on the wall panels, which is more convenient for the insertion of the limit steel column units 12. Since the load-bearing wall panel units 22 need to be used horizontally or vertically according to actual needs, preferably, one set of traction holes 41 is provided in the directions of the four sides of the load-bearing wall panel units 22.

[0048] Assembly Embodiment 1

[0049] S1. According to the construction drawings, during the construction of the building foundation, the positioning seats 11 are pre-buried at the corresponding positions in the foundation, and a groove with a width greater than the thickness of the wall panel is reserved on the foundation.

[0050] S2. According to the drawings, the prefabricated main wall panel units 21 and load-bearing wall panel units are numbered in the assembly order. At the same time, the corresponding limit steel column units 12 and the required connection components 3 are completed and numbered correspondingly.

[0051] S3. The numbered limit steel column units 12 are firmly inserted into the positioning seats 11 by self-tapping screws, etc. The load-bearing wall unit 21 with the earliest number is lifted by a lifting tool, and the lifting height is greater than the height of the limit steel column unit 12. The position is aligned by guiding with the traction wire 42, so that the through hole 23 of the load-bearing wall unit 21 just sleeves on the limit steel column unit 12 until the bottom edge of the load-bearing wall unit 21 falls into the groove on the foundation. Then, the concrete mortar is poured into the groove, and after it solidifies, the installation of the first wall panel is completed.

[0052] S4. Horizontally, the second wall panel unit is installed close to the first load-bearing wall panel unit 21 installed stably in step S3. The hoisting process is the same as that in step S3. An installation position for the connection component 3 is reserved between two adjacent wall panels. When the adjacent wall panel units are in the foundation groove, the plug-in parts 31 and the receiving parts 32 are respectively inserted into the reserved positions from both sides of the wall panel until the elastic hanging pieces 314 and the jacks 324 are in a locked state. Then, the concrete mortar is poured into the groove and the through hole 23, and the self-sealing glue is poured into the gap between the adjacent wall panel units where the connection parts are installed.

[0053] S5. Repeat step S4 until the installation of the first layer of wall panels is completed. Then, the second layer of limit steel column units 12 is connected and installed on the limit steel column units 12 of the first layer, and the wall panel units 2 of the second layer are continued to be hoisted. After that, this step is repeated for each layer.

[0054] Assembly Embodiment 2

[0055] When applied to a building designed with an independent load-bearing beam, holes are drilled in the first connecting plate 311 and the second connecting plate 321 of the connecting member 3, and the first connecting plate 311 and the second connecting plate 321 are fixedly connected to the independent load-bearing beam by using bolts or the like. The first insertion plate 312 and the second insertion plate 322 on one side of the independent load-bearing beam can be selectively cut off according to actual structural needs.

[0056] Assembly Embodiment 2

[0057] As Figure 1 shown, when the load-bearing wall unit 22 is assembled horizontally, new through holes 23 are opened at appropriate positions on the load-bearing wall unit 22 for the limited insertion of the steel column unit 12. A connecting component 3 with a suitable length is selected to ensure that at least two main wall units 21 can be locked and connected to one load-bearing wall unit 22, strengthening the assembly stability.

[0058] All technical features in this embodiment can be modified in appearance according to actual needs.

[0059] The above embodiments are the preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution of the present invention is within the protection scope of the present invention.

Claims

1. Prefabricated composite wall, characterized in that: It includes a support component (1) for supporting the entire wall, a prefabricated wall panel unit (2), a connection component (3) for connecting and fixing the wall panel unit (2), and an auxiliary component (4) for assisting in installation; The wall panel unit (2) includes a main wall panel unit (21) and a load-bearing wall panel unit (22); The main wall panel unit (21) includes a steel bar framework (211) and a waterproof board (212), and further includes a cavity (213) separated by the first steel bar framework (211) and the waterproof board (212). The steel bar framework (211) and the first waterproof board (212) are fixed by a concrete casting mold; The load-bearing wall panel unit (22) includes a second steel bar framework (221) inside the concrete block for defining the frame structure of the entire load-bearing wall panel unit (22). A reinforcing steel plate (222) is fixedly connected inside the second steel bar framework (221), and a second waterproof board (223) is installed on the second steel bar framework (221).

2. The prefabricated composite wall according to claim 1, wherein: Heat insulation cotton or fireproof board is inserted into the cavity (213).

3. The prefabricated composite wall according to claim 2, characterized in that: The cross-section of the reinforcing steel plate (222) is in the shape of a "plus" sign or a "rice" sign, and the reinforcing steel plate (222) is integrally formed by casting.

4. The prefabricated composite wall according to claim 2, characterized in that: The reinforcing steel plate (222) is a hollow plate, and the cross-section of the reinforcing steel plate (222) is in the shape of a hollow "plus" sign or a "rice" sign.

5. The prefabricated composite wall and assembly method according to claim 1, characterized in that: The support component (1) includes a positioning seat (11) for being buried in the foundation and a limit steel column unit (12) for passing through the wall panel unit (2). Through holes (23) are provided on the main wall panel unit (21) and the load-bearing wall panel unit (22) corresponding to the limit steel column unit (12). The length of the limit steel column unit (12) is greater than the height of one wall panel unit (2) and less than the sum of the heights of two wall panel units (2).

6. The prefabricated composite wall and assembly method according to claim 5, characterized in that: The limit steel column unit (12) includes a bottom plate (121) and a top plate (122). A plurality of steel bars (123) are connected between the bottom plate (121) and the top plate (122). Installation holes (124) are provided on both the bottom plate (121) and the top plate (122). Adjacent limit steel column units (12) are tightly connected by inserting bolts into the installation holes (124).

7. The prefabricated composite wall according to claim 1, characterized in that: The connection component (3) includes a plug-in component (31) and a receiving component (32); The plug-in component (31) includes a first connection plate (311). First plug plates (312) are provided on both symmetric sides of the first connection plate (311). A plurality of plug rods (313) are arranged in parallel on the first connection plate (311). Elastic hanging pieces (314) are provided at the ends of the plug rods (313); The receiving component (32) includes a second connection plate (321). Second plug plates (322) are provided on both symmetric sides of the second connection plate (321). A plurality of socket columns (323) are arranged in parallel on the second connection plate (321). Sockets (324) corresponding to the elastic hanging pieces (314) are provided at the ends of the socket columns (323). A baffle (325) is provided at the opening of the socket (324); On the main wall panel unit (21) and the load-bearing wall panel unit (22), slots (24) are reserved corresponding to the first plug board (312) and the second plug board (322).

8. The prefabricated composite wall and assembly method according to claim 1, characterized in that: The auxiliary part (4) includes a traction hole (41) respectively formed through between the side and the side surface of the wall panel unit (2), and further includes a traction steel wire (42) detachably installed in the traction hole (41). A bent pipe (43) for preventing the traction steel wire from being worn is arranged in the traction hole (41).

9. The prefabricated composite wall and assembly method according to claim 8, characterized in that: At least one set of traction holes (41) is arranged on each wall panel unit (2).

10. The assembly method of the prefabricated composite wall according to any one of claims 1-9, characterized in that: It includes the following steps: S1. According to the construction drawings, during the construction of the building foundation, the positioning seat 11 is pre-buried at the corresponding position in the foundation, and a groove with a width greater than the wall panel thickness is reserved on the foundation; S2. According to the drawings, the prefabricated main wall panel units 21 and load-bearing wall panel units are numbered according to the assembly sequence. At the same time, the corresponding limit steel column units 12 and the required connecting components 3 are completed and numbered correspondingly; S3. The numbered limit steel column unit 12 is tightly inserted into the positioning seat 11 by using self-tapping screws, etc. The load-bearing wall unit 21 with the earliest number is lifted by using a lifting tool, and the lifting height is greater than the height of the limit steel column unit 12. The alignment is guided by the traction steel wire 42, so that the through hole 23 of the load-bearing wall unit 21 is just sleeved on the limit steel column unit 12 until the bottom edge of the load-bearing wall unit 21 falls into the groove on the foundation. Then, concrete mortar is poured into the groove, and after it solidifies, the installation of the first wall panel is completed; S4. Horizontally, close to the first load-bearing wall panel unit 21 installed stably in step S3, the second wall panel unit is installed. The hoisting process is the same as that in step S3. An installation position for the connecting component 3 is reserved between two adjacent wall panels. When the adjacent wall panel units are in the foundation groove, the plug-in part 31 and the receiving part 32 are respectively inserted into the reserved positions from both sides of the wall panel until the elastic hanging piece 314 and the jack 324 are in a locked state. Then, concrete mortar is poured into the groove and the through hole 23, and self-sealing glue is poured into the gap between the adjacent wall panel units where the connecting piece is installed; S5. Repeat step S4 until the installation of the first layer of wall panels is completed. Then, the second layer of limit steel column units 12 is connected and installed on the limit steel column units 12 of the first layer, and the wall panel units 2 of the second layer are continuously hoisted. After that, this step is repeated for each layer.

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