Fabricated multi-layer lightweight concrete sandwich wallboard structure system and construction method

Abstract

The invention discloses an assembly type multi-layer lightweight concrete sandwich wallboard structure system, which relates to an assembly type multi-layer building and comprises lightweight concrete sandwich prefabricated wallboards, vertical corner prefabricated members and fully prefabricated hollow floor slabs, the lightweight concrete sandwich prefabricated wall panel and the vertical corner prefabricated part are connected in an anchoring mode through a vertical anchoring connecting section, a prefabricated bracket is arranged on one side of the lightweight concrete sandwich prefabricated wall panel, and the full-prefabricated hollow floor slab is arranged on the prefabricated bracket. The fully-prefabricated hollow floor slabs and the lightweight concrete sandwich prefabricated wallboards are anchored and connected through the horizontal cast-in-place sections of the fully-prefabricated hollow floor slabs, and every two adjacent layers of lightweight concrete sandwich prefabricated wallboards and vertical corner prefabricated parts are fixedly clamped through buckle type connecting parts. The invention further discloses a construction method of the fabricated multi-layer lightweight concrete sandwich wallboard structure system. Connection joints are simple and convenient, grouting connection is not needed, the prefabricated horizontal members do not need temporary supports, the on-site pouring amount is small, and the stress performance is good.

Description

Technical Field

[0001] The invention relates to an assembled multi-story building, and more particularly to an assembled multi-story lightweight concrete sandwich wall panel structural system and a construction method. Background Art

[0002] The multi-layer wall panel structure is a very widely used structural system in construction projects, in which the wall panels are both retaining walls or internal partitions and load-bearing structures. They are used for the maintenance and separation of buildings, and are also used to bear vertical loads and horizontal effects.

[0003] At present, the construction methods of multi-layer wall panel structures are generally divided into two types: "cast-in-place" and "assembly". "Cast-in-place" is a traditional wet construction method, that is, tying steel bars, setting up formwork and brackets, injecting concrete into the formwork and vibrating it to make it dense, and removing the formwork when the concrete reaches a certain strength; "assembly" is a new construction method adapted to the development of building industrialization, that is, manufacturing prefabricated wall panels in the factory and reserving connection devices, and properly connecting the upper and lower prefabricated wall panels through the reserved connection devices at the construction site.

[0004] Compared with the traditional cast-in-place structural system, the prefabricated wall panel structural system has the advantages of reducing on-site workload, higher mechanized assembly, and factory production. Therefore, more and more low-rise and multi-story buildings adopt prefabricated wall panel structures to save construction time, save manpower, reduce material consumption, reduce on-site waste emissions, and achieve the purpose of energy conservation and environmental protection.

[0005] The existing prefabricated wall panel structure system generally uses prefabricated shear walls as vertical load-bearing components and ordinary concrete, which is heavy, making it difficult to hoist and taking a long time. At the same time, the vertical connection of the existing prefabricated wall panel structure system generally uses grouting sleeve connection technology, grout anchor connection technology, steel bar welding lap technology and steel bar steel plate welding connection technology.

[0006] The grouting sleeve connection technology requires more sleeves due to the large number of vertical distributed steel bars in each prefabricated shear wall, which has high material costs. It is necessary to grout in each sleeve, which is time-consuming and the grouting quality cannot be tested. The slurry anchor connection technology requires a lot of spiral hoops, which has high material costs. Each spiral hoop needs to be embedded in an accurate position and grouting needs to be poured into the sleeve. This approach is difficult and time-consuming. The steel bar welding lap technology and steel bar steel plate welding connection technology are due to the large number of steel bars, high welding costs, and time-consuming.

[0007] In addition, during the construction of the existing prefabricated wall panel structure system, the prefabricated horizontal components can only be placed on the prefabricated shear wall protective layer. However, due to the limited thickness of the protective layer, it is impossible to form an effective temporary construction support for the prefabricated horizontal components. Therefore, during construction, a large number of scaffoldings need to be erected below to support the prefabricated horizontal components, which wastes the broad construction work space under the floor slab and requires manpower and material resources to erect the scaffolding, slowing down the construction progress and increasing the construction cost.

[0008] Therefore, it is necessary to design an assembled multi-layer lightweight concrete sandwich wall panel structural system and construction method to solve the above problems. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide an assembled multi-layer lightweight concrete sandwich wall panel structural system and a construction method in view of the deficiencies in the prior art. The connection nodes are simple, no grouting connection is required, the prefabricated horizontal components do not require temporary supports, the on-site casting volume is small, and the stress-bearing performance is good.

[0010] The assembled multi-layer lightweight concrete sandwich wall panel structural system described in the present invention comprises lightweight concrete sandwich prefabricated wall panels, vertical corner prefabricated parts, vertical anchoring connection sections, fully prefabricated hollow floor panels, and horizontal cast-in-place sections of fully prefabricated hollow floor panels; the lightweight concrete sandwich prefabricated wall panels and the vertical corner prefabricated parts are anchored and connected via the vertical anchoring connection sections, a prefabricated corbel is provided on one side of the lightweight concrete sandwich prefabricated wall panels, the fully prefabricated hollow floor panels are arranged on the prefabricated corbel, and the fully prefabricated hollow floor panels and the lightweight concrete sandwich prefabricated wall panels are anchored and connected via the horizontal cast-in-place sections of the fully prefabricated hollow floor panels, and the lightweight concrete sandwich prefabricated wall panels and the vertical corner prefabricated parts of two adjacent layers are fixedly connected via snap-on connectors.

[0011] Preferably, the vertical anchoring connection section is provided with horizontal distribution steel bars, horizontal anchoring steel bars, horizontal tie steel bars and vertical anchoring steel bars; the horizontal distribution steel bars are fixedly connected to the lightweight concrete sandwich prefabricated wall panels, the horizontal anchoring steel bars are fixedly connected to the vertical corner prefabricated parts, and the horizontal distribution steel bars and the horizontal anchoring steel bars are arranged one by one in the horizontal direction; the horizontal tie steel bars are arranged between the two layers of horizontal distribution steel bars and horizontal anchoring steel bars in the vertical anchoring connection section, and the vertical anchoring steel bars are vertically inserted into two steel bar rings formed by the horizontal tie steel bars and the horizontal distribution steel bars and by the horizontal tie steel bars and the horizontal anchoring steel bars.

[0012] Preferably, the horizontal distribution steel bars are anchored in the lightweight concrete sandwich prefabricated wall panels, extend out of the lightweight concrete sandwich prefabricated wall panels in the horizontal direction, and then extend into the vertical anchoring connection section to form a U-shaped steel bar ring; the horizontal anchoring steel bars are anchored in the vertical corner prefabricated parts, extend out of the vertical corner prefabricated parts in the horizontal direction, and then extend into the vertical anchoring connection section to form a U-shaped steel bar ring.

[0013] Preferably, the snap-on connectors include snap-on connectors and snap-on connectors; a plurality of snap-on connectors are fixed at the bottom of the lightweight concrete sandwich prefabricated wall panels and the vertical corner prefabricated parts, a plurality of snap-on connectors are fixed at the top of the lightweight concrete sandwich prefabricated wall panels and the vertical corner prefabricated parts, and the snap-on connectors and snap-on connectors are arranged in one-to-one correspondence.

[0014] Preferably, the lightweight concrete sandwich prefabricated wall panels are provided with longitudinal stress-bearing steel bars, longitudinal structural steel bars and horizontal distribution steel bars, which form a steel grid of the lightweight concrete sandwich prefabricated wall panels, and card-type connectors are fixed below the longitudinal stress-bearing steel bars, and buckle-type connectors are fixed above the longitudinal stress-bearing steel bars.

[0015] Preferably, the vertical corner prefabricated component is provided with longitudinal main stress-bearing steel bars and horizontal anchoring steel bars, and the longitudinal main stress-bearing steel bars and horizontal anchoring steel bars form a steel grid of the vertical corner prefabricated component, and buckle-type connectors are fixed above the longitudinal main stress-bearing steel bars, and card-type connectors are fixed below the longitudinal main stress-bearing steel bars.

[0016] Preferably, the lightweight concrete sandwich prefabricated wall panels of two adjacent layers and the vertical corner prefabricated components of two adjacent layers are provided with structural adhesive.

[0017] Preferably, the horizontal cast-in-place section of the fully prefabricated hollow floor slab is a cast-in-place groove above the prefabricated corbel of the lightweight concrete sandwich prefabricated wall panel, the groove is provided with exposed longitudinal stress-bearing steel bars and longitudinal structural steel bars, the side walls of the fully prefabricated hollow floor slab are provided with connecting steel bars, and the fully prefabricated hollow floor slab is anchored and connected to the longitudinal stress-bearing steel bars and longitudinal structural steel bars through the connecting steel bars at the horizontal cast-in-place section of the fully prefabricated hollow floor slab.

[0018] Preferably, the lightweight concrete sandwich prefabricated wall panel is provided with a plurality of energy-saving, heat-insulating and weight-reducing blocks.

[0019] A construction method using the assembled multi-layer lightweight concrete sandwich wall panel structure system, the method comprising the following steps:

[0020] The first step is to hoist the lightweight concrete sandwich prefabricated wall panels and vertical corner prefabricated parts to the predetermined position and fix them;

[0021] The second step is to hoist the fully prefabricated hollow floor slab onto the prefabricated corbels of the lightweight concrete sandwich prefabricated wall panels, and complete the assembly of the fully prefabricated hollow floor slab;

[0022] The third step is to put the horizontal tie steel bars and the vertical anchor steel bars in the vertical anchor connection section, tie them at the predetermined position for fixation, and then tie the steel bars in the horizontal cast-in-place section of the fully prefabricated hollow slab at the predetermined position for fixation;

[0023] Step 4: Formwork is supported and sealed on both sides of the vertical anchoring connection section, and the vertical anchoring connection section and the horizontal cast-in-place section of the fully prefabricated hollow floor slab are cast;

[0024] Step 5: Apply structural adhesive on the upper part of the lightweight concrete sandwich prefabricated wall panel and the vertical corner prefabricated component;

[0025] Step 6: Continue to hoist the lightweight concrete sandwich prefabricated wall panels and vertical corner prefabricated parts, and insert the card-type connectors at the bottom of the currently hoisted lightweight concrete sandwich prefabricated wall panels and vertical corner prefabricated parts into the buckle-type connectors at the top of the already constructed lower lightweight concrete sandwich prefabricated wall panels and vertical corner prefabricated parts;

[0026] Step 7. After connecting and fixing the vertical anchor steel bars in the upper and lower layers, proceed to step 2 until the building is completed.

[0027] Beneficial Effects

[0028] The advantages of the present invention are:

[0029] 1. The use of prefabricated brackets and snap-on connectors solves the problems of a large number of traditional temporary supports and formwork required in the post-casting area during the construction of the wall panel structure system, reduces labor and material waste, and improves construction efficiency. In addition, by using cast-in-place lightweight concrete connections between lightweight concrete sandwich prefabricated wall panels and vertical corner prefabricated parts, a new prefabricated wall panel structure system with good stress performance is formed, which greatly improves the quality of the building, promotes the innovative development of the prefabricated structure system, and has great economic and practical value.

[0030] 2. By adopting lightweight concrete wall panels and setting energy-saving, heat-insulating and weight-reducing blocks inside, the weight of the prefabricated wall panel structure system is reduced, the construction and hoisting speed is accelerated, and the thermal insulation performance during the use of the building is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional schematic diagram of the structural system of the present invention;

[0032] Figure 2It is a three-dimensional schematic diagram of the lightweight concrete sandwich prefabricated wall panel of the present invention;

[0033] Figure 3 is a three-dimensional schematic diagram of the vertical corner prefabricated component of the present invention;

[0034] Figure 4 It is a partial three-dimensional schematic diagram of the vertical anchoring connection section of the present invention;

[0035] Figure 5 It is a partial three-dimensional schematic diagram of the prefabricated corbel of the present invention;

[0036] Figure 6 It is an exploded schematic diagram of a node of a snap-on connector of the present invention;

[0037] Figure 7 It is a partial three-dimensional schematic diagram of the connection node of the upper and lower lightweight concrete sandwich prefabricated wall panels of the present invention;

[0038] Figure 8 It is a partial three-dimensional schematic diagram of the connection node of the upper and lower vertical corner prefabricated members of the present invention.

[0039] Attached figure identification: 1. Lightweight concrete sandwich prefabricated wall panel; 2. Vertical corner prefabricated parts; 3. Vertical anchor connection section; 4. Fully prefabricated hollow floor slab; 5. Fully prefabricated hollow floor slab horizontal cast-in-place section; 6. Longitudinal force-bearing steel bars; 7. Longitudinal structural steel bars; 8. Clip-on connectors; 9. Energy-saving, heat-insulating and weight-reducing blocks; 10. Horizontal distribution steel bars; 11. Prefabricated corbels; 12. Longitudinal main force-bearing steel bars; 13. Horizontal anchoring steel bars; 14. Clip-on connectors; 15. Buckle connectors; 16. Horizontal tie bars; 17. Vertical anchoring steel bars; 18. Corbel anchor bars; 19. Structural adhesive. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the embodiments, but it does not constitute any limitation to the present invention. Any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0041] See also Figure 1-Figure 8The assembled multi-layer lightweight concrete sandwich wall panel structural system of the present invention comprises a lightweight concrete sandwich prefabricated wall panel 1, a vertical corner prefabricated component 2, a vertical anchoring connection section 3, a fully prefabricated hollow floor slab 4, and a fully prefabricated hollow floor slab horizontal cast-in-place section 5. The lightweight concrete sandwich prefabricated wall panel 1 and the vertical corner prefabricated component 2 are anchored and connected by the vertical anchoring connection section 3. One side of the lightweight concrete sandwich prefabricated wall panel 1 is provided with a prefabricated corbel 11 cast in one piece with the lightweight concrete sandwich prefabricated wall panel 1. The fully prefabricated hollow floor slab 4 is arranged on the prefabricated corbel 11 to provide support for the fully prefabricated hollow floor slab 4. The fully prefabricated hollow floor slab 4 is anchored and connected to the lightweight concrete sandwich prefabricated wall panel 1 by the fully prefabricated hollow floor slab horizontal cast-in-place section 5. The lightweight concrete sandwich prefabricated wall panels 1 and the vertical corner prefabricated components 2 of two adjacent layers are fixedly connected by snap-on connectors 8. With such a structure, when constructing the structural system, only the vertical anchoring connection section 3 and the horizontal cast-in-place section 5 of the fully prefabricated hollow floor slab need to be cast on site in each layer, which greatly reduces the area of ​​on-site casting and improves the construction efficiency. In addition, the lightweight concrete sandwich prefabricated wall panels 1 and the vertical corner prefabricated parts 2 in the two adjacent layers are cast at the same time in the vertical anchoring connection section 3 through the snap-on connector 8 to form an integrated support, which can improve the construction speed between layers while ensuring the reliability of the structural system.

[0042] The lightweight concrete sandwich prefabricated wall panel 1 of this embodiment is provided with longitudinal stress-bearing steel bars 6, longitudinal structural steel bars 7 and horizontal distribution steel bars 10, which form a steel grid of the lightweight concrete sandwich prefabricated wall panel 1. After pouring concrete, the lightweight concrete sandwich prefabricated wall panel 1 can be formed. A card-type connector 14 is fixed below the longitudinal stress-bearing steel bars 6, and a buckle-type connector 15 is fixed above the longitudinal stress-bearing steel bars 6, which are used to realize the connection of the lightweight concrete sandwich prefabricated wall panels 1 between layers.

[0043] like Figure 1 , Figure 3 , Figure 6 and Figure 8 As shown, the vertical corner prefabricated member 2 in this embodiment is a connector required for connecting the lightweight concrete sandwich prefabricated wall panel 1, and is a main load-bearing member, and is provided with longitudinal main load-bearing steel bars 12 and horizontal anchor steel bars 13 inside. Among them, the longitudinal main load-bearing steel bars 12 and the horizontal anchor steel bars 13 form a steel grid of the vertical corner prefabricated member 2, and the prefabricated vertical corner prefabricated member 2 can be formed after pouring concrete. A buckle-type connector 15 is fixed above the longitudinal main load-bearing steel bars 12, and a card-type connector 14 is fixed below the longitudinal main load-bearing steel bars 12, which is used to realize the connection of the vertical corner prefabricated members 2 between layers.

[0044] Regarding the snap-on connector 8 in this embodiment, it includes a male snap-on connector and a female snap-on connector. The snap-on connector 14 is a male snap-on connector, and the snap-on connector 15 is a female snap-on connector. A plurality of snap-on connectors 14 are fixed below the lightweight concrete sandwich prefabricated wall panel 1 and the vertical corner prefabricated component 2, and a plurality of snap-on connectors 15 are fixed above the lightweight concrete sandwich prefabricated wall panel 1 and the vertical corner prefabricated component 2, and the snap-on connectors 14 and the snap-on connectors 15 are arranged one by one. Specifically, for the male snap-on connector, it should be located on the outer surface of the lightweight concrete sandwich prefabricated wall panel 1 and / or the vertical corner prefabricated component 2; and for the female snap-on connector, it is embedded in the lightweight concrete sandwich prefabricated wall panel 1 and / or the vertical corner prefabricated component 2, and its end face is exposed. Such a connection method can achieve fast and reliable assembly between layers.

[0045] In addition, structural adhesive 19 is provided on the lightweight concrete sandwich prefabricated wall panels 1 of two adjacent layers and the vertical corner prefabricated components 2 of two adjacent layers to ensure that the joints are leak-proof.

[0046] The vertical anchoring connection section 3 of this embodiment is provided with horizontal distribution steel bars 10, horizontal anchoring steel bars 13, horizontal tie steel bars 16 and vertical anchor steel bars 17. The horizontal distribution steel bars 10 are fixedly connected to the lightweight concrete sandwich prefabricated wall panel 1, and the horizontal anchor steel bars 13 are fixedly connected to the vertical corner prefabricated component 2. The horizontal distribution steel bars 10 and the horizontal anchor steel bars 13 are arranged one by one in the horizontal direction. The horizontal tie steel bars 16 are arranged between the two layers of horizontal distribution steel bars 10 and the horizontal anchor steel bars 13 in the vertical anchoring connection section 3, and the vertical anchor steel bars 17 are vertically inserted into the two steel bar rings formed by the horizontal tie steel bars 16 and the horizontal distribution steel bars 10 and the horizontal tie steel bars 16 and the horizontal anchor steel bars 13. Such a structure can ensure the reliability of the connection between the lightweight concrete sandwich prefabricated wall panel 1 and the vertical corner prefabricated component 2.

[0047] Specifically, in the vertical anchoring connection section 3, the horizontal distribution steel bars 10 are anchored in the lightweight concrete sandwich prefabricated wall panel 1, and extend out of the lightweight concrete sandwich prefabricated wall panel 1 in the horizontal direction, and then extend into the vertical anchoring connection section 3 to form a U-shaped steel bar ring; the horizontal anchoring steel bars 13 are anchored in the vertical corner prefabricated part 2, and extend out of the vertical corner prefabricated part 2 in the horizontal direction, and then extend into the vertical anchoring connection section 3 to form a U-shaped steel bar ring.

[0048] The fully prefabricated hollow slab horizontal cast-in-place section 5 is a cast-in-place groove above the prefabricated corbel 11 of the lightweight concrete sandwich prefabricated wall panel 1, in which there are exposed longitudinal stress-bearing steel bars 6 and longitudinal structural steel bars 7. Connecting steel bars are provided on the side walls of the fully prefabricated hollow slab 4. The fully prefabricated hollow slab 4 is anchored and connected to the longitudinal stress-bearing steel bars 6 and longitudinal structural steel bars 7 in the fully prefabricated hollow slab horizontal cast-in-place section 5 through the connecting steel bars. After pouring, a reinforced concrete structure can be formed in the fully prefabricated hollow slab horizontal cast-in-place section 5, ensuring the integrity and reliability of this position.

[0049] In this embodiment, a plurality of energy-saving, heat-insulating and weight-reducing blocks 9 are provided in the lightweight concrete sandwich prefabricated wall panel 1, which are arranged at regular intervals to provide heat-insulating and shock-absorbing functions.

[0050] A construction method using the assembled multi-layer lightweight concrete sandwich wall panel structure system, the method comprising the following steps:

[0051] The first step is to hoist the lightweight concrete sandwich prefabricated wall panel 1 and the vertical corner prefabricated component 2 to the predetermined position and fix them;

[0052] Step 2: hoist the fully prefabricated hollow floor slab 4 onto the prefabricated corbels 11 of the lightweight concrete sandwich prefabricated wall panel 1, and complete the assembly of the fully prefabricated hollow floor slab 4;

[0053] The third step is to place the horizontal tie steel bars 16 and the vertical anchor steel bars 17 in the vertical anchor connection section 3, and tie them at the predetermined position for fixing, and then tie the steel bars in the horizontal cast-in-place section 5 of the fully prefabricated hollow slab at the predetermined position for fixing;

[0054] Step 4: Formwork is supported and sealed on both sides of the vertical anchoring connection section 3, and the vertical anchoring connection section 3 and the horizontal cast-in-place section 5 of the fully prefabricated hollow floor slab are cast;

[0055] Step 5: Apply structural adhesive 19 on the lightweight concrete sandwich prefabricated wall panel 1 and the vertical corner prefabricated component 2;

[0056] Step 6: Continue to hoist the lightweight concrete sandwich prefabricated wall panels 1 and the vertical corner prefabricated components 2, and insert the card-type connectors at the bottom of the currently hoisted lightweight concrete sandwich prefabricated wall panels 1 and the vertical corner prefabricated components 2 into the buckle-type connectors at the top of the already installed lower lightweight concrete sandwich prefabricated wall panels 1 and the vertical corner prefabricated components 2;

[0057] Step 7: After the vertical anchoring steel bars 17 in the upper and lower layers are connected and fixed, the second step is executed until the construction of the building is completed.

[0058] The thickness of the lightweight concrete sandwich prefabricated wall panels 1, the vertical corner prefabricated parts 2 and the fully prefabricated hollow floor slabs 4 in the present invention is determined according to actual needs, but should not be less than 180 mm, and double-layer reinforcement should be adopted, and the energy-saving, heat-insulating and weight-reducing blocks 9 are evenly arranged between the steel bar spacings, while ensuring the overall stiffness and stress-bearing performance, reducing the weight of the components, and ensuring that there is enough space for the pre-embedding of equipment pipelines.

[0059] Preferably, the energy-saving, heat-insulating and weight-reducing block 9 is made of heat-insulating XPS extruded board. This type of material has good heat-insulating properties, is light in texture, is easy to use, has good stability, and is common and easy to find.

[0060] Preferably, the four sides of the fully prefabricated hollow slab should be provided with upslope openings to ensure the pouring of the horizontal cast-in-place section of the fully prefabricated hollow slab.

[0061] Preferably, the fully prefabricated hollow-core floor slabs 4 are arranged alternately vertically and horizontally.

[0062] Preferably, the overhanging length of the prefabricated corbel should not be less than 200 mm to ensure that the prefabricated floor slab has sufficient support.

[0063] Preferably, the lightweight concrete sandwich prefabricated wall panel 1 and the vertical corner prefabricated component 2 have an outer concrete protective layer of the vertical anchoring connection section, and serve as an outer formwork when pouring the vertical anchoring connection section.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. The assembled multi-layer lightweight concrete sandwich wall panel structure system is characterized by: The invention comprises a lightweight concrete sandwich prefabricated wall panel (1), a vertical corner prefabricated component (2), a vertical anchoring connection section (3), a fully prefabricated hollow floor slab (4), and a fully prefabricated hollow floor slab horizontal cast-in-place section (5); the lightweight concrete sandwich prefabricated wall panel (1) and the vertical corner prefabricated component (2) are anchored and connected via the vertical anchoring connection section (3); a prefabricated corbel (11) is provided on one side of the lightweight concrete sandwich prefabricated wall panel (1); the fully prefabricated hollow floor slab (4) is arranged on the prefabricated corbel (11); the fully prefabricated hollow floor slab (4) and the lightweight concrete sandwich prefabricated wall panel (1) are anchored and connected via the fully prefabricated hollow floor slab horizontal cast-in-place section (5); the lightweight concrete sandwich prefabricated wall panels (1) and the vertical corner prefabricated components (2) of two adjacent layers are fixedly connected via snap-on connectors (8).

2. The assembled multi-layer lightweight concrete sandwich wall panel structure system according to claim 1 is characterized in that: The vertical anchoring connection section (3) is provided with horizontal distribution steel bars (10), horizontal anchoring steel bars (13), horizontal tie steel bars (16) and vertical anchoring steel bars (17); the horizontal distribution steel bars (10) are fixedly connected to the lightweight concrete sandwich prefabricated wall panel (1); the horizontal anchoring steel bars (13) are fixedly connected to the vertical corner prefabricated component (2); and the horizontal distribution steel bars (10) and the horizontal anchoring steel bars (13) are arranged one by one in the horizontal direction; the horizontal tie steel bars (16) are arranged between the two layers of horizontal distribution steel bars (10) and horizontal anchoring steel bars (13) in the vertical anchoring connection section (3); and the vertical anchoring steel bars (17) are vertically inserted into two steel bar rings formed by the horizontal tie steel bars (16) and the horizontal distribution steel bars (10) and the horizontal tie steel bars (16) and the horizontal anchoring steel bars (13).

3. The assembled multi-layer lightweight concrete sandwich wall panel structure system according to claim 2 is characterized in that: The horizontal distribution steel bars (10) are anchored in the lightweight concrete sandwich prefabricated wall panel (1), extend out of the lightweight concrete sandwich prefabricated wall panel (1) in the horizontal direction, and then extend into the vertical anchoring connection section (3) to form a U-shaped steel bar ring; the horizontal anchoring steel bars (13) are anchored in the vertical corner prefabricated component (2), extend out of the vertical corner prefabricated component (2) in the horizontal direction, and then extend into the vertical anchoring connection section (3) to form a U-shaped steel bar ring.

4. The assembled multi-layer lightweight concrete sandwich wall panel structure system according to claim 1, characterized in that: The snap-on connector (8) comprises a snap-on connector (14) and a buckle connector (15); a plurality of snap-on connectors (14) are fixed below the lightweight concrete sandwich prefabricated wall panel (1) and the vertical corner prefabricated component (2), and a plurality of buckle connectors (15) are fixed above the lightweight concrete sandwich prefabricated wall panel (1) and the vertical corner prefabricated component (2), and the snap-on connectors (14) and the buckle connectors (15) are arranged in a one-to-one correspondence.

5. The assembled multi-layer lightweight concrete sandwich wall panel structure system according to claim 4 is characterized in that: The lightweight concrete sandwich prefabricated wall panel (1) is provided with longitudinal stress-bearing steel bars (6), longitudinal structural steel bars (7) and horizontal distribution steel bars (10), and the longitudinal stress-bearing steel bars (6), longitudinal structural steel bars (7) and horizontal distribution steel bars (10) form a steel grid of the lightweight concrete sandwich prefabricated wall panel (1), a card-type connector (14) is fixed below the longitudinal stress-bearing steel bars (6), and a buckle-type connector (15) is fixed above the longitudinal stress-bearing steel bars (6).

6. The assembled multi-layer lightweight concrete sandwich wall panel structure system according to claim 4, characterized in that: The vertical corner prefabricated component (2) is provided with longitudinal main stress-bearing steel bars (12) and horizontal anchoring steel bars (13), and the longitudinal main stress-bearing steel bars (12) and the horizontal anchoring steel bars (13) form a steel mesh frame of the vertical corner prefabricated component (2), and a buckle-type connector (15) is fixed above the longitudinal main stress-bearing steel bars (12), and a card-type connector (14) is fixed below the longitudinal main stress-bearing steel bars (12).

7. The assembled multi-layer lightweight concrete sandwich wall panel structure system according to claim 1 or 4, characterized in that: The lightweight concrete sandwich prefabricated wall panels (1) of two adjacent layers and the vertical corner prefabricated components (2) of two adjacent layers are provided with a structural adhesive (19).

8. The assembled multi-layer lightweight concrete sandwich wall panel structure system according to claim 5, characterized in that: The fully prefabricated hollow slab horizontal cast-in-place section (5) is a cast-in-place groove above the prefabricated corbel (11) of the lightweight concrete sandwich prefabricated wall panel (1), wherein the groove contains exposed longitudinal stress-bearing steel bars (6) and longitudinal structural steel bars (7), and the side walls of the fully prefabricated hollow slab (4) are provided with connecting steel bars, and the fully prefabricated hollow slab (4) is anchored and connected to the longitudinal stress-bearing steel bars (6) and the longitudinal structural steel bars (7) at the fully prefabricated hollow slab horizontal cast-in-place section (5) via the connecting steel bars.

9. The assembled multi-layer lightweight concrete sandwich wall panel structure system according to claim 1, characterized in that: The lightweight concrete sandwich prefabricated wall panel (1) is provided with a plurality of energy-saving, heat-insulating and weight-reducing blocks (9).

10. A construction method using the assembled multi-layer lightweight concrete sandwich wall panel structure system according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: The first step is to hoist the lightweight concrete sandwich prefabricated wall panel (1) and the vertical corner prefabricated component (2) to a predetermined position and fix them; The second step is to hoist the fully prefabricated hollow floor slab (4) onto the prefabricated corbel (11) of the lightweight concrete sandwich prefabricated wall panel (1), and complete the assembly of the fully prefabricated hollow floor slab (4); Step 3: Place the horizontal tie steel bars (16) and the vertical anchor steel bars (17) in the vertical anchor connection section (3), and tie them to the predetermined position for fixation, and then tie the steel bars in the horizontal cast-in-place section (5) of the fully prefabricated hollow slab to the predetermined position for fixation; Step 4: Formwork is used to seal both sides of the vertical anchoring connection section (3), and the vertical anchoring connection section (3) and the fully prefabricated hollow slab horizontal cast-in-place section (5) are cast; Step 5: Applying a structural adhesive (19) on the upper side of the lightweight concrete sandwich prefabricated wall panel (1) and the vertical corner prefabricated component (2); Step 6: Continue to hoist the lightweight concrete sandwich prefabricated wall panels (1) and the vertical corner prefabricated components (2), and insert the card-type connectors (14) at the bottom of the currently hoisted lightweight concrete sandwich prefabricated wall panels (1) and the vertical corner prefabricated components (2) into the buckle-type connectors (15) at the top of the already constructed lightweight concrete sandwich prefabricated wall panels (1) and the vertical corner prefabricated components (2) at the lower layer; Step 7: After the vertical anchoring steel bars (17) in the upper and lower layers are connected and fixed, the second step is performed until the construction of the building is completed.

Images