Prefabricated slab foundation brick moulding bed structure

Abstract

The utility model discloses a precast slab foundation brick moulding bed structure, which belongs to the technical field of foundation brick moulding beds, and comprises a foundation bottom cushion layer, a first transverse foundation inner cushion layer, a second transverse foundation inner cushion layer, a first longitudinal foundation inner cushion layer, a second longitudinal foundation inner cushion layer and an anchoring steel plate, the structure is novel in design and ingenious, by arranging the joggling grooves and the protruding blocks, rapid splicing installation between the first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer and between the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer is facilitated, the installation efficiency is improved, meanwhile, the structure has high stability, and the service life of the structure is prolonged. The use effect after installation is ensured, the problems of leakage and the like at the abutted seam of the plates can be avoided by arranging the reinforcing corner net, the waterproof effect can be further improved by arranging the reinforcing inner net, the mortar layer is divided into the corner area and the inner side area, and the key protection effect can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of basic brick formwork, and in particular to a precast slab basic brick formwork structure. Background Art

[0002] In the patent with the published authorization announcement number CN217204198U, a precast slab basic brick formwork structure is disclosed, which includes a basic bottom cushion layer, a first building groove, a longitudinal basic inner cushion layer, a second building groove and reinforcing steel bars. A first building groove is opened on the basic bottom cushion layer, a longitudinal basic inner cushion layer is arranged on the first building groove, a transverse basic inner cushion layer is connected to the longitudinal basic inner cushion layer, a first central hole is opened on the transverse basic inner cushion layer, a mortise joint groove is opened on the longitudinal basic inner cushion layer, an anchor plate is arranged on the transverse basic inner cushion layer, a reinforcing mesh is arranged on the inner side of the longitudinal basic inner cushion layer, and a mortar layer is arranged on the outer layer of the reinforcing mesh. This precast slab basic brick formwork structure designs the traditional brick-built formwork into a precast integral hollow board, which can realize factory batch production and industrialized hoisting, and can speed up the construction speed. Wedge-shaped connection design is carried out at the vertical corners and joint parts of the precast hollow board to increase the stiffness and sealing performance of the formwork.

[0003] The overall strength of the precast slab basic brick formwork structure in the above patent needs to be improved, and the strength needs to be further reinforced in subsequent projects. Therefore, a large amount of time and energy are required, which reduces the project progress.

[0004] Therefore, this application proposes a precast slab basic brick formwork structure. Summary of the Utility Model

[0005] A precast slab basic brick formwork structure proposed in this application aims to solve the problems raised in the above background art. By setting mortise joint grooves and bumps, it is beneficial for the quick splicing and installation between the first transverse basic inner cushion layer and the second transverse basic inner cushion layer and the first longitudinal basic inner cushion layer and the second longitudinal basic inner cushion layer. While improving the installation efficiency, the structure has strong stability to ensure the use effect after installation. By arranging reinforcing corner meshes on the inner sides of the first transverse basic inner cushion layer, the second transverse basic inner cushion layer, the first longitudinal basic inner cushion layer and the second longitudinal basic inner cushion layer, problems such as leakage at the seams of the plate members can be avoided, and by arranging reinforcing inner meshes, the waterproof effect can be further improved. By arranging a mortar layer on the outer layers of the reinforcing corner meshes and the reinforcing inner meshes, and dividing the mortar layer into a corner area and an inner area, the effect of key protection can be achieved.

[0006] In order to achieve the above purpose, this application adopts the following technical solutions:

[0007] A precast slab foundation brick formwork structure includes a foundation bottom cushion layer, a first transverse foundation inner cushion layer, a second transverse foundation inner cushion layer, a first longitudinal foundation inner cushion layer, a second longitudinal foundation inner cushion layer, and an anchor steel plate. The first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer are distributed in an up-and-down manner, and both the first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer are arranged on the top of the foundation bottom cushion layer. The second transverse foundation inner cushion layer and the first longitudinal foundation inner cushion layer are distributed in a left-and-right manner, and both the second transverse foundation inner cushion layer and the first longitudinal foundation inner cushion layer are arranged on the top of the foundation bottom cushion layer. The first transverse foundation inner cushion layer is fixedly connected to the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer through the anchor steel plate, and the second transverse foundation inner cushion layer is fixedly connected to the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer through the anchor steel plate.

[0008] As a preferred embodiment, a plurality of first central holes are formed inside the first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer, and each of the first central holes is horizontally distributed inside the first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer;

[0009] By forming the first central holes on the first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer, the opening can ensure the water circulation inside and outside the brick formwork, avoiding damage caused by water accumulation. This is crucial for protecting the foundation structure from water erosion, ensuring the stability and durability of the structure, and thus enhancing the practicality of the device.

[0010] As a preferred embodiment, a plurality of second central holes are formed inside the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer, and each of the second central holes is vertically distributed inside the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer;

[0011] By forming the second central holes on the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer, the appropriate opening design can promote air circulation, prevent mold growth or other damages caused by excessive humidity inside the brick formwork, and thus maintain the good state of the brick formwork. Due to factors such as geological conditions and temperature changes, the structure may undergo minor deformations. The openings can allow these minor deformations to occur, reduce stress concentration, protect the foundation part from damage, and thus enhance the practicality of the device.

[0012] As a preferred embodiment, a plurality of first reinforcement steel bars are provided on the first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer, and each of the first reinforcement steel bars is inserted between the first central holes;

[0013] By arranging the first reinforcing steel bars in the first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer, the bearing capacity, seismic performance of the building structure can be improved, and the service life can be extended. By increasing the number of steel bars in the structure or changing the layout of the steel bars, the bearing capacity and seismic performance of the structure can be significantly improved. The addition of steel bars can make up for the defect of the weak tensile capacity of concrete, thereby improving the overall stability and safety of the structure, and thus enhancing the practicality of the device.

[0014] As a preferred implementation manner, second reinforcing steel bars are arranged inside the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer, and each of the second reinforcing steel bars is inserted between the second central holes;

[0015] By arranging the second reinforcing steel bars in the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer, the toughness of the structure can also be improved, the risk of cracks or damage generated under the action of external forces can be reduced, which helps to prevent the collapse of the structure during disasters. By enhancing the strength and stability of the structure, the reinforcing steel bars can extend the service life of the building or structure, ensuring the safety and durability of the building, and thus enhancing the practicality of the device.

[0016] As a preferred implementation manner, a plurality of mortise joints are formed inside the first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer, and a plurality of bumps are arranged on the second transverse foundation inner cushion layer and the first longitudinal foundation inner cushion layer, and one side of each bump away from the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer extends into the mortise joint;

[0017] By arranging the mortise joints and the bumps, it is beneficial to the rapid splicing and installation between the first transverse foundation inner cushion layer and the second transverse foundation inner cushion layer and the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer. While improving the installation efficiency, the structure has strong stability, ensuring the use effect after installation, and thus enhancing the practicality of the device.

[0018] As a preferred implementation manner, reinforcing angle meshes are respectively arranged between the first transverse foundation inner cushion layer and the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer, and reinforcing angle meshes are respectively arranged between the second transverse foundation inner cushion layer and the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer. Reinforcing inner meshes are arranged on the inner sides of the first transverse foundation inner cushion layer, the second transverse foundation inner cushion layer, the first longitudinal foundation inner cushion layer and the second longitudinal foundation inner cushion layer, and each of the reinforcing inner meshes is connected with the reinforcing angle mesh;

[0019] By arranging a reinforcing corner net on the inner sides of the first and second transverse foundation inner cushions and the first and second longitudinal foundation inner cushions, problems such as leakage at the joints of the plate members can be avoided, and arranging a reinforcing inner net can further improve the waterproof effect, thereby enhancing the practicality of the device.

[0020] As a preferred implementation manner, a mortar layer is arranged on the inner sides of each of the reinforcing corner nets and the reinforcing inner nets. The mortar layer includes a corner area and an inner area. Each corner area is arranged inside the reinforcing corner net, and each inner area is arranged inside the reinforcing inner net;

[0021] By arranging a mortar layer on the outer layers of the reinforcing corner nets and the reinforcing inner nets, and the mortar layer is divided into a corner area and an inner area, the effect of key protection can be achieved, thereby enhancing the practicality of the device.

[0022] Advantages of this application:

[0023] 1. By arranging tenon joints and bumps in this precast slab foundation brick formwork structure, it is beneficial to the rapid splicing and installation between the first and second transverse foundation inner cushions and the first and second longitudinal foundation inner cushions. While improving the installation efficiency, this structure has strong stability, ensuring the use effect after installation, and greatly enhancing the practicality of the device;

[0024] 2. In this precast slab foundation brick formwork structure, by arranging a reinforcing corner net on the inner sides of the first and second transverse foundation inner cushions and the first and second longitudinal foundation inner cushions, problems such as leakage at the joints of the plate members can be avoided, and arranging a reinforcing inner net can further improve the waterproof effect. By arranging a mortar layer on the outer layers of the reinforcing corner nets and the reinforcing inner nets, and the mortar layer is divided into a corner area and an inner area, the effect of key protection can be achieved, greatly enhancing the practicality of the device. Description of the drawings

[0025] Figure 1 It is a main body schematic diagram of the device of this application;

[0026] Figure 2 It is a top view schematic diagram of the device of this application;

[0027] Figure 3 For this application Figure 2 The enlarged view at A in the figure.

[0028] Reference numerals in the figure: 1, basic bottom cushion; 2, first transverse inner cushion of the foundation; 3, second transverse inner cushion of the foundation; 4, first longitudinal inner cushion of the foundation; 5, second longitudinal inner cushion of the foundation; 6, first central hole; 7, second central hole; 8, first reinforcing steel bar; 9, second reinforcing steel bar; 10, mortise joint groove; 11, convex block; 12, anchor plate; 13, reinforcing angle net; 14, reinforcing inner net; 15, mortar layer; 16, corner area; 17, inner area. Specific implementation mode

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0030] Refer to Figures 1-3 , a precast slab foundation brick formwork structure, including a basic bottom cushion 1, a first transverse inner cushion 2 of the foundation, a second transverse inner cushion 3 of the foundation, a first longitudinal inner cushion 4 of the foundation, a second longitudinal inner cushion 5 of the foundation and an anchor plate 12. The first transverse inner cushion 2 and the second transverse inner cushion 3 are distributed in an up-and-down manner, and both the first transverse inner cushion 2 and the second transverse inner cushion 3 are arranged on the top of the basic bottom cushion 1. The second transverse inner cushion 3 and the first longitudinal inner cushion 4 are distributed in a left-and-right manner, and both the second transverse inner cushion 3 and the first longitudinal inner cushion 4 are arranged on the top of the basic bottom cushion 1. The first transverse inner cushion 2 is fixedly connected to the first longitudinal inner cushion 4 and the second longitudinal inner cushion 5 through the anchor plate 12, and the second transverse inner cushion 3 is fixedly connected to the first longitudinal inner cushion 4 and the second longitudinal inner cushion 5 through the anchor plate 12.

[0031] A plurality of first central holes 6 are opened inside the first transverse inner cushion 2 and the second transverse inner cushion 3, and each first central hole 6 is horizontally distributed inside the first transverse inner cushion 2 and the second transverse inner cushion 3; by opening the first central holes 6 on the first transverse inner cushion 2 and the second transverse inner cushion 3, the opening can ensure the water circulation inside and outside the brick formwork, avoiding damage caused by water accumulation, which is crucial for protecting the foundation structure from water erosion and ensuring the stability and durability of the structure, thereby improving the practicability of the device.

[0032] A plurality of second central holes 7 are provided inside the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5, and each second central hole 7 is vertically distributed inside the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5; By providing the second central holes 7 on the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5, an appropriate hole-opening design can promote air circulation, prevent mold growth or other damages inside the brick formwork due to excessive humidity, thereby maintaining the good condition of the brick formwork. Due to factors such as geological conditions and temperature changes, the structure may undergo minor deformations. The holes can allow these minor deformations to occur, reduce stress concentration, protect the foundation part from damage, and thus improve the practicality of the device.

[0033] A plurality of first reinforcing steel bars 8 are provided in the first transverse foundation inner cushion layer 2 and the second transverse foundation inner cushion layer 3, and each first reinforcing steel bar 8 is inserted between the first central holes 6; By providing the first reinforcing steel bars 8 in the first transverse foundation inner cushion layer 2 and the second transverse foundation inner cushion layer 3, the bearing capacity, seismic performance of the building structure can be improved, and the service life can be extended. The reinforcing steel bars can significantly improve the bearing capacity and seismic performance of the structure by increasing the number of steel bars in the structure or changing the layout of the steel bars. The addition of steel bars can make up for the defect of the weak tensile capacity of concrete, thereby improving the overall stability and safety of the structure, and thus improving the practicality of the device.

[0034] Second reinforcing steel bars 9 are provided inside the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5, and each second reinforcing steel bar 9 is inserted between the second central holes 7; By providing the second reinforcing steel bars 9 inside the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5, the reinforcing steel bars can also improve the toughness of the structure, reduce the risk of cracks or damage when subjected to external forces, and help prevent the collapse of the structure during disasters. By enhancing the strength and stability of the structure, the reinforcing steel bars can extend the service life of the building or structure, ensuring the safety and durability of the building, and thus improving the practicality of the device.

[0035] A plurality of tenon joints 10 are provided inside the first transverse foundation inner cushion layer 2 and the second transverse foundation inner cushion layer 3, and a plurality of bumps 11 are provided on the second transverse foundation inner cushion layer 3 and the first longitudinal foundation inner cushion layer 4, and one side of each bump 11 away from the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5 extends into the tenon joint 10; By providing the tenon joints 10 and the bumps 11, it is beneficial for the quick splicing and installation between the first transverse foundation inner cushion layer 2 and the second transverse foundation inner cushion layer 3 and the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5. While improving the installation efficiency, this structure has strong stability, ensuring the use effect after installation, and thus improving the practicality of the device.

[0036] Reinforcing corner meshes 13 are respectively arranged between the first transverse foundation inner cushion layer 2 and the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5, and between the second transverse foundation inner cushion layer 3 and the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5. Reinforcing inner meshes 14 are arranged on the inner sides of the first transverse foundation inner cushion layer 2, the second transverse foundation inner cushion layer 3, the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5. Each reinforcing inner mesh 14 is connected to the reinforcing corner mesh 13. By arranging the reinforcing corner mesh 13 on the inner sides of the first transverse foundation inner cushion layer 2, the second transverse foundation inner cushion layer 3, the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5, problems such as leakage at the joints of the plate members can be avoided, and the waterproof effect can be further improved by arranging the reinforcing inner mesh 14, thereby enhancing the practicability of the device.

[0037] Mortar layers 15 are arranged on the inner sides of each reinforcing corner mesh 13 and reinforcing inner mesh 14. The mortar layer 15 includes a corner area 16 and an inner area 17. Each corner area 16 is arranged on the inner side of the reinforcing corner mesh 13, and each inner area 17 is arranged on the inner side of the reinforcing inner mesh 14. By arranging the mortar layer 15 on the outer layers of the reinforcing corner mesh 13 and the reinforcing inner mesh 14, and the mortar layer 15 is divided into the corner area 16 and the inner area 17, the effect of key protection can be achieved, thereby enhancing the practicability of the device.

[0038] Working principle: By opening first central holes 6 in the first transverse foundation inner cushion layer 2 and the second transverse foundation inner cushion layer 3, the opening can ensure the water circulation inside and outside the brick formwork, avoiding damage caused by water accumulation. This is crucial for protecting the foundation structure from water erosion and ensuring the stability and durability of the structure.

[0039] By opening second central holes 7 in the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5, an appropriate opening design can promote air circulation, prevent mold growth or other damages inside the brick formwork caused by excessive humidity, thereby maintaining the good state of the brick formwork. Due to factors such as geological conditions and temperature changes, the structure may undergo minor deformations. The openings can allow these minor deformations to occur, reduce stress concentration, and protect the foundation part from damage.

[0040] ‌By arranging first reinforcing steel bars 8 in the first transverse foundation inner cushion layer 2 and the second transverse foundation inner cushion layer 3, the bearing capacity, seismic performance of the building structure can be improved, and the service life can be extended. The reinforcing steel bars can significantly improve the bearing capacity and seismic performance of the structure by increasing the number of steel bars in the structure or changing the layout of the steel bars. The addition of steel bars can make up for the defect of the relatively weak tensile capacity of concrete, thereby improving the overall stability and safety of the structure.

[0041] By arranging the second reinforcing steel bars 9 in the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5, the reinforcing steel bars can also improve the toughness of the structure, reduce the risk of cracks or damage under external forces, help prevent the structural collapse during disasters, and by enhancing the strength and stability of the structure, the reinforcing steel bars can extend the service life of the building or structure, ensuring the safety and durability of the building.

[0042] By arranging the mortise grooves 10 and the bumps 11, it is beneficial to the rapid splicing and installation between the first transverse foundation inner cushion layer 2 and the second transverse foundation inner cushion layer 3 and the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5. While improving the installation efficiency, the structure has strong stability, ensuring the use effect after installation.

[0043] By arranging the reinforcing angle nets 13 on the inner sides of the first transverse foundation inner cushion layer 2 and the second transverse foundation inner cushion layer 3 and the first longitudinal foundation inner cushion layer 4 and the second longitudinal foundation inner cushion layer 5, problems such as leakage at the plate joint can be avoided, and arranging the reinforcing inner nets 14 can further improve the waterproof effect.

[0044] By arranging the mortar layer 15 on the outer layers of the reinforcing angle nets 13 and the reinforcing inner nets 14, and the mortar layer 15 is divided into a corner area 16 and an inner area 17, the effect of key protection can be achieved.

[0045] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and the inventive concept of the present application, makes equivalent replacements or changes, and should be covered within the protection scope of the present application.

Claims

1. A precast slab foundation brick formwork structure, comprising a foundation bottom cushion layer (1), a first transverse foundation inner cushion layer (2), a second transverse foundation inner cushion layer (3), a first longitudinal foundation inner cushion layer (4), a second longitudinal foundation inner cushion layer (5) and an anchor steel plate (12), characterized in that, The first transverse foundation inner cushion layer (2) and the second transverse foundation inner cushion layer (3) are distributed one above the other, and both the first transverse foundation inner cushion layer (2) and the second transverse foundation inner cushion layer (3) are arranged on the top of the foundation bottom cushion layer (1). The second transverse foundation inner cushion layer (3) and the first longitudinal foundation inner cushion layer (4) are distributed side by side, and both the second transverse foundation inner cushion layer (3) and the first longitudinal foundation inner cushion layer (4) are arranged on the top of the foundation bottom cushion layer (1). The first transverse foundation inner cushion layer (2) is fixedly connected to the first longitudinal foundation inner cushion layer (4) and the second longitudinal foundation inner cushion layer (5) through an anchor plate (12), and the second transverse foundation inner cushion layer (3) is fixedly connected to the first longitudinal foundation inner cushion layer (4) and the second longitudinal foundation inner cushion layer (5) through the anchor plate (12).

2. The precast slab foundation brick formwork structure according to claim 1, characterized in that, A plurality of first central holes (6) are formed inside the first transverse foundation inner cushion layer (2) and the second transverse foundation inner cushion layer (3), and each of the first central holes (6) is horizontally distributed inside the first transverse foundation inner cushion layer (2) and the second transverse foundation inner cushion layer (3).

3. A precast slab foundation brick formwork structure according to claim 1, characterized in that, A plurality of second central holes (7) are formed inside the first longitudinal foundation inner cushion layer (4) and the second longitudinal foundation inner cushion layer (5), and each of the second central holes (7) is vertically distributed inside the first longitudinal foundation inner cushion layer (4) and the second longitudinal foundation inner cushion layer (5).

4. A precast slab foundation brick formwork structure according to claim 1, characterized in that, A plurality of first reinforcing bars (8) are arranged in the first transverse foundation inner cushion layer (2) and the second transverse foundation inner cushion layer (3), and each of the first reinforcing bars (8) is inserted between the first central holes (6).

5. A precast slab foundation brick formwork structure according to claim 1, characterized in that, A second reinforcing bar (9) is arranged inside the first longitudinal foundation inner cushion layer (4) and the second longitudinal foundation inner cushion layer (5), and each of the second reinforcing bars (9) is inserted between the second central holes (7).

6. The precast slab foundation brick formwork structure according to claim 1, characterized in that, A plurality of tenon joints (10) are formed inside the first transverse foundation inner cushion layer (2) and the second transverse foundation inner cushion layer (3), and a plurality of convex blocks (11) are arranged on the second transverse foundation inner cushion layer (3) and the first longitudinal foundation inner cushion layer (4), and one side of each of the convex blocks (11) away from the first longitudinal foundation inner cushion layer (4) and the second longitudinal foundation inner cushion layer (5) extends into the tenon joint (10).

7. A precast slab foundation brick formwork structure according to claim 1, characterized in that, Reinforcing angle meshes (13) are respectively arranged between the first transverse foundation inner cushion layer (2), the first longitudinal foundation inner cushion layer (4) and the second longitudinal foundation inner cushion layer (5), and reinforcing angle meshes (13) are respectively arranged between the second transverse foundation inner cushion layer (3), the first longitudinal foundation inner cushion layer (4) and the second longitudinal foundation inner cushion layer (5). Reinforcing inner meshes (14) are arranged on the inner sides of the first transverse foundation inner cushion layer (2), the second transverse foundation inner cushion layer (3), the first longitudinal foundation inner cushion layer (4) and the second longitudinal foundation inner cushion layer (5), and each of the reinforcing inner meshes (14) is connected to the reinforcing angle mesh (13).

8. A precast slab foundation brick formwork structure according to claim 7, characterized in that, A mortar layer (15) is provided on the inner side of each of the reinforcing corner meshes (13) and the reinforcing inner meshes (14). The mortar layer (15) includes a corner area (16) and an inner area (17). Each of the corner areas (16) is provided on the inner side of the reinforcing corner mesh (13), and each of the inner areas (17) is provided on the inner side of the reinforcing inner mesh (14).

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