Net column multi-layer composite repairing wall block for old outer wall

Abstract

The utility model discloses a net column multi-layer composite repairing wall block for an old outer wall, and relates to the technical field of outer wall repairing. A steel mesh is arranged on the outer side wall of the first composite cement layer, a second composite cement layer is installed on the outer side wall of the steel mesh, a heat preservation structural body is arranged on the outer side wall of the second composite cement layer, a pressure-resistant plate is arranged on the outer side wall of the heat preservation structural body, a decorative coating is arranged on the outer side wall of the pressure-resistant plate, and a waterproof layer is arranged on the outer side wall of the decorative coating. The four threaded sleeve bodies are arranged at the four corners in the first composite cement layer, the steel mesh and the second composite cement layer correspondingly, and one end of each fixed column body is installed in the corresponding threaded sleeve body; according to the utility model, the thermal insulation structural body is adopted to improve the thermal insulation property after repairing, meanwhile, the pressure-resistant plate is adopted to improve the overall strength, the decorative coating is adopted to realize decoration, and the waterproof layer is adopted to improve the waterproof property; according to the repairing wall block, the original old wall body is connected through the fixing column body, the phenomenon that the repairing wall block falls off is not prone to occurring after connection, and the stability after installation can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of exterior wall repair, and in particular relates to a grid column multi-layer composite repair wall block for old exterior walls. Background Art

[0002] The old buildings are multi-storey buildings with brick-concrete structures, and the exterior wall structure is solid or porous bricks. The surface layer is exterior wall paint. Affected by multiple factors such as foundation settlement and rainwater penetration, the facades of the walls of old blocks are prone to deformation, cracking or partial detachment. Among them, there are three main reasons for the macro cracks in concrete structures. The first is caused by external loads, which is the most common situation, that is, caused by the main stress calculated according to the convention; the second is cracks caused by structural secondary stress, which is caused by the difference between the actual working state of the structure and the calculation assumption model; the third is cracks caused by deformation stress, which is caused by temperature, shrinkage, expansion, uneven settlement and other factors. When the deformation is constrained, stress is generated, and when this stress exceeds the tensile strength of concrete, cracks are generated. When a concrete structure is deformed, the internal structure and between structures will be affected and restricted by each other. This phenomenon is called constraint. When the cross-section of the concrete structure is thick, the temperature and humidity distribution inside it are uneven, causing the deformation of different parts inside to constrain each other. Such constraints are called internal constraints; when the deformation of a structure is hindered by other structures, the constraints it is subject to are called external constraints. External constraints can be divided into free body, full constraint and elastic constraint. The deformation of large-volume concrete structures in construction projects is mainly caused by temperature difference and shrinkage.

[0003] In large-volume concrete structures in construction projects, due to the large structural cross-section and high cement consumption, the hydration heat released by cement hydration will produce large temperature changes and shrinkage effects. The resulting temperature shrinkage stress is the main cause of cracks in reinforced concrete. There are two types of cracks: surface cracks and through cracks. Surface cracks are caused by different heat dissipation conditions on the surface and inside of the concrete, with low temperatures on the outside and high temperatures on the inside, forming a temperature gradient, which causes compressive stress inside the concrete and tensile stress on the surface. The tensile stress on the surface exceeds the tensile strength of the concrete. Through cracks are caused by the deformation caused by the temperature difference when the strength of large-volume concrete reaches a certain level, and the concrete gradually cools down. The tensile stress caused by the volume shrinkage deformation caused by the loss of water in the concrete, and the tensile stress caused by the constraints of the foundation and other structural boundary conditions, exceeds the tensile strength of the concrete, which may cause cracks that penetrate the entire cross-section. These two types of cracks are harmful cracks to varying degrees, and both need to be reinforced and repaired in a timely manner. If the wall with local damage, cracks or partial detachment is not repaired in time, the wall will be at risk of collapse. The existing wall repair has the following problems:

[0004] 1. Use cement to directly fill the damaged part. After filling, the connection strength or filling quality between the cement and the original old wall is not firm, which may easily lead to subsequent falling off and hollowing. Although the repair process takes a short time, the effect of adapting to the outdoor wall is poor. It is easy to crack after being exposed to the sun later, and the repair effect cannot be achieved.

[0005] Second, the repair wall blocks are bonded to the original old walls. However, the bonding between the repair wall blocks and the original old walls is not strong, and they are prone to fall off under high temperatures, and cannot achieve both waterproof and heat-insulating performance. Utility Model Content

[0006] To solve the problems mentioned in the above background technology, the purpose of the utility model is to provide a multi-layer composite wall block for repairing old exterior walls, which can achieve thermal insulation and pressure resistance, is not prone to falling off after installation, and has high stability.

[0007] The utility model discloses a mesh column multi-layer composite repair wall block for old exterior walls, comprising a composite cement layer one, a steel mesh, a composite cement layer two, a thermal insulation structure, a pressure-resistant plate, a decorative coating, a waterproof layer, a screw sleeve body, and a fixed column body; a steel mesh is arranged on the outer wall of the composite cement layer one, a composite cement layer two is installed on the outer wall of the steel mesh, a thermal insulation structure is arranged on the outer wall of the composite cement layer two, a pressure-resistant plate is arranged on the outer wall of the thermal insulation structure, a decorative coating is arranged on the outer wall of the pressure-resistant plate, and a waterproof layer is arranged on the outer wall of the decorative coating; four screw sleeve bodies are respectively arranged at four corners inside the composite cement layer one, the steel mesh, and the composite cement layer two, and one end of the fixed column body is installed inside the screw sleeve body.

[0008] As a preferred solution, the composite cement layer 1 and the composite cement layer 2 are plates cast from a mixture of cement and glue.

[0009] As a preferred embodiment: the insulation structure is a mesh column structure, which includes an insulation board, an external connecting net, an internal connecting net, a plurality of first connecting columns and a plurality of second connecting columns; the inner wall of the insulation board is bonded with the inner connecting net, the outer wall of the insulation board is bonded with the outer connecting net, a plurality of first connecting columns are passed between the external connecting net and the insulation board, and a plurality of second connecting columns are passed between the inner connecting net and the insulation board.

[0010] As a preferred solution, the first connecting column is a hollow column, and a plurality of through holes are formed on the outer wall of the first connecting column, and the through holes are connected to the inner hole of the first connecting column.

[0011] As a preferred solution, concave fixing glue grooves are provided on the four side walls of the pressure-resistant plate.

[0012] As a preferred solution, an internal connecting threaded hole is provided inside the screw sleeve body, and an inner concave fixing groove is provided on the outer side wall of the screw sleeve body.

[0013] As a preferred solution, the fixing column includes a connecting stud, a fixing column, and a fixing undercut body; the front end of the connecting stud is integrally connected to the fixing column, and a plurality of fixing undercut bodies are connected to the outer side wall of the fixing column.

[0014] As a preferred solution, a conical guide head is provided at the front end of the fixing column.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model is a multi-layer composite grid column structure for repairing and reinforcing a part of a wall. Through the cooperation between the composite cement layer 1, the steel mesh, the composite cement layer 2, the thermal insulation structure, the compression plate, the decorative coating, the waterproof layer, the screw sleeve body and the fixed column, the repair process of penetrating and filling the position to be repaired of the original old wall and combining comprehensive fitting can be realized. The specific advantages are:

[0017] 1. Use insulation structure to improve thermal insulation after repair, use compression plate to improve overall strength, use decorative coating to achieve decoration, and use waterproof layer to improve waterproofness, to ensure that the wall position after repair has both strength, thermal insulation and waterproof performance and meets the reinforcement design requirements.

[0018] Second, the repair wall blocks are connected to the original old walls by fixing the columns. After the connection, it is not easy to fall off or crack, which can improve the stability after installation. It can retain the original old wall structure while performing local repair or large-area repair as needed. The use of this utility model is conducive to improving the fast and durable repair capabilities of old communities, and can also be used for temporary reinforcement and repair of dangerous buildings, improving the rapid response and processing capabilities of comprehensive repair and transformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the thermal insulation structure in the utility model;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the first connecting column in the utility model;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the compression plate in the utility model;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the screw sleeve body in the utility model;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the fixed column in the utility model. In order to more clearly show the outer circumferential wall of the fixed column, a row of fixed undercut bodies is removed in the figure.

[0026] In the figure: 1-composite cement layer 1; 2-steel mesh; 3-composite cement layer 2; 4-insulation structure; 5-pressure-resistant plate; 6-decorative coating; 7-waterproof layer; 8-screw sleeve; 9-fixed column;

[0027] 4-1- insulation board; 4-2- external connection net; 4-3- internal connection net; 4-4- first connection column; 4-5- second connection column;

[0028] 4-41-through hole;

[0029] 5-1-Fix the glue groove;

[0030] 8-1-internal connection threaded hole; 8-2-fixing groove;

[0031] 9-1-connecting stud; 9-2-fixing column; 9-3-fixing undercut body;

[0032] 9-21-conical guide head;

[0033] 10-Original old wall. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0035] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0036] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this specific implementation adopts the method of heat preservation, pressure resistance and waterproof to improve the heat preservation, strength and waterproofness, and specifically adopts the following technical scheme: it includes a composite cement layer 1, a steel mesh 2, a composite cement layer 3, a heat preservation structure 4, a pressure-resistant plate 5, a decorative coating 6, and a waterproof layer 7; a steel mesh 2 is arranged on the outer wall of the composite cement layer 1, and the steel mesh 2 is used to improve the connection strength between the composite cement layer 1 and the composite cement layer 2 3, a composite cement layer 2 3 is installed on the outer wall of the steel mesh 2, and a heat preservation structure 4 is arranged on the outer wall of the composite cement layer 2 3, and the heat preservation The thermal insulation structure 4 can achieve thermal insulation and improve the thermal insulation after repair. A compression plate 5 is arranged on the outer wall of the thermal insulation structure 4. The compression plate 5 can improve the compression resistance and improve the overall strength. A decorative coating 6 is arranged on the outer wall of the compression plate 5. The decorative coating 6 is consistent with the outer coating of the original exterior wall, which is convenient for decoration. A waterproof layer 7 is arranged on the outer wall of the decorative coating 6. The waterproof layer 7 can achieve waterproofing. The waterproof layer 7 is an organic waterproof coating. The composite cement layer 1 and the composite cement layer 2 3 are plates cast with a mixture of cement and glue, so that the strength of the plate is high.

[0037] Combination Figure 2 As shown, the insulation structure 4 is a grid column structure, which includes an insulation board 4-1, an external connection net 4-2, an internal connection net 4-3, a plurality of first connection columns 4-4 and a plurality of second connection columns 4-5; the inner wall of the insulation board 4-1 is bonded with the inner connection net 4-3, the outer wall of the insulation board 4-1 is bonded with the outer connection net 4-2, a plurality of first connection columns 4-4 are passed through between the outer connection net 4-2 and the insulation board 4-1, and a plurality of second connection columns 4-5 are passed through between the inner connection net 4-3 and the insulation board 4-1, wherein the first connection column 4-4 is passed through between the outer connection net 4-2 and the insulation board 4-1, and the connection mode and construction process of the second connection column 4-5 are the same as those of the first connection column 4-4. The column 4-5 is passed through the inner connection net 4-3 and the insulation board 4-1, and the connection method and construction process are the same. The first connection column 4-4 is internally connected to the insulation board 4-1 by adhesive bonding. In order to improve the connection strength, the first connection column 4-4 is respectively connected to the inner part of the pressure-resistant plate 5 and the composite cement layer 23, so it is not easy to separate during long-term use. The pressure-resistant plate 5 and the insulation structure 4 are bonded by adhesive and hot-pressed and pressurized by a hot press. When the insulation structure 4 is connected to the composite cement layer 23, when the composite cement layer 23 is poured, the insulation structure 4 can be placed on top, and they will be integrated after the composite cement layer 23 solidifies.

[0038] Furthermore, the first connecting column 4-4 is a solid column or a hollow column, which is determined according to the size of the repair area of ​​the original old wall 10. When the repair area of ​​the original old wall 10 is large and occupies at least more than half of the entire wall surface, the first connecting column 4-4 is a hollow column; when the repair area of ​​the original old wall 10 is small and occupies less than half of the total wall surface area, the first connecting column 4-4 is a solid column.

[0039] Combination Figure 3 As shown, when the first connecting column 4-4 is a hollow column, a plurality of through holes 4-41 are provided on the outer wall of the first connecting column 4-4. The through holes 4-41 can be filled with glue or cement during connection to improve the strength of the connection. The through holes 4-41 are connected to the inner hole of the first connecting column 4-4. Figure 4 As shown, the four side walls of the anti-compression plate 5 are all provided with concave fixing glue grooves 5 - 1 , and the fixing glue grooves 5 - 1 can be injected with sealant to ensure the sealing between the anti-compression plate 5 and the original old wall 10 .

[0040] Combination Figure 1 As shown, this specific implementation method uses a fixed column 9 to fix the original old wall 10 to prevent loosening and falling off. The following technical solutions are specifically adopted: it includes a screw sleeve 8 and a fixed column 9; four screw sleeves 8 are respectively arranged at the four corners inside the composite cement layer 1, the steel mesh 2, and the composite cement layer 3, one end of the fixed column 9 is installed inside the screw sleeve 8, and the repair brick is fixed by drilling a hole in the original old wall 10 and fixing the fixed column 9 in the hole. Combined with Figure 5 As shown, the screw sleeve body 8 is provided with an internal connection threaded hole 8-1, which can be connected to the fixing column 9. The outer wall of the screw sleeve body 8 is provided with an inwardly concave fixing groove 8-2, which can be stably connected to the composite cement layer 1 and the composite cement layer 2 when the composite cement layer 1 and the composite cement layer 2 are cast, and is not easy to fall off, thereby improving the connection strength. Figure 6 As shown, the fixed column 9 includes a connecting stud 9-1, a fixing column 9-2, and a fixing buckle body 9-3; the front end of the connecting stud 9-1 is integrally connected with the fixing column 9-2, the connecting stud 9-1 can be connected to the internal connecting threaded hole 8-1, and a plurality of fixing buckle bodies 9-3 are connected to the outer wall of the fixing column 9-2, the fixing buckle body 9-3 can be fixed in the hole body punched in the original old wall 10, and the fixing buckle body 9-3 is not easy to detach, and the fixing buckle body 9-3 can specifically be a metal column bar or rib bar, which plays a reverse limit role; the front end of the fixing column 9-2 is provided with a conical guide head 9-21, and the conical guide head 9-21 can realize guidance during installation.

[0041] The working principle of this specific implementation is:

[0042] During use, when part of the original old wall 10 falls off, a groove is made in the fallen part to the size of the repair brick, and then a fixing hole is made on the original old wall 10 according to the position of the fixing column, and then the grooved part is cleaned, a layer of glue is applied first, and when the glue is slightly dry, the fixing column 9 is installed in the screw sleeve body 8, glue is applied on the back of the repair brick, and sealant is injected into the fixing glue groove 5-1 of the pressure-resistant plate 5. At this time, the repair brick is installed in the grooved part, so that the fixing column 9 is installed in the fixing hole of the original old wall 10, and is fully pressed so that the glue can repair the adhesion between the brick and the original old wall 10. When the sealant overflows, it can be scraped flat. When the sealant is dry, a layer of waterproof glue is applied on the outside of the sealant to prevent the sealant from cracking due to long-term exposure to the sun.

[0043] When cracks appear in the wall, the middle part of the repair brick corresponding to the crack will be marked according to the direction of the crack, and then chiseled at the marked line. Then the repair brick will be installed according to the above installation method. The repair drill can pull the crack so that the crack no longer extends. When the crack gap is too large, it needs to be filled with foaming agent.

Claims

1. A multi-layer composite wall block for repairing old exterior walls, characterized by: The invention comprises a composite cement layer 1 (1), a steel mesh (2), a composite cement layer 2 (3), a thermal insulation structure (4), a pressure-resistant plate (5), a decorative coating (6), a waterproof layer (7), a screw sleeve body (8), and a fixed column body (9); the steel mesh (2) is arranged on the outer wall of the composite cement layer 1 (1), the composite cement layer 2 (3) is installed on the outer wall of the steel mesh (2), the thermal insulation structure (4) is arranged on the outer wall of the composite cement layer 2 (3), the pressure-resistant plate (5) is arranged on the outer wall of the thermal insulation structure (4), the decorative coating (6) is arranged on the outer wall of the pressure-resistant plate (5), and the waterproof layer (7) is arranged on the outer wall of the decorative coating (6); four screw sleeve bodies (8) are respectively arranged at four corners inside the composite cement layer 1 (1), the steel mesh (2), and the composite cement layer 2 (3); and one end of the fixed column body (9) is installed inside the screw sleeve body (8).

2. The multi-layer composite wall block for repairing old exterior walls according to claim 1 is characterized in that: The composite cement layer 1 (1) and the composite cement layer 2 (3) are plates cast from a mixture of cement and glue.

3. The multi-layer composite wall block for repairing old exterior walls according to claim 1 is characterized in that: The thermal insulation structure (4) is a net-column structure, comprising a thermal insulation board (4-1), an external connection net (4-2), an internal connection net (4-3), a plurality of first connection columns (4-4) and a plurality of second connection columns (4-5); the inner wall of the thermal insulation board (4-1) is bonded with the internal connection net (4-3), the outer wall of the thermal insulation board (4-1) is bonded with the external connection net (4-2), a plurality of first connection columns (4-4) are inserted between the external connection net (4-2) and the thermal insulation board (4-1), and a plurality of second connection columns (4-5) are inserted between the internal connection net (4-3) and the thermal insulation board (4-1).

4. The multi-layer composite wall block for repairing old exterior walls according to claim 3 is characterized in that: The structure of the first connecting column (4-4) is the same as that of the second connecting column (4-5); the first connecting column (4-4) is a hollow column; a plurality of through holes (4-41) are provided on the outer wall of the first connecting column (4-4); each through hole (4-41) is connected to the inner hole of the first connecting column (4-4).

5. The multi-layer composite wall block for repairing old exterior walls according to claim 1 is characterized in that: The four side walls of the pressure-resistant plate (5) are each provided with an inwardly concave fixing rubber groove (5-1).

6. The multi-layer composite wall block for repairing old exterior walls according to claim 1 is characterized in that: An internal connecting threaded hole (8-1) is provided inside the screw sleeve body (8), and an inner concave fixing groove (8-2) is provided on the outer side wall of the screw sleeve body (8).

7. The multi-layer composite wall block for repairing old exterior walls according to claim 1 is characterized in that: The fixing column (9) comprises a connecting stud (9-1), a fixing column (9-2), and a fixing undercut body (9-3); the front end of the connecting stud (9-1) is integrally connected to the fixing column (9-2), and the outer side wall of the fixing column (9-2) is connected to a plurality of fixing undercut bodies (9-3).

8. The multi-layer composite wall block for repairing old exterior walls according to claim 7, characterized in that: A conical guide head (9-21) is provided at the front end of the fixing column (9-2).

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