Hollow wall body structure formed by overturning and inversely inserting

Abstract

The utility model relates to the technical field of assembly type constructional engineering, in particular to a hollow wall structure formed through overturning and inverted inserting. Comprising an A-face leaf wallboard, a B-face leaf wallboard and a reinforcement cage arranged between the A-face leaf wallboard and the B-face leaf wallboard, and the reinforcement cage comprises an A-face leaf wallboard reinforcement mesh and a B-face leaf wallboard reinforcement mesh which are embedded in the A-face leaf wallboard and the B-face leaf wallboard respectively; a plurality of reinforcing mesh limiting supports and a plurality of reinforcing mesh tying pieces are arranged between the A-face leaf wallboard reinforcing mesh and the B-face leaf wallboard reinforcing mesh, and the two ends of each reinforcing mesh limiting support abut against the A-face leaf wallboard reinforcing mesh and the B-face leaf wallboard reinforcing mesh respectively. The two ends of the reinforcing mesh pulling and connecting piece are connected with the A-face leaf wall plate reinforcing mesh and the B-face leaf wall plate reinforcing mesh respectively. The hollow wall is simple in structure, accurate in alignment and low in manufacturing cost due to the fact that the limiting supports and the tying pieces are arranged in a point mode, and particularly the forming accuracy of the wall is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building engineering technology, and in particular to a hollow wall structure formed by flipping and inserting. Background Technology

[0002] Precast hollow walls are commonly used prefabricated reinforced concrete components. They are prefabricated in a factory and then poured on-site to form a load-bearing wall. A precast hollow wall consists of a precast A-side wall panel, a precast B-side wall panel, and a cavity. The A and B wall panels are connected by tie rods, and the reinforcing steel mesh for the wall is arranged in the concrete of the A and B wall panels respectively.

[0003] The existing precast hollow wall forming process is as follows: after the wall reinforcement mesh is tied and positioned, the B-side wall panel is poured to the designed thickness first. After curing, it is rotated 180°, and then the A-side wall panel is poured to the designed thickness. Because there are tie rods connecting and supporting the A and B wall panels, a cavity is formed in the middle, thus forming a precast double-sided composite shear wall. This process is commonly referred to as the inverted molding process. In the inverted molding process, the tie rods play a crucial role. Firstly, during the product forming process, the tie rods control the precision; secondly, during on-site pouring, they prevent the A and B side wall panels from bulging; and thirdly, the application of different tie rods affects the product cost.

[0004] Technical defects in existing tie-fit structures and construction techniques for double-sided composite shear wall forming:

[0005] Fully cast-in-place type: (commonly known as tie rod)

[0006] a) The tie bar only connects the steel mesh on the AB side. It only has the function of pulling, not supporting. That is, it does not have the function of limiting the overall position of the steel mesh.

[0007] b) Both the tie bars and the wall steel mesh are tied together, which is a loose connection. During the inverted molding process, the steel mesh on side A will float up due to the resistance of the concrete. That is, the actual position of the stressed steel mesh cannot meet the design requirements, which affects the stress safety of the wall.

[0008] c) The steel mesh failed to penetrate the concrete to the required depth, which significantly reduced the ability to prevent formwork bulging when pouring concrete into the cavity.

[0009] Steel truss type:

[0010] a) The linear, continuous arrangement of tie rods results in a significant waste of steel reinforcement and increases costs;

[0011] b) Unlike the hook reinforcement, the truss type only has the function of supporting and not the function of tensioning. That is, the upper and lower ends of the truss reinforcement are tied between the two wall reinforcement meshes. When the cavity concrete is poured, it can only be controlled by the tension of the upper and lower ends of the truss reinforcement penetrating into the concrete. In other words, since the truss reinforcement cannot hook the reinforcement mesh of the AB wall, the anti-bulging function of this structure is greatly reduced. Utility Model Content

[0012] To address the aforementioned problems, the purpose of this utility model is to provide a hollow wall structure formed by flipping and inserting, offering a simple, easy-to-implement, precise, and low-cost technical solution.

[0013] To achieve the above objectives, the present invention adopts the following technical solution:

[0014] This utility model provides a flip-and-insert hollow wall structure, including an A-side wall panel, a B-side wall panel, and a reinforcing cage disposed between the A-side wall panel and the B-side wall panel. The reinforcing cage includes A-side wall panel reinforcing mesh and B-side wall panel reinforcing mesh respectively embedded in the A-side wall panel and the B-side wall panel. Multiple reinforcing mesh limiting brackets and multiple reinforcing mesh connecting members are provided between the A-side wall panel reinforcing mesh and the B-side wall panel reinforcing mesh. The two ends of the reinforcing mesh limiting brackets are respectively abutted and fixed to the A-side wall panel reinforcing mesh and the B-side wall panel reinforcing mesh, and the two ends of the reinforcing mesh connecting members are respectively hooked and fixed to the A-side wall panel reinforcing mesh and the B-side wall panel reinforcing mesh.

[0015] The steel mesh limiting bracket and the steel mesh tie member are arranged alternately at intervals.

[0016] The steel mesh limiting bracket includes legs, diagonal braces, and a supporting beam. The two ends of the supporting beam are connected to the upper ends of the two diagonal braces, and the lower ends of the two diagonal braces are connected to the two legs. The two diagonal braces are arranged in a figure-eight shape. The supporting beam is embedded in the B-side leaf wall panel, and the two legs are embedded in the A-side leaf wall panel.

[0017] The two support legs are arranged parallel to the support beam.

[0018] The steel mesh tie member includes a tie member body and oblique hooks and straight hooks respectively disposed at both ends of the tie member body, wherein the oblique hooks hook the steel mesh of the B-side leaf wall panel, and the straight hooks hook the steel mesh of the A-side leaf wall panel.

[0019] The two ends of the steel mesh of the A-side leaf wall panel and the steel mesh of the B-side leaf wall panel are connected by a steel mesh end limiting bracket.

[0020] The end limiting bracket of the steel mesh is formed by bending the end steel bars of the steel mesh of the B-side leaf wall panel and binding them together with the end steel bars of the steel mesh of the A-side leaf wall panel.

[0021] Both the A-side leaf wall panel and the B-side leaf wall panel are made of concrete.

[0022] This utility model provides a hollow wall structure formed by flipping and inserting. The hollow wall structure is simple, requires no special equipment, and is easy to promote and apply. The limiting bracket and tie members are all point-type arrangements, resulting in low cost. The steel mesh limiting bracket can adjust the specifications and dimensions of the components, that is, for walls of different heights, it can be arbitrarily calculated and combined to form the optimal forming and anti-bulging scheme. The steel mesh limiting bracket has a "support and lift" function, which plays a limiting role in the hollow wall forming process to ensure the wall forming accuracy. The steel mesh tie members have a "tie" function, which ensures the overall stability of the double-layer steel mesh during the hollow wall forming process. Another important function is to tie the AB leaf wall panels during the secondary on-site concrete pouring to prevent bulging during pouring. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a hollow wall structure formed by flipping and inserting according to the present invention;

[0024] Figure 2 This is a schematic diagram of the steel mesh limiting bracket in this utility model;

[0025] Figure 3 This is a structural schematic diagram of the steel mesh tie member in this utility model;

[0026] Figure 4 This is a schematic diagram of the steel cage structure in this utility model;

[0027] Figure 5 This is a schematic diagram illustrating the preparation process of a hollow wall structure formed by flipping and inverting according to the present invention.

[0028] In the diagram: 1 is the A-side wall panel, 2 is the B-side wall panel, 3 is the A-side wall panel steel mesh, 4 is the B-side wall panel steel mesh, 5 is the steel mesh limiting bracket, 5-1 is the support leg, 5-2 is the diagonal brace, 5-3 is the supporting beam, 6 is the steel mesh tie member, 6-1 is the diagonal hook, 6-2 is the tie member body, 6-3 is the straight hook, and 7 is the steel mesh end limiting bracket. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] See Figures 1 to 5As shown, this utility model provides a flip-and-insert hollow wall structure, including an A-side wall panel 1, a B-side wall panel 2, and a reinforcing cage disposed between the A-side wall panel 1 and the B-side wall panel 2. The reinforcing cage includes A-side wall panel reinforcing mesh 3 and B-side wall panel reinforcing mesh 4 respectively embedded in the A-side wall panel 1 and the B-side wall panel 2. Multiple reinforcing mesh limiting brackets 5 and multiple reinforcing mesh connecting members 6 are provided between the A-side wall panel reinforcing mesh 3 and the B-side wall panel reinforcing mesh 4. The two ends of the reinforcing mesh limiting brackets 5 are respectively abutted and fixed to the A-side wall panel reinforcing mesh 3 and the B-side wall panel reinforcing mesh 4, and the two ends of the reinforcing mesh connecting members 6 are respectively hooked and fixed to the A-side wall panel reinforcing mesh 3 and the B-side wall panel reinforcing mesh 4.

[0031] See Figure 1 As shown, in this embodiment of the present invention, the reinforcing mesh limiting bracket 5 and the reinforcing mesh tie member 6 are arranged alternately at intervals. Furthermore, the two ends of the reinforcing mesh 3 of the A-side leaf wall panel and the reinforcing mesh 4 of the B-side leaf wall panel are connected by the reinforcing mesh end limiting bracket 7.

[0032] Specifically, the end limiting bracket 7 of the steel mesh is formed by bending the end steel bars of the steel mesh 4 of the B-side leaf wall panel and binding them together with the end steel bars of the steel mesh 3 of the A-side leaf wall panel.

[0033] See Figure 2 As shown in the embodiment of this utility model, the steel mesh limiting bracket 5 includes support legs 5-1, diagonal braces 5-2, and a supporting beam 5-3. The two ends of the supporting beam 5-3 are respectively connected to the upper ends of the two diagonal braces 5-2, and the lower ends of the two diagonal braces 5-2 are respectively connected to the two support legs 5-1. The two diagonal braces 5-2 are arranged in a V-shape. The supporting beam 5-3 is abutted and tied to the steel mesh 4 of the B-side leaf wall panel, and is pre-embedded in the B-side leaf wall panel 2 together with the steel mesh 4 of the B-side leaf wall panel. The two support legs 5-1 are abutted and tied to the steel mesh 3 of the A-side leaf wall panel, and are pre-embedded in the A-side leaf wall panel 1 together with the steel mesh 3 of the A-side leaf wall panel.

[0034] Specifically, the two support legs 5-1 are securely tied (or welded) to the steel mesh 3 of the A-side wall panel. The design height of the diagonal brace 5-2 controls the relative position of the upper and lower steel meshes to meet the design requirements; the supporting beam 5-3 is securely tied (or welded) to the steel mesh 4 of the B-side wall panel.

[0035] Furthermore, the two support legs 5-1 are arranged parallel to the supporting beam 5-3 to improve the limiting accuracy. In this embodiment, the steel mesh limiting bracket 5 is made of steel bars and integrally formed. Its main function is to limit the relative position of the steel mesh 3 of the A-side leaf wall plate and the steel mesh 4 of the B-side leaf wall plate accurately. Especially during the secondary flipping and forming, it supports the steel mesh 4 of the B-side leaf wall, ensuring that the mesh can accurately penetrate into the concrete of the B-side leaf wall.

[0036] See Figure 3 and Figure 4 As shown in the embodiment of this utility model, the steel mesh tie member 6 includes a tie member body 6-2 and oblique hooks 6-1 and straight hooks 6-3 respectively disposed at both ends of the tie member body 6-2, wherein the oblique hooks 6-1 hook the steel mesh 4 of the B-side leaf wall panel, and the straight hooks 6-3 hook the steel mesh 3 of the A-side leaf wall panel.

[0037] In this embodiment, the steel mesh tie member 6 is made of steel bars and integrally formed. Its main function is to tie the A-side leaf wall panel 1 and the B-side leaf wall panel 2 during the secondary pouring of concrete on site after the precast hollow wall is formed, so as to prevent the formwork from expanding during pouring.

[0038] In the embodiments of this utility model, both the A-side leaf wall panel 1 and the B-side leaf wall panel 2 are made of concrete. The A-side leaf wall panel steel mesh 3 and the B-side leaf wall panel steel mesh 4 are both composed of intersecting steel bars, which can be tied or welded into shape.

[0039] See Figure 1 As shown in the embodiment of this utility model, the hollow wall is designed to have a thickness of B, the A-side leaf wall panel 1 is designed to have a thickness of D1, the B-side leaf wall panel 2 is designed to have a thickness of D2, and the prefabricated hollow wall cavity thickness is H.

[0040] This utility model provides a hollow wall structure formed by flipping and inverting, and its specific implementation process is as follows:

[0041] 1. Design: Conventional process, including determining the thickness of the composite slab, the arrangement of the limiting brackets 5 and tie pieces 6, wall reinforcement, embedded parts, etc.

[0042] 2. Preparation of steel mesh limiting bracket 5 and steel mesh tie member 6: cut and form according to design specifications and dimensions.

[0043] 3. Prepare the reinforcing mesh for the A and B side wall panels and assemble it into a reinforcing cage. This example only illustrates the separate binding of the reinforcing mesh for the A and B side wall panels. In actual operation, the ends of the reinforcing mesh for the A and B side walls can also be welded laterally to form a reinforcing cage (double-layer, two-way reinforcing mesh). See [link / reference]. Figure 4 As shown;

[0044] a) Prepare steel mesh 3 for A-side leaf wall panel and steel mesh 4 for B-side leaf wall panel respectively;

[0045] b) Place the steel mesh limiting bracket 5, the steel mesh end limiting bracket 7, and the steel mesh tie piece 6 in the specified positions;

[0046] c) The end limiting bracket 7 of the steel mesh can be replaced by bending the upper steel mesh and binding it with the lower steel mesh;

[0047] d) Install reinforcement protective layer spacers;

[0048] e) Forming of hollow wall reinforcement cages, see Figure 4 As shown.

[0049] 4. Preparation of A-side leaf wall panel 1:

[0050] a) Support the side molds on the mold platform;

[0051] b) Lay the protective layer spacers for the steel mesh reinforcement of the wall panel on side A;

[0052] c) Laying the steel reinforcement cage;

[0053] d) Install embedded parts (such as conduits, junction boxes, etc.);

[0054] e) Concrete pouring for side wall panel A, see Figure 5 As shown;

[0055] f) Surface roughening: generally done by hand roughening;

[0056] g) Curing and shaping.

[0057] 5. Preparation of B-side leaf wall panel 2:

[0058] a) Support the side molds on the mold platform;

[0059] b) Install embedded parts (such as conduits, junction boxes, etc.);

[0060] c) Pour concrete into the side formwork;

[0061] d) The prefabricated A-side wall panel, along with the tied steel reinforcement cage, is rotated 180° and inserted upside down into the side formwork as a whole. See [reference needed]. Figure 1 As shown;

[0062] e) Surface roughening: generally done by hand roughening;

[0063] f) Curing and shaping.

[0064] 6. Demold all at once.

[0065] 7. Product completed.

[0066] Specifically, the steel mesh of the A and B side wall panels can also be tied separately, and limiting brackets and tie pieces can be installed at the specified positions. Then, the panels can be cast into shape according to the above forming procedure.

[0067] This utility model provides a hollow wall structure formed by flipping and inserting. The hollow wall structure is simple, requires no special equipment, and is easy to promote and apply. The limiting bracket and tie members are all point-type arrangements, resulting in low cost. The steel mesh limiting bracket can adjust the specifications and dimensions of the components, that is, for walls of different heights, it can be arbitrarily calculated and combined to form the optimal forming and anti-bulging scheme. The steel mesh limiting bracket has a "support and lift" function, which plays a limiting role in the hollow wall forming process to ensure the wall forming accuracy. The steel mesh tie members have a "tie" function, which ensures the overall stability of the double-layer steel mesh during the hollow wall forming process. Another important function is to tie the AB leaf wall panels during the secondary on-site concrete pouring to prevent bulging during pouring.

[0068] The above description is merely an embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, extensions, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A hollow wall structure formed by flipping and inverting, characterized in that, The device includes an A-side leaf wall panel (1), a B-side leaf wall panel (2), and a reinforcing cage disposed between the A-side leaf wall panel (1) and the B-side leaf wall panel (2). The reinforcing cage includes A-side leaf wall panel reinforcing mesh (3) and B-side leaf wall panel reinforcing mesh (4) respectively embedded in the A-side leaf wall panel (1) and the B-side leaf wall panel (2). Multiple reinforcing mesh limiting brackets (5) and multiple reinforcing mesh tie members (6) are provided between the A-side leaf wall panel reinforcing mesh (3) and the B-side leaf wall panel reinforcing mesh (4). The two ends of the reinforcing mesh limiting brackets (5) are respectively abutted and fixed to the A-side leaf wall panel reinforcing mesh (3) and the B-side leaf wall panel reinforcing mesh (4). The two ends of the reinforcing mesh tie members (6) are respectively hooked and fixed to the A-side leaf wall panel reinforcing mesh (3) and the B-side leaf wall panel reinforcing mesh (4).

2. The inverted and plugged hollow wall structure according to claim 1, characterized in that, The steel mesh limiting bracket (5) and the steel mesh tie member (6) are arranged alternately at intervals.

3. The inverted and inverted hollow wall structure according to claim 1, characterized in that, The steel mesh limiting bracket (5) includes legs (5-1), diagonal braces (5-2) and a supporting beam (5-3). The two ends of the supporting beam (5-3) are connected to the upper ends of the two diagonal braces (5-2) respectively, and the lower ends of the two diagonal braces (5-2) are connected to the two legs (5-1) respectively. The two diagonal braces (5-2) are arranged in a figure-eight shape. The supporting beam (5-3) is embedded in the B-side leaf wall panel (2), and the two legs (5-1) are embedded in the A-side leaf wall panel (1).

4. The inverted and plugged hollow wall structure according to claim 3, characterized in that, The two support legs (5-1) are arranged parallel to the support beam (5-3).

5. The inverted and inverted hollow wall structure according to claim 1, characterized in that, The steel mesh tie member (6) includes a tie member body (6-2) and oblique hooks (6-1) and straight hooks (6-3) respectively disposed at both ends of the tie member body (6-2), wherein the oblique hooks (6-1) hook the steel mesh (4) of the B-side leaf wall panel, and the straight hooks (6-3) hook the steel mesh (3) of the A-side leaf wall panel.

6. The inverted and inverted hollow wall structure according to claim 1, characterized in that, The two ends of the steel mesh (3) of the A-side leaf wall panel and the steel mesh (4) of the B-side leaf wall panel are connected by a steel mesh end limiting bracket (7).

7. The inverted and inverted hollow wall structure according to claim 6, characterized in that, The end limiting bracket (7) of the steel mesh is formed by bending the end steel bars of the steel mesh (4) of the B-side leaf wall panel and binding them together with the end steel bars of the steel mesh (3) of the A-side leaf wall panel.

8. The inverted and plugged hollow wall structure according to claim 1, characterized in that, Both the A-side leaf wall panel (1) and the B-side leaf wall panel (2) are made of concrete.

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