A composite connector for forming prefabricated double-skin walls and a prefabricated double-skin wall.

Abstract

This utility model belongs to the field of prefabricated building engineering technology, specifically a combined connector for forming prefabricated double-skin walls and a prefabricated double-skin wall. The tie rod body is fixedly connected to the support rod body. Upper and lower hooks are fixedly connected to both sides of the tie rod body, and upper and lower hooks are fixedly connected to both sides of the support rod body. The upper hook of the tie rod hooks onto the outer side of the B-side wall panel's reinforcing steel mesh within the B-side wall panel, and the upper hook of the support rod abuts against and is fixed to the inner side of the B-side wall panel's reinforcing steel mesh. The lower hook of the tie rod hooks onto the outer side of the A-side wall panel's reinforcing steel mesh within the A-side wall panel, and the lower hook of the support rod abuts against and is fixed to the inner side of the A-side wall panel's reinforcing steel mesh. This utility model's combined connector fully utilizes the "support" function, ensuring manufacturing accuracy; in the application of double-skin walls, it fully utilizes the "pull" function, ensuring that the formwork does not expand during pouring.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building engineering technology, specifically a combination connector for forming prefabricated double-skin walls and a prefabricated double-skin wall. Background Technology

[0002] Double-skin walls are commonly used precast reinforced concrete components, consisting of two symmetrical leaf wall panels (A and B) and a cavity in between. The leaf wall panels contain a reinforcing steel mesh for the wall's load-bearing structure. The molding process for double-skin walls involves inverted insertion: first, one leaf wall panel (A side) is fabricated, then the reinforcing steel system of the other leaf wall panel (B side) is inverted and inserted into the concrete of the B side leaf wall panel, followed by curing.

[0003] The reinforcement of the leaf walls in the double-layer wall system is the same; the difference lies in the connection method of the steel mesh connecting the A and B leaf walls, i.e., the connectors are different.

[0004] The existing structural forms of hollow walls include the following two:

[0005] (1) National standard double-layer wall: The steel mesh connector of the AB leaf wall is a truss bar, which is tied to the AB two steel meshes respectively.

[0006] (2) Welded steel mesh double-layer wall: The steel mesh of the AB leaf wall is an integrally formed welded steel mesh, that is, the steel bars are welded between the two stressed steel meshes of AB to form an integral steel cage.

[0007] The two existing hollow wall structures mentioned above have the following technical defects:

[0008] (1) National standard double-layer wall

[0009] a) The two ends are only tied to the AB steel mesh, without forming a hook effect, making it very easy for the formwork to bulge during pouring; that is, the truss reinforcement plays a compressive role in the construction of the double-layer wall, but cannot play a tensile role when in use.

[0010] Truss reinforcement requires a regular arrangement, consumes a large amount of steel, and is costly.

[0011] (2) Welded steel mesh double-layer wall

[0012] a) The weld strength of the connecting rod is low, and it is easy to break during manufacturing and casting, which will affect the overall quality of the product.

[0013] b) Finished steel cages that meet the process requirements require large and complex steel processing equipment, which is costly and inefficient. Utility Model Content

[0014] In order to overcome the above-mentioned defects of existing hollow wall connection methods, the purpose of this utility model is to provide a combined connector for prefabricated double-skin wall forming and a prefabricated double-skin wall.

[0015] The objective of this utility model is achieved through the following technical solution:

[0016] This utility model's combined connector is a combined bracing component located between the A-side wall panel and the B-side wall panel of a double-layer wall system. It includes a tie rod body, an upper tie rod hook, a lower tie rod hook, an upper support hook, a support rod body, and a lower support hook. The tie rod body is fixedly connected to the support rod body. The upper and lower tie rod hooks are fixedly connected to both sides of the tie rod body, and the upper and lower support hooks are fixedly connected to both sides of the support rod body. The upper tie rod hook hooks onto the outer side of the B-side wall panel's reinforcing steel mesh within the B-side wall panel. The reinforcing mesh is constructed such that the upper hook of the support rod abuts against and is fixed to the inner side of the reinforcing mesh of the B-side wall panel, and the upper hook of the tie rod and the upper hook of the support rod are cast together with the reinforcing mesh of the B-side wall panel into the concrete of the B-side leaf wall panel; the lower hook of the tie rod hooks onto the outer side of the reinforcing mesh of the A-side wall panel inside the A-side leaf wall panel, and the lower hook of the support rod abuts against and is fixed to the inner side of the reinforcing mesh of the A-side wall panel, and the lower hook of the tie rod and the lower hook of the support rod are cast together with the reinforcing mesh of the A-side wall panel into the concrete of the A-side leaf wall panel.

[0017] The system also includes a diagonal brace, the two ends of which are fixedly connected to the support rod body and the lower hook of the support rod, respectively; or, one end of the diagonal brace is fixedly connected to the lower hook of the support rod, and the other end of the diagonal brace is fixedly connected to the connection between the support rod body and the upper hook of the support rod.

[0018] The upper hook and lower hook of the pull rod are located on the same side of the pull rod body and are perpendicular to the pull rod body respectively.

[0019] The A-side blade wall panel is prepared before the B-side blade wall panel, and the length of the lower hook of the tie rod is greater than the length of the upper hook of the tie rod.

[0020] The upper hook and lower hook of the strut are located on the same side of the strut body and are perpendicular to the strut body.

[0021] The length of the lower hook of the support rod is greater than the length of the upper hook of the support rod.

[0022] The upper hook and lower hook of the pull rod are located on one side of the pull rod body and the support rod body, and the upper hook and lower hook of the support rod are located on the other side of the pull rod body and the support rod body.

[0023] The prefabricated double-skin wall of this utility model includes symmetrical A-side leaf wall panels and B-side leaf wall panels. The A-side leaf wall panel is provided with a reinforcing steel mesh, and the B-side leaf wall panel is provided with a reinforcing steel mesh. It also includes a connecting component, and the A-side leaf wall panel and the B-side leaf wall panel are connected by the connecting component.

[0024] Wherein: there are multiple combined connectors, which are evenly arranged along the length direction of the A-side leaf wall panel and the B-side leaf wall panel, and each of the combined connectors, together with the reinforcing steel mesh of the A-side wall panel and the reinforcing steel mesh of the B-side wall panel, forms an upper and lower two-layer reinforcing cage.

[0025] The advantages and positive effects of this utility model are as follows:

[0026] 1. Reasonable structure: The combined connector of this utility model fully utilizes the "support" function to ensure manufacturing accuracy; when applied to double-skin walls, it fully utilizes the "pull" function to ensure that the mold does not expand during pouring.

[0027] 2. The combined connector of this utility model can be made using simple steel bar processing and welding equipment, and is easy to manufacture.

[0028] 3. The combined connector of this utility model adopts a point-type arrangement, uses locally sourced materials, has low cost, requires no special equipment, and is easy to promote and apply.

[0029] 4. The combined connector of this utility model can also be provided with diagonal bracing to enhance the lateral stiffness of the combined bracing and prevent misalignment and deformation of the A-side leaf wall panel and the B-side leaf wall panel during transportation and hoisting. Attached Figure Description

[0030] Figure 1 This is a structural schematic diagram of the combined connector according to Embodiment 1 of this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of a double-skin wall according to Embodiment 1 of this utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the combined connector in Embodiment 2 of this utility model;

[0033] Figure 4 This is a schematic diagram of the double-skin wall structure in Embodiment 2 of this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the combined connector in Embodiment 3 of this utility model;

[0035] Figure 6 This is a structural schematic diagram of the double-skin wall in Embodiment 3 of this subsidy;

[0036] Wherein: 1 is the A-side leaf wall panel, 2 is the B-side leaf wall panel, 3 is the reinforcing steel mesh of the A-side wall panel, 4 is the reinforcing steel mesh of the B-side wall panel, 5 is the combined tie member, 51 is the tie rod body, 52 is the upper hook of the tie rod, 53 is the lower hook of the tie rod, 54 is the upper hook of the arm rod, 55 is the support rod body, 56 is the lower hook of the support rod, and 57 is the diagonal brace. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings.

[0038] Example 1

[0039] like Figure 1 As shown, the component connector in this embodiment is a combined bracing component 5 located between the A-side wall panel 1 and the B-side wall panel 2 of the double-skin wall. It includes a tie rod body 51, an upper tie rod hook 52, a lower tie rod hook 53, an upper support hook 54, a support rod body 55, and a lower support hook 56. The tie rod body 51 is fixedly connected to the support rod body 55. The upper tie rod hook 52 and the lower tie rod hook 53 are fixedly connected to both sides of the tie rod body 51, and the upper support hook 54 and the lower support hook 56 are fixedly connected to both sides of the support rod body 55. The upper tie rod hook 52 is located outside the B-side wall panel's reinforcing steel mesh 4 within the B-side wall panel 2. The side hook 52 hooks onto the reinforcing steel mesh 4 of the B-side wall panel, and the upper hook 54 of the strut abuts against and is fixed to the inner side of the reinforcing steel mesh 4 of the B-side wall panel. The upper hook 52 of the tie rod and the upper hook 54 of the strut are cast together with the reinforcing steel mesh 4 of the B-side wall panel into the concrete of the B-side leaf wall panel 2. The lower hook 53 of the tie rod hooks onto the outer side of the reinforcing steel mesh 3 of the A-side wall panel 1, and the lower hook 56 of the strut abuts against and is fixed to the inner side of the reinforcing steel mesh 3 of the A-side wall panel. The lower hook 53 of the tie rod and the lower hook 56 of the strut are cast together with the reinforcing steel mesh 3 of the A-side wall panel into the concrete of the A-side leaf wall panel 1.

[0040] In this embodiment, the combined bracing member 5 is assembled by welding steel bars. The upper hook 52 and the lower hook 53 of the tie rod are located on the same side of the tie rod body 51 and are perpendicular to the tie rod body 51 respectively. The upper hook 54 and the lower hook 56 of the support rod are located on the same side of the support rod body 55 and are perpendicular to the support rod body 55 respectively. The upper hook 52 and the lower hook 53 of the tie rod are located on one side of the tie rod body 51 and the support rod body 55, and the upper hook 54 and the lower hook 56 of the support rod are located on the other side of the tie rod body 51 and the support rod body 55.

[0041] Since the A-side leaf wall panel 1 is prepared before the B-side leaf wall panel 2, the length of the lower hook 53 of the tie rod in this embodiment is greater than the length of the upper hook 52 of the tie rod; the length of the lower hook 56 of the support rod in this embodiment is greater than the length of the upper hook 54 of the support rod.

[0042] like Figure 2As shown, the precast double-skin wall in this embodiment includes symmetrical A-side leaf wall panel 1 and B-side leaf wall panel 2. A-side leaf wall panel 1 contains an A-side wall panel reinforcing mesh 3, and B-side leaf wall panel 2 contains a B-side wall panel reinforcing mesh 4. The precast double-skin wall in this embodiment also includes the aforementioned connecting components, connecting A-side leaf wall panel 1 and B-side leaf wall panel 2. Multiple connecting components are evenly arranged along the length of A-side leaf wall panel 1 and B-side leaf wall panel 2, and each connecting component, together with the A-side wall panel reinforcing mesh 3 and the B-side wall panel reinforcing mesh 4, forms upper and lower layers of reinforcing cages. In the figure, D1 is the design thickness of A-side leaf wall panel 1, H is the thickness of the cast-in-place cavity of the double-skin wall, D2 is the design thickness of B-side leaf wall panel 2, and B is the total thickness of the precast double-skin wall.

[0043] In this embodiment:

[0044] A-side wall panel 1: Concrete casting, with internal reinforcement mesh 3 for A-side wall panel stress. The manufacturing process is existing technology and will not be described in detail here.

[0045] B-side leaf wall panel 2: Concrete casting, with internal reinforcement mesh 4 for B-side wall panel stress. The manufacturing process is existing technology and will not be described in detail here.

[0046] A-side wall panel reinforcing mesh 3: It is a single-layer bidirectional reinforcing mesh, and the specifications and layout are determined according to actual needs.

[0047] B-side wall panel reinforcing mesh 4: Same as A-side wall panel reinforcing mesh 3, it is a single-layer bidirectional reinforcing mesh, and the specifications and layout are determined according to actual needs.

[0048] The combined bracing member 5 is connected to the reinforcing steel mesh 3 of the A-side wall panel and the reinforcing steel mesh 4 of the B-side wall panel on both sides, and plays the roles of "pull", "compress" and "support" at the same time. It can ensure the forming accuracy when making double-layer wall and prevent the formwork from expanding during construction and pouring. The specifications and layout are determined according to actual needs.

[0049] Tie rod body 51: Specifications and layout will be determined according to actual needs.

[0050] Hook 52 on the tie rod: hooks the outer steel bar of the reinforcing steel mesh 4 of the B-side wall panel and is cast together into the concrete of the B-side leaf wall panel 2.

[0051] Tie rod lower hook 53: hooks the outer steel bar of the A-side wall panel reinforcing mesh 3, and is cast together into the concrete of the A-side leaf wall panel 1.

[0052] The upper hook 54 of the strut is used to tighten the inner steel bars of the reinforcing steel mesh 4 of the B-side wall panel and tie them firmly to the reinforcing steel mesh 4 of the B-side wall panel, and then pour them together into the concrete of the B-side leaf wall panel 2.

[0053] Support rod body 55: securely welded to tie rod body 51.

[0054] The lower hook 56 of the strut is used to tighten the inner steel bars of the reinforcing steel mesh 3 of the A-side wall panel and tie them together with the inner steel bars of the reinforcing steel mesh 3 of the A-side wall panel, and then pour them into the concrete of the A-side leaf wall panel 1.

[0055] The preparation process of the prefabricated double-skin wall in this implementation is as follows:

[0056] Step A, Design: Using existing technology, including determining the thickness of the A-side wall panel, the B-side wall panel, wall reinforcement, embedded parts, and the specifications and layout of the combined bracing components;

[0057] Step B, preparation of the combined bracing component 5: cut and weld the components according to the design specifications and dimensions;

[0058] Step C, prepare the double-layer wall reinforcement cage: namely, the A-side wall panel reinforcing mesh 3 and the B-side wall panel reinforcing mesh 4 are combined by the combined bracing member 5 to form two layers of reinforcement cages;

[0059] Step D, Preparation of A-side leaf wall panel 1: Using existing technology

[0060] a) Support the side molds on the mold platform;

[0061] b) Place the steel reinforcement protective layer spacers;

[0062] c) The double-layer wall reinforcement cage is put into the formwork. At this time, the reinforcing mesh 3 of the wall panel A is at the bottom and the reinforcing mesh 4 of the wall panel B is at the top.

[0063] d) Install embedded parts (such as conduits, junction boxes, etc.);

[0064] e) Concrete pouring;

[0065] f) Roughening the surface, commonly done by hand roughening;

[0066] g) Curing and shaping;

[0067] Step E: Merge to form a double-skin wall

[0068] a) Place two side molds on the B-side leaf wall panel on the mold platform;

[0069] b) Install embedded parts (such as conduits, junction boxes, etc.), protective layer spacers, etc.

[0070] c) Pouring concrete inside the side formwork;

[0071] d) The prefabricated A-side leaf wall panel 1, together with the steel cage and combined bracing component 5, is rotated 180° as a whole and inserted upside down into the side formwork; the existing flipping and inverting process is adopted, which will not be described in detail here;

[0072] e) Rough surface treatment, commonly done by hand roughening;

[0073] f) Curing and shaping;

[0074] Step F: Demold all at once;

[0075] Step G: Product complete.

[0076] Example 2

[0077] like Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that this embodiment also includes a diagonal brace 57. The two ends of the diagonal brace 57 are respectively fixed to the support rod body 55 and the lower hook 56 of the support rod, and are cast into the concrete of the A-side leaf wall panel 1 and the B-side leaf wall panel 2. This enhances the lateral stiffness of the combined bracing member 5 and prevents misalignment and deformation of the A-side leaf wall panel 1 and the B-side leaf wall panel 2 during transportation and hoisting. For small components or those using support rods and tie rods with sufficient strength calculated from calculations, this diagonal brace 57 can be omitted. Everything else is the same as the combined connecting member in Embodiment 1.

[0078] like Figure 4 As shown, this is a prefabricated double-skin wall prepared using the combined connectors of this embodiment.

[0079] Example 3

[0080] like Figure 5 As shown, the difference between this embodiment and Embodiment 2 is that in this embodiment, one end of the diagonal brace 57 is fixedly connected to the lower hook 56 of the support rod, and the other end of the diagonal brace 57 is fixedly connected to the connection between the support rod body 55 and the upper hook 54 of the support rod. All other components are the same as the combined connecting parts in Embodiment 2.

[0081] like Figure 6 As shown, this is a prefabricated double-skin wall prepared using the combined connectors of this embodiment.

Claims

1. A composite tie for forming a precast double-skin wall, characterized by: The combined connector is a combined bracing member (5) located between the A-side wall panel (1) and the B-side wall panel (2) of the double-skin wall. It includes a tie rod body (51), an upper tie rod hook (52), a lower tie rod hook (53), an upper support hook (54), a support rod body (55), and a lower support hook (56). The tie rod body (51) is fixedly connected to the support rod body (55). The upper tie rod hook (52) and the lower tie rod hook (53) are fixedly connected to both sides of the tie rod body (51). The upper support hook (54) and the lower support hook (56) are fixedly connected to both sides of the support rod body (55). The upper tie rod hook (52) hooks to the outside of the B-side wall panel reinforcing steel mesh (4) inside the B-side wall panel (2). The reinforcing mesh (4) of the B-side wall panel is attached, and the upper hook (54) of the support rod abuts against and is fixed to the inner side of the reinforcing mesh (4) of the B-side wall panel. The upper hook (52) of the tie rod, the upper hook (54) of the support rod and the reinforcing mesh (4) of the B-side wall panel are cast together in the concrete of the B-side leaf wall panel (2). The lower hook (53) of the tie rod hooks the reinforcing mesh (3) of the A-side wall panel (3) on the outer side of the A-side leaf wall panel (1). The lower hook (56) of the support rod abuts against and is fixed to the inner side of the reinforcing mesh (3) of the A-side wall panel. The lower hook (53) of the tie rod, the lower hook (56) of the support rod and the reinforcing mesh (3) of the A-side wall panel are cast together in the concrete of the A-side leaf wall panel (1).

2. The composite connector for forming a precast double-skin wall according to claim 1, wherein: It also includes a diagonal brace (57), the two ends of which are fixedly connected to the support rod body (55) and the lower hook (56) of the support rod respectively; or, one end of the diagonal brace (57) is fixedly connected to the lower hook (56) of the support rod, and the other end of the diagonal brace (57) is fixedly connected to the connection between the support rod body (55) and the upper hook (54) of the support rod.

3. The composite connector for forming a precast double-skin wall according to claim 1, wherein: The upper hook (52) and lower hook (53) of the pull rod are located on the same side of the pull rod body (51) and are perpendicular to the pull rod body (51) respectively.

4. The composite connector for forming a precast double-skin wall according to claim 1, wherein: The A-side leaf wall panel (1) is prepared before the B-side leaf wall panel (2), and the length of the lower hook (53) of the tie rod is greater than the length of the upper hook (52) of the tie rod.

5. The composite connector for forming a precast double-skin wall according to claim 1, wherein: The upper hook (54) and lower hook (56) of the strut are located on the same side of the strut body (55) and are perpendicular to the strut body (55) respectively.

6. The composite connector for forming a precast double-skin wall according to claim 1, wherein: The length of the lower hook (56) of the strut is greater than the length of the upper hook (54) of the strut.

7. The composite connector for forming a precast double-skin wall according to claim 1, wherein: The upper hook (52) and lower hook (53) of the pull rod are located on one side of the pull rod body (51) and the support rod body (55), and the upper hook (54) and lower hook (56) of the support rod are located on the other side of the pull rod body (51) and the support rod body (55).

8. A prefabricated double-skin wall, comprising symmetrical A-side leaf wallboards (1) and B-side leaf wallboards (2), the A-side leaf wallboards (1) being provided with A-side wallboard stress steel bar meshes (3) and the B-side leaf wallboards (2) being provided with B-side wallboard stress steel bar meshes (4); characterized in that: It also includes the combined connector as described in any one of claims 1 to 6, wherein the A-side leaf wall panel (1) and the B-side leaf wall panel (2) are connected by the combined connector.

9. The precast double-skin wall according to claim 8, characterized in that: The combined connectors are multiple and are evenly arranged along the length direction of the A-side leaf wall panel (1) and the B-side leaf wall panel (2). Each of the combined connectors is combined with the A-side wall panel reinforcing steel mesh (3) and the B-side wall panel reinforcing steel mesh (4) to form upper and lower two-layer reinforcing steel cages.

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