Cold joint waterproofing construction for building facade

Abstract

This utility model provides a construction structure for preventing leakage of cold joints in the exterior facade of a building, comprising: a protrusion (101) formed at the bottom of the exterior wall or column structure (1) of the building structure, and a recess (201) formed at the top of the floor slab (2) located at the bottom of the exterior wall or column structure (1), the protrusion (101) being matched and disposed within the recess (201), and a non-horizontal construction cold joint (4) being formed between the exterior wall or column structure (1) and the floor slab (2). This utility model relates to the field of building construction technology and can solve the problem of high leakage risk of horizontal construction cold joints in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a cold joint anti-leakage structure for the exterior facade of a building. Background Technology

[0002] In current building construction techniques, there is a horizontal cold joint 5 between the exterior wall or column structure 1 and the floor slab 2 of the building structure, as shown in the attached figure. Figure 1 As shown, the horizontal construction cold joint 5 is generally not specially waterproofed, relying on the self-waterproofing properties of the concrete's density. Because the horizontal construction cold joint 5 is itself a weak point in waterproofing, if water enters the exterior facade's decorative layer or insulation layer, it can cause leaks or mold growth on the exterior walls, affecting the building's functionality. Therefore, there is a need to provide a leak-proof structure for the construction cold joints on the building's exterior facade, which can solve the problem of high leakage risk in existing horizontal construction cold joint technologies. Summary of the Invention

[0003] The purpose of this utility model is to provide a construction method for preventing leakage of cold joints in the exterior facade of a building structure, which can solve the problem of high leakage risk in horizontal construction cold joints in the prior art.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A construction cold joint anti-leakage structure for the exterior facade of a building includes: a protrusion formed at the bottom of the exterior wall or column structure of the building structure, and a recess formed at the top of the floor slab located at the bottom of the exterior wall or column structure, the protrusion being matched and disposed within the recess, and a non-horizontal construction cold joint being formed between the exterior wall or column structure and the floor slab.

[0006] The protrusion is located on the bottom outer side of the exterior wall or column structure and is flush with the exterior facade of the exterior wall or column structure; the recess is located on the top outer side of the floor slab and is flush with the exterior facade of the floor slab, so that the non-horizontal construction cold joint has a Z-shaped structure.

[0007] The thickness of the protrusion is the same as the depth of the concave portion, and the depth of the concave portion is less than the thickness of the floor slab.

[0008] The aforementioned cold joint anti-leakage structure for the exterior facade construction of the building structure also includes floor slab formwork, on which tongue and groove are formed, so that the floor slab forms a planar plate structure with concave parts after being poured through the floor slab formwork.

[0009] Compared with the prior art, this utility model has the following advantages:

[0010] 1. This utility model features an exterior wall or column structure with a protrusion on the outer bottom and a floor slab with a concave top. After concrete pouring, a non-horizontal construction cold joint with a Z-shaped structure is formed between the exterior wall or column structure and the floor slab. Compared with the traditional horizontal construction cold joint, this changes and extends the leakage path. The non-horizontal construction cold joint with the inner side higher than the outer side increases the difficulty of water seepage and forms a self-waterproof structure, thereby greatly reducing the hidden danger of leakage at the construction cold joint of the building structure exterior wall.

[0011] 2. This utility model has a floor slab template with tongue and groove, which can form a floor slab with a concave part through the floor slab template, which facilitates the pouring construction of the floor slab. When pouring the external wall or column structure, the concrete automatically fills the concave part and vibrates to compact it, thereby forming a convex part at the bottom of the external wall or column structure. It is simple and easy to operate, and does not increase the amount of construction, labor, materials and costs, and has certain economic and practical advantages. Attached Figure Description

[0012] The above and other objects, features and advantages of this disclosure will become more apparent from the accompanying drawings, in which like reference numerals generally denote like parts.

[0013] Figure 1 It is a sectional elevation view of the cold joint in the exterior construction of existing building structures;

[0014] Figure 2 This is a sectional view of the cold joint anti-leakage structure for the exterior facade of the building structure of this utility model.

[0015] Figure 3 This is a sectional view of the floor slab formwork in the cold joint anti-leakage structure for the exterior facade construction of this utility model.

[0016] In the diagram, 1 is the exterior wall or column structure, 101 is the protrusion, 2 is the floor slab, 201 is the recess, 3 is the floor slab formwork, 301 is the tongue and groove joint, 4 is the non-horizontal construction cold joint, and 5 is the horizontal construction cold joint. Detailed Implementation

[0017] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the cold joint anti-leakage structure for building facade construction proposed by this utility model. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0018] Please see the appendix Figure 2A construction cold joint anti-leakage structure for the exterior facade of a building includes a protrusion 101 formed at the bottom of the exterior wall or column structure 1 of the building structure, and a recess 201 formed at the top of the floor slab 2 located at the bottom of the exterior wall or column structure 1. The protrusion 101 is matched and disposed in the recess 201, and a non-horizontal construction cold joint 4 is formed between the exterior wall or column structure 1 and the floor slab 2.

[0019] By interlocking the protrusion 101 at the bottom of the exterior wall or column structure 1 with the recess 201 at the top of the floor slab 2, a non-horizontal construction cold joint 4 is formed between the exterior wall or column structure 1 and the floor slab 2 through the matching shape, structure, and size. Compared with the traditional horizontal construction cold joint 5, the non-horizontal construction cold joint 4 is longer and has a height difference along its path, which can extend the leakage path and form a self-waterproof structure, thereby effectively reducing the leakage risk at the construction cold joint of the building structure's exterior wall.

[0020] The protrusions 101 and the recesses 201 are arranged in pairs, and their number, structural shape and size are consistent. The specific structure and number can be adjusted according to actual needs. Preferably, it is a pair of protrusions 101 and recesses 201 with a rectangular cross section.

[0021] Please see the appendix Figure 2 The protrusion 101 is located on the bottom outer side of the exterior wall or column structure 1 and is flush with the exterior facade of the exterior wall or column structure 1; the recess 201 is located on the top outer side of the floor slab 2 and is flush with the exterior facade of the floor slab 2, so that the non-horizontal construction cold joint 4 has a Z-shaped structure.

[0022] Compared to the traditional horizontal construction cold joint 5, the non-horizontal construction cold joint 4 with a Z-shaped structure increases the height difference between the connection between the protrusion 101 and the concave part 201, thereby extending the length of the leakage path. In addition, the structure with the inner high and the outer low increases the difficulty of water seepage, greatly reducing the leakage risk at the non-horizontal construction cold joint 4.

[0023] Please see the appendix Figure 2 The thickness of the protrusion 101 is the same as the depth of the recess 201, and the depth of the recess 201 is less than the thickness of the floor slab 2.

[0024] The thickness of the protrusion 101 is the same as the depth of the recess 201 to ensure that the exterior wall or column structure 1 and the floor slab 2 form an integral whole after the concrete is poured. The depth of the recess 201 is less than the thickness of the floor slab 2 to ensure the structural strength of the floor slab 2 near the exterior wall of the building structure.

[0025] Please see the appendix Figure 3 The aforementioned cold joint anti-leakage structure for the exterior facade construction of the building structure also includes a floor slab formwork 3, on which a tongue and groove 301 is formed, so that the floor slab 2 forms a planar plate structure with a recess 201 after being poured through the floor slab formwork 3.

[0026] Based on the structural design of the non-horizontal construction cold joint 4, when making the floor slab formwork 3, a tongue and groove of appropriate size and shape is reserved at the corresponding position, so that a recess 201 can be formed at the top outer end of the floor slab 2 after the concrete is poured.

[0027] Please see the appendix Figure 2 and attached Figure 3 The construction method and working principle of this utility model are as follows:

[0028] The floor slab formwork 3 with tongue and groove joint 301 is used as the formwork for the floor slab 2 at the external wall or column structure 1. After the concrete of the floor slab 2 is poured, the floor slab formwork 3 is removed, forming a floor slab 2 with a recess 201 on the outside. When the external wall or column structure 1 on top of the floor slab 2 is poured, the concrete automatically fills the recess 201 and is vibrated and compacted to form a protrusion 101, thereby transforming the traditional horizontal construction cold joint 5 into a non-horizontal construction cold joint 4 with a Z-shaped structure.

[0029] The non-horizontal construction cold joint 4 of the Z-shaped structure extends the length of the cold joint, thereby extending the leakage path of external water to the inside. In addition, the height difference between the inside and the outside increases the difficulty of water seepage, thus effectively blocking external rainwater and achieving the purpose of reducing the leakage of the building structure's exterior walls.

[0030] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A construction structure exterior facade construction cold joint anti-leakage structure, characterized in that, include: A protrusion (101) is formed at the bottom of the exterior wall or column structure (1) of the building structure, and a recess (201) is formed at the top of the floor slab (2) located at the bottom of the exterior wall or column structure (1). The protrusion (101) is matched and set in the recess (201), and a non-horizontal construction cold joint (4) is formed between the exterior wall or column structure (1) and the floor slab (2).

2. The construction structure exterior facade construction cold joint anti-leakage construction according to claim 1, characterized in that, The protrusion (101) is located on the bottom outer side of the exterior wall or column structure (1) and is flush with the exterior facade of the exterior wall or column structure (1); the recess (201) is located on the top outer side of the floor slab (2) and is flush with the exterior facade of the floor slab (2), so that the non-horizontal construction cold joint (4) has a Z-shaped structure.

3. The cold joint anti-leakage structure for the exterior facade of a building structure as described in claim 1 or 2, characterized in that, The thickness of the protrusion (101) is the same as the depth of the recess (201), and the depth of the recess (201) is less than the thickness of the floor slab (2).

4. The cold joint anti-leakage structure for the exterior facade of a building structure as described in claim 3, characterized in that, The aforementioned cold joint anti-leakage structure for the exterior facade of the building structure also includes a floor slab formwork (3), on which a tongue and groove (301) is formed, so that the floor slab (2) forms a planar plate structure with a recess (201) after being poured through the floor slab formwork (3).

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