Beam-column rabbet formwork splicing structure for improving appearance quality of fair-faced concrete

Abstract

The utility model relates to the technical field of building construction, and concretely relates to a beam column rabbet formwork splicing structure for improving the appearance quality of fair-faced concrete, which comprises column concrete, further comprises an outer layer formwork, which is arranged around the fair-faced concrete column; an inner layer formwork, which is fixed to the inner side upper part of the outer layer formwork, and the lower edge of the inner layer formwork is higher than the lower edge of the outer layer formwork, so that the outer layer formwork and the inner layer formwork together enclose a rabbet groove around the column; compared with the traditional column beam formwork reinforcement, the utility model adopts a rabbet mode to perfectly connect the position where the column and the beam are connected, realizes the prevention of cement slurry flow and the hiding of the joint, and greatly improves the visual effect of the fair-faced concrete column.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a beam-column tongue-and-groove formwork splicing structure for improving the appearance quality of fair-faced concrete. Background Technology

[0002] In the construction of cast-in-place fair-faced concrete structures, beam-column joints are key areas where stress and appearance intersect, and their forming quality directly affects the integrity of the structure and the architectural decoration effect.

[0003] In traditional fair-faced concrete construction, beam-column joints are often spliced ​​using formwork that conforms to the column dimensions.

[0004] However, this splicing method can easily create vertical joints at the joint between the column top and the beam bottom, and improper construction can also lead to misalignment. In addition, cement slurry can easily leak from the joints during concrete pouring, contaminating the surface of the poured fair-faced concrete column and seriously affecting the molding quality and appearance.

[0005] Based on this, a beam-column tongue-and-groove formwork splicing structure for improving the appearance quality of fair-faced concrete is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a beam-column tongue-and-groove formwork splicing structure that improves the appearance quality of fair-faced concrete, so as to solve the problems mentioned in the background art.

[0007] The technical solution of this utility model is: a beam-column tongue-and-groove formwork splicing structure for improving the appearance quality of fair-faced concrete, including column concrete, and further including:

[0008] Outer formwork, which surrounds the fair-faced concrete column;

[0009] The inner template is fixed to the upper inner side of the outer template, and the lower edge of the inner template is higher than the lower edge of the outer template, so that together with the outer template, they form a tongue and groove around the top of the column.

[0010] In some embodiments, the vertical height of the inner template is 5cm, and the depth of the tongue and groove matches the height of the inner template.

[0011] In some embodiments, the inner template and the outer template are fixedly connected by connectors to form a standardized unit template assembly, which can be disassembled and reused as a whole.

[0012] In some embodiments, the tongue and groove has a rectangular cross-section, the width of which is adapted to the thickness of the outer template, so as to allow the ends of the beam template to be precisely embedded.

[0013] In some embodiments, the top surface of the column concrete is flush with the lower edge of the inner formwork, and the tongue and groove area is a recessed space without concrete.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] This invention uses a tongue-and-groove groove made of inner and outer templates pre-set at the top of the column. The lower end of the beam template is then embedded into this groove. This cleverly transfers the concrete joint between the beam and the column from the conspicuous vertical surface to the horizontal groove at the top of the column. After final molding, the joint is naturally hidden at the junction of light and shadow, making it visually difficult to detect. This achieves a seamless, high-grade fair-faced concrete finish. Attached Figure Description

[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall top view structure provided in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure provided in one embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Outer formwork; 2. Inner formwork; 3. Column concrete; 4. Tongue and groove joint. Detailed Implementation

[0021] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0022] This utility model provides an improved beam-column tongue-and-groove formwork splicing structure to enhance the appearance quality of fair-faced concrete. The technical solution of this utility model is as follows:

[0023] like Figures 1-2 As shown, a beam-column tongue-and-groove formwork splicing structure for improving the appearance quality of fair-faced concrete includes column concrete 3, and also includes:

[0024] Outer formwork 1 is set around the fair-faced concrete column. As the main component that bears the lateral pressure of the concrete, the outer formwork 1 is preferably made of high-strength film-coated plywood. This material is not only rigid and not easily deformed, which can ensure that the column edges are straight, but its surface polymer film layer also has the characteristics of being smooth, waterproof and corrosion resistant, which is the key to achieving the mirror effect of fair-faced concrete.

[0025] The inner template 2 is fixed to the upper inner side of the outer template 1, and the lower edge of the inner template 2 is higher than the lower edge of the outer template 1. Together with the outer template 1, they form a tongue and groove 4 around the top of the column. The inner template 2 is a functional component for forming the tongue and groove. Its material can be the same as that of the outer template 1. Its surface in contact with the concrete must be smooth and flat to ensure the forming quality of the inner wall of the tongue and groove 4.

[0026] like Figure 2 As shown, in one embodiment, the vertical height of the inner template 2 is 5cm, and the depth of the tongue and groove 4 matches the height of the inner template 2.

[0027] The inner template 2 and the outer template 1 are fixedly connected by connectors. The inner template 2 and the outer template 1 are reliably fixed by self-tapping screws or special positioning connectors to ensure that there is no relative displacement between them during concrete pouring and vibration. Together they form a standardized unit template assembly, which can be disassembled and reused as a whole.

[0028] The tongue and groove 4 has a rectangular cross-section, and its width is adapted to the thickness of the outer template 1 so that the ends of the beam template can be accurately embedded.

[0029] The top surface of the column concrete 3 is flush with the lower edge of the inner formwork 2, and the tongue and groove area 4 is a recessed space without concrete.

[0030] The specific working method is as follows: According to the column size, the outer template 1 and the inner template 2 with a height of 5cm are pre-assembled outside the site into a standardized unit template component with tongue and groove 4. The assembled unit template component (i.e. the outer template 1 with inner template 2) is hoisted to the column position. After precise alignment, the template is firmly fixed by a reinforcement system such as tie rods and column hoops.

[0031] At this point, the annular tongue and groove 4 formed by the bottom of the inner template 2 and the inner side of the outer template 1 has been formed.

[0032] Pour column concrete 3 into the reinforced column formwork. The pouring height of the concrete must be strictly controlled so that its top surface is flush with the lower edge of the inner formwork 2, that is, filling it to the bottom of the tongue and groove 4. During vibration, avoid direct impact of the vibrator on the inner formwork 2 to prevent displacement. After the column concrete 3 reaches the demolding strength, remove the tie rods, column hoops, outer formwork 1, and inner formwork 2. At this time, a regular and continuous annular tongue and groove 4 is formed at the top of the fair-faced concrete column, and the concrete surface of the column body is smooth and free of contamination.

[0033] When setting up the beam formwork, the lower end of the beam formwork is precisely embedded into the tongue and groove 4 already formed at the top of the column, and the inner side of the beam formwork is tightly abutted against the inner wall of the tongue and groove 4, thereby achieving the embedded connection between the beam formwork and the fair-faced concrete column.

[0034] At this point, the tongue and groove 4 plays a crucial role. The beam formwork embedded in the groove and the tongue and groove 4 form an effective sealing system, which can effectively prevent cement slurry from leaking from the bottom of the beam and avoid contaminating the already completed fair-faced column surface below. The construction joint between the beam and column is cleverly transformed from the traditional vertical open joint into a horizontal joint hidden inside the tongue and groove 4, which greatly improves the appearance quality of the joint. The beam and slab concrete flows into and fills the tongue and groove 4, and after hardening, it forms a mechanical interlocking similar to a "keyway", which enhances the overall connection of the beam and column joint.

[0035] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A beam-column tongue-and-groove formwork splicing structure for improving the appearance quality of fair-faced concrete, comprising column concrete (3), characterized in that, Also includes: Outer formwork (1), the outer formwork (1) is installed around the column concrete (3); The inner template (2) is fixed to the upper inner side of the outer template (1), and the lower edge of the inner template (2) is higher than the lower edge of the outer template (1), so that together with the outer template (1), they form a tongue and groove (4) around the column top.

2. The beam-column tongue-and-groove formwork splicing structure for improving the appearance quality of fair-faced concrete according to claim 1, characterized in that: The vertical height of the inner template (2) is 5cm, and the depth of the tongue and groove (4) matches the height of the inner template (2).

3. The beam-column tongue-and-groove formwork splicing structure for improving the appearance quality of fair-faced concrete according to claim 2, characterized in that: The inner template (2) and the outer template (1) are fixedly connected by connectors to form a standardized unit template assembly. This assembly can be disassembled and reused as a whole.

4. The beam-column tongue-and-groove formwork splicing structure for improving the appearance quality of fair-faced concrete according to claim 3, characterized in that: The tongue and groove (4) has a rectangular cross-section, and its width is adapted to the thickness of the outer template (1) so that the ends of the beam template can be accurately embedded.

5. The beam-column tongue-and-groove formwork splicing structure for improving the appearance quality of fair-faced concrete according to claim 1, characterized in that: The top surface of the column concrete (3) is flush with the lower edge of the inner template (2), and the tongue and groove (4) area is a groove space without concrete.

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