Construction method for chamfering concrete column
By installing rounded corner component strips on the inside of the concrete column formwork and combining them with reinforcement measures, the problem of grout leakage at the corner joints of the concrete column and wooden formwork was solved, achieving high-quality rounded corners and gap sealing of the concrete column, thus improving construction efficiency and appearance quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-09
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, grout leakage is prone to occur at the corner joints of concrete column wooden formwork, resulting in poor construction quality, making it impossible to effectively form universal steel formwork, increasing construction costs and reducing efficiency.
Rounded corner component strips are installed at the four inner corners of the concrete column formwork, and fixed with double-sided adhesive strips and self-tapping screws. Finally, they are reinforced with column hoops and removed after the concrete is poured, thus achieving rounded corners and sealing of gaps in the concrete column.
It effectively prevents grout leakage, improves construction and appearance quality, reduces the risk of personal injury, extends service life, reduces subsequent repair procedures, and improves construction efficiency.
Smart Images
Figure CN121803036A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of building construction technology, and specifically relates to a construction method for rounding the corners of concrete columns. Background Technology
[0002] In the construction industry, the continuous development of industrial technology, alumina, new energy manufacturing, and the battery industry has led to the continuous improvement of industrial plants and civil buildings, resulting in continuous waste of resources (such as exterior wall plastering). With increasing environmental awareness, there is a growing trend towards plaster-free concrete construction, reducing procedures and building materials. After the columns are constructed, no further exterior finishing is required, significantly increasing the requirements for appearance. For columns and structures, especially bridge columns, tall columns in greenhouses and storage yards, and other exposed column structures, to save costs, it is usually required that there be no formwork joints or a reduction in the number of joints in conventional construction. Steel formwork is commonly used, but its implementation cost is high. Due to the varying sizes and tapers of columns in building systems, a universal steel formwork cannot be formed. In actual construction, only large structural columns and bridge columns use steel formwork; other structures use wooden formwork. Wooden formwork is inconvenient for chamfering the edges and corners of concrete columns. Furthermore, the appearance shaping of concrete columns with wooden formwork is mainly at the bottom and corner joints, which are prone to leakage due to unavoidable gaps. This results in a quality defect rate of over 85% at the corner joints, leading to poor construction quality and requiring subsequent repair procedures, thus reducing construction efficiency. Summary of the Invention
[0003] The present invention provides a construction method for rounding the corners of concrete columns, which avoids grout leakage at the corner joints of concrete columns and wooden formwork, thereby improving the construction quality and appearance quality of concrete columns.
[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention discloses a construction method for rounding the corners of a concrete column, comprising the following steps: S1. Install the wooden formwork for concrete columns according to the construction requirements of concrete columns and shear walls. After the wooden formwork for concrete columns is installed, a concrete column formwork is formed. Install reinforcing column hoops on the outside of the concrete column formwork to initially reinforce the concrete column formwork. S2. Install rounded corner component strips at the four inner corners of the concrete column formwork. The rounded corner component strip includes a right-angle mounting surface that matches the four inner corners of the concrete column formwork and an arc-shaped chamfered concave surface that rounds the corners of the concrete column. The right-angle mounting surface and the arc-shaped chamfered concave surface are set back to back. Double-sided adhesive strips are pasted on two adjacent concrete wooden formworks at the four inner corners of the concrete column formwork. The two sides of the right-angle mounting surface of the rounded corner component strip are glued to the corresponding adjacent concrete wooden formworks by double-sided adhesive strips. The upper and lower ends of the rounded corner component strip are fixed to the corresponding concrete wooden formworks at the upper and lower ends of the concrete column formwork by self-tapping screws. S3. Tighten and reinforce the column hoops to provide final reinforcement to the concrete column formwork; S4. Pour concrete into the final reinforced concrete column formwork, and the concrete solidifies to form a concrete column. S5. After the concrete column reaches the design strength, the formwork is removed. First, remove the self-tapping screws, then remove the reinforcing column hoops, then remove the wooden formwork for the concrete column, and finally remove the rounded corner component strips.
[0005] Furthermore, in step S2, the rounded corner component strip is a structural component made of polyvinyl chloride or polypropylene.
[0006] Furthermore, in step S2, the thickness of the double-sided adhesive strip is 0.5 mm.
[0007] Furthermore, in step S5, the concrete column is demolded when its strength reaches 70%.
[0008] The beneficial effects of this invention are: This application discloses a construction method for rounding corners in concrete columns, applicable to the construction of concrete columns using wooden formwork. The method includes installing wooden formwork to form the concrete column mold; initially reinforcing the outside of the concrete column mold with reinforcing column hoops; fixing rounded corner component strips at the four inner corners of the concrete column mold using double-sided adhesive strips and self-tapping screws; the two sides of the right-angle mounting surface of the rounded corner component strips are adhered and fixed to the corresponding adjacent wooden formwork using double-sided adhesive strips, with the rounded chamfered concave surface of the rounded corner component strips facing inwards towards the inside of the concrete column mold; finally reinforcing the concrete column mold by tightening the reinforcing column hoops; pouring concrete into the finally reinforced concrete column mold to form the concrete column; and removing the formwork after the concrete column reaches its design strength. Rounded corner components are installed at the four inner corners of the concrete column formwork. During the concrete pouring process, the rounded corner components directly round the corners of the concrete column, facilitating corner rounding, effectively dispersing external impact, avoiding stress concentration, improving the edge resistance of the concrete column, reducing the risk of cracking, and extending its service life. The rounded corners of the concrete column are no longer sharp, reducing the risk of scratches and injuries to personnel. At the same time, the rounded corner components cover the gaps at the corner joints of the upper and lower concrete and wooden formwork, sealing the gaps and preventing grout leakage at the corner joints during concrete pouring. This avoids quality defects at the corner joints of the concrete column, improves the construction and appearance quality of the concrete column, reduces subsequent finishing processes, and increases construction efficiency. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0010] Figure 1 This is a flowchart of a construction method for rounding the corners of a concrete column according to an embodiment of the present invention; Figure 2 This is a top view of a rounded corner component strip installed on a concrete column formwork, according to an embodiment of the present invention. Figure 3 This is a structural schematic diagram of a rounded corner component strip provided in an embodiment of the present invention; Figure 4 This is a model diagram of a rounded corner component strip installed on a concrete column formwork, provided by an embodiment of the present invention; Figure 5 This is an enlarged view of a model of a rounded corner component strip installed on a concrete column formwork, as provided in an embodiment of the present invention.
[0011] Figure label: 1. Concrete column, 2. Concrete column formwork, 3. Reinforcing column hoop, 4. Self-tapping screws, 5. Rounded corner component strips. Detailed Implementation
[0012] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0014] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a construction method for rounding the corners of a concrete column according to the present invention includes the following steps: S1. Install the concrete column wooden formwork 2 according to the construction requirements of the concrete column 1 and the shear wall. After the concrete column wooden formwork 2 is installed, the concrete column formwork is formed. Install the reinforcing column hoop 3 on the outside of the concrete column formwork to initially reinforce the concrete column formwork. The reinforcing column hoop 3 can adopt the existing technology and existing solutions of square timber, steel pipe and fastening bolt structure.
[0015] S2. Install rounded corner component strips 5 at the four inner corners of the concrete column formwork. Each rounded corner component strip 5 includes a right-angle mounting surface that mates with the four inner corners of the concrete column formwork and a rounded chamfered concave surface that rounds the corners of the concrete column 1. The right-angle mounting surface and the rounded chamfered concave surface face away from each other. Double-sided adhesive strips are pasted onto two adjacent concrete wooden formwork pieces at the four inner corners of the concrete column formwork. The two sides of the right-angle mounting surface of the rounded corner component strip 5 are adhered to the corresponding adjacent concrete wooden formwork pieces using double-sided adhesive strips. The upper and lower ends of the rounded corner component strip 5 are fixed to the concrete formwork using self-tapping screws 4. On the concrete wooden formwork corresponding to the upper and lower ends of the earthen column formwork; wherein, the rounded corner component strip 5 is a structural component made of engineering plastic or aluminum alloy; the thickness of the double-sided adhesive strip is 0.1mm-5mm, such as 0.1mm or 0.2mm or 0.5mm or 1mm or 2mm or 5mm; adhesive tape is applied to the joints other than the four inner corners of the concrete column formwork to prevent grout leakage during the concrete pouring process; corresponding holes are made on both sides of the right-angle mounting surface of the upper and lower ends of the rounded corner component strip 5 and at the corresponding positions of the concrete column wooden formwork 2 to facilitate the installation of self-tapping screws 4.
[0016] S3. Tighten and reinforce column hoops 3 to provide final reinforcement to the concrete column formwork; S4. Pour concrete into the final reinforced concrete column formwork, and the concrete solidifies to form concrete column 1. S5. After the concrete column 1 reaches the design strength, the formwork is removed. First, remove the self-tapping screws 4, then remove the reinforcing column hoop 3, then remove the concrete column wooden formwork 2, and finally remove the rounded corner component strip 5.
[0017] The above-mentioned method for rounding the corners of concrete columns is used in the construction of concrete columns using wooden formwork. This method includes installing wooden formwork 2 to form the concrete column mold according to the construction requirements of the concrete column 1 and shear wall; initially reinforcing the concrete column mold by installing reinforcing column hoops 3 on the outside; fixing rounded corner component strips 5 at the four corners of the inner side of the concrete column mold using double-sided adhesive strips and self-tapping screws 4; the two sides of the right-angle mounting surface of the rounded corner component strip 5 are bonded and fixed to the corresponding adjacent wooden formwork 2 using double-sided adhesive strips, with the rounded corner concave surface of the rounded corner component strip 5 facing inwards; finally reinforcing the concrete column mold by tightening the reinforcing column hoops 3; pouring concrete into the finally reinforced concrete column mold to form the concrete column 1; and removing the formwork after the concrete column 1 reaches its design strength. Rounded corner component strips 5 are installed at the four inner corners of the concrete column formwork. During the process of pouring concrete to form the concrete column, the rounded corner component strips 5 directly round the four corners of the concrete column 1, which facilitates the rounding of the concrete column 1, effectively disperses external impact, avoids stress concentration, improves the damage resistance of the concrete column 1 edges, reduces the risk of cracking, and extends the service life. After rounding, the edges of the concrete column 1 are no longer sharp, reducing the risk of scratches and injuries to personnel and lowering the risk of personal injury. At the same time, double-sided adhesive strips and self-tapping screws 4 further round the corners. The component strip 5 is stably fixed to the concrete column wooden formwork 2 at the four inner corners of the concrete column formwork. The rounded corner component strip 5 covers the gaps at the corner joints of the upper and lower joints of the concrete wooden formwork 2, sealing the gaps and preventing grout leakage at the corner joints of the concrete column wooden formwork 2 during concrete pouring. This avoids quality defects at the corner joints of the concrete column 1, improves the construction and appearance quality of the concrete column 1, reduces subsequent finishing procedures, and increases construction efficiency. The rounded corner construction method of the concrete column in this application is particularly suitable for the construction of concrete square columns with wooden formwork, such as bridge columns and tall columns in greenhouse storage yards. It rounds the corners of the concrete column during the concrete pouring process, preventing quality defects at the corner joints, improving the construction and appearance quality of the concrete column, increasing the acceptance rate, reducing subsequent finishing procedures, and increasing construction efficiency.
[0018] As one possible implementation method, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, in step S2, the rounded corner component 5 is a structural component made of polyvinyl chloride or polypropylene.
[0019] For example, the rounded corner component strip 5 is a structural component made of polypropylene. It has low manufacturing cost, excellent toughness, chemical corrosion resistance and good processing performance, good low temperature resistance, smooth surface, can effectively avoid grout leakage and deformation, and can be repeatedly recycled. It is suitable for rounding corners of square concrete columns.
[0020] In one possible implementation, in step S2, the thickness of the double-sided adhesive strip is 0.5 mm.
[0021] The thickness of the double-sided adhesive strip should be 0.5mm to prevent the concrete column formwork from deforming or shifting due to excessive thickness, which could lead to safety hazards.
[0022] As one possible implementation method, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, in step S5, the concrete column 1 is demolded when its strength reaches 70%.
[0023] When the concrete strength of column 1 reaches 70%, the formwork is removed, ensuring that column 1 has sufficient compressive and tensile strength to withstand its own weight and construction loads, preventing deformation, cracking, crushing, or even local collapse. Simultaneously, it avoids edge chipping, peeling, or surface cracking due to insufficient strength, ensuring the appearance quality of the concrete and the durability of the structure.
[0024] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.
Claims
1. A construction method for rounding corners of concrete columns, characterized in that, Includes the following steps: S1. Install the concrete column wooden formwork (2) according to the construction requirements of the concrete column (1) and shear wall. After the concrete column wooden formwork (2) is installed, a concrete column formwork is formed. Install the reinforcing column hoop (3) on the outside of the concrete column formwork to initially reinforce the concrete column formwork. S2. Install rounded corner component strips (5) at the four inner corners of the concrete column formwork. The rounded corner component strips (5) include a right-angle mounting surface that matches the four inner corners of the concrete column formwork and an arc-shaped chamfered concave surface that rounds the corners of the concrete column (1). The right-angle mounting surface and the arc-shaped chamfered concave surface are set facing away from each other. Double-sided adhesive strips are pasted on two adjacent concrete wooden formworks at the four inner corners of the concrete column formwork. The two sides of the right-angle mounting surface of the rounded corner component strips (5) are glued to the corresponding adjacent concrete wooden formworks by double-sided adhesive strips. The upper and lower ends of the rounded corner component strips (5) are fixed to the corresponding concrete wooden formworks at the upper and lower ends of the concrete column formwork by self-tapping screws (4). S3. Tighten and reinforce the column hoop (3) to provide final reinforcement to the concrete column formwork; S4. Pour concrete into the final reinforced concrete column formwork, and the concrete solidifies to form a concrete column (1). S5. After the concrete column (1) reaches the design strength, the formwork is removed. First, remove the self-tapping screws (4), then remove the reinforcing column hoop (3), then remove the concrete column wooden formwork (2), and finally remove the rounded corner component strip (5).
2. The construction method for rounding corners of a concrete column according to claim 1, characterized in that, In step S2, the rounded corner component strip (5) is a structural component made of polyvinyl chloride or polypropylene.
3. The construction method for rounding corners of a concrete column according to claim 1, characterized in that, In step S2, the thickness of the double-sided adhesive strip is 0.5 mm.
4. The construction method for rounding corners of a concrete column according to claim 1, characterized in that, In step S5, the concrete column (1) is demolded when its strength reaches 70%.