Anti-displacement fixing device for chamfering steel bar of concrete stand column
By using a concrete column chamfered steel bar anti-displacement fixing device, and utilizing the modular design of support rods and positioning rings, the problem of steel bar installation accuracy and quality control in large railway station building projects has been solved, thereby improving the accuracy of steel bar positioning and construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 3 GRP CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-05
AI Technical Summary
In large-scale high-speed railway station construction projects, the installation accuracy of steel bars at the chamfered corners of concrete columns is high and the construction quality control is difficult. Existing technologies cannot ensure the accurate positioning of steel bars, resulting in uneven steel bar spacing, non-compliance with design requirements for protective layer thickness, and a high likelihood of rework.
A concrete column chamfered steel bar anti-displacement fixing device is adopted, including support rod, protrusion block, fixing rod and positioning ring hoop. It is connected by bolts to form a modular design to ensure that the steel bar does not move during the concrete pouring process. The positioning ring hoop is used to limit and fix the steel bar.
This effectively prevents the displacement of steel bars during concrete pouring due to impact and vibration, ensuring uniform spacing of steel bars, and that the thickness of the protective layer meets design requirements. It also avoids rework and improves construction efficiency and quality.
Smart Images

Figure CN224200149U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a device for fixing and preventing displacement of chamfered steel bars in concrete columns. Background Technology
[0002] Large high-speed railway station building projects feature concrete columns with large cross-sections, large diameter and high strength reinforcing bars, high precision requirements for bar installation, significant challenges in construction quality control, and stringent installation and acceptance standards. For chamfered columns, to ensure precise bar placement at the chamfer, guarantee the concrete cover thickness meets design requirements, eliminate common quality defects, and shorten construction time, we propose a concrete column chamfered bar anti-displacement fixing device. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a device for fixing the chamfered steel bars of concrete columns to prevent displacement.
[0004] This utility model is achieved using the following technical solution: a concrete column chamfered steel bar anti-displacement fixing device, including a support rod, both ends of which are fixedly connected to protruding blocks, one end of the support rod is provided with a first fixing rod, both ends of the first fixing rod are fixedly connected to a first fixing block, the end of the support rod away from the first fixing rod is provided with a second fixing rod, both ends of the second fixing rod are fixedly connected to a second fixing block, and the inner walls of the support rod, the first fixing rod and the second fixing rod are all fixedly connected to positioning rings.
[0005] The above technical solution involves placing the protruding blocks at both ends of the support rod inside the first and second fixing blocks, and then fixing them with bolts to install the support rod. Next, the chamfered steel bars are placed in the positioning rings inside the support rod, limiting their position and securing them. This ensures accurate installation of the chamfered steel bars in the column and prevents displacement of the steel bars due to the impact force during concrete pouring and vibration during compaction, thus avoiding problems such as uneven steel bar spacing and excessively large or small concrete cover. It also ensures the cross-sectional dimensions of the column steel bars and the construction quality of the embedded steel bars, avoiding rework and demonstrating good prospects for widespread application.
[0006] As a further improvement to the above solution, the support rod is arc-shaped, and the number of support rods is set to four. The size of the protrusion is adapted to the size of the first fixing block and the second fixing block.
[0007] With the above technical solution, the support rod is located at the end adjacent to the first fixed rod and the second fixed rod, which facilitates subsequent splicing.
[0008] As a further improvement to the above solution, two of each of the first and second fixing rods are provided.
[0009] As a further improvement to the above solution, the protruding block and the first fixing block are connected by bolts.
[0010] The above technical solution connects the protruding block and the first fixed block with bolts, which facilitates splicing during use and improves construction efficiency.
[0011] As a further improvement to the above solution, the protruding block and the second fixing block are connected by bolts.
[0012] The above technical solution connects the protruding block and the second fixing block with bolts, which facilitates splicing during use and improves construction efficiency.
[0013] As a further improvement to the above solution, the support rod, the first fixing rod, and the second fixing rod are spliced together to form a rounded rectangle.
[0014] Through the above technical solution, the arc angle of the support rod can be processed according to the type of chamfered column, the length of the first and second fixing rods can be processed according to the length of the column, and the spacing and number of positioning rings can be processed and adjusted according to the construction requirements. The whole adopts a modular design, which is convenient for subsequent splicing and improves the convenience of transportation.
[0015] As a further improvement to the above scheme, the number of positioning rings is set to several.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This utility model, through the installation of a support rod, protruding blocks, a first fixing rod, a first fixing block, a second fixing rod, and a second fixing block, specifically involves placing the protruding blocks at both ends of the support rod inside the first and second fixing blocks, and then fixing them with bolts to install the support rod. Next, the chamfered steel bars are placed in the positioning rings inside the support rod, limiting their position and securing them. This ensures the accurate installation position of the chamfered steel bars in the column and avoids displacement of the steel bars due to the impact force during concrete pouring and vibration of the channel, which could lead to uneven steel bar spacing, excessively large or small concrete cover, etc. It ensures the cross-sectional dimensions of the column steel bars and the construction quality of the embedded steel bars, avoiding rework and showing good prospects for widespread application.
[0018] This utility model adopts a modular design by setting up a support rod, a protruding block, a first fixing rod, a first fixing block, a second fixing rod, and a second fixing block. Specifically, the support rod, the first fixing rod, and the second fixing rod are connected by the protruding block, the first fixing block, and the second fixing block. It is simple and convenient to operate, which can not only ensure the accuracy of the placement of the main reinforcement of the column, but also speed up the processing and installation of the stirrups, and better ensure the firmness of the main reinforcement of the column. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the overall structure of this utility model after assembly;
[0021] Figure 3 This is a schematic diagram of the exploded structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the overall bottom view of the present invention;
[0023] Figure 5 This is a schematic diagram of the disassembled structure of this utility model.
[0024] Explanation of key symbols:
[0025] 1. Support rod; 2. Protruding block; 3. First fixing rod; 4. First fixing block; 5. Second fixing rod; 6. Second fixing block; 7. Positioning ring. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0027] Example:
[0028] Please combine Figure 1-5 This embodiment of a concrete column chamfered steel bar anti-displacement fixing device includes a support rod 1, with protrusions 2 fixedly connected to both ends of the support rod 1. A first fixing rod 3 is provided at one end of the support rod 1, with first fixing blocks 4 fixedly connected to both ends of the first fixing rod 3. A second fixing rod 5 is provided at the end of the support rod 1 away from the first fixing rod 3, with second fixing blocks 6 fixedly connected to both ends of the second fixing rod 5. Positioning rings 7 are fixedly connected to the inner walls of the support rod 1, the first fixing rod 3, and the second fixing rod 5. The protrusions 2 at both ends of the support rod 1 are placed... The first fixing block 4 and the second fixing block 6 are installed inside the support rod 1 and then fixed with bolts. The chamfered steel bar is then placed in the positioning ring 7 inside the support rod 1 to limit the position of the positioning ring 7 and tie it to ensure that the chamfered steel bar of the column is installed in an accurate position. This avoids displacement of the steel bar caused by the impact force during concrete pouring and vibration of the channel, which could lead to uneven steel bar spacing, excessive or insufficient concrete cover, and other problems. It ensures the cross-sectional dimensions of the column steel bar and the construction quality of the embedded steel bar, avoids rework, and has good prospects for promotion and application.
[0029] The support rod 1 is arc-shaped, and there are four support rods 1. The size of the protruding block 2 is adapted to the size of the first fixing block 4 and the second fixing block 6.
[0030] There are two of each of the first fixing rod 3 and the second fixing rod 5.
[0031] The protruding block 2 and the first fixing block 4 are connected by bolts. The support rod 1, the first fixing rod 3 and the second fixing rod 5 are connected by the protruding block 2, the first fixing block 4 and the second fixing block 6. The modular design makes operation simple and convenient. It can not only ensure the accuracy of the placement of the main reinforcement of the column, but also speed up the processing and installation of the stirrups.
[0032] The protruding block 2 and the second fixing block 6 are connected by bolts.
[0033] The support rod 1, the first fixing rod 3, and the second fixing rod 5 are spliced together to form a rounded rectangle.
[0034] The number of positioning rings 7 is set to a certain number.
[0035] The implementation principle of the anti-displacement fixing device for chamfered steel bars of concrete columns in this embodiment is as follows: First, the positioning rings 7 inside the first fixing rod 3 and the second fixing rod 5 are clamped onto the steel bars of the concrete column to be poured, and then they are tied and fixed. The positions of the first fixing rod 3 and the second fixing rod 5 are fixed. Then, the protruding blocks 2 at both ends of the support rod 1 are placed inside the first fixing block 4 and the second fixing block 6, and then fixed with bolts. The support rod 1 is installed. Then, the chamfered steel bars are placed in the positioning rings 7 inside the support rod 1, the positioning rings 7 are limited, and they are tied and fixed to ensure the column... The chamfered steel bars are installed in an accurate position, avoiding displacement of the steel bars caused by the impact force during concrete pouring and vibration of the channel, which can lead to problems such as uneven steel bar spacing and excessively large or small concrete cover. This ensures the cross-sectional dimensions of the column steel bars and the construction quality of the embedded steel bars, avoiding rework and showing good prospects for widespread application. The support rod 1, the first fixing rod 3 and the second fixing rod 5 are connected by the protruding block 2, the first fixing block 4 and the second fixing block 6. The modular design makes operation simple and convenient. It can not only ensure the accuracy of the placement of the column main reinforcement, but also speed up the processing and installation of stirrups, and better ensure the firmness of the column main reinforcement.
[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A device for preventing displacement of chamfered reinforcing bars in concrete columns, characterized in that, The system includes a support rod (1), both ends of which are fixedly connected to protrusions (2). One end of the support rod (1) is provided with a first fixing rod (3), both ends of which are fixedly connected to a first fixing block (4). The end of the support rod (1) away from the first fixing rod (3) is provided with a second fixing rod (5), both ends of which are fixedly connected to a second fixing block (6). The inner walls of the support rod (1), the first fixing rod (3), and the second fixing rod (5) are all fixedly connected with positioning rings (7).
2. The anti-displacement fixing device for chamfered steel bars of concrete columns as described in claim 1, characterized in that: The support rod (1) is arc-shaped, and there are four support rods (1). The size of the protrusion (2) is adapted to the size of the first fixing block (4) and the second fixing block (6).
3. The anti-displacement fixing device for chamfered reinforcing bars of a concrete column as described in claim 1, characterized in that: The number of the first fixing rod (3) and the second fixing rod (5) are both set to two.
4. The anti-displacement fixing device for chamfered reinforcing bars of a concrete column as described in claim 2, characterized in that: The protruding block (2) and the first fixing block (4) are connected by bolts.
5. The anti-displacement fixing device for chamfered reinforcing bars of a concrete column as described in claim 4, characterized in that: The protruding block (2) and the second fixing block (6) are connected by bolts.
6. The anti-displacement fixing device for chamfered reinforcing bars of a concrete column as described in claim 1, characterized in that: The support rod (1), the first fixing rod (3), and the second fixing rod (5) are spliced together to form a rounded rectangle.
7. The anti-displacement fixing device for chamfered reinforcing bars of a concrete column as described in claim 1, characterized in that: The number of positioning rings (7) is set to several.