Steel bar spacing and protective layer double-U-shaped control clamp
By designing a double U-shaped control card for rebar spacing and protective layer, using HPB300 round steel and an anti-rust coating, the problems of deformation and formwork damage caused by traditional plastic cards were solved. This enabled stable control of rebar spacing and protective layer thickness, improving the quality of concrete components and the service life of formwork.
Patent Information
- Application Number
- CN202520258933.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Traditional plastic clips are prone to deformation when controlling the thickness of the concrete cover for shear wall reinforcement, making it difficult to effectively control the spacing between the two layers of vertical reinforcement. They can also easily lead to damage to the formwork and affect the quality of the concrete.
Design a double U-shaped control clip for rebar spacing and protective layer, made of HPB300 round steel, with outer and inner bends at both ends. The outer bend is coated with an anti-rust coating, and the inner bend clamps horizontal rebars. It is fixed by binding wire to ensure that the clip is in contact with the formwork and to control the rebar spacing and protective layer thickness.
It achieves stable control of the spacing of shear wall reinforcement and the thickness of the protective layer, improves the integrity of concrete components and the service life of formwork, and ensures the accuracy of the reinforcement cage spacing.
Smart Images
Figure CN223893660U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of steel reinforcement engineering construction technology, specifically, it is a double U-shaped control card for steel reinforcement spacing and protective layer. Background Technology
[0002] Controlling the thickness of the protective layer has a significant impact on the durability and stress resistance of reinforced concrete members. Strictly controlling the thickness of the protective layer is an important measure to ensure the quality of reinforced concrete members. However, the traditional method of controlling the lateral protective layer thickness of shear wall reinforcement using plastic clips has problems such as the plastic clips being prone to deformation, reducing the integrity of the concrete, and the inability to control the spacing between two layers of vertical reinforcement.
[0003] Therefore, the known plastic cards have all the aforementioned inconveniences and problems. Utility Model Content
[0004] The purpose of this utility model is to propose a safe and reliable double U-shaped control card for rebar spacing and protective layer.
[0005] To achieve the above objectives, the technical solution of this utility model is:
[0006] A double U-shaped control card for rebar spacing and protective layer, comprising a double U-shaped control card body, characterized in that:
[0007] The dual U-shaped control card body is provided with a connecting rod, and each end of the connecting rod is provided with a corresponding outer bend and an inner bend. The outer bend and the inner bend are connected and the bends are in opposite directions. The cross section of the connection between the outer bend and the inner bend is S-shaped, thus forming a dual U-shaped control card.
[0008] Among them: When using the double U-shaped control card, the outer side of the outer bend is coated with an anti-rust coating so that the outer bend contacts the outer template; the horizontal steel bar of the shear wall is inserted into the bend of the inner side bend, and the connection between the outer side bend and the inner side bend is tied and fixed to the vertical steel bar of the shear wall with tie wire.
[0009] The double U-shaped control card for rebar spacing and protective layer of this utility model can also be further implemented using the following technical measures.
[0010] The aforementioned double U-shaped control card for rebar spacing and protective layer, wherein the body of the double U-shaped control card is made of HPB300 round steel.
[0011] The aforementioned double U-shaped control card for rebar spacing and protective layer, wherein the double U-shaped control card body is an integral structure.
[0012] After adopting the above technical solution, the double U-shaped control card for rebar spacing and protective layer of this utility model has the following advantages:
[0013] 1. The fixture has a simple structure and is easy to manufacture;
[0014] 2. Both ends have anti-rust coating and can directly contact the template;
[0015] 3. It can control the cross-sectional dimensions of components, the spacing of double-row steel bars in shear walls, and the spacing between wall reinforcement and formwork, thus ensuring the thickness of the steel reinforcement protective layer. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the double U-shaped control card structure for rebar spacing and protective layer in an embodiment of this utility model;
[0017] Figure 2 This is a schematic diagram illustrating the usage status of the double U-shaped control card for rebar spacing and protective layer in an embodiment of this utility model. Detailed Implementation
[0018] The present invention will be further described below with reference to the embodiments and accompanying drawings. Example
[0019] Please see now Figure 1 and Figure 2 This utility model's double U-shaped control card for rebar spacing and protective layer is made of round steel (HPB300) with a total length of 200mm, suitable for 200mm thick walls (the total length of the control card can be adjusted according to the wall thickness). Each end of the round steel connecting rod 1 has a corresponding outer bend 6 and an inner bend 7, which are connected with opposite bend directions. The cross-section of the connection between the outer and inner bends is S-shaped, thus forming the double U-shaped control card.
[0020] The construction method of the double U-shaped control card for rebar spacing and protective layer of this utility model is as follows: The outer side of the outer bend 6 is coated with an anti-rust coating 2, allowing the outer bend to contact the outer formwork 5; the horizontal rebar 3 of the shear wall is inserted into the bend of the inner bend 7, and the connection between the outer bend 6 and the inner bend 7 is tied and fixed to the vertical rebar 4 of the shear wall with tie wire. The double U-shaped inner groove of the batch-processed control card is directly clipped onto the horizontal rebar of the shear wall and then fixed with tie wire. The control card has an anti-rust layer at both ends, allowing direct contact with the formwork.
[0021] This utility model possesses substantial features and significant technological advancements. Traditionally, the lateral protective layer thickness of shear wall reinforcement is controlled using plastic clips, which suffer from problems such as easy deformation of the clips, reduced concrete integrity, and inability to control the spacing between two layers of vertical reinforcement. Existing double-F type fixing clips, due to their small end bearing area, are prone to formwork damage, affecting the number of formwork reuses and the appearance quality of the concrete. This utility model's double-U-shaped control clip for reinforcement spacing and protective layer adopts a double-U-shaped structure with rust-proof coatings at both ends, allowing direct contact with the formwork. It can control both the component cross-sectional dimensions and the spacing of the double rows of shear wall reinforcement (ensuring the spacing of the reinforcement cage); simultaneously, the outer U-shaped groove can control the spacing between the wall reinforcement and the formwork, ensuring the thickness of the reinforcement protective layer. The total length and inner and outer bending dimensions of the control clip can be adjusted according to the wall thickness and reinforcement protective layer requirements, making it highly adaptable.
[0022] The double U-shaped control card for rebar spacing and protective layer of this utility model has been applied in the urban village renovation project in Beizhai area of Changzhi, and has achieved good economic benefits.
[0023] The above embodiments are for illustrative purposes only and are not intended to limit the scope of this utility model. Those skilled in the art can make various modifications and variations without departing from the spirit and scope of this utility model. Therefore, all equivalent technical solutions should also fall within the scope of this utility model and should be defined by the claims.
Claims
1. A double U-shaped control card for rebar spacing and protective layer, comprising a double U-shaped control card body, characterized in that: The double U-shaped control card body is provided with a connecting rod (1), and each end of the connecting rod is provided with a corresponding outer bend (6) and inner bend (7). The outer bend (6) and inner bend (7) are connected, and the bends are in opposite directions. The cross section of the connection between the outer bend and the inner bend is S-shaped, thus achieving a double U-shaped control card. Among them: When the double U-shaped control card is used, the outer side of the outer bend (6) is coated with an anti-rust coating (2) so that the outer bend contacts the outer template (5); the horizontal steel bar (3) of the shear wall is inserted into the bend of the inner bend (7), and the connection between the outer bend (6) and the inner bend (7) is tied and fixed with the vertical steel bar (4) of the shear wall with tie wire.
2. The double U-shaped control card for rebar spacing and protective layer as described in claim 1, characterized in that, The body of the double U-shaped control card is made of HPB300 round steel.
3. The double U-shaped control card for rebar spacing and protective layer as described in claim 1, characterized in that, The dual U-shaped control card body is a single integrated structure.