Narrow expansion joint bilateral column formwork reinforcing structure
By using steel pipe clamps and scissor jacks to reinforce narrow expansion joints, the problem of reinforcement at narrow expansion joints was solved, achieving efficient and low-cost reinforcement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional column formwork reinforcement methods are difficult to install in narrow expansion joints, posing a risk of formwork bursting and resulting in low construction efficiency.
The structure is reinforced with double-sided column formwork for narrow expansion joints, using steel pipe hoops and scissor jacks for reinforcement, and tie bolts to achieve rigid inter-layer connections. The structural stability is enhanced by the staggered arrangement of vertical square timber and steel pipe hoops.
It achieves stable reinforcement in narrow spaces, improves construction efficiency, reduces the risk of formwork bursting, and does not increase costs or extend the construction period.
Smart Images
Figure CN224002352U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building reinforcement technology, specifically a double-sided column formwork reinforcement structure for narrow expansion joints. Background Technology
[0002] In construction engineering, column formwork reinforcement is a crucial step in concrete pouring. Traditional reinforcement methods often use timber and steel pipes with tie bolts or diagonal braces, but these methods have the following drawbacks: space is limited in narrow expansion joints (such as between dense column groups), making traditional support systems difficult to install; and the risk of formwork bursting is high. Therefore, it is necessary to design a double-sided column formwork reinforcement structure for narrow expansion joints. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this utility model provides a double-sided column formwork reinforcement structure for narrow expansion joints that is easy to construct and has low cost.
[0004] The technical solution of this utility model to solve the above problems is:
[0005] The narrow expansion joint double-sided column formwork reinforcement structure includes two sets of column formwork. Several vertical square timbers are installed on the front, rear and outer sides of the two sets of column formwork. The outer sides of the two sets of column formwork are reinforced with steel pipe hoops, which abut against the vertical square timbers. Scissor jacks are symmetrically installed vertically at the expansion joint between the two sets of column formwork. The two ends of the scissor jacks abut against the inner side templates of the two sets of column formwork.
[0006] Furthermore, the steel pipe outer hoop adopts a layered staggered arrangement structure, with two sets of steel pipe outer hoop symmetrically arranged in each layer. The steel pipe outer hoop of adjacent layers are arranged alternately in the front-back direction and the left-right direction, and the rigid connection between layers is achieved by tie bolts.
[0007] Furthermore, each set of steel pipe outer clamps consists of three steel pipes, with gaps between adjacent steel pipes for tie bolts to pass through.
[0008] Furthermore, the gap between adjacent steel pipes is 10-20mm.
[0009] Furthermore, the outer diameter of the steel pipe is 48 mm and the wall thickness is 3 mm.
[0010] Furthermore, both sets of column molds have bolt holes running through them vertically, allowing tie bolts to pass through. Beneficial effects
[0011] This utility model has a simple operating structure and is easy to construct. The outer sides of the two sets of column formwork are reinforced with steel pipe hoops, and scissor jacks are used to support the expansion joint between the two sets of column formwork. The position and number of scissor jacks can be flexibly adjusted according to the actual situation. This solves the problem of installation limitations without increasing costs or delaying the construction period, and improves construction efficiency. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of a preferred embodiment of the present utility model;
[0013] Figure 2 This is a schematic diagram of the column mold in a preferred embodiment of the present invention;
[0014] Figure 3 This is a top view of a preferred embodiment of the present invention.
[0015] In the diagram: 1. Scissor jack; 2. Column formwork; 3. Vertical square timber; 4. Steel pipe outer hoop; 5. Tie bolt; 6. Bolt hole; 7. Concrete. Detailed Implementation
[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.
[0017] Example 1, as Figures 1 to 3 As shown, the double-sided column formwork reinforcement structure for narrow expansion joints includes two sets of column formwork 2. Several vertical square timbers 3 are installed on the front, rear, and outer sides of the outer templates of the two sets of column formwork 2. The outer sides of the two sets of column formwork 2 are reinforced with steel pipe hoops 4, and the steel pipe hoops 4 abut against the vertical square timbers 3. Scissor jacks 1 are symmetrically installed vertically at the expansion joint between the two sets of column formwork 2. The two ends of the scissor jacks 1 abut against the inner templates of the two sets of column formwork 2. By adjusting the scissor jacks, the position of both sides of the expansion joint can be supported, and the displacement of the inner templates of the column formwork 2 can be precisely controlled to ensure installation accuracy and force balance.
[0018] In this embodiment, the steel pipe outer hoop 4 adopts a layered staggered arrangement structure, with two sets of steel pipe outer hoop 4 symmetrically arranged in each layer. The steel pipe outer hoop 4 of adjacent layers are arranged alternately in the front-back direction and the left-right direction, and the rigid connection between layers is achieved by tie bolts 5. This design can effectively enhance the overall stability and load-bearing capacity of the structure.
[0019] In this embodiment, each set of steel pipe outer clamps 4 consists of three steel pipes, with a gap between adjacent steel pipes for the tie bolts 5 to pass through.
[0020] In this embodiment, the gap between adjacent steel pipes is 10-20mm.
[0021] In this embodiment, the outer diameter of the steel pipe is 48 mm and the wall thickness is 3 mm.
[0022] In this embodiment, the two sets of column molds 2 have bolt holes 6 that allow tie bolts 5 to pass through from front to back along the vertical direction.
[0023] Before construction, bolt holes 6 are first opened on the column formwork, and vertical square timber 3 is installed on the front, back and outer templates of the column formwork. Then, steel pipe hoops 4 and tie bolts 5 are used for reinforcement. Scissor jacks 1 are symmetrically arranged on the inner side of the two sets of column formwork 2. The scissor jacks are used for support to control the displacement of the two sets of column formwork 2 within the design range. After reinforcement is completed, concrete 7 can be poured.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A narrow expansion joint bilateral column formwork reinforcement structure, characterized in that, The outer side of the front, rear and outer side of the formwork of the two sets of column forms (2) is respectively provided with a plurality of vertical square timbers (3), the outer side of the two sets of column forms (2) is reinforced by a steel pipe outer hoop (4), and the steel pipe outer hoop (4) abuts against the vertical square timber (3), a shearing type jack (1) is symmetrically arranged along the vertical direction at the expansion joint between the two sets of column forms (2), and the two ends of the shearing type jack (1) respectively abut against the inner side formwork of the two sets of column forms (2).
2. The narrow telescopic joint double-sided column module reinforcement structure according to claim 1, characterized in that, The steel pipe outer hoop (4) adopts a layered staggered arrangement structure, two sets of steel pipe outer hoops (4) are symmetrically arranged in each layer, the adjacent layer steel pipe outer hoops (4) are alternately arranged in the front-rear direction and the left-right direction, and rigid connection between layers is realized by the tensioning bolt (5).
3. The narrow telescopic joint double-sided column module reinforcement structure according to claim 2, characterized in that, Each set of steel pipe outer hoops (4) is composed of three steel pipes, and a gap is left between the adjacent steel pipes for the tensioning bolt (5) to pass through.
4. The narrow telescopic joint double-sided column module reinforcement structure according to claim 3, characterized in that, The gap between the adjacent steel pipes is 10-20mm.
5. The narrow telescopic joint double-sided column module reinforcement structure according to claim 3, characterized in that, The outer diameter of the steel pipe is 48mm, and the wall thickness is 3mm.
6. The narrow telescopic joint double-sided column module reinforcement structure according to claim 2, characterized in that, The two sets of column forms (2) are vertically and longitudinally penetrated by bolt holes (6) for the tensioning bolt (5) to pass through.