A type of arched template for the misaligned end of a tunnel invert arch
By using steel-reinforced sheet panels to construct the formwork, the problems of high waste of wooden formwork and poor applicability of fixed steel formwork were solved, thus achieving durability and ease of construction of the formwork and ensuring high-quality finished concrete at the invert arch end.
Patent Information
- Application Number
- CN202520341097.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing wooden end formwork suffers from high wear and tear, requires numerous reinforcement supports, and has poor overall integrity. Fixed steel formwork structures are also limited in applicability, resulting in poor appearance quality of the concrete at the invert arch end and inconvenience in construction.
The template is made of multiple steel-reinforced sheet panels, including vertical, curved, and arc-shaped panels, which are connected by welding. The curvature can be adjusted according to the characteristics of the project, and the traction rings facilitate disassembly and assembly. C-shaped rings are used to connect the hoisting equipment.
It improves the durability of the template, prevents grout leakage, enhances its applicability and ease of construction, and ensures the quality of the finished product.
Smart Images
Figure CN224943743U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel construction technology, specifically to a staggered arc-shaped template for the end of a tunnel arch. Background Technology
[0002] The invert arch, the foundation of a tunnel, provides support against the pressure of the superstructure, transfers loads to the underground, and resists the reaction forces of the strata. During invert arch construction, curved formwork is required, typically using assembled wooden structures or standardized steel molds. Therefore, existing formwork has the following shortcomings:
[0003] 1. Wooden end formwork has high formwork wear, requires more reinforcement and support, has poor overall integrity, and is prone to grout leakage, resulting in poor appearance quality of the concrete at the invert arch end;
[0004] 2. The fixed steel formwork structure cannot be adjusted according to the required curvature of the invert arch, and is inconvenient to move, disassemble, and assemble, resulting in inconvenient construction and poor applicability. Utility Model Content
[0005] I. Technical problems to be solved
[0006] The technical problem this invention aims to solve is that the wood end film suffers from high loss, is prone to leakage leading to poor finished product quality, and the fixed steel mold structure has poor applicability.
[0007] II. Technical Solution
[0008] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a misaligned arc-shaped template for the end of a tunnel invert arch, comprising templates facing each other on the left and right;
[0009] The template is composed of multiple sheet-shaped plates made of steel bars, including vertical plates. The lower end of the vertical plates is a downward curved arc structure. An arch can be formed between two vertical plates. The lower end of the vertical plates is connected to an arc plate. The other end of the arc plate is provided with a vertical arc plate.
[0010] A traction ring is connected to the front side of the upper end of the vertical plate.
[0011] As an improvement, the front side of the vertical plate is provided with a support plate perpendicular to it, and the support plate includes multiple vertical support plates and a horizontal support plate located at the upper end of the vertical support plates.
[0012] As an improvement, the front side of the vertical plate is provided with a plurality of support rods that are tangent to the arc-shaped plate.
[0013] As an improvement, multiple L-shaped support plates perpendicular to the arc-shaped plate are uniformly provided at the connection between the arc-shaped plate and the arc-shaped plate II.
[0014] As an improvement, the various components of the template are connected by welding.
[0015] As an improvement, a C-shaped ring is inserted into the traction ring, and a through hole is provided between the two ends of the C-shaped ring for connecting lifting equipment.
[0016] III. Beneficial Effects
[0017] The advantages of this utility model compared with the prior art are as follows:
[0018] 1. This utility model uses multiple steel-reinforced sheet plates to form a template, which is more durable, can prevent grout leakage, and results in better quality finished products;
[0019] 2. The vertical piece, arc-shaped piece, and arc-shaped piece II of this utility model can be cut and welded according to the engineering characteristics, making it more applicable. The template can be driven by the C-shaped ring inserted into the traction ring, making it easier to assemble and disassemble. Attached Figure Description
[0020] Figure 1 This is a structural schematic diagram of an arc-shaped template for the misaligned end of a tunnel arch, according to this utility model.
[0021] Figure 2 This is a schematic diagram of the structure of a staggered arc-shaped template for the end of a tunnel invert arch, according to this utility model. Figure 2 .
[0022] Figure 3 This is a schematic diagram of the structure of a staggered arc-shaped template for the end of a tunnel invert arch, according to this utility model. Figure 3 .
[0023] Figure 4 This is the front view of a tunnel arch end misaligned arc template according to this utility model.
[0024] As shown in the figure: 1. Template; 2. Vertical piece; 3. Arc-shaped piece; 4. Arc-shaped piece two; 5. Traction ring; 6. Support piece; 7. Support rod; 8. Support piece two; 9. C-shaped ring; 10. Through hole. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0026] Example 1
[0027] As attached Figure 1-4As shown, a staggered arc-shaped template for the end of a tunnel invert arch includes two opposing templates 1. The template 1 is composed of multiple steel plate panels, including vertical plates 2. The lower end of each vertical plate 2 has a downward-curving arc structure, and an arch can be formed between two vertical plates 2. An arc-shaped plate 3 is connected to the lower end of each vertical plate 2. A vertical arc-shaped plate 4 is provided on the lower side of the other end of the arc-shaped plate 3, so that the template 1 forms a complete whole. This allows concrete to be poured between the two templates after they are installed on the left and right sides, resulting in a good sealing effect, reduced grout leakage, and better appearance quality.
[0028] The various components of the template 1 are connected by welding. According to the engineering characteristics, the lower end of the vertical piece 2 can be cut to a certain extent first, and then the arc piece 3 and the arc piece 4 can be welded together at one time, so that the curvature can be adjusted and the applicability is wider.
[0029] Furthermore, the front side of the vertical plate 2 is provided with a support plate 6 perpendicular to it. The support plate 6 includes multiple vertical support plates and a horizontal support plate located at the upper end of the vertical support plates. Multiple support rods 7 tangent to the arc plate 3 are evenly provided on the front side of the vertical plate 2. Multiple L-shaped support plates 8 perpendicular to it are evenly provided at the connection between the arc plate 3 and the arc plate 4. The support plates, support rods 7 and support plates 8 play a supporting role for the template 1, so that it maintains a stable shape.
[0030] Example 2
[0031] As attached Figure 1 As shown, in order to facilitate the assembly and disassembly of the template 1, a traction ring 5 is connected to the front side of the upper end of the vertical piece 2. A C-shaped ring 9 is inserted into the traction ring 5. A through hole 10 is provided between the two ends of the C-shaped ring 9 for connecting hoisting equipment. A hook can be inserted into the through hole 10 to adjust the position of the template 1 for easy assembly and disassembly.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A staggered arc-shaped template for the end of a tunnel invert arch, comprising left and right opposing templates (1), characterized in that: The template (1) is composed of multiple sheet plates made of steel bars, including vertical plates (2). The lower end of the vertical plate (2) is a downward curved structure. An arch can be formed between two vertical plates (2). The lower end of the vertical plate (2) is connected to an arc plate (3). The other end of the arc plate (3) is provided with a vertical arc plate (4). The upper front side of the vertical piece (2) is connected to a traction ring (5).
2. The tunnel invert arch end misaligned arc-shaped template according to claim 1, characterized in that: The vertical piece (2) has a support piece (6) perpendicular to it on its front side. The support piece (6) includes multiple vertical support pieces and a horizontal support piece located at the upper end of the vertical support pieces.
3. The tunnel invert arch end misaligned arc-shaped template according to claim 2, characterized in that: The vertical piece (2) is provided with a plurality of support rods (7) that are tangent to the arc-shaped piece (3) on the front side.
4. The tunnel invert arch end misaligned arc-shaped template according to claim 1, characterized in that: At the connection between the arc-shaped piece (3) and the arc-shaped piece (4), a plurality of L-shaped support pieces (8) perpendicular to it are uniformly provided.
5. The tunnel invert arch end misaligned arc-shaped template according to claim 1, characterized in that: The various components of the template (1) are connected by welding.
6. The tunnel invert arch end misaligned arc-shaped template according to claim 1, characterized in that: A C-shaped ring (9) is inserted into the traction ring (5), and a through hole (10) is provided between the two ends of the C-shaped ring (9) for connecting the hoisting equipment.