Reinforcing component for improving strength of prestressed grouting material in pipe
By introducing flow-limiting valve plates and guide groove structures into the reinforcing components, the grouting speed is controlled, solving the problem of uneven distribution of grouting material during tunnel construction, improving structural strength and service life, reducing construction costs and self-weight, and achieving efficient and reliable tunnel reinforcement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-04-21
AI Technical Summary
Existing reinforcement components suffer from uncontrollable grout delivery speed during tunnel construction, leading to void formation, which affects structural strength and service life. Furthermore, traditional reinforcement methods are inefficient, costly, and heavy, making it difficult to meet safety and durability requirements.
A reinforcement component is designed, which adopts a reinforcement rod main structure and a flow-limiting valve plate structure. By using evenly distributed flow-limiting valve plates and guide grooves, the grouting speed is controlled to ensure the grouting density and improve the structural strength and load-bearing capacity.
This method achieves uniform distribution of grouting material, improves the overall structural strength and service life of reinforced components, reduces construction costs and self-weight, and enhances the reliability and durability of tunnel reinforcement.
Smart Images
Figure CN224149573U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tunnel construction structure reinforcement, and in particular to a reinforcement component that increases the strength of prestressed grouting material inside the pipe. Background Technology
[0002] With the rapid development of urban construction, there are more and more tunnels, bridges and other structures. The operational safety of these facilities is a major issue. At the same time, due to natural factors, service life, local overloading, and improper excavation of foundation pits in surrounding projects, the structures of tunnels, bridges and other structures are prone to deformation, misalignment, concrete peeling and cracking. These can all pose hidden dangers to the structures. If they are further aggravated, they will have a huge impact on normal operation. Curbing the development of these hidden dangers and ensuring safety is a very important and urgent issue.
[0003] Traditional steel plate reinforcement methods involve using heavy machinery to install thick steel plates in sections on the structures of tunnels and bridges that require reinforcement, followed by open-flame welding. This process is extremely difficult in terms of construction and corrosion prevention, and it also significantly increases the self-weight of the structure. In particular, chemical anchors need to be installed during reinforcement, and the adhesive needs to cure for 24 hours before the next step can be carried out. Ordinary expansion anchors cannot be used because they would damage the concrete structure. Therefore, the existing methods have low construction efficiency, long construction cycles, large loads on the reinforced structure, require open-flame welding, use large equipment, are relatively expensive, and are difficult to prevent corrosion.
[0004] Existing reinforcement components have limited load-bearing strength during use. Due to their large size, they are costly to produce and their durability during use is difficult to guarantee, resulting in the need for regular maintenance and relatively high maintenance costs.
[0005] To address the problems in existing technologies, a reinforcement component was previously designed. Its main body consists of three sets of pipe structures with a hollow center. Grouting is performed inside the hollow center to ensure overall strength. However, because the main body is an arc-shaped structure and the three sets of arc-shaped structures are spliced together to form a tunnel reinforcement, the speed at which the grout is delivered into the pipe cannot be controlled during internal grouting. As the grout flows from the top down, it creates undetectable voids inside the hollow pipe, resulting in internal hollow structures that affect the stress strength of the reinforcement component. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a reinforcement component that increases the strength of the prestressed grouting material inside the pipe, which can ensure that the space inside the pipe reinforcement component can be grouted evenly, so that the internal grouting density is better, the overall structural strength is higher, the bearing strength is more reliable in later use, and the tunnel can be reinforced more reliably in later use.
[0007] To achieve the above objectives, this utility model provides a reinforcing component for increasing the strength of prestressed grouting material inside pipes, including a reinforcing rod main body structure inserted into the pipe-type reinforcing component. The reinforcing rod main body structure has uniformly distributed flow-limiting valve plate structures along its axial direction. The front of the flow-limiting valve plate structure has uniformly distributed combination connection mounting holes. The upper and lower sides of the flow-limiting valve plate structure have first grouting delivery guide grooves with openings to the outside, and the left and right sides of the flow-limiting valve plate structure have second grouting delivery guide grooves with openings to the outside. The outer edge of the flow-limiting valve plate structure has an arc-shaped transition safety surface.
[0008] Furthermore, the second grouting delivery guide groove is located at the center position in the width direction of the flow-limiting valve plate structure.
[0009] Preferably, two adjacent first grouting delivery guide grooves are connected together by a transitional arc structure.
[0010] Preferably, the main structure of the reinforcing rod is made of reinforcing threaded steel.
[0011] Furthermore, the flow-limiting valve plate structure is connected to the main body structure of the reinforcing rod by welding, and welding structures are provided on both sides of the connection position between the flow-limiting valve plate structure and the main body structure of the reinforcing rod.
[0012] Preferably, the inner sides of both the second grouting conveying guide groove and the first grouting conveying guide groove are arc-shaped structures.
[0013] In summary, compared with the prior art, the reinforcing component of this utility model for increasing the strength of prestressed grouting material inside the pipe has at least the following beneficial effects:
[0014] 1. The overall structure adopts a brand-new design. When in use, it can be used in conjunction with tubular reinforcement components. It is inserted into the interior of the tubular reinforcement components. When the tubular reinforcement components are bent later, it can be bent at the same time, so that it is formed into a regular distribution inside the tubular reinforcement components.
[0015] 2. This utility model can improve the overall structural strength of pipe-type reinforcement components. During the later grouting process, it can also limit the flow rate of internal grouting, allowing it to be delivered slowly. This ensures that the space inside the pipe-type reinforcement component can be grouted evenly, resulting in better internal grout density, higher overall structural strength, and more reliable load-bearing capacity during later use. It can also provide more reliable reinforcement for tunnels during later use. Attached Figure Description
[0016] To more clearly illustrate the technical solution of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a front view of the reinforcing member for increasing the strength of prestressed grouting material inside the pipe according to the present invention;
[0018] Figure 2 This is a side view of the reinforcing member for increasing the strength of prestressed grouting material inside the pipe according to the present invention;
[0019] Figure 3 This is a cross-sectional schematic diagram of the reinforcing component of this utility model when it is used in conjunction with a pipe-type reinforcing component;
[0020] Figure 4 A schematic diagram of the cross-section of a pipe reinforcement component;
[0021] Figure 5 This is a perspective view of the reinforcing component of this utility model combined with a pipe-type reinforcing component after bending.
[0022] In the figure: 1. Main structure of the reinforcing rod, 2. Flow limiting valve plate structure, 3. Combined connection mounting hole, 4. First grouting conveying guide groove, 5. Second grouting conveying guide groove. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] See below. Figures 1-5 This invention provides a detailed description of the reinforcing component for increasing the strength of prestressed grouting material inside pipes.
[0025] like Figure 1-5 As shown, the reinforcing component for increasing the strength of prestressed grout in pipes according to this utility model includes a reinforcing rod main body structure 1 that penetrates into the pipe-type reinforcing component. The reinforcing rod main body structure 1 is an integral support structure. The reinforcing rod main body structure 1 has evenly distributed flow-limiting valve plate structures 2 along its axial direction. These structures limit the grout flow during use, preventing excessively fast grouting speeds that could easily cause voids inside the pipe-type reinforcing component. The front side of the flow-limiting valve plate structure 2 has evenly distributed combination connection mounting holes 3. These holes allow for combination with the reinforcing rod main body structure 1, with multiple holes configured for different positional selection and fitting. Additional holes can also be used as intermediate grout delivery holes.
[0026] The flow-limiting valve plate structure 2 has first grouting delivery guide grooves 4 with outward openings on its upper and lower sides, and second grouting delivery guide grooves 5 with outward openings on its left and right sides, which can ensure the uniformity of grouting in the surrounding area. The outer edge of the flow-limiting valve plate structure 2 has an arc-shaped transition safety surface, which ensures better relative smoothness of the outer position during grouting, a larger contact area during subsequent grouting and molding, better overall molding firmness, and more reliable overall structural strength.
[0027] As a preferred option, the main structure 1 of the reinforcing rod is made of reinforced threaded steel, which makes the structure stronger, lowers the production cost, and makes it easier to perform bending and fitting operations later, and easier to deform.
[0028] The flow-limiting valve plate structure 2 is connected to the main body structure 1 of the reinforcing rod by welding. Welded structures are provided on both sides of the connection position between the flow-limiting valve plate structure 2 and the main body structure 1 of the reinforcing rod, which makes the combined strength of the connection position better and the overall structural strength can be further improved. Their connection can also be made by means of threads or other methods.
[0029] Preferably, the second grouting conveying guide groove 5 is located at the center of the width direction of the flow limiting valve plate structure 2, which makes the grouting in the width direction more stable and the overall structural strength after grouting is higher.
[0030] The two adjacent first grouting conveying guide channels 4 are connected by a transitional arc structure, which ensures better smoothness during internal grouting and avoids the possibility of sharp corners on the outer side scratching the inner wall. The inner sides of both the second grouting conveying guide channel 5 and the first grouting conveying guide channel 4 are arc-shaped mating surfaces, which increases the mating area for grouting, makes production and processing more convenient, and makes it easier to cut and shape, thus ensuring higher production efficiency.
[0031] This utility model's reinforcing component for increasing the strength of prestressed grouting material inside pipes adopts a completely new structural design. It can be used in conjunction with pipe-type reinforcing components, being inserted into their interiors. During subsequent bending of the pipe-type reinforcing components, it can be bent simultaneously, resulting in a regular distribution of the grout within the pipe-type reinforcing component. This not only improves the overall structural strength of the pipe-type reinforcing component but also limits the flow rate of grouting during subsequent grouting, ensuring slow and uniform grouting within the pipe space. This results in better internal grout density, higher overall structural strength, and more reliable load-bearing capacity during later use. It provides more reliable reinforcement of tunnels, effectively improving safety and durability during use.
[0032] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any transformations or substitutions that can be understood by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of this utility model.
Claims
1. A reinforcing member for increasing the strength of an in-pipe prestressed grout, characterized by, The reinforcement rod main body structure (1) is inserted into the pipe reinforcement component. The reinforcement rod main body structure (1) is provided with uniformly distributed flow limiting valve plate structure (2) in the axial direction. The front of the flow limiting valve plate structure (2) is provided with uniformly distributed combination connection mounting holes (3). The flow-limiting valve plate structure (2) has a first grouting conveying guide groove (4) with an opening to the outside on the upper and lower sides, and a second grouting conveying guide groove (5) with an opening to the outside on the left and right sides. The flow-limiting valve plate structure (2) has an arc-shaped transition safety surface at the outer edge.
2. The reinforcement member for increasing the strength of in-pipe pre-stressed grout according to claim 1, wherein The second grouting conveying guide groove (5) is located at the center of the width direction of the flow limiting valve plate structure (2).
3. The reinforcement member for increasing the strength of in-pipe pre-stressed grout according to claim 1, wherein The two adjacent first grouting conveying guide grooves (4) are connected together by a transitional arc structure.
4. The reinforcement member for increasing the strength of in-pipe pre-stressed grout according to claim 1, wherein The main structure (1) of the reinforcing rod is made of reinforcing threaded steel.
5. The reinforcement member for increasing the strength of in-pipe pre-stressed grout according to claim 1 or 4, wherein The flow limiting valve plate structure (2) is connected to the main body structure of the reinforcing rod (1) by welding. Welding structures are provided on both sides of the connection position between the flow limiting valve plate structure (2) and the main body structure of the reinforcing rod (1).
6. The reinforcement member for increasing the strength of in-pipe pre-stressed grout according to claim 1, wherein The inner sides of the second grouting conveying guide groove (5) and the first grouting conveying guide groove (4) are both arc-shaped structures.