Novel bracket structure without embedded steel bars in shield tunnel
By embedding the nuts and high-strength bolts in the shield tunnel, and combining with welding multiple steel plates to form the beef legs, the damage and durability problems in the planting beef legs are solved, and the damage-free and convenient construction and high quality are achieved. connect.
Patent Information
- Application Number
- CN202421050221.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-15
AI Technical Summary
The internal tendon planting beef leg process in the shield tunnel has problems such as durability problems and cumbersome construction caused by drilling damage to the pipe sheet and oxidation of the tendon glue.
The non-plant rib-type corundle leg structure is adopted, and the fixing plate is connected by embedding the nuts and high-strength bolts in the pipe liner to avoid drilling damage, and the corundle leg is formed by welding multiple steel plates to ensure construction convenience and durability.
The ox leg structure with damage-free construction and durability is realized, which improves the connection quality and construction convenience, and avoids insufficient durability and construction complexity in the reinforcement process.
Smart Images
Figure CN222276672U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tunnel engineering, in particular to a novel non-reinforcement type bracket structure inside a shield tunnel. Background Art
[0002] Due to the advantages of high safety and good construction conditions of shield tunnel construction method, the shield method is widely used in the construction of traffic tunnels. In order to make full use of the lower spatial structure of the shield tunnel and to meet the fire protection and evacuation requirements of the tunnel, it is necessary to set up a lane plate and a flue plate inside the shield tunnel. The specific method is to embed reinforcement and cast concrete corbels on the segment lining. After the strength of the corbels meets the requirements, the lane plate and the flue plate are placed on the embedded reinforcement corbels. The usual manufacturing process of embedded reinforcement corbels is: ① Positioning according to the position of the corbels; ② Drilling holes on the segment structure after positioning; ③ Injecting embedded reinforcement glue into the hole after drilling; ④ Inserting the steel bars into the bottom of the hole, and pouring the concrete corbels after the embedded reinforcement glue is solidified.
[0003] Although the use of embedded reinforcement corbels in shield tunnels has been applied to a certain extent, it still has many disadvantages: (1) The drilling of embedded reinforcement holes causes irreversible damage to the segment lining. At the same time, it is difficult to avoid the location of the steel bars inside the segment, which can easily damage the steel bars; (2) The embedded reinforcement glue is easily oxidized after contact with air, and its durability cannot be effectively guaranteed; (3) The processes of tying steel bars and pouring concrete for the corbels are cumbersome and require construction time and space for other processes, making construction inconvenient.
[0004] Therefore, seeking a new type of corbel that does not damage the segment structure, has reliable corbel durability, and is easy to construct has become an urgent problem to be solved. Utility Model Content
[0005] The technical problem to be solved by the utility model is: in view of the above existing problems, a new type of non-reinforced corbel structure inside a shield tunnel is provided.
[0006] The technical solution adopted by the utility model is: a new type of non-reinforced bracket structure inside a shield tunnel, characterized in that it includes:
[0007] A first connecting member is pre-buried in the segment lining of the shield tunnel;
[0008] a fixing plate, on which the second connecting member is provided, and the second connecting member can cooperate with the first connecting member to achieve connection, so that the fixing plate is fixedly connected to the inner wall of the segment lining;
[0009] The corbel is connected to the fixing plate.
[0010] Through the above technical means, the first connecting member is embedded in the segment lining, and the first connecting member and the second connecting member are connected in cooperation, and the fixing plate is fixed to the inner wall of the segment lining through the second connecting member. By embedding the first connecting member, damage to the segment lining caused by drilling construction is avoided, and compared with the process of embedding reinforcement and casting corbels, the fixing plate is fixed by means of the connection and cooperation between the first connecting member and the second connecting member, making the construction more convenient.
[0011] In some embodiments, the first connecting member is a nut, which is pre-buried in the segment lining, and the second connecting member is a high-strength bolt. The fixing plate is provided with a plurality of pre-drilled holes, and the high-strength bolt can pass through the pre-drilled holes and cooperate with the corresponding nut to achieve connection.
[0012] Through the above technical means, nuts are easily embedded in the segment lining, and the connection quality between the fixing plate and the segment lining can be ensured to be reliable by relying on the connection strength between the high-strength bolts and the nuts.
[0013] In some embodiments, the corbel is made by welding multiple steel plates.
[0014] In some embodiments, the fixing plate is made of steel plate.
[0015] In some embodiments, the surfaces of the first connecting member, the second connecting member, the fixing plate, and the corbel are all coated with anti-corrosion and fire-retardant coatings.
[0016] The beneficial effects of the utility model are:
[0017] 1. By pre-embedding the nuts in the segment lining, damage to the segment structure caused by drilling construction is avoided. The steel fixing plate is fixed to the segment lining by the connection between the nuts and high-strength bolts, which not only ensures the reliable connection quality but also ensures the convenience of connection construction.
[0018] 2. The corbel is formed by on-site welding of multiple steel plates, and the structure can be flexibly assembled according to engineering requirements. The corbel is firmly welded to the fixed plate. Compared with the embedded rebar corbel, where the durability of the embedded rebar glue cannot be guaranteed, welding can ensure the strength and stability of the connection part, and the construction is convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the connection structure of this application.
[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the fixing plate in this application.
[0021] Figure 3 It is a schematic diagram of the planar structure of the fixed plate in this application.
[0022] Figure 4 It is a schematic diagram of the connection between the nut and the high-strength bolt in this application.
[0023] Description of reference numerals:
[0024] 1. Corbel; 2. Fixing plate; 3. High-strength bolts; 4. Nuts; 5. Segment lining; 6. Pre-drilled holes. DETAILED DESCRIPTION
[0025] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below in conjunction with specific embodiments.
[0026] Combination Figures 1 to 4 As shown, this embodiment is a new type of non-reinforced corbel structure inside a shield tunnel, including a first connecting member, a second connecting member, a fixed plate 2, and a corbel 1. The first connecting member and the second connecting member can cooperate to achieve mutual connection. The first connecting member is pre-buried in the segment lining 5 of the shield tunnel, and the second connecting member is arranged on the fixed plate 2. The fixed plate 2 is fixedly connected to the inner wall of the segment lining 5 through the second connecting member, and the corbel 1 is connected to the fixed plate 2.
[0027] like Figure 2 As shown, in this embodiment, the first connecting member and the second connecting member are connected by bolts, the first connecting member uses a nut 4, and the second connecting member uses a high-strength bolt 3. The nut 4 is pre-buried in the segment lining 5 to avoid structural damage to the segment lining 5 caused by drilling construction. Figure 2 and Figure 3 As shown, the fixing plate 2 is provided with a pre-drilled hole 6. Figure 4 As shown, the high-strength bolts 3 are passed through the pre-drilled holes 6 of the fixing plate 2 and connected with the nuts 4 , so that the fixing plate 2 can be fixed on the inner wall of the segment lining 5 .
[0028] In this embodiment, the fixing plate 2 is made of steel plate, the corbel 1 is made of multiple steel plates welded on site, and the fixing plate 2 and the corbel 1 are connected by welding. Furthermore, the surfaces of the nuts 4, high-strength bolts 3, the fixing plate 2 and the corbel 1 are all coated with anti-corrosion and fire-retardant coatings.
[0029] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A new type of non-reinforced corbel structure inside a shield tunnel, characterized in that: include: A first connecting piece is pre-buried in the segment lining (5) of the shield tunnel; A fixing plate (2) having a second connecting piece provided thereon, the second connecting piece being capable of cooperating with the first connecting piece to achieve connection, so that the fixing plate (2) is fixedly connected to the inner wall of the segment lining (5); The corbel (1) is connected to the fixing plate (2).
2. According to claim 1, a novel non-reinforced corbel structure inside a shield tunnel is characterized by: The first connecting member is a nut (4) which is pre-buried in the segment lining (5); the second connecting member is a high-strength bolt (3); a plurality of pre-drilled holes (6) are provided on the fixing plate (2); the high-strength bolt (3) can pass through the pre-drilled holes (6) and cooperate with the corresponding nut (4) to achieve connection.
3. According to claim 1, a novel non-reinforced corbel structure inside a shield tunnel is characterized by: The bracket (1) is made by welding a plurality of steel plates.
4. According to claim 1, a novel non-reinforced corbel structure inside a shield tunnel is characterized by: The fixing plate (2) is made of steel plate.
5. According to claim 1, a novel non-reinforced corbel structure inside a shield tunnel is characterized by: The surfaces of the first connecting piece, the second connecting piece, the fixing plate (2) and the corbel (1) are all coated with anti-corrosion and fire-retardant coatings.