Local fiber concrete shield tunnel segment structure

Abstract

The utility model relates to the field of underground engineering construction, in particular to a local fiber concrete shield tunnel duct piece structure which comprises standard duct pieces, a plurality of standard duct pieces are mutually spliced to form an annular shield tunnel, and a rotary connecting assembly is installed between every two adjacent standard duct pieces. The exterior of the mounting block and the interior of the mounting groove are both poured by the fiber concrete to form a protective layer, and the fiber concrete has higher toughness and is not easy to crack compared with common concrete, so that when the mounting block extends into the mounting groove, the standard duct piece cannot be cracked due to rubbing between the mounting block and the inner wall of the mounting groove, and the service life of the standard duct piece is prolonged. And the service life of the standard duct piece is longer, the integrity is higher, and the construction efficiency of the underground tunnel is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of underground engineering construction, in particular to a local fiber concrete shield tunnel segment structure. Background Art

[0002] With the improvement of shield technology and the development of underground transportation construction, more and more regions are actively carrying out tunnel construction. At present, the vast majority of tunnels use shield machines to assemble the segments. During the segment assembly process, the segments are prone to collisions, causing corner collapse or local bursting due to pressure, which in turn causes damage to the segment structure. At present, during the installation process of conventional shield tunnel segment structures, it is very easy to cause damage to the edges and corners of the shield tunnel segments, and this damage will continuously affect the entire shield tunnel. Therefore, the existing technology urgently needs a shield tunnel segment that can avoid damage to the edges and corners during the installation process to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a local fiber concrete shield tunnel segment structure to solve the problems in the prior art.

[0004] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0005] A local fiber concrete shield tunnel segment structure comprises standard segments. A plurality of the standard segments are spliced ​​together to form an annular shield tunnel. Rotating connection components are installed between adjacent standard segments.

[0006] Based on a preferred solution provided by a local fiber concrete shield tunnel segment structure, the rotating connection assembly includes a mounting block fixedly installed on the side wall of one end of the standard segment, and the other end of the standard segment is provided with a mounting groove for accommodating the mounting block. A hinged rod is rotatably connected in the mounting block, and the hinged rod passes through the two standard segments so that the two standard segments are hinged to each other.

[0007] Based on a preferred solution provided by a local fiber concrete shield tunnel segment structure, the end of the hinged rod is sleeved with a fixing screw sleeve, and the side walls on both sides of the standard segment are provided with accommodating grooves for accommodating the hinged rod head and the fixing screw sleeve.

[0008] Based on a preferred solution provided by a local fiber concrete shield tunnel segment structure, installation cavities are opened at the tops of both ends of the standard segments, and installation through holes are opened on the side walls of the installation cavities. The installation through holes in adjacent standard segments are interconnected, and bolts are fixedly installed in the interconnected installation through holes.

[0009] Based on a preferred solution provided by a local fiber concrete shield tunnel segment structure, an anti-collision arc plate is fixedly installed on the side wall of one side of the standard segment, and an arc-shaped groove for accommodating the anti-collision arc plate is opened on the side wall of the other side of the standard segment.

[0010] Based on a preferred solution provided by a local fiber concrete shield tunnel segment structure, multiple annular shield tunnels are spliced ​​together to form a shield tunnel as a whole, and the anti-collision arc plates on the annular shield tunnels extend into the arc-shaped sinks in the adjacent annular shield tunnels.

[0011] Compared with the prior art, the present invention has the following beneficial effects: in the present invention, the outside of the mounting block and the inside of the mounting groove are both cast with fiber concrete to form a protective layer. Since fiber concrete has stronger toughness than ordinary concrete and is not easy to break, when the mounting block is extended into the mounting groove, even if it is scratched against the inner wall of the mounting groove, it will not cause the standard pipe segment to break, thereby extending the service life of the standard pipe segment and increasing its integrity, greatly improving the construction efficiency of underground tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] Figure 2 Schematic diagram of the hinge connection of two standard pipe segments in the present invention;

[0015] Figure 3 This is a schematic diagram of the standard pipe segment in the present invention.

[0016] In the figure: 1. Standard segment; 11. Mounting slot; 12. Accommodating slot; 13. Mounting cavity; 14. Anti-collision arc plate; 15. Arc-shaped sink trough; 2. Annular shield tunnel; 3. Rotating connection assembly; 31. Mounting block; 32. Articulated rod; 33. Fixing screw sleeve. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] The following first describes the concepts involved in this application with reference to the accompanying drawings. It should be noted that the following description of each concept is intended only to make the content of this application easier to understand and does not limit the scope of protection of this application. At the same time, the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The following detailed description of this application will be made with reference to the accompanying drawings and in conjunction with the embodiments.

[0019] Example

[0020] like Figures 1 to 3 As shown, the utility model provides a local fiber concrete shield tunnel segment structure, including a standard segment 1, a plurality of standard segments 1 are spliced ​​together to form an annular shield tunnel 2, and a rotating connection assembly 3 is installed between adjacent standard segments 1.

[0021] As a preferred solution for the segment structure of a local fiber concrete shield tunnel, the rotating connection assembly 3 includes a mounting block 31 fixedly mounted on the side wall of one end of the standard segment 1, and a mounting groove 11 for accommodating the mounting block 31 is provided at the other end of the standard segment 1. A hinged rod 32 is rotatably connected in the mounting block 31, and the hinged rod 32 passes through the two standard segments 1 so that the two standard segments 1 are hinged to each other.

[0022] With the advancement of shield tunneling technology and the development of underground transportation, tunnel construction is actively underway in more and more regions. Currently, the vast majority of tunnels utilize shield machines (TBMs) to assemble segments. During this process, adjacent segments can easily collide, causing angle collapse or localized cracking due to pressure. This damage can cause damage to the segment structure, which can have a lasting impact on the entire shield tunnel.

[0023] In this embodiment, multiple standard segments 1 are hinged to each other by rotating the connecting assembly 3 to form an annular shield tunnel 2. Specifically, in the process of forming the annular shield tunnel 2, multiple standard segments 1 are spliced ​​by connecting them end to end, and hinge rods 32 are installed at the splicing points of the standard segments 1, so that two adjacent standard segments 1 are hinged to each other. During the hinge process, only the mounting block 31 is in contact with the mounting groove 11, so as to avoid mutual collision between adjacent standard segments 1 during installation, thereby causing the corners of the standard segments 1 to be damaged. Furthermore, when the shield machine supports two groups of hinged standard segments 1, in order to avoid damage to the fitting surfaces of the two standard segments 1 due to extrusion, a layer of fiber concrete can be evenly poured on the outer wall of the standard segment 1 to form a protective layer, thereby extending the tolerance of the standard segment 1.

[0024] Furthermore, the outside of the mounting block 31 and the inside of the mounting groove 11 in this embodiment are both cast with fiber concrete to form a protective layer. Since fiber concrete has stronger toughness than ordinary concrete and is not easy to break, when the mounting block 31 is extended into the mounting groove 11, even if it is scratched against the inner wall of the mounting groove 11, it will not cause the standard pipe segment 1 to break, thereby extending the service life of the standard pipe segment 1 and increasing its integrity, greatly improving the construction efficiency of underground tunnels.

[0025] As a preferred solution for the local fiber concrete shield tunnel segment structure, the end of the hinged rod 32 is sleeved with a fixed screw sleeve 33, and the side walls on both sides of the standard segment 1 are provided with a receiving groove 12 for accommodating the head of the hinged rod 32 and the fixed screw sleeve 33.

[0026] As a preferred solution for the segment structure of a local fiber concrete shield tunnel, installation cavities 13 are provided at the tops of both ends of the standard segments 1, and installation through holes are provided on the side walls of the installation cavities 13. The installation through holes in adjacent standard segments 1 are interconnected, and bolts are fixedly installed in the interconnected installation through holes.

[0027] As a further explanation of this embodiment, in this embodiment, after two adjacent standard segments 1 are hinged to each other, the two standard segments 1 can rotate along the circumferential direction of the hinge rod 32. Although this rotation effectively avoids the damage to the corners caused by direct hard contact between the two standard segments 1, it will also affect the assembly of the annular shield tunnel 2 to a certain extent. Therefore, after the two standard segments 1 are hinged, the two standard segments 1 are directly rotated to a mutually fitting state, and then the two standard segments 1 are fixed by bolts to form the two standard segments 1 as a whole, which is convenient for subsequent assembly and transportation.

[0028] As a preferred solution for the local fiber concrete shield tunnel segment structure, an anti-collision arc plate 14 is fixedly installed on the side wall of one side of the standard segment 1, and an arc-shaped sink groove 15 for accommodating the anti-collision arc plate 14 is opened on the side wall of the other side of the standard segment 1.

[0029] As a preferred solution for the segment structure of a local fiber concrete shield tunnel, multiple annular shield tunnels 2 are spliced ​​together to form a shield tunnel as a whole, and the anti-collision arc plates 14 on the annular shield tunnels 2 extend into the arc-shaped sinking grooves 15 in the adjacent annular shield tunnels 2.

[0030] As a further explanation of this embodiment, in this embodiment, when two annular shield tunnels 2 are spliced ​​together, the anti-collision arc plate 14 of one annular shield tunnel 2 extends into the arc-shaped sink groove 15 of the other annular shield tunnel 2, making the connection between the two annular shield tunnels 2 tighter.

[0031] Furthermore, the outside of the anti-collision arc plate 14 and the inside of the arc-shaped trough 15 are paved with fiber concrete. Based on the energy absorption and protective effect of the fiber concrete, during the splicing process of the two annular shield tunnels 2, even if a collision occurs between the anti-collision arc plate 14 and the arc-shaped trough 15, it will not cause the side wall of the standard pipe segment 1 to be broken, thereby protecting the entire annular shield tunnel 2.

[0032] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any person skilled in the art may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0033] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A local fiber concrete shield tunnel segment structure, comprising a standard segment (1), characterized in that: A plurality of the standard segments (1) are spliced ​​together to form an annular shield tunnel (2), and a rotating connection assembly (3) is installed between adjacent standard segments (1); The rotating connection assembly (3) comprises a mounting block (31) fixedly mounted on a side wall of one end of the standard pipe segment (1); a mounting groove (11) for accommodating the mounting block (31) is provided at the other end of the standard pipe segment (1); a hinge rod (32) is rotatably connected in the mounting block (31); and the hinge rod (32) passes through the two standard pipe segments (1) and enables the two standard pipe segments (1) to be hinged to each other.

2. The partial fiber reinforced concrete shield tunnel segment structure according to claim 1, characterized in that: The end of the hinged rod (32) is sleeved with a fixing screw sleeve (33), and the side walls on both sides of the standard pipe segment (1) are provided with a receiving groove (12) for receiving the head of the hinged rod (32) and the fixing screw sleeve (33).

3. The partial fiber reinforced concrete shield tunnel segment structure according to claim 1, characterized in that: The tops of both ends of the standard pipe segments (1) are provided with mounting cavities (13), and the side walls of all the mounting cavities (13) are provided with mounting through holes. The mounting through holes in adjacent standard pipe segments (1) are interconnected, and bolts are fixedly installed in the interconnected mounting through holes.

4. The partial fiber reinforced concrete shield tunnel segment structure according to claim 1, characterized in that: An anti-collision arc plate (14) is fixedly mounted on one side of the standard pipe segment (1), and an arc-shaped sinking groove (15) for accommodating the anti-collision arc plate (14) is provided on the other side of the standard pipe segment (1).

5. The partial fiber reinforced concrete shield tunnel segment structure according to claim 4, characterized in that: A plurality of the annular shield tunnels (2) are spliced ​​together to form an integral shield tunnel, and the anti-collision arc plates (14) on the annular shield tunnels (2) extend into the arc-shaped sinking grooves (15) in the adjacent annular shield tunnels (2).

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