A tunnel shield segment segment pipe piece connecting structure and a construction method thereof

Abstract

The application relates to the technical field of tunnel shield segment pipe pieces, and discloses a tunnel shield segment pipe piece connecting structure construction method. The tunnel shield segment pipe piece is provided with a first connecting rod fixedly connected to the side surface of the tunnel shield segment pipe piece, a second connecting rod fixedly connected to the front surface of the tunnel shield segment pipe piece, and a fixing ring sleeved with the side surfaces of the first connecting rod and the second connecting rod. When the tunnel shield segment pipe pieces are connected, the extension plate can extend into the inside of the connecting hole, the shrinkage filling plate can be shrunk into the inside of the extension plate to pull the spring under the influence of the thrust of the connecting hole, the spring can make the shrinkage filling plate be lifted upwards to drive the wear-resistant pad to be attached to the surface of the connecting hole, the second connecting rod can drive the stabbing rod to be attached to the inner wall of the connecting hole on the back surface of the tunnel shield segment pipe piece to generate friction, and the shrinkage filling plate can improve the fastening property of the tunnel shield segment pipe pieces during connection.

Description

Technical Field

[0001] This invention relates to the field of tunnel shield segment technology, specifically to a tunnel shield segment connection structure and its construction method. Background Technology

[0002] In recent years, the utilization of underground space centered on cities has become increasingly active, with the construction of infrastructure such as underground passages, subways, and water and gas transmission channels booming. This has spurred a large demand for tunnel construction. As an important construction method for underground space development, shield tunneling has been widely applied to the construction of various types of tunnels. Shield tunnels consist of multiple segments constructed of concrete, steel, or reinforced concrete, connected along the tunnel's main axis. Various joint structures are used at the joints between circumferential segments (segment joints) and between segment rings along the tunnel axis (ring joints), such as bidirectional bolted joints with extended anchors and hinged joints with interlocking connections. The assembly of the shield tunnel segments at the entrance and exit is a crucial step in shield tunnel construction; the quality of this process directly affects the axial quality of the completed tunnel and the effectiveness of environmental protection at the entrance and exit points. Unlike normal tunneling sections, the exit section segments have special stress requirements during the dismantling of the guide and negative ring segments. The entry section segments, on the other hand, require good integrity and stability under the gradual unloading of the shield's reverse jacking force. Therefore, after the entry and exit section segments are assembled, the segments must be reinforced on the basis of bolted connections to increase their overall rigidity. Thus, tunnel shield segment connectors are indispensable.

[0003] When connecting tunnel shield segments, steel bars are usually used to connect them through round holes. This results in poor stability when connecting multiple tunnel shield segments, which can easily lead to poor sealing. At the same time, it is impossible to position the tunnel shield segments during connection, so workers need to constantly adjust the position of the tunnel shield segments during the connection process, thus reducing the connection efficiency of the tunnel shield segments. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a tunnel shield segment connection structure and its construction method. When the first and second connecting rods are fitted into the connection hole, the extension plate extends into the interior of the connection hole. The shrinkage filler plate, influenced by the thrust during connection, retracts into the extension plate, pulling on the spring. When the extension plate is fully extended into the connection hole, the spring's elasticity lifts the shrinkage filler plate upwards, causing the wear-resistant pad to adhere to the surface of the connection hole. The second connecting rod causes the spiked bar to adhere to the inner wall of the connection hole on the rear surface of the shield segment, generating friction. Combined with the shrinkage filler plate, this improves the tightness of the shield segment connection. The design incorporates a locking rod that fits into a groove, allowing for the installation of a positioning plate. When shield tunnel segments are connected front to back, the sliding motion between the locking rod and the positioning plate pushes the locking rod downwards, causing the movable bead to adhere to the upper surface of the shield tunnel segment. As the shield tunnel segment moves, friction drives the movable bead to roll. Once multiple shield tunnel segments are fully fitted together, they adhere to a baffle, allowing the connection status of the shield tunnel segments to be judged based on the adhesion between the baffle and the shield tunnel segments. This provides advantages such as accurate positioning of the shield tunnel segment connections, solving problems of poor connection stability and reduced connection efficiency due to lack of positioning.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a shield tunnel segment, wherein a first connecting rod is fixedly connected to the side surface of the shield tunnel segment, a second connecting rod is fixedly connected to the front surface of the shield tunnel segment, a fixing ring is sleeved on the side surfaces of the first connecting rod and the second connecting rod, an extension plate is fixedly connected to the front surface of the fixing ring, an opening is provided on the upper surface of the extension plate, a spring is fixedly connected inside the extension plate, a shrinkage filling plate is fixedly connected to the end of the spring away from the extension plate, and a wear-resistant pad is provided on the front surface of the shrinkage filling plate;

[0008] The upper surface of the shield tunnel segment is provided with a groove, and an insert rod is fitted inside the groove. The side surface of the insert rod is provided with a rubber pad. A positioning plate is slidably connected to the end of the insert rod away from the groove, and the positioning plate is located above the shield tunnel segment. The lower surface of the positioning plate is provided with a movable groove, and a movable bead is movably connected inside the movable groove. A baffle is fixedly connected to the lower surface of the positioning plate, and the baffle is located behind the movable bead.

[0009] Preferably, an extension rod is fixedly connected inside the second connecting rod, and the end of the extension rod away from the second connecting rod extends out of the end of the second connecting rod, the diameter of the extension rod being smaller than that of the second connecting rod.

[0010] Preferably, a spike is fixedly connected to the upper surface of the extension rod, and the spike is tapered, with the height of the spike being the same as that of the second connecting rod.

[0011] Preferably, the rear surface of the shield tunnel segment is provided with a connecting hole, and the connecting hole is fitted and connected to the second connecting rod and the extension rod.

[0012] Preferably, the rear surface of the shrink filler plate is provided with a rubber soft rod, and the rubber soft rod is in contact with the extension plate.

[0013] A construction method for a tunnel shield segment connection structure includes the following steps:

[0014] S1. When multiple shield tunnel segments are connected and used, the fitting rod is fitted into the inside of the groove to install the positioning plate. When the shield tunnel segments are connected front and back, the sliding of the fitting rod and the positioning plate pushes the fitting rod downward, and the movable ball is attached to the upper surface of the shield tunnel segment. When the shield tunnel segment is pushed to move, the shield tunnel segment uses friction to drive the movable ball to roll. After multiple shield tunnel segments are fully fitted and connected, the shield tunnel segment is attached to the baffle, so that the connection status of the shield tunnel segment can be judged based on the previous attachment between the baffle and the shield tunnel segment.

[0015] S2. The first connecting rod and the second connecting rod are used to fit through the connection holes on the rear and side surfaces of the shield tunnel segment, so as to connect multiple shield tunnel segments. When the first connecting rod and the second connecting rod are fitted and connected to the shield tunnel segment, the second connecting rod drives the spike to fit against the inner wall of the connection hole on the rear surface of the shield tunnel segment to generate friction.

[0016] S3. The extension plate extends into the interior of the connecting hole, and the shrinkage filler plate is affected by the thrust when the connecting hole is connected. The shrinkage filler plate retracts into the interior of the extension plate in the direction of the thrust, pulling the spring. When the extension plate is fully extended into the interior of the connecting hole, the elasticity of the spring is used to push the shrinkage filler plate upward, causing the wear-resistant pad to adhere to the surface of the connecting hole. At the same time, when the shrinkage filler plate retracts into the interior of the extension plate, the shrinkage filler plate squeezes the rubber soft rod. With the elasticity of the spring, when the first connecting rod and the second connecting rod are separated from the connecting hole, the shrinkage filler plate pops out from the interior of the extension plate and resets. After the shield tunnel segment is connected, the fitting rod is pulled out from the interior of the groove to disassemble the positioning plate.

[0017] Compared with the prior art, the present invention provides a tunnel shield segment connection structure and its construction method, which has the following beneficial effects:

[0018] 1. When shield tunnel segments are connected, the extension plate can extend into the interior of the connection hole using the first connecting rod, the second connecting rod, and the connection hole. The shrinkage filler plate is affected by the thrust when the connection hole is connected, causing it to shrink into the interior of the extension plate in the direction of the thrust. This pulls the spring, and when the extension plate is fully extended into the interior of the connection hole, the elasticity of the spring can push the shrinkage filler plate upward, causing the wear-resistant pad to adhere to the surface of the connection hole. The second connecting rod can cause the spike to adhere to the inner wall of the connection hole on the rear surface of the shield tunnel segment, generating friction. In conjunction with the shrinkage filler plate, the tightness of the shield tunnel segment connection can be improved.

[0019] 2. In this invention, when multiple shield tunnel segments are connected and used, the fitting rod is fitted into the interior of the groove, allowing the positioning plate to be installed. When the shield tunnel segments are connected front and back, the sliding of the fitting rod and the positioning plate allows the fitting rod to be pushed downwards, and the movable bead can be attached to the upper surface of the shield tunnel segment. When the shield tunnel segment is pushed to move, the shield tunnel segment can use friction to drive the movable bead to roll. After multiple shield tunnel segments are fully fitted and connected, the shield tunnel segment can be attached to the baffle, allowing the connection status of the shield tunnel segments to be judged based on the previous attachment between the baffle and the shield tunnel segment, thereby enabling the positioning of the shield tunnel segment connection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the shield tunnel segment structure of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0022] Figure 3 This is a schematic diagram of the fixing ring structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the overall rear view structure of the present invention;

[0024] Figure 5 This is a bottom view of the positioning plate structure of the present invention.

[0025] The components include: 1. Shield tunnel segment; 2. First connecting rod; 3. Fixing ring; 4. Shrinkage filling plate; 5. Extension plate; 6. Spring; 7. Wear-resistant pad; 8. Positioning plate; 9. Connecting hole; 10. Fitting rod; 11. Rubber pad; 12. Movable bead; 13. Groove; 14. Movable slot; 15. Spike rod; 16. Second connecting rod; 17. Extension rod; 18. Baffle; 19. Soft rubber rod. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1:

[0028] Please see Figure 1-5 A tunnel shield segment connection structure includes a shield segment 1. A first connecting rod 2 is fixedly connected to the side surface of the shield segment 1, and a second connecting rod 16 is fixedly connected to the front surface of the shield segment 1. A fixing ring 3 is sleeved on the side surfaces of the first connecting rod 2 and the second connecting rod 16. An extension plate 5 is fixedly connected to the front surface of the fixing ring 3. The upper surface of the extension plate 5 has an opening. A spring 6 is fixedly connected inside the extension plate 5. A shrinkage filling plate 4 is fixedly connected to the end of the spring 6 away from the extension plate 5. A wear-resistant pad 7 is provided on the front surface of the shrinkage filling plate 4. The rear surface is provided with a rubber flexible rod 19, which is attached to the extension plate 5. When the shield tunnel segment 1 is connected, the extension plate 5 can extend into the interior of the connection hole 9 when the first connecting rod 2 and the second connecting rod 16 are fitted into the connection hole 9. The shrinkage filling plate 4 is affected by the thrust when the connection hole 9 is connected, so the shrinkage filling plate 4 can shrink into the interior of the extension plate 5 in the direction of the thrust, pulling the spring 6. When the extension plate 5 is fully extended into the interior of the connection hole 9, the elasticity of the spring 6 can push the shrinkage filling plate 4 upward, causing the wear-resistant pad 7 to be attached to the surface of the connection hole 9. The surface fit ensures high stability during the connection of the tunnel segment 1. Simultaneously, when the shrink-fill plate 4 retracts into the extension plate 5, it compresses the rubber soft rod 19. Combined with the elasticity of the spring 6, when the first connecting rod 2 and the second connecting rod 16 separate from the connecting hole 9, the shrink-fill plate 4 can pop out and reset from inside the extension plate 5, facilitating its later use. An extension rod 17 is fixedly connected inside the second connecting rod 16, with one end of the extension rod 17 extending beyond the second connecting rod 16. The diameter of the extension rod 17 is less than... The upper surfaces of the second connecting rod 16 and the extension rod 17 are fixedly connected with spikes 15, which are tapered and have the same height as the second connecting rod 16. The rear surface of the shield segment 1 is provided with a connecting hole 9, which is fitted with the second connecting rod 16 and the extension rod 17. When the first connecting rod 2 and the second connecting rod 16 are fitted with the shield segment 1, the second connecting rod 16 can drive the spikes 15 to fit against the inner wall of the connecting hole 9 on the rear surface of the shield segment 1 to generate friction. With the help of the shrinkage filling plate 4, the tightness of the shield segment 1 during connection can be improved.

[0029] The upper surface of the shield tunnel segment 1 is provided with a groove 13, and a fitting rod 10 is fitted inside the groove 13. Rubber pads 11 are provided on the side surfaces of the fitting rod 10. A positioning plate 8 is slidably connected to the end of the fitting rod 10 away from the groove 13, and the positioning plate 8 is located above the shield tunnel segment 1. The lower surface of the positioning plate 8 is provided with a movable groove 14, and a movable bead 12 is movably connected inside the movable groove 14. A baffle 18 is fixedly connected to the lower surface of the positioning plate 8, and the baffle 18 is located behind the movable bead 12. The fitting rod 10 is fitted into the groove 13, allowing the positioning plate 8 to be installed. When the shield tunnel segment 1 is used for front-to-back connection... When the locking rod 10 slides against the positioning plate 8, it can push the locking rod 10 downwards, and the movable bead 12 can fit against the upper surface of the shield segment 1. When the shield segment 1 is pushed to move, the shield segment 1 can use friction to drive the movable bead 12 to roll. After multiple shield segment segments 1 are fully locked and connected, the shield segment segments 1 can fit against the baffle 18, so that the connection status of the shield segment segments 1 can be judged based on the previous fit between the baffle 18 and the shield segment segments 1. After the shield segment segments 1 are connected, the locking rod 10 can be pulled out from the inside of the groove 13 to disassemble the positioning plate 8 for easy later use.

[0030] Example 2:

[0031] A construction method for a tunnel shield segment connection structure, characterized by comprising the following steps:

[0032] S1. When multiple shield tunnel segments 1 are connected and used, the fitting rod 10 is fitted into the groove 13 to install the positioning plate 8. When the shield tunnel segments 1 are connected front and back, the fitting rod 10 is pushed downward by sliding with the positioning plate 8. The movable bead 12 is attached to the upper surface of the shield tunnel segment 1. When the shield tunnel segment 1 is pushed to move, the shield tunnel segment 1 uses friction to drive the movable bead 12 to roll. After multiple shield tunnel segments 1 are fully fitted and connected, the shield tunnel segment 1 is attached to the baffle 18, so that the connection status of the shield tunnel segment 1 can be judged based on the previous attachment between the baffle 18 and the shield tunnel segment 1.

[0033] S2. The first connecting rod 2 and the second connecting rod 16 are used to fit through the connection holes 9 on the rear and side surfaces of the shield tunnel segment 1, so as to connect multiple shield tunnel segment 1. When the first connecting rod 2 and the second connecting rod 16 are fitted and connected to the shield tunnel segment 1, the second connecting rod 16 drives the spike rod 15 to fit against the inner wall of the connection hole 9 on the rear surface of the shield tunnel segment 1 to generate friction.

[0034] S3. The extension plate 5 extends into the interior of the connecting hole 9. The shrinkage filling plate 4 is affected by the thrust when the connecting hole 9 is connected, causing the shrinkage filling plate 4 to shrink into the interior of the extension plate 5 in the direction of the thrust, pulling the spring 6. When the extension plate 5 is fully extended into the interior of the connecting hole 9, the elasticity of the spring 6 is used to push the shrinkage filling plate 4 upward, causing the wear-resistant pad 7 to adhere to the surface of the connecting hole 9. At the same time, when the shrinkage filling plate 4 shrinks into the interior of the extension plate 5, the shrinkage filling plate 4 squeezes the rubber soft rod 19. With the elasticity of the spring 6, when the first connecting rod 2 and the second connecting rod 16 are separated from the connecting hole 9, the shrinkage filling plate 4 pops out from the interior of the extension plate 5 and resets. After the shield tunnel segment 1 is connected, the fitting rod 10 is pulled out from the interior of the groove 13 to disassemble the positioning plate 8.

[0035] In use, the fitting rod 10 is fitted into the groove 13 to allow the positioning plate 8 to be installed. When the shield tunnel segment 1 is used for front-to-back connection, the sliding of the fitting rod 10 and the positioning plate 8 allows the fitting rod 10 to be pushed downwards, and the movable bead 12 can be attached to the upper surface of the shield tunnel segment 1. When the shield tunnel segment 1 is pushed to move, the shield tunnel segment 1 can use friction to drive the movable bead 12 to roll. After multiple shield tunnel segment segments 1 are fully fitted and connected, the shield tunnel segment 1 can be attached to the baffle 18, so that the connection status of the shield tunnel segment 1 can be judged based on the previous attachment between the baffle 18 and the shield tunnel segment 1. When the first connecting rod 2 and the second connecting rod 16 are fitted into the connecting hole 9, the extension plate 5 can extend into the interior of the connecting hole 9. The shrinkage filling plate 4 is affected by the thrust when the connecting hole 9 is connected, so the shrinkage filling plate 4 can shrink into the interior of the extension plate 5 in the direction of the thrust, pulling the spring 6. When the extension plate 5 is fully extended into the interior of the connecting hole 9, the elasticity of the spring 6 can push the shrinkage filling plate 4 upward, causing the wear-resistant pad 7 to adhere to the surface of the connecting hole 9. The second connecting rod 16 can drive the spike 15 to adhere to the inner wall of the connecting hole 9 on the rear surface of the shield segment 1, generating friction. With the shrinkage filling plate 4, the tightness of the shield segment 1 during connection can be improved.

[0036] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel shield segment connection structure, comprising shield segment (1), characterized in that: The side surface of the shield segment pipe piece (1) is fixedly connected with a first connecting rod (2), the front surface of the shield segment pipe piece (1) is fixedly connected with a second connecting rod (16), the side surface of the first connecting rod (2) and the second connecting rod (16) is sleeved with a fixing ring (3), the front surface of the fixing ring (3) is fixedly connected with an extension plate (5), the upper surface of the extension plate (5) is provided with an opening, the inside of the extension plate (5) is fixedly connected with a spring (6), the end, away from the extension plate (5), of the spring (6) is fixedly connected with a shrinkage filling plate (4), and the front surface of the shrinkage filling plate (4) is provided with a wear-resistant pad (7). The upper surface of the shield segment pipe piece (1) is provided with a groove (13), the inside of the groove (13) is embeddedly connected with an embedded rod (10), the side surface of the embedded rod (10) is provided with a rubber pad (11), the end, away from the groove (13), of the embedded rod (10) is slidingly connected with a positioning plate (8), and the positioning plate (8) is located above the shield segment pipe piece (1), the lower surface of the positioning plate (8) is provided with a movable groove (14), the inside of the movable groove (14) is movably connected with a movable bead (12), and the lower surface of the positioning plate (8) is fixedly connected with a baffle (18), and the baffle (18) is located behind the movable bead (12).

2. The tunnel shield segment segmental lining connection structure according to claim 1, characterized in that: The inside of the second connecting rod (16) is fixedly connected with an extension rod (17), and the end, away from the second connecting rod (16), of the extension rod (17) extends out of one end of the second connecting rod (16), and the diameter of the extension rod (17) is smaller than that of the second connecting rod (16).

3. The tunnel shield segment segmental lining connection structure according to claim 2, characterized in that: The upper surface of the extension rod (17) is fixedly connected with a pricking rod (15), and the pricking rod (15) is conical.

4. The tunnel shield segment segmental lining connection structure according to claim 3, characterized in that: The rear surface of the shield segment pipe piece (1) is provided with a connecting hole (9), and the connecting hole (9) is embeddedly connected with the second connecting rod (16) and the extension rod (17).

5. The tunnel shield segment segmental lining connection structure according to claim 4, characterized in that: The rear surface of the shrinkage filling plate (4) is provided with a rubber soft stick (19), and the rubber soft stick (19) is attached to the extension plate (5).

6. The tunnel shield segment segmental lining connection structure construction method according to claim 5, characterized in that, The steps include the following: S1, when multiple shield segment pipe pieces (1) are connected for use, the embedded rod (10) is embedded into the inside of the groove (13) to install the positioning plate (8), when the shield segment pipe piece (1) is connected for use in front and back, the embedded rod (10) is pushed down by sliding the embedded rod (10) and the positioning plate (8), the movable bead (12) is attached to the upper surface of the shield segment pipe piece (1), when the shield segment pipe piece (1) is pushed to move, the shield segment pipe piece (1) drives the movable bead (12) to roll by friction, when multiple shield segment pipe pieces (1) are completely embeddedly connected, the shield segment pipe piece (1) is attached to the baffle (18) to judge the connection of the shield segment pipe piece (1) according to the attachment of the baffle (18) and the shield segment pipe piece (1) before. S2, the first connecting rod (2) and the second connecting rod (16) are embedded through the connecting hole (9) on the rear surface and the side surface of the shield segment pipe piece (1), so that the plurality of shield segment pipe pieces (1) are connected, when the first connecting rod (2), the second connecting rod (16) and the shield segment pipe piece (1) are embedded and connected, the second connecting rod (16) drives the spike rod (15) to be attached to the inner wall of the connecting hole (9) on the rear surface of the shield segment pipe piece (1) to generate friction force; S3, the extension plate (5) extends into the inside of the connecting hole (9), and the contraction filling plate (4) is affected by the thrust when the connecting hole (9) is connected, so that the contraction filling plate (4) is contracted into the inside of the extension plate (5) along the direction of the thrust to pull the spring (6), when the extension plate (5) is completely extended into the inside of the connecting hole (9), the spring (6) is used to lift the contraction filling plate (4) upward to drive the wear-resistant pad (7) to be attached to the surface of the connecting hole (9), at the same time, when the contraction filling plate (4) is contracted into the inside of the extension plate (5), the contraction filling plate (4) is extruded to the rubber soft stick (19), and the elasticity of the spring (6) is matched, when the first connecting rod (2), the second connecting rod (16) and the connecting hole (9) are separated, the contraction filling plate (4) is popped out from the inside of the extension plate (5) to reset, when the shield segment pipe piece (1) is connected, the embedded rod (10) is pulled out from the inside of the groove (13) to disassemble the positioning plate (8).

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