Tunnel shield segment duct piece connecting structure and construction method thereof

Abstract

The invention relates to the technical field of tunnel shield segment segments, and discloses a construction method of a tunnel shield segment segment connecting structure. Comprising a shield segment segment, the side surface of the shield segment segment is fixedly connected with a first connecting rod, the front surface of the shield segment segment is fixedly connected with a second connecting rod, and the side surface of the first connecting rod and the side surface of the second connecting rod are sleeved with fixing rings. The extension plate can extend into the connecting hole, the contraction filling plate is affected by thrust generated when the connecting hole is connected, the contraction filling plate can be contracted into the extension plate in the thrust direction to pull the spring, and the contraction filling plate can be jacked upwards through the elasticity of the spring to drive the abrasion-resistant pad to be attached to the surface of the connecting hole. The second connecting rods can drive the thorn rods to be attached to the inner walls of the connecting holes in the rear surfaces of the shield segment segments to generate friction force, and the tightness of the shield segment segments in the connecting process can be improved in cooperation with the shrinkage filling plates.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel shield segment segments, and in particular to a tunnel shield segment segment connection structure and a construction method thereof. Background Art

[0002] In recent years, the utilization of underground space centered on cities has become increasingly active. The construction of infrastructure such as underground passages, subways, and water and gas transmission channels has flourished, giving rise to a large number of tunnel construction needs. As an important construction method for the development and construction of underground space, the shield method has been widely used in the construction of various types of tunnels. The shield tunnel includes multiple segments constructed of concrete, steel structure or reinforced concrete, which are connected in the main axis direction of the tunnel. A variety of joint structures are used in the joints between the circumferential segment blocks (segment joints) and the joints between the segment rings in the tunnel axis direction (ring joints), such as two-way bolt joints with expansion anchors and hinge joints with chimeric connections. The assembly of the shield entry and exit segments is an important part of the shield method for tunnel construction. The quality of this process will directly affect the axis quality of the tunnel after completion and the effectiveness of environmental protection at the entrance and exit. Different from the normal excavation section, the segments of the exit section have special force requirements when guiding and removing the negative ring segments. The segments of the entry section are required to have good integrity and stability when the reverse top force of the shield is gradually unloaded. Therefore, after the segments of the entry and exit sections are assembled, the segments must be strengthened on the basis of bolt connection to increase their overall rigidity. Therefore, the tunnel shield segment connector is indispensable;

[0003] When connecting tunnel shield segment segments, steel bars and circular holes are usually used for connection, which results in poor stability of multiple tunnel shield segment segments when connected, and is prone to poor sealing effects. At the same time, when connecting the tunnel shield segment segments, the tunnel shield segment segments cannot be positioned, resulting in the need for workers to constantly calibrate the tunnel shield segment segments during the connection process, thereby reducing the connection efficiency of the tunnel shield segment segments. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a tunnel shield segment pipe segment connection structure and a construction method thereof. When a first connecting rod and a second connecting rod are engaged with a connecting hole for connection, an extension plate can be extended into the interior of the connecting hole, and the shrinkage filling plate is affected by the thrust when the connecting hole is connected, so that the shrinkage filling plate can shrink into the interior of the extension plate following the thrust direction to pull the spring, so that when the extension plate is fully extended into the interior of the connecting hole, the elasticity of the spring can be used to lift the shrinkage filling plate upward to drive the wear-resistant pad to fit the surface of the connecting hole, and the second connecting rod can drive the thorn rod to fit the inner wall of the connecting hole on the rear surface of the shield segment pipe segment to generate friction, which can be used in conjunction with the shrinkage filling plate to improve the fastening of the shield segment pipe segment when connected. The engaging rod is engaged into the inside of the groove so that the positioning plate can be installed. When the shield segment segment is used for front and rear connection, the engaging rod and the positioning plate slide to push the engaging rod downward, and the movable bead can fit with the upper surface of the shield segment segment. When the shield segment segment is pushed to move, the shield segment segment can use friction to drive the movable bead to roll. When multiple shield segment segments are completely engaged and connected, the shield segment segment can fit with the baffle plate, so that the connection status of the shield segment segment can be judged according to the fit between the baffle plate and the shield segment segment, thereby positioning the shield segment segment connection, etc., which solves the problems of poor connection stability and inability to position, which reduces the connection efficiency.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a shield segment segment, the side surface of the shield segment segment is fixedly connected to a first connecting rod, the front surface of the shield segment segment is fixedly connected to a second connecting rod, the side surfaces of the first connecting rod and the second connecting rod are sleeved with a fixing ring, the front surface of the fixing ring is fixedly connected to an extension plate, the upper surface of the extension plate is provided with an opening, the inside of the extension plate is fixedly connected to a spring, the end of the spring away from the extension plate is fixedly connected to a shrinkage filling plate, and the front surface of the shrinkage filling plate is provided with a wear-resistant pad.

[0008] Preferably, an extension rod is fixedly connected inside the second connecting rod, and one end of the extension rod extends out of one end of the second connecting rod away from the second connecting rod, and the diameter of the extension rod is smaller than that of the second connecting rod.

[0009] Preferably, a thorn rod is fixedly connected to the upper surface of the extension rod, and the thorn rod is arranged in a cone shape, and the height of the thorn rod is the same as that of the second connecting rod.

[0010] Preferably, a connecting hole is provided on the rear surface of the shield segment segment, and the connecting hole is engaged and connected with the second connecting rod and the extension rod.

[0011] Preferably, the upper surface of the shield segment segment is provided with a groove, the interior of the groove is engaged with an engaging rod, and the side surfaces of the engaging rod are provided with rubber pads.

[0012] Preferably, one end of the engaging rod away from the groove is slidably connected with a positioning plate, and the positioning plate is located above the shield segment segment.

[0013] Preferably, a movable groove is provided on the lower surface of the positioning plate, and a movable bead is movably connected inside the movable groove.

[0014] Preferably, a rubber rod is provided on the rear surface of the shrinkage filling plate, and the rubber rod is in contact with the extension plate.

[0015] Preferably, a baffle is fixedly connected to the lower surface of the positioning plate, and the baffle is located behind the movable bead.

[0016] A method for constructing a tunnel shield segment segment connection structure comprises the following steps:

[0017] S1. When multiple shield segments are connected for use, the engaging rod is engaged into the inside of the groove so that the positioning plate can be installed. When the shield segments are connected front and back, the engaging rod and the positioning plate are slid to push the engaging rod downward, and the movable bead can fit with the upper surface of the shield segment. When the shield segment is pushed to move, the shield segment can use friction to drive the movable bead to roll. When multiple shield segments are fully engaged and connected, the shield segment can fit with the baffle, so that the connection status of the shield segment can be judged according to the fit between the baffle and the shield segment;

[0018] S2, using the first connecting rod and the second connecting rod to be embedded through the connection holes on the rear surface and the side surface of the shield segment segment, so that multiple shield segment segments can be connected. When the first connecting rod, the second connecting rod and the shield segment segment are embedded and connected, the second connecting rod can drive the thorn rod to fit with the inner wall of the connection hole on the rear surface of the shield segment segment to generate friction;

[0019] S3. The extension plate can be extended into the interior of the connecting hole, and the shrinkage filling plate is affected by the thrust when the connecting hole is connected, so that the shrinkage filling plate can shrink into the interior of the extension plate following the thrust direction to pull the spring, so that when the extension plate is fully extended into the interior of the connecting hole, the elasticity of the spring can be used to lift the shrinkage filling plate upward to drive the wear-resistant pad to fit the surface of the connecting hole. At the same time, when the shrinkage filling plate shrinks into the interior of the extension plate, the shrinkage filling plate can squeeze 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 filling plate can pop out from the interior of the extension plate and reset. When the shield segment segments are connected, the engaging rod can be pulled out from the inside of the groove to disassemble the positioning plate.

[0020] Compared with the prior art, the present invention provides a tunnel shield segment segment connection structure and a construction method thereof, which has the following beneficial effects:

[0021] 1. According to the present invention, when the shield segment segments are connected, the first connecting rod, the second connecting rod and the connecting hole are used for interlocking connection, and the extension plate can be extended into the interior of the connecting hole, and the shrinkage filling plate is affected by the thrust when the connecting hole is connected, so that the shrinkage filling plate can shrink into the interior of the extension plate following the thrust direction to pull the spring, so that when the extension plate is fully extended into the interior of the connecting hole, the elasticity of the spring can be used to lift the shrinkage filling plate upward to drive the wear-resistant pad to fit the surface of the connecting hole, and the second connecting rod can drive the barb to fit the inner wall of the connecting hole on the rear surface of the shield segment segment to generate friction, and the shrinkage filling plate can be used to improve the tightness of the shield segment segment connection.

[0022] 2. According to the present invention, when multiple shield segment segments are connected for use, the engaging rod is engaged into the inside of the groove so that the positioning plate can be installed. When the shield segment segments are connected front and back for use, the engaging rod and the positioning plate slide to push the engaging rod downward, and the movable bead can fit with the upper surface of the shield segment segment. When the shield segment segment is pushed to move, the shield segment segment can use friction to drive the movable bead to roll. When multiple shield segment segments are completely engaged and connected, the shield segment segment can fit with the baffle plate, so that the connection condition of the shield segment segment can be judged according to the fit between the baffle plate and the shield segment segment, thereby positioning the shield segment segment connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the shield segment structure of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle;

[0025] Figure 3 It is a schematic diagram of the structure of the fixing ring of the present invention;

[0026] Figure 4 It is a schematic diagram of the overall rear view structure of the present invention;

[0027] Figure 5 It is a bottom view structural schematic diagram of the positioning plate of the present invention.

[0028] Among them: 1. Shield segment segment; 2. First connecting rod; 3. Fixed ring; 4. Shrinkage filling plate; 5. Extension plate; 6. Spring; 7. Wear-resistant pad; 8. Positioning plate; 9. Connecting hole; 10. Mosaic rod; 11. Rubber pad; 12. Movable bead; 13. Groove; 14. Movable groove; 15. Thorn rod; 16. Second connecting rod; 17. Extension rod; 18. Baffle; 19. Rubber soft rod. DETAILED DESCRIPTION

[0029] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1-5A tunnel shield segment segment connection structure comprises a shield segment segment 1, a first connecting rod 2 is fixedly connected to the side surface of the shield segment segment 1, a second connecting rod 16 is fixedly connected to the front surface of the shield segment 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, an opening is provided on the upper surface of the extension plate 5, a spring 6 is fixedly connected to the inside of the extension plate 5, an end of the spring 6 away from the extension plate 5 is fixedly connected to a shrinkage filling plate 4, a wear-resistant pad 7 is provided on the front surface of the shrinkage filling plate 4 A rubber soft rod 19 is provided on the rear surface, and the rubber soft rod 19 is in contact with the extension plate 5. When the shield segment segment 1 is connected, the first connecting rod 2 and the second connecting rod 16 are used to engage with the connecting hole 9, and the extension plate 5 can extend into the interior of the connecting hole 9, and the shrinkage filling plate 4 is affected by the thrust when the connecting hole 9 is connected, so that the shrinkage filling plate 4 can shrink into the interior of the extension plate 5 following the thrust direction to pull the spring 6, so that when the extension plate 5 is fully extended into the interior of the connecting hole 9, the elasticity of the spring 6 can be used to push the shrinkage filling plate 4 upward to drive the wear-resistant pad 7 and the surface of the connecting hole 9. The surface fits well, so that the shield segment segment 1 is more stable when connected. At the same time, when the shrinkage filling plate 4 shrinks into the extension plate 5, the shrinkage filling plate 4 can squeeze 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 can pop out and reset from the inside of the extension plate 5, which is convenient for the later use of the shrinkage filling plate 4. The second connecting rod 16 is fixedly connected to the inside of the second connecting rod 16, and the extension rod 17 extends from one end of the second connecting rod 16 away from the second connecting rod 16. The diameter of the extension rod 17 is less than The second connecting rod 16 and the upper surface of the extension rod 17 are fixedly connected with the thorn rod 15, and the thorn rod 15 is set in a cone shape. The height of the thorn rod 15 is the same as that of the second connecting rod 16. The rear surface of the shield segment segment 1 is provided with a connecting hole 9, and the connecting hole 9 is engaged and connected with the second connecting rod 16 and the extension rod 17. When the first connecting rod 2, the second connecting rod 16 and the shield segment segment 1 are engaged and connected, the second connecting rod 16 can drive the thorn rod 15 to fit with the inner wall of the connecting hole 9 on the rear surface of the shield segment segment 1 to generate friction, and the shrinking filling plate 4 can be used to improve the tightness of the shield segment segment 1 when connected.

[0032] The upper surface of the shield segment segment 1 is provided with a groove 13, and the inside of the groove 13 is connected with a fitting rod 10, and the side surfaces of the fitting rod 10 are provided with a rubber pad 11. The end of the fitting rod 10 away from the groove 13 is slidably connected with a positioning plate 8, and the positioning plate 8 is located above the shield segment segment 1, and the lower surface of the positioning plate 8 is provided with a movable groove 14, and 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. The fitting rod 10 is fitted into the inside of the groove 13 so that the positioning plate 8 can be installed. When the shield segment segment 1 is used for front and rear connection When the shield segment 1 is pushed to move, the shield segment 1 can use friction to drive the movable bead 12 to roll. When multiple shield segment segments 1 are fully engaged and connected, the shield segment segment 1 can fit with the baffle 18, so that the connection status of the shield segment segment 1 can be judged according to the fit between the baffle 18 and the shield segment segment 1. When the shield segment 1 is connected, the engaging rod 10 can be pulled out from the inside of the groove 13 to disassemble the positioning plate 8, which is convenient for later use.

[0033] Embodiment 2:

[0034] A method for constructing a tunnel shield segment connection structure, characterized in that it comprises the following steps:

[0035] S1. When multiple shield segments 1 are connected for use, the engaging rod 10 is engaged into the inside of the groove 13 so that the positioning plate 8 can be installed. When the shield segment segments 1 are connected for use, the engaging rod 10 and the positioning plate 8 are used to slide so that the engaging rod 10 can be pushed downward, and the movable bead 12 can fit with the upper surface of the shield segment segment 1. When the shield segment segment 1 is pushed to move, the shield segment segment 1 can use friction to drive the movable bead 12 to roll. When multiple shield segment segments 1 are fully engaged and connected, the shield segment segment 1 can fit with the baffle 18, so that the connection status of the shield segment segment 1 can be judged according to the fit between the baffle 18 and the shield segment segment 1.

[0036] S2. The first connecting rod 2 and the second connecting rod 16 are used to fit through the connecting holes 9 on the rear surface and the side surface of the shield segment segment 1, so that multiple shield segment segments 1 can be connected. When the first connecting rod 2, the second connecting rod 16 and the shield segment segment 1 are fitted and connected, the second connecting rod 16 can drive the thorn rod 15 to fit with the inner wall of the connecting hole 9 on the rear surface of the shield segment segment 1 to generate friction;

[0037] S3. The extension plate 5 can be extended into the interior of the connecting hole 9, and the shrinkage filling plate 4 is affected by the thrust when the connecting hole 9 is connected, so that the shrinkage filling plate 4 can shrink into the interior of the extension plate 5 following the thrust direction to pull the spring 6, so that when the extension plate 5 is fully extended into the interior of the connecting hole 9, the elasticity of the spring 6 can be used to push the shrinkage filling plate 4 upward to drive the wear-resistant pad 7 to fit 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 can squeeze 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 can pop out from the interior of the extension plate 5 and reset. When the shield segment segment 1 is connected, the engaging rod 10 can be pulled out from the inside of the groove 13 to disassemble the positioning plate 8.

[0038] When in use, the engaging rod 10 is engaged into the interior of the groove 13 so that the positioning plate 8 can be installed. When the shield segment segment 1 is used for front and rear connection, the engaging rod 10 and the positioning plate 8 are used to slide so that the engaging rod 10 can be pushed downward, and the movable bead 12 can fit with the upper surface of the shield segment segment 1. When the shield segment segment 1 is pushed to move, the shield segment segment 1 can use friction to drive the movable bead 12 to roll. When multiple shield segment segments 1 are completely engaged and connected, the shield segment segment 1 can fit with the baffle 18, so that the connection condition of the shield segment segment 1 can be judged according to the fit between the baffle 18 and the shield segment segment 1. When the first connecting rod 2 and the second connecting rod 16 are engaged and connected with the connecting hole 9, the extension plate 5 can be extended into the interior of the connecting hole 9, and the shrinkage filling plate 4 is affected by the thrust when the connecting hole 9 is connected, so that the shrinkage filling plate 4 can shrink into the interior of the extension plate 5 following the thrust direction to pull the spring 6, so that when the extension plate 5 is fully extended into the interior of the connecting hole 9, the elasticity of the spring 6 can be used to lift the shrinkage filling plate 4 upward to drive the wear-resistant pad 7 to fit with the surface of the connecting hole 9, and the second connecting rod 16 can drive the thorn rod 15 to fit with the inner wall of the connecting hole 9 on the rear surface of the shield segment segment 1 to generate friction, and cooperate with the shrinkage filling plate 4 to improve the tightness of the shield segment segment 1 when connected.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel shield segment segment connection structure, comprising a shield segment segment (1), characterized in that: The side surface of the shield segment segment (1) is fixedly connected to a first connecting rod (2), the front surface of the shield segment segment (1) is fixedly connected to a second connecting rod (16), the side surfaces of the first connecting rod (2) and the second connecting rod (16) are sleeved with a fixing ring (3), the front surface of the fixing ring (3) is fixedly connected to an extension plate (5), the upper surface of the extension plate (5) is provided with an opening, the interior of the extension plate (5) is fixedly connected to a spring (6), the end of the spring (6) away from the extension plate (5) is fixedly connected to a shrinkage filling plate (4), and the front surface of the shrinkage filling plate (4) is provided with a wear-resistant pad (7).

2. A tunnel shield segment connection structure according to claim 1, characterized in that: An extension rod (17) is fixedly connected inside the second connecting rod (16), and the extension rod (17) extends out of one end of the second connecting rod (16) away from 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. A tunnel shield segment connection structure according to claim 2, characterized in that: The upper surface of the extension rod (17) is fixedly connected with a thorn rod (15), and the thorn rod (15) is arranged in a cone shape. The height of the thorn rod (15) is the same as that of the second connecting rod (16).

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

5. The tunnel shield segment connection structure according to claim 1, characterized in that: The upper surface of the shield segment segment (1) is provided with a groove (13), the interior of the groove (13) is engaged with an engaging rod (10), and the side surfaces of the engaging rod (10) are provided with a rubber pad (11).

6. A tunnel shield segment connection structure according to claim 5, characterized in that: One end of the engaging rod (10) away from the groove (13) is slidably connected to a positioning plate (8), and the positioning plate (8) is located above the shield segment segment (1).

7. A tunnel shield segment connection structure according to claim 6, characterized in that: A movable groove (14) is provided on the lower surface of the positioning plate (8), and a movable bead (12) is movably connected inside the movable groove (14).

8. The tunnel shield segment connection structure according to claim 1, characterized in that: A rubber soft rod (19) is provided on the rear surface of the shrinkage filling plate (4), and the rubber soft rod (19) is in contact with the extension plate (5).

9. The tunnel shield segment connection structure according to claim 6, characterized in that: 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).

10. A method for constructing a tunnel shield segment connection structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. When multiple shield segments (1) are connected for use, the engaging rod (10) is engaged into the inside of the groove (13) so that the positioning plate (8) can be installed. When the shield segments (1) are connected for use, the engaging rod (10) and the positioning plate (8) are slidably moved so that the engaging rod (10) can be pushed downward, and the movable bead (12) can be fitted with the upper surface of the shield segment segment (1). When the shield segment segment (1) is pushed to move, the shield segment segment (1) can use friction to drive the movable bead (12) to roll. When multiple shield segments (1) are completely engaged and connected, the shield segment segment (1) can be fitted with the baffle (18), so that the connection status of the shield segment segment (1) can be judged according to the fit between the baffle (18) and the shield segment segment (1). S2. The first connecting rod (2) and the second connecting rod (16) are used to be engaged with each other through the connecting holes (9) on the rear surface and the side surface of the shield segment segment (1), so that a plurality of shield segment segments (1) can be connected. When the first connecting rod (2), the second connecting rod (16) and the shield segment segment (1) are engaged and connected, the second connecting rod (16) can drive the thorn rod (15) to fit with the inner wall of the connecting hole (9) on the rear surface of the shield segment segment (1) to generate friction force. S3. The extension plate (5) can be extended into the interior of the connecting hole (9), and the shrinkage filling plate (4) is affected by the thrust when the connecting hole (9) is connected, so that the shrinkage filling plate (4) can shrink into the interior of the extension plate (5) in the direction of the thrust to pull the spring (6), so that when the extension plate (5) is fully extended into the interior of the connecting hole (9), the elasticity of the spring (6) can be used to push the shrinkage filling plate (4) upward to drive the wear-resistant pad (7) to fit 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) can squeeze 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) can pop out from the interior of the extension plate (5) and reset. When the shield segment segments (1) are connected, the engaging rod (10) can be pulled out from the inside of the groove (13) to disassemble the positioning plate (8).

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