Shield segment connecting and reinforcing structure

Abstract

The utility model relates to the technical field of shield tunnel engineering, in particular to a shield segment connecting and reinforcing structure. Comprising a duct piece body, a limiting piece and a connecting piece, the duct piece body comprises a first connecting duct piece and a second connecting duct piece, the limiting piece comprises a fixing screw and a limiting steel plate, and the connecting piece comprises a nut, a gasket and a connecting steel plate. The structure is simple, operation is convenient, economical efficiency is good, the strength and rigidity of the joints of the shield segments can be effectively improved, the deformation resistance of a shield tunnel is improved, and the safety and stability of the tunnel structure are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunnel engineering, in particular to a shield segment connection reinforcement structure. Background Art

[0002] Shield tunnels are generally assembled from prefabricated lining segments, and the joints between the segments are connected by bolts. The joints of the shield segments are the weak stress points of the tunnel structure.

[0003] At present, under complex conditions such as shield starting and receiving, excavation of connecting channels, tunnel crossing and underpass, and crossing of fault fracture zones, the overall stability of the shield tunnel structure is easily affected by the external environment, and the joints of the segments are prone to misalignment, damage, and cracking, which directly affect the bearing capacity and durability of the tunnel structure and pose certain safety hazards. Utility Model Content

[0004] In order to overcome the problem of insufficient stability of segment connections under complex conditions, the utility model proposes a segment connection reinforcement structure suitable for complex conditions, which has a simple structure and is easy to install. It can effectively improve the overall stiffness of the shield tunnel structure and ensure the safety and stability of the tunnel structure.

[0005] The technical solution of the utility model is:

[0006] A shield segment connection reinforcement structure comprises a segment body, a limiter, and a connector. The segment body comprises a first connecting segment and a second connecting segment. The limiter comprises a fixing screw and a limiter steel plate. The connector comprises a nut, a washer, and a connecting steel plate.

[0007] The segment body is pre-embedded with a limiting piece, and the limiting piece is fully bonded to the concrete of the segment body.

[0008] Insert holes are arranged at both ends of the limiting steel plate, and the limiting steel plate is fixedly connected to the fixing screw rod through a weld.

[0009] The bottom of the fixing screw is provided with anti-slip teeth and an outwardly expanded end to increase the bonding strength with the concrete of the pipe segment body and ensure a reliable connection.

[0010] The connecting steel plate is provided with connecting holes around its periphery, and fixing screws can be embedded in the connecting holes.

[0011] The top of the fixing screw is provided with an external thread, and the external thread of the fixing screw is tightly engaged with the internal thread of the nut.

[0012] A washer is arranged below the nut, and the washer is tightly fitted to the side wall of the connecting steel plate.

[0013] The beneficial effects of the utility model are:

[0014] This product increases the strength and rigidity of the joints of the shield segments, which can effectively resist the impact force caused by the dislocation between the segments under adverse conditions, and ensure that the shield segments are in a relatively stable state.

[0015] This product improves the seismic performance of the shield tunnel, ensures its effectiveness when passing through the fault fracture zone, and improves the shield tunnel's ability to resist deformation.

[0016] This product reserves conditions for later maintenance and reinforcement of the shield tunnel, and also provides a fixed base point for related equipment.

[0017] This product has the advantages of simple structure, convenient operation and good economy, and can be widely used in the connection and reinforcement of shield segments under complex conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the segment connection reinforcement structure;

[0019] Figure 2 It is a circumferential cross-sectional view of the segment connection reinforcement structure;

[0020] Figure 3 It is a fixed screw connection structure diagram;

[0021] Figure 4 This is the structural diagram of the equipment fixing adapter.

[0022] In the figure: 1 segment body; 101 first connecting segment; 102 second connecting segment; 2 limiter; 201 fixing screw; 202 limiter steel plate; 3 connecting member; 301 nut; 302 washer; 303 connecting steel plate; 4 socket; 401 weld; 5 connecting hole; 6 adapter; 601 nut; 602 fixing hole. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Specific details are explained in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0025] The utility model provides a shield segment connection reinforcement structure, such as Figure 1-Figure 3As shown, it includes a segment body 1, a limiter 2, and a connecting member 3. The segment body 1 includes a first connecting segment 101 and a second connecting segment 102. The limiter 2 includes a fixing screw 201 and a limiter steel plate 202. The connecting member 3 includes a nut 301, a washer 302 and a connecting steel plate 303.

[0026] The working principle of the utility model is as follows: under complex conditions such as shield starting and receiving, connecting channel excavation, tunnel crossing and crossing fault fracture zone, reinforced segments can be used, and in the prefabrication stage of the shield reinforced segments, the limiting parts 2 can be pre-embedded on the flanks of the first connecting segment 101 and the second connecting segment 102.

[0027] The limiting member 2 includes a fixing screw 201 and a limiting steel plate 202. Plug holes 4 are provided at both ends of the limiting steel plate 202. The fixing screw 201 is embedded in the plug holes 4 and fixedly connected by welds 401. Anti-slip teeth and an outward expansion end are provided at the bottom of the fixing screw 201. The lower surface of the limiting steel plate 202 is in close contact with the concrete on the upper surface of the shield segment, which effectively increases the bonding force between the limiting member 2 and the concrete of the first connecting segment 101 and the second connecting segment 102, ensuring the formation of an integrated structure.

[0028] After the shield machine's normal excavation segments are assembled into a ring, the upper portion of the fixing screw 201 and the limiting steel plate 202 are exposed on the flank surfaces of the first connecting segment 101 and the second connecting segment 102 .

[0029] The connecting steel plate 303 fits tightly with the limiting steel plates 202 of the first connecting pipe segment 101 and the second connecting pipe segment 102. Connecting holes 5 are arranged around the connecting steel plate 303. The fixing screws 201 can be embedded in the connecting holes 5. The layout of the connecting holes 5 corresponds one-to-one to the fixing screws 201 of the first connecting pipe segment 101 and the second connecting pipe segment 102.

[0030] Install the washer 302 and the nut 301 on the top of the fixing screw 201. The top of the fixing screw 201 is provided with an external thread, which is tightly engaged with the internal thread of the nut 301. Use a wrench or other tool to tighten the nut 301. Check the tightness of the nut 301 at each hole position to avoid the phenomenon that the nut 301 at the hole position does not press the washer 301.

[0031] The effective reinforcement connection between the adjacent first connecting segments 101 and the second connecting segments 102 of the shield tunnel is achieved. The strength and rigidity of the joints of the shield segments are increased, which can effectively resist the relative displacement between the segments under adverse conditions such as shield starting and receiving, connecting channel excavation, tunnel crossing, and crossing fault fracture zones, ensuring that the shield segments are in a relatively stable state.

[0032] like Figure 4The figure shows a schematic diagram of the structure of the second embodiment of the shield segment connection reinforcement structure of the utility model. Different from the above embodiment, an adapter 6 and a nut 601 are arranged on the outermost side of the fixing screw 201 of the connector 3, and the adapter connects the fixing screw 201 and the electromechanical equipment, providing a fixing hole 602 for the electromechanical equipment in the tunnel, which is convenient for installation and operation.

[0033] The above is a detailed introduction to a shield segment connection reinforcement structure provided by the utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the claims of the utility model.

Claims

1. A shield segment connection reinforcement structure, characterized in that: The invention comprises a pipe segment body (1), a stopper (2), and a connecting piece (3); the pipe segment body (1) comprises a first connecting pipe segment (101) and a second connecting pipe segment (102); the stopper (2) comprises a fixing screw (201) and a stopper steel plate (202); and the connecting piece (3) comprises a nut (301), a washer (302), and a connecting steel plate (303).

2. A shield segment connection reinforcement structure according to claim 1, characterized in that: The segment body (1) is pre-embedded with a limiting component (2), and the limiting component (2) is fully bonded to the concrete of the segment body (1).

3. The shield segment connection reinforcement structure according to claim 1, characterized in that: Insertion holes (4) are provided at both ends of the limiting steel plate (202), and the limiting steel plate (202) is fixedly connected to the fixing screw rod (201) via a weld (401).

4. A shield segment connection reinforcement structure according to claim 1, characterized in that: The bottom of the fixing screw (201) is provided with anti-slip teeth and an outwardly expanded end to increase the bonding force with the concrete of the segment body (1) and ensure a reliable connection.

5. The shield segment connection reinforcement structure according to claim 1, characterized in that: The connecting steel plate (303) is provided with connecting holes (5) around it, and the fixing screws (201) can be embedded in the connecting holes (5).

6. The shield segment connection reinforcement structure according to claim 1, characterized in that: An external thread is arranged on the top of the fixing screw (201), and the external thread of the fixing screw (201) is tightly engaged with the internal thread of the nut (301).

7. The shield segment connection reinforcement structure according to claim 1, characterized in that: A washer (302) is disposed below the nut (301), and the washer (302) is tightly fitted to the side wall of the connecting steel plate (303).

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