Concrete shield segment repairing and reinforcing structure

Abstract

The utility model provides a concrete shield segment repairing and reinforcing structure which comprises a shield segment, a rectangular groove is formed in a damaged notch in the edge of one side of the shield segment, a reinforcing steel bar component is placed in the rectangular groove and comprises a plurality of V-shaped reinforcing steel bars and transverse reinforcing steel bars, and the V-shaped reinforcing steel bars and the transverse reinforcing steel bars are fixed through binding wires. A plurality of V-shaped steel bars are transversely arranged in the rectangular groove; the transverse steel bars are transversely arranged in the rectangular grooves, and positioning grooves used for containing the two ends of the transverse steel bars are symmetrically formed in the two ends of the rectangular grooves. Concrete is poured in the grooves and the positioning grooves, the outer sides of the grooves are covered with sealing plate assemblies, the sealing plate assemblies are fixed to the shield segment through screws, the V-shaped steel bars are matched with the transverse steel bars, the pressure bearing capacity and the structural strength of the side edges of the segment are effectively improved, and the phenomenon that the side edges of the segment are damaged again due to extrusion is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of shield segments, and in particular relates to a concrete shield segment repair and reinforcement structure. Background Art

[0002] The shield segment is an assembly component used in shield tunnel construction. It is used to construct the lining structure of the tunnel. It is the innermost barrier of the tunnel and bears the role of resisting soil pressure, groundwater pressure and some special loads. During the transportation of the shield segment to the underground, the edges of the segments on both sides are prone to collision damage, resulting in gaps at the edges. If the segments are replaced directly, the construction cost is high, so it is necessary to repair the damaged parts. The traditional concrete pouring repair method has low structural strength and is prone to looseness and collapse due to extrusion. Chinese patent document: CN201720739245.5 discloses a repair and reinforcement structure for shield segments. The application repair and reinforcement structure is through vertically staggered grooves at the damaged position, and steel bars are placed in the grooves, and finally reinforced by pouring concrete. This repair structure is suitable for repairing the surface damage of the segment, but it cannot play a good reinforcement effect for the damage repair of the edge of the segment. After the repaired segment is assembled, it is still easy to cause edge damage due to mutual extrusion between the segments. Utility Model Content

[0003] In view of the above problems, the utility model discloses a concrete shield pipe segment repair and reinforcement structure, which can improve the structural strength of the pipe segment edge repair position.

[0004] The specific technical solutions are as follows:

[0005] A concrete shield segment repair and reinforcement structure comprises a shield segment, wherein a rectangular groove is provided at a damaged notch on one side edge of the shield segment, wherein one side edge of the rectangular groove is open, wherein a steel bar component is placed in the rectangular groove, wherein the steel bar component comprises a plurality of V-shaped steel bars and transverse steel bars, wherein the V-shaped steel bars and the transverse steel bars are fixed by binding wires, wherein a plurality of V-shaped steel bars are arranged transversely and placed in the rectangular groove, wherein one end of the V-shaped steel bar extends to one side of the opening of the rectangular groove, and both sides of the other end of the V-shaped steel bar are bent to provide support feet, wherein the support feet are arranged in contact with an inner wall of one side of the rectangular groove; wherein the transverse steel bar is transversely provided in the rectangular groove, and positioning grooves for accommodating the two ends of the transverse steel bars are symmetrically provided at both ends of the rectangular groove; wherein concrete is poured in the groove and the positioning groove, and the outer side of the groove is covered with a sealing plate assembly, and the sealing plate assembly is fixed to the shield segment by screws.

[0006] Furthermore, the support legs are bent toward both sides, and the bending direction of the support legs is parallel to the inner wall of the rectangular groove.

[0007] Furthermore, the length of the transverse reinforcement is adapted to the length between the left and right positioning grooves.

[0008] Furthermore, the sealing plate assembly includes a top sealing plate arranged on the top of the shield segment and a side sealing plate arranged on the side of the shield segment. The adjacent sides of the top sealing plate and the side sealing plate are both provided with inclined surfaces, and the inclined surfaces between the top sealing plate and the side sealing plate are pressed and fitted against each other.

[0009] Furthermore, the top sealing plate is arranged in an arc-shaped structure and is adapted to the curvature of the surface of the shield segment.

[0010] The beneficial effects of the utility model are embodied in:

[0011] The utility model adopts a covering type to open a rectangular groove at the damaged part of the pipe segment, and a steel bar component is placed in the groove and concrete is poured to achieve the effect of repairing the damaged part. The steel bar component adopts V-shaped steel bars in combination with transverse steel bars, which can effectively improve the pressure bearing capacity and structural strength of the side of the pipe segment, thereby avoiding the side of the pipe segment from being damaged again due to extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 It is an enlarged schematic diagram of the shield segment repair and reinforcement structure in the utility model.

[0014] Figure 3 It is a side view of the shield segment in the utility model.

[0015] Figure 4 It is an end cross-sectional view of the shield segment in the utility model.

[0016] Shield segment 1, rectangular groove 2, positioning groove 21, notch 3, reinforcement member 4, V-shaped reinforcement 41, support foot 411, transverse reinforcement 42, binding wire 43, side sealing plate 5, inclined surface 51, top sealing plate 6. DETAILED DESCRIPTION

[0017] In order to make the technical solution of the utility model clearer, the utility model is further described below in conjunction with the accompanying drawings. Any equivalent replacement of the technical features of the technical solution of the utility model and any solution derived from conventional reasoning shall fall within the protection scope of the utility model. The fixed connection and fixed setting mentioned in the utility model are all common connection methods in the mechanical field, including welding, bolt and nut connection, and screw connection.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0019] like Figure 1-4 As shown, the present embodiment provides a concrete shield segment repair and reinforcement structure, including a shield segment 1, a rectangular groove 2 is opened at the damaged notch 3 on one side edge of the shield segment 1, the rectangular groove 2 covers the damaged notch 3 as a whole, one side edge of the rectangular groove 2 is open, a steel bar component 4 is placed in the rectangular groove 2, the steel bar component 4 includes a plurality of V-shaped steel bars 41 and transverse steel bars 42, the plurality of V-shaped steel bars 41 are arranged transversely in the rectangular groove 2, one end of the V-shaped steel bar 41 extends to one side of the opening of the rectangular groove 2, and both sides of the other end of the V-shaped steel bar 41 are bent to provide a support foot portion 4 11. The support foot 411 is arranged in close contact with the inner wall of one side of the rectangular groove 2; the transverse steel bar 42 is arranged horizontally in the rectangular groove 2, and the transverse steel bar 42 is placed above the V-shaped steel bar 41, and the connection between the V-shaped steel bar 41 and the transverse steel bar 42 is fixed by a binding wire 43; positioning grooves 21 for accommodating the two ends of the transverse steel bar 42 are symmetrically opened at both ends of the rectangular groove 2, and the length of the transverse steel bar 42 is adapted to the length between the left and right positioning grooves 21, and the two ends of the transverse steel bar 42 are placed in the positioning groove 21, thereby playing a positioning role and preventing the steel bar component 4 from being displaced during concrete pouring.

[0020] Concrete is poured in the groove and the positioning groove 21, and the outer side of the groove is covered with a sealing plate assembly, which is fixed to the shield segment 1 by screws.

[0021] In this embodiment, the sealing plate assembly includes a top sealing plate 6 arranged on the top of the shield segment 1 and a side sealing plate 5 arranged on the side of the shield segment. The top sealing plate 6 and the side sealing plate 5 are both provided with an inclined surface 51 on one side adjacent to the top sealing plate 6, and the inclined surfaces 51 between the top sealing plate 6 and the side sealing plate 5 are pressed and fitted against each other, and the top sealing plate 6 is arranged in an arc-shaped structure and is adapted to the curvature of the surface of the shield segment.

[0022] In this embodiment, a layer of polyurethane waterproof coating is applied on the surface of the rectangular groove 2 and the surface of the damaged notch 3 to improve the waterproof effect.

[0023] In this embodiment, the support leg portion 411 is bent toward both sides, and the bending direction of the support leg portion 411 is parallel to the inner wall of the rectangular groove 2, so that the V-shaped steel bar 41 can play a longitudinal supporting role.

[0024] When repairing the shield segment, first use a cutting machine to cut a rectangular groove 2 at the notch 3 on the edge of the segment, and the rectangular groove 2 covers the notch 3 as a whole. Then, symmetrically cut positioning grooves 21 at both ends of the rectangular groove 2, and then place the steel member 4 into the rectangular groove 2, so that the V-shaped support foot 411 is against one side of the rectangular groove 2, and at the same time, the two ends of the transverse steel bar 42 are against the positioning groove 21 for positioning, and then the side sealing plate 5 is fixed to the side of the segment by expansion bolts, and then concrete is poured into the rectangular groove 2, and finally, the upper sealing plate is covered, so that one side of the upper sealing plate is in contact with the inclined surface 51 on one side of the side sealing plate 5, and then fixed by expansion bolts. After the concrete reaches the predetermined strength, the sealing plate assembly can be removed.

[0025] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A concrete shield segment repair and reinforcement structure, comprising a shield segment (1), characterized in that: A rectangular groove (2) is provided at a damaged notch (3) on one side edge of a shield segment (1), one side edge of the rectangular groove (2) is open, a steel bar component (4) is placed in the rectangular groove (2), the steel bar component (4) comprises a plurality of V-shaped steel bars (41) and transverse steel bars (42), the V-shaped steel bars (41) and the transverse steel bars (42) are fixed by binding wires (43), a plurality of V-shaped steel bars (41) are arranged transversely and placed in the rectangular groove (2), one end of the V-shaped steel bars (41) extends to the rectangular groove ( 2) On one side of the opening, both sides of the other end of the V-shaped steel bar (41) are bent to form support feet (411), and the support feet (411) are arranged in close contact with the inner wall of one side of the rectangular groove (2); the transverse steel bar (42) is arranged transversely in the rectangular groove (2), and positioning grooves (21) for accommodating the two ends of the transverse steel bar (42) are symmetrically opened at both ends of the rectangular groove (2); concrete is poured in the groove and the positioning groove (21), and the outer side of the groove is covered with a sealing plate assembly, and the sealing plate assembly is fixed to the shield segment by screws.

2. The concrete shield segment repair and reinforcement structure according to claim 1, characterized in that: The support foot portion (411) is bent toward both sides, and the bending direction of the support foot portion (411) is parallel to the inner wall of the rectangular groove (2).

3. The concrete shield segment repair and reinforcement structure according to claim 1, characterized in that: The length of the transverse steel bar (42) is adapted to the length between the left and right positioning grooves (21).

4. The concrete shield segment repair and reinforcement structure according to claim 1, characterized in that: The sealing plate assembly comprises a top sealing plate (6) arranged at the top of the shield segment and a side sealing plate (5) arranged at the side of the shield segment, and the top sealing plate (6) and the side sealing plate (5) are both provided with an inclined surface (51) on one side adjacent to each other, and the inclined surfaces (51) between the top sealing plate (6) and the side sealing plate (5) are pressed against each other.

5. The concrete shield segment repair and reinforcement structure according to claim 4, characterized in that: The top sealing plate (6) is arranged in an arc-shaped structure and is adapted to the curvature of the surface of the shield segment.

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