A device for preventing misalignment of a shield segment

Abstract

The utility model discloses a device for preventing misalignment of shield segment, including the tunnel inside multiloop shield pipe, every ring shield pipe all includes multiloop segment, and the segment on every adjacent two rings is concave and convex cooperation at the lateral wall, the inner wall of segment is equipped with a plurality of hand hole groove, and the multiple adjacent segments among every ring shield pipe are fixed through the spacing I -steel, the both ends of spacing I -steel extend to hand hole groove, the outside of hand hole groove is provided with the inclined plane, be equipped with the connecting hole on the inclined plane, the both ends of spacing I -steel bottom are all equipped with the connecting plate, be equipped with the through -hole with connecting hole correspondence on the connecting plate, this device for preventing misalignment of shield segment can guarantee construction quality precision, avoid pipe joint misalignment, and is suitable for widely used.

Description

Technical Field

[0001] This utility model relates to the field of shield tunnel segment construction technology, and in particular to a device for preventing misalignment of shield tunnel segments. Background Technology

[0002] During shield tunneling, the most important factors for inspecting the overall quality of the shield tunnel are the quality of the segment formation, whether it is damaged, and whether there are misalignments.

[0003] Currently, tunnel boring machine (TBM) development is rapid, and segment misalignment is prevented primarily by adjusting tunneling and assembly parameters. Most power utility tunnel TBMs have relatively small inner diameters, typically around 4 meters, making it difficult to control the assembly quality of segments with tenons and mortises. The assembly operator's skill level is the most crucial factor in assessing the overall quality of the TBM. Furthermore, currently, segments with tenons and mortises are prone to misalignment due to the lack of reinforcement at the tenons, leaving them vulnerable. Damage to the tenons can easily lead to segment misalignment.

[0004] Although tunnel boring machine (TBM) construction is relatively mature, segment misalignment is inevitable during the tunneling process. In severe cases, misalignment can lead to segment damage, water leakage, and serious losses. Therefore, there is an urgent need for a device that can prevent TBM segment misalignment. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems by providing a device for preventing misalignment of tunnel segments, which can ensure the accuracy of construction quality and avoid misalignment of tunnel sections.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a device for preventing misalignment of tunnel segments, comprising a multi-ring tunnel shield pipe inside the tunnel, each ring of the tunnel shield pipe comprising multiple segments, the segments on each adjacent pair of rings having a concave-convex fit at the side wall, the inner wall of the segments being provided with multiple handhole grooves, and multiple adjacent segments in each ring of the tunnel shield pipe being fixed together by limiting I-beams, the two ends of the limiting I-beams extending into the handhole grooves.

[0007] Preferably, the outer side of the hand hole groove is provided with a sloping surface, the sloping surface is provided with a connecting hole, and both ends of the bottom of the limiting I-beam are provided with connecting plates, the connecting plates are provided with through holes corresponding to the connecting holes.

[0008] Preferably, the connecting plate is welded and fixed to the limiting I-beam, and the connecting plate is inclined downward.

[0009] Preferably, the bottom surface of the inclined connecting plate is in contact with the slope surface, and after contact, the connecting plate and the pipe segment are fixedly connected by bolts.

[0010] Preferably, the tube segment has an arc-shaped protrusion on one side and an assembly groove that mates with the protrusion on the other side.

[0011] Preferably, one end of the tube is provided with a first groove and the other end is provided with a second groove, and a positioning rod is provided in the first groove.

[0012] Preferably, after two adjacent segments are joined, the positioning rod falls into the second groove.

[0013] This utility model discloses a device for preventing misalignment of tunnel segments in a shield tunnel. The device includes multiple rings of shield tunneling pipes within the tunnel. Each ring of the shield tunneling pipe comprises multiple segments. The segments on adjacent rings have a concave-convex fit at the sidewall. The inner wall of each segment has multiple handhole grooves. Multiple adjacent segments in each ring of the shield tunneling pipe are fixed together by limiting H-beams. Both ends of the limiting H-beams extend into the handhole grooves. A sloping surface is provided on the outer side of the handhole grooves, and a connecting hole is provided on the sloping surface. Connecting plates are provided at both ends of the bottom of the limiting H-beams, and the connecting plates have through holes corresponding to the connecting holes. Compared with the prior art, this device for preventing misalignment of tunnel segments has the beneficial effect of ensuring construction quality accuracy and avoiding segment misalignment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the shield tunneling pipe in this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the tube segment in this utility model.

[0016] Figure 3 This is a schematic diagram of the limiting I-beam in this utility model.

[0017] Figure 4 This is a schematic diagram showing the unfolded connection between the limiting I-beam and the multi-ring adjacent segments in this utility model.

[0018] Figure 5 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0019] Figure 6 This utility model Figure 2 A magnified structural diagram at point B in the middle.

[0020] In the diagram: 1. Shield tunnel pipe; 2. Segment; 21. Handhole groove; 22. Slope surface; 23. Connecting hole; 24. Protrusion; 25. First groove; 26. Second groove; 27. Positioning rod; 3. Limiting I-beam; 31. Connecting plate; 32. Through hole. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] Please refer to Figure 1-6 A device for preventing misalignment of tunnel segments includes a multi-ring shield tunnel 1 inside the tunnel. Each ring of the shield tunnel 1 includes multiple segments 2. The segments 2 on each adjacent pair of rings are fitted together at the sidewalls. The inner wall of each segment 2 is provided with multiple handhole grooves 21. Multiple adjacent segments 2 in each ring of the shield tunnel 1 are fixed together by limiting I-beams 3. The two ends of the limiting I-beams 3 extend into the handhole grooves 21.

[0023] Please refer to this again. Figure 1 The diagram shows a three-ring shield tunnel 1 with staggered segments 2 on it. After staggered arrangement, adjacent segments 2 are connected by limiting H-beams 3 (e.g., Figure 4 As shown in the figure, these three segments 2 are tightly connected together, thereby avoiding misalignment caused by segment detachment and ensuring construction quality and precision.

[0024] Specifically, the outer side of the hand hole groove 21 is provided with a slope surface 22, and the slope surface 22 is provided with a connecting hole 23. Both ends of the bottom of the limiting I-beam 3 are provided with connecting plates 31, and the connecting plates 31 are provided with through holes 32 corresponding to the connecting holes 23.

[0025] In addition, the connecting plate 31 is welded and fixed to the limiting I-beam 3, and the connecting plate 31 is inclined downward.

[0026] The purpose of the inclined setting of the connecting plate 31 is to ensure that the bottom surface fits with the slope surface 22. After fitting, the through hole 32 and the connecting hole 23 coincide. After coinciding, the connecting plate 31 and the pipe segment 2 are fixedly connected by bolts. After fixing, multiple pipe segments are located at the same height and no misalignment will occur.

[0027] To ensure the installation accuracy of the tunnel boring machine (TBM), an arc-shaped protrusion 24 is provided on one side of the tunnel segment 2, and an assembly groove (not shown in the figure) is provided on the other side to match the protrusion 24.

[0028] In other words, during the construction of the multi-ring shield tunnel 1, adjacent segments are fitted with a tongue and groove through protrusions 24 and assembly grooves to ensure construction quality.

[0029] That is, the setting of protrusion 24 and assembly groove can realize the mating of the rings with the tenon and mortise.

[0030] In addition, one end of the tube 2 is provided with a first groove 25 and the other end is provided with a second groove 26. The first groove 25 is provided with a positioning rod 27, and the surface area of ​​the second groove 26 is larger than that of the first groove 25.

[0031] Since the surface area of ​​the second groove 26 is larger than that of the first groove 25, after two adjacent segments 2 are joined, the positioning rod 27 and the first groove 25 both fall into the second groove 26 to ensure the installation accuracy of the segments in the same ring.

[0032] In this embodiment, the tenon and mortise structure (protrusion 24 and assembly groove) is plain concrete and has no internal reinforcement; it is easy to break during construction, and the breakage can easily lead to misalignment of the pipe segments; while the setting of the limiting I-beam 3 can connect multiple pipe segments 2 with a large span, and can ensure that multiple pipe segments are at the same height, thereby avoiding disjointing and misalignment.

[0033] Understandably, the length of the limiting I-beam 3 can be increased to reinforce and limit multiple segments.

[0034] The specific construction steps are as follows: First, install the first ring (shield tunnel segment 2) segment 2, and position and connect the first ring segment segment through the positioning rod 27; then install the second ring segment 2 through the protrusion 24 and the assembly groove, and so on. When the limiting I-beam 3 can span multiple segments 2, the limiting I-beam 3 is fixed inside the segments, thereby reinforcing multiple adjacent segments to prevent misalignment (e.g., Figure 4 (as shown) After reinforcement, concrete grout is injected into the gap between the shield tube and the tunnel. After the whole structure solidifies, the limiting I-beam 3 is disassembled to meet the requirements for subsequent recycling.

[0035] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A device for preventing misalignment of tunnel lining segments, comprising a multi-ring shield tunnel within the tunnel, characterized in that, Each ring of the shield tube includes multiple segments. The segments on each pair of adjacent rings are fitted together with concave and convex joints on the sidewalls. The inner wall of each segment is provided with multiple handhole grooves. Multiple adjacent segments in each ring of the shield tube are fixed together by limiting H-beams. The two ends of the limiting H-beams extend into the handhole grooves. The outer side of the hand hole groove is provided with a sloping surface, and a connecting hole is provided on the sloping surface. Both ends of the bottom of the limiting I-beam are provided with connecting plates, and the connecting plates are provided with through holes corresponding to the connecting holes. The connecting plate is welded and fixed to the limiting I-beam, and the connecting plate is tilted downwards; The bottom surface of the inclined connecting plate is in contact with the slope surface, and after the contact plate is in contact with the pipe segment, it is fixedly connected to the pipe segment by bolts; The tube segment has an arc-shaped protrusion on one side and an assembly groove for matching the protrusion on the other side. One end of the tube is provided with a first groove and the other end is provided with a second groove, and a positioning rod is provided in the first groove; After two adjacent segments are joined together, the positioning rod falls into the second groove.

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