Fixing structure and fixing system

Abstract

The utility model discloses a fixing structure and a fixing system, which are used for connecting a shield segment and a corbel, the fixing structure comprises a screw and a corrugated pipe, the shield segment is provided with a connecting hole, the corrugated pipe is inserted into the connecting hole, colloid is injected into the connecting hole, and the screw is connected with the corrugated pipe. One end of the screw rod is inserted into the corrugated pipe, and the other end of the screw rod is connected to the bracket. Through the application of the fixing structure and the fixing system, the fixing structure and the fixing system are particularly suitable for fixed connection of the temporary steel corbel and the shield segment in a tunnel, the requirements for the sizes such as the installation distance are low, and the influence on a concrete base material of the shield segment is low; the device is simple in structure, convenient to install, high in reliability and low in use cost.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a fixing structure and a fixing system. Background Art

[0002] Currently, shield technology is widely used in road traffic and municipal pipeline construction projects. It is common to deploy a large number of prefabricated shield segments on site to serve as a barrier structure within the tunnel to bear the load from the tunnel wall. At the same time, to ensure stable installation of the shield segments, the shield segments are often fixedly connected to the corresponding brackets. In existing technologies, such as the existing Chinese authorized patent CN202420415521.2, it is generally considered to use self-expanding bottom anchor bolts to achieve the fixed connection between the two.

[0003] However, the application of this self-expanding bottom anchor also has certain disadvantages. On the one hand, the installation of self-expanding bottom anchors often requires large margins and spacing, and there are certain usage restrictions in the connection between shield segments and corbels with limited areas. On the other hand, the expansion of the blades of the self-expanding bottom anchors will also cause certain damage to the concrete base material of the shield segments. In addition, the cost of self-expanding bottom anchors is high and the cost is not easy to control. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of the present utility model is to provide a fixing structure for connecting shield segments and corbels, including: a screw and a bellows, a connecting hole is provided on the shield segment, the bellows is inserted into the connecting hole, a colloid is injected into the connecting hole, one end of the screw is inserted into the bellows, and the other end of the screw is connected to the corbel.

[0005] In another preferred embodiment, the outer wall of the corrugated tube has a plurality of protrusions and a plurality of depressions alternately arranged in sequence along the axial direction.

[0006] In another preferred embodiment, an opening is formed on the outer wall of the corrugated tube.

[0007] In another preferred embodiment, the opening is extended along the length direction of the corrugated tube.

[0008] In another preferred embodiment, the shield segment has a first connecting surface, the connecting hole is opened on the first connecting surface, the corbel has a second connecting surface, and the first connecting surface and the second connecting surface are arranged in contact with each other.

[0009] In another preferred embodiment, the first connecting surface and the second connecting surface are both inclined relative to the horizontal direction.

[0010] In another preferred embodiment, it further comprises: a nut, which is mounted on the other end of the screw rod and is used to fix the screw rod and the corbel.

[0011] In another preferred embodiment, the screw is a full-thread screw.

[0012] In another preferred embodiment, the colloid is anchoring glue.

[0013] The purpose of the present utility model is also to provide a fixing system, comprising a plurality of fixing structures described in any one of the above, wherein a plurality of connecting holes are opened on the shield segment, and a screw and a bellows are provided in each connecting hole.

[0014] Due to the adoption of the above technical solution, the present invention has the following positive effects compared with the prior art:

[0015] Through the application of the utility model, a fixing structure and a fixing system are provided, which are particularly suitable for the fixed connection of temporary steel brackets and shield segments in tunnels. The requirements for dimensions such as installation spacing are low, and the impact on the concrete substrate of the shield segments is low. In addition, the utility model has a simple structure, convenient installation, high reliability and low cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a fixing system of the present invention;

[0017] Figure 2 This is a schematic diagram of a corrugated pipe with a fixed structure according to the present invention.

[0018] In the attached figure:

[0019] 1. Shield segment; 2. Corbel; 3. Fixing structure; 31. Screw; 32. Bellows; 11. Connection hole; 4. Colloid; 321. Protrusion; 322. Recess; 323. Opening; 12. First connection surface; 21. Second connection surface; 5. Nut. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "front", "back", "horizontal", and "vertical" 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 do not indicate or imply that the device or component referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0022] It should be noted that the terms “horizontal” and “vertical” in the present invention are used to describe a rough positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0023] like Figure 1 and Figure 2 The figure shows a preferred embodiment of a fixing structure 3 for connecting a shield segment 1 and a corbel 2. The fixing structure 3 includes a screw 31 and a bellows 32. A connecting hole 11 is provided on the shield segment 1. The bellows 32 is inserted into the connecting hole 11. A colloid 4 is injected into the connecting hole 11. One end of the screw 31 is inserted into the bellows 32, and the other end of the screw 31 is connected to the corbel 2. Furthermore, the combination of the screw 31, bellows 32, and colloid 4 as the fixing structure 3 realizes a fixed connection between the shield segment 1 and the corbel 2. The injection of the colloid 4 ensures that the embedded bellows 32 and one end of the screw 31 are firmly connected in the connecting hole 11 without damaging the internal structure of the shield segment 1. After the colloid 4 solidifies and forms, the other end of the screw 31 is connected to the corbel 2.

[0024] Furthermore, as a preferred embodiment, the outer wall of the bellows 32 has a plurality of protrusions 321 and a plurality of recesses 322 arranged alternately in the axial direction. Furthermore, the protrusions 321 and the recesses 322 are arranged in a smooth arc-shaped structure along the axial section.

[0025] Furthermore, as a preferred embodiment, an opening 323 is formed on the outer wall of the bellows 32. Furthermore, the interior of the bellows 32 is radially connected to the interior of the connecting hole 11 through the opening 323, and at least allows the colloid 4 to pass through.

[0026] Furthermore, as a preferred embodiment, the provision of the opening 323 can at least enable the bellows 32 to undergo appropriate deformation in terms of its outer diameter to match the inner wall size of the connecting hole 11 .

[0027] Further, as a preferred embodiment, the opening 323 is preferably provided along the radial direction of the bellows 32 and passes through one side of the bellows 32 . The opening 323 preferably has an extension dimension along the circumference of the bellows 32 , which is at least less than one quarter of the circumference of the bellows 32 .

[0028] Furthermore, as a preferred embodiment, the opening 323 is extended along the length direction of the bellows 32. Furthermore, the length direction is preferably parallel to the axial direction of the bellows 32.

[0029] Furthermore, as a preferred embodiment, the opening 323 is provided throughout the entire axial length of the bellows 32 .

[0030] Furthermore, as a preferred embodiment, the shield segment 1 has a first connecting surface 12, on which a connecting hole 11 is formed, and the corbel 2 has a second connecting surface 21, with the first connecting surface 12 and the second connecting surface 21 being arranged in contact with each other. Furthermore, after the fixing structure 3 is installed, the first connecting surface 12 and the second connecting surface 21 are preferably arranged in close contact with each other.

[0031] Furthermore, as a preferred embodiment, the first connecting surface 12 and the second connecting surface 21 are both inclined relative to the horizontal direction. Furthermore, the first connecting surface 12 preferably has a downward inclination, and the second connecting surface 21 preferably has an upward inclination, and the degree of inclination of the first connecting surface 12 matches the degree of inclination of the second connecting surface 21.

[0032] Furthermore, as a preferred embodiment, it further includes: a nut 5, which is installed at the other end of the screw rod 31 and is used to fix the screw rod 31 and the bracket 2. Furthermore, preferably, after the colloid 4 solidifies, the bracket 2 is installed to the other end of the screw rod 31, and the other end is locked by the nut 5.

[0033] Furthermore, as a preferred embodiment, the nut 5 can be pre-embedded in the second connecting surface 21 of the corbel 2; or the end of the corbel 2 close to the screw 31 has a bent portion, and the outside of the bent portion is formed with the above-mentioned second connecting surface 21, and the other end of the screw 31 passes through the bent portion, and the nut 5 is tightened and pressed against the inner side of the bent portion.

[0034] Furthermore, as a preferred embodiment, the screw 31 is preferably a full-thread screw 31 .

[0035] Furthermore, as a preferred embodiment, the colloid 4 is preferably a rebar-anchoring glue.

[0036] Further, as a preferred embodiment, the corbel 2 is preferably a temporary steel corbel 2 .

[0037] Furthermore, as a preferred embodiment, the corbel 2 may be provided with a triangular weight-reducing hole.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the implementation manner and protection scope of the present invention.

[0039] The present invention also has the following implementation methods based on the above:

[0040] A fixing system of a preferred embodiment includes a plurality of fixing structures 3 described in any one of the above, a plurality of connecting holes 11 are opened on the shield segment 1, and a screw 31 and a bellows 32 are provided in each connecting hole 11.

[0041] In a further embodiment of the present invention, the plurality of connection holes 11 are sequentially arranged at least along the vertical direction on the first connection surface 12. Furthermore, the plurality of connection holes 11 are preferably arranged on the first connection surface 12 in a rectangular array.

[0042] In a further embodiment of the present invention, the specific implementation steps of the present invention are as follows:

[0043] Step S1: drilling the shield segment 1 to form a suitable number of connection holes 11;

[0044] Step S2: Cleaning the interior of the connecting hole 11;

[0045] Step S3: inserting the bellows 32 into the connecting hole 11;

[0046] Step S4: injecting anchoring glue into the connection hole 11 where the corrugated tube 32 is installed;

[0047] Step S5: inserting one end of the screw 31 into the inner side of the bellows 32;

[0048] Step S6: After the anchor glue solidifies, the other end of the screw rod 31 is fixedly connected to the corbel 2 .

[0049] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixing structure for connecting shield segments and brackets, characterized in that: include: A screw and a bellows, a connecting hole is provided on the shield segment, the bellows is inserted into the connecting hole, a colloid is injected into the connecting hole, one end of the screw is inserted into the bellows, and the other end of the screw is connected to the corrugated leg.

2. The fixing structure according to claim 1, characterized in that: The outer wall of the corrugated tube has a plurality of protrusions and a plurality of recesses arranged alternately in sequence along the axial direction.

3. The fixing structure according to claim 1, characterized in that: An opening is formed on the outer wall of the corrugated tube.

4. The fixing structure according to claim 3, characterized in that: The opening is extended along the length direction of the corrugated tube.

5. The fixing structure according to claim 1, wherein: The shield segment has a first connecting surface, the connecting hole is opened on the first connecting surface, the bracket has a second connecting surface, and the first connecting surface and the second connecting surface are arranged in contact with each other.

6. The fixing structure according to claim 5, characterized in that: The first connecting surface and the second connecting surface are both arranged to be inclined relative to a horizontal direction.

7. The fixing structure according to claim 1, characterized in that: Also includes: A nut is installed on the other end of the screw rod, and the nut is used to fix the screw rod and the bracket.

8. The fixing structure according to claim 1, characterized in that: The screw is a full-thread screw.

9. The fixing structure according to claim 1, characterized in that: The colloid is rebar-anchoring glue.

10. A fixing system comprising a plurality of fixing structures according to any one of claims 1 to 9, characterized in that: A plurality of connecting holes are provided on the shield segment, and a screw rod and a corrugated pipe are arranged in each connecting hole.

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