Shield tunnel segment circular seam structure with good waterproof effect

Abstract

The utility model belongs to the technical field of shield tunnel waterproofing, in particular to a shield tunnel segment circular seam structure with good waterproof effect, which comprises a bottom mounting seat, an insert and a fixing ring, the insert is arranged on the peripheral end face of the bottom mounting seat, and the fixing ring is arranged at the side end of the insert. Through the arrangement of the bottom mounting seat, the supporting ring surface, the drainage canal and the plastic sealing layer, after the structure is mounted in the tunnel, the supporting ring surface needs to be inserted into the preliminary fixing slot through the insertion block, and in the using process of the structure, the supporting ring surface is of an integral structure, so that the supporting ring surface cannot be damaged. Seepage water in the tunnel is discharged downwards through the arc faces on the two sides of the supporting ring face, the seeping water can be separated by the drainage canal in the middle of the supporting ring face and is discharged from the openings in the two sides through the annularly-designed drainage canal, and compared with a traditional multi-structure sewing design, the situation of seam water seepage is greatly reduced through the scheme; and a hollow barrier structure is built inside, so that a better waterproof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunnel waterproofing, in particular to a shield tunnel segment annular seam structure with good waterproofing effect. Background Art

[0002] The girth joint structure of shield tunnel segments is a crucial component of shield tunnel construction. Its primary function is to prevent groundwater infiltration and ensure tunnel structural stability. The girth joint structure typically consists of a rubber waterstop and fixings. The rubber waterstop adopts a V-shaped structure, with the upper and lower flanges and webs designed to ensure an effective waterproof barrier at the girth joint.

[0003] The existing technology has the following deficiencies: The prior art publication number CN103206230A states, "A waterproof structure for a shield tunnel segment," that "the structure is characterized in that two parallel circumferential waterproof strips are provided between the inner and outer walls of the shield segment, and a plurality of vertical circumferential waterproof strips perpendicular to the circumferential waterproof strips are provided between the two circumferential waterproof strips, which divide the two circumferential waterproof strips into a plurality of waterproof partitions."

[0004] The above structure is designed into several waterproof partitions. This method can effectively prevent groundwater from entering the tunnel through longitudinal joints and circumferential joints. However, since the structure is composed of traditional multi-gap joints, there are many surface gaps, and water seepage in the tunnel usually occurs at the top or the left and right sides of the upper end. Therefore, waterproofing of this part is more important. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a shield tunnel segment annular seam structure with good waterproof effect, which solves the current problems.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a shield tunnel segment annular seam structure with good waterproof effect, comprising a bottom mounting seat, an insert, and a fixing ring, wherein the insert is arranged on the outer end surface of the bottom mounting seat, and the fixing ring is arranged on the side end of the insert;

[0007] The upper end of the bottom mounting seat is also provided with a supporting annular surface;

[0008] The bottom mounting seat further comprises a plastic sealing layer and a preliminary fixing slot. The plastic sealing layer is fixedly mounted on the inner wall end surface of the bottom mounting seat. The preliminary fixing slot is opened inside both ends of the bottom mounting seat.

[0009] As a preferred technical solution of the present invention, the support annular surface further includes a drainage channel and an insert block. The drainage channel is opened inside the support annular surface, and the insert block is fixedly connected to the bottom ends of both sides of the support annular surface.

[0010] As a preferred technical solution of the present invention, the drainage channel is an overall semi-annular arc surface structure, which has the same shape as the supporting annular surface, and rectangular openings extending outward are provided at the ends of both sides of the drainage channel.

[0011] As a preferred technical solution of the present invention, four groups of fixing rings are provided, which penetrate through the insert and surround the outer end surface of the supporting ring surface and the bottom mounting seat.

[0012] As a preferred technical solution of the present invention, the bottom mounting seat establishes a movable connection relationship with the supporting annular surface by inserting the insert block into the preliminary fixing slot.

[0013] As a preferred technical solution of the present invention, the lengths of the support annular surface and the bottom mounting seat are not limited and can be customized and adjusted according to the actual installation conditions of the tunnel.

[0014] As a preferred technical solution of the present invention, the plastic sealing layers are provided in three groups and are equidistantly distributed in a circular shape.

[0015] Compared with the existing technology, the utility model provides a shield tunnel segment annular seam structure with good waterproof effect, which has the following beneficial effects:

[0016] A shield tunnel segment annular seam structure with good waterproof effect is provided by providing a bottom mounting seat, a supporting annular surface, a drainage channel and a plastic sealing layer. After the structure is installed inside the tunnel, it is necessary to ensure that the supporting annular surface is inserted into the preliminary fixing slot through the insert block. During use of the structure, since the supporting annular surface adopts an integral structure, the seepage water in the tunnel is discharged downward through the arc surfaces on both sides of the supporting annular surface. After long-term use, if water seepage occurs inside the supporting annular surface, the seeped water will be isolated by the drainage channel in the middle of the supporting annular surface and discharged from the openings on both sides through the annular drainage channel;

[0017] The above settings and processes can make the structure have the following beneficial effects:

[0018] By dividing the overall structure into a support ring surface and a bottom mounting seat, the gaps at the joints can be effectively reduced. Through the cooperation of the support ring surface and the drainage channel, the outer layer of water vapor and the water that penetrates the surface can be completely discharged. Compared with the traditional multi-structure stitching design, this solution greatly reduces the situation of water seepage in the gaps, and a hollow barrier structure is established inside, which has a better waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the split structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the preliminary fixing slot and insert block position of the utility model.

[0023] In the figure: 1. bottom mounting seat; 101. plastic sealing layer; 102. preliminary fixing slot; 2. insert; 3. fixing ring; 4. support ring surface; 401. drainage channel; 402. insert block. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] A shield tunnel segment annular seam structure with good waterproof effect, comprising a bottom mounting seat 1, an insert 2, and a fixing ring 3, wherein the insert 2 is arranged on the outer end surface of the bottom mounting seat 1, and the fixing ring 3 is arranged on the side end of the insert 2;

[0026] A supporting annular surface 4 is also provided at the upper end of the bottom mounting seat 1;

[0027] The bottom mounting seat 1 further includes a plastic sealing layer 101 and a preliminary fixing slot 102 . The plastic sealing layer 101 is fixedly mounted on the inner wall end surface of the bottom mounting seat 1 , and the preliminary fixing slot 102 is opened inside both ends of the bottom mounting seat 1 .

[0028] In this embodiment, the support annular surface 4 further includes a drainage channel 401 and an insert 402. The drainage channel 401 is provided inside the support annular surface 4, and the insert 402 is fixedly connected to the bottom ends of both sides of the support annular surface 4. The drainage channel 401 has an overall semi-annular arc surface structure, and its shape is the same as that of the support annular surface 4. A rectangular opening extending outward is provided at the end of each side of the drainage channel 401.

[0029] Specifically, such as Figure 2 and Figure 3 As shown, both ends of the drainage channel 401 are open outwards and maintain a downward slanting position, so that the water inside the drainage channel 401 can be quickly discharged, forming a complete drainage channel;

[0030] In this embodiment, four sets of fixing rings 3 are provided, which penetrate the insert 2 and surround the outer end surfaces of the support ring surface 4 and the bottom mounting seat 1. The bottom mounting seat 1 is inserted into the preliminary fixing slot 102 by the insert block 402 to establish a movable connection relationship with the support ring surface 4.

[0031] Specifically, such as Figure 1 and Figure 4 As shown, the insert 2 is maintained in a fixed position by four sets of fixing rings 3 passing through the insert 2, and the fixing rings 3 are arranged on the periphery of the support annular surface 4 to maintain the overall integrity of the support annular surface 4;

[0032] In this embodiment, the lengths of the supporting annular surface 4 and the bottom mounting seat 1 are not limited and are customized and adjusted according to the actual installation conditions of the tunnel; three groups of plastic sealing layers 101 are provided and are equidistantly distributed in an annular shape.

[0033] The working principle and use process of the present invention: After the structure is installed inside the tunnel, it is necessary to ensure that the support ring surface 4 is inserted into the preliminary fixing slot 102 through the insert block 402. During the use of the structure, since the support ring surface 4 adopts an integral structure, the seepage water in the tunnel is discharged downward through the arc surfaces on both sides of the support ring surface 4. After long-term use, if water seepage occurs inside the support ring surface 4, the seeped water will be blocked by the drainage channel 401 in the middle of the support ring surface 4, and discharged from the openings on both sides through the annular drainage channel 401.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A shield tunnel segment annular seam structure with good waterproof effect, comprising a bottom mounting seat (1), an insert (2), and a fixing ring (3), wherein the insert (2) is arranged on the outer end surface of the bottom mounting seat (1), and the fixing ring (3) is arranged on the side end of the insert (2), characterized in that: The upper end of the bottom mounting seat (1) is further provided with a supporting annular surface (4); The bottom mounting seat (1) further comprises a plastic sealing layer (101) and a preliminary fixing slot (102), wherein the plastic sealing layer (101) is fixedly mounted on the inner wall end surface of the bottom mounting seat (1), and the preliminary fixing slot (102) is opened inside both ends of the bottom mounting seat (1).

2. The shield tunnel segment annular seam structure with good waterproof effect according to claim 1, characterized in that: The supporting annular surface (4) further comprises a drainage channel (401) and an insert (402), wherein the drainage channel (401) is opened inside the supporting annular surface (4), and the insert (402) is fixedly connected to the bottom ends of both sides of the supporting annular surface (4).

3. The shield tunnel segment annular seam structure with good waterproof effect according to claim 2, characterized in that: The drainage channel (401) is in the form of a semi-circular arc surface as a whole, and its shape is the same as that of the supporting annular surface (4), and rectangular openings extending outwards are provided at the ends of both sides of the drainage channel (401).

4. The shield tunnel segment annular seam structure with good waterproof effect according to claim 1, characterized in that: The fixing rings (3) are provided in four groups and penetrate the insert (2) and surround the supporting annular surface (4) and the peripheral end surface of the bottom mounting seat (1).

5. The shield tunnel segment annular seam structure with good waterproof effect according to claim 1, characterized in that: The bottom mounting seat (1) is inserted into the preliminary fixing slot (102) via the insert block (402) to establish a movable connection relationship with the supporting annular surface (4).

6. The shield tunnel segment annular seam structure with good waterproof effect according to claim 1, characterized in that: The lengths of the supporting annular surface (4) and the bottom mounting seat (1) are not limited and can be customized and adjusted according to the actual installation conditions of the tunnel.

7. The shield tunnel segment annular seam structure with good waterproof effect according to claim 1, characterized in that: The plastic sealing layers (101) are provided in three groups and are distributed in an annular shape at equal intervals.

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