Composite shield segment waterproof structure

Abstract

According to the composite shield segment waterproof structure, in the waterproof structure, a segment groove is concavely formed in a shield segment; the duct piece groove is coated with the glue layer; the sealing gasket is fixed on the adhesive layer in a bonding manner; and the sealing gasket is coated with the water-swelling water-stopping adhesive layer. According to the waterproof structure, gaps between the sealing gaskets are reduced, and the waterproof performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunnel waterproof construction, in particular to a composite shield segment waterproof structure. Background Art

[0002] Whether it is road traffic, railway traffic or municipal engineering, tunnel engineering is indispensable. Shield tunneling is relatively common and the construction technology is mature. However, due to the particularity of underground engineering, waterproofing of shield tunnels has always been a difficult and important task in engineering construction.

[0003] Traditional shield tunnel waterproofing mostly utilizes a single waterproof structure of installing waterproof sealing pads on the segments. However, due to the possibility of loose pasting during the construction process or cracking of the sealing pads during the segment assembly process, the segment joints may leak. To address this problem, the utility model adopts a composite waterproof structure.

[0004] The above information disclosed in the background technology section is only used to enhance the understanding of the background of the present invention and therefore may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0005] The utility model aims to provide a composite shield segment waterproof structure, which improves waterproofness by applying a layer of glue in the segment groove to install and fix the sealing gasket, and applying a layer of water-swelling water-stopping glue on the surface of the sealing gasket.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a composite shield segment waterproof structure comprising:

[0008] A segment groove, which is recessed in the shield segment;

[0009] A glue layer, which is coated on the groove of the tube segment;

[0010] a sealing gasket, which is adhesively fixed to the adhesive layer;

[0011] A water-swellable waterproof adhesive layer is coated on the sealing pad.

[0012] In the composite shield segment waterproof structure, a pair of segment grooves are recessed on the shield segment in opposite directions.

[0013] In the composite shield segment waterproof structure, a pair of segment grooves are symmetrical relative to the water-swellable waterproof adhesive layer.

[0014] In the composite shield segment waterproof structure, the segment groove has a horizontal bottom.

[0015] In the composite shield segment waterproof structure, the thickness of the sealing gasket is greater than the depth of the segment groove.

[0016] The composite shield segment waterproof structure also includes connecting bolts for assembling the shield segments.

[0017] In the composite shield segment waterproof structure, the connecting bolts are symmetrically distributed on the shield segment.

[0018] In the composite shield segment waterproof structure, the sealing pad has a flat outer surface, and the water-swellable waterproofing adhesive is coated on the outer surface.

[0019] In the composite shield segment waterproof structure, the water-swellable waterproof adhesive layer is a horizontal layer.

[0020] In the composite shield segment waterproof structure, the composite shield segment waterproof structure is a symmetrical structure.

[0021] In the above technical scheme, the utility model provides a composite shield segment waterproof structure, which has the following beneficial effects: after the sealing pads between the segments of the composite shield segment waterproof structure are installed, groundwater enters between the sealing pads, and the water-stopping glue can swell when it encounters water, reducing the gaps between the sealing pads and blocking further infiltration of groundwater. The water-swelling water-stopping glue can be used as a friction-reducing material, which can effectively reduce the friction coefficient between the waterproof sealing pads of the segments, thereby effectively alleviating the misalignment phenomenon and significantly improving the waterproof ability of the shield tunnel. It is easy to operate, has strong applicability, and can be highly optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a structural schematic diagram of the composite shield segment waterproof structure of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] like Figure 1 As shown, in one embodiment, a composite shield segment waterproof structure of the utility model includes:

[0033] A segment groove 1, which is recessed in the shield segment;

[0034] A glue layer 2, which is coated on the tube segment groove 1;

[0035] A sealing gasket 3, which is adhesively fixed to the adhesive layer 2;

[0036] The water-swellable waterproof adhesive layer 4 is coated on the sealing pad 3 .

[0037] In a preferred embodiment of the composite shield segment waterproof structure, a pair of segment grooves 1 are recessed in opposite directions on the shield segment.

[0038] In a preferred embodiment of the composite shield segment waterproof structure, a pair of segment grooves 1 are symmetrical with respect to the water-swellable waterproof adhesive layer 4.

[0039] In a preferred embodiment of the composite shield segment waterproof structure, the segment groove 1 has a horizontal bottom.

[0040] In a preferred embodiment of the composite shield segment waterproof structure, the thickness of the sealing gasket 3 is greater than the depth of the segment groove 1.

[0041] In a preferred embodiment of the composite shield segment waterproof structure, it also includes connecting bolts for assembling the shield segments.

[0042] In a preferred embodiment of the composite shield segment waterproof structure, the connecting bolts are symmetrically distributed on the shield segment.

[0043] In a preferred embodiment of the composite shield segment waterproof structure, the sealing pad 3 has a flat outer surface, and the water-swellable waterproofing adhesive is coated on the outer surface.

[0044] In a preferred embodiment of the composite shield segment waterproof structure, the water-swellable waterproof adhesive layer 4 is a horizontal layer.

[0045] In a preferred embodiment of the composite shield segment waterproof structure, the composite shield segment waterproof structure is a symmetrical structure.

[0046] In one embodiment, before installing the waterproof seal 3 of the combined shield segment waterproof structure, the segment groove 1 should be cleaned first, and then a glue layer 2 such as chloroprene phenolic glue should be applied. The seal 3 such as EPDM rubber should be cut to a suitable length and installed along the segment groove 1. The segment should be transported into the hole, and a layer of polyurethane water-swellable waterproofing glue layer 4 should be applied on the surface of the EPDM rubber seal 3 before assembly. The segments should be assembled and bolted.

[0047] Finally, it should be noted that the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present application.

[0048] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A composite shield segment waterproof structure, characterized in that: These include, A segment groove, which is recessed in the shield segment; A glue layer, which is coated on the groove of the tube segment; a sealing gasket, which is adhesively fixed to the adhesive layer; A water-swellable waterproof adhesive layer is coated on the sealing pad.

2. A composite shield segment waterproof structure according to claim 1, characterized in that: A pair of segment grooves are recessed in opposite directions on the shield segment.

3. A composite shield segment waterproof structure according to claim 1, characterized in that: A pair of the segment grooves are symmetrical relative to the water-swellable waterproof adhesive layer.

4. A composite shield segment waterproof structure according to claim 1, characterized in that: The segment groove has a horizontal bottom.

5. The composite shield segment waterproof structure according to claim 1, characterized in that: The thickness of the sealing gasket is greater than the depth of the tube segment groove.

6. The composite shield segment waterproof structure according to claim 1, characterized in that: It also includes connecting bolts for assembling shield segments.

7. A composite shield segment waterproof structure according to claim 6, characterized in that: The connecting bolts are symmetrically distributed on the shield segments.

8. The composite shield segment waterproof structure according to claim 1, characterized in that: The sealing pad has a flat outer surface, and the water-swellable waterproofing adhesive is coated on the outer surface.

9. The composite shield segment waterproof structure according to claim 1, characterized in that: The water-swellable waterproof adhesive layer is a horizontal layer.

10. The composite shield segment waterproof structure according to claim 1, characterized in that: The composite shield segment waterproof structure is a symmetrical structure.

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