CN211524848U - Composite elastic sealing gasket capable of enhancing waterproof performance of segment joint - Google Patents
Composite elastic sealing gasket capable of enhancing waterproof performance of segment joint Download PDFInfo
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- CN211524848U CN211524848U CN201921620019.0U CN201921620019U CN211524848U CN 211524848 U CN211524848 U CN 211524848U CN 201921620019 U CN201921620019 U CN 201921620019U CN 211524848 U CN211524848 U CN 211524848U
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Abstract
The utility model belongs to the technical field of shield engineering, in particular to a composite elastic sealing gasket capable of enhancing the waterproof performance of a segment joint, which comprises a sealing gasket body, wherein the sealing gasket body is provided with an installation end capable of extending into a waterproof groove of a shield segment; one side of the mounting end of the sealing pad body is a water-facing side close to the water-facing surface of the shield segment, and the other side of the mounting end of the sealing pad body is a backwater side close to the backwater surface of the shield segment; the installation of sealing gasket body is served and is corresponded the position of sealing gasket body back of the body water side is equipped with water-swelling rubber. The utility model provides a compound elastic sealing gasket sets up water-swelling rubber through the side of being used for being close to the shield structure section of jurisdiction surface of a back water at sealed the body of filling up, and inside the waterproof ditch inslot sealed the laminating of body at the section of jurisdiction is not closely knit or under the water pressure effect, can effectually block that groundwater enters into the tunnel through the seam, reinforcing section of jurisdiction seam waterproof performance reduces the percolating water, guarantees structure construction and operation safety.
Description
Technical Field
The utility model belongs to the technical field of the shield constructs the engineering, concretely relates to can strengthen compound elastic sealing pad of section of jurisdiction seam waterproof performance.
Background
In recent years, shield tunnels are increasingly widely used to solve urban traffic problems. The structural safety of the shield tunnel is an important guarantee for the normal operation of the shield tunnel, water leakage is the most common and typical shield tunnel structure disease, and in recent years, urban shield tunnels in China are continuously affected by the water leakage disease. The leakage water affects durability of the tunnel structure and internal electrical equipment, and causes other troubles such as uneven settlement and deformation of the tunnel when groundwater supply is insufficient.
The water leakage of the shield tunnel is mainly represented by water leakage at the joint of the pipe pieces, and the common waterproof forms of the joint of the shield tunnel are an ethylene propylene diene monomer elastic sealing gasket, a water-swelling rubber sealing gasket, an outer sponge strip and an inner caulking material. The ethylene propylene diene monomer elastic sealing gasket is a main waterproof measure and is the key for determining the waterproof effect of the shield. In order to enhance the waterproof capability of the ethylene propylene diene monomer elastic sealing gasket, some composite elastic sealing gaskets have appeared at present, but all have some defects; one is to embed water-swellable rubber in the top of the ethylene propylene diene monomer elastic sealing gasket, as shown in fig. 1 and 2, the position of the water-swellable rubber is a main compression area of the sealing gasket, and the water-proofing test simulates dislocation and opening of a duct piece, so that the possibility of leakage in the area is low, and more underground water leaks from the contact surface of the sealing gasket and the rigid groove; the other is that the contact part of the bottom of the ethylene propylene diene monomer elastic sealing gasket and the groove is additionally or internally embedded with the water-swelling rubber, as shown in fig. 3 and 4, the sticking effect of the water-swelling rubber in the laying mode is easy to be influenced, and the water-swelling rubber is easy to tear under the action of water pressure, so that the leakage is caused from the contact surface of the sealing gasket and the hard groove.
Disclosure of Invention
In order to overcome the not enough of above-mentioned prior art existence, the utility model aims at providing a can strengthen the compound elastic sealing pad of section of jurisdiction seam waterproof performance can strengthen the waterproof ability of shield structure section of jurisdiction waterproof slot department, blocks effectively that groundwater enters into inside the tunnel through the seam.
In order to achieve the purpose, the technical scheme of the utility model is a composite elastic sealing gasket capable of enhancing the waterproof performance of the segment joint, which comprises a sealing gasket body, wherein the sealing gasket body is provided with an installation end capable of extending into a waterproof groove of a shield segment; one side of the mounting end of the sealing pad body is a water-facing side close to the water-facing surface of the shield segment, and the other side of the mounting end of the sealing pad body is a backwater side close to the backwater surface of the shield segment; the installation of sealing gasket body is served and is corresponded the position of sealing gasket body back of the body water side is equipped with water-swelling rubber.
Furthermore, the position that the back of the body of sealing pad is close to the installation end is equipped with first recess, meet the embedded setting in of water inflation rubber in the first recess.
Furthermore, the water-swelling rubber is attached to the surface of the back water side of the sealing gasket body.
Furthermore, the sealing gasket body is an ethylene propylene diene monomer rubber sealing gasket.
Furthermore, the composite elastic sealing gasket is formed by synchronously vulcanizing and molding the ethylene propylene diene monomer rubber and the water-swelling rubber at one time.
Further, the mounting end of the sealing gasket body is provided with a second groove with an opening facing the waterproof groove.
Furthermore, a plurality of through holes are formed in the sealing gasket body, the through holes are arranged along the length direction of the sealing gasket body, and the through holes are located on one side, away from the mounting end, of the second groove.
Furthermore, the through holes comprise a plurality of first holes and a plurality of second holes, and the second holes are arranged above the space between every two adjacent first holes.
Furthermore, third holes are arranged above the outer sides of the first holes on two sides.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a compound elastic sealing gasket sets up water-swelling rubber through the side of being used for being close to the shield structure section of jurisdiction surface of a back water at sealed the body of filling up, and inside the waterproof ditch inslot sealed the laminating of body at the section of jurisdiction is not closely knit or under the water pressure effect, can effectually block that groundwater enters into the tunnel through the seam, reinforcing section of jurisdiction seam waterproof performance reduces the percolating water, guarantees structure construction and operation safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a conventional composite elastic gasket with a top embedded therein;
FIG. 2 is a schematic structural view of a conventional composite elastic gasket with a top embedded therein;
FIG. 3 is a schematic structural view of a conventional bottom-embedded composite elastic gasket;
FIG. 4 is a schematic structural view of an existing bottom-attached composite elastic gasket;
fig. 5 is a schematic structural view of a composite elastic sealing gasket capable of enhancing waterproof performance of a segment joint according to an embodiment of the present invention;
fig. 6 is a schematic view of the composite elastic sealing gasket according to the embodiment of the present invention, which can enhance the waterproof performance of the segment joint;
in the figure: 1. the gasket body, 2, meet water inflation rubber, 3, the gasket body and waterproof slot's contact surface, 4, meet the water side, 5, the back of the body water side, 6, second recess, 7, first hole, 8, second hole, 9, third hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 5, an embodiment of the present invention provides a composite elastic sealing gasket capable of enhancing waterproof performance of a segment joint, including a sealing gasket body 1, where the sealing gasket body 1 has an installation end capable of extending into a waterproof groove of a shield segment; one side of the mounting end of the sealing pad body 1 is a water-facing side 4 close to the water-facing surface of the shield segment, and the other side is a backwater side 5 close to the backwater surface of the shield segment; the installation end of the sealing pad body 1 is provided with water-swelling rubber 2 corresponding to the position of the back water side 5 of the sealing pad body. This embodiment sets up water-swelling rubber 2 through being used for being close to the surface of a back water side 5 of shield segment surface at sealed pad body 1, and the waterproof ditch inslot of shield segment seals pad body 1 laminating uncompacted or under the water pressure effect, and inside water-swelling rubber 2 can effectually block groundwater and enter into the tunnel through the seam from the outside, and the waterproof stagnant water performance of reinforcing shield segment seam reduces the percolating water, guarantees structure construction and operation safety.
In this embodiment, the compound mode of the sealing gasket body 1 and the water-swellable rubber 2 can adopt an embedded form or a surface-mounted form according to the structural form of the sealing gasket body 1. As an implementation mode, the position of the backwater side 5 of the sealing gasket body 1, which is close to the mounting end, is provided with a first groove, and the water-swelling rubber 2 is embedded in the first groove. In another embodiment, the water-swellable rubber 2 is attached to the surface of the back side 5 of the gasket body 1.
Specifically, the gasket body 1 of the present embodiment is an epdm gasket, and the composite elastic gasket is formed by vulcanizing epdm and the water-swellable rubber 2 simultaneously in one step. Preferably, meet water-swelling rubber 2 and be located the relative position department of the surface of the back of the water lateral wall of the 5 sides of the side of the back of the water side of sealed pad body 1 and waterproof slot, at the assembly in-process of shield structure section of jurisdiction, sealed pad body 1 is installed in the waterproof slot of shield structure section of jurisdiction, meet water-swelling rubber 2 of the side of the back of the water 5 and can play the waterproof effect of replenishment, work as under the water pressure effect, sealed pad body 1 is by the 5 extrusion deformation of the side of the back of the water side 4, meet water-swelling rubber 2 and hug closely the surface of the back of the water lateral wall of waterproof slot, prevent that.
In this embodiment, the water-swellable rubber 2 is designed to be a solid structure, and the epdm is designed to be a porous structure according to the waterproof capability of the elastic gasket and the construction assembling stress requirement. Specifically, the mounting end of the gasket body 1 is provided with a second groove 6 with an opening facing the waterproof groove, the second groove 6 is in a door arch shape, and as shown in fig. 5, the 4 second grooves 6 are symmetrically arranged relative to a connecting line of upper and lower middle points of the cross section of the gasket body 1. The sealing gasket body 1 is also internally provided with a plurality of through holes, the through holes are arranged along the length direction of the sealing gasket body 1 and are positioned on one side of the second groove 6 departing from the mounting end, and the through holes are symmetrically arranged relative to a connecting line of the middle points of the upper side and the lower side of the cross section of the sealing gasket body 1; specifically, the through holes comprise a plurality of first holes 7 and a plurality of second holes 8, and the second holes 8 are arranged above the space between every two adjacent first holes 7; and third holes 9 are arranged above the outer sides of the first holes 7 on the two sides. As shown in fig. 5, three first holes 7, two second holes 8 and two third holes 9 are provided in the gasket body 1 of this embodiment, the two second holes 8 are respectively located above the middle between the first hole 7 and the first holes 7 on both sides thereof, the middle first hole 7 is symmetrically arranged with respect to a connecting line of upper and lower middle points of the cross section of the gasket body 1, and the third holes 9 are located outside the first holes 7 on both sides. Preferably, the cross section of the first hole 7 is triangular, the cross section of the second hole 8 is inverted triangular, the first hole 7 and the second hole 8 have the same size, and the bottom of the second hole 8 is at least partially inserted between the two first holes 7; the cross section of the third hole 9 is irregularly oval, and the size of the third hole 9 is smaller than that of the first hole 7 and the second hole 8; the cross-sectional corners of the first, second and third holes 7, 8, 9 are chamfered.
The embodiment of the utility model also provides a shield segment waterproof structure, which comprises two shield segments, and the waterproof grooves of the two shield segments are arranged oppositely; the composite elastic sealing gaskets are arranged in the waterproof grooves, and the composite elastic sealing gaskets arranged oppositely are mutually extruded and sealed. The mounting end of the composite elastic sealing gasket is attached to the bottom of the waterproof groove, and the water-swelling rubber 2 is positioned on the back water side of the waterproof groove; in the assembling process of the shield segments, when the compaction degree of the sealing gasket body 1 at the waterproof groove is not enough, underground water permeates from the bottom of the sealing gasket and the sealing gasket groove under the action of pressure, and the water-swelling rubber 2 on the backwater side 5 of the sealing gasket body 1 can play a role in supplementing waterproof; and when under water pressure, even the extrusion of the inside deformation of sealing pad body 1, the sealed packing compaction of the leeward side 5 of waterproof slot is inseparabler, as shown in fig. 6, meets water inflation rubber 2 can be better the waterproof effect of consolidation.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A composite elastic sealing gasket capable of enhancing the waterproof performance of a segment joint comprises a sealing gasket body, wherein the sealing gasket body is provided with an installation end capable of extending into a waterproof groove of a shield segment; one side of the mounting end of the sealing pad body is a water-facing side close to the water-facing surface of the shield segment, and the other side of the mounting end of the sealing pad body is a backwater side close to the backwater surface of the shield segment; the method is characterized in that: the installation of sealing gasket body is served and is corresponded the position of sealing gasket body back of the body water side is equipped with water-swelling rubber.
2. The composite elastic gasket for reinforcing the waterproof performance of a segment joint according to claim 1, wherein: the position that the leeward side of sealing pad body is close to the installation end is equipped with first recess, meet the embedded setting in of water inflation rubber in the first recess.
3. The composite elastic gasket for reinforcing the waterproof performance of a segment joint according to claim 1, wherein: the water-swelling rubber is attached to the surface of the back water side of the sealing gasket body.
4. The composite elastic gasket for reinforcing the waterproof performance of a segment joint according to claim 1, wherein: the sealing gasket body is an ethylene propylene diene monomer rubber sealing gasket.
5. The composite elastic gasket for reinforcing the waterproof performance of a segment joint according to claim 1, wherein: the composite elastic sealing gasket is formed by synchronously vulcanizing ethylene propylene diene monomer rubber and the water-swelling rubber at one time.
6. The composite elastic gasket for reinforcing the waterproof performance of a segment joint according to claim 1, wherein: and the mounting end of the sealing gasket body is provided with a second groove with an opening facing the waterproof groove.
7. The composite elastic gasket for reinforcing the waterproof performance of a segment joint as claimed in claim 6, wherein: the sealing gasket is characterized in that a plurality of through holes are formed in the sealing gasket body, the through holes are arranged along the length direction of the sealing gasket body, and the through holes are located on one side, deviating from the mounting end, of the second groove.
8. The composite elastic gasket for reinforcing the waterproof performance of a segment joint according to claim 7, wherein: the through holes comprise a plurality of first holes and a plurality of second holes, and the second holes are arranged above the space between every two adjacent first holes.
9. The composite elastic gasket for reinforcing the waterproof performance of a segment joint according to claim 8, wherein: and third holes are formed in the upper parts of the outer sides of the first holes on the two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921620019.0U CN211524848U (en) | 2019-09-27 | 2019-09-27 | Composite elastic sealing gasket capable of enhancing waterproof performance of segment joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921620019.0U CN211524848U (en) | 2019-09-27 | 2019-09-27 | Composite elastic sealing gasket capable of enhancing waterproof performance of segment joint |
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| CN211524848U true CN211524848U (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921620019.0U Active CN211524848U (en) | 2019-09-27 | 2019-09-27 | Composite elastic sealing gasket capable of enhancing waterproof performance of segment joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934789A (en) * | 2022-06-02 | 2022-08-23 | 中国建筑第二工程局有限公司 | Assembled station combined type waterproof sealing gasket |
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2019
- 2019-09-27 CN CN201921620019.0U patent/CN211524848U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934789A (en) * | 2022-06-02 | 2022-08-23 | 中国建筑第二工程局有限公司 | Assembled station combined type waterproof sealing gasket |
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