CN210033477U - Novel combined type waterproof sealing gasket for shield tunnel - Google Patents
Novel combined type waterproof sealing gasket for shield tunnel Download PDFInfo
- Publication number
- CN210033477U CN210033477U CN201920781742.0U CN201920781742U CN210033477U CN 210033477 U CN210033477 U CN 210033477U CN 201920781742 U CN201920781742 U CN 201920781742U CN 210033477 U CN210033477 U CN 210033477U
- Authority
- CN
- China
- Prior art keywords
- polyurethane
- groove
- sealing gasket
- water
- shield tunnel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a novel combined type waterproof sealing pad of shield tunnel, including the sealing pad body, the sealing pad body is kept away from shield structure section of jurisdiction one side and is formed polyurethane groove, it has high density water-swelling polyurethane to inlay in the polyurethane groove, the tank bottom in polyurethane groove and the high density water-swelling polyurethane lower extreme between form the structure of stinging each other that increases the cohesive force. The utility model discloses select for use the water-swelling polyurethane of high density that expansibility and durability are better, greatly increased the sealed durability and the anti water pressure ability of filling up of elastic sealing, the high density water-swelling polyurethane adoption of simultaneously sealing pad body and area antenna stings the formula each other and is connected, has strengthened the cohesive force between water-swelling polyurethane of high density and the sealing pad body, has avoided two kinds of materials to take place the phenomenon of peeling off and has taken place. The invention can effectively improve the durability and the water pressure resistance of the elastic sealing gasket, and has wide application prospect.
Description
Technical Field
The utility model belongs to tunnel and underground structure engineering field, concretely relates to novel combined type waterproof gasket of shield tunnel.
Background
The waterproof gasket is a main waterproof mode for the joints of the tunnel segments in the shield method at home and abroad at present. The domestic common elastic sealing gasket is mainly formed by compounding porous ethylene propylene diene monomer rubber and water-swellable rubber. The waterproof mechanism is as follows: after the pipe piece is compacted, the water is sealed by the elastic restoring force of the compressed elastic material in the waterproof groove and the expansion stress of the water-swelling rubber.
However, for the conventional porous ethylene propylene diene monomer and water-swellable rubber composite elastic sealing gasket, the swelling resin is easy to separate out and age under the long-term compression action of the water-swellable rubber, the swelling multiplying power is reduced after repeated swelling, and the adhesive force between the water-swellable rubber and the ethylene propylene diene monomer is not easy to peel off, so that the waterproof performance of the duct piece joint sealing gasket is reduced under the long-term use working condition, and even the phenomenon of short-term failure occurs, so that the waterproof failure of the duct piece structure is caused.
Disclosure of Invention
The utility model discloses an overcome traditional porous type EPDM and meet the water inflation rubber compound elastic sealing pad and meet the water inflation rubber easy ageing and EPDM and meet water inflation rubber easy peeling off and the section of jurisdiction seam waterproof performance shortcoming that leads to reduces under long-term compression effect, its purpose provides a shield tunnel novel combined type waterproof sealing pad.
The technical scheme of the utility model is that: the utility model provides a novel combined type waterproof sealing pad of shield tunnel, includes the gasket body, the gasket body is kept away from shield section of jurisdiction one side and is formed the polyurethane groove, it has the water inflation polyurethane of high density to inlay in the polyurethane groove, the tank bottom in polyurethane groove and the water inflation polyurethane lower extreme of high density form the structure of stinging each other that increases the cohesive force between the polyurethane lower extreme.
Preferably, the inter-engaging structure includes a contact at a lower end of the high-density water-swellable polyurethane and a groove at a groove bottom of the polyurethane, the contact being inserted into the groove.
Preferably, the grooves are through grooves in the length direction, and the grooves and the contacts are in one-to-one correspondence.
Preferably, the contact is elongated.
Preferably, the contacts are transversely and uniformly distributed at the lower end of the high-density water-swellable polyurethane.
Preferably, the sealing gasket body is arranged on the bottom surface of the sealing gasket groove of the shield segment.
Preferably, the polyurethane groove is a through dovetail groove.
Preferably, the sealing pad body is ethylene propylene diene monomer.
Preferably, the sealing pad body and the high-density water-swellable polyurethane are vulcanized and formed at one time synchronously.
The utility model discloses select for use the water-swelling polyurethane of high density that expansibility and durability are better, greatly increased the sealed durability and the anti water pressure ability of filling up of elastic sealing, the high density water-swelling polyurethane adoption of simultaneously sealing pad body and area antenna stings the formula each other and is connected, has strengthened the cohesive force between water-swelling polyurethane of high density and the sealing pad body, has avoided two kinds of materials to take place the phenomenon of peeling off and has taken place. The invention can effectively improve the durability and the water pressure resistance of the elastic sealing gasket, and has wide application prospect.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
fig. 2 is a top view of another embodiment of the present invention;
wherein:
1 sealing gasket body 2 high-density water-swellable polyurethane
3-contact 4-shield segment sealing gasket groove bottom surface
5 grooves 6 polyurethane grooves.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples:
as shown in fig. 1-2, a novel combined type waterproof gasket for shield tunnel, including sealed pad body 1, sealed pad body 1 keeps away from shield section of jurisdiction one side and forms polyurethane groove 6, it has water inflation polyurethane 2 to inlay high density in the polyurethane groove 6, it stings the structure each other that formation increases the cohesive force between the tank bottom of polyurethane groove 6 and the water inflation polyurethane 2 lower extreme of high density.
The inter-engaging structure includes contacts 3 at the lower end of the high-density water-swellable urethane 2 and a groove 5 at the bottom of a urethane groove 6, and the contacts 3 are inserted into the groove 5.
The grooves 5 are through grooves in the length direction, and the grooves 5 and the contacts 3 are in one-to-one correspondence.
The contact 3 is strip-shaped.
The contacts 3 are transversely and uniformly distributed at the lower end of the high-density water-swelling polyurethane 2.
The sealing gasket body 1 is arranged on the bottom surface 4 of the sealing gasket groove of the shield segment.
The polyurethane groove 6 is a through dovetail groove.
The sealing pad body 1 is made of ethylene propylene diene monomer.
The sealing pad body 1 and the high-density water-swelling polyurethane 2 are vulcanized and formed at one time synchronously.
The number of the contacts 3 at the lower end of the high-density water-swellable urethane 2 may be an odd number as shown in fig. 1, and the number of the contacts 3 at the lower end of the high-density water-swellable urethane 2 may be an even number as shown in fig. 2.
The cross-sectional profile of the gasket body 1 is not limited and the prior art may be used.
The polyurethane groove 6 and the groove 5 are communicated, and the polyurethane groove 6 and the groove 5 are integrally combined to form a comb-like structure.
The above description of the preferred embodiments is merely exemplary of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, or improvement without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a novel combined type waterproof sealing pad of shield tunnel, includes sealing pad body (1), its characterized in that: keep away from shield structure section of jurisdiction one side in sealing pad body (1) and form polyurethane groove (6), it has water inflation polyurethane (2) to inlay high density in polyurethane groove (6), the tank bottom and the high density of polyurethane groove (6) are met and are formed the structure of stinging each other that increases the cohesive force between water inflation polyurethane (2) lower extreme.
2. The novel composite waterproof sealing gasket for the shield tunnel according to claim 1, wherein: the mutual meshing structure comprises contacts (3) at the lower end of the high-density water-swelling polyurethane (2) and a groove (5) at the groove bottom of a polyurethane groove (6), and the contacts (3) are inserted into the groove (5).
3. The novel composite waterproof sealing gasket for the shield tunnel according to claim 2, wherein: the grooves (5) are through grooves in the length direction, and the grooves (5) and the contacts (3) are in one-to-one correspondence.
4. The novel composite waterproof sealing gasket for the shield tunnel according to claim 3, wherein: the contact (3) is strip-shaped.
5. The novel composite waterproof sealing gasket for the shield tunnel according to claim 4, wherein: the contacts (3) are transversely and uniformly distributed at the lower end of the high-density water-swelling polyurethane (2).
6. The novel composite waterproof sealing gasket for the shield tunnel according to claim 5, wherein: the sealing gasket body (1) is arranged on the bottom surface (4) of the sealing gasket groove of the shield segment.
7. The novel composite waterproof sealing gasket for the shield tunnel according to claim 6, wherein: the polyurethane groove (6) is a through dovetail groove.
8. The novel composite waterproof sealing gasket for the shield tunnel according to claim 7, wherein: the sealing pad body (1) is made of ethylene propylene diene monomer.
9. The novel composite waterproof sealing gasket for the shield tunnel according to claim 8, wherein: the sealing pad body (1) and the high-density water-swelling polyurethane (2) are vulcanized and formed at one time synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920781742.0U CN210033477U (en) | 2019-05-28 | 2019-05-28 | Novel combined type waterproof sealing gasket for shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920781742.0U CN210033477U (en) | 2019-05-28 | 2019-05-28 | Novel combined type waterproof sealing gasket for shield tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210033477U true CN210033477U (en) | 2020-02-07 |
Family
ID=69344695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920781742.0U Expired - Fee Related CN210033477U (en) | 2019-05-28 | 2019-05-28 | Novel combined type waterproof sealing gasket for shield tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210033477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720543A (en) * | 2020-06-12 | 2020-09-29 | 天津大学 | Compound elasticity rubber seal structure |
-
2019
- 2019-05-28 CN CN201920781742.0U patent/CN210033477U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720543A (en) * | 2020-06-12 | 2020-09-29 | 天津大学 | Compound elasticity rubber seal structure |
| CN111720543B (en) * | 2020-06-12 | 2024-04-26 | 天津大学 | Composite elastic rubber sealing ring structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210033477U (en) | Novel combined type waterproof sealing gasket for shield tunnel | |
| CN106704740B (en) | Corrugated serrated compound gasket | |
| CN112343625B (en) | Joint sealing gasket | |
| CN218894942U (en) | Sealing ring with flame retardant structure | |
| CN214834347U (en) | Anti-skid PVC floor | |
| CN114934789A (en) | Assembled station combined type waterproof sealing gasket | |
| CN212079338U (en) | Elastic sealing gasket | |
| CN105065665A (en) | Novel anti-corrosion rubber sealing gasket | |
| CN104672524A (en) | Formula of water swelling rubber | |
| CN209742923U (en) | Waterproof sealing strip for tunnel | |
| CN211371263U (en) | D-shaped sealing strip with elastic telescopic structure inside | |
| CN212563241U (en) | Long-distance wear-resistant shield tail brush | |
| CN210949871U (en) | Novel skeleton oil blanket | |
| CN210217778U (en) | Extrusion seal type sealing gasket for caulking of shield tunnel segment | |
| CN208996744U (en) | A kind of novel combined waterproof sealing gasket of shield tunnel | |
| CN210714731U (en) | Section of jurisdiction waterproof sealing pad and shield structure section of jurisdiction waterproof construction of antifriction | |
| CN205738881U (en) | A kind of comb teeth shape for covered floating roof tank seals | |
| CN201187449Y (en) | Seal strip used for swirl vacuum pump swirl tray top | |
| CN218322647U (en) | Rubber sealing element for drainage gate | |
| CN218716855U (en) | Ethylene propylene diene monomer elastic sealing gasket | |
| CN219198114U (en) | Novel anti-aging sealing strip | |
| CN221032667U (en) | Composite sealing gasket and structure for waterproof joint of socket joint shield segment | |
| CN214467013U (en) | Strong sealing rubber waterstop | |
| CN211202869U (en) | Concave waterproof rubber ring capable of being installed quickly | |
| CN213331786U (en) | Operation side bottom compresses tightly jar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20200528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |