CN214944292U - Segment joint sealing gasket suitable for super-buried-depth shield tunnel - Google Patents
Segment joint sealing gasket suitable for super-buried-depth shield tunnel Download PDFInfo
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- CN214944292U CN214944292U CN202120104886.XU CN202120104886U CN214944292U CN 214944292 U CN214944292 U CN 214944292U CN 202120104886 U CN202120104886 U CN 202120104886U CN 214944292 U CN214944292 U CN 214944292U
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Abstract
The utility model provides a section of jurisdiction seam sealing pad suitable for surpass buried depth shield tunnel, including the gasket body, be provided with a plurality of first circular holes on the gasket body, the gasket body is cellular structure promptly, and the horizontal equidistance in gasket body bottom is provided with a plurality of arcs, and gasket body top surface is provided with the water-swelling layer. The water-swelling layer is arranged on the top surface of the sealing gasket body in a coating mode. The utility model adopts the principle of extrusion type sealing and water swelling sealing, the sealing gasket is in an extrusion state, and the sealing gasket is deformed through the honeycomb-shaped hole structure of the sealing gasket to generate internal stress to play a role in waterproof effect, and the hole adopts a circular hole, so that the maximum rebound internal stress can be obtained in the compression process to improve the waterproof effect; and when in the work progress because the proruption reason, when sealed pad surface takes place local infiltration, the cladding formula that sealed pad surface set up meets water expansion layer and meets water and take place the volume expansion, plays the secondary with water stagnant water and strengthens water-proof effects.
Description
Technical Field
The utility model belongs to the technical field of the waterproof in shield structure method tunnel, especially, relate to a section of jurisdiction seam sealing pad suitable for super buried depth shield tunnel.
Background
In the prior art, with the rapid development of the traffic construction in China, large-scale cross-river and cross-sea highway tunnels, railway tunnels, electric power tunnels and subway tunnels in various regions are all accelerated and planned and promoted, and the diameter and the burial depth of a shield are continuously refreshed. The waterproof performance of the shield tunnel is related to the normal performance of the using function of the tunnel and the service life of the tunnel. The shield tunnel water proofing comprises segment self-waterproofing, seam waterproofing and hand hole waterproofing. Wherein, a large amount of ring direction between the section of jurisdiction, vertical seam are waterproof weakest position, also are the most important link of waterproof design.
Along with the more and more planning of subways and intercity lines, a plurality of shield tunnels need to penetrate through original pipelines, and partial projects need to penetrate through mountain bodies, the burial depth of the partial projects far exceeds the conventional design, for example, the burial depth of the conventional subway shield tunnels is more than 20-30 m, the burial depth of the river-crossing tunnel is at most 80m at present, the burial depth of the mountain body shield tunnels is more than 200m, the segment wall is thin, the condition of a multi-channel waterproof system is not provided, the waterproof capability of the conventional sealing gasket is difficult to meet the requirement, and a segment sealing gasket capable of meeting the high-pressure condition in the shield tunnels with the excessive burial depth is needed.
Chinese patent with patent publication No. CN210033477U discloses a novel combined waterproof gasket for shield tunnel, including the gasket body, the gasket body is kept away from shield section of jurisdiction one side and is formed the polyurethane groove, has inlayed the water-swelling polyurethane of high density in the polyurethane groove, and the tank bottom in polyurethane groove and the water-swelling polyurethane of high density form between the lower extreme that increases the mutual structure of stinging of cohesive force. The high-density water-swellable polyurethane is selected, so that the durability and the water pressure resistance of the elastic sealing gasket are improved; however, the cross-sectional profile of the gasket body structure described in this patent is not limited, and only by using the prior art, the maximum rebound internal stress cannot be obtained during the compression process, and the waterproof effect cannot be further improved.
Therefore, in order to solve the above background problems, it is considered to be socially desirable to develop a segment joint sealing gasket suitable for a super-buried shield tunnel.
Disclosure of Invention
The to-be-solved problem of the utility model is to provide a section of jurisdiction seam sealing gasket suitable for super buried depth shield tunnel has improved water-proof effects greatly and can play the secondary with water stagnant water and strengthen water-proof effects.
In order to solve the technical problem, the utility model discloses a technical scheme is: the segment joint sealing gasket suitable for the shield tunnel with the ultra-buried depth comprises a sealing gasket body, wherein a plurality of first circular holes are formed in the sealing gasket body, namely the sealing gasket body is of a honeycomb structure, a plurality of arc-shaped grooves are transversely and equidistantly formed in the bottom of the sealing gasket body, a water-swelling layer is arranged on the surface of the top of the sealing gasket body, two sides of the sealing gasket body protrude outwards, second circular holes are formed in protruding parts of two sides of the sealing gasket body, and the wall thickness between the first circular holes is 1.5-2.5 mm; the wall thickness between the first circular hole and the second circular hole is 1.5-2.5 mm; the wall thickness between the second round holes is 1.5-2.5 mm. The water-swelling layer is arranged on the top surface of the sealing gasket body in a coating mode. The water-swellable layer is made of water-swellable polyurethane material. The material of the sealing gasket body is ethylene propylene diene monomer.
As shown in fig. 2 or 3, in the using process, the gasket body is arranged at the deformation joints at two sides, when the gasket body is in the extrusion state, the first circular holes and the second circular holes on the honeycomb-shaped gasket body deform to generate internal stress to play a role in waterproofing, and the largest rebound internal stress can be obtained in the compression process to improve the waterproofing effect; simultaneously, when because the proruption reason in the work progress, sealed pad body surface takes place local infiltration, the water-swelling layer of the cladding formula that the upper surface of sealing pad body set up meets water and takes place the volume expansion, and the water-swelling layer of meeting of both sides extrudes each other and seals, plays "with the secondary of water stagnant water" and strengthens water-proof effects.
The utility model has the advantages and positive effects that: due to the fact that the principle of extrusion type sealing and water swelling sealing is adopted, after the sealing gasket is in an extrusion state, internal stress is generated through deformation of a honeycomb-shaped hole structure of the sealing gasket to achieve a waterproof effect, and the hole is a circular hole, so that the maximum rebound internal stress can be obtained in the compression process to improve the waterproof effect; and when in the work progress because the proruption reason, when sealed pad surface takes place local infiltration, the cladding formula that sealed pad surface set up meets water expansion layer and meets water and take place the volume expansion, plays the secondary with water stagnant water and strengthens water-proof effects.
Drawings
Fig. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic structural view of the present invention arranged at the deformation joint;
fig. 3 is a schematic structural diagram of the utility model after the deformation joint is compressed.
In the figure:
1. sealing gasket body 2, first circular hole 3 and water-swelling layer
4. Second round hole 5, arc groove
Detailed Description
As shown in fig. 1, the utility model relates to a section of jurisdiction seam sealing gasket suitable for surpassing buried depth shield tunnel, including sealing gasket body 1, be provided with a plurality of first circular holes 2 on sealing gasket body 1, sealing gasket body 1 is honeycomb structure promptly, and the horizontal equidistance in sealing gasket body 1 bottom is provided with a plurality of arcs 5, and sealing gasket body 1 top surface is provided with water-swelling layer 3, and sealing gasket body 1 both sides are outwards protruding, and the bellying in its both sides is provided with second circular hole 4, and the wall thickness between first circular hole 2 is 1.5 ~ 2.5 mm; the wall thickness between the first circular hole 2 and the second circular hole 4 is 1.5-2.5 mm; the wall thickness between the second round holes 4 is 1.5-2.5 mm.
Further, meet water inflation layer 3 cladding formula setting at sealed 1 top surface of filling up.
Further, the water-swellable layer 3 is made of a water-swellable polyurethane material.
Furthermore, the material of the sealing pad body 1 is ethylene propylene diene monomer.
As shown in fig. 2 or 3, in the using process, when the gasket body 1 is in the extruding state, the first circular holes 2 and the second circular holes 4 on the gasket body 1 having the honeycomb structure deform to generate the internal stress to achieve the waterproof effect, and the maximum rebound internal stress can be obtained in the compression process to improve the waterproof effect.
Simultaneously, when because the proruption reason in the work progress, when local infiltration takes place on sealing pad body 1 surface, the coating formula that the upper surface of sealing pad body 1 set up meets water inflation layer 3 and meets water and take place the volume expansion, and the meeting water inflation layer 3 of both sides extrudees each other and seals, plays "with the secondary of water stagnant water" and strengthens water-proof effects.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (4)
1. The utility model provides a section of jurisdiction joint gasket suitable for super buried depth shield tunnel which characterized in that: the sealing gasket comprises a sealing gasket body (1), wherein a plurality of first circular holes (2) are formed in the sealing gasket body (1), namely the sealing gasket body (1) is of a honeycomb structure, a plurality of arc-shaped grooves (5) are transversely and equidistantly formed in the bottom of the sealing gasket body (1), a water-swelling layer (3) is arranged on the surface of the top of the sealing gasket body (1), two sides of the sealing gasket body (1) are outwards protruded, second circular holes (4) are formed in the protruding parts of the two sides of the sealing gasket body, and the wall thickness between the first circular holes (2) is 1.5-2.5 mm; the wall thickness between the first circular hole (2) and the second circular hole (4) is 1.5-2.5 mm; the wall thickness between the second round holes (4) is 1.5-2.5 mm.
2. The segment joint gasket suitable for the super-buried deep shield tunnel according to claim 1, wherein: the water-swelling layer (3) is arranged on the top surface of the sealing gasket body (1) in a wrapping mode.
3. The segment joint gasket suitable for the super-buried deep shield tunnel according to claim 1, wherein: the water-swelling layer (3) is made of water-swelling polyurethane material.
4. The segment joint gasket suitable for the super-buried deep shield tunnel according to claim 1, wherein: the material of the sealing pad body (1) is ethylene propylene diene monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120104886.XU CN214944292U (en) | 2021-01-14 | 2021-01-14 | Segment joint sealing gasket suitable for super-buried-depth shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120104886.XU CN214944292U (en) | 2021-01-14 | 2021-01-14 | Segment joint sealing gasket suitable for super-buried-depth shield tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214944292U true CN214944292U (en) | 2021-11-30 |
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ID=79122991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120104886.XU Active CN214944292U (en) | 2021-01-14 | 2021-01-14 | Segment joint sealing gasket suitable for super-buried-depth shield tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214944292U (en) |
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2021
- 2021-01-14 CN CN202120104886.XU patent/CN214944292U/en active Active
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