CN208996744U - A kind of novel combined waterproof sealing gasket of shield tunnel - Google Patents
A kind of novel combined waterproof sealing gasket of shield tunnel Download PDFInfo
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- CN208996744U CN208996744U CN201821563869.7U CN201821563869U CN208996744U CN 208996744 U CN208996744 U CN 208996744U CN 201821563869 U CN201821563869 U CN 201821563869U CN 208996744 U CN208996744 U CN 208996744U
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- gasket
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- pad body
- novel combined
- rubber
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Abstract
The utility model discloses a kind of novel combined waterproof sealing gaskets of shield tunnel, including sealing pad body (1), the sealing pad body (1) is set in shield duct piece gasket groove, it is characterised in that: the bottom surface of sealing pad body (1) is provided with hydro-expansive rubber (2) close to shield duct piece gasket trench bottom surfaces (3) side.The novel combined waterproof sealing gasket of the utility model, overcome prior art prejudice, hydro-expansive rubber is placed in the bottom of gasket groove, even if larger faulting of slab ends occurs between section of jurisdiction, hydro-expansive rubber in gasket is still in a totally-enclosed environment, after underground water penetrates between gasket bottom and gasket groove under pressure, hydro-expansive rubber can play supplement water-proof function.
Description
Technical field
The utility model belongs to Tunnel Engineering technical field, is related to a kind of for the new of shield tunnel segments' joints waterproofing
Type composite seal mat structure.
Background technique
Existing duct pieces of shield tunnel waterproof sealing gasket easily occurs to open under the effect of high hydraulic pressure or by water pressure breakdown, from
And lead to section of jurisdiction waterproof failure.When water pressure is sufficiently large or the mutual extrusion power deficiency of adjacent section of jurisdiction, water electrode is easy on the outside of tunnel
Structurally waterproof is caused to fail through waterproof sealing gasket.In addition, duct piece connector is inevitably in tunnel segment structure deformation process
Certain opening occurs, so as to cause the mutual extrusion power reduction between waterproof sealing gasket or even the phase between waterproof sealing gasket
Mutual extruding force is that certain gap is generated between zero or waterproof sealing gasket, so as to cause duct piece connector waterproof failure.
The waterproof principle of hydro-expansive rubber is volume expansion after being absorbed water by material, because of volume expansion in confined space
It is limited, so that contact stress increases between gasket and obligatory point, to play waterproof action.Under high hydraulic condition, in order to
Reinforce shield tunnel segments' joints waterproofing ability, part shield tunnel segment joint waterproof sealing gasket uses ethylene-propylene-diene monomer
Glue and the compound waterproof sealing gasket of hydro-expansive rubber, at present composite gasket it is as shown in Figure 1.
Utility model content
In industry there is a kind of universal technology prejudice for this kind of composite gasket, that is, existing composite gasket
Hydro-expansive rubber is compounded in cellular EPT rubber packing pad top surface or upper surface (one far from gasket groove
Side).For utility model people the study found that from the point of view of practical effect, such gasket is primarily present following problem:
It 1) is since concrete pipe sheet gasket trench bottom surfaces have honeycomb, pitted skin etc. in the more situations of segment joint percolating water
Defect, underground water passes through under the effect of high hydraulic pressure to be leaked between gasket and section of jurisdiction trench bottom surfaces concrete, at this point, water-swellable
Rubber cannot play the reinforcement waterproof action of water-swellable.
2) hydro-expansive rubber before pipe sheet assembling it is exposed outside, be generally coated with although surface applies and delay swollen dose, because of sky
Water is met in section of jurisdiction during gas is moist or assembly, still frequent occurrence hydro-expansive rubber premature inflation the phenomenon that, cause sealing strip de-
It falls or assembled difficult.
For at least one of prior art the above defects or improvement requirements, the utility model provides a kind of shield tunnel
The novel combined waterproof sealing gasket in road, overcomes prior art prejudice, and hydro-expansive rubber is placed in the bottom of gasket groove,
Even if larger faulting of slab ends occurs between section of jurisdiction, the hydro-expansive rubber in gasket works as underground water still in a totally-enclosed environment
After penetrating between gasket bottom and gasket groove under pressure, hydro-expansive rubber can play supplement waterproof function
Energy.
According to the one aspect of the utility model, a kind of novel combined waterproof sealing gasket of shield tunnel is provided, including close
Packing ontology, the sealing pad body are set in shield duct piece gasket groove；
The bottom surface of the sealing pad body is provided with water-swellable rubber close to shield duct piece gasket trench bottom surfaces side
Glue.
Preferably, the bottom surface setting of the sealing pad body is fluted.
Preferably, the hydro-expansive rubber is embedded is arranged in the groove.
Preferably, the groove has multiple, and the setting hydro-expansive rubber is embedded at least partly in groove.
Preferably, it is bonded and is provided between the bottom surface and the shield duct piece gasket trench bottom surfaces of the sealing pad body
The hydro-expansive rubber of planar.
Preferably, the sealing pad body is ethylene propylene diene rubber.
Preferably, the ethylene propylene diene rubber of the waterproof system gasket and the hydro-expansive rubber are integrated
Structure.
According to the second aspect of the utility model, a kind of novel combined waterproof sealing gasket, including sealing advance capital for are also provided
Body, the sealing pad body are set in gasket groove；
The bottom surface of the sealing pad body is provided with hydro-expansive rubber close to gasket trench bottom surfaces side.
Preferably, the bottom surface setting of the sealing pad body is fluted, and the hydro-expansive rubber is embedded to be arranged described
In groove.
Preferably, the institute for being provided with planar is bonded between the bottom surface and the gasket trench bottom surfaces of the sealing pad body
State hydro-expansive rubber.
Above-mentioned preferred feature can be combined with each other as long as they do not conflict with each other.
In general, have the above technical solutions conceived by the present invention are compared with the prior art, with following
Beneficial effect:
1, the utility model proposes novel combined waterproof sealing gasket installation after, hydro-expansive rubber is placed in gasket ditch
The bottom of slot, even if larger faulting of slab ends occurs between section of jurisdiction, the hydro-expansive rubber in gasket still in a totally-enclosed environment,
After underground water penetrates between gasket bottom and gasket groove under pressure, hydro-expansive rubber can play benefit
Fill water-proof function.
2, the utility model novel combined gasket installation after, hydro-expansive rubber will not it is exposed outside, avoid
It is contacted with air or water, will not be conducive to construct there is a phenomenon where premature inflation.
Detailed description of the invention
Fig. 1 is prior-art illustration；
Fig. 2 is the schematic diagram of an embodiment of the present invention；
Fig. 3 is the schematic diagram of another embodiment of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.With reference to embodiment to this
Utility model is further described.
As Figure 2-3, the novel combined waterproof sealing gasket of the shield tunnel of the utility model, including sealing pad body 1,
The sealing pad body 1 is set in shield duct piece gasket groove, is overcome prior art prejudice, is especially constructed, institute
The bottom surface for stating sealing pad body 1 is provided with hydro-expansive rubber 2 close to 3 side of shield duct piece gasket trench bottom surfaces.It is described
Sealing pad body 1 be ethylene propylene diene rubber, new waterproof gasket it is compound by ethylene propylene diene rubber and hydro-expansive rubber 2 and
At.Ethylene propylene diene rubber answers force request according to elastic sealing gasket waterproof ability and construction assembly, is designed as vesicular texture, meets water
Expanded rubber 2 is designed as entity structure.
For the composite construction form of new waterproof gasket, following various embodiments are provided.
Embodiment 1, as shown in Figure 2.
The bottom surface setting of the sealing pad body 1 is fluted.The hydro-expansive rubber 2 is embedded to be arranged in the groove
In.Preferably, the groove has multiple, and the setting hydro-expansive rubber 2 is embedded at least partly in groove.The groove and ontology
Interior porous structure is equally longitudinally through slot, and the hydro-expansive rubber 2 is longitudinal string configuration, embedded section
It is not limited here, the prior art can be used in shape and connection type etc..
Embodiment 2, as shown in Figure 3.
It is bonded between the bottom surface and the shield duct piece gasket trench bottom surfaces 3 of the sealing pad body 1 and is provided with planar
The hydro-expansive rubber 2.Empty groove can also be arranged in the bottom surface of the sealing pad body 1 at this time.
3 (not shown) of embodiment.
Embodiment 1 and embodiment 2 are combined, the hydro-expansive rubber 2 includes built-in part and planar part.Insertion part
Set up separately and set at least partly groove, the bottom surface for sealing pad body 1 and the shield duct piece is arranged in the fitting of planar part
Between gasket trench bottom surfaces 3.Built-in part and planar part are separate structure or integral structure.
Above-mentioned waterproof system gasket is by ethylene propylene diene rubber and hydro-expansive rubber synchronic curing, once-forming.
The utility model proposes novel combined waterproof sealing gasket installation after, hydro-expansive rubber is placed in gasket groove
Bottom, even if larger faulting of slab ends occurs between section of jurisdiction, the hydro-expansive rubber in gasket still in a totally-enclosed environment, when
After underground water penetrates between gasket bottom and gasket groove under pressure, hydro-expansive rubber can play supplement
Water-proof function.The utility model novel combined gasket installation after, hydro-expansive rubber will not it is exposed outside, avoid
It is contacted with air or water, will not be conducive to construct there is a phenomenon where premature inflation.
Certainly, the technical concept of the utility model is not only limited in shield tunnel neighborhood, and can be also used for substitution has waterproof
The conventional waterproof gasket used in other neighborhoods of demand.
The utility model also provides a kind of novel combined waterproof sealing gasket, including sealing pad body 1, the sealing advance capital for
Body 1 is set in gasket groove, is overcome prior art prejudice, is especially constructed, and the bottom surface of the sealing pad body 1 is
3 side of gasket trench bottom surfaces is provided with hydro-expansive rubber 2.The sealing pad body 1 is ethylene propylene diene rubber, novel
Waterproof sealing gasket is combined by ethylene propylene diene rubber and hydro-expansive rubber 2.Ethylene propylene diene rubber is anti-according to elastic sealing gasket
Force request is answered in outlet capacity and construction assembly, is designed as vesicular texture, hydro-expansive rubber 2 is designed as entity structure.
For the composite construction form of new waterproof gasket, following various embodiments are provided.
Embodiment 4, as shown in Figure 2.
The bottom surface setting of the sealing pad body 1 is fluted.The hydro-expansive rubber 2 is embedded to be arranged in the groove
In.Preferably, the groove has multiple, and the setting hydro-expansive rubber 2 is embedded at least partly in groove.The groove and ontology
Interior porous structure is equally longitudinally through slot, and the hydro-expansive rubber 2 is longitudinal string configuration, embedded section
It is not limited here, the prior art can be used in shape and connection type etc..
Embodiment 5, as shown in Figure 3.
The chance for being provided with planar is bonded between the bottom surface and the gasket trench bottom surfaces 3 of the sealing pad body 1
Water-expansible rubber 2.Empty groove can also be arranged in the bottom surface of the sealing pad body 1 at this time.
6 (not shown) of embodiment.
Embodiment 4 and embodiment 5 are combined, the hydro-expansive rubber 2 includes built-in part and planar part.Insertion part
Set up separately and set at least partly groove, the bottom surface for sealing pad body 1 and the gasket ditch is arranged in the fitting of planar part
Between groove bottom 3.Built-in part and planar part are separate structure or integral structure.
Above-mentioned waterproof system gasket is by ethylene propylene diene rubber and hydro-expansive rubber synchronic curing, once-forming.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of novel combined waterproof sealing gasket of shield tunnel, including sealing pad body (1), the sealing pad body (1) set
It is placed in shield duct piece gasket groove, it is characterised in that:
The bottom surface of sealing pad body (1) is provided with water-swellable close to shield duct piece gasket trench bottom surfaces (3) side
Rubber (2).
2. the novel combined waterproof sealing gasket of shield tunnel as described in claim 1, it is characterised in that: the sealing pad body
(1) bottom surface setting is fluted.
3. the novel combined waterproof sealing gasket of shield tunnel as claimed in claim 2, it is characterised in that: the water-swellable rubber
Glue (2) is embedded to be arranged in the groove.
4. the novel combined waterproof sealing gasket of shield tunnel as claimed in claim 3, it is characterised in that: the groove has more
It is a, the setting hydro-expansive rubber (2) is embedded at least partly in groove.
5. the novel combined waterproof sealing gasket of shield tunnel according to any one of claims 1-4, it is characterised in that: described close
The chance water for being provided with planar is bonded between the bottom surface of packing ontology (1) and the shield duct piece gasket trench bottom surfaces (3)
Expanded rubber (2).
6. the novel combined waterproof sealing gasket of shield tunnel as described in claim 1, it is characterised in that: the sealing pad body
It (1) is ethylene propylene diene rubber.
7. the novel combined waterproof sealing gasket of shield tunnel as claimed in claim 6, it is characterised in that: the waterproof system
The ethylene propylene diene rubber and the hydro-expansive rubber (2) of gasket are structure as a whole.
8. a kind of novel combined waterproof sealing gasket, including sealing pad body (1), the sealing pad body (1) are set to sealing
It pads in groove, it is characterised in that:
The bottom surface of sealing pad body (1) is provided with hydro-expansive rubber (2) close to gasket trench bottom surfaces (3) side.
9. novel combined waterproof sealing gasket as claimed in claim 8, it is characterised in that: the bottom of sealing pad body (1)
Face setting is fluted, and the hydro-expansive rubber (2) is embedded to be arranged in the groove.
10. such as the described in any item novel combined waterproof sealing gaskets of claim 8-9, it is characterised in that: the sealing advance capital for
The hydro-expansive rubber (2) for being provided with planar is bonded between the bottom surface of body (1) and the gasket trench bottom surfaces (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563869.7U CN208996744U (en) | 2018-09-21 | 2018-09-21 | A kind of novel combined waterproof sealing gasket of shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563869.7U CN208996744U (en) | 2018-09-21 | 2018-09-21 | A kind of novel combined waterproof sealing gasket of shield tunnel |
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| CN208996744U true CN208996744U (en) | 2019-06-18 |
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| CN201821563869.7U Active CN208996744U (en) | 2018-09-21 | 2018-09-21 | A kind of novel combined waterproof sealing gasket of shield tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952777A (en) * | 2018-09-21 | 2018-12-07 | 中铁第四勘察设计院集团有限公司 | A kind of novel combined waterproof sealing gasket of shield tunnel |
-
2018
- 2018-09-21 CN CN201821563869.7U patent/CN208996744U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952777A (en) * | 2018-09-21 | 2018-12-07 | 中铁第四勘察设计院集团有限公司 | A kind of novel combined waterproof sealing gasket of shield tunnel |
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