CN203393678U - Permanent expansion joint water stop structure - Google Patents
Permanent expansion joint water stop structure Download PDFInfo
- Publication number
- CN203393678U CN203393678U CN201320372686.8U CN201320372686U CN203393678U CN 203393678 U CN203393678 U CN 203393678U CN 201320372686 U CN201320372686 U CN 201320372686U CN 203393678 U CN203393678 U CN 203393678U
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- elastic body
- sealing
- water
- water stop
- shrinkage joint
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Abstract
The utility model discloses a permanent expansion joint water stop structure, which comprises a water stop elastic body, wherein the water stop elastic body is arranged between expansion joints on concrete lining layers of a tunnel, and can be in an annular structure, in addition, the cross section of the water stop elastic body is in a rectangular shape, and in addition, a hollow water stop cavity is arranged inside the water stop elastic body. The inner wall of the water stop elastic body and the inner wall of the concrete lining layer are positioned in the same plane. Pressure media can be filled in the water stop cavity, so the compressible water stop elastic body is placed between the expansion joints, when the concrete lining layers in the tunnel contract, the expansion joints become wide, the water stop elastic body expands, the expansion joints are enabled to be always sealed, and the water leakage of the tunne cannot be caused. During the installation, the water stop elastic body can be simply and conveniently arranged in the expansion joints.
Description
Technical field
The utility model relates to a kind of permanent shrinkage joint water-stopping structure, espespecially a kind of new type of permanent property shrinkage joint water-stopping structure that is applied to hydraulic structure.
Background technology
Since 20th century, hydraulic structure develops rapidly in countries in the world, and scale is increasing.Existing permanent hydraulic structure all needs to dig for irrigating, generate electricity, supply water in process of construction, the hydraulic tunnel of sluicing, water delivery or construction diversion, and current have table in hole, are called non-pressure tunnel; Current are full of whole section, make tunnel wall bear certain water pressure, are called pressurized tunnel.Hydraulic tunnel is mainly by water inlet, barrel and outlet form, in order to prevent caving in and seeping water of rock in tunnel, barrel Common Steels reinforced concrete is made into permanent concrete lining, and concrete-lined tunnel does not allow to produce hoop crack conventionally, once there is infiltration in crack, whole hydraulic structure all will be damaged, hoop crack is mainly to cause because the drying shrinkage of temperature load and concrete material expands, mainly to eliminate by structure design and working measure, therefore, shrinkage joint between concrete lining course all will arrange water-stopping structure to reach the requirement of antiseepage.Different according to the working condition of tank or tunnel, traditional permanent shrinkage joint sealing has multiple way, sealing as U-shaped in copper sheet, rubber water-proof, pressing plate sealing, but all exist the deficiency that can not keep for a long time tunnel impermeability, complicated construction technique, especially recently way is between seam, to put into 2～3 road sealings, because it is limited by the performance of material itself and the restriction of construction, make the adaptive faculty of the flexible scope in Qi Dui shrinkage joint not strong.
Utility model content
The technical problems to be solved in the utility model is to provide and a kind ofly can be applied to multiple hydraulic structure and makes tunnel have good impermeability, the simple and convenient permanent shrinkage joint water-stopping structure of construction technology.
For solving the problems of the technologies described above, a kind of permanent shrinkage joint of the utility model water-stopping structure, is located at the sealing elastic body in shrinkage joint, and described sealing elastic body cross section is rectangle, and is provided with the sealing chamber of at least one hollow.
Preferably, described sealing chamber is two or more and is to be positioned in the middle of the two sides that join with shrinkage joint, and each sealing chamber is not communicated with mutually.
Preferably, in described sealing chamber, be filled with pressure medium.
Preferably, the press water mud that described pressure medium is microdilatancy.
Preferably, in elastomeric upstream face one side of this sealing, be provided with strengthening plate.
Preferably, this strengthening plate is steel plate.
Preferably, described sealing elastic body is made by neoprene.
Preferably, described sealing Qiang cross section is rectangle or circle.
Preferably, elastic body linkage, this elastic body linkage be section configuration and size identical with described sealing chamber can insert the tin plate cylinder in the elastomeric sealing of sealing chamber.
The beneficial effects of the utility model are to put into compressible sealing elastic body between ， shrinkage joint, when the concrete lining course in tunnel shrinks, shrinkage joint broadens, sealing elastic body expands thereupon, has guaranteed that shrinkage joint seals always, can not cause tunnel to leak.What when mounted, sealing elastic body can be easy is installed in shrinkage joint.
Accompanying drawing explanation
Fig. 1 is the shrinkage joint water stop structure schematic diagram that the utility model one embodiment is applied to a pressure tunnel.
Fig. 2 A, Fig. 2 B are the elastomeric sectional schematic diagram of the utility model neoprene sealing.
[main Reference numeral]
1, concrete lining course 2, shrinkage joint 3, sealing elastic body
4, sealing chamber 401, the first sealing chamber 402, the second sealing chamber
5, stiffener (steel plate) 6, upstream face
H, concrete lining layer thickness B, sealing elastic body width.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of a kind of permanent shrinkage joint of the utility model water-stopping structure is described in further details.
As shown in Figure 1, for the permanent shrinkage joint of the utility model water-stopping structure one specific embodiment is applied in the schematic diagram in a pressure tunnel, this pressure tunnel comprises concrete lining course 1, shrinkage joint 2 and be located at the permanent shrinkage joint water-stopping structure in shrinkage joint 2, this permanent shrinkage joint water-stopping structure comprises a sealing elastic body 3, concrete lining course 1 in tunnel longitudinally lining cutting at tunnel inwall, for the hoop crack that prevents concrete shrinkage or produce due to variations in temperature, preferably, several hoops shrinkage joint 2 is set on concrete lining course 1, the interior sealing elastic body 3 that arranges at described hoop shrinkage joint 2, please refer to shown in Fig. 2 A and Fig. 2 B, is the sectional schematic diagram of the utility model sealing elastic body 3 again, and when it is applied in this pressure tunnel, this sealing elastic body 3 is preferably rectangle for circulus ，Qi cross section.Certainly, according to the environment of its use, it is not limited to as circulus, also can be U-shapedly, and linear pattern is even irregular curve.Wherein, the elastomeric width B of the thickness h of concrete lining course and sealing is determined according to hydraulic structure, can select to have flexible rubber bodies as the making material of this sealing elastic body 3, preferably, selects neoprene.
Thereby for make this sealing elastic body 3 have certain stress make between itself and concrete lining course 1 against tightr, and can adapt to larger telescopic variation, in this preferred embodiment, in these sealing elastic body 3 inside, be provided with the sealing chamber 4 of one or multi-channel hollow, and each sealing chamber is not all communicated with mutually, further, due in the present embodiment, to be applied to pressure tunnel, mainly to utilize axial elasticity distortion, with prevent in the axial direction and concrete lining course 1 between there is gap, and in order to prevent that sealing elastic body 3 from producing longitudinal dilatation, preferably can be at least in upstream face 6 one sides of neoprene sealing elastic body 3, stiffener 5 be set, in the present embodiment, this reinforcement version is steel plate (can also be other material with proper strength), and at its back side place because it is to lean with country rock, this stiffener 5 can be set.
And when reality is used, 4 inside, sealing chamber can be filled the press water mud (or other chemical blowing materials) of microdilatancy as required, preferably, the cross section in sealing chamber 4 is rectangle or circle, in the present embodiment so that two sealing chambeies 401 to be set, 402 is example, the first filling water mud in sealing chamber of close country rock one side is as the second sealing chamber 402, behind the sealing chamber of close tunnel inner side, filling water mud is as the first sealing chamber 401, thereby after filling concrete slurry between sealing elastic body 3 and layer of concrete lining cutting layer 1 against the more tight object that reaches sealing, and the Double-insurance structure of formation twice sealing.
In one embodiment, when a kind of permanent shrinkage joint of the utility model water-stopping structure is applied in hydraulic architecture, because concrete lining course 1 easily produces hoop crack because of drying shrinkage and variations in temperature, therefore, conventionally along tunnel axis, transverse expansion joint 2 to be set, permeable to prevent tunnel.Shrinkage joint 2 between every two concrete lining courses 1 arranges has constrictive sealing elastic body 3, when the concrete lining course 1 of tunnel shrinks, shrinkage joint 2 broadens, this sealing elastic body 3 expands thereupon, the inwall of the inwall of sealing elastic body 3 and concrete lining course 1 is in same plane, guaranteed that shrinkage joint seals always, can not cause permeable.This sealing elastic body 3 is made by neoprene, simultaneously in order to prevent that sealing elastic body 3 from producing longitudinal dilatation distortion, upstream face 6 one sides at neoprene sealing elastic body 3 are also provided with steel plate 5, and in this sealing elastic body 3, be provided with the mutual disconnected hollow sealing of multiple tracks chamber 4 structures, preferably, for the mutual disconnected rectangle of twice or circular sealing chamber 401,402, by filling microdilatancy press water mud Shi Qiyu left and right sides concrete lining course in sealing chamber 1, compress the object that reaches sealing.When filling water mud, be preferably the second first filling water mud in sealing chamber 402 near country rock one side, and the first rear filling water mud in sealing chamber 401 of inner side, close hole.Can apply higher pressure owing to filling, and maintain this pressure after can solidifying by it while adopting cement, thereby this permanent shrinkage joint water-stopping structure can provide more closely knit stagnant water effect, and form twice sealing Double-insurance structure.And after solidifying, cement paste also can maintain this pressure.
The filling of described sealing intracavity liquid is can be by means of conduit is set on ring wall, and particular location can be established according to tunnel structure, at this, will not limit.
In addition, when sealing elasticity 3 bodies need spreading, while being especially applied to the sealing of straight line or U-shaped groove, can be according to section configuration and the size in hollow sealing chamber 4, with with sealing chamber 4 section configurations and measure-alike tin plate cylinder, in the present embodiment, about 200mm ~ the 300mm of this tube length, interior each half length in sealing chamber 4 of two sections of sealing elastic bodys 3 of connection is wanted in insertion, then (adhesive plaster is heated and shrinks available pyrocondensation adhesive plaster, radial shrinkage ratio is higher) seam crossing of tin plate cylinder is tightly wrapped up to two to three layers, finally use heating blower hot-melting sealed, reach the elastomeric object of spreading sealing.
In sum, a kind of permanent shrinkage joint of the utility model water-stopping structure, not only can be applied to circle and have pressure or non-pressure tunnel, also can be for the joint seal of other multiple hydraulic structures, as the upstream face sealing of concrete gravity dam, Concrete Face Rockfill Dam, the joint seal of U-shaped aqueduct etc.And because sealing elastic body can be combined closely with concrete lining course by the pressure producing in sealing chamber, closure is good, can not cause permeable.Meanwhile, adopt this structure construction simple, be applicable to various hydraulic structures.
Only the above, be only preferred embodiment of the present utility model, when not limiting the utility model practical range with this; Therefore, all simple equivalences of doing according to the utility model claim and utility model description change and modify, and all should still belong in the scope that the utility model patent contains.
Claims (9)
1. a permanent shrinkage joint water-stopping structure, is characterized in that, it comprises: be located at the sealing elastic body in shrinkage joint, described sealing elastic body cross section is rectangle, and is provided with the sealing chamber of at least one hollow.
2. a kind of permanent shrinkage joint as claimed in claim 1 water-stopping structure, is characterized in that, described sealing chamber is two or more and is to be positioned in the middle of the two sides that join with shrinkage joint, and each sealing chamber is not communicated with mutually.
3. a kind of permanent shrinkage joint as claimed in claim 1 or 2 water-stopping structure, is characterized in that, described sealing is filled with pressure medium in chamber.
4. a kind of permanent shrinkage joint as claimed in claim 3 water-stopping structure, is characterized in that the press water mud that described pressure medium is microdilatancy.
5. a kind of permanent shrinkage joint as claimed in claim 1 water-stopping structure, is characterized in that,
In elastomeric upstream face one side of this sealing, be provided with strengthening plate.
6. a kind of permanent shrinkage joint as claimed in claim 5 water-stopping structure, is characterized in that, this strengthening plate is steel plate.
7. a kind of permanent shrinkage joint as claimed in claim 1 water-stopping structure, is characterized in that, described sealing elastic body is made by neoprene.
8. a kind of permanent shrinkage joint water-stopping structure as described in claim 1,2,5 or 7, is characterized in that, described sealing Qiang cross section is rectangle or circle.
9. a kind of permanent shrinkage joint as claimed in claim 8 water-stopping structure, it is characterized in that, it also comprises, elastic body linkage, this elastic body linkage be section configuration and size identical with described sealing chamber can insert the tin plate cylinder in the elastomeric sealing of sealing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320372686.8U CN203393678U (en) | 2013-06-26 | 2013-06-26 | Permanent expansion joint water stop structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320372686.8U CN203393678U (en) | 2013-06-26 | 2013-06-26 | Permanent expansion joint water stop structure |
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| Publication Number | Publication Date |
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| CN203393678U true CN203393678U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320372686.8U Expired - Fee Related CN203393678U (en) | 2013-06-26 | 2013-06-26 | Permanent expansion joint water stop structure |
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| CN (1) | CN203393678U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806412A (en) * | 2014-03-04 | 2014-05-21 | 重庆市排水有限公司 | Water leakage repair structure for water pool expansion joint |
| CN103821109A (en) * | 2014-03-04 | 2014-05-28 | 重庆市排水有限公司 | Water pool expansion joint water leakage repairing method |
| CN111676908A (en) * | 2020-06-18 | 2020-09-18 | 中国水利水电科学研究院 | Concrete panel tensile joint and peripheral joint surface water stop structure and construction method thereof |
| CN114369997A (en) * | 2021-11-23 | 2022-04-19 | 洛阳双瑞特种装备有限公司 | Prestressed elastomer expansion joint and forming method |
| CN117306381A (en) * | 2023-10-08 | 2023-12-29 | 河北铁科翼辰新材科技有限公司 | Bridge waterproof polyurethane elastomer and preparation method and application thereof |
-
2013
- 2013-06-26 CN CN201320372686.8U patent/CN203393678U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806412A (en) * | 2014-03-04 | 2014-05-21 | 重庆市排水有限公司 | Water leakage repair structure for water pool expansion joint |
| CN103821109A (en) * | 2014-03-04 | 2014-05-28 | 重庆市排水有限公司 | Water pool expansion joint water leakage repairing method |
| CN103821109B (en) * | 2014-03-04 | 2015-11-11 | 重庆市排水有限公司 | Expansion joint of pool leaks restorative procedure |
| CN111676908A (en) * | 2020-06-18 | 2020-09-18 | 中国水利水电科学研究院 | Concrete panel tensile joint and peripheral joint surface water stop structure and construction method thereof |
| CN114369997A (en) * | 2021-11-23 | 2022-04-19 | 洛阳双瑞特种装备有限公司 | Prestressed elastomer expansion joint and forming method |
| CN117306381A (en) * | 2023-10-08 | 2023-12-29 | 河北铁科翼辰新材科技有限公司 | Bridge waterproof polyurethane elastomer and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20170626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |