CN210066374U - Sealing structure of expansion joint - Google Patents
Sealing structure of expansion joint Download PDFInfo
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- CN210066374U CN210066374U CN201822070742.8U CN201822070742U CN210066374U CN 210066374 U CN210066374 U CN 210066374U CN 201822070742 U CN201822070742 U CN 201822070742U CN 210066374 U CN210066374 U CN 210066374U
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Abstract
The embodiment of the utility model provides a sealing structure of expansion joint, is applied to the expansion joint of the sealing layer between the ballastless track lines of the high-speed railway, and the sealing structure comprises a sealant, an additional layer and a waterproof layer; the sealant is filled in the expansion joint; the additional layer is respectively connected with the concrete structures at two sides of the expansion joint and covers the sealing glue; the waterproof layer covers on the additional layer to be connected with the concrete structure of expansion joint both sides respectively, and the width of waterproof layer is greater than the width of additional layer. The utility model discloses a cover additional layer and waterproof layer on the sealing adhesive of filling the expansion joint, the additional layer covers and connects the concrete structure of expansion joint both sides on the sealing adhesive, can provide integrative smooth spraying base face for the waterproof layer, and the waterproof layer covers on the additional layer, has effectively guaranteed that the waterproof layer shelters from to the covering of additional layer and sealed glue, keeps apart the ultraviolet ray to weaken the direct influence of the difference in temperature to sealed glue, promoted sealed life-span and reliability of gluing, improved the waterproof performance of enclosed construction.
Description
Technical Field
The utility model relates to a building engineering waterproof field especially relates to an enclosed construction at expansion joint.
Background
With the development and progress of economy in China, high-speed railways are greatly built and put into operation.
In order to ensure the safe and stable operation of the ballastless track of the high-speed railway, the waterproof of the ballast bed of the ballastless track is an important measure for ensuring the safety and reliability of the roadbed. At present, for waterproof treatment of an expansion joint of a sealing layer between railway lines, a sealing structure is usually formed by injecting sealant, so that rainwater and the like are prevented from leaking.
However, the sealing structure is filled with a single sealing adhesive, so that the sealing adhesive of the formed sealing structure is exposed in an air environment, is easily corroded by natural environments such as temperature difference and ultraviolet rays, is easy to age and lose efficacy, causes the reduction of waterproof performance, increases leakage risks, reduces the safety of a ballast bed, and is not beneficial to the driving safety of high-speed railways.
SUMMERY OF THE UTILITY MODEL
The utility model provides a closed structure at expansion joint to solve current waterproof construction and receive the problem that the natural environment corrodes and lead to the waterproof performance to descend easily.
A sealing structure of an expansion joint is applied to the expansion joint of a sealing layer between ballastless track lines of a high-speed railway, and comprises a sealant, an additional layer and a waterproof layer;
the sealant is filled in the expansion joint;
the additional layer is respectively connected with the concrete structures on two sides of the expansion joint and covers the sealing adhesive;
the waterproof layer covers the additional layer and is respectively connected with the concrete structures on two sides of the expansion joint, and the width of the waterproof layer is larger than that of the additional layer.
Optionally, the closure structure further comprises a caulking plate;
the caulking plate is positioned on one side of the expansion joint close to the foundation structure;
the sealant is filled in the expansion joint and is simultaneously contacted with the expansion joint and the caulking plate.
Optionally, the distance between the top of the caulking plate and the top of the expansion joint is 20mm to 40 mm.
Optionally, the caulking plate is a closed cell polyethylene plastic foam plate.
Optionally, the waterproof layer is made of spraying rubber asphalt waterproof paint, and the spraying thickness of the spraying rubber asphalt waterproof paint is not less than 2.0 mm.
Optionally, the overlapping width of different sections of the sprayed rubberized asphalt waterproofing coating is at least 100 mm.
Optionally, the closed structure further comprises an interfacial agent layer;
the interface agent layer is made of any one of polyurethane resin, acrylic resin, liquid rubber and epoxy resin;
the interfacial agent layer is disposed on the concrete base surface between the additional layer and the sealing layer.
Optionally, the sealant is any one of silicone, polysulfide or polyurethane sealant.
Optionally, the additional layer is a self-adhesive waterproofing roll.
Optionally, the width of the additional layer is at least 100mm, and the width of the waterproof layer is at least 300 mm.
To prior art, the utility model discloses possess following advantage:
the utility model provides a pair of enclosed construction at expansion joint, cover additional layer and waterproof layer through on the sealing adhesive at the packing expansion joint, the additional layer covers the concrete structure with the expansion joint both sides on the sealing adhesive and connects, can provide integrative smooth spraying base face for the waterproof layer, the waterproof layer covers on the additional layer, and be connected with the concrete structure of expansion joint both sides respectively, and the width of waterproof layer is greater than the width of additional layer, it shelters from to the cover of additional layer and sealed glue effectively to have guaranteed the waterproof layer, keep apart outside ultraviolet ray, and weaken the direct influence of the difference in temperature to sealed glue, sealed life-span and reliability of gluing have been promoted, enclosed construction's waterproof performance has been improved.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic view of an expansion joint according to an embodiment of the present invention;
fig. 2 is a schematic view of a closed structure of an expansion joint according to an embodiment of the present invention;
fig. 3 is a schematic view of another sealing structure for an expansion joint according to the embodiment of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
It should be understood that the specific embodiments described herein are merely illustrative of the present invention, and are not intended to limit the present invention.
Referring to fig. 1 and 2, the utility model provides a closed structure of expansion joint, which is applied to the expansion joint 11 of the closed layer between ballastless track lines of a high-speed railway, and comprises a sealant 12, an additional layer 13 and a waterproof layer 14;
the sealant 12 is filled in the expansion joint 11;
the additional layer 13 is respectively connected with the concrete structures 10 at two sides of the expansion joint 11 and covers the sealant 12;
the waterproof layer 14 covers the additional layer 13 and is respectively connected with the concrete structures 10 at two sides of the expansion joint 11, and the width of the waterproof layer 14 is greater than that of the additional layer 13.
Particularly, the utility model provides a closed structure at expansion joint, this closed structure are applied to the expansion joint 11 as shown in fig. 1's the ballastless track space inter space closed layer of high-speed railway, and this expansion joint 11 both can be the longitudinal joint 110 unanimous with the rail extending direction that forms between closed layer 101 and the railway roadbed board 102, also can be between the adjacent closed layer 101 form with rail extending direction vertically transversal joint 111, the closed layer is the concrete structure 10 of pouring formation with the railway roadbed board. The expansion joint 11 is an allowable clearance which ensures that a roadbed on a roadbed can freely stretch out and draw back due to temperature change, and in order to prevent moisture such as rainwater from seeping into the roadbed foundation through the expansion joint 11, the expansion joint 11 needs to be subjected to waterproof treatment, and meanwhile, the expansion function can be normally realized. As shown in fig. 2, the sealing structure of the present invention includes a sealant 12, an additional layer 13 and a waterproof layer 14. The sealant 12 is filled in the expansion joint 11 to form a plug for the expansion joint 11. The additional layer 13 covers the sealant 12, and the additional layer 13 is connected to the concrete structure 10 on both sides of the expansion joint 11, i.e. the additional layer 13 extends from the sealing layer on one side to the sealing layer on the other side, or from the sealing layer on one side to the roadbed slab on the other side, and the intermediate layer crosses the sealant 12 in the expansion joint 11. The additional layer 13 thus completely covers the barrier sealant 12 and prevents the sealant 12 from being exposed to air and thus shields the sealant from air and sunlight. The waterproof layer 14 covers the additional layer 13, the waterproof layer 14 extends from the sealing layer on one side to the sealing layer on the other side, or extends from the sealing layer on one side to the track bed slab on the other side, the middle part crosses the sealant 12 in the expansion joint 11 and the additional layer 13 covering the sealant 12, the width of the waterproof layer 14 is larger than that of the additional layer 13, the waterproof layer 14 is ensured to completely cover the shielding additional layer 13, namely, the waterproof layer 14 also covers the edge joint position of the additional layer 13, and the risk of leakage is reduced.
The utility model provides a pair of enclosed construction at expansion joint, cover additional layer and waterproof layer through on the sealing adhesive at the packing expansion joint, the additional layer covers the concrete structure with the expansion joint both sides on the sealing adhesive and connects, can provide integrative smooth spraying base face for the waterproof layer, the waterproof layer covers on the additional layer, and be connected with the concrete structure of expansion joint both sides respectively, and the width of waterproof layer is greater than the width of additional layer, it shelters from to the cover of additional layer and sealed glue effectively to have guaranteed the waterproof layer, keep apart outside ultraviolet ray, and weaken the direct influence of the difference in temperature to sealed glue, sealed life-span and reliability of gluing have been promoted, enclosed construction's waterproof performance has been improved.
Optionally, with reference to fig. 3, the closure structure further comprises a caulking plate 15;
the caulking plate 15 is positioned on one side of the expansion joint 11 close to the foundation structure;
the sealant 12 is filled in the expansion joint 11 and is simultaneously in contact with the expansion joint 11 and the caulking plate 15.
Specifically, as shown in fig. 3, the sealing structure further includes a caulking plate 15, the caulking plate 15 is located at one side of the expansion joint 11 close to the foundation structure, the foundation structure refers to a foundation structure in which a sealing layer and a track bed slab are constructed, the caulking plate 15 is located at a lower position in the expansion joint 11, so that a space for filling the sealant 12 is reserved at the upper position, the sealant 12 is filled in the filling space at the upper position of the expansion joint 11, and the sealant 12 is simultaneously in contact with two sides of the expansion joint 11 and the top of the caulking plate 15, so as to seal the expansion joint 11. So, the cost that sealed glue filling led to has been avoided using alone to the application of caulking plate is too high, and the colloid is more, is unfavorable for quick solidification more, and the caulking plate combines confined structure with sealed glue, and the cost is reduced on the one hand, and on the other hand helps shortening construction cycle.
Optionally, referring to fig. 3, a distance H between the top of the caulking plate 15 and the top of the expansion joint 11 is 20mm to 40 mm.
Specifically, as shown in fig. 3, when the caulking plate 15 is located at a lower position in the expansion joint 11, the top of the caulking plate 15 and the vacant part at the top of the expansion joint 11 form a filling space for the sealant 12. The distance H between the top of the caulking plate 15 and the top of the expansion joint 11 can be 20mm to 40mm, so that the sealing performance of the sealant can be utilized, and the phenomenon that the thickness is thick due to excessive sealant amount can be avoided.
Optionally, the caulk plate 15 is a closed cell polyethylene foam plate.
Particularly, because the polyethylene plastic foam board possesses good elasticity, and resistance to compression, tensile properties are better, and the water absorption rate is low, and the obturator polyethylene plastic foam board is made through the high pressure, and its compactibility and prevention of seepage permeability are better, select to use as the caulking plate, are unlikely to influence the normal flexible of expansion joint, can reach sealed waterproof with sealed glue cooperation again.
Optionally, the waterproof layer 14 is made of a spraying rubber asphalt waterproof coating, and the spraying thickness of the spraying rubber asphalt waterproof coating is not less than 2.0 mm.
Specifically, as for the aforementioned waterproof layer 14, it can be formed by spraying a spray rubberized asphalt waterproof paint having a thickness of at least 2.0mm on the additional layer 13 by a spraying device. The rubber asphalt waterproof coating is sprayed and constructed flexibly, so that the formed waterproof layer is good in continuity and integrity and excellent in waterproof performance.
Optionally, the overlapping width of different sections of the sprayed rubberized asphalt waterproofing coating is at least 100 mm.
Specifically, in the actual engineering construction, when the high-speed rail line is constructed in different sections, the rubber asphalt waterproof coating sprayed on each section is not necessarily sprayed simultaneously, for example, the section a is sprayed on the first day, and the section B is sprayed on the second day, so that different sections can be formed due to the sequence of the construction time, and the overlapping width of the different sections is at least 100mm to ensure the reliable waterproof performance of the joints of the different sections.
Optionally, referring to fig. 3, the closure structure further comprises an interfacial agent layer 16;
the interface agent layer 16 is made of any one of polyurethane resin, acrylic resin, liquid rubber and epoxy resin;
the interfacial agent layer 16 is disposed between the additional layer 13 and the closure layer 10.
Specifically, as shown in fig. 3, when the surface of the sealing layer of the track bed or the concrete structure of the track bed slab is not dense and smooth enough, the sealing structure further includes an interfacial agent layer 16, and the interfacial agent layer 16 may be any one of polyurethane resin, acrylic resin, liquid rubber and epoxy resin, and epoxy resin is preferably used because epoxy resin has excellent chemical resistance, particularly excellent alkali resistance, and its paint film adhesion is also strong. Taking epoxy resin as an example, the epoxy resin is coated on the surface of the concrete structure, and the epoxy resin can be arranged on the concrete base surface between the additional layer 13 and the closed layer 10, so that the epoxy resin can be well attached to the concrete structure, the silicate erosion resistance of the epoxy resin is also strong, and the surface of the epoxy resin after being dried is dense and smooth, which is beneficial to the implementation of the additional layer 13.
Optionally, the sealant 12 is any one of silicone, polysulfide or polyurethane sealant.
Particularly, consider factors such as sealing performance, the setting time of colloid material, can select any one of silicone, polysulfide or polyurethane sealant to be applied as sealed glue in the utility model discloses an among the enclosed construction.
Optionally, the additional layer is a self-adhesive waterproofing roll.
Specifically, the additional layer may be a self-adhesive waterproof roll, a cross-laminated film self-adhesive waterproof roll or a self-adhesive polymer modified asphalt waterproof roll, and the self-adhesive waterproof roll is not used with an adhesive, and is not required to be heated and baked to be molten, and can be firmly adhered to the base layer only by tearing off the isolation layer, so that the construction is convenient and the construction speed is very fast.
Alternatively, with reference to fig. 3, the width L1 of the additional layer 13 is at least 100mm, and the width L2 of the waterproof layer 14 is at least 300 mm.
Specifically, as shown in fig. 3, in order to ensure that the additional layer 13 and the waterproof layer 14 achieve their respective functions, the width L1 of the additional layer 13 may be at least 100mm, and the width L2 of the waterproof layer 14 may be at least 300mm, so that the coverage of the additional layer and the waterproof layer can be ensured to the maximum extent.
To sum up, the embodiment of the utility model provides a include following advantage:
the utility model provides a pair of enclosed construction at expansion joint, cover additional layer and waterproof layer through on the sealing adhesive at the packing expansion joint, the additional layer covers the concrete structure with the expansion joint both sides on the sealing adhesive and connects, can provide integrative smooth spraying base face for the waterproof layer, the waterproof layer covers on the additional layer, and be connected with the concrete structure of expansion joint both sides respectively, and the width of waterproof layer is greater than the width of additional layer, it shelters from to the cover of additional layer and sealed glue effectively to have guaranteed the waterproof layer, keep apart outside ultraviolet ray, and weaken the direct influence of the difference in temperature to sealed glue, sealed life-span and reliability of gluing have been promoted, enclosed construction's waterproof performance has been improved.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A sealing structure of an expansion joint is applied to the expansion joint of a sealing layer between ballastless track lines of a high-speed railway, and is characterized in that the sealing structure comprises a sealant, an additional layer and a waterproof layer;
the sealant is filled in the expansion joint;
the additional layer is respectively connected with the concrete structures on two sides of the expansion joint and covers the sealing adhesive;
the waterproof layer covers the additional layer and is respectively connected with the concrete structures on two sides of the expansion joint, and the width of the waterproof layer is larger than that of the additional layer.
2. The closure structure according to claim 1, further comprising a caulk plate;
the caulking plate is positioned on one side of the expansion joint close to the foundation structure;
the sealant is in contact with the expansion joint and the caulking plate.
3. The enclosure of claim 2,
the distance between the top of the caulking plate and the top of the expansion joint is 20mm to 40 mm.
4. The enclosure of claim 2,
the caulking plate is a closed-cell polyethylene plastic foam plate.
5. The enclosure of claim 1,
the waterproof layer is made of spraying rubber asphalt waterproof paint, and the spraying thickness of the spraying rubber asphalt waterproof paint is not less than 2.0 mm.
6. The enclosure of claim 5,
the overlapping width of different subareas of the spraying rubber asphalt waterproof coating is at least 100 mm.
7. The closure structure according to claim 1, further comprising an interfacial agent layer;
the interface agent layer is made of any one of polyurethane resin, acrylic resin, liquid rubber and epoxy resin;
the interfacial agent layer is disposed on the concrete base surface between the additional layer and the sealing layer.
8. The enclosure of claim 1,
the sealant is any one of silicone, polysulfide or polyurethane sealant.
9. The enclosure of claim 1,
the additional layer is a self-adhesive waterproof roll.
10. The enclosure of claim 1,
the width of the additional layer is at least 100mm, and the width of the waterproof layer is at least 300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822070742.8U CN210066374U (en) | 2018-12-10 | 2018-12-10 | Sealing structure of expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822070742.8U CN210066374U (en) | 2018-12-10 | 2018-12-10 | Sealing structure of expansion joint |
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| CN210066374U true CN210066374U (en) | 2020-02-14 |
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| CN201822070742.8U Active CN210066374U (en) | 2018-12-10 | 2018-12-10 | Sealing structure of expansion joint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130508A (en) * | 2019-05-28 | 2019-08-16 | 五冶集团上海有限公司 | A kind of waterproof method of expansion joint of pool |
| CN111395067A (en) * | 2020-04-30 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Waterproof structure for pile plate structure and construction method thereof |
| CN114922008A (en) * | 2022-05-23 | 2022-08-19 | 中铁十五局集团有限公司 | Ballastless track high-speed railway roadbed reinforcement waterproof structure and construction method thereof |
-
2018
- 2018-12-10 CN CN201822070742.8U patent/CN210066374U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130508A (en) * | 2019-05-28 | 2019-08-16 | 五冶集团上海有限公司 | A kind of waterproof method of expansion joint of pool |
| CN111395067A (en) * | 2020-04-30 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Waterproof structure for pile plate structure and construction method thereof |
| CN114922008A (en) * | 2022-05-23 | 2022-08-19 | 中铁十五局集团有限公司 | Ballastless track high-speed railway roadbed reinforcement waterproof structure and construction method thereof |
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