CN103696396B - Engineering method is filled out in the water sealing structure at a kind of expansion joint and the spray forming this water sealing structure - Google Patents
Engineering method is filled out in the water sealing structure at a kind of expansion joint and the spray forming this water sealing structure Download PDFInfo
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- CN103696396B CN103696396B CN201310606513.2A CN201310606513A CN103696396B CN 103696396 B CN103696396 B CN 103696396B CN 201310606513 A CN201310606513 A CN 201310606513A CN 103696396 B CN103696396 B CN 103696396B
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Abstract
This application discloses the water sealing structure at a kind of expansion joint, the sidewall at expansion joint and on along being provided with prime coat, in expansion joint, fill elastic water-proof obturator, be provided with polyurea elastomer water-proof coating on the upper edge at expansion joint. Its sealing performance is good, weather resistance and impact-resisting wear-resisting strong, have the expansion joint 3 D deformation ability that adapts to, construction is simple. Additionally provide the spray forming this water sealing structure and fill out engineering method.
Description
Technical field
The invention belongs to the technical field of civil engineering work, hydro project, specifically relate to the water sealing structure at a kind of expansion joint, and engineering method is filled out in the spray forming this water sealing structure.
Background technology
The expansion joint sealing (such as: tunnel lining seam sealing, face-plate of rockfill dam expansion joint sealing, aqueduct expansion joints sealing etc.) of hydraulic structure is an extremely important problem being difficult to again to solve. Particularly the expansion joint of the important building such as pumping plant, water delivery aqueduct, tunnel, closed conduit, will cause serious consequence once leak. Expansion joint packing material, while meeting weather resistance, should have the resilient characteristic adapting to 3 D deformation, requires the cohesive force having with seam two side has had simultaneously, and namely packing material deformation failure should not be adhesive surface. Surface closed material should have the feature adapting to expansion joint distortion equally, and has sealing, anti-impact, the feature such as wear-resisting.
Rubber fastening band sealing is one of sealing form of often adopting of hydraulic structure expansion joint, and owing to the long-term use of sealing plate, loading material of rubber, sealing compound etc. there will be aging phenomenon, drainage can occur at expansion joint place. As studying for a second time courses one has flunked method, can fill, loading material of rubber is installed and smear the polymerization cement etc. with flexibility with sealing compound. Easily aging due to these materials, can cause leaking and the inflow of back side water, that is water spray phenomenon can occur. If studying for a second time courses one has flunked with loading material of rubber, then cutting concrete seam place and joint gap can be made to become big, the executive cost of this method is higher simultaneously.
Also have to adopt and dig out expansion joint and meet water the weighting material of the thick 2-5cm in face, behind cleaning seam face, by the surface watertight seal scheme of pitch ointment or polyethylene clay joint filling. If but it is not clean with base face in this kind for the treatment of process seam, or clay is excessively long for the heat-up time when dissolving, temperature control is improper, often cause clay charing and lose elasticity, cause concrete bonding with clay not good, easily form new leak paths, make stagnant water effect not good, the object that long-term safety is run can not be played.
In addition, also have at the surface of expansion joint packing material of water channel and the priming paint of left and right sides brushing one fixed width, at the mesh-shape Tai Jibu of low-elongation material-making of configuration above, within the scope of width, brush certain thickness polyurethane material afterwards, thus prevent the breakage at expansion joint. But, owing to the distortion of Tai Jibu is limited, relative complex of not only constructing, and also because repeatedly stretching according to the continuous change of concrete temperature every day, the weather resistance at expansion joint also is difficult to ensure.
In sum, use string rubber sealing arrangement and method for construction, by the surface watertight seal scheme of pitch ointment or polyethylene clay joint filling and mesh-shape Tai Jibu Polyurethane surface closure solutions, all do not meet the requirement of ease of Use, and the material used does not meet the requirement of project durability and deformability.
Summary of the invention
The technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, it is provided that the water sealing structure at a kind of expansion joint, and its sealing performance is good, weather resistance and impact-resisting wear-resisting strong, have the expansion joint 3 D deformation ability that adapts to, construction is simple.
The technical solution of the present invention is: the water sealing structure at this kind of expansion joint, the sidewall at expansion joint and on along being provided with prime coat, in expansion joint, fill elastic water-proof obturator, be provided with polyurea elastomer water-proof coating on the upper edge at expansion joint.
Additionally providing the spray forming this water sealing structure and fill out engineering method, this spray is filled out engineering method and is comprised the following steps:
(1) sidewall at expansion joint and on along brushing priming paint;
(2) in expansion joint, elastic water-proof obturator is filled out in filling;
(3) polyurea elastomer water-proof coating is scraped in the upper of expansion joint along spraying or painting.
The present invention by the sidewall at expansion joint and on along being provided with prime coat, elastic water-proof obturator is filled in expansion joint, it is provided with polyurea elastomer water-proof coating on the upper edge at expansion joint, owing to priming paint and base surface concrete and polyurea elastomer can well bond, thus both there is good telescopic resilience, there is again firmly cohesive force, it is to increase the stagnant water effect at expansion joint so that it is sealing performance is more superior. Elastic water-proof obturator and be provided with the weather resistance of the material of polyurea elastomer water-proof coating on the upper edge at expansion joint and impact-resisting wear-resisting strong, have and adapt to expansion joint 3 D deformation ability, it is simple that engineering method construction is filled out in the spray forming this water sealing structure, process.
Accompanying drawing explanation
Fig. 1 shows the structural representation of an embodiment of the water sealing structure at the expansion joint according to the present invention.
Fig. 2 shows the structural representation of another embodiment of the water sealing structure at the expansion joint according to the present invention.
Embodiment
As shown in Figure 1, the water sealing structure at this kind of expansion joint, the sidewall at expansion joint 5 and on along being provided with prime coat 3, in expansion joint, fill elastic water-proof obturator 4, along Spray Polyurea Elastomer water-proof coating 1 on expansion joint. Expansion joint can be formed by concrete seven.
Preferably, elastic water-proof obturator is arranged on expansion joint and meets water the top in direction. Owing to elastic water-proof obturator is only arranged on the top in the direction that meets water, and it not be used in other position and arrange so that the materials of elastic water-proof obturator are little, thus reduce costs well.
Preferably, the bottom 2 of elastic water-proof obturator is upwards recessed shape. So not only change force structure, and when pressure-bearing is identical, it is flat shape material saving more than the bottom of elastic water-proof obturator, thus reduces costs. Preferably, the upwards recessed shape of elastic water-proof obturator is semicircle. First inserting elastic circular duct (can be hollow plastic round tube) in expansion joint during construction, then elastic water-proof obturator is filled out in filling, construction is simple like this. And owing to plastic round tube has elasticity, and cheap, so stagnant water effect is good, pressure-bearing is even, cost is low.
Preferably, between elastic water-proof obturator 4 and polyurea elastomer water-proof coating 1, it is provided with the isolation plate 8 making the two non-caked.
Preferably, elastic water-proof obturator 4 and polyurea elastomer water-proof coating 1 bond together.
Preferably, as shown in Figure 2, the top in the direction that meets water at expansion joint 5 be provided with expand groove 9, like this can better waterproof and adapt to 3 D deformation.
Preferably, the single side or the both sides that are close in polyurea elastomer water-proof coating form groove 6, surface polyurea coating is firmly taken root and improves cohesive force and impact-resisting wear-resisting ability.
Preferably, the upstream section of single side groove 6 at expansion joint.
Preferably, elastic water-proof obturator is polyurea elastomer. Other flexible waterproof materials such as urethane can certainly be used.
Two component polyurea elastomer has 100% solid content, not containing any volatile organic matter (VOC), environmentally friendly, is green material. The feature of two-component polyurea is, fast setting, can spray mo(u)lding on arbitrary surface, inclined-plane and vertical surface, do not produce stream hang phenomenon. There is excellent physical and mechanical property, snappiness, wear resistance, ageing-resistant, protection against corrosion. There is good cohesive force, can spray mo(u)lding on any base materials such as steel, timber, concrete.
So-called " spray is filled out " refers to: carries out filling in expansion joint and fills out flexible materials, scrapes polyurea elastomer material in the spraying of surface, expansion joint or painting.
Preferably, the length of polyurea elastomer water-proof coating is less than or equals the length of the prime coat on the upper edge at expansion joint, and such adhesive property is better.
Additionally providing the spray forming this water sealing structure and fill out engineering method, this spray is filled out engineering method and is comprised the following steps:
(1) sidewall at expansion joint and on along brushing priming paint;
(2) in expansion joint, elastic water-proof obturator is filled out in filling;
(3) polyurea elastomer water-proof coating is scraped in the upper of expansion joint along spraying or painting.
The present invention by the sidewall at expansion joint and on along being provided with prime coat, meet water at expansion joint direction top fill elastic water-proof obturator, it is provided with polyurea elastomer water-proof coating on the upper edge at expansion joint, owing to priming paint and polyurea elastomer can well bond, thus both there is good telescopic resilience, there is again firmly cohesive force, it is to increase the stagnant water effect at expansion joint so that it is sealing performance is more superior. Elastic water-proof obturator and strong along the materials ' durability of Spray Polyurea Elastomer water-proof coating and impact-resisting wear-resisting on expansion joint, it is simple that engineering method construction is filled out in the spray forming this water sealing structure, process.
Preferably, step (2) is middle first inserts the elastic circular duct (can be hollow plastic round tube) making bottom form upwards recessed arc in expansion joint, then elastic water-proof obturator is filled out in filling. The upwards recessed shape making elastic water-proof obturator like this is semicircle, and plastic round tube has elasticity, and cheap.
Certainly, also have one comparatively simply to implement mode and namely directly it is provided with one layer of polyurea elastomer coating on surface, expansion joint.
In sum; it it is only the better embodiment of the present invention; the present invention not does any restriction in form, and every any simple modification, equivalent variations and modification above embodiment done according to the technical spirit of the present invention, all still belongs to the protection domain of technical solution of the present invention.
Claims (6)
1. the water sealing structure at a hydraulic structure expansion joint, it is provided with prime coat (3) on sidewall and the upper edge of expansion joint (5), in expansion joint, fill elastic water-proof obturator (4), it is provided with polyurea elastomer water-proof coating (1) on the upper edge at expansion joint;
Elastic water-proof obturator is arranged on expansion joint and meets water the top in direction, and with two side prime coat strong bond;
The bottom (2) of elastic water-proof obturator is upwards recessed arc;
It is characterized in that: between elastic water-proof obturator (4) and polyurea elastomer water-proof coating (1), be provided with the isolation plate (8) making the two non-caked;
It is provided with expands groove (9) on expansion joint (5) the meet water top in direction.
2. the water sealing structure at hydraulic structure expansion joint according to claim 1, it is characterised in that: the single side or the both sides that are close in polyurea elastomer water-proof coating form groove (6).
3. the water sealing structure at hydraulic structure expansion joint according to claim 2, it is characterised in that: the upstream section of single side groove at expansion joint.
4. the water sealing structure at hydraulic structure expansion joint according to claim 1, it is characterised in that: elastic water-proof obturator is polyurea elastomer.
5. engineering method is filled out in the spray of the water sealing structure forming hydraulic structure expansion joint according to claim 1, it is characterised in that: this spray is filled out engineering method and is comprised the following steps:
(1) sidewall at expansion joint and on along brushing priming paint;
(2) in expansion joint, elastic water-proof obturator is filled out in filling;
(3) polyurea elastomer water-proof coating is scraped in the upper of expansion joint along spraying or painting.
6. engineering method is filled out in the spray of the water sealing structure at formation hydraulic structure expansion joint according to claim 5, it is characterised in that: step (2) first inserts elastic circular duct in expansion joint, then elastic water-proof obturator is filled out in filling.
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| CN201310606513.2A CN103696396B (en) | 2013-11-25 | 2013-11-25 | Engineering method is filled out in the water sealing structure at a kind of expansion joint and the spray forming this water sealing structure |
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| CN201310606513.2A CN103696396B (en) | 2013-11-25 | 2013-11-25 | Engineering method is filled out in the water sealing structure at a kind of expansion joint and the spray forming this water sealing structure |
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| CN103696396B true CN103696396B (en) | 2016-06-08 |
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| CN106116252B (en) * | 2016-06-20 | 2018-08-31 | 北京市南水北调东干渠管理处 | The filleting anti-seepage method of high resiliency antiseepage filler and concrete member expansion joint |
| CN106320296A (en) * | 2016-11-02 | 2017-01-11 | 广西大学 | Basalt fiber grid reinforced lining structure for high ground temperature high-pressure hydraulic tunnel |
| CN106869084A (en) * | 2017-03-14 | 2017-06-20 | 辽宁华三建设工程技术有限公司 | A kind of high tenacity filleting waterstop and its construction method for channel structure |
| CN107345406B (en) * | 2017-08-14 | 2019-12-13 | 洛阳双瑞特种装备有限公司 | waterproof sealing method for deformation joint of pipe gallery |
| CN107338765B (en) * | 2017-08-22 | 2023-01-24 | 中国水利水电科学研究院 | Surface prefabricated part structure for stopping water in expansion joint and construction method thereof |
| CN107313404A (en) * | 2017-08-24 | 2017-11-03 | 北京中水科海利工程技术有限公司 | A kind of expansion joint water sealing structure |
| CN109487756A (en) * | 2018-01-20 | 2019-03-19 | 深圳市深水水务咨询有限公司 | The repairing structure and its construction method at the expansion joint of pressurized water transmission box culvert |
| CN108221866B (en) * | 2018-01-23 | 2023-11-17 | 中国水利水电科学研究院 | Panel joint surface layer flat-covering type flexible water stop structure in severe cold region and mounting method |
| CN109989490A (en) * | 2019-05-09 | 2019-07-09 | 国家电网有限公司 | Discharge structure expansion joint surface watertight seal resistant abrasion safeguard structure and construction method |
| CN112359675B (en) * | 2020-10-20 | 2022-03-11 | 河南省交通勘察设计有限公司 | Pavement concrete expansion reinforcing belt and construction method thereof |
| CN114197786A (en) * | 2021-11-18 | 2022-03-18 | 深圳市奇信集团股份有限公司 | Ceramic tile joint filling structure and construction method thereof |
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Inventor after: Li Bingqi Inventor after: Zhang Guoxin Inventor after: Jiang Yunhui Inventor after: Zhou Yuexia Inventor after: Liu Xiaonan Inventor after: Zhang Yuchi Inventor before: Li Bingqi Inventor before: Zhang Guoxin Inventor before: Jiang Yunhui Inventor before: Zhou Yuexia |
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