CN204435318U - Be applied to the slab joint top layer application type water-stopping structure of Concrete Face Rockfill Dam - Google Patents

Be applied to the slab joint top layer application type water-stopping structure of Concrete Face Rockfill Dam Download PDF

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Publication number
CN204435318U
CN204435318U CN201420678015.9U CN201420678015U CN204435318U CN 204435318 U CN204435318 U CN 204435318U CN 201420678015 U CN201420678015 U CN 201420678015U CN 204435318 U CN204435318 U CN 204435318U
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China
Prior art keywords
slab
seam
application type
type water
face
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Expired - Fee Related
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CN201420678015.9U
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Chinese (zh)
Inventor
孙志恒
杨伟才
何旭升
鲍志强
甄理
马宇
李守辉
夏世法
李萌
赵波
李敬玮
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China Institute of Water Resources and Hydropower Research
Beijing IWHR KHL Co Ltd
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China Institute of Water Resources and Hydropower Research
Beijing IWHR KHL Co Ltd
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Priority to CN201420678015.9U priority Critical patent/CN204435318U/en
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Abstract

The utility model provides a kind of application type water-stopping structure being applied to the slab joint top layer of Concrete Face Rockfill Dam, and it comprises: the flexible coating that elastic supporting member for supporting optical member, the moulding caulking material of filling continuously and field-applied are shaping.This elastic supporting member for supporting optical member is located in joint surface V-type groove, has the effect supporting top plasticity caulking material; This moulding caulking material of filling continuously, be coated on elastic supporting member for supporting optical member locking support portion and by joint sealing; The flexible coating that this field-applied is shaping, to be coated on outside moulding caulking material and to be isolated from the outside by moulding caulking material.Water-stopping structure of the present utility model has that surface protection is reliable, anti-seepage effect and good endurance, be easy to the advantages such as construction, remarkable in economical benefits.

Description

Be applied to the slab joint top layer application type water-stopping structure of Concrete Face Rockfill Dam
Technical field
The utility model relates to a kind of top layer application type water-stopping structure being applied to the slab joint of Concrete Face Rockfill Dam, particularly relate to a kind of utilize plasticity caulking material and field-applied shaping flexible coating combination, as face joint water stop structure.
Background technology
The advantages such as Concrete Face Rockfill Dam has reduced investment, the duration is short, safety good, easy construction, strong adaptability, obtain general promotion and application at home and abroad.But in concrete slab seepage prevention system, joint seal remains weak link.China's current seam surface watertight seal surface generally adopts flexible waterproof sheet as protective cover plate, and conventional has Ethylene Propylene Terpolymer (EPDM) plate, rubber tile and composite S B rubber tile etc., and is fixed on the seam both sides of concrete slab by expansion bolt.But it has following deficiency:
One, in construction of concrete face slab, the planeness on surface is difficult to control, and flatness error is usually at more than 1cm, and expansion bolt spacing is usually minimum is 15cm, there is gap between cover plate and concrete surface.
Its two, concrete slab periphery fissure sealing is tortuous changeable, there is multiple T-shaped or L-type knuckle, and at work progress center tap, customized and angle steel is installed and is difficult to ensure the quality of products, and the existence of gap and defect can increase storehouse seepage amount.
Its three, protective cover plate is fixed on concrete surface by bolt and angle steel, fastening bolt construction technology bother, it is more difficult to install, and is difficult to ensure the quality of products.
Its four, easily there is freezing drawing peeled-off at cold district water level variation portion in bolt, and steel plate or angle bar press strip resistant to rust ability poor, for a long time in water and SEA LEVEL VARIATION district get rusty easily, durability is poor.
Utility model content
In order to solve the deficiencies in the prior art part, the utility model object is the top layer application type water-stopping structure being applied to Face-Slab of CFRD seam proposing a kind of improvement, not only can substitute existing water-stopping structure, and, better whole structure can be obtained, especially be embodied in: lower to the flatness requirement on surface (especially joint location) in construction of concrete face slab, to the good sealing effect of out-of-flatness position, the good sealing effect of the transition location of butt joint, construction is simple, work progress does not destroy concrete slab, good frost resistance, larger deflection can be adapted to, anti-Three-direction deformation ability is strong, without pressing plate and crab-bolt corrosion phenomena, good endurance.
In order to achieve the above object, the main technical schemes that the utility model provides comprises:
Be applied to a top layer application type water-stopping structure for the slab joint of Concrete Face Rockfill Dam, it comprises:
Elastic supporting member for supporting optical member, this elastic supporting member for supporting optical member has the locking support portion be located in joint surface V-type groove;
The moulding caulking material of continuous filling, its be coated on elastic supporting member for supporting optical member locking support portion and by joint sealing; And
The flexible coating that field-applied is shaping, it to be coated on outside moulding caulking material and to be isolated from the outside by moulding caulking material.
Wherein, one deck or two-layer above tire base cloth is provided with in described flexible coating.
Wherein, described flexible coating has the extension extending to concrete slab surface, and the extension being preferably extension is of a size of 20cm ~ 30cm.
Wherein, described flexible coating is greater than the thickness on concrete slab surface at the coating thickness on plasticity caulking material surface, is preferably 3mm at the thickness on concrete slab surface.
Wherein, described flexible coating is relevant with height of dam at the coating thickness on plasticity caulking material surface, when height of dam is less than 50m, and the preferred 3mm of flexible coating thickness; During height of dam 50m ~ 100m, the preferred 3mm ~ 4mm of flexible coating thickness; During height of dam 100m ~ 200m, the preferred 4mm ~ 5mm of flexible coating thickness; When height of dam is greater than 200m, the preferred 5mm ~ 6mm of flexible coating thickness.
Wherein, described moulding caulking material has the thickness of gradual change, and wherein, the position thickness of corresponding seam is the thickest, and gradually thin to the thickness in the direction away from seam, the maximum gauge being preferably described moulding caulking material equals 1/2nd of the filling width of described moulding caulking material.
Wherein, it is good that described moulding caulking material has mobile performance, under effect of water pressure, can flow in seam, shutoff seepage channel.
Wherein, described support member is rubber bar or sticking plaster.
Above-mentioned any one be applied to the application type water-stopping structure of Concrete Face Rockfill Dam concrete slab seam, be provided with adhesives between the extension of described flexible coating and concrete slab surface, the thickness being preferably adhesives is less than 0.2mm.
Wherein, described adhesives can penetrate concrete surface, and the performance having wet surface bonding, ensure that the adhesive strength of flexible coating and concrete slab is greater than concrete slab self body tensile strength, and good endurance.
Above-mentioned any one be applied to the application type water-stopping structure of Concrete Face Rockfill Dam concrete slab seam, edge position received by described flexible coating and concrete slab is del, ensures that receiving edge position coating layer thickness is greater than 2 ~ 3mm.
Above-mentioned any one be applied to the application type water-stopping structure of Concrete Face Rockfill Dam concrete slab seam, the shaping flexible coating material of described field-applied is polyureas series material.
Above-mentioned any one be applied to the application type water-stopping structure of Concrete Face Rockfill Dam concrete slab seam, the tensile strength of described polyureas series material is greater than 15MPa, elongation at break is greater than 300%, water absorption rate is less than 5%, and impact-resisting wear-resisting and ageing-resistant.
Above-mentioned water-stopping structure, can place on glue rod, glue rod along seam and cover plastic sealing filler, butt joint periphery concrete surface carries out polishing, cleaning, dry rear brushing special interface agent, the flexible high-performance protective coating of direct blade coating first floor after interfacial agents surface drying, the flexible high-performance protective coating of the brushing second layer again after surface drying, and at seam areas composite tyre base cloth, brush several all over flexible high-performance protective coating (thickness according to design coating determines brushing pass) after surface drying again, until seam areas coating layer thickness reaches design load.Receipts limit between flexible high-performance protective coating and concrete scrap (bridge) processes, and edge is polished into triangular form, edge degree of depth 2mm ~ 3mm, and the flexible high-performance protective coating of blade coating of edge brushing and concrete seamlessly transit, in order to avoid edge coating is too thin.
The beneficial effects of the utility model are:
1. pass through the shaping flexible coating of field-applied as overcoat, substitute and prefabricated panels is installed.Flexible coating realizes by many kinds of measures such as in-situ spraying, blade coating or brushings.This structure can adapt to various complicated seam face, and construction is simple, and waterstop sealing is satisfactory for result, and there is not cogging problem.
2., between the flexible coating and concrete surface of coating molding, first close with plasticity caulking material opposite joint face.Plasticity caulking material can supporting flexible coating; The existence of plasticity caulking material, makes flexible coating all have larger extensibility at slab joint three-dimensional simultaneously.This measure had both improved the hydraulic pressure resistance ability of the overall water-stopping structure of slab joint, increased again the ability that it adapts to seam sliding deformation.
3. the flexible coating that field-applied is shaping, by adding pliable and tough cloth and/or tire base cloth strengthens its intensity, can further improve hydraulic pressure resistance ability and the external force resistance damage capability of integrated seepage-proofing structure, can ensure flexible coating thickness and uniformity simultaneously.
4. be stuck in sealing with the bar that rubber bar and/or sticking plaster etc. are pliable and tough as support component, plasticity caulking material can be limited under high hydraulic pressure effect, flow in seam chamber, improve hydraulic pressure resistance ability and the external force resistance damage capability of overall water-stopping structure further.
5. by arranging rubber bar or sticking plaster in joint surface V-type groove, the tensile strength of plasticity caulking material can be significantly improved further, and improve its ductility in all directions simultaneously, and further, it makes flexible coating have better three-dimensional ductility, and the overall performance of water-stopping structure is significantly improved.
Accompanying drawing explanation
Fig. 1 is the utility model Face-Slab of CFRD seam application type water-stopping structure schematic diagram.
Detailed description of the invention
The application type water-stopping structure being applied to the slab joint of Concrete Face Rockfill Dam of the present utility model; it comprises the support member at the slab joint top being arranged at Concrete Face Rockfill Dam; the coated sealing packed layer in described support member periphery, described sealing packed layer periphery arranges flexible protective coating.Closed packed layer can be plasticity caulking material, and protective coating can be the shaping flexible coating of field-applied.Described flexible coating material used is flowable liquid state before coating, becomes flexible solid film after being coated in body surface a period of time.Described flexible coating material used can be polyureas series material.Pliable and tough cloth and/or tire base cloth can be added with to strengthen its intensity in the flexible coating that described field-applied is shaping.Special bonding agent can there be ensure both bonding closely between flexible coating with concrete surface.Described flexible support bar can be rubber bar and/or sticking plaster.
It can be constructed by the method: on concrete slab, first be placed on slab joint seam face with pliable and tough rubber bar and/or sticking plaster as support component, with plasticity caulking material, concrete slab seam seam surface, face is closed again, then in the concrete slab external coating special bonding agent of caulking material and seam both sides one fixed width, after bonding agent initial set, again at adhesive surface and plastic filler surface field-applied flexible coating, flexible coating is as overcoat.During on-site layering coating flexible coating, by add pliable and tough cloth and/tire base cloth strengthens flexible coating intensity.
For the ease of understanding, the utility model is further described by detailed description of the invention below in conjunction with accompanying drawing.
See Fig. 1, the water-stopping structure schematic diagram of the utility model first embodiment, a kind of application type water-stopping structure being applied to the slab joint 2 of Concrete Face Rockfill Dam, it comprises: elastic supporting member for supporting optical member 7, plasticity caulking material 3 and flexible coating 4.
Described elastic supporting member for supporting optical member 7 is the sleeping bar (as rubber and/or plastic material) being located at seam V-type groove 2 opening portion.The bar pliable and tough with rubber bar and/or sticking plaster etc. is stuck in sealing as support component, can limit plasticity caulking material 3 under high hydraulic pressure effect, flows in seam chamber, improves hydraulic pressure resistance ability and the external force resistance damage capability of overall water-stopping structure further.It typically is cylindric, its diameter is greater than seam 2 width more than 5 times, and after being placed in the top of seam 2, a part (being generally fraction) nature or brute force are embedded in seam 2, and another part (being generally major part) is exposed to outside seam 2.Because cross section is circular, and major part is exposed to outside seam 2, therefore, can adaptive automatic filling when seam 2 broadens, be placed in seam 2 top all the time, and can effective closure seam 2, form the support to plasticity caulking material 3; Due to extended along seam 2 opening portion, therefore, when staggered displacement (bearing of trend of seam 2 opening) occurs in seam 2 both sides, substantially can not affect the performance of its various effect, great displacement can be resisted.Because cross section is circular, therefore, when staggered displacement (bearing of trend of seam 2 degree of depth) occurs in seam 2 both sides, substantially can not affect the performance of its various effect, larger displacement can be resisted.
Described plasticity caulking material 3 is fill continuously, and it is coated on elastic supporting member for supporting optical member 7 and seam 2 is closed.Between the flexible coating 4 and concrete surface of coating molding, first close with plasticity caulking material 3 opposite joint face, make plasticity caulking material 3 can supporting flexible coating 4; The existence of plasticity caulking material 3, makes flexible coating 4 all have larger extensibility at slab joint 2 three-dimensional simultaneously.This measure had both improved the hydraulic pressure resistance ability of the overall water-stopping structure of slab joint 2, increased again the ability that it adapts to seam 2 sliding deformation.
Wherein, described plasticity caulking material 3 has the thickness of gradual change.Wherein, the position thickness of corresponding seam 2 is the thickest, and gradually thin to the thickness in the direction away from seam 2.The maximum gauge being preferably described plasticity caulking material 3 is not more than 1/2nd of the filling width of described plasticity caulking material 3, to improve the overall performance of plasticity caulking material 3.
Wherein, what the opening portion of described seam 2 had a V-arrangement gradually opens extension, and described plasticity caulking material 3 is located therein.
Described flexible coating 4 is that field-applied is shaping, and it to be coated on outside plasticity caulking material 3 and to be isolated from the outside by plasticity caulking material 3.Flexible coating 4 realizes by many kinds of measures such as in-situ spraying, blade coating or brushings.This structure can adapt to various complicated seam face, and construction is simple, and waterstop sealing is satisfactory for result, and there is not cogging problem.
Wherein, described flexible coating 4 has the extension extending to concrete slab 1 surface.The extension being preferably extension is of a size of 20cm ~ 30cm.
Wherein, adhesives 6 is provided with between the extension of described flexible coating 4 and concrete slab 1 surface.The thickness being preferably adhesives 6 is 0.2mm, to obtain best adhesive effect.
Wherein, one deck or two-layer above tire base cloth 5 is provided with in described flexible coating 4.
It can adopt the method to construct: place glue rod along seam 2, glue rod covers plasticity caulking material 3, butt joint 2 periphery concrete surface is polished, cleaning, dry the special interface agent of rear brushing as adhesives 6, the flexible high-performance protective coating of direct blade coating first floor after interfacial agents surface drying, the flexible high-performance protective coating of the brushing second layer again after surface drying, and tire base cloth 5 is pasted at seam 2 position, brush several all over flexible high-performance protective coating (determining brushing pass according to the design thickness of flexible coating 4) after surface drying again, until seam 2 position flexible coating 4 thickness reaches design load.Receipts limit between flexible high-performance protective coating and concrete scrap (bridge) processes, and edge is polished into triangular form, edge degree of depth 2mm ~ 3mm, and the flexible high-performance protective coating of blade coating of edge brushing and concrete seamlessly transit, in order to avoid edge coating is too thin.
Water-stopping structure of the present utility model, has that surface protection is reliable, anti-seepage effect and good endurance, is easy to the advantages such as construction, remarkable in economical benefits; And flexible high-performance protective coating separately as independently Waterproof structural course together, can substantially increase the reliability of face joint water stop, and is convenient to maintenance, be worthy of popularization as top layer protective coating.

Claims (19)

1. be applied to an application type water-stopping structure for Face-Slab of CFRD seam, it is characterized in that comprising:
Elastic supporting member for supporting optical member (7), this elastic supporting member for supporting optical member has the locking support portion be located in joint surface V-type groove;
The moulding caulking material (3) of continuous filling, its be coated on elastic supporting member for supporting optical member locking support portion and by joint sealing; And
The flexible coating (4) that field-applied is shaping, it to be coated on outside moulding caulking material and to be isolated from the outside by moulding caulking material.
2. be applied to the application type water-stopping structure of Face-Slab of CFRD seam as claimed in claim 1, it is characterized in that: in described flexible coating (4), be provided with one deck or two-layer above tire base cloth (5).
3. be applied to the application type water-stopping structure of Face-Slab of CFRD seam as claimed in claim 1, it is characterized in that: described flexible coating has the extension extending to concrete slab surface.
4. be applied to the application type water-stopping structure of Face-Slab of CFRD seam as claimed in claim 3, it is characterized in that: the extension of described extension is of a size of 20cm ~ 30cm, thickness is 3mm.
5. be applied to the application type water-stopping structure of Face-Slab of CFRD seam as claimed in claim 1, it is characterized in that: described flexible coating (4) is relevant with height of dam at the coating thickness on plasticity caulking material surface, when height of dam is less than 50m, flexible coating (4) thickness 3mm; During height of dam 50m ~ 100m, flexible coating thickness 3mm ~ 4mm; During height of dam 100m ~ 200m, flexible coating thickness 4mm ~ 5mm; When height of dam is greater than 200m, flexible coating thickness 5mm ~ 6mm.
6. the application type water-stopping structure being applied to Face-Slab of CFRD seam according to any one of claim 2 ~ 5, is characterized in that: be provided with adhesives (6) between the extension of described flexible coating (4) and concrete slab (1) surface.
7. be applied to the application type water-stopping structure of Face-Slab of CFRD seam as claimed in claim 6, it is characterized in that: the thickness of adhesives is less than 0.2mm.
8. the application type water-stopping structure being applied to Face-Slab of CFRD seam according to any one of claim 2 ~ 5 and 7, it is characterized in that: edge position received by described flexible coating (4) and concrete slab (1) is del, ensure that receiving edge position coating layer thickness is greater than 2 ~ 3mm.
9. be applied to the application type water-stopping structure of Face-Slab of CFRD seam as claimed in claim 6, it is characterized in that: edge position received by described flexible coating (4) and concrete slab (1) is del, ensure that receiving edge position coating layer thickness is greater than 2 ~ 3mm.
10. be applied to the application type water-stopping structure of Face-Slab of CFRD seam as claimed in claim 6, it is characterized in that: described adhesives (6) penetrates concrete surface, and flexible coating (4) is greater than self body tensile strength of concrete slab (1) with the adhesive strength of concrete slab (1).
The 11. application type water-stopping structures being applied to Face-Slab of CFRD seam as claimed in claim 7, it is characterized in that: described adhesives (6) penetrates concrete surface, and flexible coating (4) is greater than self body tensile strength of concrete slab (1) with the adhesive strength of concrete slab (1).
The 12. application type water-stopping structures being applied to Face-Slab of CFRD seam as claimed in claim 9, it is characterized in that: described adhesives (6) penetrates concrete surface, and flexible coating (4) is greater than self body tensile strength of concrete slab (1) with the adhesive strength of concrete slab (1).
13. application type water-stopping structures being applied to Face-Slab of CFRD seam according to any one of claim 2 ~ 5 and 7, is characterized in that: the shaping flexible coating material of described field-applied is polyureas series material.
The 14. application type water-stopping structures being applied to Face-Slab of CFRD seam as claimed in claim 6, is characterized in that: the shaping flexible coating material of described field-applied is polyureas series material.
The 15. application type water-stopping structures being applied to Face-Slab of CFRD seam as claimed in claim 13, is characterized in that: the tensile strength of described polyureas series material is greater than 15MPa, elongation at break is greater than 300%, water absorption rate is less than 5%.
The 16. application type water-stopping structures being applied to Face-Slab of CFRD seam as claimed in claim 14, is characterized in that: the tensile strength of described polyureas series material is greater than 15MPa, elongation at break is greater than 300%, water absorption rate is less than 5%.
The 17. application type water-stopping structures being applied to Face-Slab of CFRD seam as claimed in claim 1, it is characterized in that: described moulding caulking material has the thickness of gradual change, wherein, the position thickness of corresponding seam is the thickest, and gradually thin to the thickness in the direction away from seam.
The 18. application type water-stopping structures being applied to Face-Slab of CFRD seam as claimed in claim 16, is characterized in that: the maximum gauge of described moulding caulking material equals 1/2nd of the filling width of described moulding caulking material.
The 19. application type water-stopping structures being applied to Face-Slab of CFRD seam as claimed in claim 1, is characterized in that: described support member (7) is rubber bar or sticking plaster.
CN201420678015.9U 2014-11-13 2014-11-13 Be applied to the slab joint top layer application type water-stopping structure of Concrete Face Rockfill Dam Expired - Fee Related CN204435318U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625271A (en) * 2015-12-31 2016-06-01 国家电网公司 Method for repairing water stop of vertical joint of rock-fill dam concrete face slab
CN108221866A (en) * 2018-01-23 2018-06-29 中国水利水电科学研究院 Severe cold area slab joint surface layer, which is put down, covers type flexibility water sealing structure and installation method
CN110004886A (en) * 2019-05-15 2019-07-12 中国电建集团中南勘测设计研究院有限公司 Asphaltic concrete core wall basement construction method and its structure
CN110528465A (en) * 2019-09-20 2019-12-03 中国水利水电科学研究院 A kind of novel water-stop covering plate structure and its construction method
CN111455937A (en) * 2020-04-15 2020-07-28 中国水利水电科学研究院 Flexible water-stopping and ice-preventing structure for joint surface layer of concrete panel and mounting 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
CN112942251A (en) * 2021-03-19 2021-06-11 北京中水科海利工程技术有限公司 Joint surface layer water stop structure of rock-fill dam panel, construction process and rock-fill dam
CN113914267A (en) * 2021-11-11 2022-01-11 中国水利水电科学研究院 Compressible water stop structure for joint surface layer of concrete panel in severe cold area and construction method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625271A (en) * 2015-12-31 2016-06-01 国家电网公司 Method for repairing water stop of vertical joint of rock-fill dam concrete face slab
CN108221866A (en) * 2018-01-23 2018-06-29 中国水利水电科学研究院 Severe cold area slab joint surface layer, which is put down, covers type flexibility water sealing structure and installation method
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
CN110004886A (en) * 2019-05-15 2019-07-12 中国电建集团中南勘测设计研究院有限公司 Asphaltic concrete core wall basement construction method and its structure
CN110528465A (en) * 2019-09-20 2019-12-03 中国水利水电科学研究院 A kind of novel water-stop covering plate structure and its construction method
CN111455937A (en) * 2020-04-15 2020-07-28 中国水利水电科学研究院 Flexible water-stopping and ice-preventing structure for joint surface layer of concrete panel and mounting 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
CN112942251A (en) * 2021-03-19 2021-06-11 北京中水科海利工程技术有限公司 Joint surface layer water stop structure of rock-fill dam panel, construction process and rock-fill dam
CN113914267A (en) * 2021-11-11 2022-01-11 中国水利水电科学研究院 Compressible water stop structure for joint surface layer of concrete panel in severe cold area and construction method

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