CN104060576A - Connecting structure and connecting method for expansion joint water-stop belt of hydraulic concrete member - Google Patents
Connecting structure and connecting method for expansion joint water-stop belt of hydraulic concrete member Download PDFInfo
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- CN104060576A CN104060576A CN201410281372.6A CN201410281372A CN104060576A CN 104060576 A CN104060576 A CN 104060576A CN 201410281372 A CN201410281372 A CN 201410281372A CN 104060576 A CN104060576 A CN 104060576A
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- waterstop
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- overcoat
- expansion joint
- hydraulic structure
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Abstract
The invention provides a connecting structure and a connecting method for an expansion joint water-stop belt of a hydraulic concrete member. The connecting structure comprises a protection layer and a sealing filling layer, wherein an expansion joint at the broken part of the water-stop belt is filled with the sealing filling layer; the protection layer coats the sealing filling layer and the outer side of the end of the broken part of the water-stop belt, and is combined with the end. A seam on the broken part is preferably enclosed by the sealing filling layer, so that the protection layer can be supported as required. The protection layer can be molded directly by coating a flexible film material on site in order to be tightly combined with the end of the water-stop belt. An activating agent and a bonding agent are preferably coated between the protection layer and the water-stop belt. The connection problem at the broken part of the expansion joint water-stop belt of the hydraulic concrete member can be solved. Compared with the process of replacing the water-stop belt by chiseling in the conventional way, the connecting method is simple and feasible; moreover, the water-stop belt has perfect performance after being connected.
Description
Technical field
The present invention relates to a kind of concrete for hydraulic structure member expansion joint waterstop and repair or syndeton, and corresponding method of attachment.
Background technology
On the concrete component of the hydraulic structures such as power station, canal for water conveyance, water-conveyance tunnel and water delivery aqueduct, conventionally can be provided with shrinkage joint.Shrinkage joint refers to the gap impact of structure being arranged in structure for adaptation material swell-shrinking deformation.The conventional measure that solves shrinkage joint antiseepage both at home and abroad, is that the both wings of rubber fastening band or plastics waterstop are cast in respectively in the concrete of both sides, shrinkage joint, or utilizes band steel and bolt that rubber fastening band or plastics waterstop are twisted and are pressed in sealing both sides across seam.As shown in Figure 1, be that the both wings of waterstop 2 are cast in respectively in the concrete 4 of 5 both sides, shrinkage joint, it has certain distance from concrete external surface.The connected mode of ordinary rubber waterstop or plastics waterstop is normally utilized professional connector, as sweating welder vulcanizes connection or thermally coupled; When after hydraulic structure operation for many years, may there is fracture and damaged in these waterstops, need to repair these fractures and breakage.In the time connecting the waterstop of local fracture and breakage, limited because of operating space, be difficult to implement with professional connector.
To the processing requirements of these fractures and damaged waterstop, want sealing good seepage-proof property on the one hand, can bear the water pressure of respective degrees; On the other hand, because shrinkage joint seam width is in dynamic variable condition, must make the structure after repairing can adapt to its distortion.Therefore, concrete for hydraulic structure member expansion joint waterstop reparation connection processing is technological difficulties in water conservancy project field always; When exist tens meters even up to a hundred meters of head pressures do the used time, it is particularly outstanding that this difficult point becomes.
The conventional measure addressing this problem is both at home and abroad that whole piece waterstop is removed and changed, and wastes time and energy, and material resources and human cost are too high.
To sum up, in order to solve the deficiencies in the prior art part, the present invention proposes a kind of concrete for hydraulic structure member expansion joint waterstop syndeton and method of attachment.
Summary of the invention
For solving the problems of the technologies described above, concrete for hydraulic structure member expansion joint waterstop syndeton of the present invention, it comprises an overcoat and a sealing packed layer, sealing packed layer is filled in the shrinkage joint of waterstop breakage, be preferably and close this place's sealing, this overcoat is coated on the outside, termination of sealing packed layer and this waterstop breakage, and combines with this termination.
Preferably, sealing packed layer is flexible caulking material.
Flexible caulking material is conventional caulking material in a class civil works, and its characteristic is to keep certain weak degree, does not affect normally flexible reaction of concrete component.
Preferably, this overcoat is by the moulding of flexible film material institute.
The characteristic of selected flexible film material is that it has pliability and higher hot strength, preferably water proofing property and anticorrosive property.
Preferably, this overcoat further comprises the reinforcing fiber of being located in this flexible film material.
Preferably, this overcoat is the moulding by applying flexible film material in the outside of sealing packed layer and this waterstop termination in scene.
Preferably, this flexible film material is polyureas series material.
Preferably, the width of this overcoat is greater than the width of this waterstop, and the termination of this overcoat and this waterstop has lap.
Preferably, the overlap length of the coated waterstop of described overcoat termination is not less than 15 centimetres, and both sides exceed this waterstop width and are no less than 5 centimetres, and the thickness of described overcoat is no less than 4 millimeters.
Preferably, between described overcoat and the termination of waterstop, combine in the mode of brushing activator and/or cementing agent.
The present invention also provides the method for attachment of a kind of concrete for hydraulic structure member expansion joint waterstop, and it comprises the steps:
(1), in the shrinkage joint of this waterstop breakage, fill a sealing packed layer, be preferably sealing this place's sealing;
(2), form an overcoat in the termination outer side covers of sealing packed layer and this waterstop breakage by flexible film material.
Method as above, the width of this overcoat is greater than the width of this waterstop, and the termination of this overcoat and this waterstop has lap.
Method as above also comprises pre-treatment step between step (1): from the raggle of concrete for hydraulic structure component surface to expose the termination, waterstop both sides of this waterstop breakage.
Method as above, in step (2) afterwards, makes concrete for hydraulic structure component surface smooth with this groove of cement mortar backfill again.
Method as above, this overcoat is the moulding by the mode of scene coating flexible film material outside the termination of sealing packed layer and this waterstop breakage.
Method as above, this overcoat is made up of flexible film material and fiber reinforced material.Concrete mode can be, in applying the process of this flexible film material, reinforcing fiber or cloth are added in this coating material, or directly reinforcing fiber or cloth are laid in not solidified coating, or in advance reinforcing fiber or cloth are laid on behind the two ends outside and sealing packed layer surface of this waterstop breakage, above this reinforcing fiber or cloth, brush again this liquid state flexible film material, then curing molding.
Method as above, the overlap length that this overcoat covers waterstop termination is not less than 15 centimetres, and both sides exceed this waterstop width and are no less than 5 centimetres, and the thickness of described overcoat is no less than 4 millimeters.
Method as above also comprises a cross cut end (of a beam) brushing activator toward this waterstop breakage and/or the treatment step of cementing agent between step (1) and step (2).
The concrete advantage of the present invention is as follows:
1. the present invention is between the concrete member expansion joint of waterstop breakage, first with the sealing packed layer that flexible caulking material forms, shrinkage joint face is sealed; In order to support outer field overcoat, for overcoat provides support face with the molding mode of field-applied flexible film material.The existence of flexible caulking material, makes protecting film in the direction perpendicular to sealing (across the direction of sealing) simultaneously, has larger extensibility.This measure can improve the hydraulic pressure resistance ability of integrated seepage-proofing structure, increases again the ability of the adaptation sealing variation of waterstop syndeton, and can not affect the normal flexible of concrete component at all.
2. overcoat of the present invention, moulding is directly connected with the termination of waterstop when making overcoat moulding with sealing packed layer outside coating filmogen in waterstop termination can to pass through scene.
Waterstop surface is typically provided with as strengthening anti-seepage effect and adapting to shrinkage joint and is out of shape the projection arranging, utilize the mode of field-applied filmogen can directly be coated these sealing projections, thereby the complexity projection that can adapt to various waterstops surface, has excellent sealing effectiveness; On the other hand, concrete surface below waterstop is conventionally because the reason of damaged waterstop partial dismantling causes concrete damaged and rough and uneven in surface, utilize on-the-spot filmogen to be directly coated in scraggly concrete surface, its construction technology is simple, sealing effectiveness ideal.
3. overcoat, by adding pliable and tough fiber and/or cloth as strengthening course, strengthens the intensity of overcoat, can reduce stress and concentrate, and further improves hydraulic pressure resistance ability and the external force resistance damage capability of integrated seepage-proofing structure.
4. the length of the coated waterstop of overcoat termination is not less than 15 centimetres, and both sides exceed waterstop width and are no less than 5 centimetres, and overcoat thickness is no less than 4 millimeters, can increase degree of being connected firmly and the anti-seepage effect of waterstop syndeton.
5. cross cut end (of a beam) brushing activator and/or the cementing agent of waterstop, to improve the adhesive strength between protective coating and waterstop.
Brief description of the drawings
Fig. 1 is the installation site schematic diagram of concrete for hydraulic structure member expansion joint waterstop.
Fig. 2 is concrete for hydraulic structure member expansion joint waterstop syndeton floor map.
Fig. 3 is concrete for hydraulic structure member expansion joint waterstop syndeton A-A sectional drawing.
Fig. 4 is concrete for hydraulic structure member expansion joint waterstop syndeton B-B sectional drawing.
Symbology explanation:
1-fills sealant 2 waterstop 21 waterstop terminations
3-overcoat 4-concrete component 5 shrinkage joint
6-rectangular channel m overcoat both sides exceed the overlapping length of the width n overcoat of waterstop and waterstop termination.
Detailed description of the invention
As shown in Fig. 2-Fig. 4; when in concrete for hydraulic structure member 4; when being embedded in waterstop 2 in the 5 both sides concrete of shrinkage joint local damage occurring, the first concrete chisel removal to external surface by breakage, forms rectangular channel 6; the termination 21 of waterstop 2 is exposed (or by wiping out breakage; form comparatively neat termination 21, both sides, be known approaches, therefore do not describe in detail herein); note all the other unspoiled waterstops 2 of protection, in order to avoid damaged by concrete waste quarrel simultaneously.The sealing packed layer 1(that the interior filling in shrinkage joint 5 between the termination 21 of two waterstops 2 is made up of flexible caulking material is shown in Fig. 2 and Fig. 3), the height that wherein seals packed layer 1 can slightly protrude from the groove face of 5 both sides, shrinkage joint, is preferably this place's sealing at this shrinkage joint 5 of sealing.The flexible film material of reusable liquid in field-applied in the termination 21 of this waterstop, the outside of sealing packed layer 1 is with moulding one overcoat 3, to cover the termination 21 of these both sides, the groove bottom (referring to Fig. 3-4) of sealing packed layer 1 and breakage sealing both sides, in the process applying, can in coating material, add flexible fiber reinforcing material, such as flexible fiber or cloth etc., to increase intensity and the anti-stress ability of overcoat 3 molding structures; Wherein, apply on the concrete groove face of termination, both sides 21, sealing packed layer 1 and both sides, shrinkage joint that the scope of flexible film material comprises this waterstop 2 (as shown in Figure 2).Before applying, also can be in the termination of waterstop 2 21 upper surface brushing activator and/or cementing agents, reach between the 21 overlaid positions, termination that make overcoat 3 and waterstop 2 and be filled with this activator or cementing agent, so as to improving adhesive strength and the sealing performance between overcoat 3 and waterstop 2 terminations, both sides 21.As shown in Figure 2, the length n that overcoat 3 covers (coating) waterstop termination 21 is not less than 15 centimetres (also referring to overlap length), and overcoat 3 covers the width m that exceeds waterstop 2 and is no less than 5 centimetres, and the thickness of overcoat 3 self is no less than 4 millimeters.After above operation completes, again use in cement mortar backfill rectangular channel 6.The present invention is by field-applied flexible film material moulding overcoat 3, can directly make the overcoat 3 of moulding combine closely with the termination, both sides 21 of waterstop 2, provide necessary supporting surface and described sealing packed layer 1 can be the overcoat 3 of field-applied moulding, and increase the hydraulic pressure resistance ability of this syndeton; In addition, due to the existence of sealing packed layer 1, make overcoat 3 in the direction (across the direction of sealing) perpendicular to flexible sealing, have larger extensibility.Wherein, described flexible film material may be selected to be polyureas series material.
Wherein, the process of this overcoat 3 of field-applied flexible film material moulding, concrete mode can be, in applying the process of this flexible film material, reinforcing fiber or cloth are added in this coating material, or directly reinforcing fiber or cloth are laid in not solidified coating, or in advance reinforcing fiber or cloth are laid on behind two ends 21 outsides and sealing packed layer 1 surface of this waterstop breakage, above this reinforcing fiber or cloth, brush again this liquid state flexible film material, then curing molding.
Above-described embodiment is only preferred forms of the present invention, wherein the molding mode of this overcoat 3 is not limited to the mode of field-applied, also can be in advance prior to after the overcoat 3 with pliable and tough filmogen and flexible fiber (previously described reinforcing fiber or cloth) moulding one preliminary dimension outside the venue, cover again 21 outsides, termination that are adhered to sealing packed layer 1 and waterstop 2, by bonding agent or special activating agent, together with making to closely bond with the termination 21 of this waterstop 2.
Above-described embodiment is only for the invention example is clearly described, and the not restriction to the invention detailed description of the invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Any apparent variation of in every case being extended out within the spirit and principles in the present invention or variation are still among the protection domain in the invention claim.
Claims (10)
1. a method of attachment for concrete for hydraulic structure member expansion joint waterstop, it comprises the steps:
(1), in the shrinkage joint of this waterstop breakage, fill a sealing packed layer;
(2) overcoat, being formed by flexible film material in the termination of sealing packed layer and this waterstop breakage outer side covers one deck.
2. a kind of concrete for hydraulic structure member expansion joint waterstop according to claim 1 method of attachment, is characterized in that, the width of this overcoat is greater than the width of this waterstop, and the termination of this overcoat and this waterstop has and partly overlaps.
3. a kind of concrete for hydraulic structure member expansion joint waterstop according to claim 1 method of attachment, it is characterized in that, between step (1), also comprise pre-treatment step: from the raggle of concrete for hydraulic structure component surface to expose the termination, waterstop both sides of this waterstop breakage.
4. a kind of concrete for hydraulic structure member expansion joint waterstop according to claim 3 method of attachment, is characterized in that, in step (2) afterwards, again makes concrete for hydraulic structure component surface smooth with this groove of cement mortar backfill.
5. a kind of concrete for hydraulic structure member expansion joint waterstop according to claim 1 method of attachment, it is characterized in that, this overcoat is by the liquid flexible film material of field-applied outside the termination in sealing packed layer and this waterstop breakage, the mode of curing molding forms again.
6. a kind of concrete for hydraulic structure member expansion joint waterstop method of attachment according to claim 1 or 5, is characterized in that, this overcoat is made up of flexible film material and fiber reinforced material.
7. a kind of concrete for hydraulic structure member expansion joint waterstop according to claim 1 method of attachment, it is characterized in that, between step (1) and step (2), also comprise a cross cut end (of a beam) brushing activator to this waterstop breakage and/or the treatment step of cementing agent.
8. a concrete for hydraulic structure member expansion joint waterstop syndeton, its feature comprises: an overcoat and a sealing packed layer, sealing packed layer is filled in the shrinkage joint of waterstop breakage, this overcoat is coated on the outside, termination of sealing packed layer and this waterstop breakage, and combines with this termination.
9. a kind of concrete for hydraulic structure member expansion joint waterstop according to claim 8 method of attachment, it is characterized in that, sealing packed layer is flexible caulking material, and this overcoat is made up of flexible film material and the reinforcing fiber be located in this flexible film material.
10. a kind of concrete for hydraulic structure member expansion joint waterstop syndeton according to claim 8, it is characterized in that, the overlap length of the coated waterstop of described overcoat termination is not less than 15 centimetres, both sides exceed this waterstop width and are no less than 5 centimetres, and the thickness of described overcoat is no less than 4 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410281372.6A CN104060576B (en) | 2014-06-20 | 2014-06-20 | Concrete for hydraulic structure member expansion joint waterstop repairs attachment structure and method for repairing and connecting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410281372.6A CN104060576B (en) | 2014-06-20 | 2014-06-20 | Concrete for hydraulic structure member expansion joint waterstop repairs attachment structure and method for repairing and connecting |
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| CN104060576A true CN104060576A (en) | 2014-09-24 |
| CN104060576B CN104060576B (en) | 2016-08-24 |
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| CN201410281372.6A Expired - Fee Related CN104060576B (en) | 2014-06-20 | 2014-06-20 | Concrete for hydraulic structure member expansion joint waterstop repairs attachment structure and method for repairing and connecting |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235504A (en) * | 2018-09-04 | 2019-01-18 | 中国十九冶集团有限公司 | Deformation joint waterproof structure and deformation joint repairing method |
| CN109738132A (en) * | 2019-02-19 | 2019-05-10 | 中国水利水电科学研究院 | Hydraulic structure expansion joint water-stagnating effect rapid detection system and method |
| CN110195407A (en) * | 2019-07-02 | 2019-09-03 | 绍兴欢歌智能科技有限公司 | A kind of waste and old waterstop detaching equipment of bridge expanssion joint |
| CN113431214A (en) * | 2021-07-06 | 2021-09-24 | 昌达建筑科技有限公司 | Expansion joint structure of building |
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| CN1125802A (en) * | 1994-12-28 | 1996-07-03 | 上海华海特殊环境医学工程公司 | Inner repair technology method for reinforced concrete culvert and channel water-blocking belt |
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| CN202466527U (en) * | 2012-03-20 | 2012-10-03 | 中国水利水电科学研究院 | Novel water stop structure for seam or crack of hydraulic concrete building |
| EP2578658A1 (en) * | 2010-05-28 | 2013-04-10 | Obayashi Corporation | Water-stop agent for water-impervious sheet and method for repairing water-impervious sheet |
| CN203960811U (en) * | 2014-06-20 | 2014-11-26 | 北京中水科海利工程技术有限公司 | Concrete for hydraulic structure member expansion joint waterstop syndeton |
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2014
- 2014-06-20 CN CN201410281372.6A patent/CN104060576B/en not_active Expired - Fee Related
Patent Citations (6)
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| CN1125802A (en) * | 1994-12-28 | 1996-07-03 | 上海华海特殊环境医学工程公司 | Inner repair technology method for reinforced concrete culvert and channel water-blocking belt |
| CN101570973A (en) * | 2009-05-31 | 2009-11-04 | 武汉一冶建筑安装工程有限责任公司 | Internal-bonded water-proof technique for externally-bonded waterstop |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235504A (en) * | 2018-09-04 | 2019-01-18 | 中国十九冶集团有限公司 | Deformation joint waterproof structure and deformation joint repairing method |
| CN109738132A (en) * | 2019-02-19 | 2019-05-10 | 中国水利水电科学研究院 | Hydraulic structure expansion joint water-stagnating effect rapid detection system and method |
| CN110195407A (en) * | 2019-07-02 | 2019-09-03 | 绍兴欢歌智能科技有限公司 | A kind of waste and old waterstop detaching equipment of bridge expanssion joint |
| CN113431214A (en) * | 2021-07-06 | 2021-09-24 | 昌达建筑科技有限公司 | Expansion joint structure of building |
| CN113431214B (en) * | 2021-07-06 | 2023-01-17 | 昌达建筑科技有限公司 | Expansion joint structure of building |
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| Publication number | Publication date |
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| CN104060576B (en) | 2016-08-24 |
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Granted publication date: 20160824 |