CN101705667B - Anti-freezing water stop structure of hydraulic concrete expansion joint - Google Patents
Anti-freezing water stop structure of hydraulic concrete expansion joint Download PDFInfo
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- CN101705667B CN101705667B CN2009101543288A CN200910154328A CN101705667B CN 101705667 B CN101705667 B CN 101705667B CN 2009101543288 A CN2009101543288 A CN 2009101543288A CN 200910154328 A CN200910154328 A CN 200910154328A CN 101705667 B CN101705667 B CN 101705667B
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Abstract
The invention relates to an anti-freezing water stop structure of a hydraulic concrete expansion joint, aiming to solve the technical problems of making up the shortages of the prior art and providing a water stop structure of hydraulic concrete expansion joint, which can effectively reduce freezing destructive power. The technical scheme for solving the problem is as follows: the water stop structure is arranged in a joint below the surface of a concrete panel and only permits that the highest points of the bumps of SR plastic filler and an SR seepage-proofing cover plate are slightly higher than the plane of the concrete panel; the width of the bottom end of the SR seepage-proofing cover plate is 50 mm more than common width; and the upper surfaces of an anchoring batten and an expansion bolt are totally sealed by HK elastic sealing agent. The invention can be used in water resources and hydropower construction, in particular to seepage-proofing construction of concentrate panel loose rock dam joints.
Description
Technical field
The present invention relates to a kind of anti-freezing water stop structure of hydraulic concrete expansion joint.Be applicable to the water conservancy and hydropower construction work, be particularly useful in the CFRD seam seepage control engineering.
Background technology
CFRD has become universally acknowledged a kind of construction investment province, dam foundation compliance is strong, speed of application is fast, safe the most competitive dam type at present; China from 20 the end of the century the mid-80 begin to build CFRD; Though start late; But high starting point, development are soon, built up the high face dam of the first in the world now---China's Hubei Shui Buya face dam, height of dam 233m.The concrete slab seam seepage control is one of key technology of face dam antiseepage.
The northern area CFRD will experience ice period with other hydraulic architecture concrete structure every year; The antiseepage requirement of movement joint is not only arranged; The performance need that anti-freezing destruction is more arranged: usually the concrete slab joint surface water-stopping structure of face dam for pointing SR plastic sealing material flexible filler in the V-shaped groove of reserving after, the surface is pasted rubber-type antiseepage cover plate flexible filler is protected, the cover plate both sides are fixed on the concrete slab by band steel or angle steel and expansion bolt; Like ice period; The metal of protection cover plate both sides presses solidly that bar and bolt head can to freeze consolidation force strong with the storehouse water-ice, and anchor hole receives freezingly can reduce anchored force, when weather warms up ice-melt; Ice body can form serious dragging to the water-stopping structure surface and pull out destruction, the freezing destruction that therefore need prevent water-stopping structure with special construction and material.
Summary of the invention
The technical problem that the present invention will solve is: remedy the deficiency of prior art, a kind of concrete for hydraulic structure movement joint water-stopping structure that can effectively reduce freezing destructive power is provided.
The technical scheme that the present invention adopted is: this anti-freezing water stop structure of hydraulic concrete expansion joint has concrete slab; Seam crossing between the panel is provided with pitch plank, neoprene rod, SR plasticity inserts, SR antiseepage cover plate from top to bottom successively; The cover plate both sides are fixed on the concrete slab by expansion bolt and anchoring batten; It is characterized in that: said water-stopping structure is arranged in the seam that is lower than the concrete slab surface; The bulge peak that only allows SR plasticity inserts and SR antiseepage cover plate is a little more than the concrete surface board plane; The width of said SR antiseepage cover plate bottom amplifies 50mm, the complete shutoff of top employing HK elasticity edge sealing agent of anchoring batten and countersunk head expansion bolt than conventional width.
Described anchoring batten is processed by stainless band steel or angle steel.
Scribble HK98 epoxy resin anchoring agent on the screw rod of said expansion bolt.
Said HK elasticity edge sealing agent is made up of A component and B component, and wherein the A component comprises: epoxy resin 5～20 weight portions, polyethers 10～35 weight portions, castor oil 10～30 weight portions, toluene di-isocyanate(TDI) 20～60 weight portions; The B component comprises: MOCA (two adjacent chlorodiphenyl amine methane) 5～20 weight portions, polyamide 5～10 weight portions, dibutyl phthalate (DBP) 20～40 weight portions, tyre rubber powder 10～30 weight portions, French chalk 30～60 weight portions.
Earlier A component raw material epoxy resin 5～20 weight portions, polyethers 10～35 weight portions, castor oil 10～30 weight portions, toluene di-isocyanate(TDI) 20～60 weight portions are added agitated reactor successively, be controlled at 70～90 ℃ of following insulation reaction 2 hours;
Again B component raw material MOCA 5～20 weight portions, polyamide 5～10 weight portions, dibutyl phthalate (DBP) 20～40 weight portions, tyre rubber powder 10～30 weight portions, French chalk 30～60 weight portions are fed intake successively and mix thoroughly, even with the three-roller dispersion pressure;
Get weight ratio A: B=1: 2 mix thoroughly, promptly obtain said HK elasticity edge sealing agent, and its blade coating is used.
The invention has the beneficial effects as follows: prolong the width of SR antiseepage cover plate, strengthened the deformability of seam; Fastening operation is carried out in first dipping HK98 epoxy resin anchoring agent on the screw rod again when expansion bolt is installed, and strengthens the anti-freezing performance of anchor hole antiseepage, improves anchoring strength.Adopt sunk type surface joint sealing structure, reduce the sealing surface and give prominence to; Adopt the HK elasticity edge sealing agent complete closed anchoring batten and the expansion bolt head of especial manufacture, avoid metal parts to contact bonding, receive the possibility of freezing destruction thereby reduce the water-stopping structure surface with ice.
Description of drawings
Fig. 1 is the plan view of concrete for hydraulic structure movement joint water-stopping structure in the prior art.
Fig. 2 is a plan view of the present invention.
The specific embodiment
Embodiment 1:
As shown in Figure 1, be the plan view of the embodiment of the invention.During practical implementation:
1,, slot that 60cm wide dark at the prefabricated 5cm of concrete for hydraulic structure panel 1 seam face made V-shaped groove as shown in Figure 1, removes foreign material, with HK903 polymer emulsion mortar repairing pit.
2, by shown in Figure 1; Up filled bitumen plank 2, neoprene rod 3 and SR plasticity inserts 4 successively from the bottom of seam; With the tight SR plasticity inserts 4 of SR antiseepage cover plate 5 lids; And the bottom width of SR antiseepage cover plate 5 is than the wide 50mm of conventional cover plate, and its bulge radian peak is a little more than panel plane.
3, the screw rod place with expansion bolt 7 coats HK98 epoxy resin anchoring agent (commodity can be bought), puts the anchoring batten of being made by stainless band steel 6, it is fastened on the concrete slab, and makes expansion bolt 7 and stainless band steel 6 tightly suppress SR antiseepage cover plate 5 both sides; Meanwhile extracting epoxy resin 200g, polyethers 400g, castor oil 600g, toluene di-isocyanate(TDI) 1000g, add agitated reactor successively, be controlled at 70～90 ℃ of following insulation reaction and obtained component A in 2 hours; Get MOCA250g, polyamide 280g, dibutyl phthalate (DBP) 1200g, tyre rubber powder 600g, French chalk 1600g and feed intake successively and mix thoroughly, with the even B component that obtains of three-roller dispersion pressure.
4, get A component 2000g, B component 4000g mixes, and obtains HK elasticity edge sealing agent of the present invention, spread upon it on expansion bolt 7 and the stainless band steel 6, and with its complete shutoff.
The main performance such as the following table of made HK elasticity edge sealing agent:
So far, one as anti-freezing water stop structure of hydraulic concrete expansion joint of the present invention are made and are finished.
Embodiment 2:
As shown in Figure 1, be the plan view of the embodiment of the invention.During practical implementation:
1,, slot that 50cm wide dark at the prefabricated 5cm of concrete for hydraulic structure panel 1 seam face made V-shaped groove as shown in Figure 1, removes foreign material, with HK903 polymer emulsion mortar repairing pit.
2, by shown in Figure 1; Up filled bitumen plank 2, neoprene rod 3 and SR plasticity inserts 4 successively from the bottom of seam; With the tight SR plasticity inserts 4 of SR antiseepage cover plate 5 lid, and the bottom width of SR antiseepage cover plate is than the wide 50mm of conventional cover plate, and its bulge radian peak is a little more than panel plane.Adopt the expansion bolt press strip to fix on SR antiseepage cover plate both sides.
3, the screw rod place of expansion bolt 7 coats HK98 epoxy resin anchoring agent (commodity can be bought), puts the anchoring batten of being made by stainless angle steel, it is fastened on the concrete slab, and makes expansion bolt 7 and stainless angle steel 6 tightly suppress SR antiseepage cover plate 5.Meanwhile extracting epoxy resin 240g, polyethers 450g, castor oil 500g, toluene di-isocyanate(TDI) 1200g, add agitated reactor successively, be controlled at 70～90 ℃ of following insulation reaction and obtained component A in 2 hours; Get MOCA300g, polyamide 300g, dibutyl phthalate (DBP) 1000g, tyre rubber powder 720g, French chalk 1200g and feed intake successively and mix thoroughly, with the even B component that obtains of three-roller dispersion pressure.
4, get A component 1500g, B component 3000g mixes, and obtains HK elasticity edge sealing agent of the present invention, spread upon it on expansion bolt 7 and the stainless angle steel 6, and with its complete shutoff.
The main performance such as the following table of made HK elasticity edge sealing agent:
So far, one as anti-freezing water stop structure of hydraulic concrete expansion joint of the present invention complete.
In embodiment 1 and embodiment 2, MOCA is a kind of polyurethane vulcanizing agent, and name is called 3,3 '-two chloro-4, and 4 '-diaminodiphenyl-methane can directly be bought in market; Polyethers is the abbreviation of PPG, liquid, and character is comparatively stable, special odor slightly, nontoxic, non-corrosiveness, polyethers 220, polyethers 210, polyethers 330 etc. all can be used for the present invention, the telomerized polymer pliability, they can directly be bought in market.
Compared with prior art, the topmost characteristics of the present invention are: adopt sunk type surface joint sealing structure, reduced the projecting height on sealing surface greatly; Prolong the width of SR antiseepage cover plate, strengthened the deformability of seam; Adopt the HK elasticity edge sealing agent 8 complete closed anchoring battens and the countersunk head expansion bolt head 7 of especial manufacture, avoid metal parts to contact bonding, receive the possibility of freezing destruction thereby reduce the water-stopping structure surface with ice.
Claims (4)
1. anti-freezing water stop structure of hydraulic concrete expansion joint; Has concrete slab (1); Its seam crossing from down and on be provided with pitch plank (2), neoprene rod (3), SR plasticity inserts (4) and SR antiseepage cover plate (5) successively; Said antiseepage cover plate (5) both sides are fixed on the concrete slab (1) by expansion bolt (7) and anchoring batten (6); It is characterized in that: said joint sealing structure is installed in the slot that is lower than the concrete slab surface; Only allow the peak of SR plasticity inserts (4) and SR antiseepage cover plate (5) bulge radian slightly to exceed concrete slab (1) surface, the width of said SR antiseepage cover plate (5) bottom amplifies 50mm than conventional width, and the top of anchoring batten (6) and expansion bolt (7) sealed by HK elasticity edge sealing agent (8) fully.
2. anti-freezing water stop structure of hydraulic concrete expansion joint according to claim 1 is characterized in that: said anchoring batten is processed by stainless band steel or angle steel.
3. anti-freezing water stop structure of hydraulic concrete expansion joint according to claim 1 is characterized in that: scribble HK98 epoxy resin anchoring agent (9) on the screw rod of said expansion bolt (7).
4. anti-freezing water stop structure of hydraulic concrete expansion joint according to claim 1; It is characterized in that: said HK elasticity edge sealing agent (8) is made up of A component and B component, and wherein the A component comprises epoxy resin 5～20 weight portions, polyethers 10～35 weight portions, castor oil 10～30 weight portions, toluene di-isocyanate(TDI) 20～60 weight portions; The B component comprises MOCA 5～20 weight portions, polyamide 5～10 weight portions, dibutyl phthalate (DBP) 20～40 weight portions, tyre rubber powder 10～30 weight portions, French chalk 30～60 weight portions,
Earlier A component raw material epoxy resin 5～20 weight portions, polyethers 10～35 weight portions, castor oil 10～30 weight portions, toluene di-isocyanate(TDI) 20～60 weight portions are added agitated reactor successively, be controlled at 70～90 ℃ of following insulation reaction 2 hours;
Again B component raw material MOCA 5～20 weight portions, polyamide 5～10 weight portions, dibutyl phthalate (DBP) 20～40 weight portions, tyre rubber powder 10～30 weight portions, French chalk 30～60 weight portions are fed intake successively and mix thoroughly, even with the three-roller dispersion pressure;
Get weight ratio A: B=1: 2 mix thoroughly, promptly obtain described HK elasticity edge sealing agent (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101543288A CN101705667B (en) | 2009-11-27 | 2009-11-27 | Anti-freezing water stop structure of hydraulic concrete expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101543288A CN101705667B (en) | 2009-11-27 | 2009-11-27 | Anti-freezing water stop structure of hydraulic concrete expansion joint |
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| Publication Number | Publication Date |
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| CN101705667A CN101705667A (en) | 2010-05-12 |
| CN101705667B true CN101705667B (en) | 2012-02-01 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704442A (en) * | 2012-06-25 | 2012-10-03 | 中国水电顾问集团中南勘测设计研究院 | Joint water stop structure |
| ITMI20130560A1 (en) * | 2013-04-09 | 2014-10-10 | Carpi Tech Bv | METHOD AND WATERPROOF COVERAGE DEVICE FOR JOINTS IN HYDRAULIC WORKS |
| CN103225283B (en) * | 2013-04-24 | 2015-08-19 | 黄河勘测规划设计有限公司 | The syndeton of barrage foundation diaphragm wall and gate dam building |
| CN105862675B (en) * | 2016-05-31 | 2017-10-17 | 中国电建集团西北勘测设计研究院有限公司 | A kind of cut-pff wall top groove water sealing structure |
| CN109555085B (en) * | 2019-01-17 | 2023-12-01 | 中国电建集团华东勘测设计研究院有限公司 | Geomembrane seepage-proofing drainage structure on upstream face of gravity dam and construction method thereof |
| CN110453650B (en) * | 2019-07-02 | 2021-06-01 | 北京质诚捷讯水利工程有限公司 | Aqueduct water stop structure and construction method thereof |
| CN110387976A (en) * | 2019-08-20 | 2019-10-29 | 深圳市永固建筑科技有限公司 | Buried water stop and its installation method after a kind of deformation joint |
| CN110820685A (en) * | 2019-11-05 | 2020-02-21 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for treating SR (surface crack) anti-seepage cover plate of surface layer of arch dam body |
| CN113981911A (en) * | 2021-11-11 | 2022-01-28 | 中国水利水电第三工程局有限公司 | Embedded installation construction method for countersunk bolts of water stop cover plate on surface of face dam |
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