CN104805844A - Connection structure between steep slope bituminous concrete core-wall and concrete foundation - Google Patents
Connection structure between steep slope bituminous concrete core-wall and concrete foundation Download PDFInfo
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- CN104805844A CN104805844A CN201410035757.4A CN201410035757A CN104805844A CN 104805844 A CN104805844 A CN 104805844A CN 201410035757 A CN201410035757 A CN 201410035757A CN 104805844 A CN104805844 A CN 104805844A
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Abstract
The invention discloses a connection structure between a steep slope bituminous concrete core-wall and a concrete foundation. The connection structure comprises the concrete foundation, bitumen, bituminous mortar, a bituminous concrete core-wall enlarged head, and the bituminous concrete core-wall. The concrete foundation is connected with the bituminous concrete core-wall enlarged head through an opposite joint, with a metal water stop piece being arranged in the middle. The bituminous mortar is doped with an admixture for improving the thermal stability of the slope. The bituminous concrete having high bitumen content is used in the bituminous concrete core-wall enlarged head and bilateral sides of the bituminous concrete core-wall. The cross section of the metal water stop piece is U-shaped. By the connection structure between the steep slope bituminous concrete core-wall and the concrete foundation, the deformation compatibility of the steep slope bituminous concrete core-wall and the thermal stability of the slope are increased, the connection manner between the bituminous concrete core-wall enlarged head and the concrete foundation is simplified, the construction of the concrete foundation and the rolling compaction of the core-wall bituminous concrete are convenient, and the seepage-proofing effect of the joint is excellent.
Description
Technical field
The present invention relates to the asphaltic concrete core wall technical field of Hydraulic and Hydro-Power Engineering, particularly relate to the syndeton of a kind of gradient slope asphaltic concrete core wall and concrete pedestal.
Background technology
Asphaltic concrete core wall and asphaltic concrete core wall amplifying head all adopt the bituminous concrete of plain asphalt content configuration usually, and the compatibility of deformation ability in dam body is weak; Without spike in asphalt mortar, bituminous mortar, its slope thermal stability is poor, is unsuitable for building in gradient slope area.Between concrete pedestal and asphaltic concrete core wall amplifying head, the general arc-shaped joint that adopts connects, middle part is not established sealing or is established W type, Z-type metallic water stop sheet, not only concrete pedestal construction trouble, and cause cannot adopting vibrating roller grinding compacting with sealing piece periphery bituminous concrete in arc-shaped joint groove, joint anti-seepage effect is not good.
Summary of the invention
The object of the present invention is to provide that a kind of asphaltic concrete core wall compatibility of deformation and slope heat stability are strong, asphaltic concrete core wall amplifying head and concrete pedestal linked vector graph is simple, facilitate concrete pedestal to construct and core-wall bituminous concrete rolls the syndeton of the good gradient slope asphaltic concrete core wall of compacting, joint anti-seepage effect and concrete pedestal, thus the foregoing problems existed in solution prior art.
To achieve these goals, the technical solution used in the present invention is as follows:
A syndeton for gradient slope asphaltic concrete core wall and concrete pedestal, comprising: concrete pedestal 1, pitch 2, asphalt mortar, bituminous mortar 3, asphaltic concrete core wall amplifying head 4 and asphaltic concrete core wall 5; Adopt plain adapter to connect between described concrete pedestal 1 and described asphaltic concrete core wall amplifying head 4, the middle part of the connecting portion of described concrete pedestal (1) and described asphaltic concrete core wall amplifying head (4) is provided with metallic water stop sheet 6; Described pitch 2 is brushed at described concrete pedestal 1 with on the joint face of described asphaltic concrete core wall amplifying head 4, and described asphalt mortar, bituminous mortar 3 is brushed has the described concrete pedestal 1 of described pitch 2 with on the joint face of described asphaltic concrete core wall amplifying head 4 in brushing.
Preferably, the spray range of described pitch 2 extends to the position of the upstream and downstream>=0.5m of described asphalt mortar, bituminous mortar 3, and quantity for spray is 0.15kg/m
2~ 0.25kg/m
2.
Preferably, the thickness of described asphalt mortar, bituminous mortar 3 is 1cm ~ 5cm, and brushing scope is identical with the thickness of the described asphaltic concrete core wall amplifying head 4 contacted.
Preferably, the thickness of described asphaltic concrete core wall amplifying head 4 riverbed end is identical with the thickness of described asphaltic concrete core wall 5, and described asphaltic concrete core wall amplifying head 4 onshore edge direction is thickening to described asphaltic concrete core wall 5 thickness 1.5 ~ 2.5 times gradually.
Preferably, the bituminous concrete that described asphaltic concrete core wall amplifying head 4 adopts high bitumen content to configure, its bitumen content is higher by 0.3% ~ 0.9% than described asphaltic concrete core wall 5 mid portion.
Preferably, the bituminous concrete that described asphaltic concrete core wall 5 both sides 5m ~ 15m scope adopts high bitumen content to configure, its bitumen content is higher than mid portion by 0.3% ~ 0.9%.
Preferably, described metallic water stop sheet 6 is copper water stop or stainless steel sealing piece.
Preferably, the thickness of described metallic water stop sheet 6 is 0.8mm ~ 1.6mm, and transverse shape is U-shaped, and nose 7 is highly 40mm ~ 80mm, and nose 7 width is 12mm ~ 20mm, and two flat sections of width are 150mm ~ 300mm.
Preferably, polyester fiber or SBS modifier or sour lipid additive is mixed with in described asphalt mortar, bituminous mortar 3, for improving slope thermal stability.
Preferably, described pitch 2 is cationic emulsified bitumen or cut back bitumen.
The invention has the beneficial effects as follows:
By the spike added in this asphalt mortar, bituminous mortar, and at the bituminous concrete that the high bitumen content that asphaltic concrete core wall amplifying head and asphaltic concrete core wall both sides adopt configures, improve compatibility of deformation performance and the slope thermal stability of gradient slope asphaltic concrete core wall; The utilization of plain adapter and U-shaped metallic water stop sheet simplifies the linked vector graph between asphaltic concrete core wall amplifying head and concrete pedestal, facilitate concrete pedestal construct and core-wall bituminous concrete roll compacting, joint anti-seepage effect is good, has directive significance and dissemination widely.
Accompanying drawing explanation
Fig. 1 is the syndeton floor map of gradient slope asphaltic concrete core wall of the present invention and concrete pedestal;
Fig. 2 is the partial enlarged drawing of the syndeton floor map of gradient slope asphaltic concrete core wall of the present invention and concrete pedestal;
Wherein: 1---concrete pedestal; 2---pitch; 3---asphalt mortar, bituminous mortar; 4---asphaltic concrete core wall amplifying head; 5---asphaltic concrete core wall; 6---metallic water stop sheet; The nose of 7---metallic water stop sheet;
Direction shown in arrow is water (flow) direction.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.Should be appreciated that detailed description of the invention described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1-2, the syndeton that the invention discloses a kind of gradient slope asphaltic concrete core wall and concrete pedestal comprises: concrete pedestal 1, pitch 2, asphalt mortar, bituminous mortar 3, asphaltic concrete core wall amplifying head 4, asphaltic concrete core wall 5; Adopt plain adapter to connect between described concrete pedestal 1 and described asphaltic concrete core wall amplifying head 4, the middle part of the connecting portion of described concrete pedestal (1) and described asphaltic concrete core wall amplifying head (4) is provided with metallic water stop sheet 6; Described pitch 2 is brushed at described concrete pedestal 1 with on the joint face of described asphaltic concrete core wall amplifying head 4, and described asphalt mortar, bituminous mortar 3 is brushed has the described concrete pedestal 1 of described pitch 2 with on the joint face of described asphaltic concrete core wall amplifying head 4 in brushing.The spray range of described pitch 2 extends to the position of the upstream and downstream>=0.5m of described asphalt mortar, bituminous mortar 3, and quantity for spray is 0.15kg/m
2~ 0.25kg/m
2.The thickness of described asphalt mortar, bituminous mortar 3 is 1cm ~ 5cm, and brushing scope is identical with the thickness of the described asphaltic concrete core wall amplifying head 4 contacted.The thickness of described asphaltic concrete core wall amplifying head 4 riverbed end is identical with the thickness of described asphaltic concrete core wall 5, and described asphaltic concrete core wall amplifying head 4 onshore edge direction is thickening to described asphaltic concrete core wall 5 thickness 1.5 ~ 2.5 times gradually.The bituminous concrete that described asphaltic concrete core wall amplifying head 4 adopts high bitumen content to configure, its bitumen content is higher by 0.3% ~ 0.9% than described asphaltic concrete core wall 5 mid portion.The bituminous concrete that described asphaltic concrete core wall 5 both sides 5m ~ 15m scope adopts high bitumen content to configure, its bitumen content is higher than mid portion by 0.3% ~ 0.9%.Described metallic water stop sheet 6 is copper water stop or stainless steel sealing piece.The thickness of described metallic water stop sheet 6 is 0.8mm ~ 1.6mm, and transverse shape is U-shaped, and nose 7 is highly 40mm ~ 80mm, and nose 7 width is 12mm ~ 20mm, and two flat sections of width are 150mm ~ 300mm.Polyester fiber or SBS modifier or sour lipid additive is mixed with, for improving the spike of slope thermal stability in described asphalt mortar, bituminous mortar 3.Described pitch 2 is cationic emulsified bitumen or cut back bitumen.
Further illustrate by reference to the accompanying drawings for certain the large hydropower station engineering that have employed technical solution of the present invention below:
The long 219.9m of certain large hydropower station rockfill dam with asphalt concrete core dam crest, maximum height of dam 171.2m, left bank is nearly upright high slope cliff, and average grade is more than 70 °, and right bank is the folded slope landform that two walls press from both sides a slope, average grade about 45 °.Have employed the syndeton of gradient slope asphaltic concrete core wall of the present invention and concrete pedestal.
As shown in Figure 1, the syndeton of two sides gradient slope asphaltic concrete core wall and concrete pedestal, comprising: concrete pedestal 1, pitch 2, asphalt mortar, bituminous mortar 3, asphaltic concrete core wall amplifying head 4, asphaltic concrete core wall 5.Adopt plain adapter to connect between described concrete pedestal 1 and described asphaltic concrete core wall amplifying head 4, the middle part of the connecting portion of described concrete pedestal (1) and described asphaltic concrete core wall amplifying head (4) is provided with metallic water stop sheet 6.Described pitch 2 is cut back bitumen, and spray range extends to the position of described asphalt mortar, bituminous mortar upstream and downstream 1.0m, and quantity for spray is 0.20kg/m
2.Be mixed with polyester fiber in described asphalt mortar, bituminous mortar 3, thick 3cm, brushing scope is identical with described asphaltic concrete core wall amplifying head 4 thickness contacted.Described asphaltic concrete core wall amplifying head 4 thickness riverbed end is identical with described asphaltic concrete core wall 5 thickness, thickening to described asphaltic concrete core wall 5 thickness 2.0 times gradually to bank.The bituminous concrete that described asphaltic concrete core wall amplifying head 4 adopts high bitumen content to configure, its bitumen content is higher by 0.6% than described asphaltic concrete core wall 5 mid portion.The bituminous concrete that described asphaltic concrete core wall 5 both sides 10m scope adopts high bitumen content to configure, its bitumen content is higher than mid portion by 0.6%.Described metallic water stop sheet 6 is annealed copper sealing piece, thick 1.2mm, and transverse shape is U-shaped, the high 60mm of nose 7, the wide 20mm of nose 7, two flat sections of wide 250mm, and nose 7 can increase its displacement fitness, is cut off by displacing force to avoid it.
First concreting pedestal during construction, install metallic water stop sheet simultaneously, solidify well until concrete pedestal, its joint face sprays pitch, brushing asphalt mortar, bituminous mortar on pitch, then construction building asphaltic concrete core wall amplifying head and asphaltic concrete core wall, carries out compaction treatment by engine request to the bituminous concrete of core-wall in work progress.
By adopting technique scheme disclosed by the invention, obtain effect useful as follows:
By the spike added in this asphalt mortar, bituminous mortar, and at the bituminous concrete that the high bitumen content that asphaltic concrete core wall amplifying head and asphaltic concrete core wall both sides adopt configures, improve compatibility of deformation performance and the slope thermal stability of gradient slope asphaltic concrete core wall; The utilization of plain adapter and U-shaped metallic water stop sheet simplifies the linked vector graph between asphaltic concrete core wall amplifying head and concrete pedestal, facilitate concrete pedestal construct and core-wall bituminous concrete roll compacting, joint anti-seepage effect is good, has directive significance and dissemination widely.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should look protection scope of the present invention.
Claims (10)
1. a syndeton for gradient slope asphaltic concrete core wall and concrete pedestal, is characterized in that, comprising: concrete pedestal (1), pitch (2), asphalt mortar, bituminous mortar (3), asphaltic concrete core wall amplifying head (4) and asphaltic concrete core wall (5); Adopt plain adapter to connect between described concrete pedestal (1) and described asphaltic concrete core wall amplifying head (4), the middle part of the connecting portion of described concrete pedestal (1) and described asphaltic concrete core wall amplifying head (4) is provided with metallic water stop sheet (6); Described pitch (2) brushing is on the joint face of described concrete pedestal (1) with described asphaltic concrete core wall amplifying head (4), and described asphalt mortar, bituminous mortar (3) brushing has the described concrete pedestal (1) of described pitch (2) with on the joint face of described asphaltic concrete core wall amplifying head (4) in brushing.
2. the syndeton of gradient slope asphaltic concrete core wall according to claim 1 and concrete pedestal, it is characterized in that, the spray range of described pitch (2) extends to the position of the upstream and downstream>=0.5m of described asphalt mortar, bituminous mortar (3), and quantity for spray is 0.15kg/m
2~ 0.25kg/m
2.
3. the syndeton of gradient slope asphaltic concrete core wall according to claim 1 and concrete pedestal, it is characterized in that, the thickness of described asphalt mortar, bituminous mortar (3) is 1cm ~ 5cm, and brushing scope is identical with the thickness of the described asphaltic concrete core wall amplifying head (4) contacted.
4. the syndeton of gradient slope asphaltic concrete core wall according to claim 1 and concrete pedestal, it is characterized in that, the thickness of described asphaltic concrete core wall amplifying head (4) riverbed end is identical with the thickness of described asphaltic concrete core wall (5), and described asphaltic concrete core wall amplifying head (4) onshore edge direction is thickening to described asphaltic concrete core wall (5) thickness 1.5 ~ 2.5 times gradually.
5. the syndeton of gradient slope asphaltic concrete core wall according to claim 1 and concrete pedestal, it is characterized in that, the bituminous concrete that described asphaltic concrete core wall amplifying head (4) adopts high bitumen content to configure, its bitumen content is higher by 0.3% ~ 0.9% than described asphaltic concrete core wall (5) mid portion.
6. the syndeton of gradient slope asphaltic concrete core wall according to claim 1 and concrete pedestal, it is characterized in that, the bituminous concrete that described asphaltic concrete core wall (5) both sides 5m ~ 15m scope adopts high bitumen content to configure, its bitumen content is higher than mid portion by 0.3% ~ 0.9%.
7. the syndeton of gradient slope asphaltic concrete core wall according to claim 1 and concrete pedestal, is characterized in that, described metallic water stop sheet (6) is copper water stop or stainless steel sealing piece.
8. the syndeton of gradient slope asphaltic concrete core wall according to claim 7 and concrete pedestal, it is characterized in that, the thickness of described metallic water stop sheet (6) is 0.8mm ~ 1.6mm, transverse shape is U-shaped, nose (7) is highly 40mm ~ 80mm, nose (7) width is 12mm ~ 20mm, and two flat sections of width are 150mm ~ 300mm.
9. according to the syndeton of the arbitrary described gradient slope asphaltic concrete core wall of claim 1-8 and concrete pedestal, it is characterized in that, polyester fiber or SBS modifier or sour lipid additive is mixed with, for improving slope thermal stability in described asphalt mortar, bituminous mortar (3).
10., according to the syndeton of the arbitrary described gradient slope asphaltic concrete core wall of claim 1-8 and concrete pedestal, it is characterized in that, described pitch (2) is cationic emulsified bitumen or cut back bitumen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035757.4A CN104805844B (en) | 2014-01-24 | Gradient slope asphaltic concrete core wall and the attachment structure of concrete pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035757.4A CN104805844B (en) | 2014-01-24 | Gradient slope asphaltic concrete core wall and the attachment structure of concrete pedestal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104805844A true CN104805844A (en) | 2015-07-29 |
| CN104805844B CN104805844B (en) | 2016-11-30 |
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Cited By (2)
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| CN106049372A (en) * | 2016-07-28 | 2016-10-26 | 中水东北勘测设计研究有限责任公司 | Asphalt concrete core wall first-stage and second-stage construction seam slot-shaped connection structure and construction method |
| CN114293517A (en) * | 2022-02-24 | 2022-04-08 | 中水北方勘测设计研究有限责任公司 | Method for preventing asphalt concrete core wall and concrete base from pulling apart in high mountain canyon region |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106049372A (en) * | 2016-07-28 | 2016-10-26 | 中水东北勘测设计研究有限责任公司 | Asphalt concrete core wall first-stage and second-stage construction seam slot-shaped connection structure and construction method |
| CN114293517A (en) * | 2022-02-24 | 2022-04-08 | 中水北方勘测设计研究有限责任公司 | Method for preventing asphalt concrete core wall and concrete base from pulling apart in high mountain canyon region |
| CN114293517B (en) * | 2022-02-24 | 2023-09-29 | 中水北方勘测设计研究有限责任公司 | Method for preventing asphalt concrete core wall and concrete base in mountain gorge valley region from cracking |
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