CN212865778U - Anti-seismic dam crest structure - Google Patents
Anti-seismic dam crest structure Download PDFInfo
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- CN212865778U CN212865778U CN202021420931.4U CN202021420931U CN212865778U CN 212865778 U CN212865778 U CN 212865778U CN 202021420931 U CN202021420931 U CN 202021420931U CN 212865778 U CN212865778 U CN 212865778U
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Abstract
The utility model discloses an anti-seismic dam crest structure, which is characterized by comprising a dam crest body, wherein the dam crest body is of a U-shaped integral structure; a gravel base and a road surface are sequentially filled in the body; one end of the U-shaped integral structure body is provided with a wave wall; the U-shaped integral structure is embedded into the dam body and is of a U-shaped reinforced concrete structure; the pavement is a brick pavement with the thickness of 24 cm. The utility model discloses an integral reinforced concrete structure's of U type dam crest structure constitutes a whole with whole dam crest, has improved the anti-seismic performance of dam, satisfies the security of dam.
Description
Technical Field
The utility model relates to a reservoir dam body, especially an antidetonation dam crest structure.
Background
The viaduct reservoir project is located in a dam field river of Miscany city of Yunnan province, the total reservoir capacity of the viaduct reservoir is 769.6 ten thousand meters 3, the dam is a concrete panel rock-fill dam, and the maximum dam height is 67.5 meters. The main active fracture in the engineering area is that Longling-Ruili big fracture north branch (F15-1) obliquely penetrates the reservoir area, moves to 45 degrees from the northeast and is 150m away from the dam axis. The earthquake intensity of an engineering area is 8 degrees, geological conditions are complex, earthquake activities are frequent, the engineering is located at the upstream of the Miscanthus sinensis city, the engineering earthquake safety is directly related to the life and property safety of hundreds of thousands of people at the dam of the Miscanthus sinensis city, and the viaduct reservoir is the only choice for solving the problem of water shortage in the urban area of the Miscanthus sinensis city. Because the dam is relatively high, the earthquake stress on the dam top is obvious in case of earthquake, and the design of the dam top structure is particularly important in the project.
As shown in figure 1, the existing dam crest structure is that a C25 reinforced concrete wave wall foundation at one end of the dam crest is buried in a dam body, then a 30 cm-thick gravel cushion layer, a 20 cm-thick mud stone pavement, a C20 concrete road edge and other materials are filled on the foundation, and the reinforced concrete wave wall is fixed by a C20 concrete pouring body; however, the reinforced concrete wave wall and the road edge of the dam top are respectively arranged at two ends of the broken stone cushion layer and the road surface, and no correlation exists between the broken stone cushion layer and the road edge, so that the dam top is easy to loosen when an earthquake occurs, the structural integrity of the dam top is poor, and the earthquake resistance is not obvious.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: aiming at the problems, the anti-seismic dam crest structure is provided, the dam crest is designed into a U-shaped integral structure, and a macadam base and a road surface are filled in the U-shaped integral structure, so that the whole dam crest is integrated, the whole dam crest bears the seismic stress together, and the anti-seismic effect is good.
The utility model adopts the technical scheme as follows:
the utility model relates to an anti-seismic dam crest structure, which comprises a dam crest body, wherein the dam crest body is of a U-shaped integral structure; a gravel base and a road surface are sequentially filled in the dam crest body; wave wall is installed to the one end of U type monolithic structure body.
Above structure, the ingenious design of U type monolithic structure can prevent outwards moving the rubble basic unit and the road surface restriction of dam crest, links into an organic whole with the border of dam crest simultaneously, and whole dam crest is as an organic whole, solves the not strong problem of current dam crest shock resistance, has stronger shock resistance, guarantees the safety of dam.
Furthermore, the U-shaped integral structure is embedded into the dam body and is of a U-shaped reinforced concrete structure.
Above structure, the dam crest directly buries the dam in the body, has strengthened the connection between dam crest and the dam body, and U type integral structure is U type reinforced concrete structure simultaneously, and reinforced concrete can increase the fastness of dam crest itself, and the integral of constitution is more stable, is favorable to the antidetonation.
Further, the pavement is a brick pavement with the thickness of 24 cm.
Above structure, compare in current mud stone road surface, the brick road surface is more level and smooth, and compressive resistance is stronger.
Furthermore, the wave wall is in an inverted L shape and is a marble wave wall.
Furthermore, the U-shaped integral structure comprises two groove edges and a groove bottom, the top of one groove edge is provided with a wave wall, and the other groove edge is a stepped groove edge; the wave-proof walls and the step-shaped groove edges on the two groove edges are horizontally higher than the road surface.
Above structure, because wave wall and stairstepping groove limit all the level is higher than the road surface on U type integral structure's the groove limit, can prevent that the road surface from the border dropping, the outdiffusion.
Further, the gravel base is a graded gravel base; the U-shaped reinforced concrete structure is a C25 reinforced concrete structure.
Furthermore, the U type integral structure is provided with the subsiding crack, and the subsiding crack adopts the copper stagnant water to link up.
Above structure, the subsiding crack adopts the copper stagnant water to link up, can reduce the production of subsiding crack.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the problem that the earthquake stress borne by the dam crest is obvious is solved, the integrity of the dam crest is improved by adopting a U-shaped integral structure, particularly a U-shaped integral reinforced concrete structure, and the earthquake-resistant performance effect is obvious.
2. The dam has the advantages that the safety requirement of the dam is met, the structural integrity of the dam top is good, the safety performance of the dam is high for a medium and high dam in an earthquake region, and the life and property safety of downstream people is protected.
3. Simple structure and convenient construction. The whole dam crest is of a U-shaped reinforced concrete structure, and after pouring, a broken stone base layer and a road surface are filled in the middle, so that the road surface is not limited by other road edges, and the construction is convenient.
Drawings
Fig. 1 is a schematic diagram of a conventional dam crest structure.
Fig. 2 is the utility model discloses a schematic diagram of antidetonation dam crest structure.
The labels in the figure are: the concrete dam comprises a reinforced concrete wave wall 1, a broken stone cushion layer 2, a mud stone pavement 3, a road edge 4, a concrete pouring body 5, a dam crest body 11, a broken stone base layer 12, a pavement 13, a wave wall 14 and a stepped groove edge 15.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 2, the utility model relates to an anti-seismic dam crest structure, which comprises a dam crest body 11, wherein the dam crest body 11 is a U-shaped integral structure; a gravel base layer 12 and a road surface 13 are sequentially filled in the dam crest body 11; one end of the U-shaped integral structure body is provided with a wave wall 14.
In the embodiment, in order to improve the stability and the integrity of the dam crest, a U-shaped integral structure is embedded into a dam body, and the U-shaped integral structure adopts a U-shaped reinforced concrete structure; the reinforcing bars of the U-shaped reinforced concrete structure are proper, and the slump of concrete is reduced and the generation of cracks is reduced when the concrete structure is poured. The dam body of the dam should subside relatively stably, the U-shaped integral structure is provided with the settlement joint, and the settlement joint is connected by adopting copper water stop, so that the generation of the settlement joint can be reduced.
In the construction of the dam crest of the viaduct reservoir concrete faced rockfill dam, the U-shaped reinforced concrete structure is preferably of a C25 reinforced concrete structure, a graded broken stone base layer and a 24 cm-thick brick pavement are preferentially adopted in the U-shaped structure, the weight of the U-shaped structure can be increased by the broken stone base layer and the pavement, the pressure of the dam crest on the dam body is improved, the dam body has better interception and water retaining effects, and a smooth pavement is provided at the same time.
In order to intercept the water waves, the wave wall is designed into an inverted L shape, can effectively block the water waves in the horizontal direction and the vertical direction, and adopts a marble wave wall. The U-shaped integral structure comprises two groove edges and a groove bottom, wherein the top of one groove edge is provided with a wave wall which is close to the water surface, and the other groove edge is a stepped groove edge; the wave walls and the stepped groove edges on the two groove edges are horizontally higher than the road surface, and the base layer and the road surface in the U-shaped integral structure are protected.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. An anti-seismic dam crest structure is characterized by comprising a dam crest body (11), wherein the dam crest body (11) is of a U-shaped integral structure; a gravel base (12) and a road surface (13) are sequentially filled in the dam crest body (11); one end of the U-shaped integral structure body is provided with a wave wall (14).
2. An earthquake-resistant dam crest structure according to claim 1, wherein said U-shaped integral structure is buried in the dam body and is a U-shaped reinforced concrete structure.
3. An earthquake-resistant dam crest structure according to claim 1, characterized in that said pavement (13) is a 24cm thick bricked pavement.
4. An earthquake-resistant dam crest structure according to claim 1, characterized in that said wave walls (14) are of inverted L-shape, being marble wave walls.
5. An earthquake-resistant dam crest structure according to claim 1, characterized in that said U-shaped integral structure comprises two trough sides and a trough bottom, one trough side being provided with a wave wall (14) at the top and the other trough side being a stepped trough side (15); the wave-proof walls (14) and the stepped groove edges (15) on the two groove edges are horizontally higher than the road surface (13).
6. An earthquake-resistant crest structure according to claim 2, characterized in that the crushed stone substrate (12) is a graded crushed stone substrate; the U-shaped reinforced concrete structure is a C25 reinforced concrete structure.
7. An earthquake-resistant dam crest structure according to claim 1, wherein said U-shaped integral structure is provided with settlement joints, and the settlement joints are joined by copper water stops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021420931.4U CN212865778U (en) | 2020-07-17 | 2020-07-17 | Anti-seismic dam crest structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021420931.4U CN212865778U (en) | 2020-07-17 | 2020-07-17 | Anti-seismic dam crest structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279374A (en) * | 2021-05-20 | 2021-08-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Rockfill dam top earthquake-resistant wave-resistant structure and construction method |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113279374A (en) * | 2021-05-20 | 2021-08-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Rockfill dam top earthquake-resistant wave-resistant structure and construction method |
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