Constructii Hidro ppt

8/13/2019 Constructii Hidro ppt

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Efecte ale CH


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Baraje mobile / stavilare


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Baraje gonflabile


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Portile de Fier I


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Hagestein - Olanda


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Maeslant Barrier - Olanda(Rotterdam)


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CONCRETE DAM EVOLUTION

Predecessors of modern dams are masonrydams dating back more than 2000 years.Upstream and downstream faces have been

formed by dressed masonry and the main body comprises rubble masonry bedded inlime mortar;

With the advent of Portland cement theconcrete dam has largely replaced the

masonry dam.

Along the years the concrete dam hasdeveloped into a number of specific types such as the buttress and the doublecurvature arch.

The use of earth moving plant has firmlyestablished roller compaction as thefrequently preferred method for massconcrete construction.

In gravity structures the water thrust fromupstream is resisted through slidingresistance at the base.

RCC dam

FSHD


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Masonry arch


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Multiple arch and buttresses


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Massive Head ButtressPoiana Uzului Dam, H = 80m


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Arch dam


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8 m

RCC Dam


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EMBANKMENT DAM EVOLUTION

The earliest dams, and even today thesimplest dams, are homogeneous earthembankments:That is, the material used for the constructionremains essentially constant throughout.

The inevitable development was the zoneddam.

In the case of the zoned earthfill or rockfill dam,materials are selected and used for their specificproperties and in proportions guided by local siteavailability.

The next great change came with theincreased compaction effected by vibratoryrollers that permitted the construction of

faced rockfill dams.In such dams, the principal body is composedentirely of rockfill, and the waterproof membraneis placed on the sloping upstream face. Modernfacings tend to be of reinforced concrete or asphalt

HomogenousEmbankment

ZonedEmbankment

EmbankmentwithWaterproofFacing


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Homogeneous earthfill


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Inclined core earthfill


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Clay core rockfill


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Concrete Face Rockfill


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Asphaltic core Rockfill


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Asphaltic Face Rockfill


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Schema de principiu a unei ecluze


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Three Gorges (China)2 lines of 5 locks + Shiplift (120m)


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Lifturi verticale / cu plan inclinat


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Falkirk Wheel (UK)

Th F lki k Wh l


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The Falkirk Wheel(Scotland)


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Boat entering the Wheel


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the boat

ew o oa s n e


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ew o oa s n ecradles

Date post:	04-Jun-2018
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