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EVER SEEN A RIVER OVER A RIVER?

本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76* }- P: F+ x8 A" {( t* N5 {5 R

$ S1 X/ b3 l6 c7 M& T, L公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.   公仔箱論壇5 O5 I5 d6 r* Q6 [  w
AMAZING!

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Even after you see it, it is still hard to believe!

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) S! V3 n3 S, \% g% RTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
9 Z9 ]! {7 B, C2 u: ^7 ^TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.764 F# o" M6 z+ i3 f
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.2 A- A# ]" g+ z# s  H1 z) s1 W& g
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇4 I' P4 I& G, x5 O# J. x

# l0 A5 F, E- ]TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。Question:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,. L! i! ]- ]4 k0 x( G* L+ E- y
Or just the weight of the water?
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) A8 B1 g" ?: ~$ j8 F' n. {4 ^+ {6 RAnswer:

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' M1 N( ?! M9 |( b6 @' GIt only needs to be designed to withstand the weight of  the water! 5.39.217.767 h* J# h4 j8 X# }3 |/ J
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded

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tvb now,tvbnow,bttvb( I: i& a* n9 z9 x& H& ?, q7 G5 c: j
The Incredible Magdeburg Water Bridge in Germany
6 c# u) Y2 r! i% T% E# N# tTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。The Magdeburg Water Bridge is a navigable aqueduct in Germany that connects the Elbe-Havel Canal to the Mittelland Canal and allows ships to cross over the Elbe River. At 918 meters, it is the longest navigable aqueduct in the world.
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The Elbe-Havel and Mittelland canals had previously met near Magdeburg but on opposite sides of the Elbe Ships moving between the two had to make a 12-kilometer detour, descending from the Mittelland Canal through the Rothensee boat lift into the Elbe, then sailing downstream on the river, before entering the Elbe-Havel Canal through Niegripp lock. Low water levels in the Elbe often prevented fully laden canal barges from making this crossing, requiring time-consuming off-loading of cargo. 5.39.217.76  V6 @4 v4 i! \, z% X

3 ~& w7 k) x9 C/ _1 X5.39.217.76Construction of the water link was started as early as in the 1930s but due to the World War 2 and subsequent division of Germany the work remained suspended till 1997. The aqueduct was finally completed and opened to the public in 2003.
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公仔箱論壇' i# z0 Y6 {( g5 |" t

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平壤核子能源研究所
這宏偉壯觀、傲視寰宇的工程傑作早在 1919 年工程師們即已提出公仔箱論壇( I, G+ d# l) ^" Y8 h
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
) |  h7 j3 v; o; ]; s% ETVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
# i2 n# h0 z( E9 H5 L1 E# d- w0 n; n" F公仔箱論壇隨後的冷戰時期,德國分裂,該專案被東德政府無限期地擱置下來。tvb now,tvbnow,bttvb1 c) U3 ~4 w/ B" S4 L: t1 E) [$ [
德國重新統一後,隨著道路交通重大工程規劃的編制,水橋再次成為一個優先專案。TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。( U$ g( s, v& X: g: e7 Q
於1997年開始建造,經過 6 年,耗資 5 億歐元,2.4 萬噸鋼材和 6.8 萬tvb now,tvbnow,bttvb. Y  P, w  m5 S4 q' f& q2 d( o8 r, \0 Y
立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。
$ N# J3 D7 u4 }9 y! i1 m5.39.217.762003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和% O& t$ |  M0 ?* E% f" E
易北河-哈威爾運河之間運行的船舶不得不繞道 12 公里通過。
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  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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