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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
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) w5 C& {9 ~* W3 D. O1 n# hIf you are not a Physics person, read on and learn a fact of physics.   
# \6 J1 Y2 _8 @* M公仔箱論壇AMAZING!

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8 k; g9 |8 K* Z8 }4 wtvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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3 \3 o/ G8 A* }, ]3 p公仔箱論壇Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
2 a  K' W  }7 f5 N8 x6 etvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ; @, L" H4 d. [/ p( ~( @( C' a8 C" X
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
3 L9 o( x' q1 T, b4 C; z$ B# d( ZTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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0 u: y9 k' N, D- m. e8 gQuestion:
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  G3 u* e+ j! g2 C  ?公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,/ Y: q/ g) c8 W# q+ [0 u
Or just the weight of the water?
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Answer:
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It only needs to be designed to withstand the weight of  the water!
4 `& D6 z2 U: ?" Ntvb now,tvbnow,bttvbWhy? 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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The Incredible Magdeburg Water Bridge in GermanyTVBNOW 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。! d% k& f, a& P
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.公仔箱論壇6 u2 h+ e1 J0 A$ G4 A3 U
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.
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Construction 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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# o, H1 q. Q2 i& d3 ftvb now,tvbnow,bttvb5.39.217.760 T) S3 f# R7 }* T0 m4 B/ Z

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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
* w# g4 {+ T; q) ttvb now,tvbnow,bttvb連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇5.39.217.76! U# F- b. L0 V8 h8 d* d' M
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。公仔箱論壇4 V( y0 I: H5 t2 R4 H; b5 L- e
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。
1 B" F- M$ u& @& o9 X5.39.217.76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。
% @2 b3 E. {) e5 c公仔箱論壇於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。- B( F# ?' A, {! u6 j/ N; F' ~
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。 9 K+ r* _' V' S
2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和公仔箱論壇' }0 f+ z! P6 t) {6 B
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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