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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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: h# Z' F' I* P% N. tIf you are not a Physics person, read on and learn a fact of physics.   
+ `* y) W* v! Z$ \% ]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。AMAZING!
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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
$ P0 ~/ Q; @# J0 D& [8 hThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。! _* H6 i: ]! J, Q2 K. ]/ |$ K
It is located in the city of Magdeburg, near Berlin.
公仔箱論壇# W: ?! b- F1 F6 o8 G1 f

, a9 {: ~* D8 B( Z. _7 k- ?- v公仔箱論壇The photo was taken on the day of inauguration.公仔箱論壇- T& ^" Z- f. Y* {; }: B4 x
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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+ G. w- X. G" A- M4 }3 mtvb now,tvbnow,bttvbQuestion:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
8 |) [- c& A+ E3 {& i- p公仔箱論壇Or just the weight of the water?
5 V- W  L0 G6 \- U7 M) |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。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。' w& E+ U1 X: N  s5 h0 ^* ]* k
Answer:
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It only needs to be designed to withstand the weight of  the water!
0 G7 h* b* f- d( B2 v  c; 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。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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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。% H! K: A5 f' A$ j8 K' N
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.
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% U; c* N) l; O4 B& d+ dConstruction 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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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7 _) {! V$ a$ H# K0 e
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
. f/ h5 I; P; v2 H( U  \5.39.217.77:8898也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
  O+ x3 O( p, G1 R* H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。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。' r% n% I( T" o( J
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。
& u  {4 I2 }. Z$ W$ R& G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+ G; r; z: J! ^, q- V% u
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。 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。* {9 X. d5 Q0 W& C) D# X+ g" _
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7 @# i) ^! p8 U+ J5 O( Y& V5 X
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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多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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