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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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: {6 w0 h6 U' o" F, ltvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.   
3 h% }" m: y  b. M0 B/ jTVBNOW 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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6 d% G, o+ q( ^& n3 j! M# 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。Even after you see it, it is still hard to believe!

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0 y5 A9 \/ H& [; t. y: o7 ]! Jtvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
) `+ D4 T. L% m+ BThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5 H  P9 D- E6 ^' l
It is located in the city of Magdeburg, near Berlin.

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0 e- V2 N' z" ^. OThe photo was taken on the day of inauguration.
; S( ~; u$ i/ m2 l, hTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.* r, P. [) D5 |5 {% c! Z
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Question:
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。. Q1 ~+ O2 @3 ]3 s
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
- d4 P1 q) N0 |2 gOr just the weight of the water?
% P" {/ |1 k9 f0 ?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。
6 j; }# |+ N# a3 q& g. k, }/ K5.39.217.77:8898Answer:
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It only needs to be designed to withstand the weight of  the water!
1 x2 _- K* H* CWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded

2 f% K/ r. w  I, MTVBNOW 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。) c8 l: {6 T: M; n) A. q5 _, |) u# U

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The Incredible Magdeburg Water Bridge in Germany
4 I" k, X1 p% @4 x9 G  b公仔箱論壇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.tvb now,tvbnow,bttvb- A  }% U, K) s! v2 j
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. tvb now,tvbnow,bttvb7 D* |" j- T4 d
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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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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 f- b/ e' h4 q
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
- V0 ^2 ^3 q+ O( F! X) K也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。tvb now,tvbnow,bttvb  y& e" X  ~1 g& m5 m  D
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,bttvb, h9 D3 X+ f' `
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。tvb now,tvbnow,bttvb1 V4 I- @4 A3 A- e! }  o
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
! J( J7 Z* [/ i. u2 NTVBNOW 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。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。
  N0 B  o3 O7 K0 |5.39.217.77:88982003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
# a! z" v2 P# N: n$ l5.39.217.77:8898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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