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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 tvb now,tvbnow,bttvb$ v% M& y. F7 t1 o8 H% e1 h

6 L+ G" i" b6 A$ h$ s公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.   " a9 L9 @/ v# b7 t  i1 M
AMAZING!
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& p- n: V' {6 U6 k- c7 Atvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!
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) E4 d; q5 h& L5 a3 GMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 1 z, r% n0 M) O' v
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 4 P) }( d3 p6 ]( a3 ^$ u9 ]6 f
It is located in the city of Magdeburg, near Berlin.
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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! Y' S* W8 i+ g' S, \
The photo was taken on the day of inauguration.
3 W! e$ Q7 q; S6 g9 `To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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1 V. @# d+ T" _8 ]9 m& iTVBNOW 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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. g# p  U+ ]% \/ ?$ \  {) mtvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,7 I6 A0 \( M$ z) [/ Q* K$ r4 U
Or just the weight of the water? . D9 X0 R1 \- @# e  }; u

* h9 v9 X) I1 v, TAnswer:
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It only needs to be designed to withstand the weight of  the water! 公仔箱論壇! f- b1 m2 `# u
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 Germany
* X8 q7 E4 |$ m( R9 Ptvb now,tvbnow,bttvbThe 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. 公仔箱論壇0 t3 [- M4 M) O6 j. a
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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1 }- F! Y. T9 [: G
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
! v6 u% I6 @# i" k5.39.217.76也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
# D. B$ I. `: gTVBNOW 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。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。公仔箱論壇: M3 O% [7 U- i- A, q1 S5 X# |
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。
! C+ R$ P7 W+ B. @: m  _' 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。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。  o$ U9 M6 A7 ~& {  I! @+ E
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。
" `: Q% G0 V) `7 v" v公仔箱論壇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
" F8 d' d  H- m; c8 ]% g8 e5.39.217.76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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