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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 3 z/ {# [& A) W; r
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If you are not a Physics person, read on and learn a fact of physics.   
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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! 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 o5 P9 H" \8 K) _: D
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. " q7 e7 p% R! u
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.tvboxnow.com* c  Y+ h; ^) `' _% V0 l" p
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇/ v3 i6 {( _+ u
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Question:

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0 I% y: Z" E7 K+ n6 `tvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
; }5 l. E+ \8 m3 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。Or just the weight of the water?
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Answer:
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0 {9 F( X+ N+ N" K$ @8 O  d8 b2 STVBNOW 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。It only needs to be designed to withstand the weight of  the water!
, k2 ?5 `* y9 P: k' f0 Q! ttvboxnow.comWhy? 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 Germany7 Z# N' h6 z5 V6 ?. 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.公仔箱論壇4 U7 ~5 |& g6 A
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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. {& A6 b3 w( fConstruction 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
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0 [  j. }* K& Q! s. E也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。tvboxnow.com8 ?: Q4 I3 E$ k; d! O7 s3 R
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。8 n  K0 r7 s4 N9 n3 q% h5 }
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。9 J2 y5 f( y/ N- B" P
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。/ [" i' P# i6 A9 A& L4 {" a
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。 公仔箱論壇& K! m, h+ ~2 f$ `9 J/ M4 P0 v3 M) @
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
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多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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