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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 5.39.217.764 U% E6 h! ^* @, y/ d  W2 a  J

8 @+ o6 b- T1 ^' [  uTVBNOW 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。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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2 o7 S0 E! ]6 P- S6 q5 vMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.762 o! d+ `; Z6 f: n" w4 z
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇( M! K6 S. k4 Z* @1 X) t( e
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
7 E0 a" r* @/ Z% J& Stvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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( \: r9 c, _9 F公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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Answer:

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: D( \* q* U* J7 mIt only needs to be designed to withstand the weight of  the water!
: Z* }, w8 Y/ N- c( U5 o) x公仔箱論壇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
% M" K' u2 A0 D% ^6 |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! K$ L6 F6 w5 b
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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. m  z# h! z) X# l3 @2 ^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。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" h8 u* Z: ^$ D: m+ x% X
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
( ]4 c) G* _" t) E  U也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。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。+ B6 L# I# I8 q6 a
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。
% j9 `4 h6 `3 B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。5.39.217.76. `1 h; p: o9 {  |- g
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
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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
1 ]8 j$ z: A/ U5 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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  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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