本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.
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6 A+ `( u+ @' }% {) s/ S* REven 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。* i+ q5 }0 K' w
This 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。6 v, d% t; u; s1 A ~# W
It is located in the city of Magdeburg, near Berlin.
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$ J/ \2 E( @; a5 p4 m! dwww.tvboxnow.comThe photo was taken on the day of inauguration.& c2 C# z+ l) ?6 I3 x
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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+ X7 u# l1 ?: g) h' ^8 h2 @Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
" G$ }; j1 H8 `tvb now,tvbnow,bttvbOr just the weight of the water? ) E2 d* P8 m3 a: [6 m/ N% |
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇2 @9 h S& A9 c1 W) {1 @# i
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedwww.tvboxnow.com* z! x0 N: \" Q4 S3 j, H
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The Incredible Magdeburg Water Bridge in Germany) T J$ Z: h6 S+ o3 n( E1 u4 |
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.www.tvboxnow.com9 a; p- H& p n7 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. # s3 C/ k, w8 e' @& _
3 S! `$ n. U5 N. ^9 |5 dwww.tvboxnow.comConstruction 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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( Q9 [4 I% D* F. Z4 i0 I& a6 Jtvb now,tvbnow,bttvbTVBNOW 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- G% G3 M# y1 O+ A
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