本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ) _/ q3 w7 I; F; F4 Q
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If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb: X, I. K. l' B; N; [# V' G
AMAZING!
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Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb i* @8 a, q+ C0 s; C6 C2 c
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
- ] n8 z/ A# x2 d2 h% Y2 z6 `1 atvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. . f g$ k2 e0 O `
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
5 Q S0 e( n0 `0 \8 H! xTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.* j, w5 a. Z1 W& h
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
+ y" |* Q$ a5 t: 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? 8 ~* f. V' X3 s7 k5 C- J
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6 Q V+ E% o |+ }1 H( U$ T5.39.217.77:8898It only needs to be designed to withstand the weight of the water! 2 S; I+ x _ u: Z. k* C
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! \( L, A* R% ]0 t9 ?! V6 g
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.
' \. i% ]; w3 ]; _/ l1 l. B8 T$ BThe 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. + I' w5 H7 }3 ^% W: u) X
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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. 1 f7 ]) s7 O: z% C( `4 Q
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# I6 c# n* J9 B1 j0 ?公仔箱論壇
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