EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 www1.tvboxnow.com. j5 \) g* H3 I$ i: \8 k) f
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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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* m( b/ R1 T: ?6 owww1.tvboxnow.comMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇3 f n( W1 L+ Y0 l, L) H: f) s
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
- o0 E4 G. a( _6 k$ u- @' G* i* X公仔箱論壇It is located in the city of Magdeburg, near Berlin.) Z0 ]* s# ^+ I- `- p
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The photo was taken on the day of inauguration.公仔箱論壇/ I* P/ _: @5 y6 i2 F( n7 ?
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。( F4 {. ] V$ M. U4 k
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,9 p1 N) ^# n' C1 I$ e: M6 B
Or just the weight of the water? ! Z. [5 b# ~$ C9 b8 B1 w
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Answer:
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: Z& I8 v8 k; k. V9 E( 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。It only needs to be designed to withstand the weight of the water!
' S( p* X* }8 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 loadedwww1.tvboxnow.com3 |. ^2 ]2 U. m: {& k
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3 b8 \1 S9 T( I- f: r1 `' K7 B' Zwww1.tvboxnow.comThe Incredible Magdeburg Water Bridge in Germany& N3 M3 t2 G+ m# T7 ]
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.
& e5 \: ?% F' i, ?( WTVBNOW 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。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. % m7 }' b+ P8 j2 f: f+ @
( E* w1 }8 ^3 J! i/ cTVBNOW 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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