本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ' Z4 l" R; S) x* o* k# z. q$ ]
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If you are not a Physics person, read on and learn a fact of physics.
' j$ J; O D% e& G6 [5.39.217.77:8898AMAZING!
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9 l8 Y/ j5 m6 ]2 gEven after you see it, it is still hard to believe!5.39.217.77:8898; ~8 e% c* w9 G) f
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
0 D5 Z- \$ j* z' ftvb 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. tvb now,tvbnow,bttvb' ?8 J8 G# i, I4 S
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.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。) F6 Y% k; R! X2 N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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/ u# J4 @; x3 [ b$ A% N3 H( O4 N- U" sQuestion:公仔箱論壇2 H# V; ~8 a$ t, k5 L1 g7 Y
* F* H( Z$ a: z6 D6 v$ q; @Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,% y# B% A3 @, s( f3 P
Or just the weight of the water? 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。' p% C+ X7 Z& ]: {7 R
8 Y/ i5 j) h# F' U8 t$ J公仔箱論壇Answer:
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It only needs to be designed to withstand the weight of the water!
m Q0 E- t& n! E0 I9 x% b+ ]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 Germany8 w; ]2 D* g+ N8 k/ m! J# q
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.
( r) ~0 V2 ^/ D1 L- s2 \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. tvb now,tvbnow,bttvb1 V! ]& @! `( u$ w O
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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. : }( N& y. r; ^& O( c9 \
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% [- `8 @) L4 X o' z" Y, r4 u. B5.39.217.77:8898
9 N6 A5 ~3 W/ j/ U! y: N公仔箱論壇3 N& t8 G3 V& I
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