本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇# o; z8 x' X, V" K2 g. @
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If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇; S9 S8 T; l- e- V o
AMAZING!
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Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb2 r$ u6 Y" a. @$ e$ {9 m
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
1 D+ ~, {- {2 O, I+ R+ y5.39.217.77:8898This 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。' @" K0 S- P3 _ v4 N: R# Z
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.5.39.217.77:88982 B4 N1 M: a* B6 M! w! K% t( o8 _
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.* j' n9 ^3 Y- q
3 Q/ N! A C: O6 L1 GQuestion:tvb now,tvbnow,bttvb; R0 n7 Q9 P1 p: k; w0 ]: w: l* n
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
# k5 J0 {7 v2 _0 D3 j" BOr just the weight of the water?
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/ {2 H l% B3 X6 `% Ltvb now,tvbnow,bttvbAnswer:5.39.217.77:88982 Z+ q0 x. m! f, K; Q
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It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb5 P, e7 U% o, l+ u6 {
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 Germany4 s. q6 S2 g0 x
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." q+ Z, \# A6 {! `- P' h# }
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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3 C7 j* r3 ?, y; ?2 l" hConstruction 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. 5.39.217.77:8898$ M+ h( H" T4 N. o
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+ ~8 X$ T! ]6 s2 |公仔箱論壇5.39.217.77:88988 k! P5 x/ O" k: y' y
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發表於 2011-10-2 10:09 PM
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發表於 2011-10-4 11:33 AM
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發表於 2011-10-15 09:35 PM
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