本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 7 t H5 E8 { @+ Q: Y: F* t& |
5 u, E# n' [. R+ A# y: f* PIf you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb5 E! c/ ^2 m+ r+ b
AMAZING!
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: ^. j5 W# u4 S$ @1 b, ^8 U公仔箱論壇Even after you see it, it is still hard to believe!
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! ^% c1 {3 P1 h# o/ F5.39.217.76Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb( ?! X+ y, ^8 z1 E3 v) n# |2 X9 x
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 _6 d; r! e6 b. v8 w) aIt is located in the city of Magdeburg, near Berlin.8 r M/ g$ y% A4 ` u
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The photo was taken on the day of inauguration.
/ X! y% i/ `9 t0 w; ^$ H5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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8 }- ~. U" Y5 g9 dQuestion:( \# p, I+ S* k
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
& p* ~. E/ X2 T/ \& |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。Or just the weight of the water?
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Answer:
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2 t( l( |0 T J. B# P1 l% MTVBNOW 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!
' C: M5 e4 {9 m# 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。Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.76# `/ M, B6 y- ]% |
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The Incredible Magdeburg Water Bridge in Germany$ M9 v) H. i- N# K4 N8 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.tvb now,tvbnow,bttvb0 z h# x( p* K, b$ z
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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- ~* O) Q/ N+ t( Jtvb now,tvbnow,bttvbConstruction 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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; Y) Z1 R* I5 n- h* w* G5.39.217.76公仔箱論壇* R) d" N: z" [
9 T( S& F2 Q8 S: 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。5.39.217.76' k: P7 i |5 i7 s: W
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