本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇! m, e+ o4 R) |" y4 U
. B: @% w, h" jtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics. 5.39.217.76 j. o/ e1 g) ]. I; p j2 E! k
AMAZING! . {& W) P3 y6 p
! c/ h: m6 Q: r/ ?* p! @9 w1 G' AEven after you see it, it is still hard to believe!
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: {6 I: ^0 z% j D7 GMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb: k" ~( Q3 A1 w0 F9 Y8 v
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. n4 y+ f/ j9 t5.39.217.76It is located in the city of Magdeburg, near Berlin., w! c4 D2 t+ r' W
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The photo was taken on the day of inauguration.5.39.217.767 L0 q5 E& y" i4 X& t# b
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:" n4 i, I7 a, V4 w V2 x3 N
& f6 r" Q& `% R/ ~+ _5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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Answer:5.39.217.769 g+ s8 N- _! B* y2 Y3 x
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It only needs to be designed to withstand the weight of the water!
! w9 X" I* ^ B5 P* N X5.39.217.76Why? 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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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。5 H8 ^" ~9 _, {5 E) B& Q+ Y7 p
The Incredible Magdeburg Water Bridge in Germany
; m6 Z; T1 K- b) s ?5 B5.39.217.76The 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,bttvb$ |, y+ O4 \6 J7 P, \" [
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. # l M- }# ]* k6 K, ~8 z5 i
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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. 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。' f. e5 w+ J8 j$ x8 d5 L. y
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