本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics. ' M$ y% o* }3 G
AMAZING! www.tvboxnow.com+ t6 u+ O( U0 P& {
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Even after you see it, it is still hard to believe!. L* o" I1 R8 r( h
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 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。! a& e: ?5 j" G, c/ V* U) T
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 6 m0 C) s: \* e+ s" j8 X
It is located in the city of Magdeburg, near Berlin.& r% d. x0 D& \
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The photo was taken on the day of inauguration.公仔箱論壇5 a9 H0 o7 O$ \
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇. R+ }2 I6 g q! u; X' I
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
4 C0 F0 {" U) @3 oOr just the weight of the water? 公仔箱論壇3 S! o4 I' a D
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It only needs to be designed to withstand the weight of the water!
# v* v+ M7 G3 a4 C7 stvb now,tvbnow,bttvbWhy? 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 Germany
. K( A5 T3 i9 Q+ s- R2 A6 X; M公仔箱論壇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.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。# i1 T0 ]! j ?
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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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. 公仔箱論壇7 _: }# [4 D C0 ~
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