EVER SEEN A RIVER OVER A RIVER?
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. & |) R2 p/ R2 {+ b; \
AMAZING! 公仔箱論壇* ]! b, j3 d, _1 @
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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
& q' m7 K; i- d* p2 y7 f3 n3 KThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. $ e) r7 ]9 _1 O3 G4 i
It is located in the city of Magdeburg, near Berlin.* ^( \9 U% Z% c1 m- I1 E
$ T2 p1 d9 ?- h2 Wtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
8 g$ e% q! `% rTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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* z6 N V9 q3 F公仔箱論壇Question:公仔箱論壇0 K H4 B& V2 j W8 A9 D8 W
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
: s+ N5 b+ M7 J# }; z( W7 ~& B5.39.217.77:8898Or just the weight of the water?
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Answer:* A. @7 a/ V" g, H: R
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It only needs to be designed to withstand the weight of the water!
" g1 M, z( M7 ]2 H5 N) g( P% AWhy? 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 GermanyTVBNOW 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。- |$ x u M- Z9 m
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.5.39.217.77:88983 W8 S# n1 w3 j/ `( R3 w& G
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. tvb now,tvbnow,bttvb9 U2 Y# c7 P) N; {9 d
7 C3 @5 d3 M8 Z1 J2 u# W6 f, eTVBNOW 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。* l" U: q' o. m7 u& L
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