本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 ( Z: R! }& i4 E/ n( [. I, z, X6 u, e
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If you are not a Physics person, read on and learn a fact of physics.
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Even after you see it, it is still hard to believe!
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0 J0 M% e& P0 V. r0 L1 B- qMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
, e; B2 p1 i1 g" P8 u( ]This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
% g$ H5 j* x# I+ F0 w公仔箱論壇It is located in the city of Magdeburg, near Berlin./ w/ j5 X1 W d
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。' i. u8 {: g# L4 _/ v
The photo was taken on the day of inauguration.
" y, U" e) v& m! y! c1 p$ ~- gTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
5 n6 M2 M* x- r$ D: X& ~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。
0 p: u- U" L3 ]. C ?公仔箱論壇Question:5.39.217.76, q- n! Z5 ?5 V% w! v
* s x& p# M- f5 RDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.768 T6 c' E$ s: F
Or just the weight of the water?
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/ Z$ M j" B; x0 Z* F {Answer:tvb now,tvbnow,bttvb: H4 j6 ~5 t& z4 T+ T" r6 b. W
( T- v9 J1 _% U. S0 R+ @5.39.217.76It only needs to be designed to withstand the weight of the water! ) z7 Z1 s! E/ k5 D4 o
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 Germany5.39.217.76" v- t% `/ A5 X8 a+ }
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.5.39.217.76* V, q* k5 C2 `* b6 Q1 m% }
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. 5.39.217.765 _) W- S! Q/ v0 |; W
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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 H; M; d# W) B& ?/ `7 [% Y
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3 T& d* [/ n$ G. N& 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。$ a; Y. j1 _+ O% [7 B# {) |
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