本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇+ f! X# c7 T$ r- `& l
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If you are not a Physics person, read on and learn a fact of physics.
3 @! m7 e, }- h4 S, v0 _( K5.39.217.76AMAZING!
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4 L1 B( U4 k1 {+ a7 B) ]) ]Even after you see it, it is still hard to believe!
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! o+ m9 Q1 ], g. b, f: t8 u公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.76+ r- P0 B2 Y1 `1 z7 J' f) N b
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
$ s! a# r) C+ t! P$ JIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.1 z G6 d& ?9 L" Y/ Z! m
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.8 f) e( Z1 u' @
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Question:5.39.217.769 A" q- T, V' Z" f0 {. S8 Q; O
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, M ?+ D) o/ f( I! m8 O
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,% G% L2 A& m" N( ^; f
Or just the weight of the water?
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* t& s! V. I P& K. m. ]1 J7 Ltvb now,tvbnow,bttvbAnswer:公仔箱論壇/ `4 M' ?7 W2 q% t
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It only needs to be designed to withstand the weight of the water!
& x! S1 ~5 i# m) ?5 q! a( V- L, oTVBNOW 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 loaded
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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇1 R. a% V1 u9 \) {$ a6 {. V2 \/ m* n
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.
0 K) X) b2 o( E ?# P0 p# Z+ c5.39.217.76The 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,bttvb3 q/ \. b; D6 ~) U" R' d
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# Q+ T: x$ W) P3 TTVBNOW 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。5.39.217.766 y: T8 i8 Y% b, ] L& j) o
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