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.
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$ M) T% K7 \, ?+ U- q( Q5.39.217.76Even after you see it, it is still hard to believe!5.39.217.76# U6 Q7 K3 t6 d0 q
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ' h" |- O) r6 w3 e; c# v! X
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. , z: m8 y( H) D
It is located in the city of Magdeburg, near Berlin.
" B2 ?, r! V; F1 w( l) L) 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。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。! O+ L8 X3 c0 K& E4 f" K; [
The photo was taken on the day of inauguration.
3 A1 \0 v$ j7 B6 s! r5 n0 P' eTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.3 T, G. d% C/ S" m7 g/ g
7 B8 H2 l/ O- j4 a4 _" m3 C* RQuestion:$ Z; Q! B! ^" Y! u& J
2 ?3 E, K7 d0 o$ A c公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
) t" j# Y6 g! @: `; o5 B$ y! UTVBNOW 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。Or just the weight of the water? tvb now,tvbnow,bttvb/ P" d& @8 Q! X5 t3 D4 Q& ~
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Answer:+ ~3 h! S) T" H4 |
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It only needs to be designed to withstand the weight of the water! 1 m! M$ c+ w5 Y3 n
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
4 ?# _, z1 O" C+ p# }4 w' }" t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.
1 T' g) k5 L% d! C2 ~2 X- ~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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6 k& u2 H4 r9 l$ I% l1 ^3 i+ m& nConstruction 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.
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6 ^6 e% `! B6 z. Y! H7 m7 c: i) e8 `0 U5.39.217.76TVBNOW 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。7 u/ q/ H* K0 j8 D6 h
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; E* t5 F9 F8 W% f, Itvb now,tvbnow,bttvb
3 C/ {0 W9 S- b1 H, 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。
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