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.
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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!
3 C" z \7 a) y' Z3 e! E" e" EThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
" Y( o1 A1 v+ C! f, C& C! _7 TIt is located in the city of Magdeburg, near Berlin.
* g. D. K! { f1 Y4 C8 p4 T( ATVBNOW 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。
- {# k# W7 {5 I. {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。The photo was taken on the day of inauguration.
6 x" y; ~/ w# U H/ i$ D: R5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76- z$ L) D o6 S0 W
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Question: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 I% V7 _7 C* Y' t: \
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。* X+ q: t1 ?5 D; `
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,8 i. l. N" V9 I. X8 T
Or just the weight of the water?
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Answer:
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It only needs to be designed to withstand the weight of the water!
6 T$ V; H! x! Y/ T+ `8 l! 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。Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 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。/ k# S/ {) R# e- V
& R8 N' C# F0 z0 \/ c0 {& ?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。$ Y3 c6 X) X7 ^
The Incredible Magdeburg Water Bridge in Germany
8 p" G1 Q+ J# l2 CThe 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.
/ V% W* M! w) X- B- E5.39.217.76The 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. 5.39.217.76/ w( X8 g+ G# x6 h! H* A
, O& i7 Z; G3 M5 m% o0 ^( nTVBNOW 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。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.
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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。; q5 b6 W- d: E/ d/ R' X
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/ Z& L; X% M) \# LTVBNOW 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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