本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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/ [- c% y2 X4 Q
% G) U" |9 Q; y6 S0 \7 u0 [: wtvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
( P: \ P. ]) RAMAZING! 公仔箱論壇, n) P3 A. V. J% D" ~
+ f% | V& w. N1 w/ K" @Even after you see it, it is still hard to believe!
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5 c/ h% v* w |' Z4 VMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.76- Z3 `4 K& B6 h1 \& w5 e
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
7 x+ y- ~8 o( a K2 IIt is located in the city of Magdeburg, near Berlin.& e/ ~* V9 f8 K: O
( e( W: [2 x9 y3 t6 ?' hTVBNOW 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.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。5 y; x8 p* f0 Y" m$ l) G/ }' P
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.2 G7 z' R' t; |8 @# m9 O
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。& Z9 q1 i3 \: F! @, c% p& z' E
Or just the weight of the water? 公仔箱論壇( N9 B; o* `- Q6 M/ V
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Answer:
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' C% t& {* z5 y! x0 q% N5.39.217.76It only needs to be designed to withstand the weight of the water!
0 I: }/ S$ r! V- e公仔箱論壇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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" @$ t8 z4 d9 R" r" D& t/ rThe Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb) x4 v3 k6 d% s+ ~2 n, |% K
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.tvb now,tvbnow,bttvb/ n9 n1 e# i& `, W* j1 e9 q
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. 1 `6 U' Z3 z& b' I' D( j
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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。$ [; m9 J- S, Q, `+ k
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