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. 公仔箱論壇9 c% C% f, }6 M0 m% b
AMAZING!
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5 k: b, c% X9 {Even after you see it, it is still hard to believe!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。 T) I3 I; {5 L$ b( O! j- a
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/ y; V _$ |: Y: Y' l6 U# v: q) N4 \0 eMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
5 e1 J" y" B9 l$ _# K" N5 s1 TThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。; Y ?! V) }# Q9 d
It is located in the city of Magdeburg, near Berlin.
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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。& ?3 ~4 ?' H* U' p Z
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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4 L& A; W9 ~4 \5.39.217.76Question:5.39.217.76" Q( Z- ^5 }+ N2 b7 j
$ D* u6 z0 Y y) kDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,* I8 R+ Q" E Q1 T' j; B& Y
Or just the weight of the water? 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。- l4 A* I8 R& S% u) h8 s/ m
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Answer:* R& x( g' ^5 a5 ?
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It only needs to be designed to withstand the weight of the water!
4 G2 }8 ^1 y# ~9 H5.39.217.76Why? 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; o. L' k) i* S0 s/ s5 u' Z! a% l1 _
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.
2 L" k* x6 Q6 B3 N5 X1 yTVBNOW 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 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.
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