本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb: D3 d! ^# Z3 a2 q6 Y3 b+ L
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If you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb; C. t2 c7 T* i# ]* h3 J
AMAZING! 8 b* z- a( N1 H, {
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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!
; L7 t, W8 S& V1 @; j, V V( btvb now,tvbnow,bttvbThis 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。& d% ]* z) Y) D, v W7 e8 W
It is located in the city of Magdeburg, near Berlin.
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! s4 Q8 S5 f: i) r' L8 M2 Dtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
# {# p' Y3 N# G0 WTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! i: m) J H* L0 {os.tvboxnow.comOr just the weight of the water?
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Answer: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。/ j* K8 u/ O, G8 f! `1 K, ?
; r7 b0 P( T: Q J B8 y5 Ptvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! 公仔箱論壇- }. ^& I9 T4 R/ ]- |
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" \: C2 D2 @: W- M& x
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.公仔箱論壇& G4 t' l' c+ D( b/ N
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. 5 v% `, f" d* U5 v
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