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 U3 K0 o c/ t+ o& U0 w公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇4 x& L% x3 }0 k' q& [( E9 G
It is located in the city of Magdeburg, near Berlin.
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$ X: T& g& F, Dtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.( |% u$ |: o# L& z, J
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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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 L" M" q2 v) A. `9 |7 T6 t) S
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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3 Q9 f: I7 v" B! 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。
8 {2 B) @+ i1 C- o0 |- bTVBNOW 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。It only needs to be designed to withstand the weight of the water!
" \9 U$ b% K2 V& f5.39.217.77:8898Why? 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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% R K$ p C; n2 _0 s+ v CTVBNOW 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。5.39.217.77:8898& M- j1 o. ^: D1 \* r7 k+ _
The Incredible Magdeburg Water Bridge in Germany
0 T) k! E1 p# b4 v& @- w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.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。+ Z) ^1 I7 P- j: r' \2 k* e
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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# G& s& X4 \8 z; H" K( |" 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。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. 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。' F, D+ I; R5 @; _
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9 ?* e+ Y+ G1 l2 m: v5 C8 BTVBNOW 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。5.39.217.77:8898: y& d; ] {6 ?0 X6 F' E# o, f
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