本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 6 y: O1 K. z, i5 H g7 f
. a$ |, N( r: T" MIf you are not a Physics person, read on and learn a fact of physics. 9 o6 c' J- ]. h2 s `9 z P
AMAZING!
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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! tvb now,tvbnow,bttvb9 M4 U; ?- i" ~
This 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。* D9 t3 Z0 r3 n+ @* V9 U% v% d
It is located in the city of Magdeburg, near Berlin.
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9 p! t+ t& r4 i" h5.39.217.76The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb' x2 l& R; e( ?$ a) y* a V
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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: y2 K' C. U- B1 N) u, ?tvb now,tvbnow,bttvbQuestion:
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; E" E+ z6 i# I* N% q公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
6 o0 d* s8 J$ h) V公仔箱論壇Or just the weight of the water?
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Answer:
: Z [: f+ B2 b2 |7 Z+ h1 Y. N公仔箱論壇
: h. N6 K. x7 q. oIt only needs to be designed to withstand the weight of the water!
2 @% M" c& u2 ktvb now,tvbnow,bttvbWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded公仔箱論壇, F) e0 p* U6 i( Q5 b, E
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。4 {9 X* V" B0 z
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The Incredible Magdeburg Water Bridge in Germany
1 x" K' J+ ^9 [" i8 oTVBNOW 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 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。7 I: _# e" J$ O0 p0 p
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. 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。9 h* P* K, o" X% q8 b4 Q$ ^- V' v& L
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2 j/ H9 o" Y. }6 \6 ?0 G# Z4 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。tvb now,tvbnow,bttvb4 a5 \1 \ b0 {* } s" `
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。2 I: t6 |' Y3 \1 v0 H
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