本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 * U7 ?& V3 I5 e
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If you are not a Physics person, read on and learn a fact of physics. 5.39.217.763 S6 a$ y- O$ F/ @$ w
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 |9 e! j( R( Y* b% E- Z
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。2 S8 k4 a/ t, s0 ^& g- Z& y
It is located in the city of Magdeburg, near Berlin.8 v# a% j% U0 t
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。1 V1 o* G; q# G% z# u* K& t
The photo was taken on the day of inauguration.
: x8 k' P1 ~2 e3 Y( ]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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76! z# M# ?$ A; C8 R) p7 q
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76 y$ ~4 ? {: O1 g" ?
Or just the weight of the water?
3 Z0 r" z% L% zTVBNOW 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。$ R5 T1 H* `6 M3 \7 d
Answer:
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It only needs to be designed to withstand the weight of the water! 公仔箱論壇# V3 x( R% L* O( e
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
! z6 t# @2 x/ o6 J( C9 [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& ^% L8 R6 d9 H) ]6 T: m4 r" t, S
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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3 @8 I! w: d3 \3 z& L8 ztvb now,tvbnow,bttvb5.39.217.764 G$ C: v2 S! x6 V6 i9 j( y
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7 v+ r9 c, H/ z5 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。公仔箱論壇. f( ]3 \6 N9 [5 x4 y( N& d
8 b2 R7 v" r! v& v% W+ mTVBNOW 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。 |
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