本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb1 @0 t( h; S+ u! X6 {3 |2 O
! }$ f' A8 |% {% Y7 o0 N0 v; FIf you are not a Physics person, read on and learn a fact of physics. tvb now,tvbnow,bttvb/ N& K+ o5 Y4 O% A4 i, t8 l# `
AMAZING!
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3 g* N2 i9 B4 `' S公仔箱論壇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! 7 ^( O! S1 W( v/ f
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( ~) n3 `, Q; T: J+ Z }( _/ n
It is located in the city of Magdeburg, near Berlin.
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7 D7 N8 Q$ A6 x- g1 f) [tvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.5.39.217.77:88987 T" r8 c- q" T* d8 ?8 V9 M) q" I
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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 o' u6 @4 O# @4 q
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Question:
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* Z/ @7 X) N 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。# u. E- {) L8 w3 I. H# l0 Y; Y! f
Or just the weight of the water?
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Answer:公仔箱論壇5 P$ v4 e8 x' ^! c% I; L8 t; x0 T
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It only needs to be designed to withstand the weight of the water! s, a+ ]! S4 ~
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded2 o3 m" D! K+ j
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% N s1 X& i0 s6 L4 U公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
& f' l, O' S4 x( m# Q/ A2 ~0 e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.
. I. m8 P7 F/ t% R" K9 |) y/ J( {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。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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