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EVER SEEN A RIVER OVER A RIVER?

本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 2 Z7 T( R# V- _5 W# V/ g& }
公仔箱論壇  i1 K% ^3 g8 T' r- l/ F) ^
If you are not a Physics person, read on and learn a fact of physics.   公仔箱論壇& Q1 Y3 L$ V: a) p& ]0 Y9 ?
AMAZING!
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。: }3 K* ]* H- }4 w2 M0 ^6 w3 ~
5.39.217.76: x1 O% H8 f  B2 u3 S+ w. i1 ~% o6 o
Even after you see it, it is still hard to believe!
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$ E4 ~, Y% ^; @. L' z5.39.217.76Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
/ z7 ]! F: T. F! k$ L: kThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 0 U% W- Z! Q* h) R) l
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.公仔箱論壇" h" }2 o1 X# J" O6 N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇8 _3 C' K( U! B" R/ b9 C# l9 C, H2 `
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Question:
5.39.217.76$ a6 @% K: c- z+ ?. o
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。$ e0 f, [# h5 Q/ }* r! o: E: g
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇+ C/ E: B" o5 a/ L
Or just the weight of the water? 1 p2 Z. z, c& u3 y  V' _# t3 a

8 T7 e- ^% J4 c7 a公仔箱論壇Answer:
tvb now,tvbnow,bttvb8 |0 ^( F. l: i  j7 _9 J/ H( M

: d6 w9 d9 O( B5 h4 gIt only needs to be designed to withstand the weight of  the water!
5 l) n  {  W) Z: dTVBNOW 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。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
% m7 f  d7 F; j% U; o8 ~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.& ?4 b) ]5 Q  C" w; T  ^6 I* s, 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. " H+ D1 @' E; I- L2 O! y

* ]6 F! k4 O5 @5 c# v$ _1 a公仔箱論壇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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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。; w) @2 j( A1 \/ A8 z% L
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平壤核子能源研究所
這宏偉壯觀、傲視寰宇的工程傑作早在 1919 年工程師們即已提出4 o6 F  k+ J# t! V7 n- ?
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇公仔箱論壇* j$ L, h) F  N1 ^9 F7 A
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
3 G9 o* e5 |2 \2 j4 r隨後的冷戰時期,德國分裂,該專案被東德政府無限期地擱置下來。
. j" Z, ~) V' N  z% C. o德國重新統一後,隨著道路交通重大工程規劃的編制,水橋再次成為一個優先專案。
8 l- l! ~  q. i公仔箱論壇於1997年開始建造,經過 6 年,耗資 5 億歐元,2.4 萬噸鋼材和 6.8 萬
% {/ R/ Y0 X% f+ c; \9 ~4 P公仔箱論壇立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。
/ y* z! R! r6 b4 `+ Z. ATVBNOW 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。2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和$ @& c7 p# w0 s: p, B7 X6 l
易北河-哈威爾運河之間運行的船舶不得不繞道 12 公里通過。
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  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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