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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 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。' o6 a; Z. N5 x2 T6 D2 Z( ~

+ `7 X3 D; _3 c: M& Btvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.   
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$ I2 v1 G9 e3 Y8 b4 U5.39.217.76Even 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! 公仔箱論壇9 f7 N/ R4 _( ~4 n
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6 b! t: {# X5 Z& ?
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
6 k  K2 s" V, ]! o# d& M6 sTVBNOW 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.
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Question:

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; z. \5 D1 `* j9 l: x- {tvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76* p1 I! |( a7 h
Or just the weight of the water? 公仔箱論壇. q( c* ?8 N$ n% V
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Answer:

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" z+ ^. r. Y' d6 C# h5.39.217.76It only needs to be designed to withstand the weight of  the water!
" Y: o  N+ x5 w$ Q4 g公仔箱論壇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 Germanytvb now,tvbnow,bttvb5 N4 z7 s' m+ t% A+ I
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.* E- Q4 P, S+ J7 O0 ?' G
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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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' D4 O2 z5 q9 V- G" y# P5 ]/ O
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇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 v9 |" P& o3 D" t+ N1 s
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
5 O7 m7 D% R# D1 ^# A9 u& T+ o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。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。6 T5 ]( L7 C4 j' M' L! t
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。
& Q# t+ \1 G: W  FTVBNOW 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。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 萬8 R0 M" T8 `, W" A9 G
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。 # @$ J! [* z. C4 j0 k0 E: |' z
2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和公仔箱論壇. C& n# c- s% O1 v5 ^- a2 T$ x
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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多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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