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標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁]

作者: lilitan008    時間: 2011-10-2 10:09 PM     標題: EVER SEEN A RIVER OVER A RIVER?

本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.   
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5 f! b" ?. Y$ _7 J  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! tvb now,tvbnow,bttvb/ A- ]! |* r, [
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
/ k' n0 i! d8 }1 n" I. Y5.39.217.77:8898It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
  R: t4 r7 I- y3 h* u2 Z3 _To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.77:88983 |, S8 c* I& S8 c) G3 H& f
Or just the weight of the water?
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( E: }9 t' q9 \! vAnswer:
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It only needs to be designed to withstand the weight of  the water!
7 Y) Q7 S  w& ]5 e) l8 j& p' n0 IWhy? 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,bttvb, z5 m! L+ S2 y  |, Q. P
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。# k6 |; B9 e- `: f
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. # {' P* j3 W  t3 d! L" W* g/ ?

" E: g2 g9 ?6 t# LTVBNOW 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。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。6 V7 l% ^1 N/ c2 P3 F' X5 h
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[attach]1486503[/attach]
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作者: busyfun    時間: 2011-10-4 11:33 AM

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  U4 {/ u* O  f& H1 o5 I2 ]; @
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
% p# h: Y/ s2 L$ s- ~/ U也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
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" m) h; V# `4 y( l2 w$ S2 Itvb now,tvbnow,bttvb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。tvb now,tvbnow,bttvb, ]" M7 @5 h6 W3 N& Z) m
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 {$ i2 _- l
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% ^' \1 s- t# w" Y; }/ o6 z8 f公仔箱論壇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1 N' X6 ]. {$ ]6 m
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。
作者: swyip21    時間: 2011-10-7 10:19 AM

多谢您的分享!
作者: Mimisan    時間: 2011-10-12 11:01 AM

first time heard & saw it, thanks for sharing, thanks tvboxnow!!
作者: pepperjellabies    時間: 2011-10-15 09:35 PM

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