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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 7 t  H5 E8 {  @+ Q: Y: F* t& |

5 u, E# n' [. R+ A# y: f* PIf you are not a Physics person, read on and learn a fact of physics.   tvb now,tvbnow,bttvb5 E! c/ ^2 m+ r+ b
AMAZING!

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: ^. j5 W# u4 S$ @1 b, ^8 U公仔箱論壇Even after you see it, it is still hard to believe!

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! ^% c1 {3 P1 h# o/ F5.39.217.76Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb( ?! X+ y, ^8 z1 E3 v) n# |2 X9 x
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 _6 d; r! e6 b. v8 w) aIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
/ X! y% i/ `9 t0 w; ^$ H5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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8 }- ~. U" Y5 g9 dQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
& p* ~. E/ X2 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。Or just the weight of the water?
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Answer:

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2 t( l( |0 T  J. B# P1 l% 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。It only needs to be designed to withstand the weight of  the water!
' C: M5 e4 {9 m# WTVBNOW 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$ M9 v) H. i- N# K4 N8 x
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.tvb now,tvbnow,bttvb0 z  h# x( p* K, b$ z
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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- ~* O) Q/ N+ t( Jtvb now,tvbnow,bttvbConstruction 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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; Y) Z1 R* I5 n- h* w* G5.39.217.76公仔箱論壇* R) d" N: z" [

9 T( S& F2 Q8 S: gTVBNOW 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。5.39.217.76' k: P7 i  |5 i7 s: W
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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% g" v( z1 G- a+ [3 q# N7 F4 J. t1 B
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
& `, C5 m* n0 H4 ]8 L+ ?$ h公仔箱論壇也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
9 A3 ^1 z" s8 d/ M1 O2 x1 Q5.39.217.76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。2 q* o: R, Q- D, s" u* y, c& v
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。
& ^5 }2 o+ q3 a( U9 z/ z  W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
  ^, ?' P) n4 v- E( i/ @; @: V5.39.217.76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。
5 K) h4 a" X9 `5.39.217.762003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和9 r& ^$ ?" Z, v0 E/ ?/ }
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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