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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
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; ^4 l" Y. t% F  j# s; ?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。If you are not a Physics person, read on and learn a fact of physics.   : D: _+ F% G0 W% U1 [
AMAZING!

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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! 5.39.217.76$ T! R% {3 z9 U: D% J* f
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. $ g2 b$ t' S& k7 }
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
0 {  s. O4 \2 w+ HTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.  |# a- a1 ]' m2 W) G. p5 p
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Question:
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' D' W  r: ]! c8 {) Q9 TDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
/ ?# K! R( \/ J/ Dtvb now,tvbnow,bttvbOr just the weight of the water? 5 A" \& C" l# E* b: w( l. h
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。* I+ ~3 d  u+ r, z2 E  [
Answer:
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9 y# f+ m9 q9 [1 D5.39.217.76It only needs to be designed to withstand the weight of  the water!
4 a! c& L: r) ]& R7 {: x" [1 Xtvb now,tvbnow,bttvbWhy? 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
0 J/ v1 a7 C# N8 o/ YThe 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。! {' k2 g0 s9 I1 G+ j* V
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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* Q+ a. e7 ?( q- t* ~: k1 k8 p公仔箱論壇公仔箱論壇. O6 t, X0 X' v1 P0 G
公仔箱論壇8 R: j7 w" x: W( j5 Y9 A& @# s

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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
5 a4 P' F* m: ]0 Mtvb now,tvbnow,bttvb連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇5 l& L+ l% }) A; ?& V
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
, B( m. C( {5 R3 e0 o, Ctvb now,tvbnow,bttvb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。
  e3 f5 `- O2 N( o5 L* Q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。5.39.217.766 B9 H4 g; K/ c9 O; f, I
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
  i. F. z) y& u0 o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。
2 ]# W4 V( H' k1 j- ~& \" s2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和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。9 @/ I4 I! g0 D! a, G6 V5 v
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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