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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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If you are not a Physics person, read on and learn a fact of physics.   
( M# S* y; H9 M! _2 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。AMAZING!

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Even after you see it, it is still hard to believe!

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( f7 @' U5 f. _1 Ltvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.76& ]0 W9 i5 E$ I. i/ P0 B6 ^
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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 Q3 b" v: z0 s' C! z5 g" E" p4 q$ S
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.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。: O  S/ ^1 n5 B/ p
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.8 [& \& r& k. T/ ?
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Question:

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. H  T, ^9 @6 {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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,+ X; U  B2 b( s. q6 p
Or just the weight of the water? 2 K# g* {3 g% G7 F4 R% H. Z  K+ B: k1 L

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It only needs to be designed to withstand the weight of  the water!
( |8 O8 l9 V- a, a7 h8 C5.39.217.76Why? 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" V/ v. F* o" N& ~5 d
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.5.39.217.765 O) r5 i: S7 L- W) x; H
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. " g# r) M' s! P  z

9 ]3 H) [8 U; H# {! Z: j2 S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。  l% F% B6 a  L. P: P+ l) P

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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
9 _" Y! `1 H6 `5 qtvb 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
9 }1 [0 O3 z2 o! f/ V1 b也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
  E9 T3 h4 ^: |8 i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。tvb now,tvbnow,bttvb  i1 `1 a1 m  b8 b2 J8 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。
* {$ m0 b  p3 u( P$ a5.39.217.76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 萬5.39.217.76+ w7 l- q! `8 T: p2 j
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。
$ L% w6 ~9 y6 X0 C+ ]1 F$ m2003 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 H1 U9 k" H, t2 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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  • k23bb

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