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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.   tvb now,tvbnow,bttvb0 `. E& o) [& R
AMAZING!

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

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8 s% ^( b: ~& C& l4 K7 V% Q! VMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! % \1 C9 q& b( n/ N' Z
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
2 M( V% c( e6 c0 ~: S7 H9 x- BIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.公仔箱論壇3 {! [5 x0 @  ?% G
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇0 q$ _! |; n; P+ l% u% k

6 [. I7 |) U' i( k4 rtvb now,tvbnow,bttvbQuestion:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb, q* q* c9 z2 Z  B- Z$ n0 M
Or just the weight of the water? 公仔箱論壇6 F! c; Y8 \* Q
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Answer:

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! ~$ o* y. W$ L8 L' Y9 }; M* Q5.39.217.76It only needs to be designed to withstand the weight of  the water! 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。: r) o& P0 E/ g% Y
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( l4 V; d) a. }, q& w
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." @) h6 L" K, L) e) ^5 ^# _/ \9 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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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
, F1 U+ f# l0 k& V3 C; J" S連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
8 X2 ^$ ?$ c6 g, X2 @, f也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
7 `' T- [) L- v& {+ I) y$ B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。! ~, q2 V. P# `  ]1 |4 ?6 ^- [' n
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。$ K( o) H$ d* P; T/ I5 f
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
3 D( _8 l8 b0 S" I# w8 B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。
7 M) n' O! b) ]9 f) d4 F$ x0 w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
2 }1 R5 V" J4 p6 n0 ~. {  R: t8 j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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