EVER SEEN A RIVER OVER A RIVER?

lilitan008

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If you are not a Physics person, read on and learn a fact of physics.   
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Even after you see it, it is still hard to believe!5.39.217.769 k8 R* `: @4 X( n2 l* O9 Q
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 D  V) H( _+ X/ ~+ T
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Magdeburg Water Bridge in Germany  What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
% a1 @- G5 Z) r! z3 G: Z, vtvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.766 J4 N$ X9 Z! o7 n& y
It is located in the city of Magdeburg, near Berlin.% |8 h4 Q0 N% [  B7 p

/ y3 ?! @$ U" T: P6 B: p5.39.217.76The photo was taken on the day of inauguration.公仔箱論壇6 T* O% {4 G; p6 B! K) g
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:公仔箱論壇/ W/ d- i4 |3 @% h6 W+ Q
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
+ p! W9 m5 A$ k( L0 J, b1 w9 QOr just the weight of the water? 公仔箱論壇  R3 a! Y1 x* l

; L$ H2 u1 y+ A( Q5.39.217.76Answer:
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It 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。5 g2 M  f2 \* ^8 D
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
- K7 t) `* D# w! _tvb now,tvbnow,bttvbThe 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.
  g4 @5 O6 g/ j1 F( r  sThe 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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# Y% x! [; a; F' S. b, v  YConstruction 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. 公仔箱論壇+ R2 b# b0 Q  m6 K, p2 }( P
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busyfun

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5.39.217.76# l. Y; n' G+ m2 y
連通兩條水道的最初構思，而羅騰湖 Rothensee 升船機及大橋錨碇
1 S2 A& A7 {$ C& ]) V也於 1938 年安裝就位，但在二次大戰期間，建設工程被推遲。tvb now,tvbnow,bttvb% N% @% L! g: ^
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。公仔箱論壇, f2 ]: t8 _5 N6 q/ s1 h+ a
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。
; S* [+ Y9 E. J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
7 E3 u) E; t# \& v, \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。 tvb now,tvbnow,bttvb2 U6 @% r. R$ K1 i& m) b/ H; F" c
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tvb now,tvbnow,bttvb- B  d- P9 u: r) J7 u; a  K
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。

swyip21

多谢您的分享！

Mimisan

first time heard & saw it, thanks for sharing, thanks tvboxnow!!