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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 5.39.217.76+ I! l9 N1 g3 C; o0 s
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If you are not a Physics person, read on and learn a fact of physics.   
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1 m# G! X6 h! S4 f( d0 LTVBNOW 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。- \; Q* x, l, @
Even after you see it, it is still hard to believe!
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) {  x+ \( S6 ^/ H
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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/ h  `( i2 d2 K1 L
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. % Y& ?* p" |3 v5 a% X! C9 y
It is located in the city of Magdeburg, near Berlin.

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# v( H" I9 x+ h8 o9 J$ r2 nThe photo was taken on the day of inauguration.
- Q! W* _- \3 O5 L$ i5 B, @2 o; Rtvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。, v! p6 g$ R) u8 s$ ?

2 \9 C% l9 n/ z  }4 CQuestion:

/ E: Q( _+ W2 {" R/ l8 ctvb now,tvbnow,bttvbTVBNOW 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。  b( K) J$ [+ W: A! K0 f
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,6 O! Y7 |" q& R/ E
Or just the weight of the water?
+ u3 A/ `8 |7 ATVBNOW 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。% S$ f4 i# ?- s7 }6 y4 z4 _. D7 i
Answer:
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- K- z* S9 Z9 w1 ^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。It only needs to be designed to withstand the weight of  the water! 5.39.217.76, H" m0 ]3 z5 W0 g8 v
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
2 U7 H! ^( D" Q9 K' ~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。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.
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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.
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 ?* B: \' c3 K9 K" |2 U

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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
: w2 ^' L$ B: _4 _# c9 Ptvb now,tvbnow,bttvb連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇公仔箱論壇# d: V$ E3 G# O
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
, m# S7 `5 ^6 H+ K9 R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$ s4 w9 |1 I/ ]- \* V2 D
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。5.39.217.76# o3 g8 M  y  B/ m2 o
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- j  C- u! v  C2 z, I
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。 公仔箱論壇) p4 ~7 r- e6 X2 ?* p+ V( e0 \$ s
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 j6 x# y  L+ k4 O
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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