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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 tvb now,tvbnow,bttvb; @) b5 P( u6 s: F/ J

# e+ F& p& B. g) _; T4 Stvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.   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。4 z# v2 |8 G4 f. [
AMAZING!

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

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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。. @2 _$ F: }$ N$ n% |
Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 2 o: f9 ~; y3 n; C7 t. p# l
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
. h3 u) U$ `/ C* t, M; {: X; P6 h7 E+ xIt is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
5 C. i, ^# M' l) D$ c8 J" Y$ H' `To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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3 M" q: W0 |! B' ~/ H6 V公仔箱論壇Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,/ |% J, s$ n3 g& [
Or just the weight of the water?
+ M# P( F$ Q! e" H+ P& [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。
3 p9 y' ]2 A1 f7 w, MTVBNOW 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。Answer:

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It only needs to be designed to withstand the weight of  the water! 5.39.217.764 G4 o' E! X8 Q. M: s
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 Germanytvb now,tvbnow,bttvb9 B3 H9 z  Q$ |: Y
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.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。: J( _+ I0 O- O& y: c9 T+ i
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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$ A+ k; ?7 Y- O: p$ A: m7 Mtvb now,tvbnow,bttvbConstruction 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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. X1 `) Q- f( v+ j. OTVBNOW 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。tvb now,tvbnow,bttvb9 Y4 e2 K& ]6 \7 o! d& n5 }

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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公仔箱論壇9 i0 S5 q1 [! ^1 X$ R
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3 o2 w5 t" r$ c# Y# `) H
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
7 ~7 d% p$ T- R! }9 U# F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。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。6 ]5 }9 y, q& S
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$ z9 l( J; g3 l; F' J7 C
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。* c' W1 `: ^' b6 K1 p8 O
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。
- `& `& r2 m8 |4 V, |  b4 P5 C$ w2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
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多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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