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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,bttvb6 o7 s& A1 y/ R0 a
AMAZING!
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Even after you see it, it is still hard to believe!
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6 d& ~% K" U" Z+ ]1 c7 L5.39.217.76Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.764 s9 X' I: p/ a
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
' {, Y: B; K  HIt is located in the city of Magdeburg, near Berlin.
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公仔箱論壇) s1 t( g% x: R9 E  O
The photo was taken on the day of inauguration.
8 g5 Y3 L+ s3 k; l! v- D5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.7 ?$ u7 `$ ?+ \4 Y- [

! d" S% U8 e/ CQuestion:
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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" T; `" k- |8 b7 s, j
Or just the weight of the water?
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Answer:
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It only needs to be designed to withstand the weight of  the water! 6 [8 b. a9 u+ Q0 W' c
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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公仔箱論壇3 X, U. L' j& P' G- X* E
The Incredible Magdeburg Water Bridge in Germany
! ~6 J; B8 |: }5 utvb 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.公仔箱論壇* {( b# y) ]; |) {" m5 s
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公仔箱論壇+ C: {" L9 n/ k6 K5 k& A4 _5 b
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
3 _0 x* h, Z. U( [1 n+ z: Xtvb now,tvbnow,bttvb也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。! O1 p+ N. s% ^. }7 R$ N2 V
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。. ]0 r( p# C; I: g  s+ K0 g
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。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。% @8 l: H" ?7 M5 m" R4 o; ]) Y: o& x: e
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
; R" V4 }( W$ O9 ~* J5.39.217.76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。
5 s# V( c  j& N1 c$ [tvb now,tvbnow,bttvb2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
* _' Z6 O( ?2 L公仔箱論壇易北河-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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