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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.   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。# L: o2 f( Y7 N
AMAZING!

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Even after you see it, it is still hard to believe!
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6 u3 q5 a9 M2 k3 f/ ~0 r# a0 n$ e, A公仔箱論壇Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
% X7 U  b0 }" F  W  _tvb 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.
3 v9 [! @2 M! K5 j9 H# g9 EIt is located in the city of Magdeburg, near Berlin.

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! ?0 \  L" t* `3 \5.39.217.77:8898The photo was taken on the day of inauguration.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 {9 s; m* Y& t! k0 Q. N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:

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4 k' c3 Q  x: P3 pTVBNOW 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 W, H( r& `& [0 d1 Y  W: Dtvb now,tvbnow,bttvbOr just the weight of the water? 5.39.217.77:8898' L% H, s$ f/ z: E2 |

3 N4 o' L* N( `3 n5 q6 rAnswer:

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: T! O7 `- _5 B  CIt only needs to be designed to withstand the weight of  the water!
! r: D% R/ W9 GWhy? 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
7 f% @& s% q- x/ D  mThe 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., k( z& }/ E0 V3 E1 D
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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5 U# d/ ]4 h, ~$ S) F* x+ M- W( 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。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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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。" `% K& U0 q' Q" V1 G' i  a

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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
9 S1 z6 y% A, k- T- Z+ N3 ~( }5.39.217.77:8898連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
( T4 e) d0 x# D也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
- [$ S! t( @7 Q9 y' 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。
+ e- a7 l3 y! m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。
1 d! @8 U8 g# z: h6 o+ Z  ~tvb now,tvbnow,bttvb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
# _! K) F" N0 N' H4 A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。
3 ]8 `- T: N+ f2 l4 H2 M) j5.39.217.77:88982003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
+ D; D: t" N9 b0 H6 Ktvb now,tvbnow,bttvb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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