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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 & D/ _# @  q8 U5 [
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If you are not a Physics person, read on and learn a fact of physics.   9 a- T& C2 k  w+ t  H0 C. {! O
AMAZING!
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* X+ e* s2 G  E7 u  AEven after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇4 B0 W$ r3 O1 y7 f' g4 |
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
  W6 y% ]% i- m0 K# k, _It is located in the city of Magdeburg, near Berlin.

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  ^, h# a* c6 w( S6 _The photo was taken on the day of inauguration.
& \, ]  k+ U- r* B) u) a公仔箱論壇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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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,+ ^) e; V0 F) E- L0 b9 z5 l6 x- f
Or just the weight of the water? tvb now,tvbnow,bttvb; U5 o7 M7 s: c% W

- o- L) h4 H5 V5.39.217.76Answer:

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- @+ f4 Z7 ?; h% h& I1 c+ }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' m8 W! N4 J+ w0 h% O+ f& h
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 GermanyTVBNOW 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。/ G; S$ P! R+ X" R" O- n
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. 公仔箱論壇9 O! _* G$ y( x3 ?9 O5 U

1 e+ U! f9 v7 @( }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。, ^& W1 q- j8 L8 W5 h& B6 W) Z
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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: {5 I- u5 B6 R2 M% p
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇5.39.217.76' g- V: V( |- K% w1 n3 @
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+ y7 a4 i7 y: }4 o( _; p( 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。
  d6 e1 E: `; d9 @/ ~, ^+ p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。7 {3 P( _- U: P9 A* ?/ s* `
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
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' h( O* b2 O. ~0 w0 |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。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7 Y" [- @9 Z3 g* q+ c% `
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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