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標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁]

作者: lilitan008    時間: 2011-10-2 10:09 PM     標題: 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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$ Q% J# ~, T, M  i& L3 ^5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.   
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Even after you see it, it is still hard to believe!
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[attach]1486499[/attach]
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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
/ [# [+ Q& M- _3 x公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇  n3 _8 P5 F+ W: U
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
# }, j7 g8 n. q- Y! ~# uTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:88985 p) z; T; @' c- `6 n" n2 h( P
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Question:
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。+ H7 Z. V: M9 Y% e

" `2 F# C, q! Gtvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
% R3 `0 A) X, K$ gtvb now,tvbnow,bttvbOr just the weight of the water?
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# i) R# y8 u8 j# `& K6 y4 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。Answer:

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8 \+ X3 M$ b5 Q) ?, o3 ^+ \公仔箱論壇It only needs to be designed to withstand the weight of  the water!
$ x$ S1 E4 }: G0 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。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

% u5 X) @+ H2 l' BTVBNOW 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。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 G8 N+ @6 c$ M+ M5 L9 z& I* W
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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。: M( s$ g! C* i6 J# I' I
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. : x- u/ N# _; F" L' u
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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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公仔箱論壇" n& ?  s# M$ Y6 V: `% ]& X
[attach]1486500[/attach]公仔箱論壇4 O( J; ?2 H- V2 V$ y
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[attach]1486502[/attach]
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作者: busyfun    時間: 2011-10-4 11:33 AM

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5 [6 K' G( ?& l7 ]: Q# Z# W. G
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇# j! ]  q( N/ V4 g: |/ |3 Q( v
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
! y  @6 f9 l1 I+ f7 X5.39.217.77:8898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。9 ~$ c) E& M* {% H) q) c- z7 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。
2 S9 A7 J( y0 Q* b, i+ @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
- u& U' `/ q7 |1 X8 X公仔箱論壇立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。
! b! Z. [* y: t' G$ C2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和* S; T) K0 G  y/ q1 l+ x
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。
作者: swyip21    時間: 2011-10-7 10:19 AM

多谢您的分享!
作者: Mimisan    時間: 2011-10-12 11:01 AM

first time heard & saw it, thanks for sharing, thanks tvboxnow!!
作者: pepperjellabies    時間: 2011-10-15 09:35 PM

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