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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 6 L" T/ D; s% o. A4 z* S% t# ]& S
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If you are not a Physics person, read on and learn a fact of physics.   5.39.217.760 F) R# I. l: L3 h7 b
AMAZING!
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Even 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! tvb now,tvbnow,bttvb7 Z- |0 b* a# G. V/ Q4 U
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. % X. O% B2 Y8 U) m. f( t. p
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.公仔箱論壇) [1 ?) @* y0 \, o% g9 P4 y1 D
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb- _; S* g! D2 r) i+ X' e  I4 c- ?. z
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Question:
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' a+ V9 x( N+ e5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,, z9 a% k+ m0 h: w, s7 K" ^* a
Or just the weight of the water? 5.39.217.761 I; R" z* I) e2 X: _1 Z  D$ O  p# \
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Answer:

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It only needs to be designed to withstand the weight of  the water! 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 Z: o9 j' H  p
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 Germany
5 d9 z2 V4 g) i0 ITVBNOW 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。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。+ d# k' J! u9 y1 D- o4 t: n
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 ^# X* x7 a: B& B
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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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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。1 V1 |  Z4 d. R! x) j: o) a/ G

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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。. f4 {9 y' }: T/ M+ f

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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
+ n, \; z( [! {! h  }4 d連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
) {( e) n: D) b/ |( F6 q5.39.217.76也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
# Y1 z' d0 n5 n/ X8 m6 ~, ?0 Z, B! 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。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。
  U: C' |& B7 h3 Q/ p- _' V3 v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。: G) e) P# H# 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 萬公仔箱論壇  t2 }0 \# c4 @: z# 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。 5.39.217.76$ o. j. j& ^) |6 o8 c, T. S- B; B
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
1 ]1 }! v" }  W! C8 |6 {0 m4 _' {$ b1 o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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