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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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% `; t3 Q2 F& P6 @. d公仔箱論壇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。9 b% y( |$ O" f8 Z
AMAZING!

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Even after you see it, it is still hard to believe!
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, x3 X: [' t% Q2 t/ btvb now,tvbnow,bttvbTVBNOW 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。+ F! R( p) b  H6 L2 k5 g
Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
, W2 I; a! Y+ q# ~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.
2 t2 }0 v0 f3 h! FTVBNOW 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 is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.5.39.217.76( x+ O9 C5 i1 T, Y3 O& ~
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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: @! A/ M: o7 }9 dQuestion:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
  R% |' A" j8 G  ^- m9 \) K: I$ @% Z/ UOr just the weight of the water? ) N4 K+ T5 p- v- L/ N8 B! a/ d2 \# z
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Answer:

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It only needs to be designed to withstand the weight of  the water!
4 u' v8 F" \' w# _' i/ l3 w! b. Ptvb now,tvbnow,bttvbWhy? 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4 v  Q6 m. ^8 I. N
The Incredible Magdeburg Water Bridge in Germany- Q9 j# n, w2 [& o" K0 A
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.5.39.217.76* x' ^6 Z+ `* q+ [% g6 ]
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. tvb now,tvbnow,bttvb+ q* _% i1 M0 {+ M

+ ~$ Z" o+ }) e  [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
  o6 h& C# q8 R: |8 Atvb now,tvbnow,bttvb連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇% i: t/ ^; W& x; \9 F: f6 M
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
; ~: u: J# o3 q% @- g5 O: ~5.39.217.76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。! X; `; d! N# O( t- 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。
9 ~0 p, y/ |/ f  hTVBNOW 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。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
$ C9 o* y7 \  t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。 tvb now,tvbnow,bttvb9 B  {8 U8 a$ J" C( c
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tvb now,tvbnow,bttvb2 i; Z+ h# \8 }! m
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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