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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.   4 F4 G" s: h. F  n$ |( E+ m( R. ?
AMAZING!

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, v# d! m) w$ L3 V0 U. D$ K3 c9 T% [Even after you see it, it is still hard to believe!
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6 O6 x8 B% X$ e  ]( b公仔箱論壇- a- ]+ O" e9 E! z
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% V. b* h( B/ k% {) ^: S
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* f$ q; y4 W. D, u, ~' |/ L! ], v& M
It is located in the city of Magdeburg, near Berlin.

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6 R: v! R$ m5 ]( T, t( }9 PThe photo was taken on the day of inauguration.
8 ]; y" {2 x- 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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& U: S, `& O6 v4 o: T) u8 `* S) A公仔箱論壇Question:

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9 X% V6 c  O+ G7 _6 z' h7 nDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,* z' i% i+ A% G: ~# G0 L+ L
Or just the weight of the water? tvb now,tvbnow,bttvb* X9 a' x3 C4 u; a; C) s$ c

6 m3 F" q$ ~0 _! U8 W" j7 J0 ~Answer:

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It only needs to be designed to withstand the weight of  the water! , b! @: g# O* z  m/ v9 H! K" I
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- t7 {+ y3 S& a9 @+ B. D9 R* Z
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. 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 r1 B( H9 L. K+ n( X/ `1 e6 P

2 Y+ F( K9 w, {) x% VConstruction 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。$ G% u( T& e$ \

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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
5 l' R* r7 S. _( D& b7 B! u0 `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。連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
6 R  V7 Y  g/ \* _tvb now,tvbnow,bttvb也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
9 J# o- f( x/ f$ r& N7 d公仔箱論壇隨後的冷戰時期,德國分裂,該專案被東德政府無限期地擱置下來。5.39.217.76' x( l0 p$ t3 f2 a
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。公仔箱論壇+ o# d; c$ C1 m4 [! M  t  e! G
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
4 V* [" w. A( f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。 9 o- \+ T/ H: ~$ w1 F
2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和公仔箱論壇+ w' x. Y: Z) K) R+ c' 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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  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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