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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 公仔箱論壇7 b  T3 [( v2 P

" H) u. L0 G, n. D4 P. s( q: k公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.   
6 Y! G% ?7 O. L' ~- E3 r2 r公仔箱論壇AMAZING!

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% W6 L- [! L: c0 n5 F. f2 m: P" Kos.tvboxnow.comEven after you see it, it is still hard to believe!

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# a; O! ~4 g6 J; n( X! ^0 z6 ]9 A3 \Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 8 y0 p  w3 k% U0 C5 `
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( d, y- T4 i% ?( D. @5 u( ETVBNOW 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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# O/ s& U" u3 c# ?公仔箱論壇The photo was taken on the day of inauguration.; J; {8 v+ V) d0 ?
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇0 O% Y! X& x* @- m" I; Y

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb7 b2 |, w, C9 x3 O" r
Or just the weight of the water? tvb now,tvbnow,bttvb# j. U6 c1 x# r  h4 O( g# B$ h: j1 M7 F$ U
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Answer:

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; |" h' }7 G7 T  e# w) k公仔箱論壇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。! i! g3 ~$ z  j5 i6 b! v
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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公仔箱論壇2 ]# D0 z( v- h: {/ \& W2 o
The Incredible Magdeburg Water Bridge in Germany
9 l' Y1 l  Q/ y4 O1 F, V  T公仔箱論壇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 }4 }& u& n& ~* Y( [
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.
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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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# O( n3 H# \) j' xTVBNOW 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。% V  ?$ a8 g( [- |1 A5 {

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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
# E* |# I+ K- B9 c* l" W連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
; h; x9 N  d! n$ V: q3 X* ?! `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。也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
- h  u8 o+ {$ l; v$ nTVBNOW 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。
. q( X6 t! O$ e& `4 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。
3 X' X: Q0 w0 _: y9 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。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
( F- Q$ d% I* L; U5 e, h, a5 `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。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。 公仔箱論壇) b/ Q6 q5 r. Z; ~1 \
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% [. R' \" `! P2 P
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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