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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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7 r, i" D* V2 W8 ]3 h( }& B8 _4 S, j5.39.217.76If 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。* R) i' l# U* g! v# }/ r
AMAZING!
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( @3 I0 Q; k2 V% I/ @' B公仔箱論壇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!
' u# b2 x& [: w8 @2 t* q0 q3 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。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: e$ I  L; ~# V# @
It is located in the city of Magdeburg, near Berlin.
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4 |# x8 o- H$ {: y2 w6 ^: m( I& U# 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。The photo was taken on the day of inauguration./ F$ P$ y; r+ f
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。0 z$ Z1 g8 f) m; ?, R" X

3 y) E$ q9 Y4 a3 aQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
  L1 W  c6 n1 X# Btvb now,tvbnow,bttvbOr just the weight of the water?
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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。6 I# [0 S3 ~, z
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。" T8 C7 u/ j+ ]8 x( A- r8 M: Q- ~
It only needs to be designed to withstand the weight of  the water! % P: l, _% K8 K) v- k8 n
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
3 _0 L# s! r5 {  C5 btvb now,tvbnow,bttvbThe 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.
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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。( R( W# B9 I# T$ C
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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2 \# L! I! A# d& I3 R
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
% Y% ~" J. q6 X" T5.39.217.76也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。- V+ Z: `4 w- ~+ r
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 }  ]" h  B0 f7 o) A, n' 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。
. }5 G, i0 h% k3 ]3 b; c# b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
% M$ o; H3 n$ |3 g6 K. ?tvb now,tvbnow,bttvb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5 [5 D1 u1 u* V  ?( @8 N4 O5 U
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
" o. J, v3 J; a! _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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