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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 tvb now,tvbnow,bttvb7 _4 W8 Q2 M" m0 a' `  D
公仔箱論壇* q) x& B8 ?" C$ |& i" F0 H+ R- s
If you are not a Physics person, read on and learn a fact of physics.   
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# f+ U1 a0 F" g9 m- QTVBNOW 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。公仔箱論壇% `) z. K4 [& ?/ d) f5 C
Even after you see it, it is still hard to believe!
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. u* p( y# U- J0 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。
5 p& N2 v5 M) R2 d3 R5.39.217.76Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
1 O3 @1 U/ t, f# g6 [% xThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb# \; [6 W: I! y' C
It is located in the city of Magdeburg, near Berlin.

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" o" U7 g4 N" D( m; XThe photo was taken on the day of inauguration.8 j) M" ]# a0 a) Q% S" L) q8 x
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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: V+ S+ T$ W4 k) R3 f/ P, X& t公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb( T/ T. I' S1 D0 ]2 R5 E
Or just the weight of the water?
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Answer:

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; d8 e" Q1 q- o8 ?2 Gtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of  the water!
8 r+ @) C6 V7 F0 L& e8 R5.39.217.76Why? 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 Germany5.39.217.76* V9 B6 R, T! ^: \: ?9 z4 [
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.
) A( N3 n) j0 c7 U' e6 N6 jTVBNOW 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 n' k0 }' @- O% M+ kTVBNOW 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。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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5.39.217.76- H9 N' X- x! g+ N/ k8 m) ]; L4 h

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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
' r. x) z  g: }3 J. L1 pTVBNOW 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
: I- t) w; ]; I& v2 E. M# M7 Y也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
% C5 {" ]; t# d; Y5.39.217.76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。5.39.217.761 b/ o0 f/ V1 R5 C0 u+ v/ F# q3 k3 r
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。
# D& v, E9 P! n+ |7 {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: K: Y" p& e2 |0 ?
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。 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。' u$ B' h* [. N+ C/ m4 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
, L1 T0 E$ B7 {公仔箱論壇易北河-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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