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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.   / t# e5 S+ T, y8 A4 T" N5 U$ K6 v
AMAZING!
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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! 公仔箱論壇: E0 y. w5 n: _( d8 o
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ; a, v3 |+ X( M3 l
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration./ s$ i, |% g; r. ]
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。  M+ z4 q$ }# g+ P! w2 ?

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, R) ]1 c1 j( ]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。
" X$ v9 E) u& A5 _5 W5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
- \$ s7 w/ l% {! v3 ITVBNOW 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。Or just the weight of the water? , Z, }- \7 H5 e" u9 C- G$ V1 M

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It only needs to be designed to withstand the weight of  the water! 公仔箱論壇2 S6 x% r4 I( V# i: a% h
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 Germanytvb now,tvbnow,bttvb2 p. R3 B* }6 @# x4 c
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.公仔箱論壇& q: A( Z5 V; c9 ], f
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" R$ X; q% Z9 m0 m) M  d# k+ H
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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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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
& L4 X% N8 Y' V/ }, \連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
# S+ O- G# S2 Y, v+ ]& itvb 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。
' p+ }! I9 W1 p0 v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。公仔箱論壇4 ?7 B( m$ N( l# J' K8 Z. h4 M$ Y
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。tvb now,tvbnow,bttvb' _0 t! {& |: \4 R8 d( q6 X1 M
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
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5 T, z- @; ^! P% ^5.39.217.762003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和& ~% W0 W' y6 U/ [) U! d* _! h
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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