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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,bttvb8 D1 t2 D; U; s3 @

8 U# P5 l1 Q$ D7 u$ V# 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。If you are not a Physics person, read on and learn a fact of physics.   
) M2 t+ c7 @4 ]% R7 rTVBNOW 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。AMAZING!

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Even after you see it, it is still hard to believe!
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0 C6 r3 G; k* P, YMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
) P% x- X) K" y* q  G, Z+ \" Btvb now,tvbnow,bttvbThis 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$ N9 T6 o9 g& X. q% H
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
* i/ d# @" ^5 {: w; y4 F7 i公仔箱論壇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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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
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4 g+ r0 `% `. Q! z5.39.217.76Answer:
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- ~- G" A+ M& \. MTVBNOW 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 only needs to be designed to withstand the weight of  the water!
0 {) H" a8 J  z3 ]; O5.39.217.76Why? 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 Germany9 J" @7 P) L9 T( \6 B
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.
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# _, p3 C( |( u- `( X, BConstruction 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
! L( A+ l* W- Z" P連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇公仔箱論壇+ K+ Y2 Y+ R" J+ J/ p) a+ Z
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
' Z7 C. P  ?. \# T/ RTVBNOW 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。
0 ?+ `2 h6 q1 N" U% A$ C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 W3 v; ~6 X) ]) a+ u3 r9 wTVBNOW 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
$ N; B4 x5 y1 T/ Y& O6 N公仔箱論壇立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。
# P6 l- u% g+ I; U9 [/ n3 P2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
8 X$ f% h* q1 Z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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