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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 : |% {( Y' Z. r& Y
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If you are not a Physics person, read on and learn a fact of physics.   
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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! tvb now,tvbnow,bttvb: ]7 O0 D5 Y  ^5 b) K
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.76, b/ l# w8 x; p! A
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb* r0 s9 s% f  g0 E( P
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 K. _3 p  g  ]' C, s$ \

6 e7 c  I* K/ R* zQuestion:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! \  I, R: d1 n0 ctvb now,tvbnow,bttvbOr just the weight of the water? + s9 G" V3 O! W2 D1 \& m! U% z
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Answer:

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It only needs to be designed to withstand the weight of  the water!
& }- H& G# d! mWhy? 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
# y1 d3 q& M2 D# i/ E4 N- mtvb 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.. C8 n! K  x8 `; T7 o: o/ q
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. / C) e0 v1 r$ Z! ^# W

# ^! s! {1 ]% g- i8 \9 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。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+ U. J, e. O5 P3 N; E$ Z3 S7 o& F! i
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
, k( v7 m( Y6 h( X2 ~8 V0 Ntvb 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。
9 Z1 m& [3 P+ o/ ]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。5.39.217.765 q/ p* j. J" @* b) N5 T9 n
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。5.39.217.762 U' h7 G" [6 S- q4 \3 W" q6 j8 z
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 萬2 g- [% J- G% a) b; I1 D# X; B9 G
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( v& d3 j& V* s
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tvb now,tvbnow,bttvb. R" `* u1 U% @+ X
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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