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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 公仔箱論壇% n6 {) `" Z; h
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If you are not a Physics person, read on and learn a fact of physics.   tvb now,tvbnow,bttvb  U+ u( |# x' o, K+ Z
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!
+ t: }, k/ a( r) Z& Mtvb 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. % z7 G) ^( l! {1 d
It is located in the city of Magdeburg, near Berlin.
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! l# k' G7 s5 |* }; u' ]公仔箱論壇The photo was taken on the day of inauguration.
, M) }3 H8 g) A0 c7 ~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。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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2 {6 a. W/ q2 _' Z6 S% n5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。8 a9 l( `4 r* Q
Or just the weight of the water?
! k3 a9 W% [9 q: }0 _9 U2 w4 O4 }$ uTVBNOW 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。5.39.217.763 p1 w. y  K6 W5 ~. h% [% C' v
Answer:

$ \9 r) O# {* f1 u1 ]5.39.217.76
) T5 p9 V$ M% _: ]8 L: STVBNOW 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! 5.39.217.76+ b2 O, {* N6 Z* t9 T# {
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公仔箱論壇4 |# p# h" f7 B# V* K) ?2 x2 M
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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' t$ d% \' i3 M+ u9 p公仔箱論壇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4 ^) k" W9 g* ]* ^+ p+ Q& u
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇, u+ h) F" S/ |
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
* j$ s: E6 l; J7 L+ k& ktvb now,tvbnow,bttvb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。tvb now,tvbnow,bttvb/ B1 G6 k" `1 R3 P# Q& {! C: I
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 z9 T: z& B7 J9 u/ }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。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
: }: R/ ^5 ]3 k+ E. f& h/ gTVBNOW 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。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。
+ \% h( A7 }; b. R6 Ttvb now,tvbnow,bttvb2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
1 r( ~. K0 Y/ Q. |# p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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