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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 5.39.217.77:8898* m# `4 D+ N  z0 j$ n
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If you are not a Physics person, read on and learn a fact of physics.   公仔箱論壇+ W0 X& d# F6 V0 d2 H0 [; M
AMAZING!

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Even after you see it, it is still hard to believe!
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2 r- H( C4 d9 i4 `' O; }; R& cMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
3 z# Q" Y+ g& |This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
- k2 Z$ O  D: [1 A5 B+ W6 Qtvb now,tvbnow,bttvbIt is located in the city of Magdeburg, near Berlin.
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5 c" `) E  K' w  u0 t# UThe photo was taken on the day of inauguration.
3 `1 ]* w* @& V' {( R. ~' _tvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
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5.39.217.77:88986 G- E1 f6 F0 S+ r2 _
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb. A4 X- P% c  X- @0 `
Or just the weight of the water?
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8 p- I& ^3 j- u& d0 b5 F; o' ?: gAnswer:
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+ K2 o. O! ?& f; nIt only needs to be designed to withstand the weight of  the water! 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。+ A8 w' n& P' d6 q) V2 C8 [
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 Germany1 b& p2 J0 v' H/ a/ {
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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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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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。$ ~& i0 B0 j- C: O

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5.39.217.77:8898: h& ]& `% |9 K' g9 q) t" q
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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公仔箱論壇, m3 ^8 Z5 n2 D2 p8 X
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
5 l- A# d0 y# `1 ?也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
: X) P6 h9 W% {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。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。; k2 _- R8 X- h
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。
' |+ b  W, C; ctvb now,tvbnow,bttvb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
  o& P# Z5 r: l; A  t2 t6 f" N* [5.39.217.77:8898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。
0 c* E! f: U- _( y2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和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 B- n0 c1 D# C) Q. G
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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