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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.   公仔箱論壇0 s+ ^3 b" N- V
AMAZING!

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: j& K; t, R) [2 E. uEven after you see it, it is still hard to believe!
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2 U& X+ v% Q0 e$ f4 A7 y0 p$ v  @公仔箱論壇Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 6 X/ C( m; v3 `( F# J* p
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。; o( b& ?. z' u9 v3 u2 L
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
" c0 J4 R: D, R! ]( e- KTo 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,
: r( ]0 ?/ f( Z( Z# y2 x, b0 w" u- N* QOr just the weight of the water?
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Answer:

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It only needs to be designed to withstand the weight of  the water!
- h) V# P1 K9 V8 i5.39.217.77:8898Why? 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
, B3 `+ x+ r4 ~8 d8 ~0 ~/ kTVBNOW 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。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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. S) d5 x0 f) e" _! d9 YConstruction 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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6 v& l* c2 I$ Z! W6 u8 f0 k$ nTVBNOW 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。
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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。& R# j+ }3 E' K) p; w4 V

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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7 }; E. E- i  d- J) o" g0 P6 n* g
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 Q6 d- ~" x: f" D公仔箱論壇也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。5.39.217.77:88981 }2 _% y$ p; a8 q* m  X8 w
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。
! w& M+ [, H. K" b. C, A' qTVBNOW 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。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。) O' @- k' F1 F8 z  t
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
$ G! ^" J3 T$ I# F7 S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。
! f" ^! F! [! l5 x6 R# [" S2 `5.39.217.77:88982003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和公仔箱論壇/ c) K" z9 {( k4 u
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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