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標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁]

作者: lilitan008    時間: 2011-10-2 10:09 PM     標題: 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,bttvb6 Q! g+ Z( }9 J! @" D1 _( G
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If you are not a Physics person, read on and learn a fact of physics.   5.39.217.77:8898; V" ~; U2 h7 p9 I2 Q: k5 f2 J
AMAZING!
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# o$ H$ S6 `1 u( _4 C5.39.217.77:8898Even after you see it, it is still hard to believe!

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- k+ [. D1 n& c- @Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
- \7 E3 X# n+ s8 B9 L; ~5.39.217.77:8898This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb0 b& J, v/ m+ b2 @3 T% }. g
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
* i% _/ o8 H; {: N$ K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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8 b0 U; q! ^3 `$ f6 t1 R- R5 WQuestion:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,tvb now,tvbnow,bttvb0 Z, f# A% j# x7 ]# v9 {6 d
Or just the weight of the water?
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7 S  Q9 }+ I: T, h9 XAnswer:

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1 |- a- e& p; _* \4 y5.39.217.77:8898It only needs to be designed to withstand the weight of  the water! 5.39.217.77:88985 s+ V# u& {) S( B
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# M2 q  J8 a& p9 m  \( |4 K9 S8 C
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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[attach]1486500[/attach]5.39.217.77:8898) {" @; K& @3 H+ d. Y) j* n) |
[attach]1486501[/attach]
; o/ `8 {  B( Z+ [* JTVBNOW 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。[attach]1486502[/attach]4 P  k" z2 V/ J
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[attach]1486504[/attach]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。; `4 p& v$ S2 r! g( k; @
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作者: busyfun    時間: 2011-10-4 11:33 AM

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
8 M) ^$ R& ^8 n2 I5.39.217.77:8898連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇# v8 n; s3 _/ U$ `6 Q1 d
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。tvb now,tvbnow,bttvb$ W# Z8 X: |( r* v0 \
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。% F2 E7 q$ h) E8 z* p
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。
' i& M% f% S2 J( h; u5 n5 g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
' `( p9 t  H: H: ?- t/ I  g% ^; X' C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。
2 f. k" `* N) W% x$ T  _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
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作者: swyip21    時間: 2011-10-7 10:19 AM

多谢您的分享!
作者: Mimisan    時間: 2011-10-12 11:01 AM

first time heard & saw it, thanks for sharing, thanks tvboxnow!!
作者: pepperjellabies    時間: 2011-10-15 09:35 PM

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