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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
  X& l2 b3 @# h公仔箱論壇
" a) @2 P0 E4 k6 sIf you are not a Physics person, read on and learn a fact of physics.   5.39.217.77:8898% [: I# ?& X1 W( f9 m) [
AMAZING!
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" \8 o9 M8 o+ g4 B! IEven after you see it, it is still hard to believe!

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! ~' ~+ d: d; e6 O5.39.217.77:8898Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
5 Z- S# e/ D! _' e. e- 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
# k* o/ j, ?' A& i/ h; a8 o3 a  G公仔箱論壇It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
) l0 a( N! w: _$ N( b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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+ ^1 @. m5 {+ s) l: D, Otvb now,tvbnow,bttvbQuestion:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇7 B' Q4 t5 ?' y0 n& K, u- c
Or 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!
4 J+ `8 Z# W$ X( M4 \. Y; xWhy? 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; i5 a' V; {; ^- L9 e- \
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. 5.39.217.77:8898" x. B/ U- B8 d4 G
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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]1486501[/attach]
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" |3 G6 q+ W5 Y$ `1 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。[attach]1486503[/attach]/ v- I# i: x- d) ^1 L. w; y! J0 M
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[attach]1486505[/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。9 j1 V3 `9 K8 g$ O" C. t* H+ V
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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
+ n' c  c1 G4 t8 @8 }- m公仔箱論壇連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
4 l) O8 S% T) {( H也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。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。* j" j" H) `6 S" 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。% t: W3 ?7 t* l
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/ s) s" j% z) n# o5.39.217.77:8898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
% p2 }5 {4 J7 _2 Q, [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。 : Z) [' c: U! {6 [
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* [; m6 I4 O, j7 Z* h3 a' v
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。
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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