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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
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If you are not a Physics person, read on and learn a fact of physics.   5.39.217.77:88980 E- D2 E( |$ v. ?4 e9 f
AMAZING!
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Even after you see it, it is still hard to believe!

( Z- j4 B- v( xTVBNOW 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]1486499[/attach]公仔箱論壇4 p$ ^" G3 J4 t9 E4 C; d2 @

7 P& s% j& j& e- v! `+ l- ytvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
1 |/ _  L, c9 V4 O/ J8 ~6 V公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5 p- N( q" k- I+ a! h
It is located in the city of Magdeburg, near Berlin.
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。* V) x" E+ a% Q3 X0 S
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The photo was taken on the day of inauguration.
- @/ Z0 I0 q- S+ I6 n4 vTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.6 a: z- t: a* m& g; r/ g
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Question:
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7 N: o. v9 K; f) ltvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
+ U4 o4 [; w7 WOr just the weight of the water? 公仔箱論壇5 M& d* z$ U2 E6 F; x7 ~6 ~* _

& Y6 ]" r' C1 jtvb now,tvbnow,bttvbAnswer:
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6 }  {  J' L7 m5.39.217.77:8898It only needs to be designed to withstand the weight of  the water!
& n# F: l! X) Q( O! qWhy? 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 GermanyTVBNOW 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 `) ~$ U& C0 O6 Y! h
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.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。# s0 F+ N  N0 }- O4 W/ r' Z
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+ ?. c* u  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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1 }1 M& z( }0 k; x[attach]1486500[/attach]
% U- u. i7 ?% p" Y0 u- v4 gtvb now,tvbnow,bttvb[attach]1486501[/attach]
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[attach]1486503[/attach]
* ]& F7 r2 K5 w1 c[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。9 l* v9 u! B' H: e
[attach]1486505[/attach]5.39.217.77:8898  ?- }4 P1 u$ _9 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。3 a  N9 e7 R5 H3 r/ C$ x6 F

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
4 u) j8 J( s5 b& _! ]5.39.217.77:8898連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇/ o! `" `. j, J
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
9 L. k# o- w2 ^; X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。
+ Q/ R/ v! w+ C  M' Y5.39.217.77:8898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。公仔箱論壇7 m  [: e' y. z& Q7 q# p! z- A& u
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 萬9 G4 Q  f! {" o9 S7 P3 {8 Q% H: W
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。 tvb now,tvbnow,bttvb  F1 g1 O( c& N8 Z8 y$ ?
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
3 U1 d3 b" x+ r9 D( \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。
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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