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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
! f5 j* \1 A; O+ l3 l1 U1 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。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。+ Y3 Z1 [  o5 d( b
If you are not a Physics person, read on and learn a fact of physics.   
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9 x+ d0 K' o, \. K0 f  H; b& T公仔箱論壇Even after you see it, it is still hard to believe!
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[attach]1486499[/attach]
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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
/ ?% B7 I2 x8 r1 \; g* f' ]: K/ s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. / e" }( t/ X% V  x
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.  Z- e/ A( v. a* A1 R$ Z# M
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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/ h$ `$ V2 A6 w; H9 NQuestion:

: R# o5 \6 ^4 ]& G: A公仔箱論壇
4 W, o4 F7 i: _7 o+ E9 LTVBNOW 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic," s* Q# Z/ q& e' V' L6 T
Or just the weight of the water?
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7 H. Q6 s1 ?" U* Y" v& [5.39.217.77:8898Answer:

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It only needs to be designed to withstand the weight of  the water!
( ~. n, t8 R, {) R, k5 l3 a, ]: R9 l6 Ctvb now,tvbnow,bttvbWhy? 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 Germany5.39.217.77:88987 s5 U, T) u0 d- p
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.2 r  x' s" t4 P$ |
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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) s1 `9 J9 y$ _; n$ ptvb now,tvbnow,bttvb[attach]1486500[/attach]tvb now,tvbnow,bttvb% A4 K7 O! V2 }) k) o& n# U
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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。1 T$ w: K6 l; p  _

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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
6 `7 ?8 [: `4 H# Z. |連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
* D. l% I. f+ @& G也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。公仔箱論壇8 o; H# ]1 F' v# V
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。! G. z# F8 x( v7 m9 ?' Y5 |
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。tvb now,tvbnow,bttvb0 y- t  \: c( n) q9 P) 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。# c, X" M. P: u% b9 {
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。 . x0 x: v7 C/ x7 T( \* [  f5 E% P
2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和公仔箱論壇+ L7 y  ~0 E$ i, b- [
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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