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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 2 `2 q# {6 ]- j& }9 Z

+ u( n/ k8 z  @7 o1 u' ?5 r1 ITVBNOW 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。If you are not a Physics person, read on and learn a fact of physics.   5.39.217.76  Z- _! w- p# I. p4 j3 ?1 H# k, \' S2 s
AMAZING!
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Even after you see it, it is still hard to believe!

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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇  J  A# J, U/ W" g: s4 O' S9 N( [# n
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
1 s: H. r) K$ N6 {5.39.217.76It is located in the city of Magdeburg, near Berlin.
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, a& ?8 J. Y( q* j) i9 @$ ~+ r. oTVBNOW 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 photo was taken on the day of inauguration.5.39.217.76' J) h1 ?4 c+ ]
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:

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3 j. c, s0 F8 l0 Y" otvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
( N: A- O  X9 [* P! p( t/ rTVBNOW 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。Or just the weight of the water? tvb now,tvbnow,bttvb% J8 h) @1 i: p; l
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。2 n' o! g4 \( j# D# W
Answer:

  m6 u, }! w3 R: R& d, D5.39.217.76
2 X0 R( @5 R- M" `6 ]! vTVBNOW 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。It only needs to be designed to withstand the weight of  the water! 1 \( U* m* l  @) `, M4 X: N
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
3 j/ _2 Q# s/ ^* m! O: o2 W2 E$ ZTVBNOW 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.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。$ `% n8 z( P" {; l! n4 G
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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, c1 h) P) a. J5 Q. @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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$ q2 r/ d  @$ l+ r* j2 }' e, 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。4 \4 K0 Q- g5 O- K
5.39.217.768 u8 x+ B" c5 y% o$ 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
' r/ M! _8 X" a, e5 q( S* `0 E0 ?tvb now,tvbnow,bttvb連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
3 x: ~5 U4 L' U( pTVBNOW 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。也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
& T7 J7 [( O, K  n1 iTVBNOW 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。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。公仔箱論壇( S' j6 s" T2 h" Y; K* d3 A: @# T- M
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。
( D5 o+ t3 |6 Y( W5.39.217.76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。6 k( W" x6 R5 `" D
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,bttvb6 y; X; x1 D* ]6 N$ `% ]  h
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tvb now,tvbnow,bttvb" ^7 d6 y. `5 [& D$ Z
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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  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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