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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 " U$ A5 J9 g+ X9 D8 M3 s( m+ A. Y8 [

+ p+ S- U8 C9 W2 g9 m* s5 O公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.   
9 t- I7 x* D& S) k( bTVBNOW 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。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! 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。! T9 _' ~& z3 s3 J
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
1 S0 b8 ]. [6 [  m3 \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。* n6 T; J2 L; u2 G
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The photo was taken on the day of inauguration.
# w5 b* R" A4 }5 w- B# N" d/ F9 ~5 lTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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- D! y6 P! c4 L. k公仔箱論壇Question:
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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。/ \/ @/ F. p& [8 N( ^; x
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.76) J" r) n7 o) x3 \" e  k& R
Or just the weight of the water? ( w) V+ w! [; R  W/ W

: j% ?+ \! j( {Answer:

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It only needs to be designed to withstand the weight of  the water! 8 v4 N* z0 s* 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+ S# p2 b+ c' c8 i0 |2 k
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.公仔箱論壇' K+ k. {3 Q3 Q/ Y
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. 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。' v0 _' K$ B; q. K1 A

! S- e9 C! H) LConstruction 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]1486502[/attach]tvb now,tvbnow,bttvb9 S: G" x% w& X( K0 x
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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。; l2 y/ }2 h* b' J1 Y- @$ 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
, C2 n) G# c, P% k8 A$ o5.39.217.76連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇' w; o$ f! Z( S  G$ n* t* X
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。6 a4 I% U! r4 X+ F! j/ N
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。5.39.217.768 E. n8 `. P2 o( c# X4 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。tvb now,tvbnow,bttvb5 V1 W1 W" y% c% R
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
, s3 o; }1 \4 L' Y7 Vtvb now,tvbnow,bttvb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。
; X# w6 |4 s9 E, ^1 T2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
" M! s. l5 e- t/ J9 O! n) D$ Ntvb now,tvbnow,bttvb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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