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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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- f! c! p4 C. S7 W- X7 k5 b5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.   
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3 t; \# E2 Y: m4 O% \+ j公仔箱論壇7 O' Y8 f1 X& c4 V; g
Even after you see it, it is still hard to believe!

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0 x  x9 m8 L' [$ {/ ]: S+ U公仔箱論壇Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 4 H; H6 K3 S( C  o6 Z; B. i
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇) @: ~) H. v0 b1 I" \" m
It is located in the city of Magdeburg, near Berlin.
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# X$ q. ^8 B" Z7 z: B公仔箱論壇The photo was taken on the day of inauguration.
% m0 U  ~/ n5 o' t! ^$ w1 h" C公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
3 S5 N$ Z6 a' |6 b  ]2 t% f8 d* ~  WTVBNOW 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。
* p% |( f* K. T: i) R) |  U! _Question:
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。- t) K7 m: Z, P  S! _

' G4 Y0 w& w( z6 R公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
- o# K9 u4 Z% I8 ZOr just the weight of the water? 公仔箱論壇) Z2 I# I5 ]# P3 B" K

4 F" A9 t% c' L5 p3 s8 `Answer:

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It only needs to be designed to withstand the weight of  the water! : S% A  d1 ~! U  S4 {/ Z. Z
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
& M; y& n( y0 M& L4 n  ZThe 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。& a) b0 D* b- b2 N3 F" D
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. . p% e' K' |) }
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。/ ]) L4 y. K; |) [8 A
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]1486500[/attach]公仔箱論壇4 _- m2 y) B0 h
[attach]1486501[/attach]
% O  |8 j* j; \! B* u# ^9 O4 F3 L1 T3 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。[attach]1486502[/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。# M: M  q( g: Z& p+ L6 u  A
[attach]1486503[/attach]
& o0 ?' j' F/ L: q4 ?公仔箱論壇[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。0 n  M$ c2 W, N; D" Q; J/ y
[attach]1486505[/attach]5.39.217.77:8898' A' ^! o- k; @; y: B8 N+ E( 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5.39.217.77:8898, O4 R, O. X) d3 p8 s
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
. r7 K% U0 K2 K/ x' _# kTVBNOW 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。) f8 S5 Y- l+ o% m3 K' s
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 G! R/ f" w" W. W9 O公仔箱論壇德國重新統一後,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。
' K7 R; v/ _3 U5.39.217.77:8898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
& Y3 h8 O; {# h5.39.217.77:8898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。 * R6 @+ F) Y7 }; P6 _( M+ Q! L
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
& d1 K: B5 v( U5 z9 Ztvb 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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