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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 6 x: G) P( \0 R/ Z

3 |8 h* c4 R$ r5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics.   
2 U  ?5 H3 O& D  {6 F+ I0 C7 K8 s$ L# \AMAZING!

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9 |3 T: Q) E" ~; f公仔箱論壇Even after you see it, it is still hard to believe!
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[attach]1486499[/attach]5.39.217.77:8898( _7 h) E2 w& E6 E

$ T) R/ v* L: W8 O* ]/ ]Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb( ^3 b. b* P4 X* L
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
; |/ G) h* H, b* A# m+ k+ T9 W: bIt 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。+ u  j" z+ v1 a# D8 i

6 c' w+ F9 s: I+ p- ?$ kThe photo was taken on the day of inauguration.
# z. l+ R/ B; w' I, p- Q# w5.39.217.77:8898To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.! l  ]+ k+ ^: d8 |: E+ t/ A3 V: ?3 n
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Question:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,! Z3 k0 J3 ^6 A3 ^4 V+ \
Or just the weight of the water? 5.39.217.77:88988 e" I+ K' H+ f0 e

2 x' W$ S% `/ Y9 `9 `) n5.39.217.77:8898Answer:
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; @% }- _# @: D/ e. Utvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of  the water! 公仔箱論壇) g$ |" y& M: Q. |: u) J# f  [
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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公仔箱論壇  e! S* Y, S# o4 |( m% X6 {
The Incredible Magdeburg Water Bridge in Germany
8 u9 M3 F: F/ m8 r( J7 @" }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.( h6 b+ B4 Z: Y' T' K
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.
3 a- z4 e# m: M3 }0 T8 y- O+ 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。+ W& _. Q  s, b$ m4 v0 ]
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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. ^9 ~3 K- k9 D公仔箱論壇5.39.217.77:8898- l0 A! `% y6 n/ r9 m; i8 u9 M1 q
[attach]1486500[/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 X/ R1 |0 _4 K1 s
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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
; r$ l3 r; |/ G  r' O8 P/ 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。連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇公仔箱論壇/ V1 z8 @/ [' E9 D- Y6 k8 H$ D/ {
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
# T& V7 e: o/ p) f7 q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。
: v/ {9 A# H( E/ P, {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。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。
* G8 c0 x3 k$ V/ y# l( h7 h- c: \5.39.217.77:8898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
- T/ h3 [! m' p8 m5.39.217.77:8898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。
( x/ |" S3 ^( z+ n* R2003 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7 z/ L6 x  ]- {& x$ L( F
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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