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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
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4 Q- d2 d! d8 N3 S/ w5.39.217.76If you are not a Physics person, read on and learn a fact of physics.   
* e( u) ~7 |- G1 x# y5 u. q5.39.217.76AMAZING!
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) G# t6 Y- z' }7 y- H8 |. ctvb now,tvbnow,bttvbEven 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。: s# G4 n  ~/ y
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
6 q+ p5 K0 b1 @" CIt is located in the city of Magdeburg, near Berlin.
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3 \9 u; o, y+ @' r5 vThe photo was taken on the day of inauguration.tvb now,tvbnow,bttvb$ w$ O- s6 k  E9 t
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.: O4 S) @& T! x6 z
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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,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。7 h& d8 Z  B+ i9 D
Or just the weight of the water?
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Answer:

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It only needs to be designed to withstand the weight of  the water! 公仔箱論壇4 C( m1 _) Y( ]9 r" P4 ?
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

0 s' `5 w. Z! N/ h9 b  e0 K5.39.217.76TVBNOW 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。, j# S2 u" \1 p* y8 g$ l% k& {* W+ X
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The Incredible Magdeburg Water Bridge in Germany公仔箱論壇/ j. p3 J+ X! c% e7 G) {  t1 O
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。! m5 F0 T: A; }0 v; g) F
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. tvb now,tvbnow,bttvb* {2 x- x# @' }4 X* `) t. |
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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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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
/ z4 y# c) q; X: |% c7 ltvb 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
$ s2 K# |) G8 b5.39.217.76也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
  F0 m6 @' q! o6 g# m0 @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。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。% U& L( ?! U+ D* C1 Y4 v
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。
- \8 H1 a' @4 y( Z3 Z5.39.217.76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 萬公仔箱論壇. ?: t# O# i2 A# r4 t' X
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。
* s- _" `: ?5 R0 DTVBNOW 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。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
( g2 A1 i& `3 k: P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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多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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