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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 : H6 e  R/ A8 K3 q0 h/ J% v

/ \) Z7 P& ~8 K# Z7 V5.39.217.76If you are not a Physics person, read on and learn a fact of physics.   公仔箱論壇% [0 t2 g1 L1 v3 d8 d/ p: B
AMAZING!

- d+ C4 r5 S: u: B* s7 N8 Z' C5.39.217.76TVBNOW 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。: q7 Q% {& C; `$ E( U4 [
Even after you see it, it is still hard to believe!
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5 T0 Y6 O& Y; O6 XTVBNOW 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。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# U; i! L% g* E0 x( V
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. {9 t/ C: F* |1 ~( r7 J6 ?2 `
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.tvb now,tvbnow,bttvb7 O/ }6 V; P( n5 {) K
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇" ^+ M* a' s+ m* }1 w9 A- L/ Z
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Question:
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7 B! \8 I# H8 b/ B) L公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
; y8 E8 H  Q1 a7 |Or just the weight of the water?
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& Y3 E4 d& |; B% Q公仔箱論壇Answer:

: `* Q# E5 i. P5 J% Utvb now,tvbnow,bttvb公仔箱論壇3 ^2 Y# J3 d, K$ A! m& K/ N% ~
It only needs to be designed to withstand the weight of  the water!
/ {* q1 q/ i1 k  p5.39.217.76Why? 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 Germany5.39.217.76" }  a6 s3 r$ x) W8 E
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.5.39.217.76* Q6 G$ v- n+ S5 c2 {
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. % u" e% `/ ~1 Y; w
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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.
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" S, l2 j' x5 M, l& }
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% _, N3 G+ i6 `3 _+ XTVBNOW 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。
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5.39.217.76, e$ m# M* Z1 P1 }
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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9 a1 g% _0 q5 j- ^$ x4 Q
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
( N, q( A/ T, c5.39.217.76也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
, U$ k6 Z/ Z2 G. C) \! l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。
6 V* C  N9 S3 C1 x8 }0 G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。# T  `8 H$ L( G# |
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
) o) c" y, O& w/ e2 v; n' H: O公仔箱論壇立方公尺混凝土,完成了巨大的水橋,連接柏林的內陸港與萊茵河沿岸港口。
; C/ U* l/ |- e) Ctvb now,tvbnow,bttvb2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和5.39.217.76! r" M% [0 w  I. d7 \: P2 r; j% D* y$ ]
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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