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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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If you are not a Physics person, read on and learn a fact of physics.   
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Even after you see it, it is still hard to believe!
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7 L3 P% G! [& U/ Y0 s9 {3 e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!
! E1 N$ B2 i/ ?  r( p: @) Htvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. * U$ W' a( P5 x3 m
It is located in the city of Magdeburg, near Berlin.
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! E# {9 G. n$ B' Eos.tvboxnow.comThe photo was taken on the day of inauguration." v6 `1 L$ V% F0 v
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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4 o& T4 W' L3 D$ [+ c! I$ W; \tvb now,tvbnow,bttvbQuestion:

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# b5 @, f7 [% H. P! h+ 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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇1 n0 K9 b$ U/ k7 X. j% z. y, I
Or just the weight of the water?
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Answer:
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$ I- G+ ~8 T5 ~  E1 b9 u* b" J公仔箱論壇It only needs to be designed to withstand the weight of  the water!
; A. \' S2 S, {5 F9 pos.tvboxnow.comWhy? 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
! g! @9 c3 |7 M$ 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。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.os.tvboxnow.com: a# f8 n7 C. }( j5 Y, z4 T/ ?4 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。% \' ~: l7 w: ]; T, W. L

* O( I( }+ a( G' M& w5 A公仔箱論壇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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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。5 i# J' l; E* }  C
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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1 e' }/ {0 W" G# L" t& T6 a; c
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
( F4 f# \  i2 R也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。tvb now,tvbnow,bttvb( v& r8 j# ?' m6 x* o- 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。6 i' c) q& l/ q& ], f! U
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。
' y6 l) B1 X: `  R( P- y4 w$ [tvb now,tvbnow,bttvb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
8 J  a; \/ g4 f% y' n( pTVBNOW 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。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。
2 e8 ^' }2 H' P+ f9 J! ~, N公仔箱論壇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os.tvboxnow.com1 t7 F" M. m% |0 B- @) W# 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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