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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 公仔箱論壇& }1 j* R: }) _9 l8 J

' @6 u2 c8 g3 g' b2 E5 uIf you are not a Physics person, read on and learn a fact of physics.   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# |% p! U- _- m" @9 ?
AMAZING!
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$ k( P' c1 I' w公仔箱論壇Even 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!
$ d" [' A/ L4 E3 L6 z) \tvb 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.
1 {$ [( \( ], r! sIt is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.% K1 r/ a% b9 M- q: j$ u
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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) t& ?* Y. u6 i; K% p: @4 Itvb now,tvbnow,bttvbQuestion:

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,' x+ Z7 ]  S$ x9 s
Or just the weight of the water? " u& W7 O6 l- N

! T' ^, ^6 W- |& ^; @5 cAnswer:

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It only needs to be designed to withstand the weight of  the water!
1 @% j' \# U6 j' o0 P( Y# r* YWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
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。3 x$ q. w% H9 q% a8 U& F! S2 a7 b/ S
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The Incredible Magdeburg Water Bridge in Germany, Q: E3 [8 ~' k* s5 ~* V
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.
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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.
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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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1 X4 T# |7 z( g. U8 Z1 B1 ctvb now,tvbnow,bttvb[attach]1486500[/attach]
+ Z" |; `7 C5 s2 X4 h公仔箱論壇[attach]1486501[/attach]
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; A9 B- v2 C% ~& J公仔箱論壇[attach]1486503[/attach]
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! E; T1 l- V( ], C# V' LTVBNOW 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]1486505[/attach]5.39.217.77:8898! ~; l" @. d/ g+ y: R

; a! o& P3 ^# D$ t4 M6 [% U8 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。

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
; K4 T5 w* F8 s3 q/ ~公仔箱論壇連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇5.39.217.77:8898) c  g& x2 ^& J0 D4 P
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
- n7 x4 S! d9 _3 o+ p  i4 W% d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。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。' K9 S, Y+ ?1 Q  {
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。
/ h- G" l/ [: v& }: C( F3 c3 aTVBNOW 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。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。. w$ x6 {  J  m  M! Y
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。
$ V! J- z% H2 R- R7 x2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和
3 [* Y+ _0 H1 f! z! j& I1 R/ stvb 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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