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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 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。4 z4 I: A' m; z* f" j. ]% n0 U

  `+ T- w- A, F- \# y9 @5.39.217.76If you are not a Physics person, read on and learn a fact of physics.   公仔箱論壇9 c  f3 A4 J$ I3 c& p$ S
AMAZING!

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Even after you see it, it is still hard to believe!

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+ E$ o- n% a3 p; M* 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。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 E8 U- d( \9 R7 T) [3 m+ b
Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 3 r. x5 p' X2 v
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( u# L. s& {' e) a& c. ]' ~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。It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.
4 ?2 _1 s: N- l$ atvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76: v6 k$ v  r9 `  e! B

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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
4 ?+ i4 ^3 k/ {5.39.217.76Or just the weight of the water? : g$ ]3 R* s7 y6 Y: N4 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。4 q' {. T* l  J$ ^$ Q! j; G$ b
Answer:

& e2 O% R! R, f, K- v. c  ?% QTVBNOW 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。
2 L" Q  V" F' I/ `: z3 D5.39.217.76It only needs to be designed to withstand the weight of  the water! 5 o+ ^5 U9 H9 X/ h0 z: @& m& S/ q
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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The Incredible Magdeburg Water Bridge in Germany4 T6 l/ J) m$ [7 Y  {
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. 4 d" `: G; J* b3 X3 R% a
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。" |% ^. \+ r# l- l( e. I
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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- t9 n6 n. W- K3 m9 sTVBNOW 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。0 B: \5 L" ]" h0 x7 q7 r8 b

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& ~. @8 i2 w# u" x/ p公仔箱論壇
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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5.39.217.761 O1 {( r, d8 ?! {0 [) ^; ]
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇& c/ }/ ^9 u4 @( u
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
7 m) E/ G( _0 L- x! A% atvb now,tvbnow,bttvb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。) D2 l* F+ G! Z
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。" ~4 s! _6 o$ `% D! I, J
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- n/ p' ]* t. l
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。 # o% ^# @% U# @
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! ?: y/ R$ E' A1 I! T4 t) `, P" D
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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