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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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  `; H- r1 Q; n+ W# D7 xIf you are not a Physics person, read on and learn a fact of physics.   tvb now,tvbnow,bttvb# l" E% V+ Y% Z* S
AMAZING!

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& ]/ C! e5 U# pEven 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!
- F2 j2 s3 N0 V) Y% a. iTVBNOW 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
' v. e) w0 h+ }3 H5.39.217.76It is located in the city of Magdeburg, near Berlin.

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5 |- V) d6 s6 m# g( H公仔箱論壇The photo was taken on the day of inauguration.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。" C' e3 k/ f3 u
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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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,tvb now,tvbnow,bttvb- V1 ]- F) |& v! e1 k
Or just the weight of the water? 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。9 t) Q1 U( z! b  @

5 F7 h. x5 {) ~( |+ X3 [0 kAnswer:
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It only needs to be designed to withstand the weight of  the water! * V! q: H8 L+ R8 ]+ j/ p! l( e
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 Germany
% c3 v6 f1 ~, S0 q7 u9 T4 gThe 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.tvb now,tvbnow,bttvb' m% o, }$ _+ `, \- g
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.   X* x5 z3 w/ j% W# |

; f- j0 @3 d" W1 \! T' [0 c6 ^5.39.217.76Construction 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
8 X* o5 ]0 A9 g% [# k7 ~, E連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇
: J: ~5 L3 z* l- N公仔箱論壇也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。
7 `, g, e0 ?8 \& P5 t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。公仔箱論壇% b' `: S4 q  {* w& P
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。tvb now,tvbnow,bttvb) Z/ Q9 c# {7 b  r
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 萬5.39.217.76: S' v( w/ B2 H  a. u
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。
! T4 b" k( T' O9 A+ eTVBNOW 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5.39.217.762 c3 ^# V. `& {0 H2 ^
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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  • k23bb

多谢您的分享!
first time heard & saw it, thanks for sharing, thanks tvboxnow!!
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