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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
  ^/ w% E  l6 _+ C* V1 Vtvb now,tvbnow,bttvb
& p% O, F% Y$ E* N- |' 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。If you are not a Physics person, read on and learn a fact of physics.   8 B* @5 I8 b1 A6 Y8 x
AMAZING!
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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! : @# E) N: f, m  w, d/ ]
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb- J1 M" m! R# n" _9 `# A
It is located in the city of Magdeburg, near Berlin.
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2 O4 {) n3 Y, S5 mTVBNOW 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 photo was taken on the day of inauguration.tvb now,tvbnow,bttvb0 x* ?7 {# A2 N
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,
0 t1 j# {6 V. Y2 J5.39.217.77:8898Or just the weight of the water? 3 J, U' _- X- I9 S2 a4 v

1 M& |. p# W% e- btvb now,tvbnow,bttvbAnswer:

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8 X0 T. Z2 [% r% ^; dtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of  the water! tvb now,tvbnow,bttvb, q2 _9 M0 F- r4 R
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
9 R& U5 f" o7 K. _- C( ~3 wThe 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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5 f& }/ }2 z0 u2 [7 Qtvb now,tvbnow,bttvbtvb now,tvbnow,bttvb( E" Z& `1 j1 r9 l3 {' ~
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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 j2 j; r# K" B0 O8 u" l  t
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇/ N2 m' _1 `( \/ s7 @1 x5 Y
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。# S4 t$ o% |$ t6 W; f, b
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。tvb now,tvbnow,bttvb# Q2 t. m9 N! u% w
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。5.39.217.77:88986 @- i2 |. |" n2 `  H' X7 A0 c7 W
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
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* M( ~: l. _3 Z. f2003 年正式通航,水橋全長 918 公尺。 而 2003 年之前,在米德蘭運河和! i7 @0 s& I& F% m
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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