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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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( S# K  l. F( n( X) [& P1 I公仔箱論壇If you are not a Physics person, read on and learn a fact of physics.   
# n. R0 g% f; a2 R& OAMAZING!
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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! 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。: t+ D8 V: ^$ E" B: b
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 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。; I' F: k1 {. W! |  b7 E
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
' d; I  b1 s- H# ]公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb8 r0 J! p* X# g( ~& r$ l
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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,
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) N" h: ?5 Y+ c( z. ?3 ]+ I公仔箱論壇Answer:

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( s8 S- ]% k8 X- \- o0 v5 M9 QIt only needs to be designed to withstand the weight of  the water!
# |$ s. ^" l; ?, U! s5.39.217.76Why? 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" }& S6 t, v1 e  G# K) |  X1 @
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. 5.39.217.768 A0 `" w5 s- ^! N% s7 d/ D( @
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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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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5.39.217.76; o. Y0 f' u7 j6 q7 W6 t0 Y) A
連通兩條水道的最初構思,而羅騰湖 Rothensee 升船機及大橋錨碇- }+ z* X  H) V& L! W% i. k
也於 1938 年安裝就位,但在二次大戰期間,建設工程被推遲。公仔箱論壇; Q, z5 p4 F8 H5 i6 ^7 g( \( {
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。, {5 e$ U& i0 ?3 v" 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。公仔箱論壇: L6 I8 X: U) ]
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/ _7 }, |+ L$ q7 A% {9 _; d
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。 + _0 J$ j, D5 |6 S0 I
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。1 O( F! X0 M: r4 z, ?4 V
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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